Intial somewhat working version

2026-05-02 14:20:38 +10:00
commit a76d37c2e8
28 changed files with 2572 additions and 0 deletions
--- a/src/DeckLinkPipeline.h
+++ b/src/DeckLinkPipeline.h
@@ -0,0 +1,93 @@
+#pragma once
+
+#include "AppState.h"
+#include "D3DProcessor.h"
+
+#include "DeckLinkApi.h"
+#include <wrl/client.h>
+
+#include <atomic>
+#include <mutex>
+#include <string>
+
+class DeckLinkPipeline;
+
+class DeckLinkInputCallback final : public IDeckLinkInputCallback
+{
+public:
+    explicit DeckLinkInputCallback(DeckLinkPipeline& pipeline);
+
+    HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID* ppv) override;
+    ULONG STDMETHODCALLTYPE AddRef() override;
+    ULONG STDMETHODCALLTYPE Release() override;
+    HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode* mode, BMDDetectedVideoInputFormatFlags flags) override;
+    HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame* videoFrame, IDeckLinkAudioInputPacket* audioPacket) override;
+
+private:
+    std::atomic<ULONG> m_refCount = 1;
+    DeckLinkPipeline& m_pipeline;
+};
+
+class DeckLinkOutputCallback final : public IDeckLinkVideoOutputCallback
+{
+public:
+    explicit DeckLinkOutputCallback(DeckLinkPipeline& pipeline);
+
+    HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID* ppv) override;
+    ULONG STDMETHODCALLTYPE AddRef() override;
+    ULONG STDMETHODCALLTYPE Release() override;
+    HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult result) override;
+    HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped() override;
+
+private:
+    std::atomic<ULONG> m_refCount = 1;
+    DeckLinkPipeline& m_pipeline;
+};
+
+class DeckLinkPipeline
+{
+public:
+    DeckLinkPipeline(AppState& appState, D3DProcessor& processor);
+    ~DeckLinkPipeline();
+
+    bool initialize(std::string& error);
+    bool start(std::string& error);
+    void stop();
+    void onFormatChanged(IDeckLinkDisplayMode* mode, BMDDetectedVideoInputFormatFlags flags);
+    void onFrameArrived(IDeckLinkVideoInputFrame* videoFrame);
+    void onOutputFrameCompleted(BMDOutputFrameCompletionResult result);
+
+private:
+    friend class DeckLinkInputCallback;
+    friend class DeckLinkOutputCallback;
+
+    bool selectDevice(std::string& error);
+    bool findStartupMode(Microsoft::WRL::ComPtr<IDeckLinkDisplayMode>& selectedMode, std::string& error);
+    bool configureForMode(IDeckLinkDisplayMode* mode, BMDPixelFormat inputFormat, std::string& error);
+    bool chooseOutputFormat(BMDDisplayMode displayMode, BMDPixelFormat& outputFormat);
+    void updateStatusLocked();
+    std::string deckLinkName(IDeckLink* deckLink) const;
+    std::string displayModeName(IDeckLinkDisplayMode* mode) const;
+
+    AppState& m_appState;
+    D3DProcessor& m_processor;
+    mutable std::recursive_mutex m_mutex;
+
+    Microsoft::WRL::ComPtr<IDeckLink> m_deckLink;
+    Microsoft::WRL::ComPtr<IDeckLinkInput> m_input;
+    Microsoft::WRL::ComPtr<IDeckLinkOutput> m_output;
+    Microsoft::WRL::ComPtr<IDeckLinkConfiguration> m_configuration;
+    Microsoft::WRL::ComPtr<IDeckLinkVideoConversion> m_converter;
+    Microsoft::WRL::ComPtr<IDeckLinkDisplayMode> m_activeMode;
+    Microsoft::WRL::ComPtr<DeckLinkInputCallback> m_inputCallback;
+    Microsoft::WRL::ComPtr<DeckLinkOutputCallback> m_outputCallback;
+
+    PipelineStatus m_status;
+    BMDPixelFormat m_inputFormat = bmdFormat8BitYUV;
+    BMDPixelFormat m_outputFormat = bmdFormat8BitARGB;
+    BMDTimeValue m_frameDuration = 1001;
+    BMDTimeScale m_frameTimescale = 30000;
+    uint64_t m_totalScheduled = 0;
+    bool m_initialized = false;
+    bool m_streamStarted = false;
+};