DXVA2 Hardware Decoding (#3)

2026-06-17 14:11:33 +00:00 · 2018-07-13 02:28:10 -07:00
parent 86f843464c
commit 1cae5f83e5
8 changed files with 810 additions and 87 deletions
@@ -0,0 +1,65 @@
+#pragma once
+
+#include "renderer.h"
+
+#include <d3d9.h>
+#include <dxva2api.h>
+
+extern "C" {
+#include <libavcodec/dxva2.h>
+}
+
+class DXVA2Renderer : public IRenderer
+{
+public:
+    DXVA2Renderer();
+    virtual ~DXVA2Renderer();
+    virtual bool initialize(SDL_Window* window,
+                            int videoFormat,
+                            int width,
+                            int height);
+    virtual bool prepareDecoderContext(AVCodecContext* context);
+    virtual void renderFrame(AVFrame* frame);
+
+private:
+    bool initializeDecoder();
+    bool initializeRenderer();
+
+    static
+    AVBufferRef* ffPoolAlloc(void* opaque, int size);
+
+    static
+    void ffPoolDummyDelete(void*, uint8_t*);
+
+    static
+    int ffGetBuffer2(AVCodecContext* context, AVFrame* frame, int flags);
+
+    static
+    enum AVPixelFormat ffGetFormat(AVCodecContext*,
+                                   const enum AVPixelFormat* pixFmts);
+
+    int m_VideoFormat;
+    int m_Width;
+    int m_Height;
+
+    SDL_Renderer* m_SdlRenderer;
+
+    struct dxva_context m_DXVAContext;
+    IDirect3DSurface9* m_DecSurfaces[19];
+    DXVA2_ConfigPictureDecode m_Config;
+    IDirectXVideoDecoderService* m_DecService;
+    IDirectXVideoDecoder* m_Decoder;
+    int m_SurfacesUsed;
+    AVBufferPool* m_Pool;
+
+    IDirect3DDevice9* m_Device;
+    IDirect3DSurface9* m_RenderTarget;
+    IDirectXVideoProcessorService* m_ProcService;
+    IDirectXVideoProcessor* m_Processor;
+    DXVA2_ValueRange m_BrightnessRange;
+    DXVA2_ValueRange m_ContrastRange;
+    DXVA2_ValueRange m_HueRange;
+    DXVA2_ValueRange m_SaturationRange;
+    DXVA2_VideoDesc m_Desc;
+    REFERENCE_TIME m_FrameIndex;
+};