From 5cc9d970c83791f5b71b558c438587d5872449f0 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 23 Feb 2009 22:54:28 +0100
Subject: add new function pa_alsa_get_driver_name_by_pcm()

---
 src/modules/alsa/alsa-util.c | 15 +++++++++++++++
 src/modules/alsa/alsa-util.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index 016e52ab..274fef45 100644
--- a/src/modules/alsa/alsa-util.c
+++ b/src/modules/alsa/alsa-util.c
@@ -1637,3 +1637,18 @@ char *pa_alsa_get_driver_name(int card) {
 
     return n;
 }
+
+char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm) {
+    int card;
+
+    snd_pcm_info_t* info;
+    snd_pcm_info_alloca(&info);
+
+    if (snd_pcm_info(pcm, info) < 0)
+        return NULL;
+
+    if ((card = snd_pcm_info_get_card(info)) < 0)
+        return NULL;
+
+    return pa_alsa_get_driver_name(card);
+}
diff --git a/src/modules/alsa/alsa-util.h b/src/modules/alsa/alsa-util.h
index 2d0f407e..92f67977 100644
--- a/src/modules/alsa/alsa-util.h
+++ b/src/modules/alsa/alsa-util.h
@@ -133,4 +133,6 @@ int pa_alsa_safe_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas
 
 char *pa_alsa_get_driver_name(int card);
 
+char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm);
+
 #endif
-- 
cgit