From dca28d002b1f155ad33fda6894a65c9c181cd237 Mon Sep 17 00:00:00 2001
From: Ehsan Akhgari <ehsan@mozilla.com>
Date: Sun, 10 Mar 2013 13:59:41 -0400
Subject: [PATCH] Bug 849713 - Part 2: Accept the loop parameters on
 AudioBufferSourceNodeEngine; r=roc

---
 .../media/webaudio/AudioBufferSourceNode.cpp  | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/content/media/webaudio/AudioBufferSourceNode.cpp b/content/media/webaudio/AudioBufferSourceNode.cpp
index 838b3f5b4e9..338cfac7ef4 100644
--- a/content/media/webaudio/AudioBufferSourceNode.cpp
+++ b/content/media/webaudio/AudioBufferSourceNode.cpp
@@ -25,7 +25,16 @@ class AudioBufferSourceNodeEngine : public AudioNodeEngine
 {
 public:
   AudioBufferSourceNodeEngine() :
-    mStart(0), mStop(TRACK_TICKS_MAX), mOffset(0), mDuration(0) {}
+    mStart(0), mStop(TRACK_TICKS_MAX),
+    mOffset(0), mDuration(0),
+    mLoop(NotLooping), mLoopStart(0), mLoopEnd(0)
+  {}
+
+  enum LoopState {
+    NotLooping, // Will never loop
+    WillLoop,   // In loop mode, but has not started to loop yet
+    IsLooping   // Is looping
+  };
 
   // START, OFFSET and DURATION are always set by start() (along with setting
   // mBuffer to something non-null).
@@ -34,7 +43,10 @@ public:
     START,
     STOP,
     OFFSET,
-    DURATION
+    DURATION,
+    LOOP,
+    LOOPSTART,
+    LOOPEND
   };
   virtual void SetStreamTimeParameter(uint32_t aIndex, TrackTicks aParam)
   {
@@ -50,6 +62,9 @@ public:
     switch (aIndex) {
     case OFFSET: mOffset = aParam; break;
     case DURATION: mDuration = aParam; break;
+    case LOOP: mLoop = aParam ? WillLoop: NotLooping; break;
+    case LOOPSTART: mLoopStart = aParam; break;
+    case LOOPEND: mLoopEnd = aParam; break;
     default:
       NS_ERROR("Bad AudioBufferSourceNodeEngine Int32Parameter");
     }
@@ -123,6 +138,9 @@ public:
   nsRefPtr<ThreadSharedFloatArrayBufferList> mBuffer;
   int32_t mOffset;
   int32_t mDuration;
+  LoopState mLoop;
+  int32_t mLoopStart;
+  int32_t mLoopEnd;
 };
 
 AudioBufferSourceNode::AudioBufferSourceNode(AudioContext* aContext)