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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_PROTOCOL_STREAM_PACKET_PROCESSOR_H_
#define REMOTING_PROTOCOL_STREAM_PACKET_PROCESSOR_H_
#include <stdint.h>
#include "base/memory/scoped_refptr.h"
#include "third_party/webrtc/rtc_base/async_packet_socket.h"
namespace net {
class IOBufferWithSize;
} // namespace net
namespace remoting::protocol {
// Helper class to process packets from and to the StreamPacketSocket.
class StreamPacketProcessor {
public:
virtual ~StreamPacketProcessor() = default;
// Packs data into packet to be sent over the packet socket. Returns nullptr
// if the data is malformed.
virtual scoped_refptr<net::IOBufferWithSize> Pack(const uint8_t* data,
size_t data_size) const = 0;
// Unpacks a packet from the packet socket's buffer. |bytes_consumed| should
// be updated with number of bytes it consumed from |data|. If the packet
// can't be unpacked (generally because the packet is not fully received),
// nullptr will be returned and |bytes_consumed| will be set to 0.
virtual scoped_refptr<net::IOBufferWithSize> Unpack(
const uint8_t* data,
size_t data_size,
size_t* bytes_consumed) const = 0;
// Applies WebRTC packet options on a packet that has already been packed.
virtual void ApplyPacketOptions(
uint8_t* data,
size_t data_size,
const webrtc::PacketTimeUpdateParams& packet_time_params) const = 0;
};
} // namespace remoting::protocol
#endif // REMOTING_PROTOCOL_STREAM_PACKET_PROCESSOR_H_
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