blob: 9153733fb91091a470c03ab9806764fa757b194f [file] [log] [blame]
* Copyright (c) 2015 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 <vector>
#include "modules/rtp_rtcp/source/rtcp_packet/rtpfb.h"
namespace webrtc {
namespace rtcp {
class CommonHeader;
class Nack : public Rtpfb {
static constexpr uint8_t kFeedbackMessageType = 1;
Nack(const Nack&);
~Nack() override;
// Parse assumes header is already parsed and validated.
bool Parse(const CommonHeader& packet);
void SetPacketIds(const uint16_t* nack_list, size_t length);
void SetPacketIds(std::vector<uint16_t> nack_list);
const std::vector<uint16_t>& packet_ids() const { return packet_ids_; }
size_t BlockLength() const override;
bool Create(uint8_t* packet,
size_t* index,
size_t max_length,
PacketReadyCallback callback) const override;
static constexpr size_t kNackItemLength = 4;
struct PackedNack {
uint16_t first_pid;
uint16_t bitmask;
void Pack(); // Fills packed_ using packed_ids_. (used in SetPacketIds).
void Unpack(); // Fills packet_ids_ using packed_. (used in Parse).
std::vector<PackedNack> packed_;
std::vector<uint16_t> packet_ids_;
} // namespace rtcp
} // namespace webrtc