You might try signed instead of unsigned. _J
In the new year, Samuel S Chessman wrote: > I have been trying to get S16_LE format sound out of my ice1712 with > poor success, and noted the example in > http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html > for setting up slaves. I added a format line to ~/.asoundrc thus: > > pcm.rate44100Hz { > type plug > slave { > pcm "hw:0,0" > rate 44100 > format "Unsigned 16 bit Little Endian" > } > } > > and received a failure; > ALSA lib pcm.c:5504:(snd_pcm_slave_conf) unknown format > snd_pcm_open: Invalid argument (rate44100Hz) > > Investigating the code led me to conclude that the snd_pcm_format_value() > function should be looking up strings in snd_pcm_format_descriptions[] > where they are defined instead of snd_pcm_format_names[] where they are not. > It would also be helpful to print out the unknown format with the error. > > Perhaps I misunderstand but there is little documentation on format. > > Now I get the following error: > ALSA lib pcm_params.c:2020:(snd_pcm_hw_refine_slave) Slave PCM not useable > > Any ideas? > > The following patch is against yesterdays cvs. > --- /u01/alsa/alsa-cvs/alsa-lib/src/pcm/pcm.c Fri Feb 22 21:03:18 2002 > +++ src/pcm/pcm.c Sun Mar 3 00:07:26 2002 > @@ -1299,8 +1299,8 @@ > { > snd_pcm_format_t format; > for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) { > - if (snd_pcm_format_names[format] && > - strcasecmp(name, snd_pcm_format_names[format]) == 0) { > + if (snd_pcm_format_descriptions[format] && > + strcasecmp(name, snd_pcm_format_descriptions[format]) == 0) { > return format; > } > } > @@ -5501,7 +5501,7 @@ > } > f = snd_pcm_format_value(str); > if (f == SND_PCM_FORMAT_UNKNOWN) { > - SNDERR("unknown format"); > + SNDERR("unknown format %s",str); > err = -EINVAL; > goto _err; > } > > > -- > Sam Chessman [EMAIL PROTECTED] > First do what's necessary, then what's possible, finally the impossible. > > > _______________________________________________ > Alsa-devel mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
