On Mon, 28 Jan 2002, Erik Mouw wrote: > Hi all, > > I don't get any sound from the S/PDIF output of my M-Audio Audiophile > 24/96 when using ALSA native mode. This is what I tried: > > madplay -o raw:- test.mp3 | aplay -c 2 -f S16_LE -r 44100 -D plughw:1 > > This gives only sound output on the analog output (the Audiophile is > the second sound card, the first card is a SB AWE64 Gold which I use > for desktop audio). If I try to select a second output, it simply > doesn't work: > > madplay -o raw:- test.mp3 | aplay -c 2 -f S16_LE -r 44100 -D plughw:1,1 > ALSA lib pcm_hw.c:597:(snd_pcm_hw_open) open /dev/snd/pcmC1D1p failed: No such >file or directory > aplay: main:446: audio open error: No such file or directory > > However, S/PDIF output works perfectly with OSS emulation: > > madplay -o /dev/dsp1 test.mp3 > > The manual shows that the Windows drivers make a difference between the > analog and S/PDIF output, so I expect that ALSA can do the same. Could > somebody shed a light on this before I dig up a datasheet and hack the > driver myself?
Because ICE1712 chip offers 10-channel playback for professional PCM device, you need to specify the channel conversion policy for alsa-lib to convert standard stereo stream for hardware format. Plugins are described here (or in alsa-lib/doc/asoundrc.txt): http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html#pcm_plugins Look for 'Automatic conversion plugin' and 'route_policy' keyword. More information about configuration files can be found at http://www.alsa-project.org/alsa-doc/alsa-lib/ page. Jaroslav ----- Jaroslav Kysela <[EMAIL PROTECTED]> SuSE Linux http://www.suse.com ALSA Project http://www.alsa-project.org _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
