DXVA2 Hardware Decoding (#3)

app/streaming/session.hpp

@@ -7,6 +7,7 @@
 #include "backend/computermanager.h"
 #include "settings/streamingpreferences.h"
 #include "input.hpp"
+#include "renderers/renderer.h"
 
 extern "C" {
 #include <libavcodec/avcodec.h>
@@ -44,6 +45,23 @@ private:
 
     int sdlDetermineAudioConfiguration();
 
+    static
+    bool chooseDecoder(StreamingPreferences::VideoDecoderSelection vds,
+                       SDL_Window* window,
+                       int videoFormat,
+                       int width, int height,
+                       AVCodec*& chosenDecoder,
+                       const AVCodecHWConfig*& chosenHwConfig,
+                       IRenderer*& newRenderer);
+
+    static
+    enum AVPixelFormat getHwFormat(AVCodecContext*,
+                                   const enum AVPixelFormat* pixFmts);
+
+    static
+    bool isHardwareDecodeAvailable(StreamingPreferences::VideoDecoderSelection vds,
+                                   int videoFormat, int width, int height);
+
     void renderFrame(SDL_UserEvent* event);
 
     void dropFrame(SDL_UserEvent* event);
@@ -92,12 +110,13 @@ private:
     NvComputer* m_Computer;
     NvApp m_App;
     SDL_Window* m_Window;
-    SDL_Renderer* m_Renderer;
-    SDL_Texture* m_Texture;
 
     static AVPacket s_Pkt;
     static AVCodecContext* s_VideoDecoderCtx;
     static QByteArray s_DecodeBuffer;
+    static AVBufferRef* s_HwDeviceCtx;
+    static const AVCodecHWConfig* s_HwDecodeCfg;
+    static IRenderer* s_Renderer;
 
     static SDL_AudioDeviceID s_AudioDevice;
     static OpusMSDecoder* s_OpusDecoder;