al_get_mixer_attached - Man Page

#include <allegro5/allegro_audio.h>

bool al_get_mixer_attached(const ALLEGRO_MIXER *mixer)

Return true if the mixer is attached to something.

al_attach_sample_instance_to_mixer(3), al_attach_audio_stream_to_mixer(3), al_attach_mixer_to_mixer(3), al_detach_mixer(3)