Someone

typedef enum audio_format_t {
  AUDIO_FMT_U8 = 0,
  AUDIO_FMT_S8,
  AUDIO_FMT_U16LSB,
  AUDIO_FMT_S16LSB,
  AUDIO_FMT_U16MSB,
  AUDIO_FMT_S16MSB,
  AUDIO_FMT_U16,
  AUDIO_FMT_S16,
  AUDIO_FMT_FLOAT,
  AUDIO_FMT_HW_AC3,
} audio_format_t;

#endif /* __MPEG4IP_INCLUDED__ */