The following issue has been RESOLVED. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=842> ====================================================================== Reported By: roothorick Assigned To: ====================================================================== Project: ALSA - lib Issue ID: 842 Category: 1_pcm - digital audio Reproducibility: always Severity: crash Priority: normal Status: resolved Resolution: fixed Fixed in Version: ====================================================================== Date Submitted: 01-22-2005 19:40 CET Last Modified: 08-06-2006 01:37 CEST ====================================================================== Summary: plug:multi:ladspa chain causes "aplay: pcm_params.c:146: snd_pcm_hw_param_get_min: Assertion `!snd_interval_empty(i)' failed." Description: For reference, my primary soundcard has a CMI8738 chipset with two DACs. My .asoundrc contains the following PCM definitions: pcm.pfront { type plug slave.pcm "front" } pcm.prear { type plug slave.pcm "rear" } pcm.prearinv { type plug slave.pcm { type ladspa slave.pcm "prear" plugins [ { label inv } ] } } pcm.surround40fixbass { type multi slaves.0.pcm "pfront" slaves.0.channels 2 slaves.1.pcm "prearinv" slaves.1.channels 2 bindings [ { slave 0; channel 0 } { slave 0; channel 1 } { slave 1; channel 0 } { slave 1; channel 1 } ] master 0 } pcm.psurround40fixbass { type plug slave.pcm "surround40fixbass" } Using MPlayer, I created two .wav files for test purposes: test-2ch.wav (2 channels), and test-4ch.wav (4 channels). I then attempted several different tests (I'm posting the most notable here): roothorick@prodigy ~/tmp $ aplay -D pfront test-2ch.wav Playing WAVE 'test-2ch.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo # Sound plays from front speakers. Expected behavior. roothorick@prodigy ~/tmp $ aplay -D prearinv test-2ch.wav Playing WAVE 'test-2ch.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo # Sound plays from rear speakers. Expected behavior. roothorick@prodigy ~/tmp $ aplay -D surround40 test-4ch.wav Playing WAVE 'test-4ch.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Channels 4 # Sound plays from all four speakers. Expected behavior. roothorick@prodigy ~/tmp $ aplay -D surround40fixbass test-4ch.wav Playing WAVE 'test-4ch.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Channels 4 # Sound plays from only front speakers. Was expecting sound from all four speakers. roothorick@prodigy ~/tmp $ aplay -D psurround40fixbass test-4ch.wav Playing WAVE 'test-4ch.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Channels 4 aplay: pcm_params.c:146: snd_pcm_hw_param_get_min: Assertion `!snd_interval_empty(i)' failed. Aborted by signal Aborted... # No sound is ever produced. Was expecting sound from all four speakers. ====================================================================== ---------------------------------------------------------------------- roothorick - 03-25-06 22:36 ---------------------------------------------------------------------- Still happens with ALSA lib 1.0.11rc3. This was tested on a different card however (SB PCI 512 -- emu10k1). ---------------------------------------------------------------------- tiwai - 04-20-06 15:40 ---------------------------------------------------------------------- I fixed some bugs regarding multi plugin recently, so hopefully it got fixed in 1.0.11-final. Issue History Date Modified Username Field Change ====================================================================== 01-22-05 19:40 roothorick New Issue 01-22-05 19:42 roothorick Note Added: 0003377 05-30-05 13:42 perex Category ordinary pcm => pcm - digital audio 03-22-06 04:27 rlrevell Note Added: 0008840 03-25-06 22:36 roothorick Note Added: 0008953 04-20-06 15:40 tiwai Note Added: 0009390 08-06-06 01:37 Adrian Bunk Status new => resolved 08-06-06 01:37 Adrian Bunk Resolution open => fixed ====================================================================== ------------------------------------------------------------------------- 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
