At Wed, 29 Nov 2006 11:41:13 +0100, Erik Slagter wrote: > > >>>>>> Maybe I am using the wrong "hw", there is also a "hw:0,2" device, which > >>>>>> I cannot make work properly at all (only one channel is output, large > >>>>>> chunks are discarded, much much clipping). > >>>>> The first PCM device is for the multi-output PCM. It's for both > >>>>> analog and digital. The dedicated SPDIF is the secondary one. > >>>> But why does the second interface gives _some_ (although wrong) output > >>>> on my spdif output then? > >>> No idea, possibly wrong parameters are passed. > >> By whom or what? Actually I don't care that much, but it looks like a > >> bug to me. > > Possibly. But too little information to analyze. > > I think you're misunderstanding me here. > > aplay -Dhw:0,0 sample.wav gives valid sound through spdif (though > limited), but aplay -Dhw:0,1 gives garbage on the same spdif output. > That doesn't look like an issue of aplay or the alsa lib, but a driver > issue. Ok, now I get to know about your tests, which program you used :) Still I don't know what is sample.wav, though. It's 48kHz? You can try -Dspdif, too, BTW. There shouldn't be much difference between hw:0,0 and hw:0,1 regarding SPDIF setup. Build with --with-debug=detect, and see the kernel messages whether the driver sets different parameters to the digital audio-output widget. Also, you can compare the proc file content between two states, i.e. during aplay -Dhw:0,0 and -Dhw:0,2. In addition, check the parameters printed via aplay -v option to see whether they are identical. > >> [ rate bitfields in proc #codec# output ] > > Try HG version, and you'll see what they mean better. > > The driver version in the kernel is kind of recent, Not recent enough. Try HG version, really. Takashi ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
