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/*
* 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_
#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 {
public:
Tmmbn() : RtcpPacket() {
memset(&tmmbn_, 0, sizeof(tmmbn_));
}
virtual ~Tmmbn() {}
void From(uint32_t ssrc) {
tmmbn_.SenderSSRC = ssrc;
}
// Max 50 TMMBR can be added per TMMBN.
bool WithTmmbr(uint32_t ssrc, uint32_t bitrate_kbps, uint16_t overhead);
protected:
bool Create(uint8_t* packet,
size_t* index,
size_t max_length,
RtcpPacket::PacketReadyCallback* callback) const override;
private:
static const int kMaxNumberOfTmmbrs = 50;
size_t BlockLength() const {
const size_t kFciLen = 8;
return kCommonFbFmtLength + kFciLen * tmmbn_items_.size();
}
RTCPUtility::RTCPPacketRTPFBTMMBN tmmbn_;
std::vector<RTCPUtility::RTCPPacketRTPFBTMMBRItem> tmmbn_items_;
RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbn);
};
} // namespace rtcp
} // namespace webrtc
#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_
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