Revert "Change the read method of ffmpeg from filename to buffer". This bug was only affecting the load of photos and that usage was removed.

src/avdecoder.h

@@ -20,7 +20,6 @@
 #ifndef AVDECODER_H
 #define AVDECODER_H
 
-#include <QFile>
 #include <QImage>
 #include <QString>
 
@@ -59,14 +58,9 @@ public:
     static AvInit init;
 
 private:
-    void AVFrameToQImage(AVFrame &frame, QImage &image, int width, int height);
     AVFrame *getDecodedFrame(AVCodecContext *pCodecCtx, int stream_index);
 
-    static int readFunction(void* opaque, uint8_t* buf, int buf_size);
-    static int64_t seekFunction(void* opaque, int64_t offset, int whence);
-
     AVFormatContext *pFormatCtx;
-    QFile *file;
 };
 
 #endif // AVDECODER_H