-static int32_t aac_afh_get_track(struct mp4 *mp4)
-{
- int32_t i, num_tracks = mp4_get_total_tracks(mp4);
-
- assert(num_tracks >= 0);
- for (i = 0; i < num_tracks; i++)
- if (mp4_is_audio_track(mp4, i))
- return i;
- return -E_MP4_TRACK; /* no audio track */
-}
-