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Use rtc::CopyOnWriteBuffer::MutableData through webrtc

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where mutable access is required.

Bug: webrtc:12334
Change-Id: I4b2b74f836aaf7f12278c3569d0d49936297716b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/198846
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32936}
This commit is contained in:
Danil Chapovalov 2021-01-07 15:24:05 +01:00 committed by Commit Bot
parent da06e8f6bd
commit e15dc58f32
27 changed files with 99 additions and 87 deletions
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3
media/base/fake_network_interface.h
View File

@ -129,7 +129,8 @@ class FakeNetworkInterface : public MediaChannel::NetworkInterface,
rtp_packets_.push_back(*packet); rtp_packets_.push_back(*packet);
if (conf_) { if (conf_) {
for (size_t i = 0; i < conf_sent_ssrcs_.size(); ++i) { for (size_t i = 0; i < conf_sent_ssrcs_.size(); ++i) {
if (!SetRtpSsrc(packet->data(), packet->size(), conf_sent_ssrcs_[i])) { if (!SetRtpSsrc(packet->MutableData(), packet->size(),
conf_sent_ssrcs_[i])) {
return false; return false;
} }
PostMessage(ST_RTP, *packet); PostMessage(ST_RTP, *packet);

2
media/base/rtp_data_engine.cc
View File

@ -312,7 +312,7 @@ bool RtpDataMediaChannel::SendData(const SendDataParams& params,
&header.timestamp); &header.timestamp);
rtc::CopyOnWriteBuffer packet(kMinRtpPacketLen, packet_len); rtc::CopyOnWriteBuffer packet(kMinRtpPacketLen, packet_len);
if (!SetRtpHeader(packet.data(), packet.size(), header)) { if (!SetRtpHeader(packet.MutableData(), packet.size(), header)) {
return false; return false;
} }
packet.AppendData(kReservedSpace); packet.AppendData(kReservedSpace);

2
media/engine/webrtc_video_engine_unittest.cc
View File

@ -2050,7 +2050,7 @@ TEST_F(WebRtcVideoChannelBaseTest, SetSink) {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
rtc::CopyOnWriteBuffer packet1(data1, sizeof(data1)); rtc::CopyOnWriteBuffer packet1(data1, sizeof(data1));
rtc::SetBE32(packet1.data() + 8, kSsrc); rtc::SetBE32(packet1.MutableData() + 8, kSsrc);
channel_->SetDefaultSink(NULL); channel_->SetDefaultSink(NULL);
EXPECT_TRUE(SetDefaultCodec()); EXPECT_TRUE(SetDefaultCodec());
EXPECT_TRUE(SetSend(true)); EXPECT_TRUE(SetSend(true));

8
media/sctp/sctp_transport.cc
View File

@ -1136,14 +1136,14 @@ void SctpTransport::OnPacketFromSctpToNetwork(
} }
int SctpTransport::InjectDataOrNotificationFromSctpForTesting( int SctpTransport::InjectDataOrNotificationFromSctpForTesting(
void* data, const void* data,
size_t length, size_t length,
struct sctp_rcvinfo rcv, struct sctp_rcvinfo rcv,
int flags) { int flags) {
return OnDataOrNotificationFromSctp(data, length, rcv, flags); return OnDataOrNotificationFromSctp(data, length, rcv, flags);
} }
int SctpTransport::OnDataOrNotificationFromSctp(void* data, int SctpTransport::OnDataOrNotificationFromSctp(const void* data,
size_t length, size_t length,
struct sctp_rcvinfo rcv, struct sctp_rcvinfo rcv,
int flags) { int flags) {
@ -1166,7 +1166,7 @@ int SctpTransport::OnDataOrNotificationFromSctp(void* data,
<< " length=" << length; << " length=" << length;
// Copy and dispatch asynchronously // Copy and dispatch asynchronously
rtc::CopyOnWriteBuffer notification(reinterpret_cast<uint8_t*>(data), rtc::CopyOnWriteBuffer notification(reinterpret_cast<const uint8_t*>(data),
length); length);
network_thread_->PostTask(ToQueuedTask( network_thread_->PostTask(ToQueuedTask(
task_safety_, [this, notification = std::move(notification)]() { task_safety_, [this, notification = std::move(notification)]() {
@ -1216,7 +1216,7 @@ int SctpTransport::OnDataOrNotificationFromSctp(void* data,
params.timestamp = 0; params.timestamp = 0;
// Append the chunk's data to the message buffer // Append the chunk's data to the message buffer
partial_incoming_message_.AppendData(reinterpret_cast<uint8_t*>(data), partial_incoming_message_.AppendData(reinterpret_cast<const uint8_t*>(data),
length); length);
partial_params_ = params; partial_params_ = params;
partial_flags_ = flags; partial_flags_ = flags;

4
media/sctp/sctp_transport.h
View File

@ -96,7 +96,7 @@ class SctpTransport : public SctpTransportInternal,
void set_debug_name_for_testing(const char* debug_name) override { void set_debug_name_for_testing(const char* debug_name) override {
debug_name_ = debug_name; debug_name_ = debug_name;
} }
int InjectDataOrNotificationFromSctpForTesting(void* data, int InjectDataOrNotificationFromSctpForTesting(const void* data,
size_t length, size_t length,
struct sctp_rcvinfo rcv, struct sctp_rcvinfo rcv,
int flags); int flags);
@ -182,7 +182,7 @@ class SctpTransport : public SctpTransportInternal,
// Called on the SCTP thread. // Called on the SCTP thread.
// Flags are standard socket API flags (RFC 6458). // Flags are standard socket API flags (RFC 6458).
int OnDataOrNotificationFromSctp(void* data, int OnDataOrNotificationFromSctp(const void* data,
size_t length, size_t length,
struct sctp_rcvinfo rcv, struct sctp_rcvinfo rcv,
int flags); int flags);

2
media/sctp/sctp_transport_unittest.cc
View File

@ -589,7 +589,7 @@ TEST_P(SctpTransportTestWithOrdered, SignalReadyToSendDataAfterBlocked) {
params.sid = 1; params.sid = 1;
params.ordered = GetParam(); params.ordered = GetParam();
rtc::CopyOnWriteBuffer buf(1024); rtc::CopyOnWriteBuffer buf(1024);
memset(buf.data<uint8_t>(), 0, 1024); memset(buf.MutableData(), 0, 1024);
SendDataResult result; SendDataResult result;
size_t message_count = 0; size_t message_count = 0;
for (; message_count < kMaxMessages; ++message_count) { for (; message_count < kMaxMessages; ++message_count) {

12
modules/rtp_rtcp/source/fec_test_helper.cc
View File

@ -57,7 +57,7 @@ ForwardErrorCorrection::PacketList MediaPacketGenerator::ConstructMediaPackets(
media_packet->data.SetSize( media_packet->data.SetSize(
random_->Rand(min_packet_size_, max_packet_size_)); random_->Rand(min_packet_size_, max_packet_size_));
uint8_t* data = media_packet->data.data(); uint8_t* data = media_packet->data.MutableData();
// Generate random values for the first 2 bytes // Generate random values for the first 2 bytes
data[0] = random_->Rand<uint8_t>(); data[0] = random_->Rand<uint8_t>();
data[1] = random_->Rand<uint8_t>(); data[1] = random_->Rand<uint8_t>();
@ -88,7 +88,7 @@ ForwardErrorCorrection::PacketList MediaPacketGenerator::ConstructMediaPackets(
// Last packet, set marker bit. // Last packet, set marker bit.
ForwardErrorCorrection::Packet* media_packet = media_packets.back().get(); ForwardErrorCorrection::Packet* media_packet = media_packets.back().get();
RTC_DCHECK(media_packet); RTC_DCHECK(media_packet);
media_packet->data[1] |= 0x80; media_packet->data.MutableData()[1] |= 0x80;
next_seq_num_ = seq_num; next_seq_num_ = seq_num;
@ -122,7 +122,7 @@ std::unique_ptr<AugmentedPacket> AugmentedPacketGenerator::NextPacket(
std::unique_ptr<AugmentedPacket> packet(new AugmentedPacket()); std::unique_ptr<AugmentedPacket> packet(new AugmentedPacket());
packet->data.SetSize(length + kRtpHeaderSize); packet->data.SetSize(length + kRtpHeaderSize);
uint8_t* data = packet->data.data(); uint8_t* data = packet->data.MutableData();
for (size_t i = 0; i < length; ++i) for (size_t i = 0; i < length; ++i)
data[i + kRtpHeaderSize] = offset + i; data[i + kRtpHeaderSize] = offset + i;
packet->data.SetSize(length + kRtpHeaderSize); packet->data.SetSize(length + kRtpHeaderSize);
@ -132,7 +132,7 @@ std::unique_ptr<AugmentedPacket> AugmentedPacketGenerator::NextPacket(
packet->header.sequenceNumber = seq_num_; packet->header.sequenceNumber = seq_num_;
packet->header.timestamp = timestamp_; packet->header.timestamp = timestamp_;
packet->header.ssrc = ssrc_; packet->header.ssrc = ssrc_;
WriteRtpHeader(packet->header, packet->data.data()); WriteRtpHeader(packet->header, data);
++seq_num_; ++seq_num_;
--num_packets_; --num_packets_;
@ -171,8 +171,8 @@ std::unique_ptr<AugmentedPacket> FlexfecPacketGenerator::BuildFlexfecPacket(
std::unique_ptr<AugmentedPacket> packet_with_rtp_header( std::unique_ptr<AugmentedPacket> packet_with_rtp_header(
new AugmentedPacket()); new AugmentedPacket());
packet_with_rtp_header->data.SetSize(kRtpHeaderSize + packet.data.size()); packet_with_rtp_header->data.SetSize(kRtpHeaderSize + packet.data.size());
WriteRtpHeader(header, packet_with_rtp_header->data.data()); WriteRtpHeader(header, packet_with_rtp_header->data.MutableData());
memcpy(packet_with_rtp_header->data.data() + kRtpHeaderSize, memcpy(packet_with_rtp_header->data.MutableData() + kRtpHeaderSize,
packet.data.cdata(), packet.data.size()); packet.data.cdata(), packet.data.size());
return packet_with_rtp_header; return packet_with_rtp_header;

7
modules/rtp_rtcp/source/flexfec_header_reader_writer.cc
View File

@ -85,7 +85,7 @@ bool FlexfecHeaderReader::ReadFecHeader(
RTC_LOG(LS_WARNING) << "Discarding truncated FlexFEC packet."; RTC_LOG(LS_WARNING) << "Discarding truncated FlexFEC packet.";
return false; return false;
} }
uint8_t* const data = fec_packet->pkt->data.data(); uint8_t* const data = fec_packet->pkt->data.MutableData();
bool r_bit = (data[0] & 0x80) != 0; bool r_bit = (data[0] & 0x80) != 0;
if (r_bit) { if (r_bit) {
RTC_LOG(LS_INFO) RTC_LOG(LS_INFO)
@ -249,7 +249,7 @@ void FlexfecHeaderWriter::FinalizeFecHeader(
const uint8_t* packet_mask, const uint8_t* packet_mask,
size_t packet_mask_size, size_t packet_mask_size,
ForwardErrorCorrection::Packet* fec_packet) const { ForwardErrorCorrection::Packet* fec_packet) const {
uint8_t* data = fec_packet->data.data(); uint8_t* data = fec_packet->data.MutableData();
data[0] &= 0x7f; // Clear R bit. data[0] &= 0x7f; // Clear R bit.
data[0] &= 0xbf; // Clear F bit. data[0] &= 0xbf; // Clear F bit.
ByteWriter<uint8_t>::WriteBigEndian(&data[8], kSsrcCount); ByteWriter<uint8_t>::WriteBigEndian(&data[8], kSsrcCount);
@ -260,8 +260,7 @@ void FlexfecHeaderWriter::FinalizeFecHeader(
// //
// We treat the mask parts as unsigned integers with host order endianness // We treat the mask parts as unsigned integers with host order endianness
// in order to simplify the bit shifting between bytes. // in order to simplify the bit shifting between bytes.
uint8_t* const written_packet_mask = uint8_t* const written_packet_mask = data + kPacketMaskOffset;
fec_packet->data.data() + kPacketMaskOffset;
if (packet_mask_size == kUlpfecPacketMaskSizeLBitSet) { if (packet_mask_size == kUlpfecPacketMaskSizeLBitSet) {
// The packet mask is 48 bits long. // The packet mask is 48 bits long.
uint16_t tmp_mask_part0 = uint16_t tmp_mask_part0 =

12
modules/rtp_rtcp/source/flexfec_header_reader_writer_unittest.cc
View File

@ -78,8 +78,9 @@ rtc::scoped_refptr<Packet> WriteHeader(const uint8_t* packet_mask,
FlexfecHeaderWriter writer; FlexfecHeaderWriter writer;
rtc::scoped_refptr<Packet> written_packet(new Packet()); rtc::scoped_refptr<Packet> written_packet(new Packet());
written_packet->data.SetSize(kMediaPacketLength); written_packet->data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet->data.MutableData();
for (size_t i = 0; i < written_packet->data.size(); ++i) { for (size_t i = 0; i < written_packet->data.size(); ++i) {
written_packet->data[i] = i; // Actual content doesn't matter. data[i] = i; // Actual content doesn't matter.
} }
writer.FinalizeFecHeader(kMediaSsrc, kMediaStartSeqNum, packet_mask, writer.FinalizeFecHeader(kMediaSsrc, kMediaStartSeqNum, packet_mask,
packet_mask_size, written_packet.get()); packet_mask_size, written_packet.get());
@ -328,8 +329,9 @@ TEST(FlexfecHeaderWriterTest, FinalizesHeaderWithKBit0Set) {
constexpr uint8_t kUlpfecPacketMask[] = {0x11, 0x02}; constexpr uint8_t kUlpfecPacketMask[] = {0x11, 0x02};
Packet written_packet; Packet written_packet;
written_packet.data.SetSize(kMediaPacketLength); written_packet.data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet.data.MutableData();
for (size_t i = 0; i < written_packet.data.size(); ++i) { for (size_t i = 0; i < written_packet.data.size(); ++i) {
written_packet.data[i] = i; data[i] = i;
} }
FlexfecHeaderWriter writer; FlexfecHeaderWriter writer;
@ -346,8 +348,9 @@ TEST(FlexfecHeaderWriterTest, FinalizesHeaderWithKBit1Set) {
constexpr uint8_t kUlpfecPacketMask[] = {0x91, 0x02, 0x08, 0x44, 0x00, 0x84}; constexpr uint8_t kUlpfecPacketMask[] = {0x91, 0x02, 0x08, 0x44, 0x00, 0x84};
Packet written_packet; Packet written_packet;
written_packet.data.SetSize(kMediaPacketLength); written_packet.data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet.data.MutableData();
for (size_t i = 0; i < written_packet.data.size(); ++i) { for (size_t i = 0; i < written_packet.data.size(); ++i) {
written_packet.data[i] = i; data[i] = i;
} }
FlexfecHeaderWriter writer; FlexfecHeaderWriter writer;
@ -368,8 +371,9 @@ TEST(FlexfecHeaderWriterTest, FinalizesHeaderWithKBit2Set) {
constexpr uint8_t kUlpfecPacketMask[] = {0x22, 0x22, 0x44, 0x44, 0x44, 0x41}; constexpr uint8_t kUlpfecPacketMask[] = {0x22, 0x22, 0x44, 0x44, 0x44, 0x41};
Packet written_packet; Packet written_packet;
written_packet.data.SetSize(kMediaPacketLength); written_packet.data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet.data.MutableData();
for (size_t i = 0; i < written_packet.data.size(); ++i) { for (size_t i = 0; i < written_packet.data.size(); ++i) {
written_packet.data[i] = i; data[i] = i;
} }
FlexfecHeaderWriter writer; FlexfecHeaderWriter writer;

16
modules/rtp_rtcp/source/flexfec_receiver_unittest.cc
View File

@ -165,10 +165,10 @@ TEST_F(FlexfecReceiverTest, FailsOnUnknownMediaSsrc) {
PacketizeFrame(kNumMediaPackets, 0, &media_packets); PacketizeFrame(kNumMediaPackets, 0, &media_packets);
auto& media_packet = media_packets.front(); auto& media_packet = media_packets.front();
// Corrupt the SSRC. // Corrupt the SSRC.
media_packet->data[8] = 0; media_packet->data.MutableData()[8] = 0;
media_packet->data[9] = 1; media_packet->data.MutableData()[9] = 1;
media_packet->data[10] = 2; media_packet->data.MutableData()[10] = 2;
media_packet->data[11] = 3; media_packet->data.MutableData()[11] = 3;
EXPECT_FALSE(receiver_.AddReceivedPacket(ParsePacket(*media_packet))); EXPECT_FALSE(receiver_.AddReceivedPacket(ParsePacket(*media_packet)));
} }
@ -183,10 +183,10 @@ TEST_F(FlexfecReceiverTest, FailsOnUnknownFecSsrc) {
const auto& media_packet = media_packets.front(); const auto& media_packet = media_packets.front();
auto fec_packet = packet_generator_.BuildFlexfecPacket(*fec_packets.front()); auto fec_packet = packet_generator_.BuildFlexfecPacket(*fec_packets.front());
// Corrupt the SSRC. // Corrupt the SSRC.
fec_packet->data[8] = 4; fec_packet->data.MutableData()[8] = 4;
fec_packet->data[9] = 5; fec_packet->data.MutableData()[9] = 5;
fec_packet->data[10] = 6; fec_packet->data.MutableData()[10] = 6;
fec_packet->data[11] = 7; fec_packet->data.MutableData()[11] = 7;
std::unique_ptr<ForwardErrorCorrection::ReceivedPacket> received_packet = std::unique_ptr<ForwardErrorCorrection::ReceivedPacket> received_packet =
receiver_.AddReceivedPacket(ParsePacket(*media_packet)); receiver_.AddReceivedPacket(ParsePacket(*media_packet));

20
modules/rtp_rtcp/source/forward_error_correction.cc
View File

@ -151,7 +151,7 @@ int ForwardErrorCorrection::EncodeFec(const PacketList& media_packets,
} }
for (int i = 0; i < num_fec_packets; ++i) { for (int i = 0; i < num_fec_packets; ++i) {
generated_fec_packets_[i].data.EnsureCapacity(IP_PACKET_SIZE); generated_fec_packets_[i].data.EnsureCapacity(IP_PACKET_SIZE);
memset(generated_fec_packets_[i].data.data(), 0, IP_PACKET_SIZE); memset(generated_fec_packets_[i].data.MutableData(), 0, IP_PACKET_SIZE);
// Use this as a marker for untouched packets. // Use this as a marker for untouched packets.
generated_fec_packets_[i].data.SetSize(0); generated_fec_packets_[i].data.SetSize(0);
fec_packets->push_back(&generated_fec_packets_[i]); fec_packets->push_back(&generated_fec_packets_[i]);
@ -231,7 +231,7 @@ void ForwardErrorCorrection::GenerateFecPayloads(
fec_packet->data.SetSize(fec_packet_length); fec_packet->data.SetSize(fec_packet_length);
} }
if (first_protected_packet) { if (first_protected_packet) {
uint8_t* data = fec_packet->data.data(); uint8_t* data = fec_packet->data.MutableData();
// Write P, X, CC, M, and PT recovery fields. // Write P, X, CC, M, and PT recovery fields.
// Note that bits 0, 1, and 16 are overwritten in FinalizeFecHeaders. // Note that bits 0, 1, and 16 are overwritten in FinalizeFecHeaders.
memcpy(&data[0], &media_packet_data[0], 2); memcpy(&data[0], &media_packet_data[0], 2);
@ -567,11 +567,11 @@ bool ForwardErrorCorrection::StartPacketRecovery(
// Copy bytes corresponding to minimum RTP header size. // Copy bytes corresponding to minimum RTP header size.
// Note that the sequence number and SSRC fields will be overwritten // Note that the sequence number and SSRC fields will be overwritten
// at the end of packet recovery. // at the end of packet recovery.
memcpy(recovered_packet->pkt->data.data(), fec_packet.pkt->data.cdata(), memcpy(recovered_packet->pkt->data.MutableData(),
kRtpHeaderSize); fec_packet.pkt->data.cdata(), kRtpHeaderSize);
// Copy remaining FEC payload. // Copy remaining FEC payload.
if (fec_packet.protection_length > 0) { if (fec_packet.protection_length > 0) {
memcpy(recovered_packet->pkt->data.data() + kRtpHeaderSize, memcpy(recovered_packet->pkt->data.MutableData() + kRtpHeaderSize,
fec_packet.pkt->data.cdata() + fec_packet.fec_header_size, fec_packet.pkt->data.cdata() + fec_packet.fec_header_size,
fec_packet.protection_length); fec_packet.protection_length);
} }
@ -581,7 +581,7 @@ bool ForwardErrorCorrection::StartPacketRecovery(
bool ForwardErrorCorrection::FinishPacketRecovery( bool ForwardErrorCorrection::FinishPacketRecovery(
const ReceivedFecPacket& fec_packet, const ReceivedFecPacket& fec_packet,
RecoveredPacket* recovered_packet) { RecoveredPacket* recovered_packet) {
uint8_t* data = recovered_packet->pkt->data.data(); uint8_t* data = recovered_packet->pkt->data.MutableData();
// Set the RTP version to 2. // Set the RTP version to 2.
data[0] |= 0x80; // Set the 1st bit. data[0] |= 0x80; // Set the 1st bit.
data[0] &= 0xbf; // Clear the 2nd bit. data[0] &= 0xbf; // Clear the 2nd bit.
@ -603,7 +603,7 @@ bool ForwardErrorCorrection::FinishPacketRecovery(
} }
void ForwardErrorCorrection::XorHeaders(const Packet& src, Packet* dst) { void ForwardErrorCorrection::XorHeaders(const Packet& src, Packet* dst) {
uint8_t* dst_data = dst->data.data(); uint8_t* dst_data = dst->data.MutableData();
const uint8_t* src_data = src.data.cdata(); const uint8_t* src_data = src.data.cdata();
// XOR the first 2 bytes of the header: V, P, X, CC, M, PT fields. // XOR the first 2 bytes of the header: V, P, X, CC, M, PT fields.
dst_data[0] ^= src_data[0]; dst_data[0] ^= src_data[0];
@ -635,7 +635,7 @@ void ForwardErrorCorrection::XorPayloads(const Packet& src,
if (dst_offset + payload_length > dst->data.size()) { if (dst_offset + payload_length > dst->data.size()) {
dst->data.SetSize(dst_offset + payload_length); dst->data.SetSize(dst_offset + payload_length);
} }
uint8_t* dst_data = dst->data.data(); uint8_t* dst_data = dst->data.MutableData();
const uint8_t* src_data = src.data.cdata(); const uint8_t* src_data = src.data.cdata();
for (size_t i = 0; i < payload_length; ++i) { for (size_t i = 0; i < payload_length; ++i) {
dst_data[dst_offset + i] ^= src_data[kRtpHeaderSize + i]; dst_data[dst_offset + i] ^= src_data[kRtpHeaderSize + i];
@ -731,11 +731,11 @@ void ForwardErrorCorrection::DiscardOldRecoveredPackets(
RTC_DCHECK_LE(recovered_packets->size(), max_media_packets); RTC_DCHECK_LE(recovered_packets->size(), max_media_packets);
} }
uint16_t ForwardErrorCorrection::ParseSequenceNumber(uint8_t* packet) { uint16_t ForwardErrorCorrection::ParseSequenceNumber(const uint8_t* packet) {
return (packet[2] << 8) + packet[3]; return (packet[2] << 8) + packet[3];
} }
uint32_t ForwardErrorCorrection::ParseSsrc(uint8_t* packet) { uint32_t ForwardErrorCorrection::ParseSsrc(const uint8_t* packet) {
return (packet[8] << 24) + (packet[9] << 16) + (packet[10] << 8) + packet[11]; return (packet[8] << 24) + (packet[9] << 16) + (packet[10] << 8) + packet[11];
} }

4
modules/rtp_rtcp/source/forward_error_correction.h
View File

@ -235,8 +235,8 @@ class ForwardErrorCorrection {
// TODO(brandtr): Remove these functions when the Packet classes // TODO(brandtr): Remove these functions when the Packet classes
// have been refactored. // have been refactored.
static uint16_t ParseSequenceNumber(uint8_t* packet); static uint16_t ParseSequenceNumber(const uint8_t* packet);
static uint32_t ParseSsrc(uint8_t* packet); static uint32_t ParseSsrc(const uint8_t* packet);
protected: protected:
ForwardErrorCorrection(std::unique_ptr<FecHeaderReader> fec_header_reader, ForwardErrorCorrection(std::unique_ptr<FecHeaderReader> fec_header_reader,

21
modules/rtp_rtcp/source/rtp_fec_unittest.cc
View File

@ -127,7 +127,7 @@ void RtpFecTest<ForwardErrorCorrectionType>::ReceivedPackets(
// For media packets, the sequence number is obtained from the // For media packets, the sequence number is obtained from the
// RTP header as written by MediaPacketGenerator::ConstructMediaPackets. // RTP header as written by MediaPacketGenerator::ConstructMediaPackets.
received_packet->seq_num = received_packet->seq_num =
ByteReader<uint16_t>::ReadBigEndian(&packet->data[2]); ByteReader<uint16_t>::ReadBigEndian(packet->data.data() + 2);
} else { } else {
received_packet->ssrc = ForwardErrorCorrectionType::kFecSsrc; received_packet->ssrc = ForwardErrorCorrectionType::kFecSsrc;
// For FEC packets, we simulate the sequence numbers differently // For FEC packets, we simulate the sequence numbers differently
@ -222,10 +222,10 @@ TYPED_TEST(RtpFecTest, WillProtectMediaPacketsWithLargeSequenceNumberGap) {
this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets);
// Create |kMaxMediaPackets - 1| sequence number difference. // Create |kMaxMediaPackets - 1| sequence number difference.
ByteWriter<uint16_t>::WriteBigEndian(&this->media_packets_.front()->data[2], ByteWriter<uint16_t>::WriteBigEndian(
1); this->media_packets_.front()->data.MutableData() + 2, 1);
ByteWriter<uint16_t>::WriteBigEndian(&this->media_packets_.back()->data[2], ByteWriter<uint16_t>::WriteBigEndian(
kMaxMediaPackets); this->media_packets_.back()->data.MutableData() + 2, kMaxMediaPackets);
EXPECT_EQ( EXPECT_EQ(
0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor, 0, this->fec_.EncodeFec(this->media_packets_, kProtectionFactor,
@ -245,9 +245,10 @@ TYPED_TEST(RtpFecTest,
this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets); this->media_packet_generator_.ConstructMediaPackets(kNumMediaPackets);
// Create |kMaxMediaPackets| sequence number difference. // Create |kMaxMediaPackets| sequence number difference.
ByteWriter<uint16_t>::WriteBigEndian(&this->media_packets_.front()->data[2], ByteWriter<uint16_t>::WriteBigEndian(
1); this->media_packets_.front()->data.MutableData() + 2, 1);
ByteWriter<uint16_t>::WriteBigEndian(&this->media_packets_.back()->data[2], ByteWriter<uint16_t>::WriteBigEndian(
this->media_packets_.back()->data.MutableData() + 2,
kMaxMediaPackets + 1); kMaxMediaPackets + 1);
EXPECT_EQ( EXPECT_EQ(
@ -526,9 +527,9 @@ TEST_F(RtpFecTestFlexfecOnly, FecRecoveryWithSeqNumGapOneFrameNoRecovery) {
// Overwrite the sequence numbers generated by ConstructMediaPackets, // Overwrite the sequence numbers generated by ConstructMediaPackets,
// to make sure that we do have a wrap. // to make sure that we do have a wrap.
auto it = this->generated_fec_packets_.begin(); auto it = this->generated_fec_packets_.begin();
ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data[2], 65535); ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data.MutableData()[2], 65535);
++it; ++it;
ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data[2], 0); ByteWriter<uint16_t>::WriteBigEndian(&(*it)->data.MutableData()[2], 0);
// Lose the last two media packets (seq# 65533, 65534). // Lose the last two media packets (seq# 65533, 65534).
memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_)); memset(this->media_loss_mask_, 0, sizeof(this->media_loss_mask_));

6
modules/rtp_rtcp/source/rtp_packet.h
View File

@ -180,8 +180,10 @@ class RtpPacket {
uint16_t SetExtensionLengthMaybeAddZeroPadding(size_t extensions_offset); uint16_t SetExtensionLengthMaybeAddZeroPadding(size_t extensions_offset);
uint8_t* WriteAt(size_t offset) { return buffer_.data() + offset; } uint8_t* WriteAt(size_t offset) { return buffer_.MutableData() + offset; }
void WriteAt(size_t offset, uint8_t byte) { buffer_.data()[offset] = byte; } void WriteAt(size_t offset, uint8_t byte) {
buffer_.MutableData()[offset] = byte;
}
const uint8_t* ReadAt(size_t offset) const { return buffer_.data() + offset; } const uint8_t* ReadAt(size_t offset) const { return buffer_.data() + offset; }
// Header. // Header.

4
modules/rtp_rtcp/source/ulpfec_header_reader_writer.cc
View File

@ -57,7 +57,7 @@ UlpfecHeaderReader::~UlpfecHeaderReader() = default;
bool UlpfecHeaderReader::ReadFecHeader( bool UlpfecHeaderReader::ReadFecHeader(
ForwardErrorCorrection::ReceivedFecPacket* fec_packet) const { ForwardErrorCorrection::ReceivedFecPacket* fec_packet) const {
uint8_t* data = fec_packet->pkt->data.data(); uint8_t* data = fec_packet->pkt->data.MutableData();
if (fec_packet->pkt->data.size() < kPacketMaskOffset) { if (fec_packet->pkt->data.size() < kPacketMaskOffset) {
return false; // Truncated packet. return false; // Truncated packet.
} }
@ -108,7 +108,7 @@ void UlpfecHeaderWriter::FinalizeFecHeader(
const uint8_t* packet_mask, const uint8_t* packet_mask,
size_t packet_mask_size, size_t packet_mask_size,
ForwardErrorCorrection::Packet* fec_packet) const { ForwardErrorCorrection::Packet* fec_packet) const {
uint8_t* data = fec_packet->data.data(); uint8_t* data = fec_packet->data.MutableData();
// Set E bit to zero. // Set E bit to zero.
data[0] &= 0x7f; data[0] &= 0x7f;
// Set L bit based on packet mask size. (Note that the packet mask // Set L bit based on packet mask size. (Note that the packet mask

12
modules/rtp_rtcp/source/ulpfec_header_reader_writer_unittest.cc
View File

@ -53,8 +53,9 @@ std::unique_ptr<Packet> WriteHeader(const uint8_t* packet_mask,
UlpfecHeaderWriter writer; UlpfecHeaderWriter writer;
std::unique_ptr<Packet> written_packet(new Packet()); std::unique_ptr<Packet> written_packet(new Packet());
written_packet->data.SetSize(kMediaPacketLength); written_packet->data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet->data.MutableData();
for (size_t i = 0; i < written_packet->data.size(); ++i) { for (size_t i = 0; i < written_packet->data.size(); ++i) {
written_packet->data[i] = i; // Actual content doesn't matter. data[i] = i; // Actual content doesn't matter.
} }
writer.FinalizeFecHeader(kMediaSsrc, kMediaStartSeqNum, packet_mask, writer.FinalizeFecHeader(kMediaSsrc, kMediaStartSeqNum, packet_mask,
packet_mask_size, written_packet.get()); packet_mask_size, written_packet.get());
@ -85,7 +86,8 @@ void VerifyHeaders(size_t expected_fec_header_size,
EXPECT_EQ(written_packet.data.size() - expected_fec_header_size, EXPECT_EQ(written_packet.data.size() - expected_fec_header_size,
read_packet.protection_length); read_packet.protection_length);
EXPECT_EQ(0, memcmp(expected_packet_mask, EXPECT_EQ(0, memcmp(expected_packet_mask,
&read_packet.pkt->data[read_packet.packet_mask_offset], read_packet.pkt->data.MutableData() +
read_packet.packet_mask_offset,
read_packet.packet_mask_size)); read_packet.packet_mask_size));
// Verify that the call to ReadFecHeader did not tamper with the payload. // Verify that the call to ReadFecHeader did not tamper with the payload.
EXPECT_EQ(0, memcmp(written_packet.data.data() + expected_fec_header_size, EXPECT_EQ(0, memcmp(written_packet.data.data() + expected_fec_header_size,
@ -147,8 +149,9 @@ TEST(UlpfecHeaderWriterTest, FinalizesSmallHeader) {
auto packet_mask = GeneratePacketMask(packet_mask_size, 0xabcd); auto packet_mask = GeneratePacketMask(packet_mask_size, 0xabcd);
Packet written_packet; Packet written_packet;
written_packet.data.SetSize(kMediaPacketLength); written_packet.data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet.data.MutableData();
for (size_t i = 0; i < written_packet.data.size(); ++i) { for (size_t i = 0; i < written_packet.data.size(); ++i) {
written_packet.data[i] = i; data[i] = i;
} }
UlpfecHeaderWriter writer; UlpfecHeaderWriter writer;
@ -171,8 +174,9 @@ TEST(UlpfecHeaderWriterTest, FinalizesLargeHeader) {
auto packet_mask = GeneratePacketMask(packet_mask_size, 0xabcd); auto packet_mask = GeneratePacketMask(packet_mask_size, 0xabcd);
Packet written_packet; Packet written_packet;
written_packet.data.SetSize(kMediaPacketLength); written_packet.data.SetSize(kMediaPacketLength);
uint8_t* data = written_packet.data.MutableData();
for (size_t i = 0; i < written_packet.data.size(); ++i) { for (size_t i = 0; i < written_packet.data.size(); ++i) {
written_packet.data[i] = i; data[i] = i;
} }
UlpfecHeaderWriter writer; UlpfecHeaderWriter writer;

5
modules/rtp_rtcp/source/ulpfec_receiver_impl.cc
View File

@ -135,8 +135,9 @@ bool UlpfecReceiverImpl::AddReceivedRedPacket(
received_packet->pkt->data.SetData(rtp_packet.data(), received_packet->pkt->data.SetData(rtp_packet.data(),
rtp_packet.headers_size()); rtp_packet.headers_size());
// Set payload type. // Set payload type.
received_packet->pkt->data[1] &= 0x80; // Reset RED payload type. uint8_t& payload_type_byte = received_packet->pkt->data.MutableData()[1];
received_packet->pkt->data[1] += payload_type; // Set media payload type. payload_type_byte &= 0x80; // Reset RED payload type.
payload_type_byte += payload_type; // Set media payload type.
// Copy payload data. // Copy payload data.
received_packet->pkt->data.AppendData(red_payload.data(), received_packet->pkt->data.AppendData(red_payload.data(),
red_payload.size()); red_payload.size());

2
modules/rtp_rtcp/source/ulpfec_receiver_unittest.cc
View File

@ -158,7 +158,7 @@ void UlpfecReceiverTest::InjectGarbagePacketLength(size_t fec_garbage_offset) {
std::list<ForwardErrorCorrection::Packet*> fec_packets; std::list<ForwardErrorCorrection::Packet*> fec_packets;
EncodeFec(media_packets, kNumFecPackets, &fec_packets); EncodeFec(media_packets, kNumFecPackets, &fec_packets);
ByteWriter<uint16_t>::WriteBigEndian( ByteWriter<uint16_t>::WriteBigEndian(
&fec_packets.front()->data[fec_garbage_offset], 0x4711); fec_packets.front()->data.MutableData() + fec_garbage_offset, 0x4711);
// Inject first media packet, then first FEC packet, skipping the second media // Inject first media packet, then first FEC packet, skipping the second media
// packet to cause a recovery from the FEC packet. // packet to cause a recovery from the FEC packet.

2
modules/rtp_rtcp/source/video_rtp_depacketizer_h264.cc
View File

@ -264,7 +264,7 @@ absl::optional<VideoRtpDepacketizer::ParsedRtpPayload> ParseFuaNalu(
uint8_t original_nal_header = fnri | original_nal_type; uint8_t original_nal_header = fnri | original_nal_type;
rtp_payload = rtp_payload =
rtp_payload.Slice(kNalHeaderSize, rtp_payload.size() - kNalHeaderSize); rtp_payload.Slice(kNalHeaderSize, rtp_payload.size() - kNalHeaderSize);
rtp_payload[0] = original_nal_header; rtp_payload.MutableData()[0] = original_nal_header;
parsed_payload->video_payload = std::move(rtp_payload); parsed_payload->video_payload = std::move(rtp_payload);
} else { } else {
parsed_payload->video_payload = parsed_payload->video_payload =

8
modules/rtp_rtcp/test/testFec/test_fec.cc
View File

@ -254,7 +254,7 @@ void RunTest(bool use_flexfec) {
random.Rand(kMinPacketSize, kMaxPacketSize); random.Rand(kMinPacketSize, kMaxPacketSize);
media_packet->data.SetSize(packet_length); media_packet->data.SetSize(packet_length);
uint8_t* data = media_packet->data.data(); uint8_t* data = media_packet->data.MutableData();
// Generate random values for the first 2 bytes. // Generate random values for the first 2 bytes.
data[0] = random.Rand<uint8_t>(); data[0] = random.Rand<uint8_t>();
data[1] = random.Rand<uint8_t>(); data[1] = random.Rand<uint8_t>();
@ -285,7 +285,7 @@ void RunTest(bool use_flexfec) {
media_packet_list.push_back(std::move(media_packet)); media_packet_list.push_back(std::move(media_packet));
seq_num++; seq_num++;
} }
media_packet_list.back()->data[1] |= 0x80; media_packet_list.back()->data.MutableData()[1] |= 0x80;
ASSERT_EQ(0, fec->EncodeFec(media_packet_list, protection_factor, ASSERT_EQ(0, fec->EncodeFec(media_packet_list, protection_factor,
num_imp_packets, kUseUnequalProtection, num_imp_packets, kUseUnequalProtection,
@ -312,8 +312,8 @@ void RunTest(bool use_flexfec) {
received_packet->pkt = new ForwardErrorCorrection::Packet(); received_packet->pkt = new ForwardErrorCorrection::Packet();
received_packet->pkt->data = media_packet->data; received_packet->pkt->data = media_packet->data;
received_packet->ssrc = media_ssrc; received_packet->ssrc = media_ssrc;
received_packet->seq_num = received_packet->seq_num = ByteReader<uint16_t>::ReadBigEndian(
ByteReader<uint16_t>::ReadBigEndian(&media_packet->data[2]); media_packet->data.data() + 2);
received_packet->is_fec = false; received_packet->is_fec = false;
received_packet_list.push_back(std::move(received_packet)); received_packet_list.push_back(std::move(received_packet));
} }

2
p2p/base/dtls_transport_unittest.cc
View File

@ -52,7 +52,7 @@ void SetRemoteFingerprintFromCert(
std::unique_ptr<rtc::SSLFingerprint> fingerprint = std::unique_ptr<rtc::SSLFingerprint> fingerprint =
rtc::SSLFingerprint::CreateFromCertificate(*cert); rtc::SSLFingerprint::CreateFromCertificate(*cert);
if (modify_digest) { if (modify_digest) {
++fingerprint->digest[0]; ++fingerprint->digest.MutableData()[0];
} }
// Even if digest is verified to be incorrect, should fail asynchrnously. // Even if digest is verified to be incorrect, should fail asynchrnously.
EXPECT_TRUE(transport->SetRemoteFingerprint( EXPECT_TRUE(transport->SetRemoteFingerprint(

6
pc/data_channel_unittest.cc
View File

@ -546,7 +546,7 @@ TEST_F(SctpDataChannelTest, ClosedWhenSendBufferFull) {
SetChannelReady(); SetChannelReady();
rtc::CopyOnWriteBuffer buffer(1024); rtc::CopyOnWriteBuffer buffer(1024);
memset(buffer.data(), 0, buffer.size()); memset(buffer.MutableData(), 0, buffer.size());
webrtc::DataBuffer packet(buffer, true); webrtc::DataBuffer packet(buffer, true);
provider_->set_send_blocked(true); provider_->set_send_blocked(true);
@ -581,7 +581,7 @@ TEST_F(SctpDataChannelTest, ClosedOnTransportError) {
TEST_F(SctpDataChannelTest, ClosedWhenReceivedBufferFull) { TEST_F(SctpDataChannelTest, ClosedWhenReceivedBufferFull) {
SetChannelReady(); SetChannelReady();
rtc::CopyOnWriteBuffer buffer(1024); rtc::CopyOnWriteBuffer buffer(1024);
memset(buffer.data(), 0, buffer.size()); memset(buffer.MutableData(), 0, buffer.size());
cricket::ReceiveDataParams params; cricket::ReceiveDataParams params;
params.ssrc = 0; params.ssrc = 0;
@ -623,7 +623,7 @@ TEST_F(SctpDataChannelTest, TransportDestroyedWhileDataBuffered) {
SetChannelReady(); SetChannelReady();
rtc::CopyOnWriteBuffer buffer(1024); rtc::CopyOnWriteBuffer buffer(1024);
memset(buffer.data(), 0, buffer.size()); memset(buffer.MutableData(), 0, buffer.size());
webrtc::DataBuffer packet(buffer, true); webrtc::DataBuffer packet(buffer, true);
// Send a packet while sending is blocked so it ends up buffered. // Send a packet while sending is blocked so it ends up buffered.

6
pc/sctp_utils_unittest.cc
View File

@ -178,15 +178,15 @@ TEST_F(SctpUtilsTest, WriteParseAckMessage) {
TEST_F(SctpUtilsTest, TestIsOpenMessage) { TEST_F(SctpUtilsTest, TestIsOpenMessage) {
rtc::CopyOnWriteBuffer open(1); rtc::CopyOnWriteBuffer open(1);
open[0] = 0x03; open.MutableData()[0] = 0x03;
EXPECT_TRUE(webrtc::IsOpenMessage(open)); EXPECT_TRUE(webrtc::IsOpenMessage(open));
rtc::CopyOnWriteBuffer openAck(1); rtc::CopyOnWriteBuffer openAck(1);
openAck[0] = 0x02; openAck.MutableData()[0] = 0x02;
EXPECT_FALSE(webrtc::IsOpenMessage(openAck)); EXPECT_FALSE(webrtc::IsOpenMessage(openAck));
rtc::CopyOnWriteBuffer invalid(1); rtc::CopyOnWriteBuffer invalid(1);
invalid[0] = 0x01; invalid.MutableData()[0] = 0x01;
EXPECT_FALSE(webrtc::IsOpenMessage(invalid)); EXPECT_FALSE(webrtc::IsOpenMessage(invalid));
rtc::CopyOnWriteBuffer empty; rtc::CopyOnWriteBuffer empty;

8
pc/srtp_transport.cc
View File

@ -128,7 +128,7 @@ bool SrtpTransport::SendRtpPacket(rtc::CopyOnWriteBuffer* packet,
rtc::PacketOptions updated_options = options; rtc::PacketOptions updated_options = options;
TRACE_EVENT0("webrtc", "SRTP Encode"); TRACE_EVENT0("webrtc", "SRTP Encode");
bool res; bool res;
uint8_t* data = packet->data(); uint8_t* data = packet->MutableData();
int len = rtc::checked_cast<int>(packet->size()); int len = rtc::checked_cast<int>(packet->size());
// If ENABLE_EXTERNAL_AUTH flag is on then packet authentication is not done // If ENABLE_EXTERNAL_AUTH flag is on then packet authentication is not done
// inside libsrtp for a RTP packet. A external HMAC module will be writing // inside libsrtp for a RTP packet. A external HMAC module will be writing
@ -185,7 +185,7 @@ bool SrtpTransport::SendRtcpPacket(rtc::CopyOnWriteBuffer* packet,
} }
TRACE_EVENT0("webrtc", "SRTP Encode"); TRACE_EVENT0("webrtc", "SRTP Encode");
uint8_t* data = packet->data(); uint8_t* data = packet->MutableData();
int len = rtc::checked_cast<int>(packet->size()); int len = rtc::checked_cast<int>(packet->size());
if (!ProtectRtcp(data, len, static_cast<int>(packet->capacity()), &len)) { if (!ProtectRtcp(data, len, static_cast<int>(packet->capacity()), &len)) {
int type = -1; int type = -1;
@ -208,7 +208,7 @@ void SrtpTransport::OnRtpPacketReceived(rtc::CopyOnWriteBuffer packet,
return; return;
} }
TRACE_EVENT0("webrtc", "SRTP Decode"); TRACE_EVENT0("webrtc", "SRTP Decode");
char* data = packet.data<char>(); char* data = packet.MutableData<char>();
int len = rtc::checked_cast<int>(packet.size()); int len = rtc::checked_cast<int>(packet.size());
if (!UnprotectRtp(data, len, &len)) { if (!UnprotectRtp(data, len, &len)) {
int seq_num = -1; int seq_num = -1;
@ -240,7 +240,7 @@ void SrtpTransport::OnRtcpPacketReceived(rtc::CopyOnWriteBuffer packet,
return; return;
} }
TRACE_EVENT0("webrtc", "SRTP Decode"); TRACE_EVENT0("webrtc", "SRTP Decode");
char* data = packet.data<char>(); char* data = packet.MutableData<char>();
int len = rtc::checked_cast<int>(packet.size()); int len = rtc::checked_cast<int>(packet.size());
if (!UnprotectRtcp(data, len, &len)) { if (!UnprotectRtcp(data, len, &len)) {
int type = -1; int type = -1;

4
test/network/network_emulation.h
View File

@ -593,12 +593,12 @@ class FakePacketRoute : public EmulatedNetworkReceiverInterface {
RTC_CHECK_GE(size, sizeof(int)); RTC_CHECK_GE(size, sizeof(int));
sent_.emplace(next_packet_id_, packet); sent_.emplace(next_packet_id_, packet);
rtc::CopyOnWriteBuffer buf(size); rtc::CopyOnWriteBuffer buf(size);
reinterpret_cast<int*>(buf.data())[0] = next_packet_id_++; reinterpret_cast<int*>(buf.MutableData())[0] = next_packet_id_++;
route_->from->SendPacket(send_addr_, recv_addr_, buf); route_->from->SendPacket(send_addr_, recv_addr_, buf);
} }
void OnPacketReceived(EmulatedIpPacket packet) override { void OnPacketReceived(EmulatedIpPacket packet) override {
int packet_id = reinterpret_cast<int*>(packet.data.data())[0]; int packet_id = reinterpret_cast<const int*>(packet.data.data())[0];
action_(std::move(sent_[packet_id]), packet.arrival_time); action_(std::move(sent_[packet_id]), packet.arrival_time);
sent_.erase(packet_id); sent_.erase(packet_id);
} }

2
test/network/traffic_route.cc
View File

@ -88,7 +88,7 @@ void TrafficRoute::SendPacket(size_t packet_size) {
void TrafficRoute::SendPacket(size_t packet_size, uint16_t dest_port) { void TrafficRoute::SendPacket(size_t packet_size, uint16_t dest_port) {
rtc::CopyOnWriteBuffer data(packet_size); rtc::CopyOnWriteBuffer data(packet_size);
std::fill_n(data.data<uint8_t>(), data.size(), 0); std::fill_n(data.MutableData(), data.size(), 0);
receiver_->OnPacketReceived(EmulatedIpPacket( receiver_->OnPacketReceived(EmulatedIpPacket(
/*from=*/rtc::SocketAddress(), /*from=*/rtc::SocketAddress(),
rtc::SocketAddress(endpoint_->GetPeerLocalAddress(), dest_port), data, rtc::SocketAddress(endpoint_->GetPeerLocalAddress(), dest_port), data,

4
test/peer_scenario/tests/unsignaled_stream_test.cc
View File

@ -114,8 +114,8 @@ TEST(UnsignaledStreamTest, ReplacesUnsignaledStreamOnCompletedSignaling) {
first_ssrc && first_ssrc &&
!got_unsignaled_packet) { !got_unsignaled_packet) {
rtc::CopyOnWriteBuffer updated_buffer = packet.data; rtc::CopyOnWriteBuffer updated_buffer = packet.data;
ByteWriter<uint32_t>::WriteBigEndian(&updated_buffer.data()[8], ByteWriter<uint32_t>::WriteBigEndian(
second_ssrc); updated_buffer.MutableData() + 8, second_ssrc);
EmulatedIpPacket updated_packet( EmulatedIpPacket updated_packet(
packet.from, packet.to, updated_buffer, packet.arrival_time); packet.from, packet.to, updated_buffer, packet.arrival_time);
send_node->OnPacketReceived(std::move(updated_packet)); send_node->OnPacketReceived(std::move(updated_packet));