1 files changed, 10 insertions, 6 deletions
diff --git a/audio.c b/audio.c
index 5d470f6..f7c208a 100644
--- a/audio.c
+++ b/audio.c
@@ -290,9 +290,11 @@ static int AlsaAddToRingbuffer(const void *samples, int count)
 	// FIXME: should skip more, longer skip, but less often?
     }
     // Update audio clock
-    AudioPTS +=
-	((int64_t) count * 90000) / (AudioSampleRate * AudioChannels *
-	AudioBytesProSample);
+    if (AudioPTS != INT64_C(0x8000000000000000)) {
+	AudioPTS +=
+	    ((int64_t) count * 90000) / (AudioSampleRate * AudioChannels *
+	    AudioBytesProSample);
+    }
 
     if (!AudioRunning) {
 	if (AlsaStartThreshold < RingBufferUsedBytes(AlsaRingBuffer)) {
@@ -1275,9 +1277,11 @@ static int OssAddToRingbuffer(const void *samples, int count)
 	// FIXME: should skip more, longer skip, but less often?
     }
     // Update audio clock
-    AudioPTS +=
-	((int64_t) count * 90000) / (AudioSampleRate * AudioChannels *
-	AudioBytesProSample);
+    if (AudioPTS != INT64_C(0x8000000000000000)) {
+	AudioPTS +=
+	    ((int64_t) count * 90000) / (AudioSampleRate * AudioChannels *
+	    AudioBytesProSample);
+    }
 
     if (!AudioRunning) {
 	if (OssStartThreshold < RingBufferUsedBytes(OssRingBuffer)) {