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提炼rtp打包代码

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xiongziliang
2018-10-31 09:36:12 +08:00
parent addf90b88a
commit 53ba766c2a
6 changed files with 80 additions and 108 deletions
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68
src/RtspMuxer/RtpCodec.cpp Normal file
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/*
* MIT License
*
* Copyright (c) 2016 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "RtpCodec.h"
namespace mediakit{
RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, unsigned int len, bool mark, uint32_t uiStamp) {
uint16_t ui16RtpLen = len + 12;
uint32_t ts = htonl((_ui32SampleRate / 1000) * uiStamp);
uint16_t sq = htons(_ui16Sequence);
uint32_t sc = htonl(_ui32Ssrc);
auto rtppkt = ResourcePoolHelper<RtpPacket>::obtainObj();
unsigned char *pucRtp = rtppkt->payload;
pucRtp[0] = '$';
pucRtp[1] = _ui8Interleaved;
pucRtp[2] = ui16RtpLen >> 8;
pucRtp[3] = ui16RtpLen & 0x00FF;
pucRtp[4] = 0x80;
pucRtp[5] = (mark << 7) | _ui8PlayloadType;
memcpy(&pucRtp[6], &sq, 2);
memcpy(&pucRtp[8], &ts, 4);
//ssrc
memcpy(&pucRtp[12], &sc, 4);
//playload
memcpy(&pucRtp[16], data, len);
rtppkt->PT = _ui8PlayloadType;
rtppkt->interleaved = _ui8Interleaved;
rtppkt->mark = mark;
rtppkt->length = len + 16;
rtppkt->sequence = _ui16Sequence;
rtppkt->timeStamp = uiStamp;
rtppkt->ssrc = _ui32Ssrc;
rtppkt->type = type;
rtppkt->offset = 16;
_ui16Sequence++;
_ui32TimeStamp = uiStamp;
return rtppkt;
}
}//namespace mediakit