Hi,
At the moment I'm debugging an alsa-oss emulation related bug. I'm using
alsa .9.8 on a i810 card. Using native alsa code I can query the capabilities
of the card. Alsa tells that only some 16bit formats are supported which is
is correct. When I'm in oss emulation mode, the driver also advertises
various 8bit formats which is wrong. Because of this problem the app I'm
debugging (Wine) is crashing as it tries to use 8bit while it isn't
supported.
After some digging in the alsa oss source I found this in
snd_pcm_oss_get_formats of pcm_oss.c:
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream))
< 0)
return err;
if (atomic_read(&substream->runtime->mmap_count)) {
direct = 1;
} else {
snd_pcm_oss_setup_t *setup = substream->oss.setup;
direct = (setup != NULL && setup->direct);
}
if (!direct)
return AFMT_MU_LAW | AFMT_U8 |
AFMT_S16_LE | AFMT_S16_BE |
AFMT_S8 | AFMT_U16_LE |
AFMT_U16_BE;
The supported formats alsa returns in my case is what you see behind the
if(!direct) line, so for some reason direct = 0. As I barely know anything
about alsa I hope you guys can help me out.
Thanks in advance,
Roderick Colenbrander
-------------------------------------------------------
This SF. Net email is sponsored by: GoToMyPC
GoToMyPC is the fast, easy and secure way to access your computer from
any Web browser or wireless device. Click here to Try it Free!
https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl
_______________________________________________
Alsa-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-devel
