From c0286b3ab4a0982000756fd32d607f50889ffe02 Mon Sep 17 00:00:00 2001
From: Johns <johns98@gmx.net>
Date: Mon, 15 Apr 2013 16:55:15 +0200
Subject: [PATCH] Fix "broken driver" message if empty ring buffer.

---
 ChangeLog |  1 +
 audio.c   | 13 ++++++++-----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d57bd67..ddf7170 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 User johns
 Date:
 
+    Fix "broken driver" message if empty ring buffer.
     Enable seamless audio track change.
     Fix bug #1302: Unsupported pixel format crash.
     Fix the fix, when sillpicture is called in suspend mode.
diff --git a/audio.c b/audio.c
index fa518d5..a38377d 100644
--- a/audio.c
+++ b/audio.c
@@ -2033,10 +2033,10 @@ static void *AudioPlayHandlerThread(void *dummy)
 	pthread_mutex_unlock(&AudioMutex);
 
 	Debug(3, "audio: ----> %dms start\n", (AudioUsedBytes() * 1000)
-	    / (!AudioRing[AudioRingRead].HwSampleRate +
-		!AudioRing[AudioRingRead].HwChannels +
-		AudioRing[AudioRingRead].HwSampleRate *
-		AudioRing[AudioRingRead].HwChannels * AudioBytesProSample));
+	    / (!AudioRing[AudioRingWrite].HwSampleRate +
+		!AudioRing[AudioRingWrite].HwChannels +
+		AudioRing[AudioRingWrite].HwSampleRate *
+		AudioRing[AudioRingWrite].HwChannels * AudioBytesProSample));
 
 	do {
 	    int filled;
@@ -2069,7 +2069,10 @@ static void *AudioPlayHandlerThread(void *dummy)
 		Debug(3, "audio: continue after flush\n");
 	    }
 	    // try to play some samples
-	    err = AudioUsedModule->Thread();
+	    err = 0;
+	    if (RingBufferUsedBytes(AudioRing[AudioRingRead].RingBuffer)) {
+		err = AudioUsedModule->Thread();
+	    }
 	    // underrun, check if new ring buffer is available
 	    if (!err) {
 		int passthrough;