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8fa21c49ef
1. To make the files conform to chromium-style guidelines, and stop the compiler from complaing: 1.1. Move constructors out of .h file. 1.2. Move destructors out of .h file. 1.3. Move virtual functions out of .h file. 2. BlockLength() and Create() did not have consistent access modifiers in the various subclasses of RtcpPacket. Change the access level to public throughout. 3. Reorder BlockLength() and Create() where necessary, to reflect the order defined in the parent class (RtcpPacket). BUG=None Review-Url: https://codereview.webrtc.org/2937403002 Cr-Commit-Position: refs/heads/master@{#18633}
97 lines
3.6 KiB
C++
97 lines
3.6 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 "webrtc/modules/rtp_rtcp/source/rtcp_packet/app.h"
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#include "webrtc/base/checks.h"
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#include "webrtc/base/logging.h"
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#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
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#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/common_header.h"
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namespace webrtc {
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namespace rtcp {
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constexpr uint8_t App::kPacketType;
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constexpr size_t App::kMaxDataSize;
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// Application-Defined packet (APP) (RFC 3550).
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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| subtype | PT=APP=204 | length |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// 0 | SSRC/CSRC |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// 4 | name (ASCII) |
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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// 8 | application-dependent data ...
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// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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App::App() : sub_type_(0), ssrc_(0), name_(0) {}
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App::~App() = default;
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bool App::Parse(const CommonHeader& packet) {
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RTC_DCHECK_EQ(packet.type(), kPacketType);
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if (packet.payload_size_bytes() < kAppBaseLength) {
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LOG(LS_WARNING) << "Packet is too small to be a valid APP packet";
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return false;
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}
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if (packet.payload_size_bytes() % 4 != 0) {
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LOG(LS_WARNING)
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<< "Packet payload must be 32 bits aligned to make a valid APP packet";
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return false;
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}
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sub_type_ = packet.fmt();
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ssrc_ = ByteReader<uint32_t>::ReadBigEndian(&packet.payload()[0]);
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name_ = ByteReader<uint32_t>::ReadBigEndian(&packet.payload()[4]);
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data_.SetData(packet.payload() + kAppBaseLength,
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packet.payload_size_bytes() - kAppBaseLength);
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return true;
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}
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void App::SetSubType(uint8_t subtype) {
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RTC_DCHECK_LE(subtype, 0x1f);
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sub_type_ = subtype;
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}
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void App::SetData(const uint8_t* data, size_t data_length) {
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RTC_DCHECK(data);
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RTC_DCHECK_EQ(data_length % 4, 0) << "Data must be 32 bits aligned.";
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RTC_DCHECK_LE(data_length, kMaxDataSize) << "App data size " << data_length
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<< " exceed maximum of "
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<< kMaxDataSize << " bytes.";
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data_.SetData(data, data_length);
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}
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size_t App::BlockLength() const {
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return kHeaderLength + kAppBaseLength + data_.size();
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}
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bool App::Create(uint8_t* packet,
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size_t* index,
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size_t max_length,
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RtcpPacket::PacketReadyCallback* callback) const {
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while (*index + BlockLength() > max_length) {
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if (!OnBufferFull(packet, index, callback))
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return false;
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}
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const size_t index_end = *index + BlockLength();
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CreateHeader(sub_type_, kPacketType, HeaderLength(), packet, index);
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ByteWriter<uint32_t>::WriteBigEndian(&packet[*index + 0], ssrc_);
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ByteWriter<uint32_t>::WriteBigEndian(&packet[*index + 4], name_);
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memcpy(&packet[*index + 8], data_.data(), data_.size());
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*index += (8 + data_.size());
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RTC_DCHECK_EQ(index_end, *index);
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return true;
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}
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} // namespace rtcp
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} // namespace webrtc
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