modules/rtp_rtcp/source/rtcp_packet/tmmb_item.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 MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMB_ITEM_H_
#define MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMB_ITEM_H_

#include <stddef.h>
#include <stdint.h>

namespace webrtc {
namespace rtcp {
// RFC5104, Section 3.5.4
// Temporary Maximum Media Stream Bitrate Request/Notification.
// Used both by TMMBR and TMMBN rtcp packets.
class TmmbItem {
 public:
  static constexpr size_t kLength = 8;

  TmmbItem() : ssrc_(0), bitrate_bps_(0), packet_overhead_(0) {}
  TmmbItem(uint32_t ssrc, uint64_t bitrate_bps, uint16_t overhead);

  bool Parse(const uint8_t* buffer);
  void Create(uint8_t* buffer) const;

  void set_ssrc(uint32_t ssrc) { ssrc_ = ssrc; }
  void set_bitrate_bps(uint64_t bitrate_bps) { bitrate_bps_ = bitrate_bps; }
  void set_packet_overhead(uint16_t overhead);

  uint32_t ssrc() const { return ssrc_; }
  uint64_t bitrate_bps() const { return bitrate_bps_; }
  uint16_t packet_overhead() const { return packet_overhead_; }

 private:
  // Media stream id.
  uint32_t ssrc_;
  // Maximum total media bit rate that the media receiver is
  // currently prepared to accept for this media stream.
  uint64_t bitrate_bps_;
  // Per-packet overhead that the media receiver has observed
  // for this media stream at its chosen reference protocol layer.
  uint16_t packet_overhead_;
};
}  // namespace rtcp
}  // namespace webrtc
#endif  // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMB_ITEM_H_