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add new function pa_alsa_get_driver_name()

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This commit is contained in:
Lennart Poettering 2009-01-30 02:24:40 +01:00
parent 1c94cfe29f
commit 4bd654542e
2 changed files with 21 additions and 0 deletions
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19
src/modules/alsa/alsa-util.c
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@ -31,6 +31,7 @@
#include <pulse/sample.h> #include <pulse/sample.h>
#include <pulse/xmalloc.h> #include <pulse/xmalloc.h>
#include <pulse/timeval.h> #include <pulse/timeval.h>
#include <pulse/util.h>
#include <pulsecore/log.h> #include <pulsecore/log.h>
#include <pulsecore/macro.h> #include <pulsecore/macro.h>
@ -1477,3 +1478,21 @@ int pa_alsa_safe_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas
return r; return r;
} }
char *pa_alsa_get_driver_name(int card) {
char *t, *m, *n;
pa_assert(card >= 0);
t = pa_sprintf_malloc("/sys/class/sound/card%i/device/driver/module", card);
m = pa_readlink(t);
pa_xfree(t);
if (!m)
return NULL;
n = pa_xstrdup(pa_path_get_filename(m));
pa_xfree(m);
return n;
}

2
src/modules/alsa/alsa-util.h
View file

@ -129,4 +129,6 @@ pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll);
snd_pcm_sframes_t pa_alsa_safe_avail_update(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss); snd_pcm_sframes_t pa_alsa_safe_avail_update(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss);
int pa_alsa_safe_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames, size_t hwbuf_size, const pa_sample_spec *ss); int pa_alsa_safe_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames, size_t hwbuf_size, const pa_sample_spec *ss);
char *pa_alsa_get_driver_name(int card);
#endif #endif