From 6ccd999a89ac91f1567dbd69d0ffd9c1ede7d121 Mon Sep 17 00:00:00 2001
From: cladisch <cladisch@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Mon, 27 Feb 2006 10:09:05 +0000
Subject: [PATCH] Output error messages from the ALSA library through mp_msg()
 instead of the default stderr.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17692 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libao2/ao_alsa.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/libao2/ao_alsa.c b/libao2/ao_alsa.c
index 7a7a65e7d3..4ed5779d65 100644
--- a/libao2/ao_alsa.c
+++ b/libao2/ao_alsa.c
@@ -15,6 +15,7 @@
 #include <errno.h>
 #include <sys/time.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include <math.h>
 #include <string.h>
 
@@ -72,6 +73,25 @@ static int alsa_can_pause = 0;
 #undef BUFFERTIME
 #define SET_CHUNKSIZE
 
+static void alsa_error_handler(const char *file, int line, const char *function,
+			       int err, const char *format, ...)
+{
+  char tmp[0xc00];
+  va_list va;
+
+  va_start(va, format);
+  vsnprintf(tmp, sizeof tmp, format, va);
+  va_end(va);
+  tmp[sizeof tmp - 1] = '\0';
+
+  if (err)
+    mp_msg(MSGT_AO, MSGL_ERR, "alsa-lib: %s:%i:(%s) %s: %s\n",
+	   file, line, function, tmp, snd_strerror(err));
+  else
+    mp_msg(MSGT_AO, MSGL_ERR, "alsa-lib: %s:%i:(%s) %s\n",
+	   file, line, function, tmp);
+}
+
 /* to set/get/query special features/parameters */
 static int control(int cmd, void *arg)
 {
@@ -275,6 +295,8 @@ static int init(int rate_hz, int channels, int format, int flags)
 #else
     mp_msg(MSGT_AO,MSGL_V,"alsa-init: compiled for ALSA-%s\n", SND_LIB_VERSION_STR);
 #endif
+
+    snd_lib_error_set_handler(alsa_error_handler);
     
     if ((err = snd_card_next(&cards)) < 0 || cards < 0)
     {