Add content type information to encoded images and corresponding rtp extension header

webrtc/sdk/objc/Framework/Classes/h264_video_toolbox_encoder.h

 /*
  *  Copyright (c) 2015 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 67 matching lines @@
   void SetEncoderBitrateBps(uint32_t bitrate_bps);
 
   EncodedImageCallback* callback_;
   VTCompressionSessionRef compression_session_;
   BitrateAdjuster bitrate_adjuster_;
   H264PacketizationMode packetization_mode_;
   uint32_t target_bitrate_bps_;
   uint32_t encoder_bitrate_bps_;
   int32_t width_;
   int32_t height_;
+  VideoCodecMode mode_;

[nisse-webrtc, 2017/04/03 12:07:18]

What's VideoCodecMode?

[ilnik, 2017/04/03 14:03:43]

Currently it's screenshare or realtime. Set in encoder config. That's the thing
we want to communicate to the receiver. It's easily available in webrtc
encoders, but ignored in the SDK.

   const CFStringRef profile_;
 
   H264BitstreamParser h264_bitstream_parser_;
   std::vector<uint8_t> nv12_scale_buffer_;
 };  // H264VideoToolboxEncoder
 
 }  // namespace webrtc
 
 #endif // WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_ENCODER_H_