Enable passing receive stream ID to the decoder factory.

webrtc/media/engine/webrtcvideoengine2.h

 /*
  *  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 407 matching lines @@
         webrtc::Call* call,
         const StreamParams& sp,
         webrtc::VideoReceiveStream::Config config,
         WebRtcVideoDecoderFactory* external_decoder_factory,
         bool default_stream,
         const std::vector<VideoCodecSettings>& recv_codecs,
         bool red_disabled_by_remote_side);
     ~WebRtcVideoReceiveStream();
 
     const std::vector<uint32_t>& GetSsrcs() const;
+    rtc::Optional<uint32_t> GetFirstPrimarySsrc() const;
 
     void SetLocalSsrc(uint32_t local_ssrc);
     // TODO(deadbeef): Move these feedback parameters into the recv parameters.
     void SetFeedbackParameters(bool nack_enabled,
                                bool remb_enabled,
                                bool transport_cc_enabled,
                                webrtc::RtcpMode rtcp_mode);
     void SetRecvParameters(const ChangedRecvParameters& recv_params);
 
     void OnFrame(const webrtc::VideoFrame& frame) override;
@@ skipping 28 matching lines @@
     void ConfigureCodecs(const std::vector<VideoCodecSettings>& recv_codecs,
                          std::vector<AllocatedDecoder>* old_codecs);
     AllocatedDecoder CreateOrReuseVideoDecoder(
         std::vector<AllocatedDecoder>* old_decoder,
         const VideoCodec& codec);
     void ClearDecoders(std::vector<AllocatedDecoder>* allocated_decoders);
 
     std::string GetCodecNameFromPayloadType(int payload_type);
 
     webrtc::Call* const call_;
-    const std::vector<uint32_t> ssrcs_;
-    const std::vector<SsrcGroup> ssrc_groups_;
+    StreamParams stream_params_;
 
     webrtc::VideoReceiveStream* stream_;
     const bool default_stream_;
     webrtc::VideoReceiveStream::Config config_;
     bool red_disabled_by_remote_side_;
 
     WebRtcVideoDecoderFactory* const external_decoder_factory_;
     std::vector<AllocatedDecoder> allocated_decoders_;
 
     rtc::CriticalSection sink_lock_;
@@ skipping 61 matching lines @@
   // send_params/recv_params, rtp_extensions, options, etc.
   VideoSendParameters send_params_;
   VideoOptions default_send_options_;
   VideoRecvParameters recv_params_;
   bool red_disabled_by_remote_side_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_ENGINE_WEBRTCVIDEOENGINE2_H_