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 *  By downloading, copying, installing or using the software you agree to this license.
 *  If you do not agree to this license, do not download, install, 
 *  copy or use the software.
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 *
 *  Redistribution and use in binary forms, with or without modification, are permitted.
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 *  Unless required by applicable law or agreed to in writing, software distributed 
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#ifndef AUDIO_DECODER_H
#define AUDIO_DECODER_H

#include "sys_inc.h"
#include "media_format.h"

extern "C"
{
#include "libavcodec/avcodec.h"
#include "libavutil/avutil.h"
#include "libswscale/swscale.h"
#include "libavformat/avformat.h"
#include <libswresample/swresample.h>
}

typedef void (*ADCB)(AVFrame * frame, void * userdata);

class CAudioDecoder
{
public:
    CAudioDecoder();
    ~CAudioDecoder();

    BOOL        init(int codec, int samplerate, int channels, int bitpersample = 0);
    BOOL        init(enum AVCodecID codec, int samplerate, int channels, int bitpersample = 0);
    void        uninit();
    
    BOOL        decode(uint8 * data, int len, int64_t pts = AV_NOPTS_VALUE);
    BOOL        decode(AVPacket *pkt);
    void        setCallback(ADCB pCallback, void * pUserdata) {m_pCallback = pCallback; m_pUserdata = pUserdata;}

private:
    void        flush();    
    void        render(AVFrame * frame);
    
private:
    BOOL			m_bInited;
    int             m_nSamplerate;
    int             m_nChannels;

    AVCodec *       m_pCodec;
    AVCodecContext* m_pContext;
    AVFrame *       m_pFrame;
    AVFrame *       m_pResampleFrame;
    SwrContext *    m_pSwrCtx;
    AVSampleFormat  m_nDstFormat;
    
    ADCB            m_pCallback;
    void *          m_pUserdata;    
};

#endif