On Tuesday 18 November 2008 11:45:51 Jens M Andreasen wrote:
> When I connect to hw:0,0 the first application will grab hw:0,0,0 the
> next application will grab hw:0,0,1 and the third application will grab
> hw:0,0,2 ("mic", "front mic" and "line in" assuming this is the order
> they are selected in the mixer app)
My mental model of this is that each subdevice represents a separate (stereo)
ADC. (BTW The ordering of hw0,0,[0,1,2] may be independent of the order of
those controls in the mixer app)
> How do I do to make jackd understand that it should open all three of
> them instead of only one?
As long as they all run from the same clock, you can create a 6
channel 'device' in your .asoundrc
Two examples follow.
The first is parameterised on card/dev/subdev
Eg ttable4:1,2,3 will use card1, device2, link subdevices 3 and 4 into a 4
channel stream.
The second is 16 channel with only card as a parameter. Always uses device0,
subdevices 0..7 (You can cut this one down to make your 6 channel device)
use it like: jackd -d alsa -C ttable16
Sorry I don't know how to make it less verbose, or how to make the number of
channels parameterisable.
regards
-- Eliot Blennerhassett http://www.audioscience.com # This creates a 4 channel interleaved pcm stream based on # the multi device. JACK will work with this one. pcm.ttable4 { @args [ CARD DEV SUBDEV ] @args.CARD { type string default { @func getenv vars [ ALSA_PCM_CARD ALSA_CARD ] default { @func refer name defaults.pcm.card } } } @args.DEV { type integer default { @func igetenv vars [ ALSA_PCM_DEVICE ] default { @func refer name defaults.pcm.device } } } @args.SUBDEV { type integer default 0 } type route; hint { show { @func refer name defaults.namehint.basic } description "4 channel multi route" } slave.pcm { type multi; slaves.a.pcm { type hw card $CARD device $DEV subdevice $SUBDEV #mmap_emulation true } slaves.a.channels 2; slaves.b.pcm { type hw card $CARD device $DEV subdevice { @func iadd integers [ $SUBDEV 1 ] } #mmap_emulation true } slaves.b.channels 2; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; bindings.2.slave b; bindings.2.channel 0; bindings.3.slave b; bindings.3.channel 1; } ttable.0.0 1; ttable.1.1 1; ttable.2.2 1; ttable.3.3 1; } # see above. ctl.ttable4 { @args [ CARD DEV SUBDEV ] @args.CARD { type string default { @func getenv vars [ ALSA_PCM_CARD ALSA_CARD ] default { @func refer name defaults.pcm.card } } } @args.DEV { type integer default { @func igetenv vars [ ALSA_PCM_DEVICE ] default { @func refer name defaults.pcm.device } } } @args.SUBDEV { type integer default 0 } type hw; card $CARD; } # This creates a 16 channel interleaved pcm stream based on # the multi device. JACK will work with this one. pcm.ttable16 { @args [ CARD ] @args.CARD { type string default { @func getenv vars [ ALSA_PCM_CARD ALSA_CARD ] default { @func refer name defaults.pcm.card } } } hint { show { @func refer name defaults.namehint.basic } description "16 channel multi route" } type route; slave.pcm { type multi; slaves.a.pcm { type hw card $CARD device 0 subdevice 0 } slaves.a.channels 2; slaves.b.pcm { type hw card $CARD device 0 subdevice 1 } slaves.b.channels 2; slaves.c.pcm { type hw card $CARD device 0 subdevice 2 } slaves.c.channels 2; slaves.d.pcm { type hw card $CARD device 0 subdevice 3 } slaves.d.channels 2; slaves.e.pcm { type hw card $CARD device 0 subdevice 4 } slaves.e.channels 2; slaves.f.pcm { type hw card $CARD device 0 subdevice 5 } slaves.f.channels 2; slaves.g.pcm { type hw card $CARD device 0 subdevice 6 } slaves.g.channels 2; slaves.h.pcm { type hw card $CARD device 0 subdevice 7 } slaves.h.channels 2; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; bindings.2.slave b; bindings.2.channel 0; bindings.3.slave b; bindings.3.channel 1; bindings.4.slave c; bindings.4.channel 0; bindings.5.slave c; bindings.5.channel 1; bindings.6.slave d; bindings.6.channel 0; bindings.7.slave d; bindings.7.channel 1; bindings.8.slave e; bindings.8.channel 0; bindings.9.slave e; bindings.9.channel 1; bindings.10.slave f; bindings.10.channel 0; bindings.11.slave f; bindings.11.channel 1; bindings.12.slave g; bindings.12.channel 0; bindings.13.slave g; bindings.13.channel 1; bindings.14.slave h; bindings.14.channel 0; bindings.15.slave h; bindings.15.channel 1; } ttable.0.0 1; ttable.1.1 1; ttable.2.2 1; ttable.3.3 1; ttable.4.4 1; ttable.5.5 1; ttable.6.6 1; ttable.7.7 1; ttable.8.8 1; ttable.9.9 1; ttable.10.10 1; ttable.11.11 1; ttable.12.12 1; ttable.13.13 1; ttable.14.14 1; ttable.15.15 1; } # see above. ctl.ttable16 { @args [ CARD ] @args.CARD { type string default { @func getenv vars [ ALSA_PCM_CARD ALSA_CARD ] default { @func refer name defaults.pcm.card } } } type hw; card $CARD; } _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@email-addr-hidden http://lists.linuxaudio.org/mailman/listinfo/linux-audio-devReceived on Wed Nov 19 00:15:05 2008
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