[alsa-devel] snd_pcm_open device names

Reiner reiner1210 at googlemail.com
Thu Mar 6 19:34:16 CET 2008

Thanks! But if I try "asym" open fails, where can I see what "default" 
is? There is no ~/.asoundrc and in /etc there is only asound.state.
By the way I'am looking for a function to adjust the volume of the 
stream, any idea


Eliot Blennerhassett schrieb:
> On Thursday 06 March 2008 12:33:54 Reiner wrote:
>> with
>> snd_pcm_open (handle, "default", SND_PCM_STREAM_PLAYBACK, 0)
>> I can open a device twice
>> with
>> snd_pcm_open (handle, "plughw:0,0", SND_PCM_STREAM_PLAYBACK, 0)
>> the 2. call fails with error -16.
>> The docu says:
>> The default device is equal to plug plugin with hw plugin as slave.
> Probably the doc is in error. The default device these days is usually asym 
> (dmix+dsnoop) which allows the multiple opens.
> --
> Eliot
> www.audioscience.com
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