linux-arkmicro/buildroot-external/package/carlink/include/user/AudioDecoder.h

#ifndef AUDIODECODER_H
#define AUDIODECODER_H

#include "alsa/asoundlib.h"
#include "Thread.h"
//媒体参数
struct AudioParam
{
    uint rate;           //采样率Hz
    uint bits;           //位数8、16
    uint channels;       //通道数
};

class AudioDecoder
{
public:
    AudioDecoder(const char *device = "default");
    virtual ~AudioDecoder();

public:
    void setMediaParam(const uint rate, const uint bits, const uint channels);

    void release();
    int  playSound(unsigned char *data, uint len);
    void stopPlaySound() {
        mStopAudio = true;
    }
    void resumePlaySound() {
        mStopAudio = false;
    }

private:

    bool Init();
    void Uninit();
    int xrunRecover(snd_pcm_t *handle, int err);
private:
     char           *mpDevice;
     snd_pcm_t      *mpHandle;
     AudioParam      mAudioParam;
     bool            mStopAudio;
     Semaphore        mSemaphore;

};

#endif // AUDIODECODER_H