At Mon, 21 Jan 2008 12:27:18 +0100, Christophe Osuna wrote: > > Tobin, thanks for all the information you provided. > > 2008/1/18, Tobin Davis <tdavis@xxxxxxxxxxxx>: > > Yes, it "should". But it also depends on the physical wiring of your system. If you have a system with only 3 audio jacks in the back, it is very difficult to have surround sound & 3 inputs at the same time. > > I have plenty of jacks, including one "Mic", one "Front Mic" and one "Line In". > > > 2008/1/18, Takashi Iwai <tiwai@xxxxxxx>: > > Just deeper looking at the code, I found it's indeed buggy for the > > secondary ADCs. The patch below should fix it. > > > > The second and third ADCs are assigned to PCM#2 while the first ADC is > > to PCM#0. This is for avoiding the confusion of dsnoop and > > multi-streams. > > > > Give it a try and check whether it doesn't break, at least, for > > recording the first ADC. If it's OK, I'll apply it to the HG tree > > later. > > Thanks for the patch. Applying it did seem to solve the problem; now I > can use the three ADC that are mapped to hw:0,0,0 hw:0,2,0 and > hw:0,2,1. I have successfully tested the following commands > > arecord -f dat -D hw:0,0,0 | aplay -f dat -D hw:0,0,0 > arecord -f dat -D hw:0,2,0 | aplay -f dat -D hw:0,0,0 > arecord -f dat -D hw:0,2,1 | aplay -f dat -D hw:0,0,0 > > It wasn't necessary to override the "substream" value in > "alc880_pcm_analog_alt_capture" (I suppose that both analog_capture > and analog_alt_capture are used). Just because it's two coindentally :) > Now I need to check that I can open > the three at the same time but I am rather confident on this. Thanks. Please let me know if it works. Then I'll apply the patch to HG tree. > Could you also tell me where I have to change code in order to force > the 8 kHz sampling rate? I will try to add an ugly change to > snd_hda_query_supported_pcm() but I am not sure on whether this is the > right place. You can override the info->streams[SNDRV_PCM_STREAM_CAPTURE].rates in alc_build_pcms(). It's zero as default, which means to probe the value from the codec. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
