extern int hb_audio_mixdowns_count;
int hb_mixdown_get_mixdown_from_short_name( const char * short_name );
const char * hb_mixdown_get_short_name_from_mixdown( int amixdown );
+int hb_get_best_mixdown( uint32_t codec, int layout );
+int hb_get_default_mixdown( uint32_t codec, int layout );
int hb_find_closest_audio_bitrate(int bitrate);
void hb_get_audio_bitrate_limits(uint32_t codec, int samplerate, int mixdown, int *low, int *high);
int hb_get_best_audio_bitrate( uint32_t codec, int bitrate, int samplerate, int mixdown);