Re: usb-audio

[Takashi Iwai <tiwai@suse.de>]

At Tue, 28 Oct 2003 12:48:17 +0100,
Niklas Werner wrote:
> 
> Am Dienstag, 28. Oktober 2003 12:10 schrieb Takashi Iwai:
> > 
> > > No, I don't think it is.
> > > I get similar problems with my emi 2|6 and alsaplayer, mplayer, xmms,
> > > ...
> >
> > did you use plughw instead of hw in all cases?
> > otherwise they won't work always.
> plughw doesn't work at all!

for xmms, too?

> > mplayer has an option to specify the device name.
> > it'd be better to define a new pcm in ~/.asoundrc such as
> >
> > 	pcm.emi26 {
> > 		type plug
> > 		slave.pcm "hw:0"
> > 	}
> >
> > (where "hw:0" should be changed to the corresponding one)
> >
> > and run like
> >
> > 	% mplayer -ao alsa9:emi26 ...
> >
> gives:
> Checking audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/16bit...
> AF_pre: af format: 2 bps, 2 ch, 44100 hz, big endian signed int 
> AF_pre: 44100Hz 2ch Signed 16-bit (Big-Endian)
> alsa-init: requested format: 44100 Hz, 2 channels, Signed 16-bit 
> (Big-Endian)
> alsa-init: soundcard set to emi26
> alsa9: 44100 Hz/2 channels/2 bpf/32768 bytes buffer/Signed 16 bit Big 
> Endian
> AO: [alsa9] 44100Hz 2ch Signed 16-bit (Big-Endian) (2 bps)
> Building audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/16bit...
> Video: no video
> Starting playback...
> 
> 
> MPlayer interrupted by signal 11 in module: play_audio

it's segfault.  likely a bug in the mplayer's alsa9 output routine.

to be sure, try to start mplayer on gdb and check what is broken.
tracing via strace woule help, too.


Takashi


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