On Fri, 5 Feb 2010, Raymond Yau wrote: > 2010/2/5 Guennadi Liakhovetski <g.liakhovetski@xxxxxx> > > > On Thu, 4 Feb 2010, Raymond Yau wrote: > > > > I would see your reply sooner, if you used reply-to-all. > > > > > if LIBASOUND_DEBUG = 1 cannot tell you which parameter fail in > > hw_params() , > > > you will need to define RULES_DEBUG in alsa-kernel/core/pcm_native.c and > > > compile driver with debug=verbose > > > > > > -#undef RULES_DEBUG > > > +#define RULES DEBUG 1 > > > > That's already on too. Not sure what you mean by "compile driver with > > debug=verbose," supposedly, some kernel ALSA debug parameter. Since this > > is my driver, I can certainly add any debugging there, but it seems > > obvious to me, that the kernel is still getting a mono configuration, > > which shouldn't be the cae. > > > > > you can find out how ALSA refine the hw parameters by examing the system > > log > > > > If you mean "dmesg" output, then, as I said, there isn't much to look for > > there - the kernel is configured for mono... > > > > Thanks > > Guennadi > > > > > your output is quite different from mine > > arecord -v -f cd -c 1 -d 30 -r 8000 -Dplughw:1,0 any.wav > Recording WAVE 'any.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono > Plug PCM: Route conversion PCM (sformat=S16_LE) > Transformation table: > 0 <- 0*0.5 + 1*0.5 > Its setup is: > stream : CAPTURE > access : RW_INTERLEAVED > format : S16_LE > subformat : STD > channels : 1 > rate : 8000 > exact rate : 8000 (8000/1) > msbits : 16 > buffer_size : 3968 > period_size : 992 > period_time : 124000 > tstamp_mode : NONE > period_step : 1 > avail_min : 992 > period_event : 0 > start_threshold : 1 > stop_threshold : 3968 > silence_threshold: 0 > silence_size : 0 > boundary : 2080374784 > Slave: Hardware PCM card 1 'HDA Intel' device 0 subdevice 0 > Its setup is: > stream : CAPTURE > access : MMAP_INTERLEAVED > format : S16_LE > subformat : STD > channels : 2 Of course, in my case set_params() in aplay.c exit earlier as snd_pcm_hw_params() returns an error - see Unable to install hw params: message in my log. Maybe you could try current alsa-lib and alsa-util versions? Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
