al_set_audio_stream_gain(3)                        al_set_audio_stream_gain(3)

NAME
       al_set_audio_stream_gain - Allegro 5 API

SYNOPSIS
              #include <allegro5/allegro_audio.h>

              bool al_set_audio_stream_gain(ALLEGRO_AUDIO_STREAM *stream, float val)

DESCRIPTION
       Set the playback gain of the stream.

       Returns true on success, false on failure.  Will fail if the audio
       stream is attached directly to a voice.

SEE ALSO
       al_get_audio_stream_gain(3).

Allegro reference manual                           al_set_audio_stream_gain(3)