Val, with this .asoundrc file I could make my M-Audio Fast Track Pro work
(see my post on this list one week ago) with two simultaneous and
independent stereo channels. It is a single device but the system recognizes
it as two separate usb audio devices. Hope it helps you.
>>> /home/rodrigo/.asoundrc:
pcm.ftpro {
@args [ CARD DEV ]
@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
}
}
}
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
}
slaves.a.channels 2;
slaves.b.pcm {
type hw
card $CARD
device { @func iadd integers [ $DEV 1 ] }
}
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;
}
# sometimes apps need matching ctl device
ctl.ttable4 {
@args [ CARD DEV ]
@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
}
}
}
type hw;
card $CARD;
}
>>>
Then I point to the device as ftpro:1,0. Maybe you'll need to point to two
different cards using @func iadd integers [ $CARD 1 ] }. Or maybe just
forget about the $ flags and just hard code the card and device numbers.
Rodrigo
On Fri, Nov 28, 2008 at 5:36 AM, Val <[EMAIL PROTECTED]> wrote:
> On Fri, 2008-28-11 at 01:22 -0600, Val wrote:
> > I thought that 'aplay -Dboth test.wav' would do what I want with the
> > above config, but I only get sound on the nforce card.
>
> oh, yes, I just remembered to add - the verbose output of aplay looks
> correct to me, which makes this even more puzzling:
>
> aplay -Dboth -v test.wav
> ------------
> Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz,
> Stereo
> Route conversion PCM
> Transformation table:
> 0 <- 0
> 1 <- 1
> 2 <- 0
> 3 <- 1
> Its setup is:
> stream : PLAYBACK
> access : RW_INTERLEAVED
> format : S16_LE
> subformat : STD
> channels : 2
> rate : 44100
> exact rate : 44100 (44100/1)
> msbits : 16
> buffer_size : 6552
> period_size : 1638
> period_time : 37142
> tick_time : 4000
> tstamp_mode : NONE
> period_step : 1
> sleep_min : 0
> avail_min : 1638
> xfer_align : 1638
> start_threshold : 6552
> stop_threshold : 6552
> silence_threshold: 0
> silence_size : 0
> boundary : 1717567488
> Slave: Multi PCM
> Channel bindings:
> 0: slave 0, channel 0
> 1: slave 0, channel 1
> 2: slave 1, channel 0
> 3: slave 1, channel 1
> Its setup is:
> stream : PLAYBACK
> access : MMAP_NONINTERLEAVED
> format : S16_LE
> subformat : STD
> channels : 4
> rate : 44100
> exact rate : 44100 (44100/1)
> msbits : 16
> buffer_size : 6552
> period_size : 1638
> period_time : 37142
> tick_time : 4000
> tstamp_mode : NONE
> period_step : 1
> sleep_min : 0
> avail_min : 1638
> xfer_align : 1638
> start_threshold : 6552
> stop_threshold : 6552
> silence_threshold: 0
> silence_size : 0
> boundary : 1717567488
> Slave #0: Plug PCM: Route conversion PCM (sformat=S32_LE)
> Transformation table:
> 0 <- 0
> 1 <- 1
> 2 <- none
> 3 <- none
> 4 <- none
> 5 <- none
> 6 <- none
> 7 <- none
> 8 <- none
> 9 <- none
> Its setup is:
> stream : PLAYBACK
> access : MMAP_INTERLEAVED
> format : S16_LE
> subformat : STD
> channels : 2
> rate : 44100
> exact rate : 44100 (44100/1)
> msbits : 16
> buffer_size : 6552
> period_size : 1638
> period_time : 37142
> tick_time : 4000
> tstamp_mode : NONE
> period_step : 1
> sleep_min : 0
> avail_min : 1638
> xfer_align : 1638
> start_threshold : 6552
> stop_threshold : 6552
> silence_threshold: 0
> silence_size : 0
> boundary : 1717567488
> Slave: Hardware PCM card 0 'M Audio Audiophile 24/96' device 0 subdevice
> 0
> Its setup is:
> stream : PLAYBACK
> access : MMAP_INTERLEAVED
> format : S32_LE
> subformat : STD
> channels : 10
> rate : 44100
> exact rate : 44100 (44100/1)
> msbits : 24
> buffer_size : 6552
> period_size : 1638
> period_time : 37142
> tick_time : 4000
> tstamp_mode : NONE
> period_step : 1
> sleep_min : 0
> avail_min : 1638
> xfer_align : 1638
> start_threshold : 6552
> stop_threshold : 6552
> silence_threshold: 0
> silence_size : 0
> boundary : 1717567488
> Slave #1: Plug PCM: Hardware PCM card 1 'NVidia nForce2' device 0
> subdevice 0
> Its setup is:
> stream : PLAYBACK
> access : MMAP_INTERLEAVED
> format : S16_LE
> subformat : STD
> channels : 2
> rate : 44100
> exact rate : 44100 (44100/1)
> msbits : 16
> buffer_size : 6552
> period_size : 1638
> period_time : 37142
> tick_time : 4000
> tstamp_mode : NONE
> period_step : 1
> sleep_min : 0
> avail_min : 1638
> xfer_align : 1638
> start_threshold : 6552
> stop_threshold : 6552
> silence_threshold: 0
> silence_size : 0
> boundary : 1717567488
> ------------
>
>
>
>
>
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--
Rodrigo Rodrigues da Silva
Engenharia de Computação - Coop8
"Free software is defined as software that respects four fundamental
freedoms: (0) freedom to run the software as you wish, (1) freedom to study
the source code and modify it to do what you wish, (2) freedom to make and
redistribute copies, and (3) freedom to publish modified versions." Richard
Stallman
"Não importa como morre o home, importa como vive." Carijó, velho do rio.
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