Work-in-progress upload to add worker task queue to PC factory.

webrtc/media/engine/webrtcmediaengine.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 20 matching lines @@
     : public CompositeMediaEngine<WebRtcVoiceEngine, NullWebRtcVideoEngine> {
 #endif
  public:
   WebRtcMediaEngine2(webrtc::AudioDeviceModule* adm,
                      const rtc::scoped_refptr<webrtc::AudioEncoderFactory>&
                          audio_encoder_factory,
                      const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
                          audio_decoder_factory,
                      WebRtcVideoEncoderFactory* video_encoder_factory,
                      WebRtcVideoDecoderFactory* video_decoder_factory,
-                     rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer)
+                     rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer,
+                     rtc::TaskQueue* low_priority_worker_queue)
 #ifdef HAVE_WEBRTC_VIDEO
       : CompositeMediaEngine<WebRtcVoiceEngine, WebRtcVideoEngine2>(
             adm,
             audio_encoder_factory,
             audio_decoder_factory,
-            audio_mixer){
+            audio_mixer,
+            low_priority_worker_queue) {
 #else
       : CompositeMediaEngine<WebRtcVoiceEngine, NullWebRtcVideoEngine>(
             adm,
             audio_encoder_factory,
             audio_decoder_factory,
-            audio_mixer) {
+            audio_mixer,
+            low_priority_worker_queue) {
 #endif
             video_.SetExternalDecoderFactory(video_decoder_factory);
   video_.SetExternalEncoderFactory(video_encoder_factory);
   }
+
+ private:
+  std::unique_ptr<rtc::TaskQueue> low_priority_task_queue_;
 };
 
 }  // namespace cricket
 
 cricket::MediaEngineInterface* CreateWebRtcMediaEngine(
     webrtc::AudioDeviceModule* adm,
     const rtc::scoped_refptr<webrtc::AudioEncoderFactory>&
         audio_encoder_factory,
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     cricket::WebRtcVideoEncoderFactory* video_encoder_factory,
     cricket::WebRtcVideoDecoderFactory* video_decoder_factory,
-    rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer) {
+    rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer,
+    rtc::TaskQueue* low_priority_worker_queue) {
   return new cricket::WebRtcMediaEngine2(
       adm, audio_encoder_factory, audio_decoder_factory, video_encoder_factory,
-      video_decoder_factory, audio_mixer);
+      video_decoder_factory, audio_mixer, low_priority_worker_queue);
 }
 
 void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine) {
   delete media_engine;
 }
 
 namespace cricket {
 
 // TODO(ossu): Backwards-compatible interface. Will be deprecated once the
 // audio decoder factory is fully plumbed and used throughout WebRTC.
 // See: crbug.com/webrtc/6000
 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
     webrtc::AudioDeviceModule* adm,
     WebRtcVideoEncoderFactory* video_encoder_factory,
     WebRtcVideoDecoderFactory* video_decoder_factory) {
   return CreateWebRtcMediaEngine(
       adm, webrtc::CreateBuiltinAudioEncoderFactory(),
       webrtc::CreateBuiltinAudioDecoderFactory(), video_encoder_factory,
-      video_decoder_factory, nullptr);
+      video_decoder_factory, nullptr, nullptr);
 }
 
 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
     webrtc::AudioDeviceModule* adm,
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     WebRtcVideoEncoderFactory* video_encoder_factory,
     WebRtcVideoDecoderFactory* video_decoder_factory) {
   return CreateWebRtcMediaEngine(
       adm, webrtc::CreateBuiltinAudioEncoderFactory(), audio_decoder_factory,
-      video_encoder_factory, video_decoder_factory, nullptr);
+      video_encoder_factory, video_decoder_factory, nullptr, nullptr);
 }
 
 // Used by PeerConnectionFactory to create a media engine passed into
 // ChannelManager.
 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
     webrtc::AudioDeviceModule* adm,
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     WebRtcVideoEncoderFactory* video_encoder_factory,
     WebRtcVideoDecoderFactory* video_decoder_factory,
     rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer) {
   return CreateWebRtcMediaEngine(
       adm, webrtc::CreateBuiltinAudioEncoderFactory(), audio_decoder_factory,
-      video_encoder_factory, video_decoder_factory, audio_mixer);
+      video_encoder_factory, video_decoder_factory, audio_mixer, nullptr);
 }
 
 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
     webrtc::AudioDeviceModule* adm,
     const rtc::scoped_refptr<webrtc::AudioEncoderFactory>&
         audio_encoder_factory,
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     WebRtcVideoEncoderFactory* video_encoder_factory,
     WebRtcVideoDecoderFactory* video_decoder_factory) {
   return CreateWebRtcMediaEngine(adm, audio_encoder_factory,
                                  audio_decoder_factory, video_encoder_factory,
-                                 video_decoder_factory, nullptr);
+                                 video_decoder_factory, nullptr, nullptr);
 }
 
 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
     webrtc::AudioDeviceModule* adm,
     const rtc::scoped_refptr<webrtc::AudioEncoderFactory>&
         audio_encoder_factory,
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     WebRtcVideoEncoderFactory* video_encoder_factory,
     WebRtcVideoDecoderFactory* video_decoder_factory,
     rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer) {
   return CreateWebRtcMediaEngine(adm, audio_encoder_factory,
                                  audio_decoder_factory, video_encoder_factory,
-                                 video_decoder_factory, audio_mixer);
+                                 video_decoder_factory, audio_mixer, nullptr);
+}
+
+MediaEngineInterface* WebRtcMediaEngineFactory::Create(
+    webrtc::AudioDeviceModule* adm,
+    const rtc::scoped_refptr<webrtc::AudioEncoderFactory>&
+        audio_encoder_factory,
+    const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
+        audio_decoder_factory,
+    WebRtcVideoEncoderFactory* video_encoder_factory,
+    WebRtcVideoDecoderFactory* video_decoder_factory,
+    rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer,
+    rtc::TaskQueue* low_priority_worker_queue) {
+  return CreateWebRtcMediaEngine(
+      adm, audio_encoder_factory, audio_decoder_factory, video_encoder_factory,
+      video_decoder_factory, audio_mixer, low_priority_worker_queue);
 }
 
 namespace {
 // Remove mutually exclusive extensions with lower priority.
 void DiscardRedundantExtensions(
     std::vector<webrtc::RtpExtension>* extensions,
     rtc::ArrayView<const char*> extensions_decreasing_prio) {
   RTC_DCHECK(extensions);
   bool found = false;
   for (const char* uri : extensions_decreasing_prio) {
@@ skipping 89 matching lines @@
   }
   if (codec.GetParam(kCodecParamMaxBitrate, &bitrate_kbps) &&
       bitrate_kbps > 0) {
     config.max_bitrate_bps = bitrate_kbps * 1000;
   } else {
     config.max_bitrate_bps = -1;
   }
   return config;
 }
 }  // namespace cricket