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rtp打包减少一次内存拷贝

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xiongziliang
2019-09-06 15:16:22 +08:00
parent ca8e295ada
commit 39e3c89848
19 changed files with 37 additions and 16 deletions
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19
src/Extension/H264Rtp.cpp
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@@ -265,11 +265,22 @@ void H264RtpEncoder::inputFrame(const Frame::Ptr &frame) {
} else {
s_e_r_type = s_e_r_Mid + naluType;
}
memcpy(_aucSectionBuf, &f_nri_type, 1);
memcpy(_aucSectionBuf + 1, &s_e_r_type, 1);
memcpy(_aucSectionBuf + 2, (unsigned char *) pcData + nOffset, iSize);
{
//传入nullptr先不做payload的内存拷贝
auto rtp = makeRtp(getTrackType(), nullptr, iSize + 2, mark, uiStamp);
//rtp payload 负载部分
uint8_t *payload = (uint8_t*)rtp->data() + rtp->offset;
//FU-A 第1个字节
memcpy(payload, &f_nri_type, 1);
//FU-A 第2个字节
memcpy(payload + 1, &s_e_r_type, 1);
//H264 数据
memcpy(payload + 2, (unsigned char *) pcData + nOffset, iSize);
//输入到rtp环形缓存
RtpCodec::inputRtp(rtp,bFirst && naluType == H264Frame::NAL_IDR);
}
nOffset += iSize;
makeH264Rtp(naluType,_aucSectionBuf, iSize + 2, mark,bFirst, uiStamp);
bFirst = false;
}
} else {