2018-10-31 09:36:12 +08:00
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/*
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2020-04-04 20:30:09 +08:00
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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2018-10-31 09:36:12 +08:00
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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2020-04-04 20:30:09 +08:00
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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2018-10-31 09:36:12 +08:00
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*/
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#include "RtpCodec.h"
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namespace mediakit{
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RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, unsigned int len, bool mark, uint32_t uiStamp) {
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uint16_t ui16RtpLen = len + 12;
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uint32_t ts = htonl((_ui32SampleRate / 1000) * uiStamp);
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uint16_t sq = htons(_ui16Sequence);
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uint32_t sc = htonl(_ui32Ssrc);
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auto rtppkt = ResourcePoolHelper<RtpPacket>::obtainObj();
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2019-06-24 16:07:44 +08:00
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rtppkt->setCapacity(len + 16);
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rtppkt->setSize(len + 16);
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unsigned char *pucRtp = (unsigned char *)rtppkt->data();
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2018-10-31 09:36:12 +08:00
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pucRtp[0] = '$';
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pucRtp[1] = _ui8Interleaved;
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pucRtp[2] = ui16RtpLen >> 8;
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pucRtp[3] = ui16RtpLen & 0x00FF;
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pucRtp[4] = 0x80;
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2020-05-25 13:51:00 +08:00
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pucRtp[5] = (mark << 7) | _ui8PayloadType;
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2018-10-31 09:36:12 +08:00
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memcpy(&pucRtp[6], &sq, 2);
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memcpy(&pucRtp[8], &ts, 4);
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//ssrc
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memcpy(&pucRtp[12], &sc, 4);
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2019-09-06 15:16:22 +08:00
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if(data){
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2020-05-25 13:51:00 +08:00
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//payload
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2019-09-06 15:16:22 +08:00
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memcpy(&pucRtp[16], data, len);
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}
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2018-10-31 09:36:12 +08:00
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2020-05-25 13:51:00 +08:00
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rtppkt->PT = _ui8PayloadType;
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2018-10-31 09:36:12 +08:00
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rtppkt->interleaved = _ui8Interleaved;
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rtppkt->mark = mark;
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rtppkt->sequence = _ui16Sequence;
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rtppkt->timeStamp = uiStamp;
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rtppkt->ssrc = _ui32Ssrc;
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rtppkt->type = type;
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rtppkt->offset = 16;
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_ui16Sequence++;
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_ui32TimeStamp = uiStamp;
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return rtppkt;
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}
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}//namespace mediakit
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