At 10:03 AM 9/19/2007, Clemens Ladisch wrote:
Steve Strobel wrote:
At 12:46 AM 9/19/2007, Clemens Ladisch wrote:
or did you create a card-specific .conf file for your controller?
Not intentionally, but there might be one left over from the AD1836 driver I started with (I have just been modifying that driver, planning to rename it after I get it working). Where would I look for such a file?
In /usr/share/alsa/cards/, with the driver name.
I don't have a file there; that directory doesn't even exist:
root:/mnt/Blackfin/Sound Files> ls /usr/share sounds terminfo
Should I have a configuration file in one of those places? If I don't, where do the default values come from? My version of ALSA:
root:/mnt/Blackfin/Sound Files> cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.12rc1 (Thu Jun 22 13:55:50 2006 UTC).
Does it work when running aplay with the parameter "-D plughw"?
No. It searches through more rules, but still says, "Sample format non available". I put a log of the console output with and without "-D plughw" at http://link-comm.com/temp/aplay-log.txt to save bandwidth.
One thing I hadn't noticed before is the message:
ALSA lib ../../../src/pcm/pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable refine done - result = -22
Does a result code of -22 mean anything significant?
You wrote in an earlier message:> > snd_pcm_hw_refine()
ACCESS = 00000000ffffffffffffffff -> 0000000000000008 FORMAT = 0000000000000400 -> 0000000000000000
aplay tries to set S32_LE, but the driver doesn't accept it.
I think I understand how the driver uses the snd_pcm_hardware_t structure to tell ALSA what it supports, but I don't understand how ALSA tries to set things in return. I am surprised that it would try to set it to a data type that the driver never said it could support. I suppose I could make the driver accept either S32 or U32, detect which mode ALSA is trying to use, and do the conversion in the driver, but I though that was what plughw was supposed to do.
Regards, Clemens
Thanks, Steve
--- Steve Strobel Link Communications, Inc. 1035 Cerise Rd Billings, MT 59101-7378 (406) 245-5002 ext 102 (406) 245-4889 (fax) WWW: http://www.link-comm.com MailTo:steve.strobel@link-comm.com