namespace cyberdog_audio
{
#define DELAY_CHECK_TIME 1000
#define DEFAULT_PLAY_CHANNEL_NUM 4
#define DEFAULT_VOLUME MIX_MAX_VOLUME

#define AUDIO_FREQUENCY 16000
#define AUDIO_FORMAT MIX_DEFAULT_FORMAT
#define AUDIO_CHANNELS 1
#define AUDIO_CHUCKSIZE 2048

using callback = std::function<void (void)>;

class AudioPlayer
{
public:
  explicit AudioPlayer(
    int channel,
    callback finish_callback = nullptr,
    int volume_group = INDE_VOLUME_GROUP,
    int volume = DEFAULT_VOLUME);
  static int GetFreeChannel();
  static bool InitSuccess();

  static bool OpenReference();
  static void CloseReference();
  static int GetReferenceData(Uint8 * buff, int need_size);
  static size_t GetReferenceDataSize();

  void SetFinishCallBack(callback finish_callback);
  int SetVolume(int volume);
  void SetVolumeGroup(int volume_gp);
  int GetVolume();

  void AddPlay(Uint8 * buff, int len);
  void AddPlay(const char * file);
  void StopPlay();
  bool IsPlaying();
  bool InitReady();
};
}

AudioPlayer(
  int channel,
  callback finish_callback = nullptr,
  int volume_group = INDE_VOLUME_GROUP,
  int volume = DEFAULT_VOLUME);

static int GetFreeChannel();

static bool InitSuccess();

static bool OpenReference();