On Mon, 2009-11-02 at 14:08 +0100, Takashi Iwai wrote:
> > * Remove erroneous snd_config_delete calls that cause later calls to
> > snd_pcm_open to fail.
>
> This is bad indeed. Could you make a small test case to reproduce the
> problem more easily?
Sure.
------
#include <stdio.h>
#include <alsa/asoundlib.h>
void try_open (const char * pcm)
{
snd_pcm_t * handle;
int error;
error = snd_pcm_open (& handle, pcm, SND_PCM_STREAM_PLAYBACK, 0);
if (error < 0)
printf ("Failed to open %s: %s.\n", pcm, snd_strerror (error));
else
{
printf ("Opened %s.\n", pcm);
snd_pcm_close (handle);
}
}
int main (void)
{
void * * hints;
try_open ("default");
try_open ("front");
try_open ("pulse");
try_open ("default");
try_open ("front");
try_open ("pulse");
printf ("Calling snd_device_name_hint().\n");
snd_device_name_hint (-1, "pcm", & hints);
snd_device_name_free_hint (hints);
try_open ("default");
try_open ("front");
try_open ("pulse");
try_open ("default");
try_open ("front");
try_open ("pulse");
return 0;
}
------
$ ./pcmtest
Opened default.
Opened front.
Opened pulse.
Opened default.
Opened front.
Opened pulse.
Calling snd_device_name_hint().
Opened default.
ALSA lib pcm.c:2211:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
Failed to open front: No such file or directory.
ALSA lib pcm.c:2211:(snd_pcm_open_noupdate) Unknown PCM pulse
Failed to open pulse: No such file or directory.
Opened default.
ALSA lib pcm.c:2211:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
Failed to open front: No such file or directory.
ALSA lib pcm.c:2211:(snd_pcm_open_noupdate) Unknown PCM pulse
Failed to open pulse: No such file or directory.
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