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cbbfd08423
to slightly improve binary size. Bug: None Change-Id: I894c7d67a72f4a8077963d2ba0a7bb471a2e7e4d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/156300 Reviewed-by: Per Kjellander <perkj@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29428}
47 lines
1.9 KiB
C++
47 lines
1.9 KiB
C++
/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/rtp_rtcp/source/rtcp_packet/psfb.h"
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#include "modules/rtp_rtcp/source/byte_io.h"
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namespace webrtc {
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namespace rtcp {
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constexpr uint8_t Psfb::kPacketType;
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constexpr uint8_t Psfb::kAfbMessageType;
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constexpr size_t Psfb::kCommonFeedbackLength;
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// RFC 4585: Feedback format.
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//
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// Common packet format:
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//
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// 0 1 2 3
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// 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
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// |V=2|P| FMT | PT | length |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// 0 | SSRC of packet sender |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// 4 | SSRC of media source |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// : Feedback Control Information (FCI) :
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// : :
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void Psfb::ParseCommonFeedback(const uint8_t* payload) {
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SetSenderSsrc(ByteReader<uint32_t>::ReadBigEndian(&payload[0]));
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SetMediaSsrc(ByteReader<uint32_t>::ReadBigEndian(&payload[4]));
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}
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void Psfb::CreateCommonFeedback(uint8_t* payload) const {
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ByteWriter<uint32_t>::WriteBigEndian(&payload[0], sender_ssrc());
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ByteWriter<uint32_t>::WriteBigEndian(&payload[4], media_ssrc());
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}
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} // namespace rtcp
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} // namespace webrtc
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