mirror of
https://github.com/mii443/libdatachannel.git
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68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/**
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* Copyright (c) 2020 Filip Klembara (in2core)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef RTC_H264_RTP_PACKETIZER_H
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#define RTC_H264_RTP_PACKETIZER_H
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#if RTC_ENABLE_MEDIA
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#include "nalunit.hpp"
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#include "rtppacketizer.hpp"
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#include "mediahandlerrootelement.hpp"
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namespace rtc {
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/// RTP packetization of h264 payload
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class RTC_CPP_EXPORT H264RtpPacketizer final : public RtpPacketizer, public MediaHandlerRootElement {
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shared_ptr<NalUnits> splitMessage(binary_ptr message);
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const uint16_t maximumFragmentSize;
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public:
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/// Default clock rate for H264 in RTP
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static const auto defaultClockRate = 90 * 1000;
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/// Nalunit separator
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enum class Separator {
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LongStartSequence, // 0x00, 0x00, 0x00, 0x01
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ShortStartSequence, // 0x00, 0x00, 0x01
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StartSequence, // LongStartSequence or ShortStartSequence
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Length // first 4 bytes is nal unit length
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};
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H264RtpPacketizer(H264RtpPacketizer::Separator separator, shared_ptr<RtpPacketizationConfig> rtpConfig,
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uint16_t maximumFragmentSize = NalUnits::defaultMaximumFragmentSize);
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/// Constructs h264 payload 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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/// @param maximumFragmentSize maximum size of one NALU fragment
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H264RtpPacketizer(shared_ptr<RtpPacketizationConfig> rtpConfig,
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uint16_t maximumFragmentSize = NalUnits::defaultMaximumFragmentSize);
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ChainedOutgoingProduct processOutgoingBinaryMessage(ChainedMessagesProduct messages, message_ptr control) override;
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private:
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const Separator separator;
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};
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} // namespace rtc
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#endif /* RTC_ENABLE_MEDIA */
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#endif /* RTC_H264_RTP_PACKETIZER_H */
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