from audio_if.h:35
enum
{
AUDIO_RECORDER_IDLE = 0,
AUDIO_RECORDER_SUSPENDED = 1,
AUDIO_RECORDER_RECORDING = 2,
AUDIO_RECORDER_PLAYING = 3,
AUDIO_RECORDER_RECORD_PAUSE = 4,
AUDIO_RECORDER_PLAY_PAUSE = 5,
AUDIO_RECORDER_RECORD_EOF = 6,
AUDIO_RECORDER_PLAY_EOF = 7,
AUDIO_RECORDER_ERROR = 0xFF,
};