Philipp Vollmer wrote:
>> it seems params == 0 when you're calling snd_pcm_hw_refine.
>Hello,
>
>Sorry but there is no codeline like snd_pcm_hw_refine in the example.
>I will send you the file as an attachment.
in your file:
if ((playback_handle = snd_pcm_open (&playback_handle, "default",
SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
snd_pcm_open returns 0 on success, *not* the pcm handle. have you
tried reading the docs yet ;) and haven't you wondered why you pass
the address of 'playback_handle' to snd_pcm_open()?
gcc warns you about this:
$ gcc -c how1.c
how1.c: In function `main':
how1.c:11: warning: assignment makes pointer from integer without a
cast
and if you had endeavoured to read the sources of alsa-lib, you'd
have discovered that (alsa-lib/src/pcm/pcm.c):
int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
_snd_pcm_hw_params_any(params);
return snd_pcm_hw_refine(pcm, params);
}
with all respect, i think you could have tried a little harder to find
the error.
tim
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