From 4ef30b5b0399e16366bdb76aa1921cbfb5c0d520 Mon Sep 17 00:00:00 2001
From: Matthew Gregan <kinetik@flim.org>
Date: Mon, 11 Aug 2014 13:21:17 +1200
Subject: [PATCH] Bug 1049317 - SBR::ReadFromCache forgot to reset offset. 
 r=cajbir

---
 content/media/mediasource/SourceBufferResource.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/content/media/mediasource/SourceBufferResource.cpp b/content/media/mediasource/SourceBufferResource.cpp
index d54cc7d5b72e..315982602c39 100644
--- a/content/media/mediasource/SourceBufferResource.cpp
+++ b/content/media/mediasource/SourceBufferResource.cpp
@@ -133,7 +133,10 @@ SourceBufferResource::ReadFromCache(char* aBuffer, int64_t aOffset, uint32_t aCo
 {
   SBR_DEBUG("SourceBufferResource(%p)::ReadFromCache(aBuffer=%p, aOffset=%lld, aCount=%u)",
             this, aBuffer, aOffset, aCount);
-  return ReadAt(aOffset, aBuffer, aCount, nullptr);
+  int64_t oldOffset = mOffset;
+  nsresult rv = ReadAt(aOffset, aBuffer, aCount, nullptr);
+  mOffset = oldOffset;
+  return rv;
 }
 
 bool