89 lines
2.8 KiB
C++
89 lines
2.8 KiB
C++
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/**
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* Copyright (c) 2020 Filip Klembara (in2core)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#ifndef RTC_RTP_PACKETIZER_H
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#define RTC_RTP_PACKETIZER_H
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#if RTC_ENABLE_MEDIA
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#include "mediahandler.hpp"
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#include "message.hpp"
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#include "rtppacketizationconfig.hpp"
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namespace rtc {
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/// RTP packetizer
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class RTC_CPP_EXPORT RtpPacketizer : public MediaHandler {
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public:
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/// Constructs packetizer with given RTP configuration
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/// @note RTP configuration is used in packetization process which may change some configuration
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/// properties such as sequence number.
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/// @param rtpConfig RTP configuration
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RtpPacketizer(shared_ptr<RtpPacketizationConfig> rtpConfig);
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virtual ~RtpPacketizer();
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virtual void media(const Description::Media &desc) override;
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virtual void outgoing(message_vector &messages, const message_callback &send) override;
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/// RTP packetization config
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const shared_ptr<RtpPacketizationConfig> rtpConfig;
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protected:
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/// Creates RTP packet for given payload
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/// @note This function increase sequence number after packetization.
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/// @param payload RTP payload
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/// @param setMark Set marker flag in RTP packet if true
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virtual message_ptr packetize(shared_ptr<binary> payload, bool mark);
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private:
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static const auto RtpHeaderSize = 12;
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static const auto RtpExtHeaderCvoSize = 8;
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};
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// Generic audio RTP packetizer
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template <uint32_t DEFAULT_CLOCK_RATE>
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class RTC_CPP_EXPORT AudioRtpPacketizer final : public RtpPacketizer {
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public:
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inline static const uint32_t DefaultClockRate = DEFAULT_CLOCK_RATE;
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inline static const uint32_t defaultClockRate [[deprecated("Use DefaultClockRate")]] =
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DEFAULT_CLOCK_RATE; // for backward compatibility
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AudioRtpPacketizer(shared_ptr<RtpPacketizationConfig> rtpConfig)
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: RtpPacketizer(std::move(rtpConfig)) {}
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};
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// Audio RTP packetizers
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using OpusRtpPacketizer = AudioRtpPacketizer<48000>;
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using AACRtpPacketizer = AudioRtpPacketizer<48000>;
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// Dummy wrapper for backward compatibility, do not use
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class RTC_CPP_EXPORT PacketizationHandler final : public MediaHandler {
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public:
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PacketizationHandler(shared_ptr<RtpPacketizer> packetizer)
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: mPacketizer(std::move(packetizer)) {}
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inline void outgoing(message_vector &messages, const message_callback &send) {
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return mPacketizer->outgoing(messages, send);
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}
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private:
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shared_ptr<RtpPacketizer> mPacketizer;
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};
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// Audio packetization handlers for backward compatibility, do not use
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using OpusPacketizationHandler [[deprecated("Add OpusRtpPacketizer directly")]] =
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PacketizationHandler;
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using AACPacketizationHandler [[deprecated("Add AACRtpPacketizer directly")]] =
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PacketizationHandler;
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} // namespace rtc
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#endif /* RTC_ENABLE_MEDIA */
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#endif /* RTC_RTP_PACKETIZER_H */
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