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base: aiden:4e2ac4a09147c5c8b762f4cb81c0b3ea02dd93fa
Branches Tags
aiden:main aiden:old-app aiden:Audio
aiden:v0.0.5 aiden:v0.0.4 aiden:v0.0.3 aiden:v0.0.2 aiden:v0.0.1
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compare: aiden:Audio
Branches Tags
aiden:main aiden:old-app aiden:Audio
aiden:v0.0.5 aiden:v0.0.4 aiden:v0.0.3 aiden:v0.0.2 aiden:v0.0.1

2 Commits
4e2ac4a091 ... Audio

Author SHA1 Message Date
Aiden
9a8748687a Audio experiments 2026-05-05 12:18:42 +10:00
Aiden
f836c53d10 Initial audio support 2026-05-04 14:32:29 +10:00
171 changed files with 5936 additions and 47992 deletions
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79
.gitea/workflows/ci.yml
View File

@@ -12,48 +12,15 @@ on:
jobs:
native-windows:
name: Native Windows Build And Tests
runs-on: windows-2022
runs-on: windows-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Verify Visual Studio ATL
shell: powershell
run: |
$atlHeaders = @(Get-ChildItem -Path "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC" -Filter atlbase.h -Recurse -ErrorAction SilentlyContinue)
if ($atlHeaders.Count -eq 0) {
Write-Error "Visual Studio Build Tools is missing ATL. Install the 'C++ ATL for latest v143 build tools (x86 & x64)' component, component ID Microsoft.VisualStudio.Component.VC.ATL, then restart the runner service."
exit 1
}
Write-Host "Found ATL header: $($atlHeaders[0].FullName)"
- name: Configure Debug
shell: powershell
run: |
$slangRoot = "${{ vars.SLANG_ROOT }}"
if ([string]::IsNullOrWhiteSpace($slangRoot)) {
$slangRoot = $env:SLANG_ROOT
}
if ([string]::IsNullOrWhiteSpace($slangRoot)) {
$slangRoot = Join-Path $PWD "3rdParty\slang-2026.8-windows-x86_64"
}
$requiredFiles = @(
(Join-Path $slangRoot "bin\slangc.exe"),
(Join-Path $slangRoot "bin\slang-compiler.dll"),
(Join-Path $slangRoot "bin\slang-glslang.dll"),
(Join-Path $slangRoot "LICENSE")
)
$missingFiles = @($requiredFiles | Where-Object { -not (Test-Path -LiteralPath $_) })
if ($missingFiles.Count -gt 0) {
Write-Error "Missing native third-party dependencies. Set Gitea repository variable SLANG_ROOT, or pre-populate the repo-local 3rdParty folder on the Windows runner. Missing: $($missingFiles -join ', ')"
exit 1
}
Write-Host "Using SLANG_ROOT=$slangRoot"
cmake --preset vs2022-x64-debug -DSLANG_ROOT="$slangRoot"
run: cmake --preset vs2022-x64-debug
- name: Build Debug
shell: powershell
@@ -65,7 +32,7 @@ jobs:
ui-ubuntu:
name: React UI Build
runs-on: ubuntu-latest
runs-on: nubuntu-latest
steps:
- name: Checkout
@@ -81,7 +48,7 @@ jobs:
package-windows:
name: Windows Release Package
runs-on: windows-2022
runs-on: windows-latest
needs:
- native-windows
- ui-ubuntu
@@ -90,16 +57,6 @@ jobs:
- name: Checkout
uses: actions/checkout@v4
- name: Verify Visual Studio ATL
shell: powershell
run: |
$atlHeaders = @(Get-ChildItem -Path "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC" -Filter atlbase.h -Recurse -ErrorAction SilentlyContinue)
if ($atlHeaders.Count -eq 0) {
Write-Error "Visual Studio Build Tools is missing ATL. Install the 'C++ ATL for latest v143 build tools (x86 & x64)' component, component ID Microsoft.VisualStudio.Component.VC.ATL, then restart the runner service."
exit 1
}
Write-Host "Found ATL header: $($atlHeaders[0].FullName)"
- name: Build UI
shell: powershell
working-directory: ui
@@ -109,30 +66,7 @@ jobs:
- name: Configure Release
shell: powershell
run: |
$slangRoot = "${{ vars.SLANG_ROOT }}"
if ([string]::IsNullOrWhiteSpace($slangRoot)) {
$slangRoot = $env:SLANG_ROOT
}
if ([string]::IsNullOrWhiteSpace($slangRoot)) {
$slangRoot = Join-Path $PWD "3rdParty\slang-2026.8-windows-x86_64"
}
$requiredFiles = @(
(Join-Path $slangRoot "bin\slangc.exe"),
(Join-Path $slangRoot "bin\slang-compiler.dll"),
(Join-Path $slangRoot "bin\slang-glslang.dll"),
(Join-Path $slangRoot "LICENSE")
)
$missingFiles = @($requiredFiles | Where-Object { -not (Test-Path -LiteralPath $_) })
if ($missingFiles.Count -gt 0) {
Write-Error "Missing native third-party dependencies. Set Gitea repository variable SLANG_ROOT, or pre-populate the repo-local 3rdParty folder on the Windows runner. Missing: $($missingFiles -join ', ')"
exit 1
}
Write-Host "Using SLANG_ROOT=$slangRoot"
cmake --preset vs2022-x64-release -DSLANG_ROOT="$slangRoot"
run: cmake --preset vs2022-x64-release
- name: Build Release
shell: powershell
@@ -147,8 +81,7 @@ jobs:
run: Compress-Archive -Path dist/VideoShader/* -DestinationPath dist/VideoShader.zip -Force
- name: Upload Runtime Package
# Gitea/GHES-compatible runners do not support the v4 artifact backend yet.
uses: actions/upload-artifact@v3
uses: actions/upload-artifact@v4
with:
name: VideoShader-windows-release
path: dist/VideoShader.zip

251
CMakeLists.txt
View File

@@ -7,138 +7,70 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(APP_DIR "${CMAKE_CURRENT_SOURCE_DIR}/apps/LoopThroughWithOpenGLCompositing")
set(SLANG_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/slang-2026.8-windows-x86_64" CACHE PATH "Path to a Slang binary release containing bin/slangc.exe")
set(GPUDIRECT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/Blackmagic DeckLink SDK 16.0/Win/Samples/NVIDIA_GPUDirect" CACHE PATH "Path to the NVIDIA_GPUDirect sample directory from the Blackmagic DeckLink SDK")
if(NOT EXISTS "${APP_DIR}/LoopThroughWithOpenGLCompositing.cpp")
message(FATAL_ERROR "Imported app sources were not found under ${APP_DIR}")
endif()
set(SLANG_RUNTIME_FILES
"${SLANG_ROOT}/bin/slangc.exe"
"${SLANG_ROOT}/bin/slang-compiler.dll"
"${SLANG_ROOT}/bin/slang-glslang.dll"
)
foreach(SLANG_RUNTIME_FILE IN LISTS SLANG_RUNTIME_FILES)
if(NOT EXISTS "${SLANG_RUNTIME_FILE}")
message(FATAL_ERROR "Required Slang runtime file not found: ${SLANG_RUNTIME_FILE}")
endif()
endforeach()
set(SLANG_LICENSE_FILE "${SLANG_ROOT}/LICENSE")
if(NOT EXISTS "${SLANG_LICENSE_FILE}")
message(FATAL_ERROR "Slang license file not found: ${SLANG_LICENSE_FILE}")
if(NOT EXISTS "${GPUDIRECT_DIR}/lib/x64/dvp.lib")
message(FATAL_ERROR "NVIDIA GPUDirect library not found under ${GPUDIRECT_DIR}")
endif()
set(APP_SOURCES
"${APP_DIR}/videoio/decklink/DeckLinkAPI_i.c"
"${APP_DIR}/control/ControlServer.cpp"
"${APP_DIR}/control/ControlServer.h"
"${APP_DIR}/control/OscServer.cpp"
"${APP_DIR}/control/OscServer.h"
"${APP_DIR}/control/RuntimeControlBridge.cpp"
"${APP_DIR}/control/RuntimeControlBridge.h"
"${APP_DIR}/control/RuntimeServices.cpp"
"${APP_DIR}/control/RuntimeServices.h"
"${APP_DIR}/videoio/decklink/DeckLinkAPI_h.h"
"${APP_DIR}/videoio/decklink/DeckLinkDisplayMode.cpp"
"${APP_DIR}/videoio/decklink/DeckLinkDisplayMode.h"
"${APP_DIR}/videoio/decklink/DeckLinkFrameTransfer.cpp"
"${APP_DIR}/videoio/decklink/DeckLinkFrameTransfer.h"
"${APP_DIR}/videoio/decklink/DeckLinkSession.cpp"
"${APP_DIR}/videoio/decklink/DeckLinkSession.h"
"${APP_DIR}/videoio/decklink/DeckLinkVideoIOFormat.cpp"
"${APP_DIR}/videoio/decklink/DeckLinkVideoIOFormat.h"
"${APP_DIR}/gl/renderer/GLExtensions.cpp"
"${APP_DIR}/gl/renderer/GLExtensions.h"
"${APP_DIR}/gl/shader/GlobalParamsBuffer.cpp"
"${APP_DIR}/gl/shader/GlobalParamsBuffer.h"
"${APP_DIR}/gl/renderer/GlRenderConstants.h"
"${APP_DIR}/gl/renderer/GlScopedObjects.h"
"${APP_DIR}/gl/shader/GlShaderSources.cpp"
"${APP_DIR}/gl/shader/GlShaderSources.h"
"${APP_DIR}/gl/OpenGLComposite.cpp"
"${APP_DIR}/gl/OpenGLComposite.h"
"${APP_DIR}/gl/OpenGLCompositeRuntimeControls.cpp"
"${APP_DIR}/gl/pipeline/OpenGLRenderPass.cpp"
"${APP_DIR}/gl/pipeline/OpenGLRenderPass.h"
"${APP_DIR}/gl/pipeline/OpenGLRenderPipeline.cpp"
"${APP_DIR}/gl/pipeline/OpenGLRenderPipeline.h"
"${APP_DIR}/gl/renderer/OpenGLRenderer.cpp"
"${APP_DIR}/gl/renderer/OpenGLRenderer.h"
"${APP_DIR}/gl/pipeline/OpenGLVideoIOBridge.cpp"
"${APP_DIR}/gl/pipeline/OpenGLVideoIOBridge.h"
"${APP_DIR}/gl/shader/OpenGLShaderPrograms.cpp"
"${APP_DIR}/gl/shader/OpenGLShaderPrograms.h"
"${APP_DIR}/gl/pipeline/PngScreenshotWriter.cpp"
"${APP_DIR}/gl/pipeline/PngScreenshotWriter.h"
"${APP_DIR}/gl/shader/ShaderProgramCompiler.cpp"
"${APP_DIR}/gl/shader/ShaderProgramCompiler.h"
"${APP_DIR}/gl/shader/ShaderBuildQueue.cpp"
"${APP_DIR}/gl/shader/ShaderBuildQueue.h"
"${APP_DIR}/gl/shader/ShaderTextureBindings.cpp"
"${APP_DIR}/gl/shader/ShaderTextureBindings.h"
"${APP_DIR}/gl/shader/Std140Buffer.h"
"${APP_DIR}/gl/shader/TextRasterizer.cpp"
"${APP_DIR}/gl/shader/TextRasterizer.h"
"${APP_DIR}/gl/shader/TextureAssetLoader.cpp"
"${APP_DIR}/gl/shader/TextureAssetLoader.h"
"${APP_DIR}/gl/pipeline/TemporalHistoryBuffers.cpp"
"${APP_DIR}/gl/pipeline/TemporalHistoryBuffers.h"
"${APP_DIR}/AudioSupport.cpp"
"${APP_DIR}/AudioSupport.h"
"${APP_DIR}/ControlServer.cpp"
"${APP_DIR}/ControlServer.h"
"${APP_DIR}/DeckLinkAPI_i.c"
"${APP_DIR}/GLExtensions.cpp"
"${APP_DIR}/GLExtensions.h"
"${APP_DIR}/LoopThroughWithOpenGLCompositing.cpp"
"${APP_DIR}/LoopThroughWithOpenGLCompositing.h"
"${APP_DIR}/LoopThroughWithOpenGLCompositing.rc"
"${APP_DIR}/platform/NativeHandles.h"
"${APP_DIR}/platform/NativeSockets.h"
"${APP_DIR}/NativeHandles.h"
"${APP_DIR}/NativeSockets.h"
"${APP_DIR}/OpenGLComposite.cpp"
"${APP_DIR}/OpenGLComposite.h"
"${APP_DIR}/OscServer.cpp"
"${APP_DIR}/OscServer.h"
"${APP_DIR}/resource.h"
"${APP_DIR}/runtime/RuntimeHost.cpp"
"${APP_DIR}/runtime/RuntimeHost.h"
"${APP_DIR}/runtime/RuntimeClock.cpp"
"${APP_DIR}/runtime/RuntimeClock.h"
"${APP_DIR}/runtime/RuntimeJson.cpp"
"${APP_DIR}/runtime/RuntimeJson.h"
"${APP_DIR}/runtime/RuntimeParameterUtils.cpp"
"${APP_DIR}/runtime/RuntimeParameterUtils.h"
"${APP_DIR}/shader/ShaderCompiler.cpp"
"${APP_DIR}/shader/ShaderCompiler.h"
"${APP_DIR}/shader/ShaderPackageRegistry.cpp"
"${APP_DIR}/shader/ShaderPackageRegistry.h"
"${APP_DIR}/shader/ShaderTypes.h"
"${APP_DIR}/RuntimeHost.cpp"
"${APP_DIR}/RuntimeHost.h"
"${APP_DIR}/RuntimeJson.cpp"
"${APP_DIR}/RuntimeJson.h"
"${APP_DIR}/RuntimeParameterUtils.cpp"
"${APP_DIR}/RuntimeParameterUtils.h"
"${APP_DIR}/ShaderCompiler.cpp"
"${APP_DIR}/ShaderCompiler.h"
"${APP_DIR}/ShaderPackageRegistry.cpp"
"${APP_DIR}/ShaderPackageRegistry.h"
"${APP_DIR}/ShaderTypes.h"
"${APP_DIR}/stdafx.cpp"
"${APP_DIR}/stdafx.h"
"${APP_DIR}/targetver.h"
"${APP_DIR}/videoio/VideoIOFormat.cpp"
"${APP_DIR}/videoio/VideoIOFormat.h"
"${APP_DIR}/videoio/VideoIOTypes.h"
"${APP_DIR}/videoio/VideoPlayoutScheduler.cpp"
"${APP_DIR}/videoio/VideoPlayoutScheduler.h"
"${APP_DIR}/VideoFrameTransfer.cpp"
"${APP_DIR}/VideoFrameTransfer.h"
)
add_executable(LoopThroughWithOpenGLCompositing WIN32 ${APP_SOURCES})
target_include_directories(LoopThroughWithOpenGLCompositing PRIVATE
"${APP_DIR}"
"${APP_DIR}/control"
"${APP_DIR}/gl"
"${APP_DIR}/gl/pipeline"
"${APP_DIR}/gl/renderer"
"${APP_DIR}/gl/shader"
"${APP_DIR}/platform"
"${APP_DIR}/runtime"
"${APP_DIR}/shader"
"${APP_DIR}/videoio"
"${APP_DIR}/videoio/decklink"
"${GPUDIRECT_DIR}/include"
)
target_link_directories(LoopThroughWithOpenGLCompositing PRIVATE
"${GPUDIRECT_DIR}/lib/x64"
)
target_link_libraries(LoopThroughWithOpenGLCompositing PRIVATE
dvp.lib
opengl32
glu32
Ws2_32
Crypt32
Advapi32
Gdiplus
Ole32
Windowscodecs
)
target_compile_definitions(LoopThroughWithOpenGLCompositing PRIVATE
@@ -151,13 +83,12 @@ if(MSVC)
endif()
add_executable(RuntimeJsonTests
"${APP_DIR}/runtime/RuntimeJson.cpp"
"${APP_DIR}/RuntimeJson.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/RuntimeJsonTests.cpp"
)
target_include_directories(RuntimeJsonTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/runtime"
)
if(MSVC)
@@ -167,32 +98,14 @@ endif()
enable_testing()
add_test(NAME RuntimeJsonTests COMMAND RuntimeJsonTests)
add_executable(RuntimeClockTests
"${APP_DIR}/runtime/RuntimeClock.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/RuntimeClockTests.cpp"
)
target_include_directories(RuntimeClockTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/runtime"
)
if(MSVC)
target_compile_options(RuntimeClockTests PRIVATE /W3)
endif()
add_test(NAME RuntimeClockTests COMMAND RuntimeClockTests)
add_executable(RuntimeParameterUtilsTests
"${APP_DIR}/runtime/RuntimeJson.cpp"
"${APP_DIR}/runtime/RuntimeParameterUtils.cpp"
"${APP_DIR}/RuntimeJson.cpp"
"${APP_DIR}/RuntimeParameterUtils.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/RuntimeParameterUtilsTests.cpp"
)
target_include_directories(RuntimeParameterUtilsTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/runtime"
"${APP_DIR}/shader"
)
if(MSVC)
@@ -201,32 +114,14 @@ endif()
add_test(NAME RuntimeParameterUtilsTests COMMAND RuntimeParameterUtilsTests)
add_executable(Std140BufferTests
"${CMAKE_CURRENT_SOURCE_DIR}/tests/Std140BufferTests.cpp"
)
target_include_directories(Std140BufferTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/gl"
"${APP_DIR}/gl/shader"
)
if(MSVC)
target_compile_options(Std140BufferTests PRIVATE /W3)
endif()
add_test(NAME Std140BufferTests COMMAND Std140BufferTests)
add_executable(ShaderPackageRegistryTests
"${APP_DIR}/runtime/RuntimeJson.cpp"
"${APP_DIR}/shader/ShaderPackageRegistry.cpp"
"${APP_DIR}/RuntimeJson.cpp"
"${APP_DIR}/ShaderPackageRegistry.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/ShaderPackageRegistryTests.cpp"
)
target_include_directories(ShaderPackageRegistryTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/runtime"
"${APP_DIR}/shader"
)
if(MSVC)
@@ -236,14 +131,12 @@ endif()
add_test(NAME ShaderPackageRegistryTests COMMAND ShaderPackageRegistryTests)
add_executable(OscServerTests
"${APP_DIR}/control/OscServer.cpp"
"${APP_DIR}/OscServer.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/OscServerTests.cpp"
)
target_include_directories(OscServerTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/control"
"${APP_DIR}/platform"
)
target_link_libraries(OscServerTests PRIVATE
@@ -256,72 +149,32 @@ endif()
add_test(NAME OscServerTests COMMAND OscServerTests)
add_executable(VideoIOFormatTests
"${APP_DIR}/videoio/decklink/DeckLinkVideoIOFormat.cpp"
"${APP_DIR}/videoio/VideoIOFormat.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/VideoIOFormatTests.cpp"
add_executable(AudioSupportTests
"${APP_DIR}/AudioSupport.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/AudioSupportTests.cpp"
)
target_include_directories(VideoIOFormatTests PRIVATE
target_include_directories(AudioSupportTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/videoio"
"${APP_DIR}/videoio/decklink"
)
if(MSVC)
target_compile_options(VideoIOFormatTests PRIVATE /W3)
target_compile_options(AudioSupportTests PRIVATE /W3)
endif()
add_test(NAME VideoIOFormatTests COMMAND VideoIOFormatTests)
add_test(NAME AudioSupportTests COMMAND AudioSupportTests)
add_executable(VideoPlayoutSchedulerTests
"${APP_DIR}/videoio/VideoPlayoutScheduler.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/VideoPlayoutSchedulerTests.cpp"
add_custom_command(TARGET LoopThroughWithOpenGLCompositing POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different
"${GPUDIRECT_DIR}/bin/x64/dvp.dll"
"$<TARGET_FILE_DIR:LoopThroughWithOpenGLCompositing>/dvp.dll"
)
target_include_directories(VideoPlayoutSchedulerTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/videoio"
"${APP_DIR}/videoio/decklink"
)
if(MSVC)
target_compile_options(VideoPlayoutSchedulerTests PRIVATE /W3)
endif()
add_test(NAME VideoPlayoutSchedulerTests COMMAND VideoPlayoutSchedulerTests)
add_executable(VideoIODeviceFakeTests
"${APP_DIR}/videoio/VideoIOFormat.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/tests/VideoIODeviceFakeTests.cpp"
)
target_include_directories(VideoIODeviceFakeTests PRIVATE
"${APP_DIR}"
"${APP_DIR}/videoio"
"${APP_DIR}/videoio/decklink"
)
if(MSVC)
target_compile_options(VideoIODeviceFakeTests PRIVATE /W3)
endif()
add_test(NAME VideoIODeviceFakeTests COMMAND VideoIODeviceFakeTests)
install(TARGETS LoopThroughWithOpenGLCompositing
RUNTIME DESTINATION "."
)
install(FILES ${SLANG_RUNTIME_FILES}
DESTINATION "3rdParty/slang/bin"
)
install(FILES "${SLANG_LICENSE_FILE}"
DESTINATION "third_party_notices"
RENAME "SLANG_LICENSE.txt"
)
install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/SHADER_CONTRACT.md"
install(FILES "${GPUDIRECT_DIR}/bin/x64/dvp.dll"
DESTINATION "."
)

674
LICENSE
View File

@@ -1,674 +0,0 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
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"The Program" refers to any copyrightable work licensed under this
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To "modify" a work means to copy from or adapt all or part of the work
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A "covered work" means either the unmodified Program or a work based
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To "propagate" a work means to do anything with it that, without
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Copyright (C) <year> <name of author>
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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
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<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
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For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

86
README.md
View File

@@ -15,32 +15,26 @@ The app loads shader packages from `shaders/`, compiles Slang to GLSL at runtime
- `tests/`: focused native tests for pure runtime logic.
- `.gitea/workflows/ci.yml`: Gitea Actions CI for Windows native tests and Ubuntu UI build.
Native app internals are grouped by boundary:
- `videoio/`: backend-neutral video I/O contracts, formats, and playout timing.
- `videoio/decklink/`: DeckLink-specific device adapter, callbacks, and SDK bindings.
- `gl/renderer/`: low-level OpenGL resources and extension helpers.
- `gl/pipeline/`: frame pipeline, render passes, video I/O bridge, preview/readback, and screenshots.
- `gl/shader/`: shader compilation, texture/text assets, UBO packing, and shader program ownership.
## Requirements
- Windows with Visual Studio 2022 C++ tooling.
- CMake 3.24 or newer.
- Node.js and npm for the control UI.
- Blackmagic Desktop Video drivers and a DeckLink device.
- Slang binary release with `slangc.exe`, `slang-compiler.dll`, `slang-glslang.dll`, and `LICENSE`.
- Blackmagic DeckLink SDK 16.0 with the NVIDIA GPUDirect sample files available locally.
- Slang compiler available under the repo/tooling paths expected by the runtime, or otherwise discoverable by the existing app setup.
Default expected Slang path:
The Blackmagic/GPUDirect SDK should not be committed to this repository. `CMakeLists.txt` exposes `GPUDIRECT_DIR` as a cache path so local machines and CI runners can point at their installed SDK location.
Default expected SDK path:
```text
3rdParty/slang-2026.8-windows-x86_64
3rdParty/Blackmagic DeckLink SDK 16.0/Win/Samples/NVIDIA_GPUDirect
```
Override example:
```powershell
cmake --preset vs2022-x64-debug -DSLANG_ROOT="D:/SDKs/slang-2026.8-windows-x86_64"
cmake --preset vs2022-x64-debug -DGPUDIRECT_DIR="D:/SDKs/Blackmagic DeckLink SDK 16.0/Win/Samples/NVIDIA_GPUDirect"
```
## Build
@@ -81,17 +75,14 @@ The package folder will contain:
```text
dist/VideoShader/
LoopThroughWithOpenGLCompositing.exe
dvp.dll
config/
shaders/
3rdParty/slang/bin/
ui/dist/
runtime/templates/
third_party_notices/
```
You can run `LoopThroughWithOpenGLCompositing.exe` directly from that folder. In packaged mode, the app resolves `config/`, `shaders/`, `3rdParty/slang/bin/slangc.exe`, `ui/dist/`, and `runtime/templates/` relative to the exe folder. In development mode, it still falls back to repo-root discovery.
The install step copies only the Slang runtime files required by the shader compiler (`slangc.exe`, `slang-compiler.dll`, and `slang-glslang.dll`) plus `third_party_notices/SLANG_LICENSE.txt`. It does not copy the full Slang release folder.
You can run `LoopThroughWithOpenGLCompositing.exe` directly from that folder. In packaged mode, the app resolves `config/`, `shaders/`, `ui/dist/`, and `runtime/templates/` relative to the exe folder. In development mode, it still falls back to repo-root discovery.
Create a zip for distribution:
@@ -118,7 +109,7 @@ Current native test coverage includes:
- JSON parsing and serialization.
- Parameter normalization and preset filename safety.
- Shader manifest parsing, temporal manifest validation, and package registry scanning.
- Shader manifest parsing and package registry scanning.
## Runtime Configuration
@@ -135,12 +126,18 @@ Current native test coverage includes:
"outputFrameRate": "59.94",
"autoReload": true,
"maxTemporalHistoryFrames": 12,
"audioEnabled": true,
"audioChannelCount": 2,
"audioSampleRate": 48000,
"audioDelayMode": "matchVideoPreroll",
"enableExternalKeying": true
}
```
`inputVideoFormat`/`inputFrameRate` select the DeckLink capture mode. `outputVideoFormat`/`outputFrameRate` select the playout mode. The shader stack runs at input resolution and the final rendered frame is scaled once into the configured output mode. Common examples include `720p`/`50`, `720p`/`59.94`, `1080i`/`50`, `1080i`/`59.94`, `1080p`/`25`, `1080p`/`50`, `1080p`/`59.94`, and `2160p`/`59.94`, depending on card support.
`audioEnabled` enables embedded stereo 48 kHz PCM pass-through. Audio is delayed to match the scheduled video preroll and the synchronized level/spectrum data is exposed to shaders.
Legacy `videoFormat` and `frameRate` keys are still accepted and apply to both input and output unless the explicit input/output keys are present.
The control UI is available at:
@@ -149,12 +146,6 @@ The control UI is available at:
http://127.0.0.1:<serverPort>
```
## Runtime State And Presets
The current layer stack is autosaved to `runtime/runtime_state.json` whenever layers, shader assignments, bypass state, ordering, or parameter values change. On startup, the host reloads that file before compiling the stack, so the last working stack should come back automatically.
Manual stack presets are still available from the control UI and are saved under `runtime/stack_presets/*.json`. Presets are useful for named looks, while `runtime_state.json` is the latest working state for the local machine.
## Control API
The local REST control API is documented as an OpenAPI/Swagger spec:
@@ -178,12 +169,6 @@ http://127.0.0.1:<serverPort>/docs
Use those docs to inspect the `/api/state`, layer control, stack preset, and reload endpoints. Live state updates are also sent over the `/ws` WebSocket.
The control UI also has a Screenshot button. It queues a capture of the final output render target and writes a PNG under:
```text
runtime/screenshots/
```
## OSC Control
The native host also listens for local OSC parameter control on the configured `oscPort`:
@@ -202,10 +187,9 @@ Each shader package lives under:
shaders/<id>/
shader.json
shader.slang
optional-font-or-texture-assets
```
See `SHADER_CONTRACT.md` for the manifest schema, parameter types, texture assets, font/text assets, temporal history support, and the Slang entry point contract. `shaders/text-overlay/` is the reference live text package and bundles Roboto Regular with its OFL license.
See `SHADER_CONTRACT.md` for the manifest schema, parameter types, texture assets, temporal history support, and the Slang entry point contract.
## Generated Files
@@ -214,7 +198,7 @@ Runtime-generated files are intentionally ignored:
- `runtime/shader_cache/active_shader_wrapper.slang`
- `runtime/shader_cache/active_shader.raw.frag`
- `runtime/shader_cache/active_shader.frag`
- `runtime/runtime_state.json` autosaved latest stack and parameter state.
- `runtime/runtime_state.json`
- `runtime/stack_presets/*.json`
Only `runtime/templates/` and `runtime/README.md` are tracked.
@@ -223,37 +207,7 @@ Only `runtime/templates/` and `runtime/README.md` are tracked.
The Gitea workflow expects two act runners:
- `windows-2022`: builds the native app and runs native tests.
- `windows-latest`: builds the native app and runs native tests.
- `ubuntu-latest`: installs UI dependencies and runs the Vite build.
The Windows jobs validate native third-party dependencies before configuring CMake. Because `3rdParty/` is ignored, configure this path on the runner or in a Gitea repository variable:
- `SLANG_ROOT`: path to the Slang binary release folder containing `bin/slangc.exe`.
The Windows runner also needs the Visual Studio ATL component installed. In Visual Studio Build Tools 2022, add `C++ ATL for latest v143 build tools (x86 & x64)`, component ID `Microsoft.VisualStudio.Component.VC.ATL`.
Example runner paths:
```text
D:\SDKs\slang-2026.8-windows-x86_64
```
If `SLANG_ROOT` is not set, the workflow falls back to the repo-local default under `3rdParty/`.
## Still Todo
- Audio.
- Genlock.
- Find a better UI library for react.
- Logs.
- Continue source cleanup/refactoring. Pass 3 done
- Support a separate sound shader `.slang` file in shader packages. (https://www.shadertoy.com/view/XsBXWt)
- Add WebView2
- move to MSDF, typography rasterisation
- better shader search UI, pass 1
- More comprehensive greenscreen shader
- linear compositing?
- compute shaders or a small 1x1 or nx1 RGBA16f render target for abritary data store
- allow shaders to read other shaders data store based on name? or output over OSC
- Mipmappong for shader declared textures
- Multipass for shaders at request
If your Windows runner stores the Blackmagic SDK outside the repo, configure `GPUDIRECT_DIR` in the runner environment or adjust the workflow configure command to pass `-DGPUDIRECT_DIR=...`.

171
SHADER_CONTRACT.md
View File

@@ -57,31 +57,6 @@ float4 shadeVideo(ShaderContext context)
With `autoReload` enabled in `config/runtime-host.json`, edits to shader source, manifests, and declared texture assets are picked up automatically.
## Guidance For Shaders
When generating a new shader package, prefer matching the existing runtime contract over copying code verbatim from Shadertoy, GLSL sandbox sites, or WebGL demos.
Important rules:
- Generate a complete package: `shaders/<id>/shader.json` and `shaders/<id>/shader.slang`.
- Use `float4 shadeVideo(ShaderContext context)` unless the manifest explicitly sets a different `entryPoint`.
- Do not create `mainImage`, `main`, `fragColor`, `iResolution`, `iTime`, `iChannel0`, or a fragment shader attribute layout. The runtime wrapper provides the real fragment entry point.
- Replace Shadertoy `fragCoord` with `context.uv * context.outputResolution`.
- Replace `iResolution.xy` with `context.outputResolution`.
- Replace `iTime` with `context.time`.
- Replace `iFrame` with `context.frameCount`.
- Replace source-video `iChannel0` sampling with `sampleVideo(uv)` or `context.sourceColor`.
- Use Slang/HLSL names and syntax: `float2`, `float3`, `float4`, `float2x2`, `lerp`, `frac`, `saturate`, and `mul(matrix, vector)`.
- Do not use GLSL-only types/functions such as `vec2`, `vec3`, `vec4`, `mat2`, `mix`, `fract`, `mod`, `texture`, or `mainImage`.
- Keep parameter IDs, texture IDs, font IDs, and function entry points as valid shader identifiers: letters, numbers, and underscores only, starting with a letter or underscore.
- Add only controls that are actually used by the shader.
- Prefer a small number of clear controls with conservative defaults.
- Keep shaders deterministic unless randomness is an explicit feature. For stable process-level variation, use `context.startupRandom`; for per-pixel pseudo-randomness, hash from `uv`, pixel coordinates, `frameCount`, or trigger values.
- If adapting third-party code, include attribution and source URL in the manifest description when the license allows adaptation.
- If the source license is unclear or incompatible, do not add the shader package.
Before finishing, compile-check the shader through the runtime wrapper or launch the app and verify the shader appears without an error in the selector.
## Manifest Fields
`shader.json` is the runtime-facing description of the shader.
@@ -98,7 +73,6 @@ Optional fields:
- `category`: UI grouping label.
- `entryPoint`: Slang function to call. Defaults to `shadeVideo`.
- `textures`: texture assets to load and expose as samplers.
- `fonts`: packaged font assets for live text parameters.
- `temporal`: history-buffer requirements.
Shader-visible identifiers must be valid Slang-style identifiers:
@@ -106,7 +80,6 @@ Shader-visible identifiers must be valid Slang-style identifiers:
- `entryPoint`
- parameter `id`
- texture `id`
- font `id`
Use letters, numbers, and underscores only, and start with a letter or underscore. For example, `logoTexture` is valid; `logo-texture` is not valid as a shader-visible texture ID.
@@ -147,14 +120,16 @@ struct ShaderContext
float2 inputResolution;
float2 outputResolution;
float time;
float utcTimeSeconds;
float utcOffsetSeconds;
float startupRandom;
float frameCount;
float mixAmount;
float bypass;
int sourceHistoryLength;
int temporalHistoryLength;
float2 audioRms;
float2 audioPeak;
float audioMonoRms;
float audioMonoPeak;
float4 audioBands;
};
```
@@ -165,21 +140,16 @@ Fields:
- `inputResolution`: decoded input video resolution in pixels.
- `outputResolution`: shader render resolution in pixels. The current pipeline renders the shader stack at input resolution, then scales the final frame to the configured DeckLink output mode.
- `time`: elapsed runtime time in seconds.
- `utcTimeSeconds`: current UTC time of day from the host PC clock, expressed as seconds since UTC midnight.
- `utcOffsetSeconds`: host PC local UTC offset in seconds. Add this to `utcTimeSeconds` and wrap to `0..86400` to get local time of day.
- `startupRandom`: random `0..1` value generated once when the host process starts. It stays constant for the lifetime of the app and changes on the next launch.
- `frameCount`: incrementing frame counter.
- `mixAmount`: runtime mix amount.
- `bypass`: `1.0` when the layer is bypassed, otherwise `0.0`.
- `sourceHistoryLength`: number of usable source-history frames currently available.
- `temporalHistoryLength`: number of usable temporal frames currently available for this layer.
Color/precision notes:
- `context.sourceColor`, `sampleVideo()`, and temporal history samples are display-referred Rec.709-like RGB, not linear-light RGB.
- The host prefers 10-bit DeckLink YUV capture and output when the card/mode supports it, with automatic 8-bit fallback.
- Internal decoded, layer, composite, output, and temporal render targets are 16-bit floating point, so gradients and LUT work have more headroom than the packed DeckLink byte formats.
- Do not add extra Rec.709 or linear conversions unless the shader intentionally documents that behavior.
- `audioRms`: left/right RMS level for the audio block synchronized with the rendered output frame.
- `audioPeak`: left/right peak level for the same synchronized audio block.
- `audioMonoRms`: mono RMS level derived from left/right.
- `audioMonoPeak`: mono peak level derived from left/right.
- `audioBands`: four smoothed, normalized low-to-high frequency bands.
## Helper Functions
@@ -189,6 +159,8 @@ The wrapper provides:
float4 sampleVideo(float2 uv);
float4 sampleSourceHistory(int framesAgo, float2 uv);
float4 sampleTemporalHistory(int framesAgo, float2 uv);
float4 sampleAudioWaveform(float x);
float4 sampleAudioSpectrum(float x);
```
`sampleVideo` samples the live decoded source video.
@@ -197,6 +169,10 @@ float4 sampleTemporalHistory(int framesAgo, float2 uv);
`sampleTemporalHistory` samples previous pre-layer input frames for temporal shaders that request `preLayerInput` history. `framesAgo` is clamped into the available range. If no temporal history is available, it falls back to `sampleVideo`.
`sampleAudioWaveform` samples the current synchronized audio waveform texture. `x` is normalized `0..1`; returned waveform channels are encoded from `-1..1` into `0..1`.
`sampleAudioSpectrum` samples the current synchronized audio spectrum texture. Values are normalized `0..1`.
Example:
```slang
@@ -220,8 +196,6 @@ Supported types:
| `color` | `float4` | `[r, g, b, a]` |
| `bool` | `bool` | `true` or `false` |
| `enum` | `int` | selected option index |
| `text` | generated texture/helper | string |
| `trigger` | `int <id>`, `float <id>Time` | pulse/count |
Float example:
@@ -320,63 +294,12 @@ else if (mode == 2)
}
```
Text example:
```json
{
"fonts": [
{ "id": "inter", "path": "fonts/Inter-Regular.ttf" }
],
"parameters": [
{
"id": "titleText",
"label": "Title",
"type": "text",
"default": "LIVE",
"font": "inter",
"maxLength": 64
}
]
}
```
Text parameters are runtime-owned strings. They are not emitted as uniform values. Instead, the runtime renders the current string into a single-line SDF mask texture and the shader wrapper exposes helpers based on the parameter id:
```slang
float mask = sampleTitleText(textUv);
float4 premultipliedText = drawTitleText(textUv, float4(1.0, 1.0, 1.0, 1.0));
```
Text is currently limited to printable ASCII. `maxLength` defaults to `64` and is clamped to `1..256`. The optional `font` field references a packaged font declared in `fonts`; if no font is specified, the runtime uses its fallback sans-serif renderer.
Trigger example:
```json
{
"id": "flash",
"label": "Flash",
"type": "trigger"
}
```
A trigger appears as a button in the control UI. Pressing it increments the shader-visible integer `flash` and records the runtime time in `flashTime`:
```slang
float age = context.time - flashTime;
float intensity = flash > 0 ? exp(-age * 5.0) : 0.0;
color.rgb += intensity;
```
Triggers are useful for one-shot shader reactions such as flashes, ripples, cuts, or randomized looks. They do not execute arbitrary CPU code; they only update uniforms consumed by the shader.
Parameter validation:
- Float values are clamped to `min`/`max` if provided.
- `vec2` must have exactly 2 numbers.
- `color` must have exactly 4 numbers.
- Enum defaults must match one of the declared option values.
- Text defaults must be strings. Non-printable characters are dropped and values are clamped to `maxLength`.
- Trigger values are incremented by the host when triggered. The shader sees the trigger count and last trigger time.
- Non-finite numeric values are rejected.
## Texture Assets
@@ -416,31 +339,6 @@ return float4(logo.rgb * alpha, alpha);
See `shaders/dvd-bounce/` for a complete texture-driven example.
## Font Assets
Declare packaged font assets in the manifest:
```json
{
"fonts": [
{
"id": "inter",
"path": "fonts/Inter-Regular.ttf"
}
]
}
```
Rules:
- `id` must be a valid shader identifier.
- `path` is relative to the shader package directory.
- The file must exist when the manifest is loaded.
- Font asset changes trigger shader reload.
- V1 text layout is single-line; shaders position and scale the generated text texture themselves.
See `shaders/text-overlay/` for a complete live text example. The sample bundles Roboto Regular and includes its OFL license beside the font file.
## Temporal Shaders
Temporal shaders can request access to previous frames.
@@ -494,19 +392,6 @@ See `shaders/temporal-ghost-trail/` and `shaders/temporal-low-fps/` for examples
- Use `context.inputResolution` when sampling source video by input pixel size.
- `sourceColor` and `sampleVideo` return RGBA values in normalized `0..1` range.
- Prefer `saturate(color)` or explicit `clamp` before returning if your math can overshoot.
- For generated calibration charts, test patterns, gradients, and exposure ramps, state whether patch values are linear-light, display-referred gamma encoded, Rec.709 encoded, or intentionally artistic.
- For one-stop exposure patches, each patch should normally be `baseLevel * 2^patchIndex` before any display/tone encoding.
- For Rec.709 OETF encoding, use:
```slang
float rec709Oetf(float linearLevel)
{
float value = saturate(linearLevel);
if (value < 0.018)
return 4.5 * value;
return 1.099 * pow(value, 0.45) - 0.099;
}
```
Pixel-size example:
@@ -515,28 +400,6 @@ float2 pixel = 1.0 / max(context.outputResolution, float2(1.0));
float4 right = sampleVideo(context.uv + float2(pixel.x, 0.0));
```
## Animation And Timing Notes
- `context.time` is elapsed runtime time in seconds and is the default animation source for generative shaders.
- `context.frameCount` increments once per rendered output frame and is useful when an effect must be frame-locked.
- Avoid expensive CPU-like timing logic in the shader; animation should usually be a simple function of `context.time`, `context.frameCount`, trigger uniforms, or parameters.
- If a shader appears to judder only while animated, first test whether freezing its time removes the issue. That usually separates animation cadence issues from rendering or transfer issues.
- Do not add custom timer uniforms to the wrapper. Use the fields already in `ShaderContext`.
## Performance Notes
The app has to meet a fixed video frame cadence, so avoid shader code that only looks good in unconstrained browser demos.
Guidelines:
- Keep loops bounded with compile-time constants where possible.
- Avoid very high per-pixel raymarch counts by default. If a heavy loop is needed, expose a quality/steps control with a safe default.
- Prefer early exits only when they are simple; highly divergent branches can be expensive across a full frame.
- Avoid repeated texture sampling in large loops unless the effect really needs it.
- Use `context.outputResolution` carefully. A 1080p frame is over 2 million fragments; a tiny extra loop can become expensive.
- The UI render time may measure CPU command submission rather than true GPU execution time, so visual frame issues can still be GPU-related even when reported render time is small.
- Do not write debug files, allocate resources, or assume CPU-side work can happen from `shader.slang`. Shader code is GPU-only.
## Reload And Generated Files
When a shader compiles, the runtime writes generated files under `runtime/shader_cache/`:
@@ -554,7 +417,6 @@ These files are ignored by git and are useful for debugging compiler output. If
- Do not write a `[shader("fragment")]` entry point in `shader.slang`; the runtime provides it.
- Remember enum globals are integer indexes, not strings.
- Declare every texture in `shader.json`; undeclared texture samplers will not be bound.
- Declare packaged fonts in `shader.json` when text parameters should use a specific font.
- Keep temporal history requests modest. They consume texture units and memory and are capped by runtime config.
- If a parameter appears in the UI but not in Slang, the shader may still compile, but the control has no effect.
- If a Slang name collides with a generated global, rename your parameter or local symbol.
@@ -568,7 +430,6 @@ Before committing a new shader package:
- `entryPoint`, parameter IDs, and texture IDs are valid identifiers.
- `shader.slang` implements the configured entry point.
- Texture files referenced by `textures` exist.
- Font files referenced by `fonts` exist.
- Enum defaults are present in their `options`.
- Temporal shaders handle short or empty history gracefully.
- The app can reload and compile the shader without errors.

206
apps/LoopThroughWithOpenGLCompositing/AudioSupport.cpp Normal file
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@@ -0,0 +1,206 @@
#include "AudioSupport.h"
#include <algorithm>
#include <cmath>
#include <iterator>
#include <limits>
namespace
{
constexpr float kInt32ToFloat = 1.0f / 2147483648.0f;
constexpr std::size_t kAnalysisWindowSamples = 1024;
constexpr std::size_t kMaxBufferedAudioFrames = kAudioSampleRate * 10;
float Clamp01(float value)
{
return std::max(0.0f, std::min(1.0f, value));
}
float SampleToFloat(int32_t sample)
{
return std::max(-1.0f, std::min(1.0f, static_cast<float>(sample) * kInt32ToFloat));
}
float GoertzelMagnitude(const std::vector<float>& samples, float frequency)
{
if (samples.empty())
return 0.0f;
const double omega = 2.0 * 3.14159265358979323846 * static_cast<double>(frequency) / static_cast<double>(kAudioSampleRate);
const double coefficient = 2.0 * std::cos(omega);
double q0 = 0.0;
double q1 = 0.0;
double q2 = 0.0;
for (float sample : samples)
{
q0 = coefficient * q1 - q2 + static_cast<double>(sample);
q2 = q1;
q1 = q0;
}
const double power = q1 * q1 + q2 * q2 - coefficient * q1 * q2;
return static_cast<float>(std::sqrt(std::max(0.0, power)) / static_cast<double>(samples.size()));
}
}
uint64_t AudioSampleTimeForVideoFrame(uint64_t videoFrameIndex, uint64_t frameDuration, uint64_t frameTimescale, uint64_t audioSampleRate)
{
if (frameTimescale == 0)
return 0;
const uint64_t numerator = videoFrameIndex * frameDuration * audioSampleRate;
return (numerator + frameTimescale / 2) / frameTimescale;
}
unsigned AudioSamplesForVideoFrame(uint64_t videoFrameIndex, uint64_t frameDuration, uint64_t frameTimescale, uint64_t audioSampleRate)
{
const uint64_t start = AudioSampleTimeForVideoFrame(videoFrameIndex, frameDuration, frameTimescale, audioSampleRate);
const uint64_t end = AudioSampleTimeForVideoFrame(videoFrameIndex + 1, frameDuration, frameTimescale, audioSampleRate);
return static_cast<unsigned>(end > start ? end - start : 0);
}
void AudioDelayBuffer::Reset(unsigned delaySampleFrames)
{
std::lock_guard<std::mutex> lock(mMutex);
mSamples.clear();
mSamples.resize(static_cast<std::size_t>(delaySampleFrames) * kAudioChannelCount, 0);
mUnderrunCount = 0;
}
void AudioDelayBuffer::PushInterleaved(const int32_t* samples, std::size_t sampleFrameCount)
{
if (!samples || sampleFrameCount == 0)
return;
std::lock_guard<std::mutex> lock(mMutex);
const std::size_t sampleCount = sampleFrameCount * kAudioChannelCount;
for (std::size_t index = 0; index < sampleCount; ++index)
mSamples.push_back(samples[index]);
const std::size_t maxSamples = kMaxBufferedAudioFrames * kAudioChannelCount;
while (mSamples.size() > maxSamples)
mSamples.pop_front();
}
AudioFrameBlock AudioDelayBuffer::Pop(std::size_t sampleFrameCount, bool& underrun)
{
AudioFrameBlock block;
block.interleavedSamples.resize(sampleFrameCount * kAudioChannelCount, 0);
std::lock_guard<std::mutex> lock(mMutex);
const std::size_t requestedSamples = sampleFrameCount * kAudioChannelCount;
underrun = mSamples.size() < requestedSamples;
if (underrun)
++mUnderrunCount;
const std::size_t availableSamples = std::min(requestedSamples, mSamples.size());
for (std::size_t index = 0; index < availableSamples; ++index)
{
block.interleavedSamples[index] = mSamples.front();
mSamples.pop_front();
}
return block;
}
unsigned AudioDelayBuffer::BufferedSampleFrames() const
{
std::lock_guard<std::mutex> lock(mMutex);
return static_cast<unsigned>(mSamples.size() / kAudioChannelCount);
}
uint64_t AudioDelayBuffer::UnderrunCount() const
{
std::lock_guard<std::mutex> lock(mMutex);
return mUnderrunCount;
}
void AudioAnalyzer::Reset()
{
mMonoHistory.clear();
mSmoothedBands = { 0.0f, 0.0f, 0.0f, 0.0f };
mCurrent = AudioAnalysisSnapshot();
}
AudioAnalysisSnapshot AudioAnalyzer::Analyze(const AudioFrameBlock& block)
{
AudioAnalysisSnapshot next;
double sumSquares[2] = { 0.0, 0.0 };
float peak[2] = { 0.0f, 0.0f };
double monoSumSquares = 0.0;
float monoPeak = 0.0f;
const std::size_t frames = block.frameCount();
for (std::size_t frame = 0; frame < frames; ++frame)
{
const float left = SampleToFloat(block.interleavedSamples[frame * 2]);
const float right = SampleToFloat(block.interleavedSamples[frame * 2 + 1]);
const float mono = (left + right) * 0.5f;
sumSquares[0] += static_cast<double>(left) * left;
sumSquares[1] += static_cast<double>(right) * right;
peak[0] = std::max(peak[0], std::abs(left));
peak[1] = std::max(peak[1], std::abs(right));
monoSumSquares += static_cast<double>(mono) * mono;
monoPeak = std::max(monoPeak, std::abs(mono));
mMonoHistory.push_back(mono);
while (mMonoHistory.size() > kAnalysisWindowSamples)
mMonoHistory.pop_front();
}
if (frames > 0)
{
next.rms[0] = static_cast<float>(std::sqrt(sumSquares[0] / static_cast<double>(frames)));
next.rms[1] = static_cast<float>(std::sqrt(sumSquares[1] / static_cast<double>(frames)));
next.peak[0] = peak[0];
next.peak[1] = peak[1];
next.monoRms = static_cast<float>(std::sqrt(monoSumSquares / static_cast<double>(frames)));
next.monoPeak = monoPeak;
}
std::vector<float> window(mMonoHistory.begin(), mMonoHistory.end());
const float bandFrequencies[4] = { 90.0f, 300.0f, 1200.0f, 5000.0f };
for (std::size_t band = 0; band < next.bands.size(); ++band)
{
const float raw = Clamp01(GoertzelMagnitude(window, bandFrequencies[band]) * 8.0f);
const float smoothing = raw > mSmoothedBands[band] ? 0.45f : 0.12f;
mSmoothedBands[band] = mSmoothedBands[band] + (raw - mSmoothedBands[band]) * smoothing;
next.bands[band] = Clamp01(mSmoothedBands[band]);
}
for (unsigned x = 0; x < kAudioTextureWidth; ++x)
{
float mono = 0.0f;
if (!mMonoHistory.empty())
{
const std::size_t historyIndex = static_cast<std::size_t>(
(static_cast<uint64_t>(x) * static_cast<uint64_t>(mMonoHistory.size())) / kAudioTextureWidth);
auto it = mMonoHistory.begin();
std::advance(it, std::min(historyIndex, mMonoHistory.size() - 1));
mono = *it;
}
const std::size_t waveformOffset = x * 4;
next.texture[waveformOffset + 0] = mono * 0.5f + 0.5f;
next.texture[waveformOffset + 1] = next.texture[waveformOffset + 0];
next.texture[waveformOffset + 2] = next.monoRms;
next.texture[waveformOffset + 3] = 1.0f;
const float bandPosition = static_cast<float>(x) / static_cast<float>(kAudioTextureWidth - 1);
const float scaled = bandPosition * static_cast<float>(next.bands.size() - 1);
const unsigned bandA = static_cast<unsigned>(std::floor(scaled));
const unsigned bandB = std::min<unsigned>(bandA + 1, static_cast<unsigned>(next.bands.size() - 1));
const float t = scaled - static_cast<float>(bandA);
const float spectrum = next.bands[bandA] * (1.0f - t) + next.bands[bandB] * t;
const std::size_t spectrumOffset = (kAudioTextureWidth + x) * 4;
next.texture[spectrumOffset + 0] = spectrum;
next.texture[spectrumOffset + 1] = next.bands[0];
next.texture[spectrumOffset + 2] = next.bands[1];
next.texture[spectrumOffset + 3] = next.bands[2];
}
mCurrent = next;
return mCurrent;
}

71
apps/LoopThroughWithOpenGLCompositing/AudioSupport.h Normal file
View File

@@ -0,0 +1,71 @@
#pragma once
#include <array>
#include <cstdint>
#include <deque>
#include <mutex>
#include <vector>
constexpr unsigned kAudioSampleRate = 48000;
constexpr unsigned kAudioChannelCount = 2;
constexpr unsigned kAudioTextureWidth = 64;
constexpr unsigned kAudioTextureHeight = 2;
struct AudioFrameBlock
{
std::vector<int32_t> interleavedSamples;
std::size_t frameCount() const
{
return interleavedSamples.size() / kAudioChannelCount;
}
};
struct AudioAnalysisSnapshot
{
std::array<float, 2> rms = { 0.0f, 0.0f };
std::array<float, 2> peak = { 0.0f, 0.0f };
float monoRms = 0.0f;
float monoPeak = 0.0f;
std::array<float, 4> bands = { 0.0f, 0.0f, 0.0f, 0.0f };
std::array<float, kAudioTextureWidth * kAudioTextureHeight * 4> texture = {};
};
struct AudioStatusSnapshot
{
bool enabled = false;
unsigned bufferedSampleFrames = 0;
uint64_t underrunCount = 0;
AudioAnalysisSnapshot analysis;
};
class AudioDelayBuffer
{
public:
void Reset(unsigned delaySampleFrames);
void PushInterleaved(const int32_t* samples, std::size_t sampleFrameCount);
AudioFrameBlock Pop(std::size_t sampleFrameCount, bool& underrun);
unsigned BufferedSampleFrames() const;
uint64_t UnderrunCount() const;
private:
mutable std::mutex mMutex;
std::deque<int32_t> mSamples;
uint64_t mUnderrunCount = 0;
};
class AudioAnalyzer
{
public:
void Reset();
AudioAnalysisSnapshot Analyze(const AudioFrameBlock& block);
const AudioAnalysisSnapshot& Current() const { return mCurrent; }
private:
std::deque<float> mMonoHistory;
std::array<float, 4> mSmoothedBands = { 0.0f, 0.0f, 0.0f, 0.0f };
AudioAnalysisSnapshot mCurrent;
};
uint64_t AudioSampleTimeForVideoFrame(uint64_t videoFrameIndex, uint64_t frameDuration, uint64_t frameTimescale, uint64_t audioSampleRate = kAudioSampleRate);
unsigned AudioSamplesForVideoFrame(uint64_t videoFrameIndex, uint64_t frameDuration, uint64_t frameTimescale, uint64_t audioSampleRate = kAudioSampleRate);

16
apps/LoopThroughWithOpenGLCompositing/control/ControlServer.cpp → apps/LoopThroughWithOpenGLCompositing/ControlServer.cpp
View File

@@ -16,8 +16,6 @@
namespace
{
constexpr DWORD kStateBroadcastIntervalMs = 250;
bool InitializeWinsock(std::string& error)
{
WSADATA wsaData = {};
@@ -167,18 +165,9 @@ void ControlServer::BroadcastState()
void ControlServer::ServerLoop()
{
DWORD lastStateBroadcastMs = GetTickCount();
while (mRunning)
{
TryAcceptClient();
const DWORD nowMs = GetTickCount();
if (nowMs - lastStateBroadcastMs >= kStateBroadcastIntervalMs)
{
BroadcastState();
lastStateBroadcastMs = nowMs;
}
Sleep(25);
}
}
@@ -433,11 +422,6 @@ bool ControlServer::InvokePostRoute(const std::string& path, const JsonValue& ro
{
return mCallbacks.reloadShader && mCallbacks.reloadShader(error);
}
},
{ "/api/screenshot", [this](const JsonValue&, std::string& error)
{
return mCallbacks.requestScreenshot && mCallbacks.requestScreenshot(error);
}
}
};

1
apps/LoopThroughWithOpenGLCompositing/control/ControlServer.h → apps/LoopThroughWithOpenGLCompositing/ControlServer.h
View File

@@ -32,7 +32,6 @@ public:
std::function<bool(const std::string&, std::string&)> saveStackPreset;
std::function<bool(const std::string&, std::string&)> loadStackPreset;
std::function<bool(std::string&)> reloadShader;
std::function<bool(std::string&)> requestScreenshot;
};
ControlServer();

0
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkAPI_h.h → apps/LoopThroughWithOpenGLCompositing/DeckLinkAPI_h.h
View File

0
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkAPI_i.c → apps/LoopThroughWithOpenGLCompositing/DeckLinkAPI_i.c
View File

0
apps/LoopThroughWithOpenGLCompositing/gl/renderer/GLExtensions.cpp → apps/LoopThroughWithOpenGLCompositing/GLExtensions.cpp
View File

6
apps/LoopThroughWithOpenGLCompositing/gl/renderer/GLExtensions.h → apps/LoopThroughWithOpenGLCompositing/GLExtensions.h
View File

@@ -60,19 +60,13 @@
#define GL_DYNAMIC_DRAW 0x88E8
#define GL_UNIFORM_BUFFER 0x8A11
#define GL_RGBA8 0x8058
#define GL_RGBA16F 0x881A
#define GL_TEXTURE0 0x84C0
#define GL_ACTIVE_TEXTURE 0x84E0
#define GL_ARRAY_BUFFER 0x8892
#define GL_PIXEL_PACK_BUFFER 0x88EB
#define GL_PIXEL_UNPACK_BUFFER 0x88EC
#define GL_PIXEL_UNPACK_BUFFER_BINDING 0x88EF
#define GL_FRAGMENT_SHADER 0x8B30
#define GL_VERTEX_SHADER 0x8B31
#define GL_COMPILE_STATUS 0x8B81
#define GL_LINK_STATUS 0x8B82
#define GL_INVALID_INDEX 0xFFFFFFFFu
#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
#define GL_RENDERBUFFER_EXT 0x8D41
#define GL_FRAMEBUFFER_EXT 0x8D40
#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5

226
apps/LoopThroughWithOpenGLCompositing/LoopThroughWithOpenGLCompositing.cpp
View File

@@ -46,10 +46,6 @@
#include "resource.h"
#include "OpenGLComposite.h"
#include <algorithm>
#include <shellapi.h>
#include <string>
#ifndef WGL_CONTEXT_MAJOR_VERSION_ARB
#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
#endif
@@ -69,169 +65,6 @@
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
typedef HGLRC (WINAPI* PFNWGLCREATECONTEXTATTRIBSARBPROC)(HDC hdc, HGLRC hShareContext, const int* attribList);
namespace
{
const int kStatusPanelWidth = 680;
const int kStatusPanelHeight = 92;
const int kStatusPadding = 8;
const int kStatusLabelWidth = 58;
const int kStatusButtonWidth = 86;
const int kStatusRowHeight = 24;
const int kStatusGap = 6;
const UINT kCreateStatusStripMessage = WM_APP + 1;
enum StatusControlId
{
kControlUrlEditId = 2001,
kDocsUrlEditId = 2002,
kOscAddressEditId = 2003,
kOpenControlButtonId = 2004,
kOpenDocsButtonId = 2005
};
struct StatusStripControls
{
HWND panel = NULL;
HWND controlLabel = NULL;
HWND controlUrl = NULL;
HWND openControl = NULL;
HWND docsLabel = NULL;
HWND docsUrl = NULL;
HWND openDocs = NULL;
HWND oscLabel = NULL;
HWND oscAddress = NULL;
};
bool StatusStripCreated(const StatusStripControls& controls)
{
return controls.panel != NULL;
}
HWND CreateStatusChild(HWND parent, const char* className, const char* text, DWORD style, DWORD exStyle, int controlId)
{
return CreateWindowExA(
exStyle,
className,
text,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | style,
0,
0,
0,
0,
parent,
reinterpret_cast<HMENU>(static_cast<INT_PTR>(controlId)),
reinterpret_cast<HINSTANCE>(GetWindowLongPtr(parent, GWLP_HINSTANCE)),
NULL);
}
void CreateStatusStrip(HWND hWnd, StatusStripControls& controls)
{
controls.panel = CreateStatusChild(hWnd, "STATIC", "", SS_LEFT, WS_EX_CLIENTEDGE, 0);
controls.controlLabel = CreateStatusChild(hWnd, "STATIC", "Control", SS_LEFT, 0, 0);
controls.controlUrl = CreateStatusChild(hWnd, "EDIT", "", ES_AUTOHSCROLL | ES_READONLY | WS_TABSTOP, WS_EX_CLIENTEDGE, kControlUrlEditId);
controls.openControl = CreateStatusChild(hWnd, "BUTTON", "Open", BS_PUSHBUTTON | WS_TABSTOP, 0, kOpenControlButtonId);
controls.docsLabel = CreateStatusChild(hWnd, "STATIC", "Docs", SS_LEFT, 0, 0);
controls.docsUrl = CreateStatusChild(hWnd, "EDIT", "", ES_AUTOHSCROLL | ES_READONLY | WS_TABSTOP, WS_EX_CLIENTEDGE, kDocsUrlEditId);
controls.openDocs = CreateStatusChild(hWnd, "BUTTON", "Open", BS_PUSHBUTTON | WS_TABSTOP, 0, kOpenDocsButtonId);
controls.oscLabel = CreateStatusChild(hWnd, "STATIC", "OSC", SS_LEFT, 0, 0);
controls.oscAddress = CreateStatusChild(hWnd, "EDIT", "", ES_AUTOHSCROLL | ES_READONLY | WS_TABSTOP, WS_EX_CLIENTEDGE, kOscAddressEditId);
HFONT guiFont = reinterpret_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT));
HWND children[] = {
controls.controlLabel,
controls.controlUrl,
controls.openControl,
controls.docsLabel,
controls.docsUrl,
controls.openDocs,
controls.oscLabel,
controls.oscAddress
};
for (HWND child : children)
{
if (child)
SendMessage(child, WM_SETFONT, reinterpret_cast<WPARAM>(guiFont), TRUE);
}
SetWindowTextA(controls.controlUrl, "Starting control server...");
SetWindowTextA(controls.docsUrl, "Starting API docs...");
SetWindowTextA(controls.oscAddress, "Starting OSC listener...");
}
void RaiseStatusControls(const StatusStripControls& controls)
{
if (!StatusStripCreated(controls))
return;
SetWindowPos(controls.panel, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
HWND interactiveControls[] = {
controls.controlLabel,
controls.controlUrl,
controls.openControl,
controls.docsLabel,
controls.docsUrl,
controls.openDocs,
controls.oscLabel,
controls.oscAddress
};
for (HWND control : interactiveControls)
{
if (control)
SetWindowPos(control, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
}
}
void LayoutStatusStrip(HWND hWnd, const StatusStripControls& controls)
{
RECT clientRect = {};
if (!GetClientRect(hWnd, &clientRect) || !controls.panel)
return;
const int clientWidth = static_cast<int>(clientRect.right - clientRect.left);
const int clientHeight = static_cast<int>(clientRect.bottom - clientRect.top);
const int panelWidth = std::max(280, std::min(kStatusPanelWidth, clientWidth - (kStatusPadding * 2)));
const int panelHeight = kStatusPanelHeight;
const int panelLeft = kStatusPadding;
const int panelTop = std::max(kStatusPadding, clientHeight - panelHeight - kStatusPadding);
MoveWindow(controls.panel, panelLeft, panelTop, panelWidth, panelHeight, TRUE);
const int rowX = panelLeft + kStatusPadding;
const int editX = rowX + kStatusLabelWidth + kStatusGap;
const int buttonX = panelLeft + panelWidth - kStatusPadding - kStatusButtonWidth;
const int editWidth = std::max(80, buttonX - editX - kStatusGap);
const int oscWidth = std::max(80, panelLeft + panelWidth - editX - kStatusPadding);
const int row1 = panelTop + kStatusPadding;
const int row2 = row1 + kStatusRowHeight + kStatusGap;
const int row3 = row2 + kStatusRowHeight + kStatusGap;
MoveWindow(controls.controlLabel, rowX, row1 + 3, kStatusLabelWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.controlUrl, editX, row1, editWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.openControl, buttonX, row1, kStatusButtonWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.docsLabel, rowX, row2 + 3, kStatusLabelWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.docsUrl, editX, row2, editWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.openDocs, buttonX, row2, kStatusButtonWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.oscLabel, rowX, row3 + 3, kStatusLabelWidth, kStatusRowHeight, TRUE);
MoveWindow(controls.oscAddress, editX, row3, oscWidth, kStatusRowHeight, TRUE);
RaiseStatusControls(controls);
}
void UpdateStatusStrip(const StatusStripControls& controls, const OpenGLComposite& composite)
{
if (!StatusStripCreated(controls))
return;
SetWindowTextA(controls.controlUrl, composite.GetControlUrl().c_str());
SetWindowTextA(controls.docsUrl, composite.GetDocsUrl().c_str());
SetWindowTextA(controls.oscAddress, composite.GetOscAddress().c_str());
}
void OpenUrl(const char* url)
{
ShellExecuteA(NULL, "open", url, NULL, NULL, SW_SHOWNORMAL);
}
}
void ShowUnhandledExceptionMessage(const char* prefix)
{
try
@@ -370,7 +203,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
static HDC hDC = NULL; // Private GDI Device context
static OpenGLComposite* pOpenGLComposite = NULL;
static bool sInteractiveResize = false;
static StatusStripControls sStatusStrip;
switch (message)
{
@@ -419,15 +251,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
wglMakeCurrent( NULL, NULL );
if (pOpenGLComposite->Start())
{
PostMessage(hWnd, kCreateStatusStripMessage, 0, 0);
break; // success
}
MessageBoxA(NULL, "The OpenGL/DeckLink runtime initialized, but playout failed to start. See the previous DeckLink start message for the failing call.", "Startup failed", MB_OK | MB_ICONERROR);
}
else
{
MessageBoxA(NULL, "The OpenGL/DeckLink runtime failed to initialize. See the previous initialization message for the failing call.", "Startup failed", MB_OK | MB_ICONERROR);
}
// Failed to initialize - cleanup
@@ -444,25 +268,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
}
}
case kCreateStatusStripMessage:
if (pOpenGLComposite)
{
if (!StatusStripCreated(sStatusStrip))
CreateStatusStrip(hWnd, sStatusStrip);
UpdateStatusStrip(sStatusStrip, *pOpenGLComposite);
LayoutStatusStrip(hWnd, sStatusStrip);
RECT clientRect = {};
if (GetClientRect(hWnd, &clientRect))
{
pOpenGLComposite->resizeGL(
static_cast<WORD>(clientRect.right - clientRect.left),
static_cast<WORD>(clientRect.bottom - clientRect.top));
}
InvalidateRect(hWnd, NULL, FALSE);
}
break;
case WM_DESTROY:
try
{
@@ -495,11 +300,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
RECT clientRect = {};
if (GetClientRect(hWnd, &clientRect))
{
pOpenGLComposite->resizeGL(
static_cast<WORD>(clientRect.right - clientRect.left),
static_cast<WORD>(clientRect.bottom - clientRect.top));
}
pOpenGLComposite->resizeGL(static_cast<WORD>(clientRect.right - clientRect.left), static_cast<WORD>(clientRect.bottom - clientRect.top));
}
InvalidateRect(hWnd, NULL, FALSE);
break;
@@ -507,8 +308,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
case WM_SIZE:
try
{
if (StatusStripCreated(sStatusStrip))
LayoutStatusStrip(hWnd, sStatusStrip);
if (pOpenGLComposite)
pOpenGLComposite->resizeGL(LOWORD(lParam), HIWORD(lParam));
}
@@ -533,7 +332,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
wglMakeCurrent(hDC, hRC);
pOpenGLComposite->paintGL();
wglMakeCurrent( NULL, NULL );
RaiseStatusControls(sStatusStrip);
}
}
catch (...)
@@ -558,28 +356,6 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
}
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case kOpenControlButtonId:
if (pOpenGLComposite)
{
std::string url = pOpenGLComposite->GetControlUrl();
OpenUrl(url.c_str());
}
break;
case kOpenDocsButtonId:
if (pOpenGLComposite)
{
std::string url = pOpenGLComposite->GetDocsUrl();
OpenUrl(url.c_str());
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
default:
return (DefWindowProc(hWnd, message, wParam, lParam));
}

76
apps/LoopThroughWithOpenGLCompositing/LoopThroughWithOpenGLCompositing.vcxproj
View File

@@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
@@ -89,7 +89,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>.;control;gl;gl\pipeline;gl\renderer;gl\shader;videoio;videoio\decklink;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -99,11 +99,15 @@
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Link>
<AdditionalDependencies>opengl32.lib;Glu32.lib;Windowscodecs.lib;Ole32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalDependencies>dvp.lib;opengl32.lib;Glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\lib\win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<TargetMachine>MachineX86</TargetMachine>
</Link>
<PostBuildEvent>
<Command>copy /y "..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\bin\$(Platform)\dvp.dll" "$(TargetDir)"</Command>
</PostBuildEvent>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
<Midl>
@@ -111,7 +115,7 @@
</Midl>
<ClCompile>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>.;control;gl;gl\pipeline;gl\renderer;gl\shader;videoio;videoio\decklink;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -121,17 +125,21 @@
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Link>
<AdditionalDependencies>opengl32.lib;Glu32.lib;Windowscodecs.lib;Ole32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalDependencies>dvp.lib;opengl32.lib;Glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<TargetMachine>MachineX64</TargetMachine>
</Link>
<PostBuildEvent>
<Command>copy /y "..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\bin\$(Platform)\dvp.dll" "$(TargetDir)"</Command>
</PostBuildEvent>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<Optimization>MaxSpeed</Optimization>
<IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>.;control;gl;gl\pipeline;gl\renderer;gl\shader;videoio;videoio\decklink;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
<FunctionLevelLinking>true</FunctionLevelLinking>
@@ -141,13 +149,18 @@
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Link>
<AdditionalDependencies>opengl32.lib;Glu32.lib;Windowscodecs.lib;Ole32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalDependencies>dvp.lib;opengl32.lib;Glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\lib\win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<OptimizeReferences>true</OptimizeReferences>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<TargetMachine>MachineX86</TargetMachine>
</Link>
<PostBuildEvent>
<Message>Copy nececssary DLLs to target directory</Message>
<Command>copy /y "..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\bin\$(Platform)\dvp.dll" "$(TargetDir)"</Command>
</PostBuildEvent>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
<Midl>
@@ -156,7 +169,7 @@
<ClCompile>
<Optimization>MaxSpeed</Optimization>
<IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>.;control;gl;gl\pipeline;gl\renderer;gl\shader;videoio;videoio\decklink;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
<FunctionLevelLinking>true</FunctionLevelLinking>
@@ -166,62 +179,39 @@
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Link>
<AdditionalDependencies>opengl32.lib;Glu32.lib;Windowscodecs.lib;Ole32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalDependencies>dvp.lib;opengl32.lib;Glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<OptimizeReferences>true</OptimizeReferences>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<TargetMachine>MachineX64</TargetMachine>
</Link>
<PostBuildEvent>
<Command>copy /y "..\..\3rdParty\Blackmagic DeckLink SDK 16.0\Win\Samples\NVIDIA_GPUDirect\bin\$(Platform)\dvp.dll" "$(TargetDir)"</Command>
</PostBuildEvent>
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="gl\renderer\GLExtensions.cpp" />
<ClCompile Include="GLExtensions.cpp" />
<ClCompile Include="LoopThroughWithOpenGLCompositing.cpp" />
<ClCompile Include="gl\OpenGLComposite.cpp" />
<ClCompile Include="gl\pipeline\OpenGLRenderPass.cpp" />
<ClCompile Include="gl\pipeline\OpenGLRenderPipeline.cpp" />
<ClCompile Include="gl\renderer\OpenGLRenderer.cpp" />
<ClCompile Include="gl\shader\OpenGLShaderPrograms.cpp" />
<ClCompile Include="gl\pipeline\PngScreenshotWriter.cpp" />
<ClCompile Include="gl\shader\ShaderBuildQueue.cpp" />
<ClCompile Include="gl\pipeline\TemporalHistoryBuffers.cpp" />
<ClCompile Include="gl\pipeline\OpenGLVideoIOBridge.cpp" />
<ClCompile Include="OpenGLComposite.cpp" />
<ClCompile Include="stdafx.cpp">
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
<PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
</ClCompile>
<ClCompile Include="videoio\decklink\DeckLinkAPI_i.c" />
<ClCompile Include="control\RuntimeServices.cpp" />
<ClCompile Include="videoio\decklink\DeckLinkSession.cpp" />
<ClCompile Include="videoio\decklink\DeckLinkVideoIOFormat.cpp" />
<ClCompile Include="runtime\RuntimeClock.cpp" />
<ClCompile Include="videoio\VideoIOFormat.cpp" />
<ClCompile Include="videoio\VideoPlayoutScheduler.cpp" />
<ClCompile Include="VideoFrameTransfer.cpp" />
<ClCompile Include="DeckLinkAPI_i.c" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="gl\renderer\GLExtensions.h" />
<ClInclude Include="GLExtensions.h" />
<ClInclude Include="LoopThroughWithOpenGLCompositing.h" />
<ClInclude Include="gl\OpenGLComposite.h" />
<ClInclude Include="gl\pipeline\OpenGLRenderPass.h" />
<ClInclude Include="gl\pipeline\OpenGLRenderPipeline.h" />
<ClInclude Include="gl\renderer\OpenGLRenderer.h" />
<ClInclude Include="gl\shader\OpenGLShaderPrograms.h" />
<ClInclude Include="gl\pipeline\PngScreenshotWriter.h" />
<ClInclude Include="gl\shader\ShaderBuildQueue.h" />
<ClInclude Include="gl\pipeline\TemporalHistoryBuffers.h" />
<ClInclude Include="gl\pipeline\OpenGLVideoIOBridge.h" />
<ClInclude Include="OpenGLComposite.h" />
<ClInclude Include="resource.h" />
<ClInclude Include="stdafx.h" />
<ClInclude Include="targetver.h" />
<ClInclude Include="control\RuntimeServices.h" />
<ClInclude Include="videoio\decklink\DeckLinkSession.h" />
<ClInclude Include="videoio\decklink\DeckLinkVideoIOFormat.h" />
<ClInclude Include="runtime\RuntimeClock.h" />
<ClInclude Include="videoio\VideoIOFormat.h" />
<ClInclude Include="videoio\VideoIOTypes.h" />
<ClInclude Include="videoio\VideoPlayoutScheduler.h" />
<ClInclude Include="VideoFrameTransfer.h" />
</ItemGroup>
<ItemGroup>
<Image Include="LoopThroughWithOpenGLCompositing.ico" />

101
apps/LoopThroughWithOpenGLCompositing/LoopThroughWithOpenGLCompositing.vcxproj.filters
View File

@@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="Source Files">
@@ -18,96 +18,33 @@
</Filter>
</ItemGroup>
<ItemGroup>
<ClCompile Include="gl\renderer\GLExtensions.cpp">
<ClCompile Include="GLExtensions.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="LoopThroughWithOpenGLCompositing.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\OpenGLComposite.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\pipeline\OpenGLRenderPass.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\pipeline\OpenGLRenderPipeline.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\renderer\OpenGLRenderer.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\shader\OpenGLShaderPrograms.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\pipeline\PngScreenshotWriter.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\shader\ShaderBuildQueue.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\pipeline\TemporalHistoryBuffers.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="gl\pipeline\OpenGLVideoIOBridge.cpp">
<ClCompile Include="OpenGLComposite.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="stdafx.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="videoio\decklink\DeckLinkAPI_i.c">
<ClCompile Include="VideoFrameTransfer.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="DeckLinkAPI_i.c">
<Filter>DeckLink API</Filter>
</ClCompile>
<ClCompile Include="control\RuntimeServices.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="videoio\decklink\DeckLinkSession.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="videoio\decklink\DeckLinkVideoIOFormat.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="runtime\RuntimeClock.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="videoio\VideoIOFormat.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="videoio\VideoPlayoutScheduler.cpp">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="gl\renderer\GLExtensions.h">
<ClInclude Include="GLExtensions.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="LoopThroughWithOpenGLCompositing.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\OpenGLComposite.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\pipeline\OpenGLRenderPass.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\pipeline\OpenGLRenderPipeline.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\renderer\OpenGLRenderer.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\shader\OpenGLShaderPrograms.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\pipeline\PngScreenshotWriter.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\shader\ShaderBuildQueue.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\pipeline\TemporalHistoryBuffers.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="gl\pipeline\OpenGLVideoIOBridge.h">
<ClInclude Include="OpenGLComposite.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="resource.h">
@@ -119,25 +56,7 @@
<ClInclude Include="targetver.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="control\RuntimeServices.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="videoio\decklink\DeckLinkSession.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="videoio\decklink\DeckLinkVideoIOFormat.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="runtime\RuntimeClock.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="videoio\VideoIOFormat.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="videoio\VideoIOTypes.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="videoio\VideoPlayoutScheduler.h">
<ClInclude Include="VideoFrameTransfer.h">
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>

0
apps/LoopThroughWithOpenGLCompositing/platform/NativeHandles.h → apps/LoopThroughWithOpenGLCompositing/NativeHandles.h
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0
apps/LoopThroughWithOpenGLCompositing/platform/NativeSockets.h → apps/LoopThroughWithOpenGLCompositing/NativeSockets.h
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3150
apps/LoopThroughWithOpenGLCompositing/OpenGLComposite.cpp Normal file
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File diff suppressed because it is too large Load Diff

407
apps/LoopThroughWithOpenGLCompositing/OpenGLComposite.h Normal file
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@@ -0,0 +1,407 @@
/* -LICENSE-START-
** Copyright (c) 2012 Blackmagic Design
**
** Permission is hereby granted, free of charge, to any person or organization
** obtaining a copy of the software and accompanying documentation (the
** "Software") to use, reproduce, display, distribute, sub-license, execute,
** and transmit the Software, and to prepare derivative works of the Software,
** and to permit third-parties to whom the Software is furnished to do so, in
** accordance with:
**
** (1) if the Software is obtained from Blackmagic Design, the End User License
** Agreement for the Software Development Kit ("EULA") available at
** https://www.blackmagicdesign.com/EULA/DeckLinkSDK; or
**
** (2) if the Software is obtained from any third party, such licensing terms
** as notified by that third party,
**
** and all subject to the following:
**
** (3) the copyright notices in the Software and this entire statement,
** including the above license grant, this restriction and the following
** disclaimer, must be included in all copies of the Software, in whole or in
** part, and all derivative works of the Software, unless such copies or
** derivative works are solely in the form of machine-executable object code
** generated by a source language processor.
**
** (4) THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
** OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
**
** A copy of the Software is available free of charge at
** https://www.blackmagicdesign.com/desktopvideo_sdk under the EULA.
**
** -LICENSE-END-
*/
#ifndef __OPENGL_COMPOSITE_H__
#define __OPENGL_COMPOSITE_H__
#include <windows.h>
#include <process.h>
#include <tchar.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <objbase.h>
#include <atlbase.h>
#include <comutil.h>
#include "DeckLinkAPI_h.h"
#include "AudioSupport.h"
#include "VideoFrameTransfer.h"
#include "RuntimeHost.h"
#include <atomic>
#include <condition_variable>
#include <cstdint>
#include <functional>
#include <map>
#include <memory>
#include <mutex>
#include <thread>
#include <vector>
#include <deque>
class PlayoutDelegate;
class CaptureDelegate;
class PinnedMemoryAllocator;
class ControlServer;
class OscServer;
class OpenGLComposite
{
public:
OpenGLComposite(HWND hWnd, HDC hDC, HGLRC hRC);
~OpenGLComposite();
bool InitDeckLink();
bool Start();
bool Stop();
bool ReloadShader();
std::string GetRuntimeStateJson() const;
bool AddLayer(const std::string& shaderId, std::string& error);
bool RemoveLayer(const std::string& layerId, std::string& error);
bool MoveLayer(const std::string& layerId, int direction, std::string& error);
bool MoveLayerToIndex(const std::string& layerId, std::size_t targetIndex, std::string& error);
bool SetLayerBypass(const std::string& layerId, bool bypassed, std::string& error);
bool SetLayerShader(const std::string& layerId, const std::string& shaderId, std::string& error);
bool UpdateLayerParameterJson(const std::string& layerId, const std::string& parameterId, const std::string& valueJson, std::string& error);
bool UpdateLayerParameterByControlKeyJson(const std::string& layerKey, const std::string& parameterKey, const std::string& valueJson, std::string& error);
bool ResetLayerParameters(const std::string& layerId, std::string& error);
bool SaveStackPreset(const std::string& presetName, std::string& error);
bool LoadStackPreset(const std::string& presetName, std::string& error);
void resizeGL(WORD width, WORD height);
void paintGL();
void VideoFrameArrived(IDeckLinkVideoInputFrame* inputFrame, bool hasNoInputSource);
void AudioPacketArrived(IDeckLinkAudioInputPacket* audioPacket);
HRESULT RenderAudioSamples(BOOL preroll);
HRESULT ScheduleAudioToWaterLevel();
void AudioSchedulingLoop();
void PlayoutFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result);
private:
void resizeWindow(int width, int height);
bool CheckOpenGLExtensions();
CaptureDelegate* mCaptureDelegate;
PlayoutDelegate* mPlayoutDelegate;
HWND hGLWnd;
HDC hGLDC;
HGLRC hGLRC;
CRITICAL_SECTION pMutex;
// DeckLink
IDeckLinkInput* mDLInput;
IDeckLinkOutput* mDLOutput;
IDeckLinkConfiguration* mDLInputConfiguration;
IDeckLinkKeyer* mDLKeyer;
std::deque<IDeckLinkMutableVideoFrame*> mDLOutputVideoFrameQueue;
PinnedMemoryAllocator* mPlayoutAllocator;
BMDTimeValue mFrameDuration;
BMDTimeScale mFrameTimescale;
unsigned mTotalPlayoutFrames;
uint64_t mAudioOutputSampleTime;
unsigned mInputFrameWidth;
unsigned mInputFrameHeight;
unsigned mOutputFrameWidth;
unsigned mOutputFrameHeight;
std::string mInputDisplayModeName;
std::string mOutputDisplayModeName;
bool mHasNoInputSource;
std::string mDeckLinkOutputModelName;
bool mDeckLinkSupportsInternalKeying;
bool mDeckLinkSupportsExternalKeying;
bool mDeckLinkKeyerInterfaceAvailable;
bool mDeckLinkExternalKeyingActive;
std::string mDeckLinkStatusMessage;
// OpenGL data
bool mFastTransferExtensionAvailable;
GLuint mCaptureTexture;
GLuint mDecodedTexture;
GLuint mLayerTempTexture;
GLuint mFBOTexture;
GLuint mOutputTexture;
GLuint mAudioDataTexture;
GLuint mUnpinnedTextureBuffer;
GLuint mDecodeFrameBuf;
GLuint mLayerTempFrameBuf;
GLuint mIdFrameBuf;
GLuint mOutputFrameBuf;
GLuint mIdColorBuf;
GLuint mIdDepthBuf;
GLuint mFullscreenVAO;
GLuint mGlobalParamsUBO;
GLuint mDecodeProgram;
GLuint mDecodeVertexShader;
GLuint mDecodeFragmentShader;
GLsizeiptr mGlobalParamsUBOSize;
int mViewWidth;
int mViewHeight;
std::unique_ptr<RuntimeHost> mRuntimeHost;
std::unique_ptr<ControlServer> mControlServer;
std::unique_ptr<OscServer> mOscServer;
bool mAudioEnabled;
bool mAudioOutputEnabled;
bool mAudioScheduleEnabled;
bool mAudioPrerollEnabled;
bool mAudioScheduleSilence;
bool mAudioScheduleTone;
bool mAudioPrerolling;
std::atomic<bool> mAudioSchedulerRunning;
std::atomic<bool> mPlayoutCallbackActive;
std::thread mAudioSchedulerThread;
std::mutex mAudioStateMutex;
std::mutex mAudioAnalyzerMutex;
AudioAnalyzer mAudioAnalyzer;
AudioAnalysisSnapshot mAudioAnalysis;
struct TimestampedAudioPacket
{
AudioFrameBlock block;
std::vector<int32_t> scheduledOutputSamples;
BMDTimeValue streamTime = 0;
};
std::deque<TimestampedAudioPacket> mAudioPacketQueue;
std::deque<TimestampedAudioPacket> mScheduledAudioPacketRetainQueue;
std::deque<int32_t> mAudioSampleQueue;
std::condition_variable mAudioPacketQueued;
unsigned mQueuedAudioSampleFrames = 0;
uint64_t mAudioUnderrunCount = 0;
uint64_t mAudioToneSampleIndex = 0;
bool mHasFirstAudioPacketTime = false;
BMDTimeValue mFirstAudioPacketTime = 0;
struct LayerProgram
{
struct TextureBinding
{
std::string samplerName;
std::filesystem::path sourcePath;
GLuint texture = 0;
};
std::string layerId;
std::string shaderId;
GLuint program = 0;
GLuint vertexShader = 0;
GLuint fragmentShader = 0;
std::vector<TextureBinding> textureBindings;
};
std::vector<LayerProgram> mLayerPrograms;
struct HistorySlot
{
GLuint texture = 0;
GLuint framebuffer = 0;
};
struct HistoryRing
{
std::vector<HistorySlot> slots;
std::size_t nextWriteIndex = 0;
std::size_t filledCount = 0;
unsigned effectiveLength = 0;
TemporalHistorySource historySource = TemporalHistorySource::None;
};
HistoryRing mSourceHistoryRing;
std::map<std::string, HistoryRing> mPreLayerHistoryByLayerId;
bool mTemporalHistoryNeedsReset;
bool InitOpenGLState();
bool compileLayerPrograms(int errorMessageSize, char* errorMessage);
bool compileSingleLayerProgram(const RuntimeRenderState& state, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
bool compileDecodeShader(int errorMessageSize, char* errorMessage);
void destroyLayerPrograms();
void destroySingleLayerProgram(LayerProgram& layerProgram);
void destroyDecodeShaderProgram();
void renderDecodePass();
void renderShaderProgram(GLuint sourceTexture, GLuint destinationFrameBuffer, const LayerProgram& layerProgram, const RuntimeRenderState& state);
bool loadTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error);
void bindLayerTextureAssets(const LayerProgram& layerProgram);
void renderEffect();
bool PollRuntimeChanges();
void broadcastRuntimeState();
void initializeAudioDelay();
BMDTimeValue delayedAudioStreamTime() const;
void updateAudioDataTexture(const AudioAnalysisSnapshot& analysis);
void updateAudioStatus();
bool updateGlobalParamsBuffer(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength);
bool validateTemporalTextureUnitBudget(const std::vector<RuntimeRenderState>& layerStates, std::string& error) const;
bool ensureTemporalHistoryResources(const std::vector<RuntimeRenderState>& layerStates, std::string& error);
bool createHistoryRing(HistoryRing& ring, unsigned effectiveLength, TemporalHistorySource historySource, std::string& error);
void destroyHistoryRing(HistoryRing& ring);
void destroyTemporalHistoryResources();
void resetTemporalHistoryState();
void pushFramebufferToHistoryRing(GLuint sourceFramebuffer, HistoryRing& ring);
void bindHistorySamplers(const RuntimeRenderState& state, GLuint currentSourceTexture);
GLuint resolveHistoryTexture(const HistoryRing& ring, GLuint fallbackTexture, std::size_t framesAgo) const;
unsigned sourceHistoryAvailableCount() const;
unsigned temporalHistoryAvailableCountForLayer(const std::string& layerId) const;
};
////////////////////////////////////////////
// PinnedMemoryAllocator
////////////////////////////////////////////
class PinnedMemoryAllocator : public IDeckLinkVideoBufferAllocator
{
public:
PinnedMemoryAllocator(HDC hdc, HGLRC hglrc, VideoFrameTransfer::Direction direction, unsigned cacheSize, unsigned bufferSize);
virtual ~PinnedMemoryAllocator();
bool transferFrame(void* address, GLuint gpuTexture);
void waitForTransferComplete(void* address);
unsigned bufferSize() { return mBufferSize; }
// IUnknown methods
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) override;
virtual ULONG STDMETHODCALLTYPE AddRef(void) override;
virtual ULONG STDMETHODCALLTYPE Release(void) override;
// IDeckLinkVideoBufferAllocator methods
virtual HRESULT STDMETHODCALLTYPE AllocateVideoBuffer (IDeckLinkVideoBuffer** allocatedBuffer) override;
private:
void unPinAddress(void* address);
private:
HDC mHGLDC;
HGLRC mHGLRC;
std::atomic<ULONG> mRefCount;
VideoFrameTransfer::Direction mDirection;
std::map<void*, VideoFrameTransfer*> mFrameTransfer;
unsigned mBufferSize;
std::vector<void*> mFrameCache;
unsigned mFrameCacheSize;
};
////////////////////////////////////////////
// InputAllocatorPool
////////////////////////////////////////////
class InputAllocatorPool : public IDeckLinkVideoBufferAllocatorProvider
{
public:
InputAllocatorPool(HDC hdc, HGLRC hglrc);
// IUnknown interface
ULONG STDMETHODCALLTYPE AddRef() override;
ULONG STDMETHODCALLTYPE Release() override;
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void** ppv) override;
// IDeckLinkVideoBufferAllocatorProvider interface
HRESULT STDMETHODCALLTYPE GetVideoBufferAllocator(
/* [in] */ unsigned int bufferSize,
/* [in] */ unsigned int width,
/* [in] */ unsigned int height,
/* [in] */ unsigned int rowBytes,
/* [in] */ BMDPixelFormat pixelFormat,
/* [out] */ IDeckLinkVideoBufferAllocator **allocator) override;
private:
std::atomic<ULONG> mRefCount;
std::map<unsigned int, CComPtr<PinnedMemoryAllocator> > mAllocatorBySize;
HDC mHDC;
HGLRC mHGLRC;
};
////////////////////////////////////////////
// DeckLinkVideoBuffer
////////////////////////////////////////////
class DeckLinkVideoBuffer : public IDeckLinkVideoBuffer
{
public:
explicit DeckLinkVideoBuffer(std::shared_ptr<void>& buffer, PinnedMemoryAllocator* parent);
virtual ~DeckLinkVideoBuffer() = default;
// IUnknown interface
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject) override;
virtual ULONG STDMETHODCALLTYPE AddRef(void) override;
virtual ULONG STDMETHODCALLTYPE Release(void) override;
// IDeckLinkVideoBuffer interface
virtual HRESULT STDMETHODCALLTYPE GetBytes(void** buffer) override;
virtual HRESULT STDMETHODCALLTYPE GetSize(uint64_t* size) override;
virtual HRESULT STDMETHODCALLTYPE StartAccess(BMDBufferAccessFlags flags) override;
virtual HRESULT STDMETHODCALLTYPE EndAccess(BMDBufferAccessFlags flags) override;
private:
CComPtr<PinnedMemoryAllocator> mParentAllocator; // Dual-purpose: allocator owns mem this points to, and to access transferFrame() via a QueryInterface
std::atomic<ULONG> mRefCount;
std::shared_ptr<void> mBuffer;
};
////////////////////////////////////////////
// Capture Delegate Class
////////////////////////////////////////////
class CaptureDelegate : public IDeckLinkInputCallback
{
OpenGLComposite* m_pOwner;
LONG mRefCount;
public:
CaptureDelegate (OpenGLComposite* pOwner);
// IUnknown needs only a dummy implementation
virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID iid, LPVOID *ppv);
virtual ULONG STDMETHODCALLTYPE AddRef ();
virtual ULONG STDMETHODCALLTYPE Release ();
virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived (IDeckLinkVideoInputFrame *videoFrame, IDeckLinkAudioInputPacket *audioPacket);
virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged (BMDVideoInputFormatChangedEvents notificationEvents, IDeckLinkDisplayMode *newDisplayMode, BMDDetectedVideoInputFormatFlags detectedSignalFlags);
};
////////////////////////////////////////////
// Render Delegate Class
////////////////////////////////////////////
class PlayoutDelegate : public IDeckLinkVideoOutputCallback, public IDeckLinkAudioOutputCallback
{
OpenGLComposite* m_pOwner;
LONG mRefCount;
public:
PlayoutDelegate (OpenGLComposite* pOwner);
// IUnknown needs only a dummy implementation
virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID iid, LPVOID *ppv);
virtual ULONG STDMETHODCALLTYPE AddRef ();
virtual ULONG STDMETHODCALLTYPE Release ();
virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted (IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result);
virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped ();
virtual HRESULT STDMETHODCALLTYPE RenderAudioSamples (BOOL preroll);
};
#endif // __OPENGL_COMPOSITE_H__

0
apps/LoopThroughWithOpenGLCompositing/control/OscServer.cpp → apps/LoopThroughWithOpenGLCompositing/OscServer.cpp
View File

0
apps/LoopThroughWithOpenGLCompositing/control/OscServer.h → apps/LoopThroughWithOpenGLCompositing/OscServer.h
View File

505
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.cpp → apps/LoopThroughWithOpenGLCompositing/RuntimeHost.cpp
View File

@@ -1,7 +1,5 @@
#include "stdafx.h"
#include "RuntimeHost.h"
#include "RuntimeClock.h"
#include "RuntimeParameterUtils.h"
#include "ShaderCompiler.h"
#include "ShaderPackageRegistry.h"
@@ -9,7 +7,6 @@
#include <algorithm>
#include <cmath>
#include <fstream>
#include <random>
#include <set>
#include <sstream>
@@ -56,32 +53,6 @@ bool MatchesControlKey(const std::string& candidate, const std::string& key)
return candidate == key || SimplifyControlKey(candidate) == SimplifyControlKey(key);
}
double GenerateStartupRandom()
{
std::random_device randomDevice;
std::uniform_real_distribution<double> distribution(0.0, 1.0);
return distribution(randomDevice);
}
bool TryParseLayerIdNumber(const std::string& layerId, uint64_t& number)
{
const std::string prefix = "layer-";
if (layerId.rfind(prefix, 0) != 0 || layerId.size() == prefix.size())
return false;
uint64_t parsed = 0;
for (std::size_t index = prefix.size(); index < layerId.size(); ++index)
{
const unsigned char ch = static_cast<unsigned char>(layerId[index]);
if (!std::isdigit(ch))
return false;
parsed = parsed * 10 + static_cast<uint64_t>(ch - '0');
}
number = parsed;
return true;
}
std::vector<double> JsonArrayToNumbers(const JsonValue& value)
{
std::vector<double> numbers;
@@ -143,8 +114,6 @@ std::string ShaderParameterTypeToString(ShaderParameterType type)
case ShaderParameterType::Color: return "color";
case ShaderParameterType::Boolean: return "bool";
case ShaderParameterType::Enum: return "enum";
case ShaderParameterType::Text: return "text";
case ShaderParameterType::Trigger: return "trigger";
}
return "unknown";
}
@@ -191,16 +160,6 @@ bool ParseShaderParameterType(const std::string& typeName, ShaderParameterType&
type = ShaderParameterType::Enum;
return true;
}
if (typeName == "text")
{
type = ShaderParameterType::Text;
return true;
}
if (typeName == "trigger")
{
type = ShaderParameterType::Trigger;
return true;
}
return false;
}
@@ -222,24 +181,6 @@ bool TextureAssetsEqual(const std::vector<ShaderTextureAsset>& left, const std::
return true;
}
bool FontAssetsEqual(const std::vector<ShaderFontAsset>& left, const std::vector<ShaderFontAsset>& right)
{
if (left.size() != right.size())
return false;
for (std::size_t index = 0; index < left.size(); ++index)
{
if (left[index].id != right[index].id ||
left[index].path != right[index].path ||
left[index].writeTime != right[index].writeTime)
{
return false;
}
}
return true;
}
std::string ManifestPathMessage(const std::filesystem::path& manifestPath)
{
return manifestPath.string();
@@ -419,49 +360,6 @@ bool ParseTextureAssets(const JsonValue& manifestJson, ShaderPackage& shaderPack
return true;
}
bool ParseFontAssets(const JsonValue& manifestJson, ShaderPackage& shaderPackage, const std::filesystem::path& manifestPath, std::string& error)
{
const JsonValue* fontsValue = nullptr;
if (!OptionalArrayField(manifestJson, "fonts", fontsValue, manifestPath, error))
return false;
if (!fontsValue)
return true;
for (const JsonValue& fontJson : fontsValue->asArray())
{
if (!fontJson.isObject())
{
error = "Shader font entry must be an object in: " + ManifestPathMessage(manifestPath);
return false;
}
std::string fontId;
std::string fontPath;
if (!RequireNonEmptyStringField(fontJson, "id", fontId, manifestPath, error) ||
!RequireNonEmptyStringField(fontJson, "path", fontPath, manifestPath, error))
{
error = "Shader font is missing required 'id' or 'path' in: " + ManifestPathMessage(manifestPath);
return false;
}
if (!ValidateShaderIdentifier(fontId, "fonts[].id", manifestPath, error))
return false;
ShaderFontAsset fontAsset;
fontAsset.id = fontId;
fontAsset.path = shaderPackage.directoryPath / fontPath;
if (!std::filesystem::exists(fontAsset.path))
{
error = "Shader font asset not found for package " + shaderPackage.id + ": " + fontAsset.path.string();
return false;
}
fontAsset.writeTime = std::filesystem::last_write_time(fontAsset.path);
shaderPackage.fontAssets.push_back(fontAsset);
}
return true;
}
bool ParseTemporalSettings(const JsonValue& manifestJson, ShaderPackage& shaderPackage, unsigned maxTemporalHistoryFrames, const std::filesystem::path& manifestPath, std::string& error)
{
const JsonValue* temporalValue = nullptr;
@@ -544,17 +442,6 @@ bool ParseParameterDefault(const JsonValue& parameterJson, ShaderParameterDefini
return true;
}
if (definition.type == ShaderParameterType::Text)
{
if (!defaultValue->isString())
{
error = "Text parameter default must be a string for: " + definition.id;
return false;
}
definition.defaultTextValue = defaultValue->asString();
return true;
}
return NumberListFromJsonValue(*defaultValue, definition.defaultNumbers, "default", manifestPath, error);
}
@@ -637,30 +524,6 @@ bool ParseParameterDefinition(const JsonValue& parameterJson, ShaderParameterDef
return false;
}
if (definition.type == ShaderParameterType::Text)
{
if (const JsonValue* fontValue = parameterJson.find("font"))
{
if (!fontValue->isString())
{
error = "Text parameter 'font' must be a string for: " + definition.id;
return false;
}
definition.fontId = fontValue->asString();
if (!definition.fontId.empty() && !ValidateShaderIdentifier(definition.fontId, "parameters[].font", manifestPath, error))
return false;
}
if (const JsonValue* maxLengthValue = parameterJson.find("maxLength"))
{
if (!maxLengthValue->isNumber() || maxLengthValue->asNumber() < 1.0 || maxLengthValue->asNumber() > 256.0)
{
error = "Text parameter 'maxLength' must be a number from 1 to 256 for: " + definition.id;
return false;
}
definition.maxLength = static_cast<unsigned>(maxLengthValue->asNumber());
}
}
if (definition.type == ShaderParameterType::Enum)
return ParseParameterOptions(parameterJson, definition, manifestPath, error);
@@ -696,13 +559,6 @@ RuntimeHost::RuntimeHost()
mFrameBudgetMilliseconds(0.0),
mRenderMilliseconds(0.0),
mSmoothedRenderMilliseconds(0.0),
mCompletionIntervalMilliseconds(0.0),
mSmoothedCompletionIntervalMilliseconds(0.0),
mMaxCompletionIntervalMilliseconds(0.0),
mStartupRandom(GenerateStartupRandom()),
mLateFrameCount(0),
mDroppedFrameCount(0),
mFlushedFrameCount(0),
mServerPort(8080),
mAutoReloadEnabled(true),
mStartTime(std::chrono::steady_clock::now()),
@@ -727,7 +583,6 @@ bool RuntimeHost::Initialize(std::string& error)
return false;
if (!ScanShaderPackages(error))
return false;
NormalizePersistentLayerIdsLocked();
for (LayerPersistentState& layer : mPersistentState.layers)
{
@@ -818,8 +673,7 @@ bool RuntimeHost::PollFileChanges(bool& registryChanged, bool& reloadRequested,
}
if (previous->second.shaderWriteTime != item.second.shaderWriteTime ||
previous->second.manifestWriteTime != item.second.manifestWriteTime ||
!TextureAssetsEqual(previous->second.textureAssets, item.second.textureAssets) ||
!FontAssetsEqual(previous->second.fontAssets, item.second.fontAssets))
!TextureAssetsEqual(previous->second.textureAssets, item.second.textureAssets))
{
registryChanged = true;
break;
@@ -840,8 +694,7 @@ bool RuntimeHost::PollFileChanges(bool& registryChanged, bool& reloadRequested,
if (previous->second.first != active->second.shaderWriteTime ||
previous->second.second != active->second.manifestWriteTime ||
(previousPackage != previousPackages.end() &&
(!TextureAssetsEqual(previousPackage->second.textureAssets, active->second.textureAssets) ||
!FontAssetsEqual(previousPackage->second.fontAssets, active->second.fontAssets))))
!TextureAssetsEqual(previousPackage->second.textureAssets, active->second.textureAssets)))
{
mReloadRequested = true;
}
@@ -1026,15 +879,6 @@ bool RuntimeHost::UpdateLayerParameter(const std::string& layerId, const std::st
return false;
}
if (parameterIt->type == ShaderParameterType::Trigger)
{
ShaderParameterValue& value = layer->parameterValues[parameterId];
const double previousCount = value.numberValues.empty() ? 0.0 : value.numberValues[0];
const double triggerTime = std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::steady_clock::now() - mStartTime).count();
value.numberValues = { previousCount + 1.0, triggerTime };
return true;
}
ShaderParameterValue normalized;
if (!NormalizeAndValidateValue(*parameterIt, newValue, normalized, error))
return false;
@@ -1081,15 +925,6 @@ bool RuntimeHost::UpdateLayerParameterByControlKey(const std::string& layerKey,
return false;
}
if (parameterIt->type == ShaderParameterType::Trigger)
{
ShaderParameterValue& value = matchedLayer->parameterValues[parameterIt->id];
const double previousCount = value.numberValues.empty() ? 0.0 : value.numberValues[0];
const double triggerTime = std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::steady_clock::now() - mStartTime).count();
value.numberValues = { previousCount + 1.0, triggerTime };
return true;
}
ShaderParameterValue normalized;
if (!NormalizeAndValidateValue(*parameterIt, newValue, normalized, error))
return false;
@@ -1190,21 +1025,6 @@ void RuntimeHost::SetCompileStatus(bool succeeded, const std::string& message)
void RuntimeHost::SetSignalStatus(bool hasSignal, unsigned width, unsigned height, const std::string& modeName)
{
std::lock_guard<std::mutex> lock(mMutex);
SetSignalStatusLocked(hasSignal, width, height, modeName);
}
bool RuntimeHost::TrySetSignalStatus(bool hasSignal, unsigned width, unsigned height, const std::string& modeName)
{
std::unique_lock<std::mutex> lock(mMutex, std::try_to_lock);
if (!lock.owns_lock())
return false;
SetSignalStatusLocked(hasSignal, width, height, modeName);
return true;
}
void RuntimeHost::SetSignalStatusLocked(bool hasSignal, unsigned width, unsigned height, const std::string& modeName)
{
mHasSignal = hasSignal;
mSignalWidth = width;
mSignalHeight = height;
@@ -1213,16 +1033,8 @@ void RuntimeHost::SetSignalStatusLocked(bool hasSignal, unsigned width, unsigned
void RuntimeHost::SetDeckLinkOutputStatus(const std::string& modelName, bool supportsInternalKeying, bool supportsExternalKeying,
bool keyerInterfaceAvailable, bool externalKeyingRequested, bool externalKeyingActive, const std::string& statusMessage)
{
SetVideoIOStatus("decklink", modelName, supportsInternalKeying, supportsExternalKeying, keyerInterfaceAvailable,
externalKeyingRequested, externalKeyingActive, statusMessage);
}
void RuntimeHost::SetVideoIOStatus(const std::string& backendName, const std::string& modelName, bool supportsInternalKeying, bool supportsExternalKeying,
bool keyerInterfaceAvailable, bool externalKeyingRequested, bool externalKeyingActive, const std::string& statusMessage)
{
std::lock_guard<std::mutex> lock(mMutex);
mDeckLinkOutputStatus.backendName = backendName;
mDeckLinkOutputStatus.modelName = modelName;
mDeckLinkOutputStatus.supportsInternalKeying = supportsInternalKeying;
mDeckLinkOutputStatus.supportsExternalKeying = supportsExternalKeying;
@@ -1235,21 +1047,6 @@ void RuntimeHost::SetVideoIOStatus(const std::string& backendName, const std::st
void RuntimeHost::SetPerformanceStats(double frameBudgetMilliseconds, double renderMilliseconds)
{
std::lock_guard<std::mutex> lock(mMutex);
SetPerformanceStatsLocked(frameBudgetMilliseconds, renderMilliseconds);
}
bool RuntimeHost::TrySetPerformanceStats(double frameBudgetMilliseconds, double renderMilliseconds)
{
std::unique_lock<std::mutex> lock(mMutex, std::try_to_lock);
if (!lock.owns_lock())
return false;
SetPerformanceStatsLocked(frameBudgetMilliseconds, renderMilliseconds);
return true;
}
void RuntimeHost::SetPerformanceStatsLocked(double frameBudgetMilliseconds, double renderMilliseconds)
{
mFrameBudgetMilliseconds = std::max(frameBudgetMilliseconds, 0.0);
mRenderMilliseconds = std::max(renderMilliseconds, 0.0);
if (mSmoothedRenderMilliseconds <= 0.0)
@@ -1258,48 +1055,18 @@ void RuntimeHost::SetPerformanceStatsLocked(double frameBudgetMilliseconds, doub
mSmoothedRenderMilliseconds = mSmoothedRenderMilliseconds * 0.9 + mRenderMilliseconds * 0.1;
}
void RuntimeHost::SetFramePacingStats(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount)
void RuntimeHost::SetAudioStatus(const AudioStatusSnapshot& status)
{
std::lock_guard<std::mutex> lock(mMutex);
SetFramePacingStatsLocked(completionIntervalMilliseconds, smoothedCompletionIntervalMilliseconds,
maxCompletionIntervalMilliseconds, lateFrameCount, droppedFrameCount, flushedFrameCount);
}
bool RuntimeHost::TrySetFramePacingStats(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount)
{
std::unique_lock<std::mutex> lock(mMutex, std::try_to_lock);
if (!lock.owns_lock())
return false;
SetFramePacingStatsLocked(completionIntervalMilliseconds, smoothedCompletionIntervalMilliseconds,
maxCompletionIntervalMilliseconds, lateFrameCount, droppedFrameCount, flushedFrameCount);
return true;
}
void RuntimeHost::SetFramePacingStatsLocked(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount)
{
mCompletionIntervalMilliseconds = std::max(completionIntervalMilliseconds, 0.0);
mSmoothedCompletionIntervalMilliseconds = std::max(smoothedCompletionIntervalMilliseconds, 0.0);
mMaxCompletionIntervalMilliseconds = std::max(maxCompletionIntervalMilliseconds, 0.0);
mLateFrameCount = lateFrameCount;
mDroppedFrameCount = droppedFrameCount;
mFlushedFrameCount = flushedFrameCount;
mAudioStatus = status;
}
void RuntimeHost::AdvanceFrame()
{
std::lock_guard<std::mutex> lock(mMutex);
++mFrameCounter;
}
bool RuntimeHost::TryAdvanceFrame()
{
++mFrameCounter;
return true;
}
bool RuntimeHost::BuildLayerFragmentShaderSource(const std::string& layerId, std::string& fragmentShaderSource, std::string& error)
{
try
@@ -1342,39 +1109,7 @@ std::vector<RuntimeRenderState> RuntimeHost::GetLayerRenderStates(unsigned outpu
{
std::lock_guard<std::mutex> lock(mMutex);
std::vector<RuntimeRenderState> states;
BuildLayerRenderStatesLocked(outputWidth, outputHeight, states);
return states;
}
bool RuntimeHost::TryGetLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const
{
std::unique_lock<std::mutex> lock(mMutex, std::try_to_lock);
if (!lock.owns_lock())
return false;
states.clear();
BuildLayerRenderStatesLocked(outputWidth, outputHeight, states);
return true;
}
void RuntimeHost::RefreshDynamicRenderStateFields(std::vector<RuntimeRenderState>& states) const
{
const RuntimeClockSnapshot clock = GetRuntimeClockSnapshot();
const double timeSeconds = std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::steady_clock::now() - mStartTime).count();
const double frameCount = static_cast<double>(mFrameCounter.load(std::memory_order_relaxed));
for (RuntimeRenderState& state : states)
{
state.timeSeconds = timeSeconds;
state.utcTimeSeconds = clock.utcTimeSeconds;
state.utcOffsetSeconds = clock.utcOffsetSeconds;
state.startupRandom = mStartupRandom;
state.frameCount = frameCount;
}
}
void RuntimeHost::BuildLayerRenderStatesLocked(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const
{
for (const LayerPersistentState& layer : mPersistentState.layers)
{
auto shaderIt = mPackagesById.find(layer.shaderId);
@@ -1384,15 +1119,17 @@ void RuntimeHost::BuildLayerRenderStatesLocked(unsigned outputWidth, unsigned ou
RuntimeRenderState state;
state.layerId = layer.id;
state.shaderId = layer.shaderId;
state.timeSeconds = std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::steady_clock::now() - mStartTime).count();
state.frameCount = static_cast<double>(mFrameCounter);
state.mixAmount = 1.0;
state.bypass = layer.bypass ? 1.0 : 0.0;
state.inputWidth = mSignalWidth;
state.inputHeight = mSignalHeight;
state.outputWidth = outputWidth;
state.outputHeight = outputHeight;
state.audioAnalysis = mAudioStatus.analysis;
state.parameterDefinitions = shaderIt->second.parameters;
state.textureAssets = shaderIt->second.textureAssets;
state.fontAssets = shaderIt->second.fontAssets;
state.isTemporal = shaderIt->second.temporal.enabled;
state.temporalHistorySource = shaderIt->second.temporal.historySource;
state.requestedTemporalHistoryLength = shaderIt->second.temporal.requestedHistoryLength;
@@ -1410,7 +1147,7 @@ void RuntimeHost::BuildLayerRenderStatesLocked(unsigned outputWidth, unsigned ou
states.push_back(state);
}
RefreshDynamicRenderStateFields(states);
return states;
}
std::string RuntimeHost::BuildStateJson() const
@@ -1452,6 +1189,31 @@ bool RuntimeHost::LoadConfig(std::string& error)
}
if (const JsonValue* enableExternalKeyingValue = configJson.find("enableExternalKeying"))
mConfig.enableExternalKeying = enableExternalKeyingValue->asBoolean(mConfig.enableExternalKeying);
if (const JsonValue* audioEnabledValue = configJson.find("audioEnabled"))
mConfig.audioEnabled = audioEnabledValue->asBoolean(mConfig.audioEnabled);
if (const JsonValue* audioOutputEnabledValue = configJson.find("audioOutputEnabled"))
mConfig.audioOutputEnabled = audioOutputEnabledValue->asBoolean(mConfig.audioOutputEnabled);
if (const JsonValue* audioScheduleEnabledValue = configJson.find("audioScheduleEnabled"))
mConfig.audioScheduleEnabled = audioScheduleEnabledValue->asBoolean(mConfig.audioScheduleEnabled);
if (const JsonValue* audioPrerollEnabledValue = configJson.find("audioPrerollEnabled"))
mConfig.audioPrerollEnabled = audioPrerollEnabledValue->asBoolean(mConfig.audioPrerollEnabled);
if (const JsonValue* audioScheduleSilenceValue = configJson.find("audioScheduleSilence"))
mConfig.audioScheduleSilence = audioScheduleSilenceValue->asBoolean(mConfig.audioScheduleSilence);
if (const JsonValue* audioScheduleToneValue = configJson.find("audioScheduleTone"))
mConfig.audioScheduleTone = audioScheduleToneValue->asBoolean(mConfig.audioScheduleTone);
if (const JsonValue* audioChannelCountValue = configJson.find("audioChannelCount"))
mConfig.audioChannelCount = static_cast<unsigned>(audioChannelCountValue->asNumber(static_cast<double>(mConfig.audioChannelCount)));
if (const JsonValue* audioSampleRateValue = configJson.find("audioSampleRate"))
mConfig.audioSampleRate = static_cast<unsigned>(audioSampleRateValue->asNumber(static_cast<double>(mConfig.audioSampleRate)));
if (const JsonValue* audioDelayModeValue = configJson.find("audioDelayMode"))
{
if (audioDelayModeValue->isString() && !audioDelayModeValue->asString().empty())
mConfig.audioDelayMode = audioDelayModeValue->asString();
}
if (mConfig.audioChannelCount != kAudioChannelCount)
mConfig.audioChannelCount = kAudioChannelCount;
if (mConfig.audioSampleRate != kAudioSampleRate)
mConfig.audioSampleRate = kAudioSampleRate;
if (const JsonValue* videoFormatValue = configJson.find("videoFormat"))
{
if (videoFormatValue->isString() && !videoFormatValue->asString().empty())
@@ -1651,14 +1413,12 @@ bool RuntimeHost::ScanShaderPackages(std::string& error)
{
std::map<std::string, ShaderPackage> packagesById;
std::vector<std::string> packageOrder;
std::vector<ShaderPackageStatus> packageStatuses;
ShaderPackageRegistry registry(mConfig.maxTemporalHistoryFrames);
if (!registry.Scan(mShaderRoot, packagesById, packageOrder, packageStatuses, error))
if (!registry.Scan(mShaderRoot, packagesById, packageOrder, error))
return false;
mPackagesById.swap(packagesById);
mPackageOrder.swap(packageOrder);
mPackageStatuses.swap(packageStatuses);
for (auto it = mPersistentState.layers.begin(); it != mPersistentState.layers.end();)
{
@@ -1699,7 +1459,6 @@ bool RuntimeHost::ParseShaderManifest(const std::filesystem::path& manifestPath,
shaderPackage.manifestWriteTime = std::filesystem::last_write_time(shaderPackage.manifestPath);
return ParseTextureAssets(manifestJson, shaderPackage, manifestPath, error) &&
ParseFontAssets(manifestJson, shaderPackage, manifestPath, error) &&
ParseTemporalSettings(manifestJson, shaderPackage, mConfig.maxTemporalHistoryFrames, manifestPath, error) &&
ParseParameterDefinitions(manifestJson, shaderPackage, manifestPath, error);
}
@@ -1718,68 +1477,8 @@ void RuntimeHost::EnsureLayerDefaultsLocked(LayerPersistentState& layerState, co
{
for (const ShaderParameterDefinition& definition : shaderPackage.parameters)
{
auto valueIt = layerState.parameterValues.find(definition.id);
if (valueIt == layerState.parameterValues.end())
{
if (layerState.parameterValues.find(definition.id) == layerState.parameterValues.end())
layerState.parameterValues[definition.id] = DefaultValueForDefinition(definition);
continue;
}
JsonValue valueJson;
bool shouldNormalize = true;
switch (definition.type)
{
case ShaderParameterType::Float:
if (valueIt->second.numberValues.empty())
shouldNormalize = false;
else
valueJson = JsonValue(valueIt->second.numberValues.front());
break;
case ShaderParameterType::Vec2:
case ShaderParameterType::Color:
valueJson = JsonValue::MakeArray();
for (double number : valueIt->second.numberValues)
valueJson.pushBack(JsonValue(number));
break;
case ShaderParameterType::Boolean:
valueJson = JsonValue(valueIt->second.booleanValue);
break;
case ShaderParameterType::Enum:
valueJson = JsonValue(valueIt->second.enumValue);
break;
case ShaderParameterType::Text:
{
const std::string textValue = !valueIt->second.textValue.empty()
? valueIt->second.textValue
: valueIt->second.enumValue;
if (textValue.empty())
{
valueIt->second = DefaultValueForDefinition(definition);
shouldNormalize = false;
}
else
{
valueJson = JsonValue(textValue);
}
break;
}
case ShaderParameterType::Trigger:
if (valueIt->second.numberValues.empty())
valueJson = JsonValue(0.0);
else
valueJson = JsonValue(std::max(0.0, std::floor(valueIt->second.numberValues.front())));
break;
}
if (!shouldNormalize)
continue;
ShaderParameterValue normalizedValue;
std::string normalizeError;
if (NormalizeAndValidateValue(definition, valueJson, normalizedValue, normalizeError))
valueIt->second = normalizedValue;
else
valueIt->second = DefaultValueForDefinition(definition);
}
}
@@ -1802,31 +1501,15 @@ bool RuntimeHost::WriteTextFile(const std::filesystem::path& path, const std::st
std::error_code fsError;
std::filesystem::create_directories(path.parent_path(), fsError);
const std::filesystem::path temporaryPath = path.string() + ".tmp";
std::ofstream output(temporaryPath, std::ios::binary | std::ios::trunc);
std::ofstream output(path, std::ios::binary);
if (!output)
{
error = "Could not write file: " + temporaryPath.string();
error = "Could not write file: " + path.string();
return false;
}
output << contents;
output.close();
if (!output.good())
{
error = "Could not finish writing file: " + temporaryPath.string();
return false;
}
if (!MoveFileExA(temporaryPath.string().c_str(), path.string().c_str(), MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH))
{
const DWORD lastError = GetLastError();
std::filesystem::remove(temporaryPath, fsError);
error = "Could not replace file: " + path.string() + " (Win32 error " + std::to_string(lastError) + ")";
return false;
}
return true;
return output.good();
}
bool RuntimeHost::ResolvePaths(std::string& error)
@@ -1868,6 +1551,15 @@ JsonValue RuntimeHost::BuildStateValue() const
app.set("autoReload", JsonValue(mAutoReloadEnabled));
app.set("maxTemporalHistoryFrames", JsonValue(static_cast<double>(mConfig.maxTemporalHistoryFrames)));
app.set("enableExternalKeying", JsonValue(mConfig.enableExternalKeying));
app.set("audioEnabled", JsonValue(mConfig.audioEnabled));
app.set("audioOutputEnabled", JsonValue(mConfig.audioOutputEnabled));
app.set("audioScheduleEnabled", JsonValue(mConfig.audioScheduleEnabled));
app.set("audioPrerollEnabled", JsonValue(mConfig.audioPrerollEnabled));
app.set("audioScheduleSilence", JsonValue(mConfig.audioScheduleSilence));
app.set("audioScheduleTone", JsonValue(mConfig.audioScheduleTone));
app.set("audioChannelCount", JsonValue(static_cast<double>(mConfig.audioChannelCount)));
app.set("audioSampleRate", JsonValue(static_cast<double>(mConfig.audioSampleRate)));
app.set("audioDelayMode", JsonValue(mConfig.audioDelayMode));
app.set("inputVideoFormat", JsonValue(mConfig.inputVideoFormat));
app.set("inputFrameRate", JsonValue(mConfig.inputFrameRate));
app.set("outputVideoFormat", JsonValue(mConfig.outputVideoFormat));
@@ -1887,6 +1579,26 @@ JsonValue RuntimeHost::BuildStateValue() const
video.set("modeName", JsonValue(mSignalModeName));
root.set("video", video);
JsonValue audio = JsonValue::MakeObject();
audio.set("enabled", JsonValue(mAudioStatus.enabled));
audio.set("bufferedSampleFrames", JsonValue(static_cast<double>(mAudioStatus.bufferedSampleFrames)));
audio.set("underrunCount", JsonValue(static_cast<double>(mAudioStatus.underrunCount)));
JsonValue rms = JsonValue::MakeArray();
rms.pushBack(JsonValue(static_cast<double>(mAudioStatus.analysis.rms[0])));
rms.pushBack(JsonValue(static_cast<double>(mAudioStatus.analysis.rms[1])));
audio.set("rms", rms);
JsonValue peak = JsonValue::MakeArray();
peak.pushBack(JsonValue(static_cast<double>(mAudioStatus.analysis.peak[0])));
peak.pushBack(JsonValue(static_cast<double>(mAudioStatus.analysis.peak[1])));
audio.set("peak", peak);
audio.set("monoRms", JsonValue(static_cast<double>(mAudioStatus.analysis.monoRms)));
audio.set("monoPeak", JsonValue(static_cast<double>(mAudioStatus.analysis.monoPeak)));
JsonValue bands = JsonValue::MakeArray();
for (float band : mAudioStatus.analysis.bands)
bands.pushBack(JsonValue(static_cast<double>(band)));
audio.set("bands", bands);
root.set("audio", audio);
JsonValue deckLink = JsonValue::MakeObject();
deckLink.set("modelName", JsonValue(mDeckLinkOutputStatus.modelName));
deckLink.set("supportsInternalKeying", JsonValue(mDeckLinkOutputStatus.supportsInternalKeying));
@@ -1897,44 +1609,26 @@ JsonValue RuntimeHost::BuildStateValue() const
deckLink.set("statusMessage", JsonValue(mDeckLinkOutputStatus.statusMessage));
root.set("decklink", deckLink);
JsonValue videoIO = JsonValue::MakeObject();
videoIO.set("backend", JsonValue(mDeckLinkOutputStatus.backendName));
videoIO.set("modelName", JsonValue(mDeckLinkOutputStatus.modelName));
videoIO.set("supportsInternalKeying", JsonValue(mDeckLinkOutputStatus.supportsInternalKeying));
videoIO.set("supportsExternalKeying", JsonValue(mDeckLinkOutputStatus.supportsExternalKeying));
videoIO.set("keyerInterfaceAvailable", JsonValue(mDeckLinkOutputStatus.keyerInterfaceAvailable));
videoIO.set("externalKeyingRequested", JsonValue(mDeckLinkOutputStatus.externalKeyingRequested));
videoIO.set("externalKeyingActive", JsonValue(mDeckLinkOutputStatus.externalKeyingActive));
videoIO.set("statusMessage", JsonValue(mDeckLinkOutputStatus.statusMessage));
root.set("videoIO", videoIO);
JsonValue performance = JsonValue::MakeObject();
performance.set("frameBudgetMs", JsonValue(mFrameBudgetMilliseconds));
performance.set("renderMs", JsonValue(mRenderMilliseconds));
performance.set("smoothedRenderMs", JsonValue(mSmoothedRenderMilliseconds));
performance.set("budgetUsedPercent", JsonValue(mFrameBudgetMilliseconds > 0.0 ? (mSmoothedRenderMilliseconds / mFrameBudgetMilliseconds) * 100.0 : 0.0));
performance.set("completionIntervalMs", JsonValue(mCompletionIntervalMilliseconds));
performance.set("smoothedCompletionIntervalMs", JsonValue(mSmoothedCompletionIntervalMilliseconds));
performance.set("maxCompletionIntervalMs", JsonValue(mMaxCompletionIntervalMilliseconds));
performance.set("lateFrameCount", JsonValue(static_cast<double>(mLateFrameCount)));
performance.set("droppedFrameCount", JsonValue(static_cast<double>(mDroppedFrameCount)));
performance.set("flushedFrameCount", JsonValue(static_cast<double>(mFlushedFrameCount)));
root.set("performance", performance);
JsonValue shaderLibrary = JsonValue::MakeArray();
for (const ShaderPackageStatus& status : mPackageStatuses)
for (const std::string& shaderId : mPackageOrder)
{
JsonValue shader = JsonValue::MakeObject();
shader.set("id", JsonValue(status.id));
shader.set("name", JsonValue(status.displayName));
shader.set("description", JsonValue(status.description));
shader.set("category", JsonValue(status.category));
shader.set("available", JsonValue(status.available));
if (!status.available)
shader.set("error", JsonValue(status.error));
auto shaderIt = mPackagesById.find(shaderId);
if (shaderIt == mPackagesById.end())
continue;
auto shaderIt = mPackagesById.find(status.id);
if (status.available && shaderIt != mPackagesById.end() && shaderIt->second.temporal.enabled)
JsonValue shader = JsonValue::MakeObject();
shader.set("id", JsonValue(shaderIt->second.id));
shader.set("name", JsonValue(shaderIt->second.displayName));
shader.set("description", JsonValue(shaderIt->second.description));
shader.set("category", JsonValue(shaderIt->second.category));
if (shaderIt->second.temporal.enabled)
{
JsonValue temporal = JsonValue::MakeObject();
temporal.set("enabled", JsonValue(true));
@@ -1988,7 +1682,6 @@ JsonValue RuntimeHost::SerializeLayerStackLocked() const
parameter.set("id", JsonValue(definition.id));
parameter.set("label", JsonValue(definition.label));
parameter.set("type", JsonValue(ShaderParameterTypeToString(definition.type)));
parameter.set("defaultValue", SerializeParameterValue(definition, DefaultValueForDefinition(definition)));
if (!definition.minNumbers.empty())
{
@@ -2023,12 +1716,6 @@ JsonValue RuntimeHost::SerializeLayerStackLocked() const
}
parameter.set("options", options);
}
if (definition.type == ShaderParameterType::Text)
{
parameter.set("maxLength", JsonValue(static_cast<double>(definition.maxLength)));
if (!definition.fontId.empty())
parameter.set("font", JsonValue(definition.fontId));
}
ShaderParameterValue value = DefaultValueForDefinition(definition);
auto valueIt = layer.parameterValues.find(definition.id);
@@ -2102,38 +1789,6 @@ bool RuntimeHost::DeserializeLayerStackLocked(const JsonValue& layersValue, std:
return true;
}
void RuntimeHost::NormalizePersistentLayerIdsLocked()
{
std::set<std::string> usedIds;
uint64_t maxLayerNumber = mNextLayerId;
for (LayerPersistentState& layer : mPersistentState.layers)
{
uint64_t layerNumber = 0;
const bool hasReusableId = !layer.id.empty() &&
usedIds.find(layer.id) == usedIds.end() &&
TryParseLayerIdNumber(layer.id, layerNumber);
if (hasReusableId)
{
usedIds.insert(layer.id);
maxLayerNumber = std::max(maxLayerNumber, layerNumber);
continue;
}
do
{
++maxLayerNumber;
layer.id = "layer-" + std::to_string(maxLayerNumber);
}
while (usedIds.find(layer.id) != usedIds.end());
usedIds.insert(layer.id);
}
mNextLayerId = maxLayerNumber;
}
std::vector<std::string> RuntimeHost::GetStackPresetNamesLocked() const
{
std::vector<std::string> presetNames;
@@ -2167,10 +1822,6 @@ JsonValue RuntimeHost::SerializeParameterValue(const ShaderParameterDefinition&
return JsonValue(value.booleanValue);
case ShaderParameterType::Enum:
return JsonValue(value.enumValue);
case ShaderParameterType::Text:
return JsonValue(value.textValue);
case ShaderParameterType::Trigger:
return JsonValue(value.numberValues.empty() ? 0.0 : value.numberValues.front());
case ShaderParameterType::Float:
return JsonValue(value.numberValues.empty() ? 0.0 : value.numberValues.front());
case ShaderParameterType::Vec2:

48
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.h → apps/LoopThroughWithOpenGLCompositing/RuntimeHost.h
View File

@@ -3,7 +3,6 @@
#include "RuntimeJson.h"
#include "ShaderTypes.h"
#include <atomic>
#include <chrono>
#include <filesystem>
#include <map>
@@ -36,24 +35,14 @@ public:
void SetCompileStatus(bool succeeded, const std::string& message);
void SetSignalStatus(bool hasSignal, unsigned width, unsigned height, const std::string& modeName);
bool TrySetSignalStatus(bool hasSignal, unsigned width, unsigned height, const std::string& modeName);
void SetDeckLinkOutputStatus(const std::string& modelName, bool supportsInternalKeying, bool supportsExternalKeying,
bool keyerInterfaceAvailable, bool externalKeyingRequested, bool externalKeyingActive, const std::string& statusMessage);
void SetVideoIOStatus(const std::string& backendName, const std::string& modelName, bool supportsInternalKeying, bool supportsExternalKeying,
bool keyerInterfaceAvailable, bool externalKeyingRequested, bool externalKeyingActive, const std::string& statusMessage);
void SetPerformanceStats(double frameBudgetMilliseconds, double renderMilliseconds);
bool TrySetPerformanceStats(double frameBudgetMilliseconds, double renderMilliseconds);
void SetFramePacingStats(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount);
bool TrySetFramePacingStats(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount);
void SetAudioStatus(const AudioStatusSnapshot& status);
void AdvanceFrame();
bool TryAdvanceFrame();
bool BuildLayerFragmentShaderSource(const std::string& layerId, std::string& fragmentShaderSource, std::string& error);
std::vector<RuntimeRenderState> GetLayerRenderStates(unsigned outputWidth, unsigned outputHeight) const;
bool TryGetLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
void RefreshDynamicRenderStateFields(std::vector<RuntimeRenderState>& states) const;
std::string BuildStateJson() const;
const std::filesystem::path& GetRepoRoot() const { return mRepoRoot; }
@@ -64,6 +53,14 @@ public:
unsigned short GetOscPort() const { return mConfig.oscPort; }
unsigned GetMaxTemporalHistoryFrames() const { return mConfig.maxTemporalHistoryFrames; }
bool ExternalKeyingEnabled() const { return mConfig.enableExternalKeying; }
bool AudioEnabled() const { return mConfig.audioEnabled; }
bool AudioOutputEnabled() const { return mConfig.audioOutputEnabled; }
bool AudioScheduleEnabled() const { return mConfig.audioScheduleEnabled; }
bool AudioPrerollEnabled() const { return mConfig.audioPrerollEnabled; }
bool AudioScheduleSilence() const { return mConfig.audioScheduleSilence; }
bool AudioScheduleTone() const { return mConfig.audioScheduleTone; }
unsigned AudioChannelCount() const { return mConfig.audioChannelCount; }
unsigned AudioSampleRate() const { return mConfig.audioSampleRate; }
const std::string& GetInputVideoFormat() const { return mConfig.inputVideoFormat; }
const std::string& GetInputFrameRate() const { return mConfig.inputFrameRate; }
const std::string& GetOutputVideoFormat() const { return mConfig.outputVideoFormat; }
@@ -80,6 +77,15 @@ private:
bool autoReload = true;
unsigned maxTemporalHistoryFrames = 4;
bool enableExternalKeying = false;
bool audioEnabled = true;
bool audioOutputEnabled = true;
bool audioScheduleEnabled = true;
bool audioPrerollEnabled = true;
bool audioScheduleSilence = false;
bool audioScheduleTone = false;
unsigned audioChannelCount = kAudioChannelCount;
unsigned audioSampleRate = kAudioSampleRate;
std::string audioDelayMode = "matchVideoPreroll";
std::string inputVideoFormat = "1080p";
std::string inputFrameRate = "59.94";
std::string outputVideoFormat = "1080p";
@@ -88,7 +94,6 @@ private:
struct DeckLinkOutputStatus
{
std::string backendName = "decklink";
std::string modelName;
bool supportsInternalKeying = false;
bool supportsExternalKeying = false;
@@ -122,11 +127,9 @@ private:
std::string ReadTextFile(const std::filesystem::path& path, std::string& error) const;
bool WriteTextFile(const std::filesystem::path& path, const std::string& contents, std::string& error) const;
bool ResolvePaths(std::string& error);
void BuildLayerRenderStatesLocked(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
JsonValue BuildStateValue() const;
JsonValue SerializeLayerStackLocked() const;
bool DeserializeLayerStackLocked(const JsonValue& layersValue, std::vector<LayerPersistentState>& layers, std::string& error);
void NormalizePersistentLayerIdsLocked();
std::vector<std::string> GetStackPresetNamesLocked() const;
std::string MakeSafePresetFileStem(const std::string& presetName) const;
JsonValue SerializeParameterValue(const ShaderParameterDefinition& definition, const ShaderParameterValue& value) const;
@@ -134,10 +137,6 @@ private:
LayerPersistentState* FindLayerById(const std::string& layerId);
const LayerPersistentState* FindLayerById(const std::string& layerId) const;
std::string GenerateLayerId();
void SetSignalStatusLocked(bool hasSignal, unsigned width, unsigned height, const std::string& modeName);
void SetPerformanceStatsLocked(double frameBudgetMilliseconds, double renderMilliseconds);
void SetFramePacingStatsLocked(double completionIntervalMilliseconds, double smoothedCompletionIntervalMilliseconds,
double maxCompletionIntervalMilliseconds, uint64_t lateFrameCount, uint64_t droppedFrameCount, uint64_t flushedFrameCount);
private:
mutable std::mutex mMutex;
@@ -156,7 +155,6 @@ private:
std::filesystem::path mPatchedGlslPath;
std::map<std::string, ShaderPackage> mPackagesById;
std::vector<std::string> mPackageOrder;
std::vector<ShaderPackageStatus> mPackageStatuses;
bool mReloadRequested;
bool mCompileSucceeded;
std::string mCompileMessage;
@@ -167,18 +165,12 @@ private:
double mFrameBudgetMilliseconds;
double mRenderMilliseconds;
double mSmoothedRenderMilliseconds;
double mCompletionIntervalMilliseconds;
double mSmoothedCompletionIntervalMilliseconds;
double mMaxCompletionIntervalMilliseconds;
double mStartupRandom;
uint64_t mLateFrameCount;
uint64_t mDroppedFrameCount;
uint64_t mFlushedFrameCount;
DeckLinkOutputStatus mDeckLinkOutputStatus;
AudioStatusSnapshot mAudioStatus;
unsigned short mServerPort;
bool mAutoReloadEnabled;
std::chrono::steady_clock::time_point mStartTime;
std::chrono::steady_clock::time_point mLastScanTime;
std::atomic<uint64_t> mFrameCounter;
uint64_t mFrameCounter;
uint64_t mNextLayerId;
};

0
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeJson.cpp → apps/LoopThroughWithOpenGLCompositing/RuntimeJson.cpp
View File

0
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeJson.h → apps/LoopThroughWithOpenGLCompositing/RuntimeJson.h
View File

37
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeParameterUtils.cpp → apps/LoopThroughWithOpenGLCompositing/RuntimeParameterUtils.cpp
View File

@@ -36,21 +36,6 @@ std::vector<double> JsonArrayToNumbers(const JsonValue& value)
}
return numbers;
}
std::string NormalizeTextValue(const std::string& text, unsigned maxLength)
{
std::string normalized;
normalized.reserve(std::min<std::size_t>(text.size(), maxLength));
for (unsigned char ch : text)
{
if (ch < 32 || ch > 126)
continue;
if (normalized.size() >= maxLength)
break;
normalized.push_back(static_cast<char>(ch));
}
return normalized;
}
}
std::string MakeSafePresetFileStem(const std::string& presetName)
@@ -97,12 +82,6 @@ ShaderParameterValue DefaultValueForDefinition(const ShaderParameterDefinition&
case ShaderParameterType::Enum:
value.enumValue = definition.defaultEnumValue;
break;
case ShaderParameterType::Text:
value.textValue = NormalizeTextValue(definition.defaultTextValue, definition.maxLength);
break;
case ShaderParameterType::Trigger:
value.numberValues = { 0.0, -1000000.0 };
break;
}
return value;
}
@@ -185,22 +164,6 @@ bool NormalizeAndValidateParameterValue(const ShaderParameterDefinition& definit
error = "Enum parameter '" + definition.id + "' received unsupported option '" + selectedValue + "'.";
return false;
}
case ShaderParameterType::Text:
if (!value.isString())
{
error = "Expected string value for text parameter '" + definition.id + "'.";
return false;
}
normalizedValue.textValue = NormalizeTextValue(value.asString(), definition.maxLength);
return true;
case ShaderParameterType::Trigger:
if (!value.isNumber() && !value.isBoolean())
{
error = "Expected numeric or boolean value for trigger parameter '" + definition.id + "'.";
return false;
}
normalizedValue.numberValues = { value.isNumber() ? std::max(0.0, std::floor(value.asNumber())) : 0.0, -1000000.0 };
return true;
}
return false;

0
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeParameterUtils.h → apps/LoopThroughWithOpenGLCompositing/RuntimeParameterUtils.h
View File

71
apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.cpp → apps/LoopThroughWithOpenGLCompositing/ShaderCompiler.cpp
View File

@@ -4,7 +4,6 @@
#include "NativeHandles.h"
#include <fstream>
#include <cctype>
#include <regex>
#include <sstream>
#include <vector>
@@ -31,36 +30,15 @@ std::string SlangCBufferTypeForParameter(ShaderParameterType type)
case ShaderParameterType::Color: return "float4";
case ShaderParameterType::Boolean: return "bool";
case ShaderParameterType::Enum: return "int";
case ShaderParameterType::Text: return "";
case ShaderParameterType::Trigger: return "int";
}
return "float";
}
std::string CapitalizeIdentifier(const std::string& identifier)
{
if (identifier.empty())
return identifier;
std::string text = identifier;
text[0] = static_cast<char>(std::toupper(static_cast<unsigned char>(text[0])));
return text;
}
std::string BuildParameterUniforms(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type == ShaderParameterType::Text)
continue;
if (definition.type == ShaderParameterType::Trigger)
{
source << "\tint " << definition.id << ";\n";
source << "\tfloat " << definition.id << "Time;\n";
continue;
}
source << "\t" << SlangCBufferTypeForParameter(definition.type) << " " << definition.id << ";\n";
}
return source.str();
}
@@ -82,44 +60,6 @@ std::string BuildTextureSamplerDeclarations(const std::vector<ShaderTextureAsset
return source.str();
}
std::string BuildTextSamplerDeclarations(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type != ShaderParameterType::Text)
continue;
source << "Sampler2D<float4> " << definition.id << "Texture;\n";
}
if (source.tellp() > 0)
source << "\n";
return source.str();
}
std::string BuildTextHelpers(const std::vector<ShaderParameterDefinition>& parameters)
{
std::ostringstream source;
for (const ShaderParameterDefinition& definition : parameters)
{
if (definition.type != ShaderParameterType::Text)
continue;
const std::string suffix = CapitalizeIdentifier(definition.id);
source
<< "float sample" << suffix << "(float2 uv)\n"
<< "{\n"
<< "\tif (uv.x < 0.0 || uv.x > 1.0 || uv.y < 0.0 || uv.y > 1.0)\n"
<< "\t\treturn 0.0;\n"
<< "\treturn " << definition.id << "Texture.Sample(uv).r;\n"
<< "}\n\n"
<< "float4 draw" << suffix << "(float2 uv, float4 fillColor)\n"
<< "{\n"
<< "\tfloat alpha = sample" << suffix << "(uv) * fillColor.a;\n"
<< "\treturn float4(fillColor.rgb * alpha, alpha);\n"
<< "}\n\n";
}
return source.str();
}
std::string BuildHistorySwitchCases(const std::string& samplerPrefix, unsigned historyLength)
{
std::ostringstream source;
@@ -175,14 +115,11 @@ bool ShaderCompiler::BuildWrapperSlangSource(const ShaderPackage& shaderPackage,
return false;
wrapperSource = ReplaceAll(wrapperSource, "{{PARAMETER_UNIFORMS}}", BuildParameterUniforms(shaderPackage.parameters));
const unsigned historySamplerCount = shaderPackage.temporal.enabled ? mMaxTemporalHistoryFrames : 0;
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gSourceHistory", historySamplerCount));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gTemporalHistory", historySamplerCount));
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gSourceHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SAMPLERS}}", BuildHistorySamplerDeclarations("gTemporalHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXTURE_SAMPLERS}}", BuildTextureSamplerDeclarations(shaderPackage.textureAssets));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXT_SAMPLERS}}", BuildTextSamplerDeclarations(shaderPackage.parameters));
wrapperSource = ReplaceAll(wrapperSource, "{{TEXT_HELPERS}}", BuildTextHelpers(shaderPackage.parameters));
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gSourceHistory", historySamplerCount));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gTemporalHistory", historySamplerCount));
wrapperSource = ReplaceAll(wrapperSource, "{{SOURCE_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gSourceHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{TEMPORAL_HISTORY_SWITCH_CASES}}", BuildHistorySwitchCases("gTemporalHistory", mMaxTemporalHistoryFrames));
wrapperSource = ReplaceAll(wrapperSource, "{{USER_SHADER_INCLUDE}}", shaderPackage.shaderPath.generic_string());
wrapperSource = ReplaceAll(wrapperSource, "{{ENTRY_POINT_CALL}}", shaderPackage.entryPoint + "(context)");
return true;

0
apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.h → apps/LoopThroughWithOpenGLCompositing/ShaderCompiler.h
View File

141
apps/LoopThroughWithOpenGLCompositing/shader/ShaderPackageRegistry.cpp → apps/LoopThroughWithOpenGLCompositing/ShaderPackageRegistry.cpp
View File

@@ -67,16 +67,6 @@ bool ParseShaderParameterType(const std::string& typeName, ShaderParameterType&
type = ShaderParameterType::Enum;
return true;
}
if (typeName == "text")
{
type = ShaderParameterType::Text;
return true;
}
if (typeName == "trigger")
{
type = ShaderParameterType::Trigger;
return true;
}
return false;
}
@@ -293,49 +283,6 @@ bool ParseTextureAssets(const JsonValue& manifestJson, ShaderPackage& shaderPack
return true;
}
bool ParseFontAssets(const JsonValue& manifestJson, ShaderPackage& shaderPackage, const std::filesystem::path& manifestPath, std::string& error)
{
const JsonValue* fontsValue = nullptr;
if (!OptionalArrayField(manifestJson, "fonts", fontsValue, manifestPath, error))
return false;
if (!fontsValue)
return true;
for (const JsonValue& fontJson : fontsValue->asArray())
{
if (!fontJson.isObject())
{
error = "Shader font entry must be an object in: " + ManifestPathMessage(manifestPath);
return false;
}
std::string fontId;
std::string fontPath;
if (!RequireNonEmptyStringField(fontJson, "id", fontId, manifestPath, error) ||
!RequireNonEmptyStringField(fontJson, "path", fontPath, manifestPath, error))
{
error = "Shader font is missing required 'id' or 'path' in: " + ManifestPathMessage(manifestPath);
return false;
}
if (!ValidateShaderIdentifier(fontId, "fonts[].id", manifestPath, error))
return false;
ShaderFontAsset fontAsset;
fontAsset.id = fontId;
fontAsset.path = shaderPackage.directoryPath / fontPath;
if (!std::filesystem::exists(fontAsset.path))
{
error = "Shader font asset not found for package " + shaderPackage.id + ": " + fontAsset.path.string();
return false;
}
fontAsset.writeTime = std::filesystem::last_write_time(fontAsset.path);
shaderPackage.fontAssets.push_back(fontAsset);
}
return true;
}
bool ParseTemporalSettings(const JsonValue& manifestJson, ShaderPackage& shaderPackage, unsigned maxTemporalHistoryFrames, const std::filesystem::path& manifestPath, std::string& error)
{
const JsonValue* temporalValue = nullptr;
@@ -418,17 +365,6 @@ bool ParseParameterDefault(const JsonValue& parameterJson, ShaderParameterDefini
return true;
}
if (definition.type == ShaderParameterType::Text)
{
if (!defaultValue->isString())
{
error = "Text parameter default must be a string for: " + definition.id;
return false;
}
definition.defaultTextValue = defaultValue->asString();
return true;
}
return NumberListFromJsonValue(*defaultValue, definition.defaultNumbers, "default", manifestPath, error);
}
@@ -511,30 +447,6 @@ bool ParseParameterDefinition(const JsonValue& parameterJson, ShaderParameterDef
return false;
}
if (definition.type == ShaderParameterType::Text)
{
if (const JsonValue* fontValue = parameterJson.find("font"))
{
if (!fontValue->isString())
{
error = "Text parameter 'font' must be a string for: " + definition.id;
return false;
}
definition.fontId = fontValue->asString();
if (!definition.fontId.empty() && !ValidateShaderIdentifier(definition.fontId, "parameters[].font", manifestPath, error))
return false;
}
if (const JsonValue* maxLengthValue = parameterJson.find("maxLength"))
{
if (!maxLengthValue->isNumber() || maxLengthValue->asNumber() < 1.0 || maxLengthValue->asNumber() > 256.0)
{
error = "Text parameter 'maxLength' must be a number from 1 to 256 for: " + definition.id;
return false;
}
definition.maxLength = static_cast<unsigned>(maxLengthValue->asNumber());
}
}
if (definition.type == ShaderParameterType::Enum)
return ParseParameterOptions(parameterJson, definition, manifestPath, error);
@@ -559,36 +471,6 @@ bool ParseParameterDefinitions(const JsonValue& manifestJson, ShaderPackage& sha
return true;
}
std::string UniqueUnavailableShaderId(const std::filesystem::path& manifestPath, const std::string& parsedId)
{
const std::string fallbackId = manifestPath.parent_path().filename().string();
const std::string baseId = parsedId.empty() ? fallbackId : parsedId;
return baseId + "@invalid:" + fallbackId;
}
ShaderPackageStatus BuildUnavailableStatus(const std::filesystem::path& manifestPath, const ShaderPackage& partialPackage, const std::string& packageError)
{
ShaderPackageStatus status;
status.id = UniqueUnavailableShaderId(manifestPath, partialPackage.id);
status.displayName = !partialPackage.displayName.empty() ? partialPackage.displayName : manifestPath.parent_path().filename().string();
status.description = partialPackage.description;
status.category = !partialPackage.category.empty() ? partialPackage.category : "Unavailable";
status.available = false;
status.error = packageError;
return status;
}
ShaderPackageStatus BuildAvailableStatus(const ShaderPackage& shaderPackage)
{
ShaderPackageStatus status;
status.id = shaderPackage.id;
status.displayName = shaderPackage.displayName;
status.description = shaderPackage.description;
status.category = shaderPackage.category;
status.available = true;
return status;
}
}
ShaderPackageRegistry::ShaderPackageRegistry(unsigned maxTemporalHistoryFrames)
@@ -596,16 +478,10 @@ ShaderPackageRegistry::ShaderPackageRegistry(unsigned maxTemporalHistoryFrames)
{
}
bool ShaderPackageRegistry::Scan(
const std::filesystem::path& shaderRoot,
std::map<std::string, ShaderPackage>& packagesById,
std::vector<std::string>& packageOrder,
std::vector<ShaderPackageStatus>& packageStatuses,
std::string& error) const
bool ShaderPackageRegistry::Scan(const std::filesystem::path& shaderRoot, std::map<std::string, ShaderPackage>& packagesById, std::vector<std::string>& packageOrder, std::string& error) const
{
packagesById.clear();
packageOrder.clear();
packageStatuses.clear();
if (!std::filesystem::exists(shaderRoot))
{
@@ -624,27 +500,19 @@ bool ShaderPackageRegistry::Scan(
ShaderPackage shaderPackage;
if (!ParseManifest(manifestPath, shaderPackage, error))
{
packageStatuses.push_back(BuildUnavailableStatus(manifestPath, shaderPackage, error));
error.clear();
continue;
}
return false;
if (packagesById.find(shaderPackage.id) != packagesById.end())
{
packageStatuses.push_back(BuildUnavailableStatus(manifestPath, shaderPackage, "Duplicate shader id found: " + shaderPackage.id));
continue;
error = "Duplicate shader id found: " + shaderPackage.id;
return false;
}
packageOrder.push_back(shaderPackage.id);
packageStatuses.push_back(BuildAvailableStatus(shaderPackage));
packagesById[shaderPackage.id] = shaderPackage;
}
std::sort(packageOrder.begin(), packageOrder.end());
std::sort(packageStatuses.begin(), packageStatuses.end(), [](const ShaderPackageStatus& left, const ShaderPackageStatus& right) {
return left.displayName < right.displayName;
});
return true;
}
@@ -676,7 +544,6 @@ bool ShaderPackageRegistry::ParseManifest(const std::filesystem::path& manifestP
shaderPackage.manifestWriteTime = std::filesystem::last_write_time(shaderPackage.manifestPath);
return ParseTextureAssets(manifestJson, shaderPackage, manifestPath, error) &&
ParseFontAssets(manifestJson, shaderPackage, manifestPath, error) &&
ParseTemporalSettings(manifestJson, shaderPackage, mMaxTemporalHistoryFrames, manifestPath, error) &&
ParseParameterDefinitions(manifestJson, shaderPackage, manifestPath, error);
}

7
apps/LoopThroughWithOpenGLCompositing/shader/ShaderPackageRegistry.h → apps/LoopThroughWithOpenGLCompositing/ShaderPackageRegistry.h
View File

@@ -12,12 +12,7 @@ class ShaderPackageRegistry
public:
explicit ShaderPackageRegistry(unsigned maxTemporalHistoryFrames);
bool Scan(
const std::filesystem::path& shaderRoot,
std::map<std::string, ShaderPackage>& packagesById,
std::vector<std::string>& packageOrder,
std::vector<ShaderPackageStatus>& packageStatuses,
std::string& error) const;
bool Scan(const std::filesystem::path& shaderRoot, std::map<std::string, ShaderPackage>& packagesById, std::vector<std::string>& packageOrder, std::string& error) const;
bool ParseManifest(const std::filesystem::path& manifestPath, ShaderPackage& shaderPackage, std::string& error) const;
private:

33
apps/LoopThroughWithOpenGLCompositing/shader/ShaderTypes.h → apps/LoopThroughWithOpenGLCompositing/ShaderTypes.h
View File

@@ -5,15 +5,15 @@
#include <string>
#include <vector>
#include "AudioSupport.h"
enum class ShaderParameterType
{
Float,
Vec2,
Color,
Boolean,
Enum,
Text,
Trigger
Enum
};
struct ShaderParameterOption
@@ -33,9 +33,6 @@ struct ShaderParameterDefinition
std::vector<double> stepNumbers;
bool defaultBoolean = false;
std::string defaultEnumValue;
std::string defaultTextValue;
std::string fontId;
unsigned maxLength = 64;
std::vector<ShaderParameterOption> enumOptions;
};
@@ -44,7 +41,6 @@ struct ShaderParameterValue
std::vector<double> numberValues;
bool booleanValue = false;
std::string enumValue;
std::string textValue;
};
enum class TemporalHistorySource
@@ -69,13 +65,6 @@ struct ShaderTextureAsset
std::filesystem::file_time_type writeTime;
};
struct ShaderFontAsset
{
std::string id;
std::filesystem::path path;
std::filesystem::file_time_type writeTime;
};
struct ShaderPackage
{
std::string id;
@@ -88,22 +77,11 @@ struct ShaderPackage
std::filesystem::path manifestPath;
std::vector<ShaderParameterDefinition> parameters;
std::vector<ShaderTextureAsset> textureAssets;
std::vector<ShaderFontAsset> fontAssets;
TemporalSettings temporal;
std::filesystem::file_time_type shaderWriteTime;
std::filesystem::file_time_type manifestWriteTime;
};
struct ShaderPackageStatus
{
std::string id;
std::string displayName;
std::string description;
std::string category;
bool available = false;
std::string error;
};
struct RuntimeRenderState
{
std::string layerId;
@@ -111,11 +89,7 @@ struct RuntimeRenderState
std::vector<ShaderParameterDefinition> parameterDefinitions;
std::map<std::string, ShaderParameterValue> parameterValues;
std::vector<ShaderTextureAsset> textureAssets;
std::vector<ShaderFontAsset> fontAssets;
double timeSeconds = 0.0;
double utcTimeSeconds = 0.0;
double utcOffsetSeconds = 0.0;
double startupRandom = 0.0;
double frameCount = 0.0;
double mixAmount = 1.0;
double bypass = 0.0;
@@ -123,6 +97,7 @@ struct RuntimeRenderState
unsigned inputHeight = 0;
unsigned outputWidth = 0;
unsigned outputHeight = 0;
AudioAnalysisSnapshot audioAnalysis;
bool isTemporal = false;
TemporalHistorySource temporalHistorySource = TemporalHistorySource::None;
unsigned requestedTemporalHistoryLength = 0;

377
apps/LoopThroughWithOpenGLCompositing/VideoFrameTransfer.cpp Normal file
View File

@@ -0,0 +1,377 @@
/* -LICENSE-START-
** Copyright (c) 2012 Blackmagic Design
**
** Permission is hereby granted, free of charge, to any person or organization
** obtaining a copy of the software and accompanying documentation (the
** "Software") to use, reproduce, display, distribute, sub-license, execute,
** and transmit the Software, and to prepare derivative works of the Software,
** and to permit third-parties to whom the Software is furnished to do so, in
** accordance with:
**
** (1) if the Software is obtained from Blackmagic Design, the End User License
** Agreement for the Software Development Kit ("EULA") available at
** https://www.blackmagicdesign.com/EULA/DeckLinkSDK; or
**
** (2) if the Software is obtained from any third party, such licensing terms
** as notified by that third party,
**
** and all subject to the following:
**
** (3) the copyright notices in the Software and this entire statement,
** including the above license grant, this restriction and the following
** disclaimer, must be included in all copies of the Software, in whole or in
** part, and all derivative works of the Software, unless such copies or
** derivative works are solely in the form of machine-executable object code
** generated by a source language processor.
**
** (4) THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
** OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
**
** A copy of the Software is available free of charge at
** https://www.blackmagicdesign.com/desktopvideo_sdk under the EULA.
**
** -LICENSE-END-
*/
#include "VideoFrameTransfer.h"
#include "NativeHandles.h"
#define DVP_CHECK(cmd) { \
DVPStatus hr = (cmd); \
if (DVP_STATUS_OK != hr) { \
OutputDebugStringA( #cmd " failed\n" ); \
ExitProcess(hr); \
} \
}
// Initialise static members
bool VideoFrameTransfer::mInitialized = false;
bool VideoFrameTransfer::mUseDvp = false;
unsigned VideoFrameTransfer::mWidth = 0;
unsigned VideoFrameTransfer::mHeight = 0;
GLuint VideoFrameTransfer::mCaptureTexture = 0;
// NVIDIA specific static members
DVPBufferHandle VideoFrameTransfer::mDvpCaptureTextureHandle = 0;
DVPBufferHandle VideoFrameTransfer::mDvpPlaybackTextureHandle = 0;
uint32_t VideoFrameTransfer::mBufferAddrAlignment = 0;
uint32_t VideoFrameTransfer::mBufferGpuStrideAlignment = 0;
uint32_t VideoFrameTransfer::mSemaphoreAddrAlignment = 0;
uint32_t VideoFrameTransfer::mSemaphoreAllocSize = 0;
uint32_t VideoFrameTransfer::mSemaphorePayloadOffset = 0;
uint32_t VideoFrameTransfer::mSemaphorePayloadSize = 0;
bool VideoFrameTransfer::isNvidiaDvpAvailable()
{
// Look for supported graphics boards
const GLubyte* renderer = glGetString(GL_RENDERER);
if (renderer == NULL)
return false;
bool hasDvp = (strstr((char*)renderer, "Quadro") != NULL);
return hasDvp;
}
bool VideoFrameTransfer::isAMDPinnedMemoryAvailable()
{
// GL_AMD_pinned_memory presence indicates GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD buffer target is supported
const GLubyte* strExt = glGetString(GL_EXTENSIONS);
if (strExt == NULL)
{
// In a core profile context GL_EXTENSIONS is no longer queryable via glGetString().
// Treat this as "extension unavailable" for now; the fast-transfer path is optional.
return false;
}
bool hasAMDPinned = (strstr((char*)strExt, "GL_AMD_pinned_memory") != NULL);
return hasAMDPinned;
}
bool VideoFrameTransfer::checkFastMemoryTransferAvailable()
{
return (isNvidiaDvpAvailable() || isAMDPinnedMemoryAvailable());
}
bool VideoFrameTransfer::initialize(unsigned width, unsigned height, GLuint captureTexture, GLuint playbackTexture)
{
if (mInitialized)
return false;
bool hasDvp = isNvidiaDvpAvailable();
bool hasAMDPinned = isAMDPinnedMemoryAvailable();
if (!hasDvp && !hasAMDPinned)
return false;
mUseDvp = hasDvp;
mWidth = width;
mHeight = height;
mCaptureTexture = captureTexture;
if (! initializeMemoryLocking(mWidth * mHeight * 4)) // BGRA uses 4 bytes per pixel
return false;
if (mUseDvp)
{
// DVP initialisation
DVP_CHECK(dvpInitGLContext(DVP_DEVICE_FLAGS_SHARE_APP_CONTEXT));
DVP_CHECK(dvpGetRequiredConstantsGLCtx( &mBufferAddrAlignment, &mBufferGpuStrideAlignment,
&mSemaphoreAddrAlignment, &mSemaphoreAllocSize,
&mSemaphorePayloadOffset, &mSemaphorePayloadSize));
// Register textures with DVP
DVP_CHECK(dvpCreateGPUTextureGL(captureTexture, &mDvpCaptureTextureHandle));
DVP_CHECK(dvpCreateGPUTextureGL(playbackTexture, &mDvpPlaybackTextureHandle));
}
mInitialized = true;
return true;
}
bool VideoFrameTransfer::initializeMemoryLocking(unsigned memSize)
{
// Increase the process working set size to allow pinning of memory.
static SIZE_T dwMin = 0, dwMax = 0;
UniqueHandle processHandle(OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_SET_QUOTA, FALSE, GetCurrentProcessId()));
if (!processHandle.valid())
return false;
// Retrieve the working set size of the process.
if (!dwMin && !GetProcessWorkingSetSize(processHandle.get(), &dwMin, &dwMax))
return false;
// Allow for 80 frames to be locked
BOOL res = SetProcessWorkingSetSize(processHandle.get(), memSize * 80 + dwMin, memSize * 80 + (dwMax-dwMin));
if (!res)
return false;
return true;
}
// SyncInfo sets up a semaphore which is shared between the GPU and CPU and used to
// synchronise access to DVP buffers.
struct SyncInfo
{
SyncInfo(uint32_t semaphoreAllocSize, uint32_t semaphoreAddrAlignment);
~SyncInfo();
volatile uint32_t* mSem;
volatile uint32_t mReleaseValue;
volatile uint32_t mAcquireValue;
DVPSyncObjectHandle mDvpSync;
};
SyncInfo::SyncInfo(uint32_t semaphoreAllocSize, uint32_t semaphoreAddrAlignment)
{
mSem = (uint32_t*)_aligned_malloc(semaphoreAllocSize, semaphoreAddrAlignment);
// Initialise
mSem[0] = 0;
mReleaseValue = 0;
mAcquireValue = 0;
// Setup DVP sync object and import it
DVPSyncObjectDesc syncObjectDesc;
syncObjectDesc.externalClientWaitFunc = NULL;
syncObjectDesc.sem = (uint32_t*)mSem;
DVP_CHECK(dvpImportSyncObject(&syncObjectDesc, &mDvpSync));
}
SyncInfo::~SyncInfo()
{
DVP_CHECK(dvpFreeSyncObject(mDvpSync));
_aligned_free((void*)mSem);
}
VideoFrameTransfer::VideoFrameTransfer(unsigned long memSize, void* address, Direction direction) :
mBuffer(address),
mMemSize(memSize),
mDirection(direction),
mExtSync(NULL),
mGpuSync(NULL),
mDvpSysMemHandle(0),
mBufferHandle(0)
{
if (mUseDvp)
{
// Pin the memory
if (! VirtualLock(mBuffer, mMemSize))
throw std::runtime_error("Error pinning memory with VirtualLock");
// Create necessary sysmem and gpu sync objects
mExtSync = new SyncInfo(mSemaphoreAllocSize, mSemaphoreAddrAlignment);
mGpuSync = new SyncInfo(mSemaphoreAllocSize, mSemaphoreAddrAlignment);
// Register system memory buffers with DVP
DVPSysmemBufferDesc sysMemBuffersDesc;
sysMemBuffersDesc.width = mWidth;
sysMemBuffersDesc.height = mHeight;
sysMemBuffersDesc.stride = mWidth * 4;
sysMemBuffersDesc.format = DVP_BGRA;
sysMemBuffersDesc.type = DVP_UNSIGNED_BYTE;
sysMemBuffersDesc.size = mMemSize;
sysMemBuffersDesc.bufAddr = mBuffer;
if (mDirection == CPUtoGPU)
{
// A UYVY 4:2:2 frame is transferred to the GPU, rather than RGB 4:4:4, so width is halved
sysMemBuffersDesc.width /= 2;
sysMemBuffersDesc.stride /= 2;
}
DVP_CHECK(dvpCreateBuffer(&sysMemBuffersDesc, &mDvpSysMemHandle));
DVP_CHECK(dvpBindToGLCtx(mDvpSysMemHandle));
}
else
{
// Create an OpenGL buffer handle to use for pinned memory
GLuint bufferHandle;
glGenBuffers(1, &bufferHandle);
// Pin memory by binding buffer to special AMD target.
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, bufferHandle);
// glBufferData() sets up the address so any OpenGL operation on this buffer will use system memory directly
// (assumes address is aligned to 4k boundary).
glBufferData(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, mMemSize, address, GL_STREAM_DRAW);
GLenum result = glGetError();
if (result != GL_NO_ERROR)
{
throw std::runtime_error("Error pinning memory with glBufferData(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, ...)");
}
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, 0); // Unbind buffer to target
mBufferHandle = bufferHandle;
}
}
VideoFrameTransfer::~VideoFrameTransfer()
{
if (mUseDvp)
{
DVP_CHECK(dvpUnbindFromGLCtx(mDvpSysMemHandle));
DVP_CHECK(dvpDestroyBuffer(mDvpSysMemHandle));
delete mExtSync;
delete mGpuSync;
VirtualUnlock(mBuffer, mMemSize);
}
else
{
// The buffer is un-pinned by the GPU when the buffer is deleted
glDeleteBuffers(1, &mBufferHandle);
}
}
bool VideoFrameTransfer::performFrameTransfer()
{
if (mUseDvp)
{
// NVIDIA DVP transfers
DVPStatus status;
mGpuSync->mReleaseValue++;
dvpBegin();
if (mDirection == CPUtoGPU)
{
// Copy from system memory to GPU texture
dvpMapBufferWaitDVP(mDvpCaptureTextureHandle);
status = dvpMemcpyLined( mDvpSysMemHandle, mExtSync->mDvpSync, mExtSync->mAcquireValue, DVP_TIMEOUT_IGNORED,
mDvpCaptureTextureHandle, mGpuSync->mDvpSync, mGpuSync->mReleaseValue, 0, mHeight);
dvpMapBufferEndDVP(mDvpCaptureTextureHandle);
}
else
{
// Copy from GPU texture to system memory
dvpMapBufferWaitDVP(mDvpPlaybackTextureHandle);
status = dvpMemcpyLined( mDvpPlaybackTextureHandle, mExtSync->mDvpSync, mExtSync->mReleaseValue, DVP_TIMEOUT_IGNORED,
mDvpSysMemHandle, mGpuSync->mDvpSync, mGpuSync->mReleaseValue, 0, mHeight);
dvpMapBufferEndDVP(mDvpPlaybackTextureHandle);
}
dvpEnd();
return (status == DVP_STATUS_OK);
}
else
{
// AMD pinned memory transfers
if (mDirection == CPUtoGPU)
{
glEnable(GL_TEXTURE_2D);
// Use a pinned buffer for the GL_PIXEL_UNPACK_BUFFER target
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, mBufferHandle);
glBindTexture(GL_TEXTURE_2D, mCaptureTexture);
// NULL for last arg indicates use current GL_PIXEL_UNPACK_BUFFER target as texture data
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, mWidth/2, mHeight, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
// Ensure pinned texture has been transferred to GPU before we draw with it
GLsync fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
glClientWaitSync(fence, GL_SYNC_FLUSH_COMMANDS_BIT, 40 * 1000 * 1000); // timeout in nanosec
glDeleteSync(fence);
glBindTexture(GL_TEXTURE_2D, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDisable(GL_TEXTURE_2D);
}
else
{
// Use a PIXEL PACK BUFFER to read back pixels
glBindBuffer(GL_PIXEL_PACK_BUFFER, mBufferHandle);
glReadPixels(0, 0, mWidth, mHeight, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
// Ensure GPU has processed all commands in the pipeline up to this point, before memory is read by the CPU
GLsync fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
glClientWaitSync(fence, GL_SYNC_FLUSH_COMMANDS_BIT, 40 * 1000 * 1000); // timeout in nanosec
glDeleteSync(fence);
}
return (glGetError() == GL_NO_ERROR);
}
}
void VideoFrameTransfer::waitForTransferComplete()
{
if (!mUseDvp)
return;
// Block until buffer has completely transferred between GPU and CPU buffer
dvpBegin();
dvpSyncObjClientWaitComplete(mGpuSync->mDvpSync, DVP_TIMEOUT_IGNORED);
dvpEnd();
}
void VideoFrameTransfer::beginTextureInUse(Direction direction)
{
if (!mUseDvp)
return;
if (direction == CPUtoGPU)
dvpMapBufferWaitAPI(mDvpCaptureTextureHandle);
else
dvpMapBufferWaitAPI(mDvpPlaybackTextureHandle);
}
void VideoFrameTransfer::endTextureInUse(Direction direction)
{
if (!mUseDvp)
return;
if (direction == CPUtoGPU)
dvpMapBufferEndAPI(mDvpCaptureTextureHandle);
else
dvpMapBufferEndAPI(mDvpPlaybackTextureHandle);
}

109
apps/LoopThroughWithOpenGLCompositing/VideoFrameTransfer.h Normal file
View File

@@ -0,0 +1,109 @@
/* -LICENSE-START-
** Copyright (c) 2012 Blackmagic Design
**
** Permission is hereby granted, free of charge, to any person or organization
** obtaining a copy of the software and accompanying documentation (the
** "Software") to use, reproduce, display, distribute, sub-license, execute,
** and transmit the Software, and to prepare derivative works of the Software,
** and to permit third-parties to whom the Software is furnished to do so, in
** accordance with:
**
** (1) if the Software is obtained from Blackmagic Design, the End User License
** Agreement for the Software Development Kit ("EULA") available at
** https://www.blackmagicdesign.com/EULA/DeckLinkSDK; or
**
** (2) if the Software is obtained from any third party, such licensing terms
** as notified by that third party,
**
** and all subject to the following:
**
** (3) the copyright notices in the Software and this entire statement,
** including the above license grant, this restriction and the following
** disclaimer, must be included in all copies of the Software, in whole or in
** part, and all derivative works of the Software, unless such copies or
** derivative works are solely in the form of machine-executable object code
** generated by a source language processor.
**
** (4) THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
** OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
**
** A copy of the Software is available free of charge at
** https://www.blackmagicdesign.com/desktopvideo_sdk under the EULA.
**
** -LICENSE-END-
*/
#ifndef __VIDEO_FRAME_TRANSFER_H__
#define __VIDEO_FRAME_TRANSFER_H__
#include "GLExtensions.h"
#include <stdexcept>
#include <map>
// NVIDIA GPU Direct For Video with OpenGL requires the following two headers.
// See the NVIDIA website to check if your graphics card is supported.
#include <DVPAPI.h>
#include <dvpapi_gl.h>
struct SyncInfo;
// Class for performing efficient frame memory transfers between the CPU and GPU,
// using NVIDIA and AMD extensions.
class VideoFrameTransfer
{
public:
enum Direction
{
CPUtoGPU,
GPUtoCPU
};
VideoFrameTransfer(unsigned long memSize, void* address, Direction direction);
~VideoFrameTransfer();
static bool checkFastMemoryTransferAvailable();
static bool initialize(unsigned width, unsigned height, GLuint captureTexture, GLuint playbackTexture);
static void beginTextureInUse(Direction direction);
static void endTextureInUse(Direction direction);
bool performFrameTransfer();
void waitForTransferComplete();
private:
static bool isNvidiaDvpAvailable();
static bool isAMDPinnedMemoryAvailable();
static bool initializeMemoryLocking(unsigned memSize);
void* mBuffer;
unsigned long mMemSize;
Direction mDirection;
static bool mInitialized;
static bool mUseDvp;
static unsigned mWidth;
static unsigned mHeight;
static GLuint mCaptureTexture;
// NVIDIA GPU Direct for Video support
SyncInfo* mExtSync;
SyncInfo* mGpuSync;
DVPBufferHandle mDvpSysMemHandle;
static DVPBufferHandle mDvpCaptureTextureHandle;
static DVPBufferHandle mDvpPlaybackTextureHandle;
static uint32_t mBufferAddrAlignment;
static uint32_t mBufferGpuStrideAlignment;
static uint32_t mSemaphoreAddrAlignment;
static uint32_t mSemaphoreAllocSize;
static uint32_t mSemaphorePayloadOffset;
static uint32_t mSemaphorePayloadSize;
// GPU buffer bound to the target GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD for pinned memory
GLuint mBufferHandle;
};
#endif

51
apps/LoopThroughWithOpenGLCompositing/control/RuntimeControlBridge.cpp
View File

@@ -1,51 +0,0 @@
#include "RuntimeControlBridge.h"
#include "ControlServer.h"
#include "OpenGLComposite.h"
#include "OscServer.h"
#include "RuntimeHost.h"
bool StartRuntimeControlServices(
OpenGLComposite& composite,
RuntimeHost& runtimeHost,
ControlServer& controlServer,
OscServer& oscServer,
std::string& error)
{
ControlServer::Callbacks callbacks;
callbacks.getStateJson = [&composite]() { return composite.GetRuntimeStateJson(); };
callbacks.addLayer = [&composite](const std::string& shaderId, std::string& actionError) { return composite.AddLayer(shaderId, actionError); };
callbacks.removeLayer = [&composite](const std::string& layerId, std::string& actionError) { return composite.RemoveLayer(layerId, actionError); };
callbacks.moveLayer = [&composite](const std::string& layerId, int direction, std::string& actionError) { return composite.MoveLayer(layerId, direction, actionError); };
callbacks.moveLayerToIndex = [&composite](const std::string& layerId, std::size_t targetIndex, std::string& actionError) { return composite.MoveLayerToIndex(layerId, targetIndex, actionError); };
callbacks.setLayerBypass = [&composite](const std::string& layerId, bool bypassed, std::string& actionError) { return composite.SetLayerBypass(layerId, bypassed, actionError); };
callbacks.setLayerShader = [&composite](const std::string& layerId, const std::string& shaderId, std::string& actionError) { return composite.SetLayerShader(layerId, shaderId, actionError); };
callbacks.updateLayerParameter = [&composite](const std::string& layerId, const std::string& parameterId, const std::string& valueJson, std::string& actionError) {
return composite.UpdateLayerParameterJson(layerId, parameterId, valueJson, actionError);
};
callbacks.resetLayerParameters = [&composite](const std::string& layerId, std::string& actionError) { return composite.ResetLayerParameters(layerId, actionError); };
callbacks.saveStackPreset = [&composite](const std::string& presetName, std::string& actionError) { return composite.SaveStackPreset(presetName, actionError); };
callbacks.loadStackPreset = [&composite](const std::string& presetName, std::string& actionError) { return composite.LoadStackPreset(presetName, actionError); };
callbacks.requestScreenshot = [&composite](std::string& actionError) { return composite.RequestScreenshot(actionError); };
callbacks.reloadShader = [&composite](std::string& actionError) {
if (!composite.ReloadShader())
{
actionError = "Shader reload failed. See native app status for details.";
return false;
}
return true;
};
if (!controlServer.Start(runtimeHost.GetUiRoot(), runtimeHost.GetDocsRoot(), runtimeHost.GetServerPort(), callbacks, error))
return false;
runtimeHost.SetServerPort(controlServer.GetPort());
OscServer::Callbacks oscCallbacks;
oscCallbacks.updateParameter = [&composite](const std::string& layerKey, const std::string& parameterKey, const std::string& valueJson, std::string& actionError) {
return composite.UpdateLayerParameterByControlKeyJson(layerKey, parameterKey, valueJson, actionError);
};
if (runtimeHost.GetOscPort() > 0 && !oscServer.Start(runtimeHost.GetOscPort(), oscCallbacks, error))
return false;
return true;
}

15
apps/LoopThroughWithOpenGLCompositing/control/RuntimeControlBridge.h
View File

@@ -1,15 +0,0 @@
#pragma once
#include <string>
class ControlServer;
class OpenGLComposite;
class OscServer;
class RuntimeHost;
bool StartRuntimeControlServices(
OpenGLComposite& composite,
RuntimeHost& runtimeHost,
ControlServer& controlServer,
OscServer& oscServer,
std::string& error);

119
apps/LoopThroughWithOpenGLCompositing/control/RuntimeServices.cpp
View File

@@ -1,119 +0,0 @@
#include "RuntimeServices.h"
#include "ControlServer.h"
#include "OscServer.h"
#include "RuntimeControlBridge.h"
#include "RuntimeHost.h"
#include <windows.h>
RuntimeServices::RuntimeServices() :
mControlServer(std::make_unique<ControlServer>()),
mOscServer(std::make_unique<OscServer>()),
mPollRunning(false),
mRegistryChanged(false),
mReloadRequested(false),
mPollFailed(false)
{
}
RuntimeServices::~RuntimeServices()
{
Stop();
}
bool RuntimeServices::Start(OpenGLComposite& composite, RuntimeHost& runtimeHost, std::string& error)
{
Stop();
if (!StartRuntimeControlServices(composite, runtimeHost, *mControlServer, *mOscServer, error))
{
Stop();
return false;
}
return true;
}
void RuntimeServices::BeginPolling(RuntimeHost& runtimeHost)
{
StartPolling(runtimeHost);
}
void RuntimeServices::Stop()
{
StopPolling();
if (mOscServer)
mOscServer->Stop();
if (mControlServer)
mControlServer->Stop();
}
void RuntimeServices::BroadcastState()
{
if (mControlServer)
mControlServer->BroadcastState();
}
RuntimePollEvents RuntimeServices::ConsumePollEvents()
{
RuntimePollEvents events;
events.registryChanged = mRegistryChanged.exchange(false);
events.reloadRequested = mReloadRequested.exchange(false);
events.failed = mPollFailed.exchange(false);
if (events.failed)
{
std::lock_guard<std::mutex> lock(mPollErrorMutex);
events.error = mPollError;
}
return events;
}
void RuntimeServices::StartPolling(RuntimeHost& runtimeHost)
{
if (mPollRunning.exchange(true))
return;
mPollThread = std::thread([this, &runtimeHost]() { PollLoop(runtimeHost); });
}
void RuntimeServices::StopPolling()
{
if (!mPollRunning.exchange(false))
return;
if (mPollThread.joinable())
mPollThread.join();
}
void RuntimeServices::PollLoop(RuntimeHost& runtimeHost)
{
while (mPollRunning)
{
bool registryChanged = false;
bool reloadRequested = false;
std::string runtimeError;
if (!runtimeHost.PollFileChanges(registryChanged, reloadRequested, runtimeError))
{
{
std::lock_guard<std::mutex> lock(mPollErrorMutex);
mPollError = runtimeError;
}
mPollFailed = true;
}
else
{
if (registryChanged)
mRegistryChanged = true;
if (reloadRequested)
mReloadRequested = true;
}
for (int i = 0; i < 25 && mPollRunning; ++i)
Sleep(10);
}
}

48
apps/LoopThroughWithOpenGLCompositing/control/RuntimeServices.h
View File

@@ -1,48 +0,0 @@
#pragma once
#include <atomic>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
class ControlServer;
class OpenGLComposite;
class OscServer;
class RuntimeHost;
struct RuntimePollEvents
{
bool registryChanged = false;
bool reloadRequested = false;
bool failed = false;
std::string error;
};
class RuntimeServices
{
public:
RuntimeServices();
~RuntimeServices();
bool Start(OpenGLComposite& composite, RuntimeHost& runtimeHost, std::string& error);
void BeginPolling(RuntimeHost& runtimeHost);
void Stop();
void BroadcastState();
RuntimePollEvents ConsumePollEvents();
private:
void StartPolling(RuntimeHost& runtimeHost);
void StopPolling();
void PollLoop(RuntimeHost& runtimeHost);
std::unique_ptr<ControlServer> mControlServer;
std::unique_ptr<OscServer> mOscServer;
std::thread mPollThread;
std::atomic<bool> mPollRunning;
std::atomic<bool> mRegistryChanged;
std::atomic<bool> mReloadRequested;
std::atomic<bool> mPollFailed;
std::mutex mPollErrorMutex;
std::string mPollError;
};

479
apps/LoopThroughWithOpenGLCompositing/gl/OpenGLComposite.cpp
View File

@@ -1,479 +0,0 @@
#include "DeckLinkDisplayMode.h"
#include "DeckLinkSession.h"
#include "OpenGLComposite.h"
#include "GLExtensions.h"
#include "GlRenderConstants.h"
#include "OpenGLRenderPass.h"
#include "OpenGLRenderPipeline.h"
#include "OpenGLShaderPrograms.h"
#include "OpenGLVideoIOBridge.h"
#include "PngScreenshotWriter.h"
#include "RuntimeServices.h"
#include "ShaderBuildQueue.h"
#include <algorithm>
#include <chrono>
#include <ctime>
#include <filesystem>
#include <iomanip>
#include <memory>
#include <sstream>
#include <string>
#include <vector>
OpenGLComposite::OpenGLComposite(HWND hWnd, HDC hDC, HGLRC hRC) :
hGLWnd(hWnd), hGLDC(hDC), hGLRC(hRC),
mVideoIO(std::make_unique<DeckLinkSession>()),
mRenderer(std::make_unique<OpenGLRenderer>()),
mUseCommittedLayerStates(false),
mScreenshotRequested(false)
{
InitializeCriticalSection(&pMutex);
mRuntimeHost = std::make_unique<RuntimeHost>();
mRenderPipeline = std::make_unique<OpenGLRenderPipeline>(
*mRenderer,
*mRuntimeHost,
[this]() { renderEffect(); },
[this]() { ProcessScreenshotRequest(); },
[this]() { paintGL(); });
mVideoIOBridge = std::make_unique<OpenGLVideoIOBridge>(
*mVideoIO,
*mRenderer,
*mRenderPipeline,
*mRuntimeHost,
pMutex,
hGLDC,
hGLRC);
mRenderPass = std::make_unique<OpenGLRenderPass>(*mRenderer);
mShaderPrograms = std::make_unique<OpenGLShaderPrograms>(*mRenderer, *mRuntimeHost);
mShaderBuildQueue = std::make_unique<ShaderBuildQueue>(*mRuntimeHost);
mRuntimeServices = std::make_unique<RuntimeServices>();
}
OpenGLComposite::~OpenGLComposite()
{
if (mRuntimeServices)
mRuntimeServices->Stop();
if (mShaderBuildQueue)
mShaderBuildQueue->Stop();
mVideoIO->ReleaseResources();
mRenderer->DestroyResources();
DeleteCriticalSection(&pMutex);
}
bool OpenGLComposite::InitDeckLink()
{
return InitVideoIO();
}
bool OpenGLComposite::InitVideoIO()
{
VideoFormatSelection videoModes;
std::string initFailureReason;
if (mRuntimeHost && mRuntimeHost->GetRepoRoot().empty())
{
std::string runtimeError;
if (!mRuntimeHost->Initialize(runtimeError))
{
MessageBoxA(NULL, runtimeError.c_str(), "Runtime host failed to initialize", MB_OK);
return false;
}
}
if (mRuntimeHost)
{
if (!ResolveConfiguredVideoFormats(
mRuntimeHost->GetInputVideoFormat(),
mRuntimeHost->GetInputFrameRate(),
mRuntimeHost->GetOutputVideoFormat(),
mRuntimeHost->GetOutputFrameRate(),
videoModes,
initFailureReason))
{
MessageBoxA(NULL, initFailureReason.c_str(), "DeckLink mode configuration error", MB_OK);
return false;
}
}
if (!mVideoIO->DiscoverDevicesAndModes(videoModes, initFailureReason))
{
const char* title = initFailureReason == "Please install the Blackmagic DeckLink drivers to use the features of this application."
? "This application requires the DeckLink drivers installed."
: "DeckLink initialization failed";
MessageBoxA(NULL, initFailureReason.c_str(), title, MB_OK | MB_ICONERROR);
return false;
}
if (!mVideoIO->SelectPreferredFormats(videoModes, initFailureReason))
goto error;
if (! CheckOpenGLExtensions())
{
initFailureReason = "OpenGL extension checks failed.";
goto error;
}
if (! InitOpenGLState())
{
initFailureReason = "OpenGL state initialization failed.";
goto error;
}
PublishVideoIOStatus(mVideoIO->OutputModelName().empty()
? "DeckLink output device selected."
: ("Selected output device: " + mVideoIO->OutputModelName()));
// Resize window to match output video frame, but scale large formats down by half for viewing.
if (mVideoIO->OutputFrameWidth() < 1920)
resizeWindow(mVideoIO->OutputFrameWidth(), mVideoIO->OutputFrameHeight());
else
resizeWindow(mVideoIO->OutputFrameWidth() / 2, mVideoIO->OutputFrameHeight() / 2);
if (!mVideoIO->ConfigureInput([this](const VideoIOFrame& frame) { mVideoIOBridge->VideoFrameArrived(frame); }, videoModes.input, initFailureReason))
{
goto error;
}
if (!mVideoIO->HasInputDevice() && mRuntimeHost)
{
mRuntimeHost->SetSignalStatus(false, mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), mVideoIO->InputDisplayModeName());
}
if (!mVideoIO->ConfigureOutput([this](const VideoIOCompletion& completion) { mVideoIOBridge->PlayoutFrameCompleted(completion); }, videoModes.output, mRuntimeHost && mRuntimeHost->ExternalKeyingEnabled(), initFailureReason))
{
goto error;
}
PublishVideoIOStatus(mVideoIO->StatusMessage());
return true;
error:
if (!initFailureReason.empty())
MessageBoxA(NULL, initFailureReason.c_str(), "DeckLink initialization failed", MB_OK | MB_ICONERROR);
mVideoIO->ReleaseResources();
return false;
}
void OpenGLComposite::paintGL()
{
if (!TryEnterCriticalSection(&pMutex))
{
ValidateRect(hGLWnd, NULL);
return;
}
mRenderer->PresentToWindow(hGLDC, mVideoIO->OutputFrameWidth(), mVideoIO->OutputFrameHeight());
ValidateRect(hGLWnd, NULL);
LeaveCriticalSection(&pMutex);
}
void OpenGLComposite::resizeGL(WORD width, WORD height)
{
// We don't set the project or model matrices here since the window data is copied directly from
// an off-screen FBO in paintGL(). Just save the width and height for use in paintGL().
mRenderer->ResizeView(width, height);
}
void OpenGLComposite::resizeWindow(int width, int height)
{
RECT r;
if (GetWindowRect(hGLWnd, &r))
{
SetWindowPos(hGLWnd, HWND_TOP, r.left, r.top, r.left + width, r.top + height, 0);
}
}
void OpenGLComposite::PublishVideoIOStatus(const std::string& statusMessage)
{
if (!mRuntimeHost)
return;
if (!statusMessage.empty())
mVideoIO->SetStatusMessage(statusMessage);
mRuntimeHost->SetVideoIOStatus(
"decklink",
mVideoIO->OutputModelName(),
mVideoIO->SupportsInternalKeying(),
mVideoIO->SupportsExternalKeying(),
mVideoIO->KeyerInterfaceAvailable(),
mRuntimeHost->ExternalKeyingEnabled(),
mVideoIO->ExternalKeyingActive(),
mVideoIO->StatusMessage());
}
bool OpenGLComposite::InitOpenGLState()
{
if (! ResolveGLExtensions())
return false;
std::string runtimeError;
if (mRuntimeHost->GetRepoRoot().empty() && !mRuntimeHost->Initialize(runtimeError))
{
MessageBoxA(NULL, runtimeError.c_str(), "Runtime host failed to initialize", MB_OK);
return false;
}
if (!mRuntimeServices->Start(*this, *mRuntimeHost, runtimeError))
{
MessageBoxA(NULL, runtimeError.c_str(), "Runtime control services failed to start", MB_OK);
return false;
}
// Prepare the runtime shader program generated from the active shader package.
char compilerErrorMessage[1024];
if (!mShaderPrograms->CompileDecodeShader(sizeof(compilerErrorMessage), compilerErrorMessage))
{
MessageBoxA(NULL, compilerErrorMessage, "OpenGL decode shader failed to load or compile", MB_OK);
return false;
}
if (!mShaderPrograms->CompileOutputPackShader(sizeof(compilerErrorMessage), compilerErrorMessage))
{
MessageBoxA(NULL, compilerErrorMessage, "OpenGL output pack shader failed to load or compile", MB_OK);
return false;
}
if (!mShaderPrograms->CompileLayerPrograms(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
{
MessageBoxA(NULL, compilerErrorMessage, "OpenGL shader failed to load or compile", MB_OK);
return false;
}
mCachedLayerRenderStates = mShaderPrograms->CommittedLayerStates();
mUseCommittedLayerStates = false;
mShaderPrograms->ResetTemporalHistoryState();
std::string rendererError;
if (!mRenderer->InitializeResources(
mVideoIO->InputFrameWidth(),
mVideoIO->InputFrameHeight(),
mVideoIO->CaptureTextureWidth(),
mVideoIO->OutputFrameWidth(),
mVideoIO->OutputFrameHeight(),
mVideoIO->OutputPackTextureWidth(),
rendererError))
{
MessageBoxA(NULL, rendererError.c_str(), "OpenGL initialization error.", MB_OK);
return false;
}
broadcastRuntimeState();
mRuntimeServices->BeginPolling(*mRuntimeHost);
return true;
}
bool OpenGLComposite::Start()
{
return mVideoIO->Start();
}
bool OpenGLComposite::Stop()
{
if (mRuntimeServices)
mRuntimeServices->Stop();
const bool wasExternalKeyingActive = mVideoIO->ExternalKeyingActive();
mVideoIO->Stop();
if (wasExternalKeyingActive)
PublishVideoIOStatus("External keying has been disabled.");
return true;
}
bool OpenGLComposite::ReloadShader()
{
if (mRuntimeHost)
{
mRuntimeHost->SetCompileStatus(true, "Shader rebuild queued.");
mRuntimeHost->ClearReloadRequest();
}
RequestShaderBuild();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::RequestScreenshot(std::string& error)
{
(void)error;
mScreenshotRequested.store(true);
return true;
}
void OpenGLComposite::renderEffect()
{
ProcessRuntimePollResults();
const bool hasInputSource = mVideoIO->HasInputSource();
std::vector<RuntimeRenderState> layerStates;
if (mUseCommittedLayerStates)
{
layerStates = mShaderPrograms->CommittedLayerStates();
if (mRuntimeHost)
mRuntimeHost->RefreshDynamicRenderStateFields(layerStates);
}
else if (mRuntimeHost)
{
if (mRuntimeHost->TryGetLayerRenderStates(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), layerStates))
{
mCachedLayerRenderStates = layerStates;
}
else
{
layerStates = mCachedLayerRenderStates;
mRuntimeHost->RefreshDynamicRenderStateFields(layerStates);
}
}
const unsigned historyCap = mRuntimeHost ? mRuntimeHost->GetMaxTemporalHistoryFrames() : 0;
mRenderPass->Render(
hasInputSource,
layerStates,
mVideoIO->InputFrameWidth(),
mVideoIO->InputFrameHeight(),
mVideoIO->CaptureTextureWidth(),
mVideoIO->InputPixelFormat(),
historyCap,
[this](const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error) {
return mShaderPrograms->UpdateTextBindingTexture(state, textBinding, error);
},
[this](const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength) {
return mShaderPrograms->UpdateGlobalParamsBuffer(state, availableSourceHistoryLength, availableTemporalHistoryLength);
});
}
void OpenGLComposite::ProcessScreenshotRequest()
{
if (!mScreenshotRequested.exchange(false))
return;
const unsigned width = mVideoIO ? mVideoIO->OutputFrameWidth() : 0;
const unsigned height = mVideoIO ? mVideoIO->OutputFrameHeight() : 0;
if (width == 0 || height == 0)
return;
std::vector<unsigned char> bottomUpPixels(static_cast<std::size_t>(width) * height * 4);
std::vector<unsigned char> topDownPixels(bottomUpPixels.size());
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer->OutputFramebuffer());
glReadBuffer(GL_COLOR_ATTACHMENT0);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, bottomUpPixels.data());
glPixelStorei(GL_PACK_ALIGNMENT, 4);
const std::size_t rowBytes = static_cast<std::size_t>(width) * 4;
for (unsigned y = 0; y < height; ++y)
{
const unsigned sourceY = height - 1 - y;
std::copy(
bottomUpPixels.begin() + static_cast<std::ptrdiff_t>(sourceY * rowBytes),
bottomUpPixels.begin() + static_cast<std::ptrdiff_t>((sourceY + 1) * rowBytes),
topDownPixels.begin() + static_cast<std::ptrdiff_t>(y * rowBytes));
}
try
{
const std::filesystem::path outputPath = BuildScreenshotPath();
std::filesystem::create_directories(outputPath.parent_path());
WritePngFileAsync(outputPath, width, height, std::move(topDownPixels));
}
catch (const std::exception& exception)
{
OutputDebugStringA((std::string("Screenshot request failed: ") + exception.what() + "\n").c_str());
}
}
std::filesystem::path OpenGLComposite::BuildScreenshotPath() const
{
const std::filesystem::path root = mRuntimeHost && !mRuntimeHost->GetRuntimeRoot().empty()
? mRuntimeHost->GetRuntimeRoot()
: std::filesystem::current_path();
const auto now = std::chrono::system_clock::now();
const auto milliseconds = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()) % 1000;
const std::time_t nowTime = std::chrono::system_clock::to_time_t(now);
std::tm localTime = {};
localtime_s(&localTime, &nowTime);
std::ostringstream filename;
filename << "video-shader-toys-"
<< std::put_time(&localTime, "%Y%m%d-%H%M%S")
<< "-" << std::setw(3) << std::setfill('0') << milliseconds.count()
<< ".png";
return root / "screenshots" / filename.str();
}
bool OpenGLComposite::ProcessRuntimePollResults()
{
if (!mRuntimeHost || !mRuntimeServices)
return true;
const RuntimePollEvents events = mRuntimeServices->ConsumePollEvents();
if (events.failed)
{
mRuntimeHost->SetCompileStatus(false, events.error);
broadcastRuntimeState();
return false;
}
if (events.registryChanged)
broadcastRuntimeState();
if (!events.reloadRequested)
{
PreparedShaderBuild readyBuild;
if (!mShaderBuildQueue || !mShaderBuildQueue->TryConsumeReadyBuild(readyBuild))
return true;
char compilerErrorMessage[1024] = {};
if (!mShaderPrograms->CommitPreparedLayerPrograms(readyBuild, mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
{
mRuntimeHost->SetCompileStatus(false, compilerErrorMessage);
mUseCommittedLayerStates = true;
broadcastRuntimeState();
return false;
}
mUseCommittedLayerStates = false;
mCachedLayerRenderStates = mShaderPrograms->CommittedLayerStates();
mShaderPrograms->ResetTemporalHistoryState();
broadcastRuntimeState();
return true;
}
mRuntimeHost->SetCompileStatus(true, "Shader rebuild queued.");
RequestShaderBuild();
broadcastRuntimeState();
return true;
}
void OpenGLComposite::RequestShaderBuild()
{
if (!mShaderBuildQueue || !mVideoIO)
return;
mUseCommittedLayerStates = true;
if (mRuntimeHost)
mRuntimeHost->ClearReloadRequest();
mShaderBuildQueue->RequestBuild(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight());
}
void OpenGLComposite::broadcastRuntimeState()
{
if (mRuntimeServices)
mRuntimeServices->BroadcastState();
}
void OpenGLComposite::resetTemporalHistoryState()
{
mShaderPrograms->ResetTemporalHistoryState();
}
bool OpenGLComposite::CheckOpenGLExtensions()
{
return true;
}
////////////////////////////////////////////

103
apps/LoopThroughWithOpenGLCompositing/gl/OpenGLComposite.h
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@@ -1,103 +0,0 @@
#ifndef __OPENGL_COMPOSITE_H__
#define __OPENGL_COMPOSITE_H__
#include <windows.h>
#include <process.h>
#include <tchar.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <objbase.h>
#include <atlbase.h>
#include <comutil.h>
#include "GLExtensions.h"
#include "OpenGLRenderer.h"
#include "RuntimeHost.h"
#include <functional>
#include <atomic>
#include <filesystem>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include <deque>
class VideoIODevice;
class OpenGLVideoIOBridge;
class OpenGLRenderPass;
class OpenGLRenderPipeline;
class OpenGLShaderPrograms;
class RuntimeServices;
class ShaderBuildQueue;
class OpenGLComposite
{
public:
OpenGLComposite(HWND hWnd, HDC hDC, HGLRC hRC);
~OpenGLComposite();
bool InitDeckLink();
bool InitVideoIO();
bool Start();
bool Stop();
bool ReloadShader();
std::string GetRuntimeStateJson() const;
bool AddLayer(const std::string& shaderId, std::string& error);
bool RemoveLayer(const std::string& layerId, std::string& error);
bool MoveLayer(const std::string& layerId, int direction, std::string& error);
bool MoveLayerToIndex(const std::string& layerId, std::size_t targetIndex, std::string& error);
bool SetLayerBypass(const std::string& layerId, bool bypassed, std::string& error);
bool SetLayerShader(const std::string& layerId, const std::string& shaderId, std::string& error);
bool UpdateLayerParameterJson(const std::string& layerId, const std::string& parameterId, const std::string& valueJson, std::string& error);
bool UpdateLayerParameterByControlKeyJson(const std::string& layerKey, const std::string& parameterKey, const std::string& valueJson, std::string& error);
bool ResetLayerParameters(const std::string& layerId, std::string& error);
bool SaveStackPreset(const std::string& presetName, std::string& error);
bool LoadStackPreset(const std::string& presetName, std::string& error);
bool RequestScreenshot(std::string& error);
unsigned short GetControlServerPort() const;
unsigned short GetOscPort() const;
std::string GetControlUrl() const;
std::string GetDocsUrl() const;
std::string GetOscAddress() const;
void resizeGL(WORD width, WORD height);
void paintGL();
private:
void resizeWindow(int width, int height);
bool CheckOpenGLExtensions();
void PublishVideoIOStatus(const std::string& statusMessage);
using LayerProgram = OpenGLRenderer::LayerProgram;
HWND hGLWnd;
HDC hGLDC;
HGLRC hGLRC;
CRITICAL_SECTION pMutex;
std::unique_ptr<VideoIODevice> mVideoIO;
std::unique_ptr<OpenGLRenderer> mRenderer;
std::unique_ptr<RuntimeHost> mRuntimeHost;
std::unique_ptr<OpenGLVideoIOBridge> mVideoIOBridge;
std::unique_ptr<OpenGLRenderPass> mRenderPass;
std::unique_ptr<OpenGLRenderPipeline> mRenderPipeline;
std::unique_ptr<OpenGLShaderPrograms> mShaderPrograms;
std::unique_ptr<ShaderBuildQueue> mShaderBuildQueue;
std::unique_ptr<RuntimeServices> mRuntimeServices;
std::vector<RuntimeRenderState> mCachedLayerRenderStates;
std::atomic<bool> mUseCommittedLayerStates;
std::atomic<bool> mScreenshotRequested;
bool InitOpenGLState();
void renderEffect();
bool ProcessRuntimePollResults();
void RequestShaderBuild();
void ProcessScreenshotRequest();
std::filesystem::path BuildScreenshotPath() const;
void broadcastRuntimeState();
void resetTemporalHistoryState();
};
#endif // __OPENGL_COMPOSITE_H__

145
apps/LoopThroughWithOpenGLCompositing/gl/OpenGLCompositeRuntimeControls.cpp
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@@ -1,145 +0,0 @@
#include "OpenGLComposite.h"
std::string OpenGLComposite::GetRuntimeStateJson() const
{
return mRuntimeHost ? mRuntimeHost->BuildStateJson() : "{}";
}
unsigned short OpenGLComposite::GetControlServerPort() const
{
return mRuntimeHost ? mRuntimeHost->GetServerPort() : 0;
}
unsigned short OpenGLComposite::GetOscPort() const
{
return mRuntimeHost ? mRuntimeHost->GetOscPort() : 0;
}
std::string OpenGLComposite::GetControlUrl() const
{
return "http://127.0.0.1:" + std::to_string(GetControlServerPort()) + "/";
}
std::string OpenGLComposite::GetDocsUrl() const
{
return "http://127.0.0.1:" + std::to_string(GetControlServerPort()) + "/docs";
}
std::string OpenGLComposite::GetOscAddress() const
{
return "udp://127.0.0.1:" + std::to_string(GetOscPort()) + " /VideoShaderToys/{Layer}/{Parameter}";
}
bool OpenGLComposite::AddLayer(const std::string& shaderId, std::string& error)
{
if (!mRuntimeHost->AddLayer(shaderId, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::RemoveLayer(const std::string& layerId, std::string& error)
{
if (!mRuntimeHost->RemoveLayer(layerId, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::MoveLayer(const std::string& layerId, int direction, std::string& error)
{
if (!mRuntimeHost->MoveLayer(layerId, direction, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::MoveLayerToIndex(const std::string& layerId, std::size_t targetIndex, std::string& error)
{
if (!mRuntimeHost->MoveLayerToIndex(layerId, targetIndex, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::SetLayerBypass(const std::string& layerId, bool bypassed, std::string& error)
{
if (!mRuntimeHost->SetLayerBypass(layerId, bypassed, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::SetLayerShader(const std::string& layerId, const std::string& shaderId, std::string& error)
{
if (!mRuntimeHost->SetLayerShader(layerId, shaderId, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::UpdateLayerParameterJson(const std::string& layerId, const std::string& parameterId, const std::string& valueJson, std::string& error)
{
JsonValue parsedValue;
if (!ParseJson(valueJson, parsedValue, error))
return false;
if (!mRuntimeHost->UpdateLayerParameter(layerId, parameterId, parsedValue, error))
return false;
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::UpdateLayerParameterByControlKeyJson(const std::string& layerKey, const std::string& parameterKey, const std::string& valueJson, std::string& error)
{
JsonValue parsedValue;
if (!ParseJson(valueJson, parsedValue, error))
return false;
if (!mRuntimeHost->UpdateLayerParameterByControlKey(layerKey, parameterKey, parsedValue, error))
return false;
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::ResetLayerParameters(const std::string& layerId, std::string& error)
{
if (!mRuntimeHost->ResetLayerParameters(layerId, error))
return false;
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::SaveStackPreset(const std::string& presetName, std::string& error)
{
if (!mRuntimeHost->SaveStackPreset(presetName, error))
return false;
broadcastRuntimeState();
return true;
}
bool OpenGLComposite::LoadStackPreset(const std::string& presetName, std::string& error)
{
if (!mRuntimeHost->LoadStackPreset(presetName, error))
return false;
ReloadShader();
broadcastRuntimeState();
return true;
}

169
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLRenderPass.cpp
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@@ -1,169 +0,0 @@
#include "OpenGLRenderPass.h"
#include "GlRenderConstants.h"
OpenGLRenderPass::OpenGLRenderPass(OpenGLRenderer& renderer) :
mRenderer(renderer)
{
}
void OpenGLRenderPass::Render(
bool hasInputSource,
const std::vector<RuntimeRenderState>& layerStates,
unsigned inputFrameWidth,
unsigned inputFrameHeight,
unsigned captureTextureWidth,
VideoIOPixelFormat inputPixelFormat,
unsigned historyCap,
const TextBindingUpdater& updateTextBinding,
const GlobalParamsUpdater& updateGlobalParams)
{
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
if (hasInputSource)
{
RenderDecodePass(inputFrameWidth, inputFrameHeight, captureTextureWidth, inputPixelFormat);
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glViewport(0, 0, inputFrameWidth, inputFrameHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
std::vector<LayerProgram>& layerPrograms = mRenderer.LayerPrograms();
if (layerStates.empty() || layerPrograms.empty())
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
glBlitFramebuffer(0, 0, inputFrameWidth, inputFrameHeight, 0, 0, inputFrameWidth, inputFrameHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
}
else
{
GLuint sourceTexture = mRenderer.DecodedTexture();
GLuint sourceFrameBuffer = mRenderer.DecodeFramebuffer();
for (std::size_t index = 0; index < layerStates.size() && index < layerPrograms.size(); ++index)
{
const std::size_t remaining = layerStates.size() - index;
const bool writeToMain = (remaining % 2) == 1;
RenderShaderProgram(
sourceTexture,
writeToMain ? mRenderer.CompositeFramebuffer() : mRenderer.LayerTempFramebuffer(),
layerPrograms[index],
layerStates[index],
inputFrameWidth,
inputFrameHeight,
historyCap,
updateTextBinding,
updateGlobalParams);
if (layerStates[index].temporalHistorySource == TemporalHistorySource::PreLayerInput)
mRenderer.TemporalHistory().PushPreLayerFramebuffer(layerStates[index].layerId, sourceFrameBuffer, inputFrameWidth, inputFrameHeight);
sourceTexture = writeToMain ? mRenderer.CompositeTexture() : mRenderer.LayerTempTexture();
sourceFrameBuffer = writeToMain ? mRenderer.CompositeFramebuffer() : mRenderer.LayerTempFramebuffer();
}
}
mRenderer.TemporalHistory().PushSourceFramebuffer(mRenderer.DecodeFramebuffer(), inputFrameWidth, inputFrameHeight);
}
void OpenGLRenderPass::RenderDecodePass(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, VideoIOPixelFormat inputPixelFormat)
{
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glViewport(0, 0, inputFrameWidth, inputFrameHeight);
glClear(GL_COLOR_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0 + kPackedVideoTextureUnit);
glBindTexture(GL_TEXTURE_2D, mRenderer.CaptureTexture());
glBindVertexArray(mRenderer.FullscreenVertexArray());
glUseProgram(mRenderer.DecodeProgram());
const GLint packedResolutionLocation = glGetUniformLocation(mRenderer.DecodeProgram(), "uPackedVideoResolution");
const GLint decodedResolutionLocation = glGetUniformLocation(mRenderer.DecodeProgram(), "uDecodedVideoResolution");
const GLint inputPixelFormatLocation = glGetUniformLocation(mRenderer.DecodeProgram(), "uInputPixelFormat");
if (packedResolutionLocation >= 0)
glUniform2f(packedResolutionLocation, static_cast<float>(captureTextureWidth), static_cast<float>(inputFrameHeight));
if (decodedResolutionLocation >= 0)
glUniform2f(decodedResolutionLocation, static_cast<float>(inputFrameWidth), static_cast<float>(inputFrameHeight));
if (inputPixelFormatLocation >= 0)
glUniform1i(inputPixelFormatLocation, inputPixelFormat == VideoIOPixelFormat::V210 ? 1 : 0);
glDrawArrays(GL_TRIANGLES, 0, 3);
glUseProgram(0);
glBindVertexArray(0);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
}
void OpenGLRenderPass::RenderShaderProgram(
GLuint sourceTexture,
GLuint destinationFrameBuffer,
LayerProgram& layerProgram,
const RuntimeRenderState& state,
unsigned inputFrameWidth,
unsigned inputFrameHeight,
unsigned historyCap,
const TextBindingUpdater& updateTextBinding,
const GlobalParamsUpdater& updateGlobalParams)
{
for (LayerProgram::TextBinding& textBinding : layerProgram.textBindings)
{
std::string textError;
if (!updateTextBinding(state, textBinding, textError))
OutputDebugStringA((textError + "\n").c_str());
}
glBindFramebuffer(GL_FRAMEBUFFER, destinationFrameBuffer);
glViewport(0, 0, inputFrameWidth, inputFrameHeight);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0 + kDecodedVideoTextureUnit);
glBindTexture(GL_TEXTURE_2D, sourceTexture);
mRenderer.TemporalHistory().BindSamplers(state, sourceTexture, historyCap);
BindLayerTextureAssets(layerProgram);
glBindVertexArray(mRenderer.FullscreenVertexArray());
glUseProgram(layerProgram.program);
updateGlobalParams(state, mRenderer.TemporalHistory().SourceAvailableCount(), mRenderer.TemporalHistory().AvailableCountForLayer(state.layerId));
glDrawArrays(GL_TRIANGLES, 0, 3);
glUseProgram(0);
glBindVertexArray(0);
UnbindLayerTextureAssets(layerProgram, historyCap);
}
void OpenGLRenderPass::BindLayerTextureAssets(const LayerProgram& layerProgram)
{
const GLuint shaderTextureBase = layerProgram.shaderTextureBase != 0 ? layerProgram.shaderTextureBase : kSourceHistoryTextureUnitBase;
for (std::size_t index = 0; index < layerProgram.textureBindings.size(); ++index)
{
glActiveTexture(GL_TEXTURE0 + shaderTextureBase + static_cast<GLuint>(index));
glBindTexture(GL_TEXTURE_2D, layerProgram.textureBindings[index].texture);
}
const GLuint textTextureBase = shaderTextureBase + static_cast<GLuint>(layerProgram.textureBindings.size());
for (std::size_t index = 0; index < layerProgram.textBindings.size(); ++index)
{
glActiveTexture(GL_TEXTURE0 + textTextureBase + static_cast<GLuint>(index));
glBindTexture(GL_TEXTURE_2D, layerProgram.textBindings[index].texture);
}
glActiveTexture(GL_TEXTURE0);
}
void OpenGLRenderPass::UnbindLayerTextureAssets(const LayerProgram& layerProgram, unsigned historyCap)
{
for (unsigned index = 0; index < historyCap; ++index)
{
glActiveTexture(GL_TEXTURE0 + kSourceHistoryTextureUnitBase + index);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0 + kSourceHistoryTextureUnitBase + historyCap + index);
glBindTexture(GL_TEXTURE_2D, 0);
}
const GLuint shaderTextureBase = layerProgram.shaderTextureBase != 0 ? layerProgram.shaderTextureBase : kSourceHistoryTextureUnitBase;
for (std::size_t index = 0; index < layerProgram.textureBindings.size() + layerProgram.textBindings.size(); ++index)
{
glActiveTexture(GL_TEXTURE0 + shaderTextureBase + static_cast<GLuint>(index));
glBindTexture(GL_TEXTURE_2D, 0);
}
glActiveTexture(GL_TEXTURE0 + kDecodedVideoTextureUnit);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
}

47
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLRenderPass.h
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@@ -1,47 +0,0 @@
#pragma once
#include "OpenGLRenderer.h"
#include "ShaderTypes.h"
#include "VideoIOFormat.h"
#include <functional>
#include <string>
#include <vector>
class OpenGLRenderPass
{
public:
using LayerProgram = OpenGLRenderer::LayerProgram;
using TextBindingUpdater = std::function<bool(const RuntimeRenderState&, LayerProgram::TextBinding&, std::string&)>;
using GlobalParamsUpdater = std::function<bool(const RuntimeRenderState&, unsigned, unsigned)>;
explicit OpenGLRenderPass(OpenGLRenderer& renderer);
void Render(
bool hasInputSource,
const std::vector<RuntimeRenderState>& layerStates,
unsigned inputFrameWidth,
unsigned inputFrameHeight,
unsigned captureTextureWidth,
VideoIOPixelFormat inputPixelFormat,
unsigned historyCap,
const TextBindingUpdater& updateTextBinding,
const GlobalParamsUpdater& updateGlobalParams);
private:
void RenderDecodePass(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, VideoIOPixelFormat inputPixelFormat);
void RenderShaderProgram(
GLuint sourceTexture,
GLuint destinationFrameBuffer,
LayerProgram& layerProgram,
const RuntimeRenderState& state,
unsigned inputFrameWidth,
unsigned inputFrameHeight,
unsigned historyCap,
const TextBindingUpdater& updateTextBinding,
const GlobalParamsUpdater& updateGlobalParams);
void BindLayerTextureAssets(const LayerProgram& layerProgram);
void UnbindLayerTextureAssets(const LayerProgram& layerProgram, unsigned historyCap);
OpenGLRenderer& mRenderer;
};

92
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLRenderPipeline.cpp
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@@ -1,92 +0,0 @@
#include "OpenGLRenderPipeline.h"
#include "OpenGLRenderer.h"
#include "RuntimeHost.h"
#include "VideoIOFormat.h"
#include <chrono>
#include <gl/gl.h>
OpenGLRenderPipeline::OpenGLRenderPipeline(
OpenGLRenderer& renderer,
RuntimeHost& runtimeHost,
RenderEffectCallback renderEffect,
OutputReadyCallback outputReady,
PaintCallback paint) :
mRenderer(renderer),
mRuntimeHost(runtimeHost),
mRenderEffect(renderEffect),
mOutputReady(outputReady),
mPaint(paint)
{
}
bool OpenGLRenderPipeline::RenderFrame(const RenderPipelineFrameContext& context, VideoIOOutputFrame& outputFrame)
{
const VideoIOState& state = context.videoState;
const auto renderStartTime = std::chrono::steady_clock::now();
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
mRenderEffect();
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mRenderer.OutputFramebuffer());
glBlitFramebuffer(0, 0, state.inputFrameSize.width, state.inputFrameSize.height, 0, 0, state.outputFrameSize.width, state.outputFrameSize.height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.OutputFramebuffer());
if (mOutputReady)
mOutputReady();
if (state.outputPixelFormat == VideoIOPixelFormat::V210)
PackOutputForV210(state);
glFlush();
const auto renderEndTime = std::chrono::steady_clock::now();
const double renderMilliseconds = std::chrono::duration_cast<std::chrono::duration<double, std::milli>>(renderEndTime - renderStartTime).count();
mRuntimeHost.TrySetPerformanceStats(state.frameBudgetMilliseconds, renderMilliseconds);
mRuntimeHost.TryAdvanceFrame();
ReadOutputFrame(state, outputFrame);
if (mPaint)
mPaint();
return true;
}
void OpenGLRenderPipeline::PackOutputForV210(const VideoIOState& state)
{
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.OutputPackFramebuffer());
glViewport(0, 0, state.outputPackTextureWidth, state.outputFrameSize.height);
glDisable(GL_SCISSOR_TEST);
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, mRenderer.OutputTexture());
glBindVertexArray(mRenderer.FullscreenVertexArray());
glUseProgram(mRenderer.OutputPackProgram());
const GLint outputResolutionLocation = glGetUniformLocation(mRenderer.OutputPackProgram(), "uOutputVideoResolution");
const GLint activeWordsLocation = glGetUniformLocation(mRenderer.OutputPackProgram(), "uActiveV210Words");
if (outputResolutionLocation >= 0)
glUniform2f(outputResolutionLocation, static_cast<float>(state.outputFrameSize.width), static_cast<float>(state.outputFrameSize.height));
if (activeWordsLocation >= 0)
glUniform1f(activeWordsLocation, static_cast<float>(ActiveV210WordsForWidth(state.outputFrameSize.width)));
glDrawArrays(GL_TRIANGLES, 0, 3);
glUseProgram(0);
glBindVertexArray(0);
glBindTexture(GL_TEXTURE_2D, 0);
}
void OpenGLRenderPipeline::ReadOutputFrame(const VideoIOState& state, VideoIOOutputFrame& outputFrame)
{
glPixelStorei(GL_PACK_ALIGNMENT, 4);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
if (state.outputPixelFormat == VideoIOPixelFormat::V210)
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.OutputPackFramebuffer());
glReadPixels(0, 0, state.outputPackTextureWidth, state.outputFrameSize.height, GL_RGBA, GL_UNSIGNED_BYTE, outputFrame.bytes);
}
else
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.OutputFramebuffer());
glReadPixels(0, 0, state.outputFrameSize.width, state.outputFrameSize.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, outputFrame.bytes);
}
}

41
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLRenderPipeline.h
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@@ -1,41 +0,0 @@
#pragma once
#include "VideoIOTypes.h"
#include <functional>
class OpenGLRenderer;
class RuntimeHost;
struct RenderPipelineFrameContext
{
VideoIOState videoState;
VideoIOCompletion completion;
};
class OpenGLRenderPipeline
{
public:
using RenderEffectCallback = std::function<void()>;
using OutputReadyCallback = std::function<void()>;
using PaintCallback = std::function<void()>;
OpenGLRenderPipeline(
OpenGLRenderer& renderer,
RuntimeHost& runtimeHost,
RenderEffectCallback renderEffect,
OutputReadyCallback outputReady,
PaintCallback paint);
bool RenderFrame(const RenderPipelineFrameContext& context, VideoIOOutputFrame& outputFrame);
private:
void PackOutputForV210(const VideoIOState& state);
void ReadOutputFrame(const VideoIOState& state, VideoIOOutputFrame& outputFrame);
OpenGLRenderer& mRenderer;
RuntimeHost& mRuntimeHost;
RenderEffectCallback mRenderEffect;
OutputReadyCallback mOutputReady;
PaintCallback mPaint;
};

124
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLVideoIOBridge.cpp
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@@ -1,124 +0,0 @@
#include "OpenGLVideoIOBridge.h"
#include "OpenGLRenderer.h"
#include "RuntimeHost.h"
#include <chrono>
#include <gl/gl.h>
OpenGLVideoIOBridge::OpenGLVideoIOBridge(
VideoIODevice& videoIO,
OpenGLRenderer& renderer,
OpenGLRenderPipeline& renderPipeline,
RuntimeHost& runtimeHost,
CRITICAL_SECTION& mutex,
HDC hdc,
HGLRC hglrc) :
mVideoIO(videoIO),
mRenderer(renderer),
mRenderPipeline(renderPipeline),
mRuntimeHost(runtimeHost),
mMutex(mutex),
mHdc(hdc),
mHglrc(hglrc)
{
}
void OpenGLVideoIOBridge::RecordFramePacing(VideoIOCompletionResult completionResult)
{
const auto now = std::chrono::steady_clock::now();
if (mLastPlayoutCompletionTime != std::chrono::steady_clock::time_point())
{
mCompletionIntervalMilliseconds = std::chrono::duration_cast<std::chrono::duration<double, std::milli>>(now - mLastPlayoutCompletionTime).count();
if (mSmoothedCompletionIntervalMilliseconds <= 0.0)
mSmoothedCompletionIntervalMilliseconds = mCompletionIntervalMilliseconds;
else
mSmoothedCompletionIntervalMilliseconds = mSmoothedCompletionIntervalMilliseconds * 0.9 + mCompletionIntervalMilliseconds * 0.1;
if (mCompletionIntervalMilliseconds > mMaxCompletionIntervalMilliseconds)
mMaxCompletionIntervalMilliseconds = mCompletionIntervalMilliseconds;
}
mLastPlayoutCompletionTime = now;
if (completionResult == VideoIOCompletionResult::DisplayedLate)
++mLateFrameCount;
else if (completionResult == VideoIOCompletionResult::Dropped)
++mDroppedFrameCount;
else if (completionResult == VideoIOCompletionResult::Flushed)
++mFlushedFrameCount;
mRuntimeHost.TrySetFramePacingStats(
mCompletionIntervalMilliseconds,
mSmoothedCompletionIntervalMilliseconds,
mMaxCompletionIntervalMilliseconds,
mLateFrameCount,
mDroppedFrameCount,
mFlushedFrameCount);
}
void OpenGLVideoIOBridge::VideoFrameArrived(const VideoIOFrame& inputFrame)
{
const VideoIOState& state = mVideoIO.State();
mRuntimeHost.TrySetSignalStatus(!inputFrame.hasNoInputSource, state.inputFrameSize.width, state.inputFrameSize.height, state.inputDisplayModeName);
if (inputFrame.hasNoInputSource || inputFrame.bytes == nullptr)
return; // don't transfer texture when there's no input
const long textureSize = inputFrame.rowBytes * static_cast<long>(inputFrame.height);
EnterCriticalSection(&mMutex);
wglMakeCurrent(mHdc, mHglrc); // make OpenGL context current in this thread
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, mRenderer.TextureUploadBuffer());
glBufferData(GL_PIXEL_UNPACK_BUFFER, textureSize, inputFrame.bytes, GL_DYNAMIC_DRAW);
glBindTexture(GL_TEXTURE_2D, mRenderer.CaptureTexture());
// NULL for last arg indicates use current GL_PIXEL_UNPACK_BUFFER target as texture data.
if (inputFrame.pixelFormat == VideoIOPixelFormat::V210)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, state.captureTextureWidth, state.inputFrameSize.height, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
else
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, state.captureTextureWidth, state.inputFrameSize.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
wglMakeCurrent(NULL, NULL);
LeaveCriticalSection(&mMutex);
}
void OpenGLVideoIOBridge::PlayoutFrameCompleted(const VideoIOCompletion& completion)
{
RecordFramePacing(completion.result);
EnterCriticalSection(&mMutex);
VideoIOOutputFrame outputFrame;
if (!mVideoIO.BeginOutputFrame(outputFrame))
{
LeaveCriticalSection(&mMutex);
return;
}
const VideoIOState& state = mVideoIO.State();
RenderPipelineFrameContext frameContext;
frameContext.videoState = state;
frameContext.completion = completion;
// make GL context current in this thread
wglMakeCurrent(mHdc, mHglrc);
mRenderPipeline.RenderFrame(frameContext, outputFrame);
mVideoIO.EndOutputFrame(outputFrame);
mVideoIO.AccountForCompletionResult(completion.result);
// Schedule the next frame for playout
mVideoIO.ScheduleOutputFrame(outputFrame);
wglMakeCurrent(NULL, NULL);
LeaveCriticalSection(&mMutex);
}

44
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLVideoIOBridge.h
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@@ -1,44 +0,0 @@
#pragma once
#include "OpenGLRenderPipeline.h"
#include <windows.h>
#include <chrono>
#include <cstdint>
class RuntimeHost;
class OpenGLVideoIOBridge
{
public:
OpenGLVideoIOBridge(
VideoIODevice& videoIO,
OpenGLRenderer& renderer,
OpenGLRenderPipeline& renderPipeline,
RuntimeHost& runtimeHost,
CRITICAL_SECTION& mutex,
HDC hdc,
HGLRC hglrc);
void VideoFrameArrived(const VideoIOFrame& inputFrame);
void PlayoutFrameCompleted(const VideoIOCompletion& completion);
private:
void RecordFramePacing(VideoIOCompletionResult completionResult);
VideoIODevice& mVideoIO;
OpenGLRenderer& mRenderer;
OpenGLRenderPipeline& mRenderPipeline;
RuntimeHost& mRuntimeHost;
CRITICAL_SECTION& mMutex;
HDC mHdc;
HGLRC mHglrc;
std::chrono::steady_clock::time_point mLastPlayoutCompletionTime;
double mCompletionIntervalMilliseconds = 0.0;
double mSmoothedCompletionIntervalMilliseconds = 0.0;
double mMaxCompletionIntervalMilliseconds = 0.0;
uint64_t mLateFrameCount = 0;
uint64_t mDroppedFrameCount = 0;
uint64_t mFlushedFrameCount = 0;
};

137
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/PngScreenshotWriter.cpp
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@@ -1,137 +0,0 @@
#include "PngScreenshotWriter.h"
#include <windows.h>
#include <wincodec.h>
#include <atlbase.h>
#include <sstream>
#include <thread>
namespace
{
std::string HResultToString(HRESULT hr)
{
std::ostringstream stream;
stream << "HRESULT 0x" << std::hex << static_cast<unsigned long>(hr);
return stream.str();
}
bool WritePngFile(
const std::filesystem::path& outputPath,
unsigned width,
unsigned height,
const std::vector<unsigned char>& bgraPixels,
std::string& error)
{
if (width == 0 || height == 0 || bgraPixels.size() < static_cast<std::size_t>(width) * height * 4)
{
error = "Invalid screenshot dimensions or pixel buffer.";
return false;
}
HRESULT initializeResult = CoInitializeEx(nullptr, COINIT_MULTITHREADED);
const bool shouldUninitialize = SUCCEEDED(initializeResult);
if (FAILED(initializeResult) && initializeResult != RPC_E_CHANGED_MODE)
{
error = "CoInitializeEx failed: " + HResultToString(initializeResult);
return false;
}
CComPtr<IWICImagingFactory> factory;
HRESULT result = CoCreateInstance(
CLSID_WICImagingFactory,
nullptr,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&factory));
if (FAILED(result))
{
error = "Could not create WIC imaging factory: " + HResultToString(result);
if (shouldUninitialize)
CoUninitialize();
return false;
}
CComPtr<IWICStream> stream;
result = factory->CreateStream(&stream);
if (SUCCEEDED(result))
result = stream->InitializeFromFilename(outputPath.wstring().c_str(), GENERIC_WRITE);
if (FAILED(result))
{
error = "Could not open screenshot output file: " + HResultToString(result);
if (shouldUninitialize)
CoUninitialize();
return false;
}
CComPtr<IWICBitmapEncoder> encoder;
result = factory->CreateEncoder(GUID_ContainerFormatPng, nullptr, &encoder);
if (SUCCEEDED(result))
result = encoder->Initialize(stream, WICBitmapEncoderNoCache);
if (FAILED(result))
{
error = "Could not initialize PNG encoder: " + HResultToString(result);
if (shouldUninitialize)
CoUninitialize();
return false;
}
CComPtr<IWICBitmapFrameEncode> frame;
CComPtr<IPropertyBag2> propertyBag;
result = encoder->CreateNewFrame(&frame, &propertyBag);
if (SUCCEEDED(result))
result = frame->Initialize(propertyBag);
if (SUCCEEDED(result))
result = frame->SetSize(width, height);
WICPixelFormatGUID pixelFormat = GUID_WICPixelFormat32bppBGRA;
if (SUCCEEDED(result))
result = frame->SetPixelFormat(&pixelFormat);
if (SUCCEEDED(result) && pixelFormat != GUID_WICPixelFormat32bppBGRA)
{
error = "PNG encoder did not accept BGRA pixel format.";
result = E_FAIL;
}
const UINT stride = width * 4;
const UINT imageSize = stride * height;
if (SUCCEEDED(result))
result = frame->WritePixels(height, stride, imageSize, const_cast<BYTE*>(bgraPixels.data()));
if (SUCCEEDED(result))
result = frame->Commit();
if (SUCCEEDED(result))
result = encoder->Commit();
if (shouldUninitialize)
CoUninitialize();
if (FAILED(result))
{
error = "Could not write screenshot PNG: " + HResultToString(result);
std::error_code ignored;
std::filesystem::remove(outputPath, ignored);
return false;
}
return true;
}
}
void WritePngFileAsync(
const std::filesystem::path& outputPath,
unsigned width,
unsigned height,
std::vector<unsigned char> rgbaPixels)
{
std::thread(
[outputPath, width, height, pixels = std::move(rgbaPixels)]() mutable
{
for (std::size_t index = 0; index + 3 < pixels.size(); index += 4)
std::swap(pixels[index], pixels[index + 2]);
std::string error;
if (!WritePngFile(outputPath, width, height, pixels, error))
OutputDebugStringA(("Screenshot write failed: " + error + "\n").c_str());
else
OutputDebugStringA(("Screenshot written: " + outputPath.string() + "\n").c_str());
}).detach();
}

12
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/PngScreenshotWriter.h
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@@ -1,12 +0,0 @@
#pragma once
#include <filesystem>
#include <string>
#include <vector>
void WritePngFileAsync(
const std::filesystem::path& outputPath,
unsigned width,
unsigned height,
std::vector<unsigned char> rgbaPixels);

237
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/TemporalHistoryBuffers.cpp
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@@ -1,237 +0,0 @@
#include "TemporalHistoryBuffers.h"
#include "GlRenderConstants.h"
#include "ShaderTypes.h"
#include <algorithm>
#include <sstream>
#include <set>
bool TemporalHistoryBuffers::ValidateTextureUnitBudget(const std::vector<RuntimeRenderState>& layerStates, unsigned historyCap, std::string& error) const
{
unsigned requiredUnits = kSourceHistoryTextureUnitBase;
for (const RuntimeRenderState& state : layerStates)
{
unsigned textTextureCount = 0;
for (const ShaderParameterDefinition& definition : state.parameterDefinitions)
{
if (definition.type == ShaderParameterType::Text)
++textTextureCount;
}
const unsigned totalShaderTextures = static_cast<unsigned>(state.textureAssets.size()) + textTextureCount;
const unsigned layerRequiredUnits = kSourceHistoryTextureUnitBase + (state.isTemporal ? historyCap + historyCap : 0u) + totalShaderTextures;
if (layerRequiredUnits > requiredUnits)
requiredUnits = layerRequiredUnits;
}
GLint maxTextureUnits = 0;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
const unsigned availableUnits = maxTextureUnits > 0 ? static_cast<unsigned>(maxTextureUnits) : 0u;
if (requiredUnits > availableUnits)
{
std::ostringstream message;
message << "The current history and shader texture asset configuration requires " << requiredUnits
<< " fragment texture units, but only " << maxTextureUnits << " are available.";
error = message.str();
return false;
}
return true;
}
bool TemporalHistoryBuffers::EnsureResources(const std::vector<RuntimeRenderState>& layerStates, unsigned historyCap, unsigned frameWidth, unsigned frameHeight, std::string& error)
{
const bool sourceHistoryNeeded = std::any_of(layerStates.begin(), layerStates.end(),
[](const RuntimeRenderState& state) { return state.isTemporal && state.effectiveTemporalHistoryLength > 0; });
const unsigned sourceHistoryLength = sourceHistoryNeeded ? historyCap : 0;
if (sourceHistoryRing.effectiveLength != sourceHistoryLength)
{
if (!CreateRing(sourceHistoryRing, sourceHistoryLength, TemporalHistorySource::Source, frameWidth, frameHeight, error))
return false;
mNeedsReset = true;
}
std::set<std::string> requiredPreLayerIds;
for (const RuntimeRenderState& state : layerStates)
{
if (!state.isTemporal || state.temporalHistorySource != TemporalHistorySource::PreLayerInput)
continue;
requiredPreLayerIds.insert(state.layerId);
auto historyIt = preLayerHistoryByLayerId.find(state.layerId);
if (historyIt == preLayerHistoryByLayerId.end() || historyIt->second.effectiveLength != state.effectiveTemporalHistoryLength)
{
Ring replacement;
if (!CreateRing(replacement, state.effectiveTemporalHistoryLength, TemporalHistorySource::PreLayerInput, frameWidth, frameHeight, error))
return false;
preLayerHistoryByLayerId[state.layerId] = std::move(replacement);
mNeedsReset = true;
}
}
for (auto it = preLayerHistoryByLayerId.begin(); it != preLayerHistoryByLayerId.end();)
{
if (requiredPreLayerIds.find(it->first) == requiredPreLayerIds.end())
{
DestroyRing(it->second);
it = preLayerHistoryByLayerId.erase(it);
mNeedsReset = true;
}
else
{
++it;
}
}
if (mNeedsReset)
ResetState();
return true;
}
bool TemporalHistoryBuffers::CreateRing(Ring& ring, unsigned effectiveLength, TemporalHistorySource historySource, unsigned frameWidth, unsigned frameHeight, std::string& error)
{
DestroyRing(ring);
ring.effectiveLength = effectiveLength;
ring.historySource = historySource;
if (effectiveLength == 0)
return true;
ring.slots.resize(effectiveLength);
for (Slot& slot : ring.slots)
{
glGenTextures(1, &slot.texture);
glBindTexture(GL_TEXTURE_2D, slot.texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, frameWidth, frameHeight, 0, GL_RGBA, GL_FLOAT, NULL);
glGenFramebuffers(1, &slot.framebuffer);
glBindFramebuffer(GL_FRAMEBUFFER, slot.framebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, slot.texture, 0);
const GLenum framebufferStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (framebufferStatus != GL_FRAMEBUFFER_COMPLETE)
{
error = "Failed to initialize a temporal history framebuffer.";
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
DestroyRing(ring);
return false;
}
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
void TemporalHistoryBuffers::DestroyRing(Ring& ring)
{
for (Slot& slot : ring.slots)
{
if (slot.framebuffer != 0)
glDeleteFramebuffers(1, &slot.framebuffer);
if (slot.texture != 0)
glDeleteTextures(1, &slot.texture);
slot.framebuffer = 0;
slot.texture = 0;
}
ring.slots.clear();
ring.nextWriteIndex = 0;
ring.filledCount = 0;
ring.effectiveLength = 0;
ring.historySource = TemporalHistorySource::None;
}
void TemporalHistoryBuffers::DestroyResources()
{
DestroyRing(sourceHistoryRing);
for (auto& historyEntry : preLayerHistoryByLayerId)
DestroyRing(historyEntry.second);
preLayerHistoryByLayerId.clear();
mNeedsReset = true;
}
void TemporalHistoryBuffers::ResetState()
{
sourceHistoryRing.nextWriteIndex = 0;
sourceHistoryRing.filledCount = 0;
for (auto& historyEntry : preLayerHistoryByLayerId)
{
historyEntry.second.nextWriteIndex = 0;
historyEntry.second.filledCount = 0;
}
mNeedsReset = false;
}
void TemporalHistoryBuffers::PushFramebuffer(GLuint sourceFramebuffer, Ring& ring, unsigned frameWidth, unsigned frameHeight)
{
if (ring.effectiveLength == 0 || ring.slots.empty())
return;
Slot& targetSlot = ring.slots[ring.nextWriteIndex];
glBindFramebuffer(GL_READ_FRAMEBUFFER, sourceFramebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, targetSlot.framebuffer);
glBlitFramebuffer(0, 0, frameWidth, frameHeight, 0, 0, frameWidth, frameHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
ring.nextWriteIndex = (ring.nextWriteIndex + 1) % ring.slots.size();
ring.filledCount = std::min<std::size_t>(ring.filledCount + 1, ring.slots.size());
}
void TemporalHistoryBuffers::PushSourceFramebuffer(GLuint sourceFramebuffer, unsigned frameWidth, unsigned frameHeight)
{
PushFramebuffer(sourceFramebuffer, sourceHistoryRing, frameWidth, frameHeight);
}
void TemporalHistoryBuffers::PushPreLayerFramebuffer(const std::string& layerId, GLuint sourceFramebuffer, unsigned frameWidth, unsigned frameHeight)
{
auto historyIt = preLayerHistoryByLayerId.find(layerId);
if (historyIt != preLayerHistoryByLayerId.end())
PushFramebuffer(sourceFramebuffer, historyIt->second, frameWidth, frameHeight);
}
void TemporalHistoryBuffers::BindSamplers(const RuntimeRenderState& state, GLuint currentSourceTexture, unsigned historyCap)
{
for (unsigned index = 0; index < historyCap; ++index)
{
glActiveTexture(GL_TEXTURE0 + kSourceHistoryTextureUnitBase + index);
glBindTexture(GL_TEXTURE_2D, ResolveTexture(sourceHistoryRing, currentSourceTexture, index));
}
const GLuint temporalBase = kSourceHistoryTextureUnitBase + historyCap;
const Ring* temporalRing = nullptr;
auto it = preLayerHistoryByLayerId.find(state.layerId);
if (it != preLayerHistoryByLayerId.end())
temporalRing = &it->second;
for (unsigned index = 0; index < historyCap; ++index)
{
glActiveTexture(GL_TEXTURE0 + temporalBase + index);
glBindTexture(GL_TEXTURE_2D, temporalRing ? ResolveTexture(*temporalRing, currentSourceTexture, index) : currentSourceTexture);
}
glActiveTexture(GL_TEXTURE0);
}
GLuint TemporalHistoryBuffers::ResolveTexture(const Ring& ring, GLuint fallbackTexture, std::size_t framesAgo) const
{
if (ring.filledCount == 0 || ring.slots.empty())
return fallbackTexture;
const std::size_t clampedOffset = std::min<std::size_t>(framesAgo, ring.filledCount - 1);
const std::size_t newestIndex = (ring.nextWriteIndex + ring.slots.size() - 1) % ring.slots.size();
const std::size_t slotIndex = (newestIndex + ring.slots.size() - clampedOffset) % ring.slots.size();
return ring.slots[slotIndex].texture != 0 ? ring.slots[slotIndex].texture : fallbackTexture;
}
unsigned TemporalHistoryBuffers::SourceAvailableCount() const
{
return static_cast<unsigned>(sourceHistoryRing.filledCount);
}
unsigned TemporalHistoryBuffers::AvailableCountForLayer(const std::string& layerId) const
{
auto it = preLayerHistoryByLayerId.find(layerId);
if (it == preLayerHistoryByLayerId.end())
return 0;
return static_cast<unsigned>(it->second.filledCount);
}

51
apps/LoopThroughWithOpenGLCompositing/gl/pipeline/TemporalHistoryBuffers.h
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@@ -1,51 +0,0 @@
#pragma once
#include "GLExtensions.h"
#include "ShaderTypes.h"
#include <windows.h>
#include <gl/gl.h>
#include <map>
#include <string>
#include <vector>
struct RuntimeRenderState;
class TemporalHistoryBuffers
{
public:
struct Slot
{
GLuint texture = 0;
GLuint framebuffer = 0;
};
struct Ring
{
std::vector<Slot> slots;
std::size_t nextWriteIndex = 0;
std::size_t filledCount = 0;
unsigned effectiveLength = 0;
TemporalHistorySource historySource = TemporalHistorySource::None;
};
bool ValidateTextureUnitBudget(const std::vector<RuntimeRenderState>& layerStates, unsigned historyCap, std::string& error) const;
bool EnsureResources(const std::vector<RuntimeRenderState>& layerStates, unsigned historyCap, unsigned frameWidth, unsigned frameHeight, std::string& error);
bool CreateRing(Ring& ring, unsigned effectiveLength, TemporalHistorySource historySource, unsigned frameWidth, unsigned frameHeight, std::string& error);
void DestroyRing(Ring& ring);
void DestroyResources();
void ResetState();
void PushFramebuffer(GLuint sourceFramebuffer, Ring& ring, unsigned frameWidth, unsigned frameHeight);
void PushSourceFramebuffer(GLuint sourceFramebuffer, unsigned frameWidth, unsigned frameHeight);
void PushPreLayerFramebuffer(const std::string& layerId, GLuint sourceFramebuffer, unsigned frameWidth, unsigned frameHeight);
void BindSamplers(const RuntimeRenderState& state, GLuint currentSourceTexture, unsigned historyCap);
GLuint ResolveTexture(const Ring& ring, GLuint fallbackTexture, std::size_t framesAgo) const;
unsigned SourceAvailableCount() const;
unsigned AvailableCountForLayer(const std::string& layerId) const;
private:
Ring sourceHistoryRing;
std::map<std::string, Ring> preLayerHistoryByLayerId;
bool mNeedsReset = true;
};

9
apps/LoopThroughWithOpenGLCompositing/gl/renderer/GlRenderConstants.h
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@@ -1,9 +0,0 @@
#pragma once
#include <gl/gl.h>
constexpr GLuint kDecodedVideoTextureUnit = 1;
constexpr GLuint kSourceHistoryTextureUnitBase = 2;
constexpr GLuint kPackedVideoTextureUnit = 2;
constexpr GLuint kGlobalParamsBindingPoint = 0;
constexpr unsigned kPrerollFrameCount = 8;

57
apps/LoopThroughWithOpenGLCompositing/gl/renderer/GlScopedObjects.h
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@@ -1,57 +0,0 @@
#pragma once
#include <gl/gl.h>
class ScopedGlShader
{
public:
explicit ScopedGlShader(GLuint shader = 0) : mShader(shader) {}
~ScopedGlShader() { reset(); }
ScopedGlShader(const ScopedGlShader&) = delete;
ScopedGlShader& operator=(const ScopedGlShader&) = delete;
GLuint get() const { return mShader; }
GLuint release()
{
GLuint shader = mShader;
mShader = 0;
return shader;
}
void reset(GLuint shader = 0)
{
if (mShader != 0)
glDeleteShader(mShader);
mShader = shader;
}
private:
GLuint mShader;
};
class ScopedGlProgram
{
public:
explicit ScopedGlProgram(GLuint program = 0) : mProgram(program) {}
~ScopedGlProgram() { reset(); }
ScopedGlProgram(const ScopedGlProgram&) = delete;
ScopedGlProgram& operator=(const ScopedGlProgram&) = delete;
GLuint get() const { return mProgram; }
GLuint release()
{
GLuint program = mProgram;
mProgram = 0;
return program;
}
void reset(GLuint program = 0)
{
if (mProgram != 0)
glDeleteProgram(mProgram);
mProgram = program;
}
private:
GLuint mProgram;
};

330
apps/LoopThroughWithOpenGLCompositing/gl/renderer/OpenGLRenderer.cpp
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@@ -1,330 +0,0 @@
#include "OpenGLRenderer.h"
#include "GlRenderConstants.h"
namespace
{
void ConfigureByteFrameTexture(unsigned width, unsigned height)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
}
void ConfigureDisplayFrameTexture(unsigned width, unsigned height)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
}
}
bool OpenGLRenderer::InitializeResources(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, unsigned outputFrameWidth, unsigned outputFrameHeight, unsigned outputPackTextureWidth, std::string& error)
{
glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
glDisable(GL_DEPTH_TEST);
glGenBuffers(1, &mTextureUploadBuffer);
glGenTextures(1, &mCaptureTexture);
glBindTexture(GL_TEXTURE_2D, mCaptureTexture);
ConfigureByteFrameTexture(captureTextureWidth, inputFrameHeight);
glBindTexture(GL_TEXTURE_2D, 0);
glGenTextures(1, &mDecodedTexture);
glBindTexture(GL_TEXTURE_2D, mDecodedTexture);
ConfigureDisplayFrameTexture(inputFrameWidth, inputFrameHeight);
glBindTexture(GL_TEXTURE_2D, 0);
glGenTextures(1, &mLayerTempTexture);
glBindTexture(GL_TEXTURE_2D, mLayerTempTexture);
ConfigureDisplayFrameTexture(inputFrameWidth, inputFrameHeight);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &mDecodeFrameBuf);
glGenFramebuffers(1, &mLayerTempFrameBuf);
glGenFramebuffers(1, &mIdFrameBuf);
glGenFramebuffers(1, &mOutputFrameBuf);
glGenFramebuffers(1, &mOutputPackFrameBuf);
glGenRenderbuffers(1, &mIdColorBuf);
glGenRenderbuffers(1, &mIdDepthBuf);
glGenVertexArrays(1, &mFullscreenVAO);
glGenBuffers(1, &mGlobalParamsUBO);
glBindFramebuffer(GL_FRAMEBUFFER, mDecodeFrameBuf);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mDecodedTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
error = "Cannot initialize decode framebuffer.";
return false;
}
glBindFramebuffer(GL_FRAMEBUFFER, mLayerTempFrameBuf);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mLayerTempTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
error = "Cannot initialize layer framebuffer.";
return false;
}
glBindFramebuffer(GL_FRAMEBUFFER, mIdFrameBuf);
glGenTextures(1, &mFBOTexture);
glBindTexture(GL_TEXTURE_2D, mFBOTexture);
ConfigureDisplayFrameTexture(inputFrameWidth, inputFrameHeight);
glBindRenderbuffer(GL_RENDERBUFFER, mIdDepthBuf);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, inputFrameWidth, inputFrameHeight);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER, mIdDepthBuf);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mFBOTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
error = "Cannot initialize framebuffer.";
return false;
}
glGenTextures(1, &mOutputTexture);
glBindTexture(GL_TEXTURE_2D, mOutputTexture);
ConfigureDisplayFrameTexture(outputFrameWidth, outputFrameHeight);
glBindFramebuffer(GL_FRAMEBUFFER, mOutputFrameBuf);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mOutputTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
error = "Cannot initialize output framebuffer.";
return false;
}
glGenTextures(1, &mOutputPackTexture);
glBindTexture(GL_TEXTURE_2D, mOutputPackTexture);
ConfigureByteFrameTexture(outputPackTextureWidth, outputFrameHeight);
glBindFramebuffer(GL_FRAMEBUFFER, mOutputPackFrameBuf);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mOutputPackTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
error = "Cannot initialize output pack framebuffer.";
return false;
}
glBindTexture(GL_TEXTURE_2D, 0);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindVertexArray(mFullscreenVAO);
glBindVertexArray(0);
glBindBuffer(GL_UNIFORM_BUFFER, mGlobalParamsUBO);
glBufferData(GL_UNIFORM_BUFFER, 1024, NULL, GL_DYNAMIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, kGlobalParamsBindingPoint, mGlobalParamsUBO);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}
void OpenGLRenderer::SetDecodeShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader)
{
mDecodeProgram = program;
mDecodeVertexShader = vertexShader;
mDecodeFragmentShader = fragmentShader;
}
void OpenGLRenderer::SetOutputPackShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader)
{
mOutputPackProgram = program;
mOutputPackVertexShader = vertexShader;
mOutputPackFragmentShader = fragmentShader;
}
void OpenGLRenderer::ResizeView(int width, int height)
{
mViewWidth = width;
mViewHeight = height;
}
void OpenGLRenderer::PresentToWindow(HDC hdc, unsigned outputFrameWidth, unsigned outputFrameHeight)
{
int destWidth = mViewWidth;
int destHeight = mViewHeight;
int destX = 0;
int destY = 0;
if (outputFrameWidth > 0 && outputFrameHeight > 0 && mViewWidth > 0 && mViewHeight > 0)
{
const double frameAspect = static_cast<double>(outputFrameWidth) / static_cast<double>(outputFrameHeight);
const double viewAspect = static_cast<double>(mViewWidth) / static_cast<double>(mViewHeight);
if (viewAspect > frameAspect)
{
destHeight = mViewHeight;
destWidth = static_cast<int>(destHeight * frameAspect + 0.5);
destX = (mViewWidth - destWidth) / 2;
}
else
{
destWidth = mViewWidth;
destHeight = static_cast<int>(destWidth / frameAspect + 0.5);
destY = (mViewHeight - destHeight) / 2;
}
}
glBindFramebuffer(GL_READ_FRAMEBUFFER, mOutputFrameBuf);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glDisable(GL_SCISSOR_TEST);
glViewport(0, 0, mViewWidth, mViewHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glBlitFramebuffer(0, 0, outputFrameWidth, outputFrameHeight, destX, destY, destX + destWidth, destY + destHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
SwapBuffers(hdc);
}
void OpenGLRenderer::DestroyResources()
{
if (mFullscreenVAO != 0)
glDeleteVertexArrays(1, &mFullscreenVAO);
if (mGlobalParamsUBO != 0)
glDeleteBuffers(1, &mGlobalParamsUBO);
if (mDecodeFrameBuf != 0)
glDeleteFramebuffers(1, &mDecodeFrameBuf);
if (mLayerTempFrameBuf != 0)
glDeleteFramebuffers(1, &mLayerTempFrameBuf);
if (mIdFrameBuf != 0)
glDeleteFramebuffers(1, &mIdFrameBuf);
if (mOutputFrameBuf != 0)
glDeleteFramebuffers(1, &mOutputFrameBuf);
if (mOutputPackFrameBuf != 0)
glDeleteFramebuffers(1, &mOutputPackFrameBuf);
if (mIdColorBuf != 0)
glDeleteRenderbuffers(1, &mIdColorBuf);
if (mIdDepthBuf != 0)
glDeleteRenderbuffers(1, &mIdDepthBuf);
if (mCaptureTexture != 0)
glDeleteTextures(1, &mCaptureTexture);
if (mDecodedTexture != 0)
glDeleteTextures(1, &mDecodedTexture);
if (mLayerTempTexture != 0)
glDeleteTextures(1, &mLayerTempTexture);
if (mFBOTexture != 0)
glDeleteTextures(1, &mFBOTexture);
if (mOutputTexture != 0)
glDeleteTextures(1, &mOutputTexture);
if (mOutputPackTexture != 0)
glDeleteTextures(1, &mOutputPackTexture);
if (mTextureUploadBuffer != 0)
glDeleteBuffers(1, &mTextureUploadBuffer);
mFullscreenVAO = 0;
mGlobalParamsUBO = 0;
mDecodeFrameBuf = 0;
mLayerTempFrameBuf = 0;
mIdFrameBuf = 0;
mOutputFrameBuf = 0;
mOutputPackFrameBuf = 0;
mIdColorBuf = 0;
mIdDepthBuf = 0;
mCaptureTexture = 0;
mDecodedTexture = 0;
mLayerTempTexture = 0;
mFBOTexture = 0;
mOutputTexture = 0;
mOutputPackTexture = 0;
mTextureUploadBuffer = 0;
mGlobalParamsUBOSize = 0;
mTemporalHistory.DestroyResources();
DestroyLayerPrograms();
DestroyDecodeShaderProgram();
DestroyOutputPackShaderProgram();
}
void OpenGLRenderer::DestroySingleLayerProgram(LayerProgram& layerProgram)
{
for (LayerProgram::TextureBinding& binding : layerProgram.textureBindings)
{
if (binding.texture != 0)
{
glDeleteTextures(1, &binding.texture);
binding.texture = 0;
}
}
layerProgram.textureBindings.clear();
for (LayerProgram::TextBinding& binding : layerProgram.textBindings)
{
if (binding.texture != 0)
{
glDeleteTextures(1, &binding.texture);
binding.texture = 0;
}
}
layerProgram.textBindings.clear();
if (layerProgram.program != 0)
{
glDeleteProgram(layerProgram.program);
layerProgram.program = 0;
}
if (layerProgram.fragmentShader != 0)
{
glDeleteShader(layerProgram.fragmentShader);
layerProgram.fragmentShader = 0;
}
if (layerProgram.vertexShader != 0)
{
glDeleteShader(layerProgram.vertexShader);
layerProgram.vertexShader = 0;
}
}
void OpenGLRenderer::DestroyLayerPrograms()
{
for (LayerProgram& layerProgram : mLayerPrograms)
DestroySingleLayerProgram(layerProgram);
mLayerPrograms.clear();
}
void OpenGLRenderer::DestroyDecodeShaderProgram()
{
if (mDecodeProgram != 0)
{
glDeleteProgram(mDecodeProgram);
mDecodeProgram = 0;
}
if (mDecodeFragmentShader != 0)
{
glDeleteShader(mDecodeFragmentShader);
mDecodeFragmentShader = 0;
}
if (mDecodeVertexShader != 0)
{
glDeleteShader(mDecodeVertexShader);
mDecodeVertexShader = 0;
}
}
void OpenGLRenderer::DestroyOutputPackShaderProgram()
{
if (mOutputPackProgram != 0)
{
glDeleteProgram(mOutputPackProgram);
mOutputPackProgram = 0;
}
if (mOutputPackFragmentShader != 0)
{
glDeleteShader(mOutputPackFragmentShader);
mOutputPackFragmentShader = 0;
}
if (mOutputPackVertexShader != 0)
{
glDeleteShader(mOutputPackVertexShader);
mOutputPackVertexShader = 0;
}
}

109
apps/LoopThroughWithOpenGLCompositing/gl/renderer/OpenGLRenderer.h
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@@ -1,109 +0,0 @@
#pragma once
#include "GLExtensions.h"
#include "ShaderTypes.h"
#include "TemporalHistoryBuffers.h"
#include <windows.h>
#include <filesystem>
#include <gl/gl.h>
#include <string>
#include <vector>
class OpenGLRenderer
{
public:
struct LayerProgram
{
struct TextureBinding
{
std::string samplerName;
std::filesystem::path sourcePath;
GLuint texture = 0;
};
struct TextBinding
{
std::string parameterId;
std::string samplerName;
std::string fontId;
GLuint texture = 0;
std::string renderedText;
unsigned renderedWidth = 0;
unsigned renderedHeight = 0;
};
std::string layerId;
std::string shaderId;
GLuint shaderTextureBase = 0;
GLuint program = 0;
GLuint vertexShader = 0;
GLuint fragmentShader = 0;
std::vector<TextureBinding> textureBindings;
std::vector<TextBinding> textBindings;
};
GLuint CaptureTexture() const { return mCaptureTexture; }
GLuint DecodedTexture() const { return mDecodedTexture; }
GLuint LayerTempTexture() const { return mLayerTempTexture; }
GLuint CompositeTexture() const { return mFBOTexture; }
GLuint OutputTexture() const { return mOutputTexture; }
GLuint OutputPackTexture() const { return mOutputPackTexture; }
GLuint TextureUploadBuffer() const { return mTextureUploadBuffer; }
GLuint DecodeFramebuffer() const { return mDecodeFrameBuf; }
GLuint LayerTempFramebuffer() const { return mLayerTempFrameBuf; }
GLuint CompositeFramebuffer() const { return mIdFrameBuf; }
GLuint OutputFramebuffer() const { return mOutputFrameBuf; }
GLuint OutputPackFramebuffer() const { return mOutputPackFrameBuf; }
GLuint FullscreenVertexArray() const { return mFullscreenVAO; }
GLuint GlobalParamsUBO() const { return mGlobalParamsUBO; }
GLuint DecodeProgram() const { return mDecodeProgram; }
GLuint OutputPackProgram() const { return mOutputPackProgram; }
GLsizeiptr GlobalParamsUBOSize() const { return mGlobalParamsUBOSize; }
void SetGlobalParamsUBOSize(GLsizeiptr size) { mGlobalParamsUBOSize = size; }
void ReplaceLayerPrograms(std::vector<LayerProgram>& newPrograms) { mLayerPrograms.swap(newPrograms); }
std::vector<LayerProgram>& LayerPrograms() { return mLayerPrograms; }
const std::vector<LayerProgram>& LayerPrograms() const { return mLayerPrograms; }
TemporalHistoryBuffers& TemporalHistory() { return mTemporalHistory; }
const TemporalHistoryBuffers& TemporalHistory() const { return mTemporalHistory; }
void SetDecodeShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader);
void SetOutputPackShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader);
bool InitializeResources(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, unsigned outputFrameWidth, unsigned outputFrameHeight, unsigned outputPackTextureWidth, std::string& error);
void ResizeView(int width, int height);
void PresentToWindow(HDC hdc, unsigned outputFrameWidth, unsigned outputFrameHeight);
void DestroyResources();
void DestroySingleLayerProgram(LayerProgram& layerProgram);
void DestroyLayerPrograms();
void DestroyDecodeShaderProgram();
void DestroyOutputPackShaderProgram();
private:
GLuint mCaptureTexture = 0;
GLuint mDecodedTexture = 0;
GLuint mLayerTempTexture = 0;
GLuint mFBOTexture = 0;
GLuint mOutputTexture = 0;
GLuint mOutputPackTexture = 0;
GLuint mTextureUploadBuffer = 0;
GLuint mDecodeFrameBuf = 0;
GLuint mLayerTempFrameBuf = 0;
GLuint mIdFrameBuf = 0;
GLuint mOutputFrameBuf = 0;
GLuint mOutputPackFrameBuf = 0;
GLuint mIdColorBuf = 0;
GLuint mIdDepthBuf = 0;
GLuint mFullscreenVAO = 0;
GLuint mGlobalParamsUBO = 0;
GLuint mDecodeProgram = 0;
GLuint mDecodeVertexShader = 0;
GLuint mDecodeFragmentShader = 0;
GLuint mOutputPackProgram = 0;
GLuint mOutputPackVertexShader = 0;
GLuint mOutputPackFragmentShader = 0;
GLsizeiptr mGlobalParamsUBOSize = 0;
int mViewWidth = 0;
int mViewHeight = 0;
std::vector<LayerProgram> mLayerPrograms;
TemporalHistoryBuffers mTemporalHistory;
};

141
apps/LoopThroughWithOpenGLCompositing/gl/shader/GlShaderSources.cpp
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@@ -1,141 +0,0 @@
#include "GlShaderSources.h"
const char* kFullscreenTriangleVertexShaderSource =
"#version 430 core\n"
"out vec2 vTexCoord;\n"
"void main()\n"
"{\n"
" vec2 positions[3] = vec2[3](vec2(-1.0, -1.0), vec2(3.0, -1.0), vec2(-1.0, 3.0));\n"
" vec2 texCoords[3] = vec2[3](vec2(0.0, 0.0), vec2(2.0, 0.0), vec2(0.0, 2.0));\n"
" gl_Position = vec4(positions[gl_VertexID], 0.0, 1.0);\n"
" vTexCoord = texCoords[gl_VertexID];\n"
"}\n";
const char* kDecodeFragmentShaderSource =
"#version 430 core\n"
"layout(binding = 2) uniform sampler2D uPackedVideoInput;\n"
"uniform vec2 uPackedVideoResolution;\n"
"uniform vec2 uDecodedVideoResolution;\n"
"uniform int uInputPixelFormat;\n"
"in vec2 vTexCoord;\n"
"layout(location = 0) out vec4 fragColor;\n"
"vec4 rec709YCbCr2rgba(float Y, float Cb, float Cr, float a)\n"
"{\n"
" Y = (Y * 256.0 - 16.0) / 219.0;\n"
" Cb = (Cb * 256.0 - 16.0) / 224.0 - 0.5;\n"
" Cr = (Cr * 256.0 - 16.0) / 224.0 - 0.5;\n"
" return vec4(Y + 1.5748 * Cr, Y - 0.1873 * Cb - 0.4681 * Cr, Y + 1.8556 * Cb, a);\n"
"}\n"
"vec4 rec709YCbCr10_2rgba(float Y, float Cb, float Cr, float a)\n"
"{\n"
" Y = (Y - 64.0) / 876.0;\n"
" Cb = (Cb - 64.0) / 896.0 - 0.5;\n"
" Cr = (Cr - 64.0) / 896.0 - 0.5;\n"
" return vec4(Y + 1.5748 * Cr, Y - 0.1873 * Cb - 0.4681 * Cr, Y + 1.8556 * Cb, a);\n"
"}\n"
"uint loadV210Word(ivec2 coord)\n"
"{\n"
" vec4 b = round(texelFetch(uPackedVideoInput, coord, 0) * 255.0);\n"
" return uint(b.r) | (uint(b.g) << 8) | (uint(b.b) << 16) | (uint(b.a) << 24);\n"
"}\n"
"float v210Component(uint word, int index)\n"
"{\n"
" return float((word >> uint(index * 10)) & 1023u);\n"
"}\n"
"vec4 decodeUyvy8(ivec2 outputCoord, ivec2 packedSize)\n"
"{\n"
" ivec2 packedCoord = ivec2(clamp(outputCoord.x / 2, 0, packedSize.x - 1), clamp(outputCoord.y, 0, packedSize.y - 1));\n"
" vec4 macroPixel = texelFetch(uPackedVideoInput, packedCoord, 0);\n"
" float ySample = (outputCoord.x & 1) != 0 ? macroPixel.a : macroPixel.g;\n"
" return rec709YCbCr2rgba(ySample, macroPixel.b, macroPixel.r, 1.0);\n"
"}\n"
"vec4 decodeV210(ivec2 outputCoord, ivec2 packedSize)\n"
"{\n"
" int group = outputCoord.x / 6;\n"
" int pixel = outputCoord.x - group * 6;\n"
" int wordBase = group * 4;\n"
" ivec2 rowBase = ivec2(wordBase, clamp(outputCoord.y, 0, packedSize.y - 1));\n"
" uint w0 = loadV210Word(ivec2(min(rowBase.x + 0, packedSize.x - 1), rowBase.y));\n"
" uint w1 = loadV210Word(ivec2(min(rowBase.x + 1, packedSize.x - 1), rowBase.y));\n"
" uint w2 = loadV210Word(ivec2(min(rowBase.x + 2, packedSize.x - 1), rowBase.y));\n"
" uint w3 = loadV210Word(ivec2(min(rowBase.x + 3, packedSize.x - 1), rowBase.y));\n"
" float y0 = v210Component(w0, 1);\n"
" float y1 = v210Component(w1, 0);\n"
" float y2 = v210Component(w1, 2);\n"
" float y3 = v210Component(w2, 1);\n"
" float y4 = v210Component(w3, 0);\n"
" float y5 = v210Component(w3, 2);\n"
" float cb0 = v210Component(w0, 0);\n"
" float cr0 = v210Component(w0, 2);\n"
" float cb2 = v210Component(w1, 1);\n"
" float cr2 = v210Component(w2, 0);\n"
" float cb4 = v210Component(w2, 2);\n"
" float cr4 = v210Component(w3, 1);\n"
" float ySample = pixel == 0 ? y0 : pixel == 1 ? y1 : pixel == 2 ? y2 : pixel == 3 ? y3 : pixel == 4 ? y4 : y5;\n"
" float cbSample = pixel < 2 ? cb0 : pixel < 4 ? cb2 : cb4;\n"
" float crSample = pixel < 2 ? cr0 : pixel < 4 ? cr2 : cr4;\n"
" return rec709YCbCr10_2rgba(ySample, cbSample, crSample, 1.0);\n"
"}\n"
"void main()\n"
"{\n"
" vec2 correctedUv = vec2(vTexCoord.x, 1.0 - vTexCoord.y);\n"
" ivec2 decodedSize = ivec2(max(uDecodedVideoResolution, vec2(1.0, 1.0)));\n"
" ivec2 outputCoord = clamp(ivec2(correctedUv * vec2(decodedSize)), ivec2(0, 0), decodedSize - ivec2(1, 1));\n"
" ivec2 packedSize = ivec2(max(uPackedVideoResolution, vec2(1.0, 1.0)));\n"
" fragColor = uInputPixelFormat == 1 ? decodeV210(outputCoord, packedSize) : decodeUyvy8(outputCoord, packedSize);\n"
"}\n";
const char* kOutputPackFragmentShaderSource =
"#version 430 core\n"
"layout(binding = 0) uniform sampler2D uOutputRgb;\n"
"uniform vec2 uOutputVideoResolution;\n"
"uniform float uActiveV210Words;\n"
"in vec2 vTexCoord;\n"
"layout(location = 0) out vec4 fragColor;\n"
"vec3 rgbAt(int x, int y)\n"
"{\n"
" ivec2 size = ivec2(max(uOutputVideoResolution, vec2(1.0, 1.0)));\n"
" return clamp(texelFetch(uOutputRgb, ivec2(clamp(x, 0, size.x - 1), clamp(y, 0, size.y - 1)), 0).rgb, vec3(0.0), vec3(1.0));\n"
"}\n"
"vec3 rgbToLegalYcbcr10(vec3 rgb)\n"
"{\n"
" float y = dot(rgb, vec3(0.2126, 0.7152, 0.0722));\n"
" float cb = (rgb.b - y) / 1.8556 + 0.5;\n"
" float cr = (rgb.r - y) / 1.5748 + 0.5;\n"
" return vec3(clamp(round(64.0 + y * 876.0), 64.0, 940.0), clamp(round(64.0 + cb * 896.0), 64.0, 960.0), clamp(round(64.0 + cr * 896.0), 64.0, 960.0));\n"
"}\n"
"uint makeWord(float a, float b, float c)\n"
"{\n"
" return (uint(a) & 1023u) | ((uint(b) & 1023u) << 10) | ((uint(c) & 1023u) << 20);\n"
"}\n"
"vec4 wordToBytes(uint word)\n"
"{\n"
" return vec4(float(word & 255u), float((word >> 8) & 255u), float((word >> 16) & 255u), float((word >> 24) & 255u)) / 255.0;\n"
"}\n"
"void main()\n"
"{\n"
" ivec2 outCoord = ivec2(gl_FragCoord.xy);\n"
" if (float(outCoord.x) >= uActiveV210Words)\n"
" {\n"
" fragColor = vec4(0.0);\n"
" return;\n"
" }\n"
" int group = outCoord.x / 4;\n"
" int wordIndex = outCoord.x - group * 4;\n"
" int pixelBase = group * 6;\n"
" int y = outCoord.y;\n"
" vec3 c0 = rgbToLegalYcbcr10(rgbAt(pixelBase + 0, y));\n"
" vec3 c1 = rgbToLegalYcbcr10(rgbAt(pixelBase + 1, y));\n"
" vec3 c2 = rgbToLegalYcbcr10(rgbAt(pixelBase + 2, y));\n"
" vec3 c3 = rgbToLegalYcbcr10(rgbAt(pixelBase + 3, y));\n"
" vec3 c4 = rgbToLegalYcbcr10(rgbAt(pixelBase + 4, y));\n"
" vec3 c5 = rgbToLegalYcbcr10(rgbAt(pixelBase + 5, y));\n"
" float cb0 = round((c0.y + c1.y) * 0.5);\n"
" float cr0 = round((c0.z + c1.z) * 0.5);\n"
" float cb2 = round((c2.y + c3.y) * 0.5);\n"
" float cr2 = round((c2.z + c3.z) * 0.5);\n"
" float cb4 = round((c4.y + c5.y) * 0.5);\n"
" float cr4 = round((c4.z + c5.z) * 0.5);\n"
" uint word = wordIndex == 0 ? makeWord(cb0, c0.x, cr0) : wordIndex == 1 ? makeWord(c1.x, cb2, c2.x) : wordIndex == 2 ? makeWord(cr2, c3.x, cb4) : makeWord(c4.x, cr4, c5.x);\n"
" fragColor = wordToBytes(word);\n"
"}\n";

5
apps/LoopThroughWithOpenGLCompositing/gl/shader/GlShaderSources.h
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@@ -1,5 +0,0 @@
#pragma once
extern const char* kFullscreenTriangleVertexShaderSource;
extern const char* kDecodeFragmentShaderSource;
extern const char* kOutputPackFragmentShaderSource;

102
apps/LoopThroughWithOpenGLCompositing/gl/shader/GlobalParamsBuffer.cpp
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@@ -1,102 +0,0 @@
#include "GlobalParamsBuffer.h"
#include "GlRenderConstants.h"
#include "Std140Buffer.h"
#include <vector>
GlobalParamsBuffer::GlobalParamsBuffer(OpenGLRenderer& renderer) :
mRenderer(renderer)
{
}
bool GlobalParamsBuffer::Update(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength)
{
std::vector<unsigned char> buffer;
buffer.reserve(512);
AppendStd140Float(buffer, static_cast<float>(state.timeSeconds));
AppendStd140Vec2(buffer, static_cast<float>(state.inputWidth), static_cast<float>(state.inputHeight));
AppendStd140Vec2(buffer, static_cast<float>(state.outputWidth), static_cast<float>(state.outputHeight));
AppendStd140Float(buffer, static_cast<float>(state.utcTimeSeconds));
AppendStd140Float(buffer, static_cast<float>(state.utcOffsetSeconds));
AppendStd140Float(buffer, static_cast<float>(state.startupRandom));
AppendStd140Float(buffer, static_cast<float>(state.frameCount));
AppendStd140Float(buffer, static_cast<float>(state.mixAmount));
AppendStd140Float(buffer, static_cast<float>(state.bypass));
const unsigned effectiveSourceHistoryLength = availableSourceHistoryLength < state.effectiveTemporalHistoryLength
? availableSourceHistoryLength
: state.effectiveTemporalHistoryLength;
const unsigned effectiveTemporalHistoryLength = (state.temporalHistorySource == TemporalHistorySource::PreLayerInput)
? (availableTemporalHistoryLength < state.effectiveTemporalHistoryLength ? availableTemporalHistoryLength : state.effectiveTemporalHistoryLength)
: 0u;
AppendStd140Int(buffer, static_cast<int>(effectiveSourceHistoryLength));
AppendStd140Int(buffer, static_cast<int>(effectiveTemporalHistoryLength));
for (const ShaderParameterDefinition& definition : state.parameterDefinitions)
{
auto valueIt = state.parameterValues.find(definition.id);
const ShaderParameterValue value = valueIt != state.parameterValues.end()
? valueIt->second
: ShaderParameterValue();
switch (definition.type)
{
case ShaderParameterType::Float:
AppendStd140Float(buffer, value.numberValues.empty() ? 0.0f : static_cast<float>(value.numberValues[0]));
break;
case ShaderParameterType::Vec2:
AppendStd140Vec2(buffer,
value.numberValues.size() > 0 ? static_cast<float>(value.numberValues[0]) : 0.0f,
value.numberValues.size() > 1 ? static_cast<float>(value.numberValues[1]) : 0.0f);
break;
case ShaderParameterType::Color:
AppendStd140Vec4(buffer,
value.numberValues.size() > 0 ? static_cast<float>(value.numberValues[0]) : 1.0f,
value.numberValues.size() > 1 ? static_cast<float>(value.numberValues[1]) : 1.0f,
value.numberValues.size() > 2 ? static_cast<float>(value.numberValues[2]) : 1.0f,
value.numberValues.size() > 3 ? static_cast<float>(value.numberValues[3]) : 1.0f);
break;
case ShaderParameterType::Boolean:
AppendStd140Int(buffer, value.booleanValue ? 1 : 0);
break;
case ShaderParameterType::Enum:
{
int selectedIndex = 0;
for (std::size_t optionIndex = 0; optionIndex < definition.enumOptions.size(); ++optionIndex)
{
if (definition.enumOptions[optionIndex].value == value.enumValue)
{
selectedIndex = static_cast<int>(optionIndex);
break;
}
}
AppendStd140Int(buffer, selectedIndex);
break;
}
case ShaderParameterType::Text:
break;
case ShaderParameterType::Trigger:
AppendStd140Int(buffer, value.numberValues.empty() ? 0 : static_cast<int>(value.numberValues[0]));
AppendStd140Float(buffer, value.numberValues.size() > 1 ? static_cast<float>(value.numberValues[1]) : -1000000.0f);
break;
}
}
buffer.resize(AlignStd140(buffer.size(), 16), 0);
glBindBuffer(GL_UNIFORM_BUFFER, mRenderer.GlobalParamsUBO());
if (mRenderer.GlobalParamsUBOSize() != static_cast<GLsizeiptr>(buffer.size()))
{
glBufferData(GL_UNIFORM_BUFFER, static_cast<GLsizeiptr>(buffer.size()), buffer.data(), GL_DYNAMIC_DRAW);
mRenderer.SetGlobalParamsUBOSize(static_cast<GLsizeiptr>(buffer.size()));
}
else
{
glBufferSubData(GL_UNIFORM_BUFFER, 0, static_cast<GLsizeiptr>(buffer.size()), buffer.data());
}
glBindBufferBase(GL_UNIFORM_BUFFER, kGlobalParamsBindingPoint, mRenderer.GlobalParamsUBO());
glBindBuffer(GL_UNIFORM_BUFFER, 0);
return true;
}

15
apps/LoopThroughWithOpenGLCompositing/gl/shader/GlobalParamsBuffer.h
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@@ -1,15 +0,0 @@
#pragma once
#include "OpenGLRenderer.h"
#include "ShaderTypes.h"
class GlobalParamsBuffer
{
public:
explicit GlobalParamsBuffer(OpenGLRenderer& renderer);
bool Update(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength);
private:
OpenGLRenderer& mRenderer;
};

151
apps/LoopThroughWithOpenGLCompositing/gl/shader/OpenGLShaderPrograms.cpp
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@@ -1,151 +0,0 @@
#include "OpenGLShaderPrograms.h"
#include <cstring>
#include <string>
#include <vector>
namespace
{
void CopyErrorMessage(const std::string& message, int errorMessageSize, char* errorMessage)
{
if (!errorMessage || errorMessageSize <= 0)
return;
strncpy_s(errorMessage, errorMessageSize, message.c_str(), _TRUNCATE);
}
}
OpenGLShaderPrograms::OpenGLShaderPrograms(OpenGLRenderer& renderer, RuntimeHost& runtimeHost) :
mRenderer(renderer),
mRuntimeHost(runtimeHost),
mGlobalParamsBuffer(renderer),
mCompiler(renderer, runtimeHost, mTextureBindings)
{
}
bool OpenGLShaderPrograms::CompileLayerPrograms(unsigned inputFrameWidth, unsigned inputFrameHeight, int errorMessageSize, char* errorMessage)
{
const std::vector<RuntimeRenderState> layerStates = mRuntimeHost.GetLayerRenderStates(inputFrameWidth, inputFrameHeight);
std::string temporalError;
const unsigned historyCap = mRuntimeHost.GetMaxTemporalHistoryFrames();
if (!mRenderer.TemporalHistory().ValidateTextureUnitBudget(layerStates, historyCap, temporalError))
{
CopyErrorMessage(temporalError, errorMessageSize, errorMessage);
return false;
}
if (!mRenderer.TemporalHistory().EnsureResources(layerStates, historyCap, inputFrameWidth, inputFrameHeight, temporalError))
{
CopyErrorMessage(temporalError, errorMessageSize, errorMessage);
return false;
}
std::vector<LayerProgram> newPrograms;
newPrograms.reserve(layerStates.size());
for (const RuntimeRenderState& state : layerStates)
{
LayerProgram layerProgram;
if (!mCompiler.CompileLayerProgram(state, layerProgram, errorMessageSize, errorMessage))
{
for (LayerProgram& program : newPrograms)
DestroySingleLayerProgram(program);
return false;
}
newPrograms.push_back(layerProgram);
}
DestroyLayerPrograms();
mRenderer.ReplaceLayerPrograms(newPrograms);
mCommittedLayerStates = layerStates;
mRuntimeHost.SetCompileStatus(true, "Shader layers compiled successfully.");
mRuntimeHost.ClearReloadRequest();
return true;
}
bool OpenGLShaderPrograms::CommitPreparedLayerPrograms(const PreparedShaderBuild& preparedBuild, unsigned inputFrameWidth, unsigned inputFrameHeight, int errorMessageSize, char* errorMessage)
{
if (!preparedBuild.succeeded)
{
CopyErrorMessage(preparedBuild.message, errorMessageSize, errorMessage);
return false;
}
std::string temporalError;
const unsigned historyCap = mRuntimeHost.GetMaxTemporalHistoryFrames();
if (!mRenderer.TemporalHistory().ValidateTextureUnitBudget(preparedBuild.layerStates, historyCap, temporalError))
{
CopyErrorMessage(temporalError, errorMessageSize, errorMessage);
return false;
}
if (!mRenderer.TemporalHistory().EnsureResources(preparedBuild.layerStates, historyCap, inputFrameWidth, inputFrameHeight, temporalError))
{
CopyErrorMessage(temporalError, errorMessageSize, errorMessage);
return false;
}
std::vector<LayerProgram> newPrograms;
newPrograms.reserve(preparedBuild.layers.size());
for (const PreparedLayerShader& preparedLayer : preparedBuild.layers)
{
LayerProgram layerProgram;
if (!mCompiler.CompilePreparedLayerProgram(preparedLayer.state, preparedLayer.fragmentShaderSource, layerProgram, errorMessageSize, errorMessage))
{
for (LayerProgram& program : newPrograms)
DestroySingleLayerProgram(program);
return false;
}
newPrograms.push_back(layerProgram);
}
DestroyLayerPrograms();
mRenderer.ReplaceLayerPrograms(newPrograms);
mCommittedLayerStates = preparedBuild.layerStates;
mRuntimeHost.SetCompileStatus(true, "Shader layers compiled successfully.");
mRuntimeHost.ClearReloadRequest();
return true;
}
bool OpenGLShaderPrograms::CompileDecodeShader(int errorMessageSize, char* errorMessage)
{
return mCompiler.CompileDecodeShader(errorMessageSize, errorMessage);
}
bool OpenGLShaderPrograms::CompileOutputPackShader(int errorMessageSize, char* errorMessage)
{
return mCompiler.CompileOutputPackShader(errorMessageSize, errorMessage);
}
void OpenGLShaderPrograms::DestroySingleLayerProgram(LayerProgram& layerProgram)
{
mRenderer.DestroySingleLayerProgram(layerProgram);
}
void OpenGLShaderPrograms::DestroyLayerPrograms()
{
mRenderer.DestroyLayerPrograms();
}
void OpenGLShaderPrograms::DestroyDecodeShaderProgram()
{
mRenderer.DestroyDecodeShaderProgram();
}
void OpenGLShaderPrograms::ResetTemporalHistoryState()
{
mRenderer.TemporalHistory().ResetState();
}
bool OpenGLShaderPrograms::UpdateTextBindingTexture(const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error)
{
return mTextureBindings.UpdateTextBindingTexture(state, textBinding, error);
}
bool OpenGLShaderPrograms::UpdateGlobalParamsBuffer(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength)
{
return mGlobalParamsBuffer.Update(state, availableSourceHistoryLength, availableTemporalHistoryLength);
}

39
apps/LoopThroughWithOpenGLCompositing/gl/shader/OpenGLShaderPrograms.h
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@@ -1,39 +0,0 @@
#pragma once
#include "GlobalParamsBuffer.h"
#include "OpenGLRenderer.h"
#include "RuntimeHost.h"
#include "ShaderBuildQueue.h"
#include "ShaderTypes.h"
#include "ShaderProgramCompiler.h"
#include "ShaderTextureBindings.h"
#include <string>
class OpenGLShaderPrograms
{
public:
using LayerProgram = OpenGLRenderer::LayerProgram;
OpenGLShaderPrograms(OpenGLRenderer& renderer, RuntimeHost& runtimeHost);
bool CompileLayerPrograms(unsigned inputFrameWidth, unsigned inputFrameHeight, int errorMessageSize, char* errorMessage);
bool CommitPreparedLayerPrograms(const PreparedShaderBuild& preparedBuild, unsigned inputFrameWidth, unsigned inputFrameHeight, int errorMessageSize, char* errorMessage);
bool CompileDecodeShader(int errorMessageSize, char* errorMessage);
bool CompileOutputPackShader(int errorMessageSize, char* errorMessage);
void DestroyLayerPrograms();
void DestroySingleLayerProgram(LayerProgram& layerProgram);
void DestroyDecodeShaderProgram();
void ResetTemporalHistoryState();
const std::vector<RuntimeRenderState>& CommittedLayerStates() const { return mCommittedLayerStates; }
bool UpdateTextBindingTexture(const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error);
bool UpdateGlobalParamsBuffer(const RuntimeRenderState& state, unsigned availableSourceHistoryLength, unsigned availableTemporalHistoryLength);
private:
OpenGLRenderer& mRenderer;
RuntimeHost& mRuntimeHost;
ShaderTextureBindings mTextureBindings;
GlobalParamsBuffer mGlobalParamsBuffer;
ShaderProgramCompiler mCompiler;
std::vector<RuntimeRenderState> mCommittedLayerStates;
};

134
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderBuildQueue.cpp
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@@ -1,134 +0,0 @@
#include "ShaderBuildQueue.h"
#include "RuntimeHost.h"
#include <chrono>
#include <utility>
namespace
{
constexpr auto kShaderBuildDebounce = std::chrono::milliseconds(400);
}
ShaderBuildQueue::ShaderBuildQueue(RuntimeHost& runtimeHost) :
mRuntimeHost(runtimeHost),
mWorkerThread([this]() { WorkerLoop(); })
{
}
ShaderBuildQueue::~ShaderBuildQueue()
{
Stop();
}
void ShaderBuildQueue::RequestBuild(unsigned outputWidth, unsigned outputHeight)
{
{
std::lock_guard<std::mutex> lock(mMutex);
mHasRequest = true;
++mRequestedGeneration;
mRequestedOutputWidth = outputWidth;
mRequestedOutputHeight = outputHeight;
mHasReadyBuild = false;
}
mCondition.notify_one();
}
bool ShaderBuildQueue::TryConsumeReadyBuild(PreparedShaderBuild& build)
{
std::lock_guard<std::mutex> lock(mMutex);
if (!mHasReadyBuild)
return false;
build = std::move(mReadyBuild);
mReadyBuild = PreparedShaderBuild();
mHasReadyBuild = false;
return true;
}
void ShaderBuildQueue::Stop()
{
{
std::lock_guard<std::mutex> lock(mMutex);
if (mStopping)
return;
mStopping = true;
}
mCondition.notify_one();
if (mWorkerThread.joinable())
mWorkerThread.join();
}
void ShaderBuildQueue::WorkerLoop()
{
for (;;)
{
uint64_t generation = 0;
unsigned outputWidth = 0;
unsigned outputHeight = 0;
{
std::unique_lock<std::mutex> lock(mMutex);
mCondition.wait(lock, [this]() { return mStopping || mHasRequest; });
if (mStopping)
return;
generation = mRequestedGeneration;
outputWidth = mRequestedOutputWidth;
outputHeight = mRequestedOutputHeight;
mHasRequest = false;
}
for (;;)
{
std::unique_lock<std::mutex> lock(mMutex);
if (mCondition.wait_for(lock, kShaderBuildDebounce, [this, generation]() {
return mStopping || (mHasRequest && mRequestedGeneration != generation);
}))
{
if (mStopping)
return;
generation = mRequestedGeneration;
outputWidth = mRequestedOutputWidth;
outputHeight = mRequestedOutputHeight;
mHasRequest = false;
continue;
}
break;
}
PreparedShaderBuild build = Build(generation, outputWidth, outputHeight);
std::lock_guard<std::mutex> lock(mMutex);
if (mStopping)
return;
if (generation != mRequestedGeneration)
continue;
mReadyBuild = std::move(build);
mHasReadyBuild = true;
}
}
PreparedShaderBuild ShaderBuildQueue::Build(uint64_t generation, unsigned outputWidth, unsigned outputHeight)
{
PreparedShaderBuild build;
build.generation = generation;
build.layerStates = mRuntimeHost.GetLayerRenderStates(outputWidth, outputHeight);
build.layers.reserve(build.layerStates.size());
for (const RuntimeRenderState& state : build.layerStates)
{
PreparedLayerShader layer;
layer.state = state;
if (!mRuntimeHost.BuildLayerFragmentShaderSource(state.layerId, layer.fragmentShaderSource, build.message))
{
build.succeeded = false;
return build;
}
build.layers.push_back(std::move(layer));
}
build.succeeded = true;
build.message = "Shader layers prepared successfully.";
return build;
}

57
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderBuildQueue.h
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@@ -1,57 +0,0 @@
#pragma once
#include "ShaderTypes.h"
#include <condition_variable>
#include <cstdint>
#include <mutex>
#include <string>
#include <thread>
#include <vector>
class RuntimeHost;
struct PreparedLayerShader
{
RuntimeRenderState state;
std::string fragmentShaderSource;
};
struct PreparedShaderBuild
{
uint64_t generation = 0;
bool succeeded = false;
std::string message;
std::vector<RuntimeRenderState> layerStates;
std::vector<PreparedLayerShader> layers;
};
class ShaderBuildQueue
{
public:
explicit ShaderBuildQueue(RuntimeHost& runtimeHost);
~ShaderBuildQueue();
ShaderBuildQueue(const ShaderBuildQueue&) = delete;
ShaderBuildQueue& operator=(const ShaderBuildQueue&) = delete;
void RequestBuild(unsigned outputWidth, unsigned outputHeight);
bool TryConsumeReadyBuild(PreparedShaderBuild& build);
void Stop();
private:
void WorkerLoop();
PreparedShaderBuild Build(uint64_t generation, unsigned outputWidth, unsigned outputHeight);
RuntimeHost& mRuntimeHost;
std::thread mWorkerThread;
std::mutex mMutex;
std::condition_variable mCondition;
bool mStopping = false;
bool mHasRequest = false;
uint64_t mRequestedGeneration = 0;
unsigned mRequestedOutputWidth = 0;
unsigned mRequestedOutputHeight = 0;
bool mHasReadyBuild = false;
PreparedShaderBuild mReadyBuild;
};

244
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp
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@@ -1,244 +0,0 @@
#include "ShaderProgramCompiler.h"
#include "GlRenderConstants.h"
#include "GlScopedObjects.h"
#include "GlShaderSources.h"
#include <cstring>
#include <vector>
namespace
{
void CopyErrorMessage(const std::string& message, int errorMessageSize, char* errorMessage)
{
if (!errorMessage || errorMessageSize <= 0)
return;
strncpy_s(errorMessage, errorMessageSize, message.c_str(), _TRUNCATE);
}
}
ShaderProgramCompiler::ShaderProgramCompiler(OpenGLRenderer& renderer, RuntimeHost& runtimeHost, ShaderTextureBindings& textureBindings) :
mRenderer(renderer),
mRuntimeHost(runtimeHost),
mTextureBindings(textureBindings)
{
}
bool ShaderProgramCompiler::CompileLayerProgram(const RuntimeRenderState& state, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage)
{
std::string fragmentShaderSource;
std::string loadError;
if (!mRuntimeHost.BuildLayerFragmentShaderSource(state.layerId, fragmentShaderSource, loadError))
{
CopyErrorMessage(loadError, errorMessageSize, errorMessage);
return false;
}
return CompilePreparedLayerProgram(state, fragmentShaderSource, layerProgram, errorMessageSize, errorMessage);
}
bool ShaderProgramCompiler::CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::string& fragmentShaderSource, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage)
{
GLsizei errorBufferSize = 0;
GLint compileResult = GL_FALSE;
GLint linkResult = GL_FALSE;
std::string loadError;
std::vector<LayerProgram::TextureBinding> textureBindings;
const char* vertexSource = kFullscreenTriangleVertexShaderSource;
const char* fragmentSource = fragmentShaderSource.c_str();
ScopedGlShader newVertexShader(glCreateShader(GL_VERTEX_SHADER));
glShaderSource(newVertexShader.get(), 1, (const GLchar**)&vertexSource, NULL);
glCompileShader(newVertexShader.get());
glGetShaderiv(newVertexShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newVertexShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlShader newFragmentShader(glCreateShader(GL_FRAGMENT_SHADER));
glShaderSource(newFragmentShader.get(), 1, (const GLchar**)&fragmentSource, NULL);
glCompileShader(newFragmentShader.get());
glGetShaderiv(newFragmentShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newFragmentShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlProgram newProgram(glCreateProgram());
glAttachShader(newProgram.get(), newVertexShader.get());
glAttachShader(newProgram.get(), newFragmentShader.get());
glLinkProgram(newProgram.get());
glGetProgramiv(newProgram.get(), GL_LINK_STATUS, &linkResult);
if (linkResult == GL_FALSE)
{
glGetProgramInfoLog(newProgram.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
for (const ShaderTextureAsset& textureAsset : state.textureAssets)
{
LayerProgram::TextureBinding textureBinding;
textureBinding.samplerName = textureAsset.id;
textureBinding.sourcePath = textureAsset.path;
if (!mTextureBindings.LoadTextureAsset(textureAsset, textureBinding.texture, loadError))
{
for (LayerProgram::TextureBinding& loadedTexture : textureBindings)
{
if (loadedTexture.texture != 0)
glDeleteTextures(1, &loadedTexture.texture);
}
CopyErrorMessage(loadError, errorMessageSize, errorMessage);
return false;
}
textureBindings.push_back(textureBinding);
}
std::vector<LayerProgram::TextBinding> textBindings;
mTextureBindings.CreateTextBindings(state, textBindings);
const GLuint globalParamsIndex = glGetUniformBlockIndex(newProgram.get(), "GlobalParams");
if (globalParamsIndex != GL_INVALID_INDEX)
glUniformBlockBinding(newProgram.get(), globalParamsIndex, kGlobalParamsBindingPoint);
const unsigned historyCap = mRuntimeHost.GetMaxTemporalHistoryFrames();
const GLuint shaderTextureBase = state.isTemporal ? kSourceHistoryTextureUnitBase + historyCap + historyCap : kSourceHistoryTextureUnitBase;
glUseProgram(newProgram.get());
const GLint videoInputLocation = glGetUniformLocation(newProgram.get(), "gVideoInput");
if (videoInputLocation >= 0)
glUniform1i(videoInputLocation, static_cast<GLint>(kDecodedVideoTextureUnit));
for (unsigned index = 0; index < historyCap; ++index)
{
const std::string sourceSamplerName = "gSourceHistory" + std::to_string(index);
const GLint sourceSamplerLocation = glGetUniformLocation(newProgram.get(), sourceSamplerName.c_str());
if (sourceSamplerLocation >= 0)
glUniform1i(sourceSamplerLocation, static_cast<GLint>(kSourceHistoryTextureUnitBase + index));
const std::string temporalSamplerName = "gTemporalHistory" + std::to_string(index);
const GLint temporalSamplerLocation = glGetUniformLocation(newProgram.get(), temporalSamplerName.c_str());
if (temporalSamplerLocation >= 0)
glUniform1i(temporalSamplerLocation, static_cast<GLint>(kSourceHistoryTextureUnitBase + historyCap + index));
}
for (std::size_t index = 0; index < textureBindings.size(); ++index)
{
const GLint textureSamplerLocation = mTextureBindings.FindSamplerUniformLocation(newProgram.get(), textureBindings[index].samplerName);
if (textureSamplerLocation >= 0)
glUniform1i(textureSamplerLocation, static_cast<GLint>(shaderTextureBase + static_cast<GLuint>(index)));
}
const GLuint textTextureBase = shaderTextureBase + static_cast<GLuint>(textureBindings.size());
for (std::size_t index = 0; index < textBindings.size(); ++index)
{
const GLint textSamplerLocation = mTextureBindings.FindSamplerUniformLocation(newProgram.get(), textBindings[index].samplerName);
if (textSamplerLocation >= 0)
glUniform1i(textSamplerLocation, static_cast<GLint>(textTextureBase + static_cast<GLuint>(index)));
}
glUseProgram(0);
layerProgram.layerId = state.layerId;
layerProgram.shaderId = state.shaderId;
layerProgram.shaderTextureBase = shaderTextureBase;
layerProgram.program = newProgram.release();
layerProgram.vertexShader = newVertexShader.release();
layerProgram.fragmentShader = newFragmentShader.release();
layerProgram.textureBindings.swap(textureBindings);
layerProgram.textBindings.swap(textBindings);
return true;
}
bool ShaderProgramCompiler::CompileDecodeShader(int errorMessageSize, char* errorMessage)
{
GLsizei errorBufferSize = 0;
GLint compileResult = GL_FALSE;
GLint linkResult = GL_FALSE;
const char* vertexSource = kFullscreenTriangleVertexShaderSource;
const char* fragmentSource = kDecodeFragmentShaderSource;
ScopedGlShader newVertexShader(glCreateShader(GL_VERTEX_SHADER));
glShaderSource(newVertexShader.get(), 1, (const GLchar**)&vertexSource, NULL);
glCompileShader(newVertexShader.get());
glGetShaderiv(newVertexShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newVertexShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlShader newFragmentShader(glCreateShader(GL_FRAGMENT_SHADER));
glShaderSource(newFragmentShader.get(), 1, (const GLchar**)&fragmentSource, NULL);
glCompileShader(newFragmentShader.get());
glGetShaderiv(newFragmentShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newFragmentShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlProgram newProgram(glCreateProgram());
glAttachShader(newProgram.get(), newVertexShader.get());
glAttachShader(newProgram.get(), newFragmentShader.get());
glLinkProgram(newProgram.get());
glGetProgramiv(newProgram.get(), GL_LINK_STATUS, &linkResult);
if (linkResult == GL_FALSE)
{
glGetProgramInfoLog(newProgram.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
mRenderer.DestroyDecodeShaderProgram();
mRenderer.SetDecodeShaderProgram(newProgram.release(), newVertexShader.release(), newFragmentShader.release());
return true;
}
bool ShaderProgramCompiler::CompileOutputPackShader(int errorMessageSize, char* errorMessage)
{
GLsizei errorBufferSize = 0;
GLint compileResult = GL_FALSE;
GLint linkResult = GL_FALSE;
const char* vertexSource = kFullscreenTriangleVertexShaderSource;
const char* fragmentSource = kOutputPackFragmentShaderSource;
ScopedGlShader newVertexShader(glCreateShader(GL_VERTEX_SHADER));
glShaderSource(newVertexShader.get(), 1, (const GLchar**)&vertexSource, NULL);
glCompileShader(newVertexShader.get());
glGetShaderiv(newVertexShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newVertexShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlShader newFragmentShader(glCreateShader(GL_FRAGMENT_SHADER));
glShaderSource(newFragmentShader.get(), 1, (const GLchar**)&fragmentSource, NULL);
glCompileShader(newFragmentShader.get());
glGetShaderiv(newFragmentShader.get(), GL_COMPILE_STATUS, &compileResult);
if (compileResult == GL_FALSE)
{
glGetShaderInfoLog(newFragmentShader.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
ScopedGlProgram newProgram(glCreateProgram());
glAttachShader(newProgram.get(), newVertexShader.get());
glAttachShader(newProgram.get(), newFragmentShader.get());
glLinkProgram(newProgram.get());
glGetProgramiv(newProgram.get(), GL_LINK_STATUS, &linkResult);
if (linkResult == GL_FALSE)
{
glGetProgramInfoLog(newProgram.get(), errorMessageSize, &errorBufferSize, errorMessage);
return false;
}
glUseProgram(newProgram.get());
const GLint outputSamplerLocation = glGetUniformLocation(newProgram.get(), "uOutputRgb");
if (outputSamplerLocation >= 0)
glUniform1i(outputSamplerLocation, 0);
glUseProgram(0);
mRenderer.DestroyOutputPackShaderProgram();
mRenderer.SetOutputPackShaderProgram(newProgram.release(), newVertexShader.release(), newFragmentShader.release());
return true;
}

25
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.h
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@@ -1,25 +0,0 @@
#pragma once
#include "OpenGLRenderer.h"
#include "RuntimeHost.h"
#include "ShaderTextureBindings.h"
#include <string>
class ShaderProgramCompiler
{
public:
using LayerProgram = OpenGLRenderer::LayerProgram;
ShaderProgramCompiler(OpenGLRenderer& renderer, RuntimeHost& runtimeHost, ShaderTextureBindings& textureBindings);
bool CompileLayerProgram(const RuntimeRenderState& state, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
bool CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::string& fragmentShaderSource, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
bool CompileDecodeShader(int errorMessageSize, char* errorMessage);
bool CompileOutputPackShader(int errorMessageSize, char* errorMessage);
private:
OpenGLRenderer& mRenderer;
RuntimeHost& mRuntimeHost;
ShaderTextureBindings& mTextureBindings;
};

104
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderTextureBindings.cpp
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@@ -1,104 +0,0 @@
#include "ShaderTextureBindings.h"
#include "GlRenderConstants.h"
#include "TextRasterizer.h"
#include "TextureAssetLoader.h"
#include <algorithm>
#include <filesystem>
namespace
{
std::string TextValueForBinding(const RuntimeRenderState& state, const std::string& parameterId)
{
auto valueIt = state.parameterValues.find(parameterId);
return valueIt == state.parameterValues.end() ? std::string() : valueIt->second.textValue;
}
const ShaderFontAsset* FindFontAssetForParameter(const RuntimeRenderState& state, const ShaderParameterDefinition& definition)
{
if (!definition.fontId.empty())
{
for (const ShaderFontAsset& fontAsset : state.fontAssets)
{
if (fontAsset.id == definition.fontId)
return &fontAsset;
}
}
return state.fontAssets.empty() ? nullptr : &state.fontAssets.front();
}
}
bool ShaderTextureBindings::LoadTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error)
{
return ::LoadTextureAsset(textureAsset, textureId, error);
}
void ShaderTextureBindings::CreateTextBindings(const RuntimeRenderState& state, std::vector<LayerProgram::TextBinding>& textBindings)
{
for (const ShaderParameterDefinition& definition : state.parameterDefinitions)
{
if (definition.type != ShaderParameterType::Text)
continue;
LayerProgram::TextBinding textBinding;
textBinding.parameterId = definition.id;
textBinding.samplerName = definition.id + "Texture";
textBinding.fontId = definition.fontId;
glGenTextures(1, &textBinding.texture);
glBindTexture(GL_TEXTURE_2D, textBinding.texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
std::vector<unsigned char> empty(static_cast<std::size_t>(kTextTextureWidth) * kTextTextureHeight * 4, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, kTextTextureWidth, kTextTextureHeight, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, empty.data());
glBindTexture(GL_TEXTURE_2D, 0);
textBindings.push_back(textBinding);
}
}
bool ShaderTextureBindings::UpdateTextBindingTexture(const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error)
{
const std::string text = TextValueForBinding(state, textBinding.parameterId);
if (text == textBinding.renderedText && textBinding.renderedWidth == kTextTextureWidth && textBinding.renderedHeight == kTextTextureHeight)
return true;
auto definitionIt = std::find_if(state.parameterDefinitions.begin(), state.parameterDefinitions.end(),
[&textBinding](const ShaderParameterDefinition& definition) { return definition.id == textBinding.parameterId; });
if (definitionIt == state.parameterDefinitions.end())
return true;
const ShaderFontAsset* fontAsset = FindFontAssetForParameter(state, *definitionIt);
std::filesystem::path fontPath;
if (fontAsset)
fontPath = fontAsset->path;
std::vector<unsigned char> sdf;
if (!RasterizeTextSdf(text, fontPath, sdf, error))
return false;
GLint previousActiveTexture = 0;
GLint previousUnpackBuffer = 0;
glGetIntegerv(GL_ACTIVE_TEXTURE, &previousActiveTexture);
glGetIntegerv(GL_PIXEL_UNPACK_BUFFER_BINDING, &previousUnpackBuffer);
glActiveTexture(GL_TEXTURE0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, textBinding.texture);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, kTextTextureWidth, kTextTextureHeight, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, sdf.data());
glBindTexture(GL_TEXTURE_2D, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, static_cast<GLuint>(previousUnpackBuffer));
glActiveTexture(static_cast<GLenum>(previousActiveTexture));
textBinding.renderedText = text;
textBinding.renderedWidth = kTextTextureWidth;
textBinding.renderedHeight = kTextTextureHeight;
return true;
}
GLint ShaderTextureBindings::FindSamplerUniformLocation(GLuint program, const std::string& samplerName) const
{
GLint location = glGetUniformLocation(program, samplerName.c_str());
if (location >= 0)
return location;
return glGetUniformLocation(program, (samplerName + "_0").c_str());
}

18
apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderTextureBindings.h
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#pragma once
#include "OpenGLRenderer.h"
#include "ShaderTypes.h"
#include <string>
#include <vector>
class ShaderTextureBindings
{
public:
using LayerProgram = OpenGLRenderer::LayerProgram;
bool LoadTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error);
void CreateTextBindings(const RuntimeRenderState& state, std::vector<LayerProgram::TextBinding>& textBindings);
bool UpdateTextBindingTexture(const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error);
GLint FindSamplerUniformLocation(GLuint program, const std::string& samplerName) const;
};

48
apps/LoopThroughWithOpenGLCompositing/gl/shader/Std140Buffer.h
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#pragma once
#include <cstddef>
#include <cstring>
#include <vector>
inline std::size_t AlignStd140(std::size_t offset, std::size_t alignment)
{
const std::size_t mask = alignment - 1;
return (offset + mask) & ~mask;
}
template <typename TValue>
inline void AppendStd140Value(std::vector<unsigned char>& buffer, std::size_t alignment, const TValue& value)
{
const std::size_t offset = AlignStd140(buffer.size(), alignment);
if (buffer.size() < offset + sizeof(TValue))
buffer.resize(offset + sizeof(TValue), 0);
std::memcpy(buffer.data() + offset, &value, sizeof(TValue));
}
inline void AppendStd140Float(std::vector<unsigned char>& buffer, float value)
{
AppendStd140Value(buffer, 4, value);
}
inline void AppendStd140Int(std::vector<unsigned char>& buffer, int value)
{
AppendStd140Value(buffer, 4, value);
}
inline void AppendStd140Vec2(std::vector<unsigned char>& buffer, float x, float y)
{
const std::size_t offset = AlignStd140(buffer.size(), 8);
if (buffer.size() < offset + sizeof(float) * 2)
buffer.resize(offset + sizeof(float) * 2, 0);
float values[2] = { x, y };
std::memcpy(buffer.data() + offset, values, sizeof(values));
}
inline void AppendStd140Vec4(std::vector<unsigned char>& buffer, float x, float y, float z, float w)
{
const std::size_t offset = AlignStd140(buffer.size(), 16);
if (buffer.size() < offset + sizeof(float) * 4)
buffer.resize(offset + sizeof(float) * 4, 0);
float values[4] = { x, y, z, w };
std::memcpy(buffer.data() + offset, values, sizeof(values));
}

243
apps/LoopThroughWithOpenGLCompositing/gl/shader/TextRasterizer.cpp
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#include "TextRasterizer.h"
#include <windows.h>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <gdiplus.h>
#include <memory>
namespace
{
constexpr int kTextSdfSpread = 20;
constexpr float kTextFontPixelSize = 144.0f;
constexpr float kTextLayoutPadding = 48.0f;
constexpr float kSdfInfinity = 1.0e20f;
class GdiplusSession
{
public:
GdiplusSession()
{
Gdiplus::GdiplusStartupInput startupInput;
mStarted = Gdiplus::GdiplusStartup(&mToken, &startupInput, NULL) == Gdiplus::Ok;
}
~GdiplusSession()
{
if (mStarted)
Gdiplus::GdiplusShutdown(mToken);
}
GdiplusSession(const GdiplusSession&) = delete;
GdiplusSession& operator=(const GdiplusSession&) = delete;
bool started() const { return mStarted; }
private:
ULONG_PTR mToken = 0;
bool mStarted = false;
};
std::wstring Utf8ToWide(const std::string& text)
{
if (text.empty())
return std::wstring();
const int required = MultiByteToWideChar(CP_UTF8, 0, text.c_str(), -1, NULL, 0);
if (required <= 1)
return std::wstring();
std::wstring wide(static_cast<std::size_t>(required - 1), L'\0');
MultiByteToWideChar(CP_UTF8, 0, text.c_str(), -1, wide.data(), required);
return wide;
}
void DistanceTransform1D(const std::vector<float>& input, std::vector<float>& output, unsigned count)
{
std::vector<unsigned> locations(count, 0);
std::vector<float> boundaries(static_cast<std::size_t>(count) + 1, 0.0f);
unsigned segment = 0;
locations[0] = 0;
boundaries[0] = -kSdfInfinity;
boundaries[1] = kSdfInfinity;
for (unsigned q = 1; q < count; ++q)
{
float intersection = 0.0f;
for (;;)
{
const unsigned location = locations[segment];
intersection =
((input[q] + static_cast<float>(q * q)) - (input[location] + static_cast<float>(location * location))) /
(2.0f * static_cast<float>(q) - 2.0f * static_cast<float>(location));
if (intersection > boundaries[segment] || segment == 0)
break;
--segment;
}
++segment;
locations[segment] = q;
boundaries[segment] = intersection;
boundaries[segment + 1] = kSdfInfinity;
}
segment = 0;
for (unsigned q = 0; q < count; ++q)
{
while (boundaries[segment + 1] < static_cast<float>(q))
++segment;
const unsigned location = locations[segment];
const float delta = static_cast<float>(q) - static_cast<float>(location);
output[q] = delta * delta + input[location];
}
}
std::vector<float> DistanceTransform2D(const std::vector<unsigned char>& targetMask, unsigned width, unsigned height)
{
std::vector<float> rowInput(width, 0.0f);
std::vector<float> rowOutput(width, 0.0f);
std::vector<float> columnInput(height, 0.0f);
std::vector<float> columnOutput(height, 0.0f);
std::vector<float> rowDistance(static_cast<std::size_t>(width) * height, 0.0f);
std::vector<float> distance(static_cast<std::size_t>(width) * height, 0.0f);
for (unsigned y = 0; y < height; ++y)
{
for (unsigned x = 0; x < width; ++x)
rowInput[x] = targetMask[static_cast<std::size_t>(y) * width + x] ? 0.0f : kSdfInfinity;
DistanceTransform1D(rowInput, rowOutput, width);
for (unsigned x = 0; x < width; ++x)
rowDistance[static_cast<std::size_t>(y) * width + x] = rowOutput[x];
}
for (unsigned x = 0; x < width; ++x)
{
for (unsigned y = 0; y < height; ++y)
columnInput[y] = rowDistance[static_cast<std::size_t>(y) * width + x];
DistanceTransform1D(columnInput, columnOutput, height);
for (unsigned y = 0; y < height; ++y)
distance[static_cast<std::size_t>(y) * width + x] = columnOutput[y];
}
return distance;
}
std::vector<unsigned char> BuildTextSdfTexture(const std::vector<unsigned char>& alpha, unsigned width, unsigned height)
{
std::vector<unsigned char> insideMask(static_cast<std::size_t>(width) * height, 0);
std::vector<unsigned char> outsideMask(static_cast<std::size_t>(width) * height, 0);
for (std::size_t index = 0; index < alpha.size(); ++index)
{
const bool inside = alpha[index] > 127;
insideMask[index] = inside ? 1 : 0;
outsideMask[index] = inside ? 0 : 1;
}
const std::vector<float> distanceToInside = DistanceTransform2D(insideMask, width, height);
const std::vector<float> distanceToOutside = DistanceTransform2D(outsideMask, width, height);
std::vector<unsigned char> sdf(static_cast<std::size_t>(width) * height * 4, 0);
for (unsigned y = 0; y < height; ++y)
{
const unsigned flippedY = height - 1 - y;
for (unsigned x = 0; x < width; ++x)
{
const std::size_t source = static_cast<std::size_t>(y) * width + x;
const float signedDistance = std::sqrt(distanceToOutside[source]) - std::sqrt(distanceToInside[source]);
const float normalized = std::clamp(
0.5f + signedDistance / static_cast<float>(kTextSdfSpread * 2),
0.0f,
1.0f);
const unsigned char value = static_cast<unsigned char>(normalized * 255.0f + 0.5f);
const std::size_t out = (static_cast<std::size_t>(flippedY) * width + x) * 4;
sdf[out + 0] = value;
sdf[out + 1] = value;
sdf[out + 2] = value;
sdf[out + 3] = value;
}
}
return sdf;
}
}
bool RasterizeTextSdf(const std::string& text, const std::filesystem::path& fontPath, std::vector<unsigned char>& sdf, std::string& error)
{
GdiplusSession gdiplus;
if (!gdiplus.started())
{
error = "Could not start GDI+ for text rendering.";
return false;
}
Gdiplus::PrivateFontCollection fontCollection;
Gdiplus::FontFamily fallbackFamily(L"Arial");
Gdiplus::FontFamily* fontFamily = &fallbackFamily;
std::unique_ptr<Gdiplus::FontFamily[]> families;
const std::wstring wideFontPath = fontPath.empty() ? std::wstring() : fontPath.wstring();
if (!wideFontPath.empty())
{
if (fontCollection.AddFontFile(wideFontPath.c_str()) != Gdiplus::Ok)
{
error = "Could not load packaged font file for text rendering: " + fontPath.string();
return false;
}
const INT familyCount = fontCollection.GetFamilyCount();
if (familyCount <= 0)
{
error = "Packaged font did not contain a usable font family: " + fontPath.string();
return false;
}
families.reset(new Gdiplus::FontFamily[familyCount]);
INT found = 0;
if (fontCollection.GetFamilies(familyCount, families.get(), &found) != Gdiplus::Ok || found <= 0)
{
error = "Could not read the packaged font family: " + fontPath.string();
return false;
}
fontFamily = &families[0];
}
Gdiplus::Bitmap bitmap(kTextTextureWidth, kTextTextureHeight, PixelFormat32bppARGB);
Gdiplus::Graphics graphics(&bitmap);
graphics.SetCompositingMode(Gdiplus::CompositingModeSourceCopy);
graphics.Clear(Gdiplus::Color(255, 0, 0, 0));
graphics.SetCompositingMode(Gdiplus::CompositingModeSourceOver);
graphics.SetTextRenderingHint(Gdiplus::TextRenderingHintAntiAlias);
graphics.SetSmoothingMode(Gdiplus::SmoothingModeHighQuality);
Gdiplus::Font font(fontFamily, kTextFontPixelSize, Gdiplus::FontStyleRegular, Gdiplus::UnitPixel);
Gdiplus::SolidBrush brush(Gdiplus::Color(255, 255, 255, 255));
Gdiplus::StringFormat format;
format.SetAlignment(Gdiplus::StringAlignmentNear);
format.SetLineAlignment(Gdiplus::StringAlignmentCenter);
format.SetFormatFlags(Gdiplus::StringFormatFlagsNoWrap | Gdiplus::StringFormatFlagsMeasureTrailingSpaces);
const Gdiplus::RectF layout(
kTextLayoutPadding,
0.0f,
static_cast<Gdiplus::REAL>(kTextTextureWidth) - (kTextLayoutPadding * 2.0f),
static_cast<Gdiplus::REAL>(kTextTextureHeight));
const std::wstring wideText = Utf8ToWide(text);
graphics.DrawString(wideText.c_str(), -1, &font, layout, &format, &brush);
std::vector<unsigned char> alpha(static_cast<std::size_t>(kTextTextureWidth) * kTextTextureHeight, 0);
for (unsigned y = 0; y < kTextTextureHeight; ++y)
{
for (unsigned x = 0; x < kTextTextureWidth; ++x)
{
Gdiplus::Color pixel;
bitmap.GetPixel(x, y, &pixel);
BYTE luminance = pixel.GetRed();
if (pixel.GetGreen() > luminance)
luminance = pixel.GetGreen();
if (pixel.GetBlue() > luminance)
luminance = pixel.GetBlue();
alpha[static_cast<std::size_t>(y) * kTextTextureWidth + x] = static_cast<unsigned char>(luminance);
}
}
sdf = BuildTextSdfTexture(alpha, kTextTextureWidth, kTextTextureHeight);
return true;
}

10
apps/LoopThroughWithOpenGLCompositing/gl/shader/TextRasterizer.h
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@@ -1,10 +0,0 @@
#pragma once
#include <filesystem>
#include <string>
#include <vector>
constexpr unsigned kTextTextureWidth = 4096;
constexpr unsigned kTextTextureHeight = 512;
bool RasterizeTextSdf(const std::string& text, const std::filesystem::path& fontPath, std::vector<unsigned char>& sdf, std::string& error);

222
apps/LoopThroughWithOpenGLCompositing/gl/shader/TextureAssetLoader.cpp
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@@ -1,222 +0,0 @@
#include "TextureAssetLoader.h"
#include <windows.h>
#include <wincodec.h>
#include <atlbase.h>
#include <algorithm>
#include <cctype>
#include <cstring>
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
#ifndef GL_RGBA32F
#define GL_RGBA32F 0x8814
#endif
namespace
{
std::string LowercaseExtension(const std::filesystem::path& path)
{
std::string extension = path.extension().string();
std::transform(extension.begin(), extension.end(), extension.begin(),
[](unsigned char value) { return static_cast<char>(std::tolower(value)); });
return extension;
}
bool LoadCubeTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error)
{
std::ifstream file(textureAsset.path);
if (!file)
{
error = "Could not open shader LUT asset: " + textureAsset.path.string();
return false;
}
unsigned lutSize = 0;
std::vector<float> values;
std::string line;
while (std::getline(file, line))
{
const std::size_t commentStart = line.find('#');
if (commentStart != std::string::npos)
line.resize(commentStart);
std::istringstream stream(line);
std::string firstToken;
if (!(stream >> firstToken))
continue;
if (firstToken == "TITLE" || firstToken == "DOMAIN_MIN" || firstToken == "DOMAIN_MAX")
continue;
if (firstToken == "LUT_3D_SIZE")
{
stream >> lutSize;
continue;
}
if (firstToken == "LUT_1D_SIZE")
{
error = "Only 3D .cube LUT assets are supported: " + textureAsset.path.string();
return false;
}
float red = 0.0f;
float green = 0.0f;
float blue = 0.0f;
try
{
red = std::stof(firstToken);
}
catch (...)
{
error = "Unsupported .cube directive in shader LUT asset: " + firstToken;
return false;
}
if (!(stream >> green >> blue))
{
error = "Malformed RGB entry in shader LUT asset: " + textureAsset.path.string();
return false;
}
values.push_back(red);
values.push_back(green);
values.push_back(blue);
values.push_back(1.0f);
}
if (lutSize == 0)
{
error = "Shader LUT asset is missing LUT_3D_SIZE: " + textureAsset.path.string();
return false;
}
const std::size_t expectedFloats = static_cast<std::size_t>(lutSize) * lutSize * lutSize * 4;
if (values.size() != expectedFloats)
{
error = "Shader LUT asset entry count does not match LUT_3D_SIZE: " + textureAsset.path.string();
return false;
}
const GLsizei atlasWidth = static_cast<GLsizei>(lutSize * lutSize);
const GLsizei atlasHeight = static_cast<GLsizei>(lutSize);
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, atlasWidth, atlasHeight, 0, GL_RGBA, GL_FLOAT, values.data());
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
}
bool LoadTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error)
{
textureId = 0;
if (LowercaseExtension(textureAsset.path) == ".cube")
return LoadCubeTextureAsset(textureAsset, textureId, error);
HRESULT comInitResult = CoInitializeEx(NULL, COINIT_MULTITHREADED);
const bool shouldUninitializeCom = (comInitResult == S_OK || comInitResult == S_FALSE);
if (FAILED(comInitResult) && comInitResult != RPC_E_CHANGED_MODE)
{
error = "Could not initialize COM to load shader texture assets.";
return false;
}
CComPtr<IWICImagingFactory> imagingFactory;
HRESULT result = CoCreateInstance(CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&imagingFactory));
if (FAILED(result) || !imagingFactory)
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not create a WIC imaging factory to load shader texture assets.";
return false;
}
CComPtr<IWICBitmapDecoder> bitmapDecoder;
result = imagingFactory->CreateDecoderFromFilename(textureAsset.path.wstring().c_str(), NULL, GENERIC_READ, WICDecodeMetadataCacheOnLoad, &bitmapDecoder);
if (FAILED(result) || !bitmapDecoder)
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not open shader texture asset: " + textureAsset.path.string();
return false;
}
CComPtr<IWICBitmapFrameDecode> bitmapFrame;
result = bitmapDecoder->GetFrame(0, &bitmapFrame);
if (FAILED(result) || !bitmapFrame)
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not decode the first frame of shader texture asset: " + textureAsset.path.string();
return false;
}
CComPtr<IWICFormatConverter> formatConverter;
result = imagingFactory->CreateFormatConverter(&formatConverter);
if (FAILED(result) || !formatConverter)
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not create a WIC format converter for shader texture asset: " + textureAsset.path.string();
return false;
}
result = formatConverter->Initialize(bitmapFrame, GUID_WICPixelFormat32bppBGRA, WICBitmapDitherTypeNone, NULL, 0.0, WICBitmapPaletteTypeCustom);
if (FAILED(result))
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not convert shader texture asset to BGRA: " + textureAsset.path.string();
return false;
}
UINT width = 0;
UINT height = 0;
result = formatConverter->GetSize(&width, &height);
if (FAILED(result) || width == 0 || height == 0)
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Shader texture asset has an invalid size: " + textureAsset.path.string();
return false;
}
const UINT stride = width * 4;
std::vector<unsigned char> pixels(static_cast<std::size_t>(stride) * static_cast<std::size_t>(height));
result = formatConverter->CopyPixels(NULL, stride, static_cast<UINT>(pixels.size()), pixels.data());
if (FAILED(result))
{
if (shouldUninitializeCom)
CoUninitialize();
error = "Could not read shader texture pixels: " + textureAsset.path.string();
return false;
}
std::vector<unsigned char> flippedPixels(pixels.size());
for (UINT row = 0; row < height; ++row)
{
const std::size_t srcOffset = static_cast<std::size_t>(row) * stride;
const std::size_t dstOffset = static_cast<std::size_t>(height - 1 - row) * stride;
std::memcpy(flippedPixels.data() + dstOffset, pixels.data() + srcOffset, stride);
}
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, static_cast<GLsizei>(width), static_cast<GLsizei>(height), 0, GL_BGRA, GL_UNSIGNED_BYTE, flippedPixels.data());
glBindTexture(GL_TEXTURE_2D, 0);
if (shouldUninitializeCom)
CoUninitialize();
return true;
}

11
apps/LoopThroughWithOpenGLCompositing/gl/shader/TextureAssetLoader.h
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@@ -1,11 +0,0 @@
#pragma once
#include "GLExtensions.h"
#include "ShaderTypes.h"
#include <windows.h>
#include <gl/gl.h>
#include <string>
bool LoadTextureAsset(const ShaderTextureAsset& textureAsset, GLuint& textureId, std::string& error);

45
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeClock.cpp
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@@ -1,45 +0,0 @@
#include "RuntimeClock.h"
#include <chrono>
namespace
{
bool ToUtcTime(std::time_t time, std::tm& utcTime)
{
return gmtime_s(&utcTime, &time) == 0;
}
bool ToLocalTime(std::time_t time, std::tm& localTime)
{
return localtime_s(&localTime, &time) == 0;
}
}
RuntimeClockSnapshot GetRuntimeClockSnapshot()
{
return MakeRuntimeClockSnapshot(std::chrono::system_clock::to_time_t(std::chrono::system_clock::now()));
}
RuntimeClockSnapshot MakeRuntimeClockSnapshot(std::time_t now)
{
RuntimeClockSnapshot snapshot;
std::tm utcTime = {};
if (!ToUtcTime(now, utcTime))
return snapshot;
snapshot.utcTimeSeconds =
static_cast<double>(utcTime.tm_hour * 3600 + utcTime.tm_min * 60 + utcTime.tm_sec);
std::tm localTime = {};
if (!ToLocalTime(now, localTime))
return snapshot;
utcTime.tm_isdst = localTime.tm_isdst;
const std::time_t localAsTime = std::mktime(&localTime);
const std::time_t utcAsLocalTime = std::mktime(&utcTime);
if (localAsTime != static_cast<std::time_t>(-1) && utcAsLocalTime != static_cast<std::time_t>(-1))
snapshot.utcOffsetSeconds = std::difftime(localAsTime, utcAsLocalTime);
return snapshot;
}

12
apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeClock.h
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@@ -1,12 +0,0 @@
#pragma once
#include <ctime>
struct RuntimeClockSnapshot
{
double utcTimeSeconds = 0.0;
double utcOffsetSeconds = 0.0;
};
RuntimeClockSnapshot GetRuntimeClockSnapshot();
RuntimeClockSnapshot MakeRuntimeClockSnapshot(std::time_t now);

159
apps/LoopThroughWithOpenGLCompositing/videoio/VideoIOFormat.cpp
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@@ -1,159 +0,0 @@
#include "VideoIOFormat.h"
#include <algorithm>
#include <cmath>
#ifdef min
#undef min
#endif
#ifdef max
#undef max
#endif
namespace
{
uint16_t Clamp10(int value, int minimum, int maximum)
{
return static_cast<uint16_t>(std::max(minimum, std::min(maximum, value)));
}
uint32_t MakeV210Word(uint16_t a, uint16_t b, uint16_t c)
{
return (static_cast<uint32_t>(a) & 0x3ffu)
| ((static_cast<uint32_t>(b) & 0x3ffu) << 10)
| ((static_cast<uint32_t>(c) & 0x3ffu) << 20);
}
void StoreWord(std::array<uint8_t, 16>& bytes, std::size_t wordIndex, uint32_t word)
{
const std::size_t offset = wordIndex * 4;
bytes[offset + 0] = static_cast<uint8_t>(word & 0xffu);
bytes[offset + 1] = static_cast<uint8_t>((word >> 8) & 0xffu);
bytes[offset + 2] = static_cast<uint8_t>((word >> 16) & 0xffu);
bytes[offset + 3] = static_cast<uint8_t>((word >> 24) & 0xffu);
}
uint32_t LoadWord(const std::array<uint8_t, 16>& bytes, std::size_t wordIndex)
{
const std::size_t offset = wordIndex * 4;
return static_cast<uint32_t>(bytes[offset + 0])
| (static_cast<uint32_t>(bytes[offset + 1]) << 8)
| (static_cast<uint32_t>(bytes[offset + 2]) << 16)
| (static_cast<uint32_t>(bytes[offset + 3]) << 24);
}
uint16_t Component(uint32_t word, unsigned index)
{
return static_cast<uint16_t>((word >> (index * 10)) & 0x3ffu);
}
}
const char* VideoIOPixelFormatName(VideoIOPixelFormat format)
{
switch (format)
{
case VideoIOPixelFormat::V210:
return "10-bit YUV v210";
case VideoIOPixelFormat::Bgra8:
return "8-bit BGRA";
case VideoIOPixelFormat::Uyvy8:
default:
return "8-bit YUV UYVY";
}
}
bool VideoIOPixelFormatIsTenBit(VideoIOPixelFormat format)
{
return format == VideoIOPixelFormat::V210;
}
VideoIOPixelFormat ChoosePreferredVideoIOFormat(bool tenBitSupported)
{
return tenBitSupported ? VideoIOPixelFormat::V210 : VideoIOPixelFormat::Uyvy8;
}
unsigned VideoIOBytesPerPixel(VideoIOPixelFormat format)
{
switch (format)
{
case VideoIOPixelFormat::Uyvy8:
return 2u;
case VideoIOPixelFormat::Bgra8:
return 4u;
case VideoIOPixelFormat::V210:
default:
return 0u;
}
}
unsigned VideoIORowBytes(VideoIOPixelFormat format, unsigned frameWidth)
{
if (format == VideoIOPixelFormat::V210)
return MinimumV210RowBytes(frameWidth);
return frameWidth * VideoIOBytesPerPixel(format);
}
unsigned PackedTextureWidthFromRowBytes(unsigned rowBytes)
{
return (rowBytes + 3u) / 4u;
}
unsigned MinimumV210RowBytes(unsigned frameWidth)
{
return ((frameWidth + 5u) / 6u) * 16u;
}
unsigned ActiveV210WordsForWidth(unsigned frameWidth)
{
return ((frameWidth + 5u) / 6u) * 4u;
}
V210CodeValues Rec709RgbToLegalV210(float red, float green, float blue)
{
red = std::max(0.0f, std::min(1.0f, red));
green = std::max(0.0f, std::min(1.0f, green));
blue = std::max(0.0f, std::min(1.0f, blue));
const float y = 0.2126f * red + 0.7152f * green + 0.0722f * blue;
const float cb = (blue - y) / 1.8556f + 0.5f;
const float cr = (red - y) / 1.5748f + 0.5f;
V210CodeValues values;
values.y = Clamp10(static_cast<int>(std::lround(64.0f + y * 876.0f)), 64, 940);
values.cb = Clamp10(static_cast<int>(std::lround(64.0f + cb * 896.0f)), 64, 960);
values.cr = Clamp10(static_cast<int>(std::lround(64.0f + cr * 896.0f)), 64, 960);
return values;
}
std::array<uint8_t, 16> PackV210Block(const V210SixPixelBlock& block)
{
std::array<uint8_t, 16> bytes = {};
StoreWord(bytes, 0, MakeV210Word(block.cb[0], block.y[0], block.cr[0]));
StoreWord(bytes, 1, MakeV210Word(block.y[1], block.cb[1], block.y[2]));
StoreWord(bytes, 2, MakeV210Word(block.cr[1], block.y[3], block.cb[2]));
StoreWord(bytes, 3, MakeV210Word(block.y[4], block.cr[2], block.y[5]));
return bytes;
}
V210SixPixelBlock UnpackV210Block(const std::array<uint8_t, 16>& bytes)
{
const uint32_t word0 = LoadWord(bytes, 0);
const uint32_t word1 = LoadWord(bytes, 1);
const uint32_t word2 = LoadWord(bytes, 2);
const uint32_t word3 = LoadWord(bytes, 3);
V210SixPixelBlock block;
block.cb[0] = Component(word0, 0);
block.y[0] = Component(word0, 1);
block.cr[0] = Component(word0, 2);
block.y[1] = Component(word1, 0);
block.cb[1] = Component(word1, 1);
block.y[2] = Component(word1, 2);
block.cr[1] = Component(word2, 0);
block.y[3] = Component(word2, 1);
block.cb[2] = Component(word2, 2);
block.y[4] = Component(word3, 0);
block.cr[2] = Component(word3, 1);
block.y[5] = Component(word3, 2);
return block;
}

37
apps/LoopThroughWithOpenGLCompositing/videoio/VideoIOFormat.h
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@@ -1,37 +0,0 @@
#pragma once
#include <array>
#include <cstdint>
enum class VideoIOPixelFormat
{
Uyvy8,
V210,
Bgra8
};
struct V210CodeValues
{
uint16_t y = 64;
uint16_t cb = 512;
uint16_t cr = 512;
};
struct V210SixPixelBlock
{
std::array<uint16_t, 6> y = {};
std::array<uint16_t, 3> cb = {};
std::array<uint16_t, 3> cr = {};
};
const char* VideoIOPixelFormatName(VideoIOPixelFormat format);
bool VideoIOPixelFormatIsTenBit(VideoIOPixelFormat format);
VideoIOPixelFormat ChoosePreferredVideoIOFormat(bool tenBitSupported);
unsigned VideoIOBytesPerPixel(VideoIOPixelFormat format);
unsigned VideoIORowBytes(VideoIOPixelFormat format, unsigned frameWidth);
unsigned PackedTextureWidthFromRowBytes(unsigned rowBytes);
unsigned MinimumV210RowBytes(unsigned frameWidth);
unsigned ActiveV210WordsForWidth(unsigned frameWidth);
V210CodeValues Rec709RgbToLegalV210(float red, float green, float blue);
std::array<uint8_t, 16> PackV210Block(const V210SixPixelBlock& block);
V210SixPixelBlock UnpackV210Block(const std::array<uint8_t, 16>& bytes);

137
apps/LoopThroughWithOpenGLCompositing/videoio/VideoIOTypes.h
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@@ -1,137 +0,0 @@
#pragma once
#include "DeckLinkDisplayMode.h"
#include "VideoIOFormat.h"
#include <cstdint>
#include <functional>
#include <string>
enum class VideoIOBackend
{
DeckLink
};
enum class VideoIOCompletionResult
{
Completed,
DisplayedLate,
Dropped,
Flushed,
Unknown
};
struct VideoIOConfig
{
VideoFormatSelection videoModes;
bool externalKeyingEnabled = false;
bool preferTenBit = true;
};
struct VideoIOState
{
FrameSize inputFrameSize;
FrameSize outputFrameSize;
VideoIOPixelFormat inputPixelFormat = VideoIOPixelFormat::Uyvy8;
VideoIOPixelFormat outputPixelFormat = VideoIOPixelFormat::Bgra8;
unsigned inputFrameRowBytes = 0;
unsigned outputFrameRowBytes = 0;
unsigned captureTextureWidth = 0;
unsigned outputPackTextureWidth = 0;
std::string inputDisplayModeName = "1080p59.94";
std::string outputDisplayModeName = "1080p59.94";
std::string outputModelName;
std::string statusMessage;
std::string formatStatusMessage;
bool hasInputDevice = false;
bool hasInputSource = false;
bool supportsInternalKeying = false;
bool supportsExternalKeying = false;
bool keyerInterfaceAvailable = false;
bool externalKeyingActive = false;
double frameBudgetMilliseconds = 0.0;
};
struct VideoIOFrame
{
void* bytes = nullptr;
long rowBytes = 0;
unsigned width = 0;
unsigned height = 0;
VideoIOPixelFormat pixelFormat = VideoIOPixelFormat::Uyvy8;
bool hasNoInputSource = false;
};
struct VideoIOOutputFrame
{
void* bytes = nullptr;
long rowBytes = 0;
unsigned width = 0;
unsigned height = 0;
VideoIOPixelFormat pixelFormat = VideoIOPixelFormat::Bgra8;
void* nativeFrame = nullptr;
void* nativeBuffer = nullptr;
};
struct VideoIOCompletion
{
VideoIOCompletionResult result = VideoIOCompletionResult::Completed;
};
struct VideoIOScheduleTime
{
int64_t streamTime = 0;
int64_t duration = 0;
int64_t timeScale = 0;
uint64_t frameIndex = 0;
};
class VideoIODevice
{
public:
using InputFrameCallback = std::function<void(const VideoIOFrame&)>;
using OutputFrameCallback = std::function<void(const VideoIOCompletion&)>;
virtual ~VideoIODevice() = default;
virtual void ReleaseResources() = 0;
virtual bool DiscoverDevicesAndModes(const VideoFormatSelection& videoModes, std::string& error) = 0;
virtual bool SelectPreferredFormats(const VideoFormatSelection& videoModes, std::string& error) = 0;
virtual bool ConfigureInput(InputFrameCallback callback, const VideoFormat& inputVideoMode, std::string& error) = 0;
virtual bool ConfigureOutput(OutputFrameCallback callback, const VideoFormat& outputVideoMode, bool externalKeyingEnabled, std::string& error) = 0;
virtual bool Start() = 0;
virtual bool Stop() = 0;
virtual const VideoIOState& State() const = 0;
virtual VideoIOState& MutableState() = 0;
virtual bool BeginOutputFrame(VideoIOOutputFrame& frame) = 0;
virtual void EndOutputFrame(VideoIOOutputFrame& frame) = 0;
virtual bool ScheduleOutputFrame(const VideoIOOutputFrame& frame) = 0;
virtual void AccountForCompletionResult(VideoIOCompletionResult result) = 0;
bool HasInputDevice() const { return State().hasInputDevice; }
bool HasInputSource() const { return State().hasInputSource; }
bool InputOutputDimensionsDiffer() const { return State().inputFrameSize != State().outputFrameSize; }
const FrameSize& InputFrameSize() const { return State().inputFrameSize; }
const FrameSize& OutputFrameSize() const { return State().outputFrameSize; }
unsigned InputFrameWidth() const { return State().inputFrameSize.width; }
unsigned InputFrameHeight() const { return State().inputFrameSize.height; }
unsigned OutputFrameWidth() const { return State().outputFrameSize.width; }
unsigned OutputFrameHeight() const { return State().outputFrameSize.height; }
VideoIOPixelFormat InputPixelFormat() const { return State().inputPixelFormat; }
VideoIOPixelFormat OutputPixelFormat() const { return State().outputPixelFormat; }
bool InputIsTenBit() const { return VideoIOPixelFormatIsTenBit(State().inputPixelFormat); }
bool OutputIsTenBit() const { return VideoIOPixelFormatIsTenBit(State().outputPixelFormat); }
unsigned InputFrameRowBytes() const { return State().inputFrameRowBytes; }
unsigned OutputFrameRowBytes() const { return State().outputFrameRowBytes; }
unsigned CaptureTextureWidth() const { return State().captureTextureWidth; }
unsigned OutputPackTextureWidth() const { return State().outputPackTextureWidth; }
const std::string& FormatStatusMessage() const { return State().formatStatusMessage; }
const std::string& InputDisplayModeName() const { return State().inputDisplayModeName; }
const std::string& OutputModelName() const { return State().outputModelName; }
bool SupportsInternalKeying() const { return State().supportsInternalKeying; }
bool SupportsExternalKeying() const { return State().supportsExternalKeying; }
bool KeyerInterfaceAvailable() const { return State().keyerInterfaceAvailable; }
bool ExternalKeyingActive() const { return State().externalKeyingActive; }
const std::string& StatusMessage() const { return State().statusMessage; }
double FrameBudgetMilliseconds() const { return State().frameBudgetMilliseconds; }
void SetStatusMessage(const std::string& message) { MutableState().statusMessage = message; }
};

37
apps/LoopThroughWithOpenGLCompositing/videoio/VideoPlayoutScheduler.cpp
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@@ -1,37 +0,0 @@
#include "VideoPlayoutScheduler.h"
void VideoPlayoutScheduler::Configure(int64_t frameDuration, int64_t timeScale)
{
mFrameDuration = frameDuration;
mTimeScale = timeScale;
Reset();
}
void VideoPlayoutScheduler::Reset()
{
mScheduledFrameIndex = 0;
}
VideoIOScheduleTime VideoPlayoutScheduler::NextScheduleTime()
{
VideoIOScheduleTime time;
time.streamTime = static_cast<int64_t>(mScheduledFrameIndex) * mFrameDuration;
time.duration = mFrameDuration;
time.timeScale = mTimeScale;
time.frameIndex = mScheduledFrameIndex;
++mScheduledFrameIndex;
return time;
}
void VideoPlayoutScheduler::AccountForCompletionResult(VideoIOCompletionResult result)
{
if (result == VideoIOCompletionResult::DisplayedLate || result == VideoIOCompletionResult::Dropped)
mScheduledFrameIndex += 2;
}
double VideoPlayoutScheduler::FrameBudgetMilliseconds() const
{
return mTimeScale != 0
? (static_cast<double>(mFrameDuration) * 1000.0) / static_cast<double>(mTimeScale)
: 0.0;
}

22
apps/LoopThroughWithOpenGLCompositing/videoio/VideoPlayoutScheduler.h
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@@ -1,22 +0,0 @@
#pragma once
#include "VideoIOTypes.h"
#include <cstdint>
class VideoPlayoutScheduler
{
public:
void Configure(int64_t frameDuration, int64_t timeScale);
void Reset();
VideoIOScheduleTime NextScheduleTime();
void AccountForCompletionResult(VideoIOCompletionResult result);
double FrameBudgetMilliseconds() const;
uint64_t ScheduledFrameIndex() const { return mScheduledFrameIndex; }
int64_t TimeScale() const { return mTimeScale; }
private:
int64_t mFrameDuration = 0;
int64_t mTimeScale = 0;
uint64_t mScheduledFrameIndex = 0;
};

146
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkDisplayMode.cpp
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@@ -1,146 +0,0 @@
#include "DeckLinkDisplayMode.h"
#include <cctype>
std::string NormalizeModeToken(const std::string& value)
{
std::string normalized;
for (unsigned char ch : value)
{
if (std::isalnum(ch))
normalized.push_back(static_cast<char>(std::tolower(ch)));
}
return normalized;
}
bool ResolveConfiguredDisplayMode(const std::string& videoFormat, const std::string& frameRate, BMDDisplayMode& displayMode, std::string& displayModeName)
{
VideoFormat videoMode;
if (!ResolveConfiguredVideoFormat(videoFormat, frameRate, videoMode))
return false;
displayMode = videoMode.displayMode;
displayModeName = videoMode.displayName;
return true;
}
bool ResolveConfiguredVideoFormat(const std::string& videoFormat, const std::string& frameRate, VideoFormat& videoMode)
{
const std::string formatToken = NormalizeModeToken(videoFormat);
const std::string frameToken = NormalizeModeToken(frameRate);
const std::string combinedToken = formatToken + frameToken;
struct ModeOption
{
const char* token;
BMDDisplayMode mode;
const char* displayName;
};
static const ModeOption options[] =
{
{ "720p50", bmdModeHD720p50, "720p50" },
{ "hd720p50", bmdModeHD720p50, "720p50" },
{ "720p5994", bmdModeHD720p5994, "720p59.94" },
{ "hd720p5994", bmdModeHD720p5994, "720p59.94" },
{ "720p60", bmdModeHD720p60, "720p60" },
{ "hd720p60", bmdModeHD720p60, "720p60" },
{ "1080i50", bmdModeHD1080i50, "1080i50" },
{ "hd1080i50", bmdModeHD1080i50, "1080i50" },
{ "1080i5994", bmdModeHD1080i5994, "1080i59.94" },
{ "hd1080i5994", bmdModeHD1080i5994, "1080i59.94" },
{ "1080i60", bmdModeHD1080i6000, "1080i60" },
{ "hd1080i60", bmdModeHD1080i6000, "1080i60" },
{ "1080p2398", bmdModeHD1080p2398, "1080p23.98" },
{ "hd1080p2398", bmdModeHD1080p2398, "1080p23.98" },
{ "1080p24", bmdModeHD1080p24, "1080p24" },
{ "hd1080p24", bmdModeHD1080p24, "1080p24" },
{ "1080p25", bmdModeHD1080p25, "1080p25" },
{ "hd1080p25", bmdModeHD1080p25, "1080p25" },
{ "1080p2997", bmdModeHD1080p2997, "1080p29.97" },
{ "hd1080p2997", bmdModeHD1080p2997, "1080p29.97" },
{ "1080p30", bmdModeHD1080p30, "1080p30" },
{ "hd1080p30", bmdModeHD1080p30, "1080p30" },
{ "1080p50", bmdModeHD1080p50, "1080p50" },
{ "hd1080p50", bmdModeHD1080p50, "1080p50" },
{ "1080p5994", bmdModeHD1080p5994, "1080p59.94" },
{ "hd1080p5994", bmdModeHD1080p5994, "1080p59.94" },
{ "1080p60", bmdModeHD1080p6000, "1080p60" },
{ "hd1080p60", bmdModeHD1080p6000, "1080p60" },
{ "2160p2398", bmdMode4K2160p2398, "2160p23.98" },
{ "4k2160p2398", bmdMode4K2160p2398, "2160p23.98" },
{ "2160p24", bmdMode4K2160p24, "2160p24" },
{ "4k2160p24", bmdMode4K2160p24, "2160p24" },
{ "2160p25", bmdMode4K2160p25, "2160p25" },
{ "4k2160p25", bmdMode4K2160p25, "2160p25" },
{ "2160p2997", bmdMode4K2160p2997, "2160p29.97" },
{ "4k2160p2997", bmdMode4K2160p2997, "2160p29.97" },
{ "2160p30", bmdMode4K2160p30, "2160p30" },
{ "4k2160p30", bmdMode4K2160p30, "2160p30" },
{ "2160p50", bmdMode4K2160p50, "2160p50" },
{ "4k2160p50", bmdMode4K2160p50, "2160p50" },
{ "2160p5994", bmdMode4K2160p5994, "2160p59.94" },
{ "4k2160p5994", bmdMode4K2160p5994, "2160p59.94" },
{ "2160p60", bmdMode4K2160p60, "2160p60" },
{ "4k2160p60", bmdMode4K2160p60, "2160p60" }
};
for (const ModeOption& option : options)
{
if (combinedToken == option.token || (frameToken.empty() && formatToken == option.token))
{
videoMode.displayMode = option.mode;
videoMode.displayName = option.displayName;
return true;
}
}
return false;
}
bool ResolveConfiguredVideoFormats(
const std::string& inputVideoFormat,
const std::string& inputFrameRate,
const std::string& outputVideoFormat,
const std::string& outputFrameRate,
VideoFormatSelection& videoModes,
std::string& error)
{
if (!ResolveConfiguredVideoFormat(inputVideoFormat, inputFrameRate, videoModes.input))
{
error = "Unsupported DeckLink inputVideoFormat/inputFrameRate in config/runtime-host.json: " +
inputVideoFormat + " / " + inputFrameRate;
return false;
}
if (!ResolveConfiguredVideoFormat(outputVideoFormat, outputFrameRate, videoModes.output))
{
error = "Unsupported DeckLink outputVideoFormat/outputFrameRate in config/runtime-host.json: " +
outputVideoFormat + " / " + outputFrameRate;
return false;
}
return true;
}
bool FindDeckLinkDisplayMode(IDeckLinkDisplayModeIterator* iterator, BMDDisplayMode targetMode, IDeckLinkDisplayMode** foundMode)
{
if (!iterator || !foundMode)
return false;
*foundMode = NULL;
IDeckLinkDisplayMode* candidate = NULL;
while (iterator->Next(&candidate) == S_OK)
{
if (candidate->GetDisplayMode() == targetMode)
{
*foundMode = candidate;
return true;
}
candidate->Release();
candidate = NULL;
}
return false;
}

47
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkDisplayMode.h
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@@ -1,47 +0,0 @@
#pragma once
#include "DeckLinkAPI_h.h"
#include <string>
struct FrameSize
{
unsigned width = 0;
unsigned height = 0;
bool IsEmpty() const { return width == 0 || height == 0; }
};
inline bool operator==(const FrameSize& left, const FrameSize& right)
{
return left.width == right.width && left.height == right.height;
}
inline bool operator!=(const FrameSize& left, const FrameSize& right)
{
return !(left == right);
}
struct VideoFormat
{
BMDDisplayMode displayMode = bmdModeHD1080p5994;
std::string displayName = "1080p59.94";
};
struct VideoFormatSelection
{
VideoFormat input;
VideoFormat output;
};
std::string NormalizeModeToken(const std::string& value);
bool ResolveConfiguredDisplayMode(const std::string& videoFormat, const std::string& frameRate, BMDDisplayMode& displayMode, std::string& displayModeName);
bool ResolveConfiguredVideoFormat(const std::string& videoFormat, const std::string& frameRate, VideoFormat& videoMode);
bool ResolveConfiguredVideoFormats(
const std::string& inputVideoFormat,
const std::string& inputFrameRate,
const std::string& outputVideoFormat,
const std::string& outputFrameRate,
VideoFormatSelection& videoModes,
std::string& error);
bool FindDeckLinkDisplayMode(IDeckLinkDisplayModeIterator* iterator, BMDDisplayMode targetMode, IDeckLinkDisplayMode** foundMode);

104
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkFrameTransfer.cpp
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@@ -1,104 +0,0 @@
#include "DeckLinkFrameTransfer.h"
#include "DeckLinkSession.h"
////////////////////////////////////////////
// DeckLink Capture Delegate Class
////////////////////////////////////////////
CaptureDelegate::CaptureDelegate(DeckLinkSession* pOwner) :
m_pOwner(pOwner),
mRefCount(1)
{
}
HRESULT CaptureDelegate::QueryInterface(REFIID, LPVOID* ppv)
{
*ppv = NULL;
return E_NOINTERFACE;
}
ULONG CaptureDelegate::AddRef()
{
return InterlockedIncrement(&mRefCount);
}
ULONG CaptureDelegate::Release()
{
int newCount = InterlockedDecrement(&mRefCount);
if (newCount == 0)
delete this;
return newCount;
}
HRESULT CaptureDelegate::VideoInputFrameArrived(IDeckLinkVideoInputFrame* inputFrame, IDeckLinkAudioInputPacket*)
{
if (!inputFrame)
{
// It's possible to receive a NULL inputFrame, but a valid audioPacket. Ignore audio-only frame.
return S_OK;
}
bool hasNoInputSource = (inputFrame->GetFlags() & bmdFrameHasNoInputSource) == bmdFrameHasNoInputSource;
m_pOwner->HandleVideoInputFrame(inputFrame, hasNoInputSource);
return S_OK;
}
HRESULT CaptureDelegate::VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags)
{
return S_OK;
}
////////////////////////////////////////////
// DeckLink Playout Delegate Class
////////////////////////////////////////////
PlayoutDelegate::PlayoutDelegate(DeckLinkSession* pOwner) :
m_pOwner(pOwner),
mRefCount(1)
{
}
HRESULT PlayoutDelegate::QueryInterface(REFIID, LPVOID* ppv)
{
*ppv = NULL;
return E_NOINTERFACE;
}
ULONG PlayoutDelegate::AddRef()
{
return InterlockedIncrement(&mRefCount);
}
ULONG PlayoutDelegate::Release()
{
int newCount = InterlockedDecrement(&mRefCount);
if (newCount == 0)
delete this;
return newCount;
}
HRESULT PlayoutDelegate::ScheduledFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result)
{
switch (result)
{
case bmdOutputFrameDisplayedLate:
OutputDebugStringA("ScheduledFrameCompleted() frame did not complete: Frame Displayed Late\n");
break;
case bmdOutputFrameDropped:
OutputDebugStringA("ScheduledFrameCompleted() frame did not complete: Frame Dropped\n");
break;
case bmdOutputFrameCompleted:
case bmdOutputFrameFlushed:
// Don't log bmdOutputFrameFlushed result since it is expected when Stop() is called
break;
default:
OutputDebugStringA("ScheduledFrameCompleted() frame did not complete: Unknown error\n");
}
m_pOwner->HandlePlayoutFrameCompleted(completedFrame, result);
return S_OK;
}
HRESULT PlayoutDelegate::ScheduledPlaybackHasStopped()
{
return S_OK;
}

49
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkFrameTransfer.h
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@@ -1,49 +0,0 @@
#pragma once
#include <windows.h>
#include <atomic>
#include "DeckLinkAPI_h.h"
class DeckLinkSession;
////////////////////////////////////////////
// Capture Delegate Class
////////////////////////////////////////////
class CaptureDelegate : public IDeckLinkInputCallback
{
DeckLinkSession* m_pOwner;
LONG mRefCount;
public:
CaptureDelegate(DeckLinkSession* pOwner);
// IUnknown needs only a dummy implementation
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID* ppv);
virtual ULONG STDMETHODCALLTYPE AddRef();
virtual ULONG STDMETHODCALLTYPE Release();
virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioPacket);
virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents notificationEvents, IDeckLinkDisplayMode* newDisplayMode, BMDDetectedVideoInputFormatFlags detectedSignalFlags);
};
////////////////////////////////////////////
// Render Delegate Class
////////////////////////////////////////////
class PlayoutDelegate : public IDeckLinkVideoOutputCallback
{
DeckLinkSession* m_pOwner;
LONG mRefCount;
public:
PlayoutDelegate(DeckLinkSession* pOwner);
// IUnknown needs only a dummy implementation
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID* ppv);
virtual ULONG STDMETHODCALLTYPE AddRef();
virtual ULONG STDMETHODCALLTYPE Release();
virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result);
virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped();
};

614
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkSession.cpp
View File

@@ -1,614 +0,0 @@
#include "DeckLinkSession.h"
#include "GlRenderConstants.h"
#include <atlbase.h>
#include <cstdio>
#include <cstring>
#include <new>
#include <sstream>
#include <utility>
#include <vector>
namespace
{
std::string BstrToUtf8(BSTR value)
{
if (value == nullptr)
return std::string();
const int requiredBytes = WideCharToMultiByte(CP_UTF8, 0, value, -1, NULL, 0, NULL, NULL);
if (requiredBytes <= 1)
return std::string();
std::vector<char> utf8Name(static_cast<std::size_t>(requiredBytes), '\0');
if (WideCharToMultiByte(CP_UTF8, 0, value, -1, utf8Name.data(), requiredBytes, NULL, NULL) <= 0)
return std::string();
return std::string(utf8Name.data());
}
bool InputSupportsFormat(IDeckLinkInput* input, BMDDisplayMode displayMode, BMDPixelFormat pixelFormat)
{
if (input == nullptr)
return false;
BOOL supported = FALSE;
BMDDisplayMode actualMode = bmdModeUnknown;
const HRESULT result = input->DoesSupportVideoMode(
bmdVideoConnectionUnspecified,
displayMode,
pixelFormat,
bmdNoVideoInputConversion,
bmdSupportedVideoModeDefault,
&actualMode,
&supported);
return result == S_OK && supported != FALSE;
}
bool OutputSupportsFormat(IDeckLinkOutput* output, BMDDisplayMode displayMode, BMDPixelFormat pixelFormat)
{
if (output == nullptr)
return false;
BOOL supported = FALSE;
BMDDisplayMode actualMode = bmdModeUnknown;
const HRESULT result = output->DoesSupportVideoMode(
bmdVideoConnectionUnspecified,
displayMode,
pixelFormat,
bmdNoVideoOutputConversion,
bmdSupportedVideoModeDefault,
&actualMode,
&supported);
return result == S_OK && supported != FALSE;
}
}
DeckLinkSession::~DeckLinkSession()
{
ReleaseResources();
}
void DeckLinkSession::ReleaseResources()
{
if (input != nullptr)
input->SetCallback(nullptr);
captureDelegate.Release();
input.Release();
if (output != nullptr)
output->SetScheduledFrameCompletionCallback(nullptr);
if (keyer != nullptr)
{
keyer->Disable();
mState.externalKeyingActive = false;
}
keyer.Release();
playoutDelegate.Release();
outputVideoFrameQueue.clear();
output.Release();
}
bool DeckLinkSession::DiscoverDevicesAndModes(const VideoFormatSelection& videoModes, std::string& error)
{
CComPtr<IDeckLinkIterator> deckLinkIterator;
CComPtr<IDeckLinkDisplayMode> inputMode;
CComPtr<IDeckLinkDisplayMode> outputMode;
mState.inputDisplayModeName = videoModes.input.displayName;
mState.outputDisplayModeName = videoModes.output.displayName;
HRESULT result = CoCreateInstance(CLSID_CDeckLinkIterator, nullptr, CLSCTX_ALL, IID_IDeckLinkIterator, reinterpret_cast<void**>(&deckLinkIterator));
if (FAILED(result))
{
error = "Please install the Blackmagic DeckLink drivers to use the features of this application.";
return false;
}
CComPtr<IDeckLink> deckLink;
while (deckLinkIterator->Next(&deckLink) == S_OK)
{
int64_t duplexMode;
bool deviceSupportsInternalKeying = false;
bool deviceSupportsExternalKeying = false;
std::string modelName;
CComPtr<IDeckLinkProfileAttributes> deckLinkAttributes;
if (deckLink->QueryInterface(IID_IDeckLinkProfileAttributes, (void**)&deckLinkAttributes) != S_OK)
{
printf("Could not obtain the IDeckLinkProfileAttributes interface\n");
deckLink.Release();
continue;
}
result = deckLinkAttributes->GetInt(BMDDeckLinkDuplex, &duplexMode);
BOOL attributeFlag = FALSE;
if (deckLinkAttributes->GetFlag(BMDDeckLinkSupportsInternalKeying, &attributeFlag) == S_OK)
deviceSupportsInternalKeying = (attributeFlag != FALSE);
attributeFlag = FALSE;
if (deckLinkAttributes->GetFlag(BMDDeckLinkSupportsExternalKeying, &attributeFlag) == S_OK)
deviceSupportsExternalKeying = (attributeFlag != FALSE);
CComBSTR modelNameBstr;
if (deckLinkAttributes->GetString(BMDDeckLinkModelName, &modelNameBstr) == S_OK)
modelName = BstrToUtf8(modelNameBstr);
if (result != S_OK || duplexMode == bmdDuplexInactive)
{
deckLink.Release();
continue;
}
bool inputUsed = false;
if (!input && deckLink->QueryInterface(IID_IDeckLinkInput, (void**)&input) == S_OK)
inputUsed = true;
if (!output && (!inputUsed || (duplexMode == bmdDuplexFull)))
{
if (deckLink->QueryInterface(IID_IDeckLinkOutput, (void**)&output) != S_OK)
output.Release();
else
{
mState.outputModelName = modelName;
mState.supportsInternalKeying = deviceSupportsInternalKeying;
mState.supportsExternalKeying = deviceSupportsExternalKeying;
}
}
deckLink.Release();
if (output && input)
break;
}
if (!output)
{
error = "Expected an Output DeckLink device";
ReleaseResources();
return false;
}
CComPtr<IDeckLinkDisplayModeIterator> inputDisplayModeIterator;
if (input && input->GetDisplayModeIterator(&inputDisplayModeIterator) != S_OK)
{
error = "Cannot get input Display Mode Iterator.";
ReleaseResources();
return false;
}
if (input && !FindDeckLinkDisplayMode(inputDisplayModeIterator, videoModes.input.displayMode, &inputMode))
{
error = "Cannot get specified input BMDDisplayMode for configured mode: " + videoModes.input.displayName;
ReleaseResources();
return false;
}
inputDisplayModeIterator.Release();
CComPtr<IDeckLinkDisplayModeIterator> outputDisplayModeIterator;
if (output->GetDisplayModeIterator(&outputDisplayModeIterator) != S_OK)
{
error = "Cannot get output Display Mode Iterator.";
ReleaseResources();
return false;
}
if (!FindDeckLinkDisplayMode(outputDisplayModeIterator, videoModes.output.displayMode, &outputMode))
{
error = "Cannot get specified output BMDDisplayMode for configured mode: " + videoModes.output.displayName;
ReleaseResources();
return false;
}
mState.outputFrameSize = { static_cast<unsigned>(outputMode->GetWidth()), static_cast<unsigned>(outputMode->GetHeight()) };
mState.inputFrameSize = inputMode
? FrameSize{ static_cast<unsigned>(inputMode->GetWidth()), static_cast<unsigned>(inputMode->GetHeight()) }
: mState.outputFrameSize;
if (!input)
mState.inputDisplayModeName = "No input - black frame";
BMDTimeValue frameDuration = 0;
BMDTimeScale frameTimescale = 0;
outputMode->GetFrameRate(&frameDuration, &frameTimescale);
mScheduler.Configure(frameDuration, frameTimescale);
mState.frameBudgetMilliseconds = mScheduler.FrameBudgetMilliseconds();
mState.inputFrameRowBytes = mState.inputFrameSize.width * 2u;
mState.outputFrameRowBytes = mState.outputFrameSize.width * 4u;
mState.captureTextureWidth = mState.inputFrameSize.width / 2u;
mState.outputPackTextureWidth = mState.outputFrameSize.width;
mState.hasInputDevice = input != nullptr;
mState.hasInputSource = false;
return true;
}
bool DeckLinkSession::SelectPreferredFormats(const VideoFormatSelection& videoModes, std::string& error)
{
if (!output)
{
error = "Expected an Output DeckLink device";
return false;
}
mState.formatStatusMessage.clear();
const bool inputTenBitSupported = input != nullptr && InputSupportsFormat(input, videoModes.input.displayMode, bmdFormat10BitYUV);
mState.inputPixelFormat = input != nullptr ? ChoosePreferredVideoIOFormat(inputTenBitSupported) : VideoIOPixelFormat::Uyvy8;
if (input != nullptr && !inputTenBitSupported)
mState.formatStatusMessage += "DeckLink input does not report 10-bit YUV support for the configured mode; using 8-bit capture. ";
const bool outputTenBitSupported = OutputSupportsFormat(output, videoModes.output.displayMode, bmdFormat10BitYUV);
mState.outputPixelFormat = outputTenBitSupported ? VideoIOPixelFormat::V210 : VideoIOPixelFormat::Bgra8;
if (!outputTenBitSupported)
mState.formatStatusMessage += "DeckLink output does not report 10-bit YUV support for the configured mode; using 8-bit BGRA output. ";
int deckLinkOutputRowBytes = 0;
if (output->RowBytesForPixelFormat(DeckLinkPixelFormatForVideoIO(mState.outputPixelFormat), mState.outputFrameSize.width, &deckLinkOutputRowBytes) != S_OK)
{
error = "DeckLink output setup failed while calculating output row bytes.";
return false;
}
mState.outputFrameRowBytes = static_cast<unsigned>(deckLinkOutputRowBytes);
mState.outputPackTextureWidth = OutputIsTenBit()
? PackedTextureWidthFromRowBytes(mState.outputFrameRowBytes)
: mState.outputFrameSize.width;
if (InputIsTenBit())
{
int deckLinkInputRowBytes = 0;
if (output->RowBytesForPixelFormat(bmdFormat10BitYUV, mState.inputFrameSize.width, &deckLinkInputRowBytes) == S_OK)
mState.inputFrameRowBytes = static_cast<unsigned>(deckLinkInputRowBytes);
else
mState.inputFrameRowBytes = MinimumV210RowBytes(mState.inputFrameSize.width);
}
else
{
mState.inputFrameRowBytes = mState.inputFrameSize.width * 2u;
}
mState.captureTextureWidth = InputIsTenBit()
? PackedTextureWidthFromRowBytes(mState.inputFrameRowBytes)
: mState.inputFrameSize.width / 2u;
std::ostringstream status;
status << "DeckLink formats: capture " << (input ? VideoIOPixelFormatName(mState.inputPixelFormat) : "none")
<< ", output " << VideoIOPixelFormatName(mState.outputPixelFormat) << ".";
if (!mState.formatStatusMessage.empty())
status << " " << mState.formatStatusMessage;
mState.formatStatusMessage = status.str();
return true;
}
bool DeckLinkSession::ConfigureInput(InputFrameCallback callback, const VideoFormat& inputVideoMode, std::string& error)
{
mInputFrameCallback = std::move(callback);
if (!input)
{
mState.hasInputSource = false;
mState.inputDisplayModeName = "No input - black frame";
return true;
}
const BMDPixelFormat deckLinkInputPixelFormat = DeckLinkPixelFormatForVideoIO(mState.inputPixelFormat);
if (input->EnableVideoInput(inputVideoMode.displayMode, deckLinkInputPixelFormat, bmdVideoInputFlagDefault) != S_OK)
{
if (mState.inputPixelFormat == VideoIOPixelFormat::V210)
{
OutputDebugStringA("DeckLink 10-bit input could not be enabled; falling back to 8-bit capture.\n");
mState.inputPixelFormat = VideoIOPixelFormat::Uyvy8;
mState.inputFrameRowBytes = mState.inputFrameSize.width * 2u;
mState.captureTextureWidth = mState.inputFrameSize.width / 2u;
if (input->EnableVideoInput(inputVideoMode.displayMode, bmdFormat8BitYUV, bmdVideoInputFlagDefault) == S_OK)
{
std::ostringstream status;
status << "DeckLink formats: capture " << VideoIOPixelFormatName(mState.inputPixelFormat)
<< ", output " << VideoIOPixelFormatName(mState.outputPixelFormat)
<< ". DeckLink 10-bit input enable failed; using 8-bit capture.";
mState.formatStatusMessage = status.str();
goto input_enabled;
}
}
OutputDebugStringA("DeckLink input could not be enabled; continuing in output-only black-frame mode.\n");
input.Release();
mState.hasInputDevice = false;
mState.hasInputSource = false;
mState.inputDisplayModeName = "No input - black frame";
return true;
}
input_enabled:
captureDelegate.Attach(new (std::nothrow) CaptureDelegate(this));
if (captureDelegate == nullptr)
{
error = "DeckLink input setup failed while creating the capture callback.";
return false;
}
if (input->SetCallback(captureDelegate) != S_OK)
{
error = "DeckLink input setup failed while installing the capture callback.";
return false;
}
return true;
}
bool DeckLinkSession::ConfigureOutput(OutputFrameCallback callback, const VideoFormat& outputVideoMode, bool externalKeyingEnabled, std::string& error)
{
mOutputFrameCallback = std::move(callback);
if (output->EnableVideoOutput(outputVideoMode.displayMode, bmdVideoOutputFlagDefault) != S_OK)
{
error = "DeckLink output setup failed while enabling video output.";
return false;
}
if (output->QueryInterface(IID_IDeckLinkKeyer, (void**)&keyer) == S_OK && keyer != NULL)
mState.keyerInterfaceAvailable = true;
if (externalKeyingEnabled)
{
if (!mState.supportsExternalKeying)
{
mState.statusMessage = "External keying was requested, but the selected DeckLink output does not report external keying support.";
}
else if (!mState.keyerInterfaceAvailable)
{
mState.statusMessage = "External keying was requested, but the selected DeckLink output does not expose the IDeckLinkKeyer interface.";
}
else if (keyer->Enable(TRUE) != S_OK || keyer->SetLevel(255) != S_OK)
{
mState.statusMessage = "External keying was requested, but enabling the DeckLink keyer failed.";
}
else
{
mState.externalKeyingActive = true;
mState.statusMessage = "External keying is active on the selected DeckLink output.";
}
}
else if (mState.supportsExternalKeying)
{
mState.statusMessage = "Selected DeckLink output supports external keying. Set enableExternalKeying to true in runtime-host.json to request it.";
}
for (int i = 0; i < 10; i++)
{
CComPtr<IDeckLinkMutableVideoFrame> outputFrame;
const BMDPixelFormat deckLinkOutputPixelFormat = DeckLinkPixelFormatForVideoIO(mState.outputPixelFormat);
if (output->CreateVideoFrame(mState.outputFrameSize.width, mState.outputFrameSize.height, mState.outputFrameRowBytes, deckLinkOutputPixelFormat, bmdFrameFlagFlipVertical, &outputFrame) != S_OK)
{
error = "DeckLink output setup failed while creating an output video frame.";
return false;
}
outputVideoFrameQueue.push_back(outputFrame);
}
playoutDelegate.Attach(new (std::nothrow) PlayoutDelegate(this));
if (playoutDelegate == nullptr)
{
error = "DeckLink output setup failed while creating the playout callback.";
return false;
}
if (output->SetScheduledFrameCompletionCallback(playoutDelegate) != S_OK)
{
error = "DeckLink output setup failed while installing the scheduled-frame callback.";
return false;
}
if (!mState.formatStatusMessage.empty())
mState.statusMessage = mState.statusMessage.empty() ? mState.formatStatusMessage : mState.formatStatusMessage + " " + mState.statusMessage;
return true;
}
double DeckLinkSession::FrameBudgetMilliseconds() const
{
return mScheduler.FrameBudgetMilliseconds();
}
bool DeckLinkSession::BeginOutputFrame(VideoIOOutputFrame& frame)
{
CComPtr<IDeckLinkMutableVideoFrame> outputVideoFrame = outputVideoFrameQueue.front();
outputVideoFrameQueue.push_back(outputVideoFrame);
outputVideoFrameQueue.pop_front();
CComPtr<IDeckLinkVideoBuffer> outputVideoFrameBuffer;
if (outputVideoFrame->QueryInterface(IID_IDeckLinkVideoBuffer, (void**)&outputVideoFrameBuffer) != S_OK)
return false;
if (outputVideoFrameBuffer->StartAccess(bmdBufferAccessWrite) != S_OK)
return false;
void* pFrame = nullptr;
outputVideoFrameBuffer->GetBytes(&pFrame);
frame.bytes = pFrame;
frame.rowBytes = outputVideoFrame->GetRowBytes();
frame.width = mState.outputFrameSize.width;
frame.height = mState.outputFrameSize.height;
frame.pixelFormat = mState.outputPixelFormat;
frame.nativeFrame = outputVideoFrame.p;
frame.nativeBuffer = outputVideoFrameBuffer.Detach();
return true;
}
void DeckLinkSession::EndOutputFrame(VideoIOOutputFrame& frame)
{
IDeckLinkVideoBuffer* outputVideoFrameBuffer = static_cast<IDeckLinkVideoBuffer*>(frame.nativeBuffer);
if (outputVideoFrameBuffer != nullptr)
{
outputVideoFrameBuffer->EndAccess(bmdBufferAccessWrite);
outputVideoFrameBuffer->Release();
}
frame.nativeBuffer = nullptr;
frame.bytes = nullptr;
}
void DeckLinkSession::AccountForCompletionResult(VideoIOCompletionResult completionResult)
{
mScheduler.AccountForCompletionResult(completionResult);
}
bool DeckLinkSession::ScheduleOutputFrame(const VideoIOOutputFrame& frame)
{
IDeckLinkMutableVideoFrame* outputVideoFrame = static_cast<IDeckLinkMutableVideoFrame*>(frame.nativeFrame);
const VideoIOScheduleTime scheduleTime = mScheduler.NextScheduleTime();
if (outputVideoFrame == nullptr || output->ScheduleVideoFrame(outputVideoFrame, scheduleTime.streamTime, scheduleTime.duration, scheduleTime.timeScale) != S_OK)
return false;
return true;
}
bool DeckLinkSession::Start()
{
mScheduler.Reset();
if (!output)
{
MessageBoxA(NULL, "Cannot start playout because no DeckLink output device is available.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
if (outputVideoFrameQueue.empty())
{
MessageBoxA(NULL, "Cannot start playout because the output frame queue is empty.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
for (unsigned i = 0; i < kPrerollFrameCount; i++)
{
CComPtr<IDeckLinkMutableVideoFrame> outputVideoFrame = outputVideoFrameQueue.front();
outputVideoFrameQueue.push_back(outputVideoFrame);
outputVideoFrameQueue.pop_front();
CComPtr<IDeckLinkVideoBuffer> outputVideoFrameBuffer;
if (outputVideoFrame->QueryInterface(IID_IDeckLinkVideoBuffer, (void**)&outputVideoFrameBuffer) != S_OK)
{
MessageBoxA(NULL, "Could not query the preroll output frame buffer.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
if (outputVideoFrameBuffer->StartAccess(bmdBufferAccessWrite) != S_OK)
{
MessageBoxA(NULL, "Could not write to the preroll output frame buffer.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
void* pFrame = nullptr;
outputVideoFrameBuffer->GetBytes((void**)&pFrame);
memset(pFrame, 0, outputVideoFrame->GetRowBytes() * mState.outputFrameSize.height);
outputVideoFrameBuffer->EndAccess(bmdBufferAccessWrite);
const VideoIOScheduleTime scheduleTime = mScheduler.NextScheduleTime();
if (output->ScheduleVideoFrame(outputVideoFrame, scheduleTime.streamTime, scheduleTime.duration, scheduleTime.timeScale) != S_OK)
{
MessageBoxA(NULL, "Could not schedule a preroll output frame.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
}
if (input)
{
if (input->StartStreams() != S_OK)
{
MessageBoxA(NULL, "Could not start the DeckLink input stream.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
}
if (output->StartScheduledPlayback(0, mScheduler.TimeScale(), 1.0) != S_OK)
{
MessageBoxA(NULL, "Could not start DeckLink scheduled playback.", "DeckLink start failed", MB_OK | MB_ICONERROR);
return false;
}
return true;
}
bool DeckLinkSession::Stop()
{
if (keyer != nullptr)
{
keyer->Disable();
mState.externalKeyingActive = false;
}
if (input)
{
input->StopStreams();
input->DisableVideoInput();
}
if (output)
{
output->StopScheduledPlayback(0, NULL, 0);
output->DisableVideoOutput();
}
return true;
}
void DeckLinkSession::HandleVideoInputFrame(IDeckLinkVideoInputFrame* inputFrame, bool hasNoInputSource)
{
mState.hasInputSource = !hasNoInputSource;
if (hasNoInputSource || mInputFrameCallback == nullptr)
{
VideoIOFrame frame;
frame.width = mState.inputFrameSize.width;
frame.height = mState.inputFrameSize.height;
frame.pixelFormat = mState.inputPixelFormat;
frame.hasNoInputSource = hasNoInputSource;
if (mInputFrameCallback)
mInputFrameCallback(frame);
return;
}
CComPtr<IDeckLinkVideoBuffer> inputFrameBuffer;
void* videoPixels = nullptr;
if (inputFrame->QueryInterface(IID_IDeckLinkVideoBuffer, (void**)&inputFrameBuffer) != S_OK)
return;
if (inputFrameBuffer->StartAccess(bmdBufferAccessRead) != S_OK)
return;
inputFrameBuffer->GetBytes(&videoPixels);
VideoIOFrame frame;
frame.bytes = videoPixels;
frame.rowBytes = inputFrame->GetRowBytes();
frame.width = static_cast<unsigned>(inputFrame->GetWidth());
frame.height = static_cast<unsigned>(inputFrame->GetHeight());
frame.pixelFormat = mState.inputPixelFormat;
frame.hasNoInputSource = hasNoInputSource;
mInputFrameCallback(frame);
inputFrameBuffer->EndAccess(bmdBufferAccessRead);
}
void DeckLinkSession::HandlePlayoutFrameCompleted(IDeckLinkVideoFrame*, BMDOutputFrameCompletionResult completionResult)
{
if (!mOutputFrameCallback)
return;
VideoIOCompletion completion;
switch (completionResult)
{
case bmdOutputFrameDisplayedLate:
completion.result = VideoIOCompletionResult::DisplayedLate;
break;
case bmdOutputFrameDropped:
completion.result = VideoIOCompletionResult::Dropped;
break;
case bmdOutputFrameFlushed:
completion.result = VideoIOCompletionResult::Flushed;
break;
case bmdOutputFrameCompleted:
completion.result = VideoIOCompletionResult::Completed;
break;
default:
completion.result = VideoIOCompletionResult::Unknown;
break;
}
mOutputFrameCallback(completion);
}

79
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkSession.h
View File

@@ -1,79 +0,0 @@
#pragma once
#include "DeckLinkAPI_h.h"
#include "DeckLinkDisplayMode.h"
#include "DeckLinkFrameTransfer.h"
#include "DeckLinkVideoIOFormat.h"
#include "VideoIOFormat.h"
#include "VideoIOTypes.h"
#include "VideoPlayoutScheduler.h"
#include <atlbase.h>
#include <deque>
#include <string>
class OpenGLComposite;
class DeckLinkSession : public VideoIODevice
{
public:
DeckLinkSession() = default;
~DeckLinkSession();
void ReleaseResources() override;
bool DiscoverDevicesAndModes(const VideoFormatSelection& videoModes, std::string& error) override;
bool SelectPreferredFormats(const VideoFormatSelection& videoModes, std::string& error) override;
bool ConfigureInput(InputFrameCallback callback, const VideoFormat& inputVideoMode, std::string& error) override;
bool ConfigureOutput(OutputFrameCallback callback, const VideoFormat& outputVideoMode, bool externalKeyingEnabled, std::string& error) override;
bool Start() override;
bool Stop() override;
bool HasInputDevice() const { return mState.hasInputDevice; }
bool HasInputSource() const { return mState.hasInputSource; }
void SetInputSourceMissing(bool missing) { mState.hasInputSource = !missing; }
bool InputOutputDimensionsDiffer() const { return mState.inputFrameSize != mState.outputFrameSize; }
const FrameSize& InputFrameSize() const { return mState.inputFrameSize; }
const FrameSize& OutputFrameSize() const { return mState.outputFrameSize; }
unsigned InputFrameWidth() const { return mState.inputFrameSize.width; }
unsigned InputFrameHeight() const { return mState.inputFrameSize.height; }
unsigned OutputFrameWidth() const { return mState.outputFrameSize.width; }
unsigned OutputFrameHeight() const { return mState.outputFrameSize.height; }
VideoIOPixelFormat InputPixelFormat() const { return mState.inputPixelFormat; }
VideoIOPixelFormat OutputPixelFormat() const { return mState.outputPixelFormat; }
bool InputIsTenBit() const { return VideoIOPixelFormatIsTenBit(mState.inputPixelFormat); }
bool OutputIsTenBit() const { return VideoIOPixelFormatIsTenBit(mState.outputPixelFormat); }
unsigned InputFrameRowBytes() const { return mState.inputFrameRowBytes; }
unsigned OutputFrameRowBytes() const { return mState.outputFrameRowBytes; }
unsigned CaptureTextureWidth() const { return mState.captureTextureWidth; }
unsigned OutputPackTextureWidth() const { return mState.outputPackTextureWidth; }
const std::string& FormatStatusMessage() const { return mState.formatStatusMessage; }
const std::string& InputDisplayModeName() const { return mState.inputDisplayModeName; }
const std::string& OutputModelName() const { return mState.outputModelName; }
bool SupportsInternalKeying() const { return mState.supportsInternalKeying; }
bool SupportsExternalKeying() const { return mState.supportsExternalKeying; }
bool KeyerInterfaceAvailable() const { return mState.keyerInterfaceAvailable; }
bool ExternalKeyingActive() const { return mState.externalKeyingActive; }
const std::string& StatusMessage() const { return mState.statusMessage; }
void SetStatusMessage(const std::string& message) { mState.statusMessage = message; }
const VideoIOState& State() const override { return mState; }
VideoIOState& MutableState() override { return mState; }
double FrameBudgetMilliseconds() const;
void AccountForCompletionResult(VideoIOCompletionResult completionResult) override;
bool BeginOutputFrame(VideoIOOutputFrame& frame) override;
void EndOutputFrame(VideoIOOutputFrame& frame) override;
bool ScheduleOutputFrame(const VideoIOOutputFrame& frame) override;
void HandleVideoInputFrame(IDeckLinkVideoInputFrame* inputFrame, bool hasNoInputSource);
void HandlePlayoutFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult completionResult);
private:
CComPtr<CaptureDelegate> captureDelegate;
CComPtr<PlayoutDelegate> playoutDelegate;
CComPtr<IDeckLinkInput> input;
CComPtr<IDeckLinkOutput> output;
CComPtr<IDeckLinkKeyer> keyer;
std::deque<CComPtr<IDeckLinkMutableVideoFrame>> outputVideoFrameQueue;
VideoIOState mState;
VideoPlayoutScheduler mScheduler;
InputFrameCallback mInputFrameCallback;
OutputFrameCallback mOutputFrameCallback;
};

24
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkVideoIOFormat.cpp
View File

@@ -1,24 +0,0 @@
#include "DeckLinkVideoIOFormat.h"
BMDPixelFormat DeckLinkPixelFormatForVideoIO(VideoIOPixelFormat format)
{
switch (format)
{
case VideoIOPixelFormat::V210:
return bmdFormat10BitYUV;
case VideoIOPixelFormat::Bgra8:
return bmdFormat8BitBGRA;
case VideoIOPixelFormat::Uyvy8:
default:
return bmdFormat8BitYUV;
}
}
VideoIOPixelFormat VideoIOPixelFormatFromDeckLink(BMDPixelFormat format)
{
if (format == bmdFormat10BitYUV)
return VideoIOPixelFormat::V210;
if (format == bmdFormat8BitBGRA)
return VideoIOPixelFormat::Bgra8;
return VideoIOPixelFormat::Uyvy8;
}

7
apps/LoopThroughWithOpenGLCompositing/videoio/decklink/DeckLinkVideoIOFormat.h
View File

@@ -1,7 +0,0 @@
#pragma once
#include "DeckLinkAPI_h.h"
#include "VideoIOFormat.h"
BMDPixelFormat DeckLinkPixelFormatForVideoIO(VideoIOPixelFormat format);
VideoIOPixelFormat VideoIOPixelFormatFromDeckLink(BMDPixelFormat format);

9
config/runtime-host.json
View File

@@ -8,5 +8,14 @@
"outputFrameRate": "59.94",
"autoReload": true,
"maxTemporalHistoryFrames": 12,
"audioEnabled": true,
"audioOutputEnabled": true,
"audioScheduleEnabled": true,
"audioPrerollEnabled": true,
"audioScheduleSilence": false,
"audioScheduleTone": false,
"audioChannelCount": 2,
"audioSampleRate": 48000,
"audioDelayMode": "matchVideoPreroll",
"enableExternalKeying": true
}

406
docs/AUDIO_TEARING_INVESTIGATION.md Normal file
View File

@@ -0,0 +1,406 @@
# Audio / SDI Tearing Investigation
Date: 2026-05-05
## Problem
After adding DeckLink audio pass-through, the SDI output intermittently shows a torn/corrupted frame. The preview window does not show the artifact.
Observed artifact:
- Bottom portion of the SDI image can show an offset mix of current/previous frame.
- Looks like a frame-buffer or output-transfer issue rather than shader rendering.
- Occurs even with all shaders bypassed.
- Main branch is known good with no tearing.
Later tests also showed audio tearing/stutter when non-silent audio was scheduled.
## Known Good Baseline
- `main` branch has no SDI tearing.
- Current branch with `audioEnabled: false` ran for several minutes with no visible tearing.
This strongly suggests the issue is tied to DeckLink audio output/scheduling rather than the shader stack.
## SDK References Checked
### `InputLoopThrough`
Location:
`3rdParty/Blackmagic DeckLink SDK 16.0/Win/Samples/InputLoopThrough`
Findings:
- This is the SDK loop-through sample that keeps audio.
- It preserves DeckLink audio packet timestamps using `GetPacketTime(..., m_frameTimescale)`.
- It schedules audio packets with `ScheduleAudioSamples(..., packetTime, m_frameTimescale, ...)`.
- It uses 16-channel 32-bit embedded audio by default.
- It has separate scheduling threads for video/audio.
- It waits for both video and audio preroll before `StartScheduledPlayback`.
### `LoopThroughWithOpenGLCompositing`
Location:
`3rdParty/Blackmagic DeckLink SDK 16.0/Win/Samples/LoopThroughWithOpenGLCompositing`
Findings:
- This sample is the base for this app.
- It ignores `IDeckLinkAudioInputPacket`.
- It does not demonstrate audio pass-through.
### `SignalGenerator`
Location:
`3rdParty/Blackmagic DeckLink SDK 16.0/Win/Samples/SignalGenerator`
Findings:
- Uses `RenderAudioSamples()` callback to top up audio when DeckLink requests samples.
- Uses `GetBufferedAudioSampleFrameCount()` and a water level before scheduling more audio.
## Tests Tried And Results
### 1. Initial audio pass-through with FIFO and sample-time accumulator
Implementation:
- Copied incoming audio into a stereo FIFO.
- Scheduled audio with a generated `mNextAudioSampleFrame` clock in 48 kHz timescale.
- Matched delay to video preroll.
Result:
- Audio eventually worked.
- SDI video tearing appeared.
Conclusion:
- Basic audio output path triggered SDI instability.
### 2. Reworked audio toward SDK `InputLoopThrough` packet-timestamp model
Implementation:
- Preserved incoming packet time via `GetPacketTime(..., mFrameTimescale)`.
- Queued timestamped audio packets.
- Scheduled packets with `ScheduleAudioSamples(..., packet.streamTime, mFrameTimescale, ...)`.
Result:
- Tearing persisted.
Conclusion:
- Simply matching SDK timestamp domain did not fix the issue.
### 3. Restored video callback closer to `main`
Implementation:
- Removed extra `glFinish()` calls.
- Restored preview/readback ordering closer to `main`.
- Re-enabled fast transfer path after earlier tests disabled it.
- Removed audio texture upload from video playout callback.
- Removed audio analysis and audio locks from video playout callback.
- Removed DeckLink scheduling mutex around `ScheduleVideoFrame`.
Result:
- Tearing frequency seemed reduced at one point, but tearing persisted.
Conclusion:
- Extra work in the playout callback may have made timing worse, but was not the root cause.
### 4. Disabled audio completely
Config:
```json
"audioEnabled": false
```
Result:
- Ran for several minutes with no visible tearing.
Conclusion:
- The tearing is tied to audio being enabled.
### 5. Enabled audio input/analysis but disabled DeckLink audio output
Config:
```json
"audioEnabled": true,
"audioOutputEnabled": false
```
Result:
- No tearing appeared.
Conclusion:
- DeckLink audio input and CPU analysis are not the trigger.
- The problem is on the DeckLink audio output side.
### 6. Enabled DeckLink audio output but disabled scheduling
Config:
```json
"audioEnabled": true,
"audioOutputEnabled": true,
"audioScheduleEnabled": false
```
Result:
- No video tearing.
- Slight stutter appeared.
Conclusion:
- `EnableAudioOutput()` alone did not produce the tearing.
- Stutter was likely from enabling an audio output stream without feeding it samples.
### 7. Enabled audio scheduling but skipped audio preroll
Config:
```json
"audioEnabled": true,
"audioOutputEnabled": true,
"audioScheduleEnabled": true,
"audioPrerollEnabled": false
```
Result:
- Video tearing returned.
- Stutter also present.
Conclusion:
- `BeginAudioPreroll()` / `EndAudioPreroll()` are not required to trigger the tear.
- `ScheduleAudioSamples()` is strongly implicated.
### 8. Retained scheduled audio packet memory after `ScheduleAudioSamples`
Implementation:
- Kept scheduled packet buffers alive in a retain queue after scheduling.
- Avoided passing DeckLink pointers to vectors that immediately went out of scope.
Result:
- Video tearing and stutter persisted.
Conclusion:
- Buffer lifetime after `ScheduleAudioSamples()` was not the root cause.
### 9. Added audio water-level cap
Implementation:
- Restored SDK-style `GetBufferedAudioSampleFrameCount()` check.
- Only scheduled more audio if DeckLink buffer was below the target water level.
Result:
- Stutter was reduced.
- Video tearing persisted.
Conclusion:
- Overscheduling contributed to stutter/timing pressure.
- It did not explain the tearing.
### 10. Removed standalone audio scheduler thread
Implementation:
- Stopped starting the dedicated audio scheduler thread.
- Audio top-up occurred from input packet arrival and `RenderAudioSamples()` callback.
Result:
- No meaningful change.
Conclusion:
- The polling thread itself was not the cause.
### 11. Switched from timestamped audio output to continuous audio output
Implementation:
- Changed audio output to `bmdAudioOutputStreamContinuous`.
- Scheduled audio using a monotonic 48 kHz sample clock.
Result:
- Video tearing and stutter persisted.
Conclusion:
- The issue was not specific to timestamped output mode.
### 12. Rendered into the actual `completedFrame`
Implementation:
- Changed `PlayoutFrameCompleted()` to reuse the exact `completedFrame` passed by DeckLink rather than rotating an independent output-frame queue.
Result:
- No change.
Conclusion:
- The app was probably not overwriting a still-in-use frame from its output queue.
### 13. Scheduled generated silence instead of captured audio
Config:
```json
"audioScheduleSilence": true
```
Result:
- Occasional stutter.
- No video tearing.
Conclusion:
- Scheduling audio buffers itself can be stable if the audio data is zero.
- Non-zero audio data appears to be important.
### 14. Flattened captured audio into PCM FIFO and scheduled fixed chunks
Implementation:
- Captured packets were flattened into a PCM FIFO.
- DeckLink received fixed 10 ms chunks rather than original packet boundaries.
- Missing audio was padded with silence.
Result:
- Video tearing returned.
- Audio stutter/tearing returned.
Conclusion:
- Packet boundaries/timestamps were not the whole cause.
- Non-zero captured audio data still triggered instability.
### 15. Scheduled generated 440 Hz tone
Config:
```json
"audioScheduleTone": true
```
Result:
- Video tearing occurred.
- Tone/audio also tore.
Conclusion:
- The issue is not specific to captured input data.
- Non-zero scheduled audio, even generated tone, triggers the problem.
### 16. Changed DeckLink output to 16 embedded audio channels
Implementation:
- Enabled DeckLink audio output with 16 channels instead of 2.
- Mapped stereo to channels 1/2.
- Filled channels 3-16 with silence.
Result:
- Video tearing and audio tearing still occurred.
Conclusion:
- The issue is not simply caused by 2-channel embedded audio output.
### 17. Used DeckLink-owned output video frames with audio enabled
Implementation:
- When audio output is enabled:
- disabled fast transfer path
- created output frames with `CreateVideoFrame()`
- avoided `CreateVideoFrameWithBuffer()` and the custom pinned playout allocator
Result:
- Video tearing and audio tearing still occurred.
Conclusion:
- The custom pinned output video buffers are likely not the root cause.
## Current Strong Conclusions
- Shader stack is not the cause.
- Preview/render output is not showing the issue, so the artifact is SDI/output-side.
- DeckLink audio input is not the cause.
- DeckLink audio output enabled but unscheduled does not cause tearing.
- `ScheduleAudioSamples()` with zero/silent buffers does not cause tearing.
- `ScheduleAudioSamples()` with non-zero audio causes both video tearing and audio tearing.
- The problem persists across:
- timestamped audio output
- continuous audio output
- captured audio
- generated tone
- 2-channel output
- 16-channel embedded output
- app-owned/pinned output video buffers
- DeckLink-owned output video frames
## Current Hypothesis
The issue appears to be a DeckLink output interaction where non-zero embedded audio samples disturb SDI video/audio output in this app’s scheduling model.
Since silence is stable but tone is not, the next likely areas to investigate are:
- Audio sample format/range/endian expectations.
- Whether DeckLink expects 32-bit audio samples to be in a different effective range than we are providing.
- Whether the scheduled audio buffer layout for the selected hardware/output mode differs from our assumptions.
- Whether the selected output mode/keyer/SDI configuration has constraints when non-zero embedded audio is present.
- Whether the SDK sample behaves correctly on the same hardware with a generated tone and same video mode.
## Suggested Next Tests
1. Schedule very low amplitude non-zero audio, e.g. constant `1`, then `256`, then a very quiet sine.
2. Try 16-bit audio output instead of 32-bit if supported.
3. Try `bmdAudioOutputStreamContinuousDontResample`.
4. Disable external keying and test with non-zero audio.
5. Build/run the SDK `SignalGenerator` or `InputLoopThrough` sample on the same DeckLink device, video mode, and SDI output path with non-zero embedded audio.
6. Add instrumentation for DeckLink status/errors around scheduled video/audio completion.
7. Confirm Desktop Video setup panel audio/SDI settings for the selected output.
## Current Config At Time Of Note
```json
"audioEnabled": true,
"audioOutputEnabled": true,
"audioScheduleEnabled": true,
"audioPrerollEnabled": true,
"audioScheduleSilence": false,
"audioScheduleTone": false
```

6
docs/OSC_CONTROL.md
View File

@@ -70,12 +70,6 @@ Examples:
Values are validated with the same shader parameter rules used by the REST API. Invalid values or unknown addresses are ignored and reported to the native debug output.
For `trigger` parameters, the OSC value is treated as a pulse. A simple integer or boolean message is enough:
```text
/VideoShaderToys/trigger-flash/flash 1
```
## Open Stage Control
For simple scalar controls, set the widget address and target directly:

20
docs/openapi.yaml
View File

@@ -214,24 +214,6 @@ paths:
$ref: "#/components/responses/ActionOk"
"400":
$ref: "#/components/responses/ActionError"
/api/screenshot:
post:
tags: [Runtime]
summary: Queue a PNG screenshot of the final output render target
description: Captures the next completed output render target and writes it under `runtime/screenshots/`.
operationId: queueScreenshot
requestBody:
required: false
content:
application/json:
schema:
type: object
additionalProperties: false
responses:
"200":
$ref: "#/components/responses/ActionOk"
"400":
$ref: "#/components/responses/ActionError"
components:
responses:
ActionOk:
@@ -492,7 +474,7 @@ components:
type: string
type:
type: string
enum: [float, vec2, color, bool, enum, text, trigger]
enum: [float, vec2, color, bool, enum]
min:
type: array
items:

2
runtime/README.md
View File

@@ -17,7 +17,7 @@ Generated files:
- `shader_cache/active_shader_wrapper.slang`: generated Slang wrapper for the active shader/layer.
- `shader_cache/active_shader.raw.frag`: raw GLSL emitted by `slangc`.
- `shader_cache/active_shader.frag`: patched GLSL consumed by the OpenGL path.
- `runtime_state.json`: autosaved latest layer stack, layer order, bypass state, shader assignments, and parameter values. The host reloads this file on startup.
- `runtime_state.json`: persisted layer stack and parameter values.
- `stack_presets/*.json`: user-saved layer stack presets.
Git policy:

37
runtime/templates/shader_wrapper.slang.in
View File

@@ -11,14 +11,16 @@ struct ShaderContext
float2 inputResolution;
float2 outputResolution;
float time;
float utcTimeSeconds;
float utcOffsetSeconds;
float startupRandom;
float frameCount;
float mixAmount;
float bypass;
int sourceHistoryLength;
int temporalHistoryLength;
float2 audioRms;
float2 audioPeak;
float audioMonoRms;
float audioMonoPeak;
float4 audioBands;
};
cbuffer GlobalParams
@@ -26,24 +28,36 @@ cbuffer GlobalParams
float gTime;
float2 gInputResolution;
float2 gOutputResolution;
float gUtcTimeSeconds;
float gUtcOffsetSeconds;
float gStartupRandom;
float gFrameCount;
float gMixAmount;
float gBypass;
int gSourceHistoryLength;
int gTemporalHistoryLength;
float2 gAudioRms;
float2 gAudioPeak;
float gAudioMonoRms;
float gAudioMonoPeak;
float4 gAudioBands;
{{PARAMETER_UNIFORMS}}};
Sampler2D<float4> gVideoInput;
Sampler2D<float4> gAudioData;
{{SOURCE_HISTORY_SAMPLERS}}{{TEMPORAL_HISTORY_SAMPLERS}}{{TEXTURE_SAMPLERS}}
{{TEXT_SAMPLERS}}
float4 sampleVideo(float2 tc)
{
return gVideoInput.Sample(tc);
}
float4 sampleAudioWaveform(float x)
{
return gAudioData.Sample(float2(saturate(x), 0.25));
}
float4 sampleAudioSpectrum(float x)
{
return gAudioData.Sample(float2(saturate(x), 0.75));
}
float4 sampleSourceHistory(int framesAgo, float2 tc)
{
if (gSourceHistoryLength <= 0)
@@ -74,7 +88,6 @@ float4 sampleTemporalHistory(int framesAgo, float2 tc)
}
}
{{TEXT_HELPERS}}
#include "{{USER_SHADER_INCLUDE}}"
[shader("fragment")]
@@ -86,14 +99,16 @@ float4 fragmentMain(FragmentInput input) : SV_Target
context.inputResolution = gInputResolution;
context.outputResolution = gOutputResolution;
context.time = gTime;
context.utcTimeSeconds = gUtcTimeSeconds;
context.utcOffsetSeconds = gUtcOffsetSeconds;
context.startupRandom = gStartupRandom;
context.frameCount = gFrameCount;
context.mixAmount = gMixAmount;
context.bypass = gBypass;
context.sourceHistoryLength = gSourceHistoryLength;
context.temporalHistoryLength = gTemporalHistoryLength;
context.audioRms = gAudioRms;
context.audioPeak = gAudioPeak;
context.audioMonoRms = gAudioMonoRms;
context.audioMonoPeak = gAudioMonoPeak;
context.audioBands = gAudioBands;
float4 effectedColor = {{ENTRY_POINT_CALL}};
float mixValue = clamp(gBypass > 0.5 ? 0.0 : gMixAmount, 0.0, 1.0);
return lerp(context.sourceColor, effectedColor, mixValue);

46
shaders/anamorphic-desqueeze/shader.json
View File

@@ -1,46 +0,0 @@
{
"id": "anamorphic-desqueeze",
"name": "Anamorphic Desqueeze",
"description": "Desqueezes anamorphic footage by 1.3x, 1.33x, 1.5x, or 2x with fit or fill framing.",
"category": "Transform",
"entryPoint": "shadeVideo",
"parameters": [
{
"id": "desqueezeFactor",
"label": "Desqueeze",
"type": "enum",
"default": "x1_33",
"options": [
{ "value": "x1_3", "label": "1.3x" },
{ "value": "x1_33", "label": "1.33x" },
{ "value": "x1_5", "label": "1.5x" },
{ "value": "x2_0", "label": "2x" }
]
},
{
"id": "framing",
"label": "Framing",
"type": "enum",
"default": "fit",
"options": [
{ "value": "fit", "label": "Fit" },
{ "value": "fill", "label": "Fill" }
]
},
{
"id": "pan",
"label": "Pan",
"type": "vec2",
"default": [0.0, 0.0],
"min": [-1.0, -1.0],
"max": [1.0, 1.0],
"step": [0.001, 0.001]
},
{
"id": "outsideColor",
"label": "Outside Color",
"type": "color",
"default": [0.0, 0.0, 0.0, 1.0]
}
]
}

32
shaders/anamorphic-desqueeze/shader.slang
View File

@@ -1,32 +0,0 @@
float selectedDesqueezeFactor()
{
if (desqueezeFactor == 0)
return 1.3;
if (desqueezeFactor == 1)
return 1.3333333;
if (desqueezeFactor == 2)
return 1.5;
return 2.0;
}
float4 shadeVideo(ShaderContext context)
{
float factor = selectedDesqueezeFactor();
float2 centered = context.uv - 0.5;
if (framing == 0)
{
centered.y *= factor;
}
else
{
centered.x /= factor;
}
float2 sourceUv = centered + 0.5 - pan;
bool inside = sourceUv.x >= 0.0 && sourceUv.x <= 1.0 && sourceUv.y >= 0.0 && sourceUv.y <= 1.0;
if (!inside)
return outsideColor;
return sampleVideo(sourceUv);
}

76
shaders/audio-vu-meter/shader.json Normal file
View File

@@ -0,0 +1,76 @@
{
"id": "audio-vu-meter",
"name": "Audio VU Meter",
"description": "Draws stereo audio level meters from the runtime audio analysis data.",
"category": "Utility",
"entryPoint": "shadeVideo",
"parameters": [
{
"id": "meterPosition",
"label": "Position",
"type": "vec2",
"default": [0.08, 0.82],
"min": [0.0, 0.0],
"max": [1.0, 1.0],
"step": [0.01, 0.01]
},
{
"id": "meterScale",
"label": "Scale",
"type": "float",
"default": 0.35,
"min": 0.1,
"max": 1.0,
"step": 0.01
},
{
"id": "meterOpacity",
"label": "Opacity",
"type": "float",
"default": 0.9,
"min": 0.0,
"max": 1.0,
"step": 0.01
},
{
"id": "noiseGate",
"label": "Noise Gate",
"type": "float",
"default": 0.03,
"min": 0.0,
"max": 0.5,
"step": 0.01
},
{
"id": "meterColor",
"label": "Meter Color",
"type": "color",
"default": [0.2, 1.0, 0.55, 1.0]
},
{
"id": "peakColor",
"label": "Peak Color",
"type": "color",
"default": [1.0, 0.85, 0.2, 1.0]
},
{
"id": "backgroundOpacity",
"label": "Background",
"type": "float",
"default": 0.45,
"min": 0.0,
"max": 1.0,
"step": 0.01
},
{
"id": "orientation",
"label": "Orientation",
"type": "enum",
"default": "horizontal",
"options": [
{ "value": "horizontal", "label": "Horizontal" },
{ "value": "vertical", "label": "Vertical" }
]
}
]
}

59
shaders/audio-vu-meter/shader.slang Normal file
View File

@@ -0,0 +1,59 @@
float rectMask(float2 uv, float2 minUv, float2 maxUv)
{
float2 insideMin = step(minUv, uv);
float2 insideMax = step(uv, maxUv);
return insideMin.x * insideMin.y * insideMax.x * insideMax.y;
}
float denoiseLevel(float value)
{
float gate = saturate(noiseGate);
float clean = saturate((value - gate) / max(1.0 - gate, 0.001));
return smoothstep(0.0, 1.0, clean);
}
float4 shadeVideo(ShaderContext context)
{
float4 color = context.sourceColor;
float2 size = orientation == 0 ? float2(meterScale, meterScale * 0.18) : float2(meterScale * 0.18, meterScale);
float2 minUv = clamp(meterPosition, 0.0, 1.0 - size);
float2 local = (context.uv - minUv) / max(size, float2(0.001));
float inside = rectMask(local, float2(0.0), float2(1.0));
if (inside <= 0.0)
return color;
float3 bg = lerp(color.rgb, float3(0.0), saturate(backgroundOpacity));
float leftLevel = denoiseLevel(context.audioRms.x * 2.4);
float rightLevel = denoiseLevel(context.audioRms.y * 2.4);
float leftPeak = denoiseLevel(context.audioPeak.x);
float rightPeak = denoiseLevel(context.audioPeak.y);
float bar = 0.0;
float peak = 0.0;
if (orientation == 0)
{
float leftRow = rectMask(local, float2(0.04, 0.58), float2(0.96, 0.86));
float rightRow = rectMask(local, float2(0.04, 0.14), float2(0.96, 0.42));
float leftFill = rectMask(local, float2(0.04, 0.58), float2(0.04 + 0.92 * leftLevel, 0.86));
float rightFill = rectMask(local, float2(0.04, 0.14), float2(0.04 + 0.92 * rightLevel, 0.42));
float leftPeakLine = rectMask(local, float2(0.04 + 0.92 * leftPeak - 0.006, 0.55), float2(0.04 + 0.92 * leftPeak + 0.006, 0.89));
float rightPeakLine = rectMask(local, float2(0.04 + 0.92 * rightPeak - 0.006, 0.11), float2(0.04 + 0.92 * rightPeak + 0.006, 0.45));
bar = max(leftFill, rightFill);
peak = max(leftPeakLine * leftRow, rightPeakLine * rightRow);
}
else
{
float leftColumn = rectMask(local, float2(0.14, 0.04), float2(0.42, 0.96));
float rightColumn = rectMask(local, float2(0.58, 0.04), float2(0.86, 0.96));
float leftFill = rectMask(local, float2(0.14, 0.04), float2(0.42, 0.04 + 0.92 * leftLevel));
float rightFill = rectMask(local, float2(0.58, 0.04), float2(0.86, 0.04 + 0.92 * rightLevel));
float leftPeakLine = rectMask(local, float2(0.11, 0.04 + 0.92 * leftPeak - 0.006), float2(0.45, 0.04 + 0.92 * leftPeak + 0.006));
float rightPeakLine = rectMask(local, float2(0.55, 0.04 + 0.92 * rightPeak - 0.006), float2(0.89, 0.04 + 0.92 * rightPeak + 0.006));
bar = max(leftFill * leftColumn, rightFill * rightColumn);
peak = max(leftPeakLine, rightPeakLine);
}
float3 metered = lerp(bg, meterColor.rgb, bar * saturate(meterOpacity) * meterColor.a);
metered = lerp(metered, peakColor.rgb, peak * saturate(meterOpacity) * peakColor.a);
return float4(metered, color.a);
}

105
shaders/balatro-swirl/shader.json
View File

@@ -1,105 +0,0 @@
{
"id": "balatro-swirl",
"name": "Balatro Swirl",
"description": "Animated painterly swirl background. Original by localthunk (https://www.playbalatro.com), adapted from https://www.shadertoy.com/view/XXtBRr.",
"category": "Generative",
"entryPoint": "shadeVideo",
"parameters": [
{
"id": "spinRotation",
"label": "Spin Rotation",
"type": "float",
"default": -2.0,
"min": -8.0,
"max": 8.0,
"step": 0.05
},
{
"id": "spinSpeed",
"label": "Spin Speed",
"type": "float",
"default": 7.0,
"min": 0.0,
"max": 20.0,
"step": 0.1
},
{
"id": "spinAmount",
"label": "Spin Amount",
"type": "float",
"default": 0.25,
"min": 0.0,
"max": 1.0,
"step": 0.01
},
{
"id": "spinEase",
"label": "Spin Ease",
"type": "float",
"default": 1.0,
"min": 0.0,
"max": 3.0,
"step": 0.01
},
{
"id": "contrast",
"label": "Contrast",
"type": "float",
"default": 3.5,
"min": 0.5,
"max": 8.0,
"step": 0.05
},
{
"id": "lighting",
"label": "Lighting",
"type": "float",
"default": 0.4,
"min": 0.0,
"max": 1.5,
"step": 0.01
},
{
"id": "offset",
"label": "Offset",
"type": "vec2",
"default": [0.0, 0.0],
"min": [-1.0, -1.0],
"max": [1.0, 1.0],
"step": [0.001, 0.001]
},
{
"id": "colour1",
"label": "Colour 1",
"type": "color",
"default": [0.871, 0.267, 0.231, 1.0]
},
{
"id": "colour2",
"label": "Colour 2",
"type": "color",
"default": [0.0, 0.42, 0.706, 1.0]
},
{
"id": "colour3",
"label": "Colour 3",
"type": "color",
"default": [0.086, 0.137, 0.145, 1.0]
},
{
"id": "isRotate",
"label": "Rotate Field",
"type": "bool",
"default": false
},
{
"id": "sourceMix",
"label": "Source Mix",
"type": "float",
"default": 0.0,
"min": 0.0,
"max": 1.0,
"step": 0.01
}
]
}

48
shaders/balatro-swirl/shader.slang
View File

@@ -1,48 +0,0 @@
float4 balatroSwirl(float2 screenSize, float2 screenCoords, float time, float seed)
{
const float pi = 3.14159265359;
float safeScreenLength = max(length(screenSize), 1.0);
float2 seedOffset = float2(sin(seed * 6.2831853), cos(seed * 6.2831853)) * 0.035;
float2 uv = (screenCoords - 0.5 * screenSize) / safeScreenLength - offset - seedOffset;
float uvLength = length(uv);
float speed = spinRotation * spinEase * 0.2;
if (isRotate)
speed = time * speed;
speed += 302.2 + seed * 6.2831853;
float newPixelAngle = atan2(uv.y, uv.x) + speed - spinEase * 20.0 * (spinAmount * uvLength + (1.0 - spinAmount));
float2 mid = (screenSize / safeScreenLength) * 0.5;
uv = float2(uvLength * cos(newPixelAngle) + mid.x, uvLength * sin(newPixelAngle) + mid.y) - mid;
uv *= 30.0;
speed = (time + seed * 17.0) * spinSpeed;
float2 uv2 = float2(uv.x + uv.y, uv.x + uv.y);
for (int i = 0; i < 5; ++i)
{
uv2 += float2(sin(max(uv.x, uv.y)), sin(max(uv.x, uv.y))) + uv;
uv += 0.5 * float2(cos(5.1123314 + 0.353 * uv2.y + speed * 0.131121), sin(uv2.x - 0.113 * speed));
float warp = cos(uv.x + uv.y) - sin(uv.x * 0.711 - uv.y);
uv -= float2(warp, warp);
}
float contrastMod = 0.25 * contrast + 0.5 * spinAmount + 1.2;
float paintRes = min(2.0, max(0.0, length(uv) * 0.035 * contrastMod));
float c1p = max(0.0, 1.0 - contrastMod * abs(1.0 - paintRes));
float c2p = max(0.0, 1.0 - contrastMod * abs(paintRes));
float c3p = 1.0 - min(1.0, c1p + c2p);
float light = (lighting - 0.2) * max(c1p * 5.0 - 4.0, 0.0) + lighting * max(c2p * 5.0 - 4.0, 0.0);
float safeContrast = max(contrast, 0.001);
float4 base = (0.3 / safeContrast) * colour1;
float4 paint = colour1 * c1p + colour2 * c2p + float4(c3p * colour3.rgb, c3p * colour1.a);
return base + (1.0 - 0.3 / safeContrast) * paint + float4(light, light, light, light);
}
float4 shadeVideo(ShaderContext context)
{
float2 screenSize = max(context.outputResolution, float2(1.0, 1.0));
float4 swirl = balatroSwirl(screenSize, context.uv * screenSize, context.time, context.startupRandom);
return saturate(lerp(swirl, context.sourceColor, sourceMix));
}

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