Bitrate controller for VideoToolbox encoder.

talk/media/webrtc/webrtcvideoengine2.cc

 /*
  * libjingle
  * Copyright 2014 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 1513 matching lines @@
     webrtc::VideoCodecType type,
     bool external)
     : encoder(encoder),
       external_encoder(nullptr),
       type(type),
       external(external) {
   if (external) {
     external_encoder = encoder;
     this->encoder =
         new webrtc::VideoEncoderSoftwareFallbackWrapper(type, encoder);
+  } else if (encoder && encoder->IsHardwareEncoder()) {
+    this->encoder = new webrtc::HardwareVideoEncoderWrapper(encoder);
   }
 }
 
 WebRtcVideoChannel2::WebRtcVideoSendStream::WebRtcVideoSendStream(
     webrtc::Call* call,
     const StreamParams& sp,
     const webrtc::VideoSendStream::Config& config,
     WebRtcVideoEncoderFactory* external_encoder_factory,
     const VideoOptions& options,
     int max_bitrate_bps,
@@ skipping 1008 matching lines @@
       video_codecs[i].rtx_payload_type = rtx_mapping[video_codecs[i].codec.id];
     }
   }
 
   return video_codecs;
 }
 
 }  // namespace cricket
 
 #endif  // HAVE_WEBRTC_VIDEO