Allow decoders to choose a desired colorspace

app/streaming/video/decoder.h

@@ -44,6 +44,7 @@ public:
     virtual bool initialize(PDECODER_PARAMETERS params) = 0;
     virtual bool isHardwareAccelerated() = 0;
     virtual int getDecoderCapabilities() = 0;
+    virtual int getDecoderColorspace() = 0;
     virtual int submitDecodeUnit(PDECODE_UNIT du) = 0;
     virtual void renderFrameOnMainThread() = 0;
 };

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

@@ -31,6 +31,11 @@ public:
         return 0;
     }
 
+    virtual int getDecoderColorspace() {
+        // Rec 601 is default
+        return COLORSPACE_REC_601;
+    }
+
     virtual FramePacingConstraint getFramePacingConstraint() {
         // No pacing preference
         return PACING_ANY;

app/streaming/video/ffmpeg.cpp

@@ -50,6 +50,11 @@ int FFmpegVideoDecoder::getDecoderCapabilities()
     return m_BackendRenderer->getDecoderCapabilities();
 }
 
+int FFmpegVideoDecoder::getDecoderColorspace()
+{
+    return m_FrontendRenderer->getDecoderColorspace();
+}
+
 enum AVPixelFormat FFmpegVideoDecoder::ffGetFormat(AVCodecContext* context,
                                                    const enum AVPixelFormat* pixFmts)
 {

app/streaming/video/ffmpeg.h

@@ -17,6 +17,7 @@ public:
     virtual bool initialize(PDECODER_PARAMETERS params) override;
     virtual bool isHardwareAccelerated() override;
     virtual int getDecoderCapabilities() override;
+    virtual int getDecoderColorspace() override;
     virtual int submitDecodeUnit(PDECODE_UNIT du) override;
     virtual void renderFrameOnMainThread() override;
 

app/streaming/video/slvid.cpp

@@ -31,6 +31,12 @@ SLVideoDecoder::getDecoderCapabilities()
     return 0;
 }
 
+int
+SLVideoDecoder::getDecoderColorspace()
+{
+    return COLORSPACE_REC_709;
+}
+
 bool
 SLVideoDecoder::initialize(PDECODER_PARAMETERS params)
 {

app/streaming/video/slvid.h

@@ -12,6 +12,7 @@ public:
     virtual bool initialize(PDECODER_PARAMETERS params);
     virtual bool isHardwareAccelerated();
     virtual int getDecoderCapabilities();
+    virtual int getDecoderColorspace();
     virtual int submitDecodeUnit(PDECODE_UNIT du);
 
     // Unused since rendering is done directly from the decode thread