To add additional, freely named ALSA PCMs to Pd's device dropdown list use the "-alsaadd" command line option. For example say you have a custom PCM defined in your .asoundrc like this:
hi, I have a pcm.quattro device defined in .asoundrc which bind 2 stereo devices to allow quad sound. And I can even get it to work(*). But:
When I try to add it to pd it is only listed in the input devices: $ pd -alsa -alsaadd quattro -listdev
input devices:
- USB Audio Quattro (hardware)
- USB Audio Quattro (plug-in)
- HDA Intel (hardware)
- HDA Intel (plug-in)
- quattro
output devices:
- USB Audio Quattro (hardware)
- USB Audio Quattro (plug-in)
- HDA Intel (hardware)
- HDA Intel (plug-in)
When I try to actually use it it fails with: output snd_pcm_delay failed: Input/output error astate 0 audio I/O stuck... closing audio
SImilarly when I try with: -audioin 3 audioout 5
Somehow pd doesn't like it, any ideas why?
thanks Oded
(*) I am able to use the quattro device to play quad sound with clm/snd. No problems there. Sound playback is with sndplay and by setting MUS_ALSA_DEVICE=quattro it works.