822a16f64c
Reason for revert: Fix backward compatibility support Original issue's description: > Revert of Unify rtcp packet setters (patchset #8 id:130001 of https://codereview.webrtc.org/2348623003/ ) > > Reason for revert: > Breaks compilation of internal downstream project. > > Original issue's description: > > Unify rtcp packet setters > > Renamed setters in rtcp classes > > from WithField to SetField > > from WithItem to AddItem or SetItems > > from From to SetSenderSsrc > > from To to SetMediaSsrc > > Some redundant or unsued setters removed. > > Pass-by-const& replaced with pass-by-value when appropriate. > > > > BUG=webrtc:5260 > > > > Committed: https://crrev.com/20e77c7b8a9f19942ef3c3c4f1fa3888b2cd54ea > > Cr-Commit-Position: refs/heads/master@{#14393} > > TBR=sprang@webrtc.org,stefan@webrtc.org,danilchap@webrtc.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=webrtc:5260 > > Committed: https://crrev.com/efc6e41866662e0922858fbce1d9ee3bdd0637ed > Cr-Commit-Position: refs/heads/master@{#14400} TBR=sprang@webrtc.org,stefan@webrtc.org,kjellander@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:5260 Review-Url: https://codereview.webrtc.org/2370313002 Cr-Commit-Position: refs/heads/master@{#14402}
101 lines
4.0 KiB
C++
101 lines
4.0 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/tmmbn.h"
|
|
|
|
#include "webrtc/base/checks.h"
|
|
#include "webrtc/base/logging.h"
|
|
#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
|
|
#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/common_header.h"
|
|
|
|
namespace webrtc {
|
|
namespace rtcp {
|
|
constexpr uint8_t Tmmbn::kFeedbackMessageType;
|
|
// RFC 4585: Feedback format.
|
|
// Common packet format:
|
|
//
|
|
// 0 1 2 3
|
|
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// |V=2|P| FMT | PT | length |
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// | SSRC of packet sender |
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// | SSRC of media source (unused) = 0 |
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// : Feedback Control Information (FCI) :
|
|
// : :
|
|
// Temporary Maximum Media Stream Bit Rate Notification (TMMBN) (RFC 5104).
|
|
// The Feedback Control Information (FCI) consists of zero, one, or more
|
|
// TMMBN FCI entries.
|
|
// 0 1 2 3
|
|
// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// | SSRC |
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
// | MxTBR Exp | MxTBR Mantissa |Measured Overhead|
|
|
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
bool Tmmbn::Parse(const CommonHeader& packet) {
|
|
RTC_DCHECK_EQ(packet.type(), kPacketType);
|
|
RTC_DCHECK_EQ(packet.fmt(), kFeedbackMessageType);
|
|
|
|
if (packet.payload_size_bytes() < kCommonFeedbackLength) {
|
|
LOG(LS_WARNING) << "Payload length " << packet.payload_size_bytes()
|
|
<< " is too small for TMMBN.";
|
|
return false;
|
|
}
|
|
size_t items_size_bytes = packet.payload_size_bytes() - kCommonFeedbackLength;
|
|
if (items_size_bytes % TmmbItem::kLength != 0) {
|
|
LOG(LS_WARNING) << "Payload length " << packet.payload_size_bytes()
|
|
<< " is not valid for TMMBN.";
|
|
return false;
|
|
}
|
|
ParseCommonFeedback(packet.payload());
|
|
const uint8_t* next_item = packet.payload() + kCommonFeedbackLength;
|
|
|
|
size_t number_of_items = items_size_bytes / TmmbItem::kLength;
|
|
items_.resize(number_of_items);
|
|
for (TmmbItem& item : items_) {
|
|
if (!item.Parse(next_item))
|
|
return false;
|
|
next_item += TmmbItem::kLength;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void Tmmbn::AddTmmbr(const TmmbItem& item) {
|
|
items_.push_back(item);
|
|
}
|
|
|
|
bool Tmmbn::Create(uint8_t* packet,
|
|
size_t* index,
|
|
size_t max_length,
|
|
RtcpPacket::PacketReadyCallback* callback) const {
|
|
while (*index + BlockLength() > max_length) {
|
|
if (!OnBufferFull(packet, index, callback))
|
|
return false;
|
|
}
|
|
const size_t index_end = *index + BlockLength();
|
|
|
|
CreateHeader(kFeedbackMessageType, kPacketType, HeaderLength(), packet,
|
|
index);
|
|
RTC_DCHECK_EQ(0u, Rtpfb::media_ssrc());
|
|
CreateCommonFeedback(packet + *index);
|
|
*index += kCommonFeedbackLength;
|
|
for (const TmmbItem& item : items_) {
|
|
item.Create(packet + *index);
|
|
*index += TmmbItem::kLength;
|
|
}
|
|
RTC_CHECK_EQ(index_end, *index);
|
|
return true;
|
|
}
|
|
} // namespace rtcp
|
|
} // namespace webrtc
|