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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cast/net/udp_packet_pipe.h"
#include <cstring>
#include "base/bind.h"
#include "base/callback.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
namespace media {
namespace cast {
// UdpPacketPipeReader
UdpPacketPipeReader::UdpPacketPipeReader(
mojo::ScopedDataPipeConsumerHandle consumer_handle)
: data_pipe_reader_(std::move(consumer_handle)) {
DCHECK(data_pipe_reader_.IsPipeValid());
}
UdpPacketPipeReader::~UdpPacketPipeReader() {}
void UdpPacketPipeReader::Read(ReadCB cb) {
DCHECK(!cb.is_null());
data_pipe_reader_.Read(reinterpret_cast<uint8_t*>(¤t_packet_size_),
sizeof(uint16_t),
base::BindOnce(&UdpPacketPipeReader::ReadPacketPayload,
base::Unretained(this), std::move(cb)));
}
void UdpPacketPipeReader::ReadPacketPayload(ReadCB cb, bool success) {
if (!success) {
OnPacketRead(nullptr, std::move(cb), false);
return;
}
auto packet = std::make_unique<Packet>(current_packet_size_);
uint8_t* packet_data = packet->data();
data_pipe_reader_.Read(
packet_data, current_packet_size_,
base::BindOnce(&UdpPacketPipeReader::OnPacketRead, base::Unretained(this),
std::move(packet), std::move(cb)));
}
void UdpPacketPipeReader::OnPacketRead(std::unique_ptr<Packet> packet,
ReadCB cb,
bool success) {
DCHECK(!cb.is_null());
if (!success) {
VLOG(1) << "Failed when reading the packet.";
// The data pipe should have been closed.
}
std::move(cb).Run(std::move(packet));
}
// UdpPacketPipeWriter
UdpPacketPipeWriter::UdpPacketPipeWriter(
mojo::ScopedDataPipeProducerHandle producer_handle)
: data_pipe_writer_(std::move(producer_handle)) {
DCHECK(data_pipe_writer_.IsPipeValid());
}
UdpPacketPipeWriter::~UdpPacketPipeWriter() {}
void UdpPacketPipeWriter::Write(PacketRef packet, base::OnceClosure done_cb) {
DCHECK(done_cb);
current_packet_size_ = packet->data.size();
data_pipe_writer_.Write(
reinterpret_cast<uint8_t*>(¤t_packet_size_), sizeof(uint16_t),
base::BindOnce(&UdpPacketPipeWriter::WritePacketPayload,
base::Unretained(this), std::move(packet),
std::move(done_cb)));
}
void UdpPacketPipeWriter::WritePacketPayload(PacketRef packet,
base::OnceClosure done_cb,
bool success) {
if (!success) {
OnPacketWritten(PacketRef(), std::move(done_cb), false);
return;
}
const uint8_t* buffer = packet->data.data();
const int buffer_size = packet->data.size();
data_pipe_writer_.Write(
buffer, buffer_size,
base::BindOnce(&UdpPacketPipeWriter::OnPacketWritten,
base::Unretained(this), std::move(packet),
std::move(done_cb)));
}
void UdpPacketPipeWriter::OnPacketWritten(PacketRef packet,
base::OnceClosure done_cb,
bool success) {
DCHECK(done_cb);
if (!success) {
VLOG(1) << "Failed to write the packet.";
// The data pipe should have been closed.
}
std::move(done_cb).Run();
}
} // namespace cast
} // namespace media
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