From 4bd654542e43e61bd0422fd1191a6570e9875c4d Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 30 Jan 2009 02:24:40 +0100
Subject: add new function pa_alsa_get_driver_name()

---
 src/modules/alsa/alsa-util.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/modules/alsa/alsa-util.c')

diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index 7e5a3503..f23056a8 100644
--- a/src/modules/alsa/alsa-util.c
+++ b/src/modules/alsa/alsa-util.c
@@ -31,6 +31,7 @@
 #include <pulse/sample.h>
 #include <pulse/xmalloc.h>
 #include <pulse/timeval.h>
+#include <pulse/util.h>
 
 #include <pulsecore/log.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;
 }
+
+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;
+}
-- 
cgit