import changes from `dev' branch of rmottola/Arctic-Fox:

- bug 1179662 rename AudioNode::Stream() to GetStream() as it may return null r=padenot (d2d7e5f90)
-  bug 1197043 remove unnecessary aSampleRate parameter for AudioNodeStream creation r=padenot (3733ceb56)
- bug 1197043 rename Add/RemoveStream to Add/RemoveStreamGraphThread r=padenot (f648b8251)
- bug 1197043 introduce MediaStreamGraph::AddStream() r=padenot (ac021d4b2)
- bug 1197043 move AudioNodeStream creation to stream class r=padenot (a90a05910)
- bug 1197043 use flags to distinguish between external streams and events r=padenot (024dd96f1)
- Bug 1176300 - Move libsoundtouch to lgpllibs; r=glandium (99a546adf)
- Bug 1176300 - Add lgpllibs library to build system; r=glandium (bb4d07670)
- Bug 1176300 - Update libsoundtouch to patched r222; r=padenot (hg rev 8c32c900cb48)
- Bug 1176300 - Add soundtouch factory functions for DLL memory handling on windows; r=padenot (hg rev 84a1ffbc2db8)
- Bug 901633 - Part 1 - Implement a generic audio packetizer. r=jesup (a38c2d70b)
- Bug 901633 - Part 2 - Make AudioChannelFormat and AudioSegment more generic. r=roc (556b7349f)
- Bug 901633 - Part 3 - Fix TrackEncoder to use the new AudioChunk methods. r=jesup (56e018f83)
- Bug 901633 - Part 4 - Update AudioNodeStream to use new chunk methods. r=roc (9df19b894)
- Bug 901633 - Part 6 - Update DelayBuffer to use the new AudioChunk methods. r=karlt (6d5684334)
- Bug 901633 - Part 7 - Update AudioNodeExternalInputStream to use the new AudioChunk methods. r=karlt (caa3afa01)
- Bug 1155089: Fix hazard analysis bustage on a CLOSED TREE. r=bustage (8d23ccf39)
- Bug 1166183 - Back out the direct listener removal landed by mistake in bug 1141781. r=jesup (745d683d4)
- Bug 1166183 - Reset PipelineListener's flag after ReplaceTrack(). r=bwc (2fb38ca01)
- Bug 1170059 - Fix -Wunreachable-code clang warnings in webrtc/signaling. r=jesup (0d99b30ca)
- Bug 1139144 - Remove unused empty() definition from databuffer.h. r=mt (2fef64e3c)
- Bug 822129: don't alloc/free on every packet send in MediaPipeline r=bwc (ddfdc9455)
- Bug 1172397 - Check for Conduit/Type mismatch on every frame. r=jesup, r=bwc (a399a3336)
- Bug 1137169 - Uninitialised value uses related to mozilla::dom::WebAdioUtils::SpeexResamplerProcess. r=rjesup. (ce14ac278)
- Bug 901633 - Part 5 - Make MediaPipeline downmix and properly convert audio for webrtc.org code. r=jesup (89138b5d5)
- Bug 901633 - Part 8 - Use our new generic packetizer in the MediaPipeline so that we can packetize stereo easily. r=jesup (fb5d075b6)
- Bug 901633 - Part 9 - Make the necessary changes to VoEExternalMediaImpl::ExternalRecordingInsertData so that it the number of channels is forwarded down the webrtc.org code. r=jesup (d5d7dd4ca)
- Bug 901633 - Part 10 - Change the receiving side of the MediaPipeline so that it can detect and handle stereo. r=jesup (a73c1520f)
- Bug 901633 - Part 11 - Add an API in webrtc.org's output mixer to get the output channel count. r=jesup (4b396b85e)
- Bug 901633 - Part 12 - Add a function to deinterleave and convert an audio buffer. r=jesup (47ce3c7a5)
- Bug 901633 - Part 13 - Teach the resampler at the input of the MSG to dynamically change its channel count if needed. r=jesup (120c8d037)
- Bug 901633 - Part 14 - Add testing for our audio processing functions. r=jesup (5aa95b82e)
- Bug 901633 - Part 15 - Remove an allocation on the sending side, out of the packetizer. r=jesup (df8aed252)
- Bug 901633 - Part 16 - Remove another allocation in the sending side r=jesup (1e2fc8bca)
- Bug 1196408 - Make sure we only report a corrupt/slow video frame once. r=cpearce (5bae2f17a)
- bug 1162364 report telemetry on WMFMediaDataDecoder errors r=cpearce,f=vladan,bsmedberg (e217618ef)
- Bug 1193864 - Fixed dom/media/platforms/wmf/ compilation on mingw. r=cpearce (4e8c0ecd7)
- Bug 1141139: Enable low latency decoding on Windows. r=cpearce (9e0a36e27)
- Bug 1193547 - Fallback to software decoding explicitly if the GPU doesn't support decoding the current resolution in hardware. r=cpearce,jya (7fbab8784)
- Bug 1196417 - Make video software fallback only affect the current video instead of the entire browser. r=cpearce (3e83f0677)

dom/media/platforms/wmf/WMFDecoderModule.cpp

@@ -42,13 +42,6 @@ WMFDecoderModule::~WMFDecoderModule()
   }
 }
 
-void
-WMFDecoderModule::DisableHardwareAcceleration()
-{
-  sDXVAEnabled = false;
-  sIsIntelDecoderEnabled = false;
-}
-
 static void
 SetNumOfDecoderThreads()
 {
@@ -99,11 +92,11 @@ WMFDecoderModule::CreateVideoDecoder(const VideoInfo& aConfig,
                                      FlushableTaskQueue* aVideoTaskQueue,
                                      MediaDataDecoderCallback* aCallback)
 {
-  nsAutoPtr<WMFVideoMFTManager> manager =
+  nsAutoPtr<WMFVideoMFTManager> manager(
     new WMFVideoMFTManager(aConfig,
                            aLayersBackend,
                            aImageContainer,
-                           sDXVAEnabled && ShouldUseDXVA(aConfig));
+                           sDXVAEnabled));
 
   nsRefPtr<MFTDecoder> mft = manager->Init();
 
@@ -122,7 +115,7 @@ WMFDecoderModule::CreateAudioDecoder(const AudioInfo& aConfig,
                                      FlushableTaskQueue* aAudioTaskQueue,
                                      MediaDataDecoderCallback* aCallback)
 {
-  nsAutoPtr<WMFAudioMFTManager> manager = new WMFAudioMFTManager(aConfig);
+  nsAutoPtr<WMFAudioMFTManager> manager(new WMFAudioMFTManager(aConfig));
   nsRefPtr<MFTDecoder> mft = manager->Init();
 
   if (!mft) {
@@ -134,35 +127,6 @@ WMFDecoderModule::CreateAudioDecoder(const AudioInfo& aConfig,
   return decoder.forget();
 }
 
-bool
-WMFDecoderModule::ShouldUseDXVA(const VideoInfo& aConfig) const
-{
-  static bool isAMD = false;
-  static bool initialized = false;
-  if (!initialized) {
-    nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
-    nsAutoString vendor;
-    gfxInfo->GetAdapterVendorID(vendor);
-    isAMD = vendor.Equals(widget::GfxDriverInfo::GetDeviceVendor(widget::VendorAMD), nsCaseInsensitiveStringComparator()) ||
-            vendor.Equals(widget::GfxDriverInfo::GetDeviceVendor(widget::VendorATI), nsCaseInsensitiveStringComparator());
-    initialized = true;
-  }
-  if (!isAMD) {
-    return true;
-  }
-  // Don't use DXVA for 4k videos or above, since it seems to perform poorly.
-  return aConfig.mDisplay.width <= 1920 && aConfig.mDisplay.height <= 1200;
-}
-
-bool
-WMFDecoderModule::SupportsSharedDecoders(const VideoInfo& aConfig) const
-{
-  // If DXVA is enabled, but we're not going to use it for this specific config, then
-  // we can't use the shared decoder.
-  return !AgnosticMimeType(aConfig.mMimeType) &&
-    (!sDXVAEnabled || ShouldUseDXVA(aConfig));
-}
-
 bool
 WMFDecoderModule::SupportsMimeType(const nsACString& aMimeType)
 {