blob: 7119c80237969d9314edba23ed2d113dd27df860 [file] [log] [blame]
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <list>
#include <memory>
#include "webrtc/base/buffer.h"
#include "webrtc/modules/audio_coding/neteq/tick_timer.h"
#include "webrtc/modules/include/module_common_types.h"
#include "webrtc/typedefs.h"
namespace webrtc {
// Struct for holding RTP packets.
struct Packet {
RTPHeader header;
// Datagram excluding RTP header and header extension.
rtc::Buffer payload;
bool primary = true; // Primary, i.e., not redundant payload.
std::unique_ptr<TickTimer::Stopwatch> waiting_time;
// Comparison operators. Establish a packet ordering based on (1) timestamp,
// (2) sequence number and (3) redundancy.
// Timestamp and sequence numbers are compared taking wrap-around into
// account. For two packets with the same sequence number and timestamp a
// primary payload is considered "smaller" than a secondary.
bool operator==(const Packet& rhs) const {
return (this->header.timestamp == rhs.header.timestamp &&
this->header.sequenceNumber == rhs.header.sequenceNumber &&
this->primary == rhs.primary);
bool operator!=(const Packet& rhs) const { return !operator==(rhs); }
bool operator<(const Packet& rhs) const {
if (this->header.timestamp == rhs.header.timestamp) {
if (this->header.sequenceNumber == rhs.header.sequenceNumber) {
// Timestamp and sequence numbers are identical - deem the left
// hand side to be "smaller" (i.e., "earlier") if it is primary, and
// right hand side is not.
return (this->primary && !rhs.primary);
return (static_cast<uint16_t>(rhs.header.sequenceNumber
- this->header.sequenceNumber) < 0xFFFF / 2);
return (static_cast<uint32_t>(rhs.header.timestamp
- this->header.timestamp) < 0xFFFFFFFF / 2);
bool operator>(const Packet& rhs) const { return rhs.operator<(*this); }
bool operator<=(const Packet& rhs) const { return !operator>(rhs); }
bool operator>=(const Packet& rhs) const { return !operator<(rhs); }
// A list of packets.
typedef std::list<Packet*> PacketList;
} // namespace webrtc