- for (i = 0; i < num_tracks; i++) {
- unsigned char *buf = NULL;
- unsigned buf_size = 0;
-
- mp4_get_decoder_config(mp4, i, &buf, &buf_size);
- if (buf) {
- mp4AudioSpecificConfig masc;
- rc = NeAACDecAudioSpecificConfig(buf, buf_size, &masc);
- free(buf);
- if (rc < 0)
- continue;
+ for (i = 0; i < num_tracks; i++)
+ if (mp4_is_audio_track(mp4, i))