al_create_mixer
ALLEGRO_MIXER *al_create_mixer(unsigned int freq,
ALLEGRO_AUDIO_DEPTH depth, ALLEGRO_CHANNEL_CONF chan_conf)
Creates a mixer stream, to attach sample streams or other mixers to. It will mix into a buffer at the requested frequency and channel count.
The only supported audio depths are ALLEGRO_AUDIO_DEPTH_FLOAT32 and ALLEGRO_AUDIO_DEPTH_INT16 (not yet complete).
Returns true on success, false on error.
See also: al_destroy_mixer
Examples: ex_acodec, ex_acodec_multi, ex_mixer_chain, ex_mixer_pp, ex_stream_file
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