99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016 xiongziliang <771730766@qq.com>
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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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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "Common/config.h"
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#include "RtpMakerAAC.h"
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#include "Util/mini.h"
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#include "Network/sockutil.h"
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using namespace toolkit;
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namespace mediakit{
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void RtpMaker_AAC::makeRtp(const char *pcData, int iLen, uint32_t uiStamp) {
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GET_CONFIG_AND_REGISTER(uint32_t,cycleMS,Rtp::kCycleMS);
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uiStamp %= cycleMS;
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char *ptr = (char *) pcData;
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int iSize = iLen;
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while (iSize > 0 ) {
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if (iSize <= _iMtuSize - 20) {
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_aucSectionBuf[0] = 0;
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_aucSectionBuf[1] = 16;
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_aucSectionBuf[2] = iLen >> 5;
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_aucSectionBuf[3] = (iLen & 0x1F) << 3;
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memcpy(_aucSectionBuf + 4, ptr, iSize);
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makeAACRtp(_aucSectionBuf, iSize + 4, true, uiStamp);
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break;
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}
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_aucSectionBuf[0] = 0;
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_aucSectionBuf[1] = 16;
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_aucSectionBuf[2] = (iLen) >> 5;
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_aucSectionBuf[3] = (iLen & 0x1F) << 3;
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memcpy(_aucSectionBuf + 4, ptr, _iMtuSize - 20);
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makeAACRtp(_aucSectionBuf, _iMtuSize - 16, false, uiStamp);
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ptr += (_iMtuSize - 20);
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iSize -= (_iMtuSize - 20);
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}
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}
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inline void RtpMaker_AAC::makeAACRtp(const void *pData, unsigned int uiLen, bool bMark, uint32_t uiStamp) {
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uint16_t u16RtpLen = uiLen + 12;
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_ui32TimeStamp = (_ui32SampleRate / 1000) * uiStamp;
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uint32_t ts = htonl(_ui32TimeStamp);
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uint16_t sq = htons(_ui16Sequence);
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uint32_t sc = htonl(_ui32Ssrc);
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auto pRtppkt = obtainPkt();
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auto &rtppkt = *(pRtppkt.get());
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unsigned char *pucRtp = rtppkt.payload;
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pucRtp[0] = '$';
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pucRtp[1] = _ui8Interleaved;
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pucRtp[2] = u16RtpLen >> 8;
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pucRtp[3] = u16RtpLen & 0x00FF;
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pucRtp[4] = 0x80;
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pucRtp[5] = (bMark << 7) | _ui8PlayloadType;
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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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//playload
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memcpy(&pucRtp[16], pData, uiLen);
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rtppkt.PT = _ui8PlayloadType;
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rtppkt.interleaved = _ui8Interleaved;
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rtppkt.mark = bMark;
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rtppkt.length = uiLen + 16;
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rtppkt.sequence = _ui16Sequence;
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rtppkt.timeStamp = _ui32TimeStamp;
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rtppkt.ssrc = _ui32Ssrc;
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rtppkt.type = TrackAudio;
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rtppkt.offset = 16;
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onMakeRtp(pRtppkt, false);
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_ui16Sequence++;
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}
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}//namespace mediakit
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