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add utility functions to dump alsa PCM state

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2219 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-04-07 16:46:13 +00:00
parent b9c10f2c56
commit 98b0152d7c
2 changed files with 46 additions and 0 deletions
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43
src/modules/alsa-util.c
View file

@ -894,3 +894,46 @@ void pa_alsa_0dB_capture(snd_mixer_elem_t *elem) {
snd_mixer_selem_set_capture_volume_all(elem, v); snd_mixer_selem_set_capture_volume_all(elem, v);
} }
void pa_alsa_dump(snd_pcm_t *pcm) {
int err;
snd_output_t *out;
pa_assert(pcm);
pa_assert_se(snd_output_buffer_open(&out) == 0);
if ((err = snd_pcm_dump(pcm, out)) < 0)
pa_log_debug("snd_pcm_dump(): %s", snd_strerror(err));
else {
char *s = NULL;
snd_output_buffer_string(out, &s);
pa_log_debug("snd_pcm_dump():\n%s", pa_strnull(s));
}
pa_assert_se(snd_output_close(out) == 0);
}
void pa_alsa_dump_status(snd_pcm_t *pcm) {
int err;
snd_output_t *out;
snd_pcm_status_t *status;
pa_assert(pcm);
snd_pcm_status_alloca(&status);
pa_assert_se(snd_output_buffer_open(&out) == 0);
pa_assert_se(snd_pcm_status(pcm, status) == 0);
if ((err = snd_pcm_status_dump(status, out)) < 0)
pa_log_debug("snd_pcm_dump(): %s", snd_strerror(err));
else {
char *s = NULL;
snd_output_buffer_string(out, &s);
pa_log_debug("snd_pcm_dump():\n%s", pa_strnull(s));
}
pa_assert_se(snd_output_close(out) == 0);
}

3
src/modules/alsa-util.h
View file

@ -82,4 +82,7 @@ int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel
void pa_alsa_0dB_playback(snd_mixer_elem_t *elem); void pa_alsa_0dB_playback(snd_mixer_elem_t *elem);
void pa_alsa_0dB_capture(snd_mixer_elem_t *elem); void pa_alsa_0dB_capture(snd_mixer_elem_t *elem);
void pa_alsa_dump(snd_pcm_t *pcm);
void pa_alsa_dump_status(snd_pcm_t *pcm);
#endif #endif