.\" Automatically generated by Pandoc 3.1.12.1 .\" .TH "al_set_mixer_postprocess_callback" "3" "" "Allegro reference manual" "" .SH NAME al_set_mixer_postprocess_callback \- Allegro 5 API .SH SYNOPSIS .IP .EX #include \f[B]\f[R] bool al_set_mixer_postprocess_callback(ALLEGRO_MIXER *mixer, void (*pp_callback)(void *buf, unsigned int samples, void *data), void *pp_callback_userdata) .EE .SH DESCRIPTION Sets a post\-processing filter function that\[cq]s called after the attached streams have been mixed. The buffer\[cq]s format will be whatever the mixer was created with. The sample count and user\-data pointer is also passed. .RS .PP \f[I]Note:\f[R] The callback is called from a dedicated audio thread. .RE