At Wed, 8 Oct 2003 13:08:38 +0200 (CEST), Jaroslav wrote: > > On Tue, 7 Oct 2003, James Courtier-Dutton wrote: > > > Takashi Iwai wrote: > > > At Tue, 07 Oct 2003 18:00:22 +0100, > > > James Courtier-Dutton wrote: > > > > > >>I have 2 sound cards, card 0 is the motherboard intel/alc650 one, and > > >>card 1 is a SB Audigy2 > > >> > > >>Playing two streams at once on device "front:1" works: - > > >>aplay -D front:1 filename.wav > > >>aplay -D front:1 filename.wav > > >>So, this is playing two files to the SB Audigy2 front speakers. > > >>I can hear the two files being mixed together and output together to a > > >>single set of speakers. > > >> > > >>Playing two streams at once on device "rear:1" fails: - > > >>aplay -D rear:1 filename.wav > > >>aplay -D rear:1 filename.wav > > >>So, this is trying to play two files to the SB Audigy2 rear speakers. > > >> > > >>The first files comes out of the rear speakers, but the output from the > > >>second aplay command fails with: - > > >> > > >>bash-2.05b# aplay -D rear:1 filename.wav > > >>Playing WAVE 'filename.wav' : Signed 16 bit Little Endian, Rate 44100 > > >>Hz, Stereo > > >>ALSA lib setup.c:94:(snd_sctl_install) Cannot lock ctl elem > > >>aplay: set_params:876: Unable to install hw params: > > >>ACCESS: RW_INTERLEAVED > > >>FORMAT: S16_LE > > >>SUBFORMAT: STD > > >>SAMPLE_BITS: 16 > > >>FRAME_BITS: 32 > > >>CHANNELS: 2 > > >>RATE: 44100 > > >>PERIOD_TIME: (125011 125012) > > >>PERIOD_SIZE: 5513 > > >>PERIOD_BYTES: 22052 > > >>PERIODS: 2 > > >>BUFFER_TIME: (250022 250023) > > >>BUFFER_SIZE: 11026 > > >>BUFFER_BYTES: 44104 > > >>TICK_TIME: 1000 > > >> > > >>Can you explain why this might be happening? > > > > > > > > > this is because the "Wave Surround Playback Volume" control is locked > > > by the first rear stream. > > > you can find it in /usr/share/alsa/cards/Audigy2.conf. > > > please try to remove the lock. > > > > > > > > > Takashi > > > > > Thanks that fixed the problem. > > Please see attached patch files, for the SB Live and Audigy2, both of > > which have been tested. > > Yes, but the question is, if we want this behaviour. We expect that the > rear channel will go only via rear speakers thus setting of Wave Surround > Volume is required.
but the signals from "rear" pcm stream should come in fact only from the rear channels, regardless of "Wave Surround Playback Volume", because it sets max send-volume to FX bus 2/3, and zero to others. setting "Wave Surround Playback" would allow other pcm streams to route the front signals to the surround, but it's a user's choice. i don't think this exclusive behavior is necessary. or am i missing something? Takashi ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
