audio_decoder.h

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#ifndef AUDIO_DECODER_H
#define AUDIO_DECODER_H
 
#include <SDL2/SDL_audio.h>
#include <string>
 
// Forward declarations for FFmpeg structs
struct AVFormatContext;
struct AVCodecContext;
struct AVFrame;
struct AVPacket;
struct SwrContext;
struct AVAudioFifo;
 
class FFmpegPlayer; // Forward declaration
 
class AudioDecoder {
public:
    AudioDecoder(FFmpegPlayer* player);
 
    ~AudioDecoder();
 
    bool setup(AVFormatContext* formatContext);
 
    void play();
 
    void stop();
 
    void update();
 
    bool decodeAudioFrame();
 
    void fillAudioStream(Uint8* stream, int len);
 
    static void SDLAudioCallback(void* userdata, Uint8* stream, int len);
 
    void setVolume(float volume);
 
    void setMute(bool mute);
 
    void flush();
 
private:
    friend class FFmpegPlayer; // Allow FFmpegPlayer to access private members
    FFmpegPlayer* player_;              
    AVCodecContext* audioCodecContext_; 
    AVFrame* audioFrame_;               
    AVPacket* audioPacket_;             
    SwrContext* swrContext_;            
    AVAudioFifo* audioFifo_;            
    int audioStreamIndex_;              
    SDL_AudioDeviceID audioDevice_;     
    SDL_AudioSpec audioSpec_;           
    float currentVolume_;               
    bool isMuted_;                      
 
    void cleanup();
};
 
#endif // AUDIO_DECODER_H