From 2cc8fbe2b413e6f3dbe0cd9d7231421b21f52ed4 Mon Sep 17 00:00:00 2001
From: Matthew Gregan <kinetik@flim.org>
Date: Wed, 3 Jun 2009 10:32:11 +1200
Subject: [PATCH] Bug 494116 - Use system audio timer for a/v sync on Windows. 
 r=chris.double, sr=roc

---
 content/media/video/src/nsAudioStream.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/content/media/video/src/nsAudioStream.cpp b/content/media/video/src/nsAudioStream.cpp
index c7a45d6710d..0d237c4c0e4 100644
--- a/content/media/video/src/nsAudioStream.cpp
+++ b/content/media/video/src/nsAudioStream.cpp
@@ -242,10 +242,13 @@ float nsAudioStream::GetPosition()
   if (!mAudioHandle)
     return -1.0;
 
+  sa_position_t positionType = SA_POSITION_WRITE_SOFTWARE;
+#if defined(XP_WIN)
+  positionType = SA_POSITION_WRITE_HARDWARE;
+#endif
   PRInt64 position = 0;
   if (sa_stream_get_position(static_cast<sa_stream_t*>(mAudioHandle),
-                             SA_POSITION_WRITE_SOFTWARE,
-                             &position) == SA_SUCCESS) {
+                             positionType, &position) == SA_SUCCESS) {
     return (position / float(mRate) / mChannels / sizeof(short));
   }