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rtcp::Nack packet moved into own file and got Parse function

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Review URL: https://codereview.webrtc.org/1461623003

Cr-Commit-Position: refs/heads/master@{#11111}
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danilchap
2015-12-22 03:43:04 -08:00
committed by Commit bot
parent 53c317c4b9
commit a8890a57a5
13 changed files with 520 additions and 223 deletions
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45
webrtc/modules/rtp_rtcp/source/rtcp_packet/rtpfb.cc Normal file
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/*
* Copyright (c) 2015 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/rtpfb.h"
#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
namespace webrtc {
namespace rtcp {
// RFC 4585, Section 6.1: 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 |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// 0 | SSRC of packet sender |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// 4 | SSRC of media source |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// : Feedback Control Information (FCI) :
// : :
void Rtpfb::ParseCommonFeedback(const uint8_t* payload) {
sender_ssrc_ = ByteReader<uint32_t>::ReadBigEndian(&payload[0]);
media_ssrc_ = ByteReader<uint32_t>::ReadBigEndian(&payload[4]);
}
void Rtpfb::CreateCommonFeedback(uint8_t* payload) const {
ByteWriter<uint32_t>::WriteBigEndian(&payload[0], sender_ssrc_);
ByteWriter<uint32_t>::WriteBigEndian(&payload[4], media_ssrc_);
}
} // namespace rtcp
} // namespace webrtc