61a208b1b8
It allows the decoder to split the input up into usable chunks before they are put into NetEq's PacketBuffer. Eventually, all packet splitting will move into ParsePayload. There's currently a base implementation of ParsePayload. It will generate a single Frame that calls the underlying AudioDecoder for getting Duration() and to Decode. BUG=webrtc:5805 BUG=chromium:428099 Review-Url: https://codereview.webrtc.org/2326953003 Cr-Commit-Position: refs/heads/master@{#14300}
74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
/*
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* Copyright (c) 2012 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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#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_PACKET_H_
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#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_PACKET_H_
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#include <list>
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#include <memory>
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#include "webrtc/base/buffer.h"
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#include "webrtc/modules/audio_coding/codecs/audio_decoder.h"
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#include "webrtc/modules/audio_coding/neteq/tick_timer.h"
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#include "webrtc/modules/include/module_common_types.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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// Struct for holding RTP packets.
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struct Packet {
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RTPHeader header;
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// Datagram excluding RTP header and header extension.
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rtc::Buffer payload;
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bool primary = true; // Primary, i.e., not redundant payload.
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std::unique_ptr<TickTimer::Stopwatch> waiting_time;
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std::unique_ptr<AudioDecoder::EncodedAudioFrame> frame;
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Packet();
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~Packet();
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// Comparison operators. Establish a packet ordering based on (1) timestamp,
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// (2) sequence number and (3) redundancy.
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// Timestamp and sequence numbers are compared taking wrap-around into
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// account. For two packets with the same sequence number and timestamp a
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// primary payload is considered "smaller" than a secondary.
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bool operator==(const Packet& rhs) const {
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return (this->header.timestamp == rhs.header.timestamp &&
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this->header.sequenceNumber == rhs.header.sequenceNumber &&
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this->primary == rhs.primary);
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}
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bool operator!=(const Packet& rhs) const { return !operator==(rhs); }
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bool operator<(const Packet& rhs) const {
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if (this->header.timestamp == rhs.header.timestamp) {
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if (this->header.sequenceNumber == rhs.header.sequenceNumber) {
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// Timestamp and sequence numbers are identical - deem the left
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// hand side to be "smaller" (i.e., "earlier") if it is primary, and
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// right hand side is not.
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return (this->primary && !rhs.primary);
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}
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return (static_cast<uint16_t>(rhs.header.sequenceNumber
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- this->header.sequenceNumber) < 0xFFFF / 2);
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}
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return (static_cast<uint32_t>(rhs.header.timestamp
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- this->header.timestamp) < 0xFFFFFFFF / 2);
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}
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bool operator>(const Packet& rhs) const { return rhs.operator<(*this); }
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bool operator<=(const Packet& rhs) const { return !operator>(rhs); }
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bool operator>=(const Packet& rhs) const { return !operator<(rhs); }
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bool empty() const { return !frame && payload.empty(); }
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};
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// A list of packets.
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typedef std::list<Packet*> PacketList;
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_PACKET_H_
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