re organisation

apps/LoopThroughWithOpenGLCompositing/gl/pipeline/OpenGLVideoIOBridge.cpp

@@ -0,0 +1,124 @@
+#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);
+}