audiooutputaudiotrack.h

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#ifndef AUDIOOUTPUTAUDIOTRACK_H
#define AUDIOOUTPUTAUDIOTRACK_H
 
#include "audiooutputbase.h"
 
class QAndroidJniObject;
/*
 
    Audio output for android based on android.media.AudioTrack.
 
    This uses the java class org.mythtv.audio.AudioOutputAudioTrack
    to invoke android media playback methods.
 
*/
 
class AudioOutputAudioTrack : public AudioOutputBase
{
  public:
    explicit AudioOutputAudioTrack(const AudioSettings &settings);
    ~AudioOutputAudioTrack() override;
 
    bool AddData(void *buffer, int len, std::chrono::milliseconds timecode, int frames) override; // AudioOutput
    void Pause(bool paused) override; // AudioOutput
    void SetSourceBitrate(int rate) override; // AudioOutputBase
 
  protected:
    bool OpenDevice(void) override; // AudioOutputBase
    void CloseDevice(void) override; // AudioOutputBase
    void WriteAudio(unsigned char *aubuf, int size) override; // AudioOutputBase
    int  GetBufferedOnSoundcard(void) const override; // AudioOutputBase
    AudioOutputSettings* GetOutputSettings(bool digital) override; // AudioOutputBase
    bool StartOutputThread(void) override; // AudioOutputBase
    void StopOutputThread(void) override; // AudioOutputBase
 
    // Volume control
    int GetVolumeChannel(int /* channel */) const override // VolumeBase
        { return 100; }
    void SetVolumeChannel(int /* channel */, int /* volume */) override // VolumeBase
        {}
 
  private:
    QAndroidJniObject *m_audioTrack {nullptr};
    int m_bitsPer10Frames {0};
};
 
#endif //AUDIOOUTPUTAUDIOTRACK_H