From b2f6be639c064b74a60c5079c665e1d17177e474 Mon Sep 17 00:00:00 2001
From: aymeric <aymeric@3f6dc0c8-ddfe-455d-9043-3cd528dc4637>
Date: Thu, 6 Aug 2009 13:28:47 +0000
Subject: [PATCH] fix buggy driver

git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@563 3f6dc0c8-ddfe-455d-9043-3cd528dc4637
---
 linphone/mediastreamer2/src/alsa.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/linphone/mediastreamer2/src/alsa.c b/linphone/mediastreamer2/src/alsa.c
index b1a160459..65f0df720 100644
--- a/linphone/mediastreamer2/src/alsa.c
+++ b/linphone/mediastreamer2/src/alsa.c
@@ -287,6 +287,8 @@ static int alsa_can_read(snd_pcm_t *dev)
 	int err;
 
 	avail = snd_pcm_avail_update(dev);
+	/* A buggy driver does not return an error while being in Xrun */
+	if (avail >= 0 && snd_pcm_state(dev) == SND_PCM_STATE_XRUN) avail=-EPIPE;
 	if (avail < 0) {
 		ms_error("snd_pcm_avail_update: %s", snd_strerror(avail));	// most probably -EPIPE
 		/* overrun occured, snd_pcm_state() would return SND_PCM_STATE_XRUN