[rtp_rtcp] rtcp::Remb moved into own file

webrtc/modules/rtp_rtcp/source/rtcp_packet/remb.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_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_
-#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_
+#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_
+#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_
 
 #include <vector>
 #include "webrtc/base/basictypes.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
 
 namespace webrtc {
 namespace rtcp {
-
-// Temporary Maximum Media Stream Bit Rate Notification (TMMBN) (RFC 5104).
-class Tmmbn : public RtcpPacket {
+// Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb).
+class Remb : public RtcpPacket {
  public:
-  Tmmbn() : RtcpPacket() {
-    memset(&tmmbn_, 0, sizeof(tmmbn_));
+  Remb() : RtcpPacket() {
+    memset(&remb_, 0, sizeof(remb_));
+    memset(&remb_item_, 0, sizeof(remb_item_));
   }
 
-  virtual ~Tmmbn() {}
+  virtual ~Remb() {}
 
   void From(uint32_t ssrc) {
-    tmmbn_.SenderSSRC = ssrc;
+    remb_.SenderSSRC = ssrc;
   }
-  // Max 50 TMMBR can be added per TMMBN.
-  bool WithTmmbr(uint32_t ssrc, uint32_t bitrate_kbps, uint16_t overhead);
+  void AppliesTo(uint32_t ssrc);
+
+  void WithBitrateBps(uint32_t bitrate_bps) {
+    remb_item_.BitRate = bitrate_bps;
+  }
 
  protected:
   bool Create(uint8_t* packet,
               size_t* index,
               size_t max_length,
               RtcpPacket::PacketReadyCallback* callback) const override;
 
  private:
-  static const int kMaxNumberOfTmmbrs = 50;
+  static const int kMaxNumberOfSsrcs = 0xff;
 
   size_t BlockLength() const {
-    const size_t kFciLen = 8;
-    return kCommonFbFmtLength + kFciLen * tmmbn_items_.size();
+    return (remb_item_.NumberOfSSRCs + 5) * 4;
   }
 
-  RTCPUtility::RTCPPacketRTPFBTMMBN tmmbn_;
-  std::vector<RTCPUtility::RTCPPacketRTPFBTMMBRItem> tmmbn_items_;
+  RTCPUtility::RTCPPacketPSFBAPP remb_;
+  RTCPUtility::RTCPPacketPSFBREMBItem remb_item_;
 
-  RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbn);
+  RTC_DISALLOW_COPY_AND_ASSIGN(Remb);
 };
-
 }  // namespace rtcp
 }  // namespace webrtc
-#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_
+#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_