The volume level of a track in a MIDI stream.
BASS_ChannelSetAttribute( HSTREAM handle, BASS_ATTRIB_MIDI_TRACK_VOL + track, float volume );
|handle||The MIDI stream handle.|
|track||The track to set the volume of... 0 = first track.|
|volume||The volume level... 0 = silent, 1.0 = normal/default.|
During playback, the effect of changes to this attribute are not heard instantaneously, due to buffering. To reduce the delay, use the BASS_CONFIG_BUFFER config option to reduce the buffer length.
This attribute can also be used to count the number of tracks in a MIDI file stream. MIDI streams created via BASS_MIDI_StreamCreate do not have any tracks.
int tracks=0; float dummy; while (BASS_ChannelGetAttribute(handle, BASS_ATTRIB_MIDI_TRACK_VOL+tracks, &dummy)) tracks++;
BASS_ChannelGetAttribute, BASS_ChannelSetAttribute, BASS_ChannelSlideAttribute