Topic: MP3 and MIDI tracks

[dilmar]

hi, do you know how to enable and disable tracks in Bass and BassMidi?

[Ian @ un4seen]

Please clarify what you mean by "enable and disable". If you mean muting, you can set a stream's BASS_ATTRIB_VOL value to 0 via BASS_ChannelSetAttribute for that. You can then set it back to 1.0 (or whatever level you want) to unmute.

Code: [Select]

BASS_ChannelSetAttribute(handle, BASS_ATTRIB_VOL, 0); // mute
...
BASS_ChannelSetAttribute(handle, BASS_ATTRIB_VOL, 1); // unmute


[dilmar]

Hi Jan, by tracks I mean the instruments (flute, guitar, bass, .....)

[Ian @ un4seen]

It isn't possible to mute individual instruments in MP3 files but you can mute them in MIDI files with the MIDI_EVENT_MIXLEVEL event. You would first need to know which MIDI channel the instrument is in, and then you can mute/unmute it like this:

Code: [Select]

BASS_MIDI_StreamEvent(handle, midichan, MIDI_EVENT_MIXLEVEL, 0); // mute
...
BASS_MIDI_StreamEvent(handle, midichan, MIDI_EVENT_MIXLEVEL, 100); // unmute

Please see the BASS_MIDI_StreamEvent documentation for details.

[dilmar]

thank you Jan.