Refactor parameter passing to decoders and split backend/decode-only and frontend renderers

app/streaming/video/slvid.h

@@ -9,14 +9,7 @@ class SLVideoDecoder : public IVideoDecoder
 public:
     SLVideoDecoder(bool testOnly);
     virtual ~SLVideoDecoder();
-    virtual bool initialize(StreamingPreferences::VideoDecoderSelection vds,
-                            SDL_Window* window,
-                            int videoFormat,
-                            int width,
-                            int height,
-                            int frameRate,
-                            bool enableVsync,
-                            bool enableFramePacing);
+    virtual bool initialize(PDECODER_PARAMETERS params);
     virtual bool isHardwareAccelerated();
     virtual int getDecoderCapabilities();
     virtual int submitDecodeUnit(PDECODE_UNIT du);