Generalize FlexfecReceiveStream::Config. (CL1)

webrtc/api/call/flexfec_receive_stream.h

 /*
  *  Copyright (c) 2016 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.
  */
 
 #ifndef WEBRTC_API_CALL_FLEXFEC_RECEIVE_STREAM_H_
 #define WEBRTC_API_CALL_FLEXFEC_RECEIVE_STREAM_H_
 
 #include <string>
+#include <vector>
 
+#include "webrtc/api/call/transport.h"
 #include "webrtc/config.h"
 
 namespace webrtc {
 
 // WORK IN PROGRESS!
 // This class is under development and it is not yet intended for use outside
 // of WebRTC.
 //
 // TODO(brandtr): Remove this comment when FlexFEC is ready for public use.
 
 class FlexfecReceiveStream {
  public:
   struct Stats {
     std::string ToString(int64_t time_ms) const;
 
     // TODO(brandtr): Add appropriate stats here.
     int flexfec_bitrate_bps;
   };
 
-  // TODO(brandtr): When we add multistream protection, and thus add a
-  // FlexfecSendStream class, remove FlexfecConfig from config.h and add
-  // the appropriate configs here and in FlexfecSendStream.
-  using Config = FlexfecConfig;
+  struct Config {
+    std::string ToString() const;
+
+    // Payload type for FlexFEC.
+    int payload_type = -1;
+
+    // SSRC for FlexFEC stream to be received.
+    uint32_t remote_ssrc = 0;
+
+    // Vector containing a single element, corresponding to the SSRC of the
+    // media stream being protected by this FlexFEC stream. The vector MUST have
+    // size 1.
+    //
+    // TODO(brandtr): Update comment above when we support multistream
+    // protection.
+    std::vector<uint32_t> protected_media_ssrcs;
+
+    // SSRC for RTCP reports to be sent.
+    uint32_t local_ssrc = 0;
+
+    // What RTCP mode to use in the reports.
+    RtcpMode rtcp_mode = RtcpMode::kCompound;
+
+    // Transport for outgoing RTCP packets.
+    Transport* rtcp_send_transport = nullptr;
+
+    // |transport_cc| is true whenever the send-side BWE RTCP feedback message
+    // has been negotiated. This is a prerequisite for enabling send-side BWE.
+    bool transport_cc = false;
+
+    // RTP header extensions that have been negotiated for this track.
+    std::vector<RtpExtension> extensions;
+  };
 
   // Starts stream activity.
   // When a stream is active, it can receive and process packets.
   virtual void Start() = 0;
   // Stops stream activity.
   // When a stream is stopped, it can't receive nor process packets.
   virtual void Stop() = 0;
 
   virtual Stats GetStats() const = 0;
 
  protected:
   virtual ~FlexfecReceiveStream() = default;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_CALL_FLEXFEC_RECEIVE_STREAM_H_