Add reference frame invalidation for the software decoder

app/streaming/video/ffmpeg-renderers/dxva2.cpp

@@ -619,6 +619,11 @@ bool DXVA2Renderer::needsTestFrame()
     return false;
 }
 
+int DXVA2Renderer::getDecoderCapabilities()
+{
+    return 0;
+}
+
 void DXVA2Renderer::renderFrameAtVsync(AVFrame *frame)
 {
     IDirect3DSurface9* surface = reinterpret_cast<IDirect3DSurface9*>(frame->data[3]);

app/streaming/video/ffmpeg-renderers/dxva2.h

@@ -24,6 +24,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context);
     virtual void renderFrameAtVsync(AVFrame* frame);
     virtual bool needsTestFrame();
+    virtual int getDecoderCapabilities();
 
 private:
     bool initializeDecoder();

app/streaming/video/ffmpeg-renderers/renderer.h

@@ -18,6 +18,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context) = 0;
     virtual void renderFrameAtVsync(AVFrame* frame) = 0;
     virtual bool needsTestFrame() = 0;
+    virtual int getDecoderCapabilities() = 0;
 };
 
 class SdlRenderer : public IFFmpegRenderer {
@@ -33,6 +34,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context);
     virtual void renderFrameAtVsync(AVFrame* frame);
     virtual bool needsTestFrame();
+    virtual int getDecoderCapabilities();
 
 private:
     SDL_Renderer* m_Renderer;

app/streaming/video/ffmpeg-renderers/sdl.cpp

@@ -36,6 +36,12 @@ bool SdlRenderer::needsTestFrame()
     return false;
 }
 
+int SdlRenderer::getDecoderCapabilities()
+{
+    // The FFmpeg CPU decoder can handle reference frame invalidation
+    return CAPABILITY_REFERENCE_FRAME_INVALIDATION_AVC | CAPABILITY_REFERENCE_FRAME_INVALIDATION_HEVC;
+}
+
 bool SdlRenderer::initialize(SDL_Window* window,
                              int,
                              int width,

app/streaming/video/ffmpeg-renderers/vaapi.cpp

@@ -149,6 +149,12 @@ VAAPIRenderer::needsTestFrame()
     return true;
 }
 
+int
+VAAPIRenderer::getDecoderCapabilities()
+{
+    return 0;
+}
+
 void
 VAAPIRenderer::renderFrameAtVsync(AVFrame* frame)
 {

app/streaming/video/ffmpeg-renderers/vaapi.h

@@ -39,6 +39,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context);
     virtual void renderFrameAtVsync(AVFrame* frame);
     virtual bool needsTestFrame();
+    virtual int getDecoderCapabilities();
 
 private:
     int m_WindowSystem;

app/streaming/video/ffmpeg-renderers/vdpau.cpp

@@ -230,6 +230,11 @@ bool VDPAURenderer::needsTestFrame()
     return true;
 }
 
+int VDPAURenderer::getDecoderCapabilities()
+{
+    return 0;
+}
+
 void VDPAURenderer::renderFrameAtVsync(AVFrame* frame)
 {
     VdpStatus status;

app/streaming/video/ffmpeg-renderers/vdpau.h

@@ -22,6 +22,7 @@ public:
     virtual bool prepareDecoderContext(AVCodecContext* context);
     virtual void renderFrameAtVsync(AVFrame* frame);
     virtual bool needsTestFrame();
+    virtual int getDecoderCapabilities();
 
 private:
     uint32_t m_VideoWidth, m_VideoHeight;

app/streaming/video/ffmpeg-renderers/vt.mm

@@ -196,6 +196,11 @@ public:
         return false;
     }
 
+    virtual int getDecoderCapabilities() override
+    {
+        return 0;
+    }
+
 private:
     void setupDisplayLayer()
     {