1 files changed, 14 insertions, 1 deletions
diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index 3f26aebe..2d0ca107 100644
--- a/src/modules/alsa/alsa-util.c
+++ b/src/modules/alsa/alsa-util.c
@@ -1716,10 +1716,11 @@ char *pa_alsa_get_driver_name(int card) {
 
 char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm) {
     int card;
-
     snd_pcm_info_t* info;
     snd_pcm_info_alloca(&info);
 
+    pa_assert(pcm);
+
     if (snd_pcm_info(pcm, info) < 0)
         return NULL;
 
@@ -1749,3 +1750,15 @@ char *pa_alsa_get_reserve_name(const char *device) {
 
     return pa_sprintf_malloc("Audio%i", i);
 }
+
+pa_bool_t pa_alsa_pcm_is_hw(snd_pcm_t *pcm) {
+    snd_pcm_info_t* info;
+    snd_pcm_info_alloca(&info);
+
+    pa_assert(pcm);
+
+    if (snd_pcm_info(pcm, info) < 0)
+        return FALSE;
+
+    return snd_pcm_info_get_card(info) >= 0;
+}