72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
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//
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// Created by Grishka on 19.03.2018.
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//
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#ifndef TGVOIP_PACKETREASSEMBLER_H
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#define TGVOIP_PACKETREASSEMBLER_H
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#include "logging.h"
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#include "Buffers.h"
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#include <functional>
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#include <memory>
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#include <vector>
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namespace tgvoip
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{
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class PacketReassembler
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{
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public:
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PacketReassembler();
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virtual ~PacketReassembler();
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void Reset();
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void AddFragment(Buffer pkt, unsigned int fragmentIndex, unsigned int fragmentCount,
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std::uint32_t pts, std::uint8_t fseq, bool keyframe, std::uint16_t rotation);
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void AddFEC(Buffer data, std::uint8_t fseq, unsigned int frameCount, unsigned int fecScheme);
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using CallbackType = std::function<void(Buffer packet, std::uint32_t pts, bool keyframe, std::uint16_t rotation)>;
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void SetCallback(CallbackType m_callback);
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private:
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struct Packet
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{
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std::uint32_t seq;
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std::uint32_t timestamp;
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std::uint32_t partCount;
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std::uint32_t receivedPartCount;
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bool isKeyframe;
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std::uint16_t rotation;
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std::vector<Buffer> parts;
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Packet(std::uint32_t seq, std::uint32_t timestamp, std::uint32_t partCount,
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std::uint32_t receivedPartCount, bool keyframe, std::uint16_t rotation);
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void AddFragment(Buffer pkt, std::uint32_t fragmentIndex);
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Buffer Reassemble();
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};
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struct FecPacket
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{
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std::uint32_t seq;
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std::uint32_t prevFrameCount;
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std::uint32_t fecScheme;
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Buffer data;
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};
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CallbackType m_callback;
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std::vector<std::unique_ptr<Packet>> m_packets;
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std::vector<std::unique_ptr<Packet>> m_oldPackets; // for FEC
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std::vector<FecPacket> m_fecPackets;
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std::uint32_t m_maxTimestamp = 0;
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std::uint32_t m_lastFrameSeq = 0;
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bool m_waitingForFEC = false;
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bool TryDecodeFEC(FecPacket& fec);
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};
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} // namespace tgvoip
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#endif // TGVOIP_PACKETREASSEMBLER_H
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