2d821c3cbc
This CL allows for FEC protection of packets with VideoTimingExtension by zero-ing out data, which is changed after FEC protection is generated (i.e in the pacer or by the SFU). Actual FEC protection of these packets would be enabled later, when all modern receivers have this change. Bug: webrtc:10750 Change-Id: If4785392204d68cb8527629727b5c062f9fb6600 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/143760 Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28396}
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/*
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* Copyright (c) 2013 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 MODULES_RTP_RTCP_INCLUDE_ULPFEC_RECEIVER_H_
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#define MODULES_RTP_RTCP_INCLUDE_ULPFEC_RECEIVER_H_
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#include <memory>
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#include "api/array_view.h"
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#include "api/rtp_parameters.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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namespace webrtc {
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struct FecPacketCounter {
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FecPacketCounter()
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: num_packets(0),
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num_fec_packets(0),
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num_recovered_packets(0),
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first_packet_time_ms(-1) {}
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size_t num_packets; // Number of received packets.
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size_t num_fec_packets; // Number of received FEC packets.
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size_t num_recovered_packets; // Number of recovered media packets using FEC.
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int64_t first_packet_time_ms; // Time when first packet is received.
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};
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class UlpfecReceiver {
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public:
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static std::unique_ptr<UlpfecReceiver> Create(
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uint32_t ssrc,
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RecoveredPacketReceiver* callback,
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rtc::ArrayView<const RtpExtension> extensions);
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virtual ~UlpfecReceiver() {}
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// Takes a RED packet, strips the RED header, and adds the resulting
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// "virtual" RTP packet(s) into the internal buffer.
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//
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// TODO(brandtr): Set |ulpfec_payload_type| during constructor call,
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// rather than as a parameter here.
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virtual int32_t AddReceivedRedPacket(const RTPHeader& rtp_header,
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const uint8_t* incoming_rtp_packet,
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size_t packet_length,
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uint8_t ulpfec_payload_type) = 0;
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// Sends the received packets to the FEC and returns all packets
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// (both original media and recovered) through the callback.
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virtual int32_t ProcessReceivedFec() = 0;
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// Returns a counter describing the added and recovered packets.
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virtual FecPacketCounter GetPacketCounter() const = 0;
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};
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} // namespace webrtc
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#endif // MODULES_RTP_RTCP_INCLUDE_ULPFEC_RECEIVER_H_
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