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90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/* ---------------------------------------------------------------------------
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** This software is in the public domain, furnished "as is", without technical
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** support, and with no warranty, express or implied, as to its usefulness for
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** any purpose.
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**
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** H264_V4l2DeviceSource.cpp
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**
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** H264 V4L2 Live555 source
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**
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** -------------------------------------------------------------------------*/
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#include <sstream>
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// live555
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#include <Base64.hh>
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// project
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#include "logger.h"
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#include "H264_V4l2DeviceSource.h"
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// ---------------------------------
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// H264 V4L2 FramedSource
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// ---------------------------------
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// split packet in frames
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std::list< std::pair<unsigned char*,size_t> > H264_V4L2DeviceSource::splitFrames(unsigned char* frame, unsigned frameSize)
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{
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std::list< std::pair<unsigned char*,size_t> > frameList;
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size_t bufSize = frameSize;
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size_t size = 0;
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int frameType = 0;
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unsigned char* buffer = this->extractFrame(frame, bufSize, size, frameType);
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while (buffer != NULL)
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{
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switch (frameType&0x1F)
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{
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case 7: LOG(INFO) << "SPS size:" << size << " bufSize:" << bufSize; m_sps.assign((char*)buffer,size); break;
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case 8: LOG(INFO) << "PPS size:" << size << " bufSize:" << bufSize; m_pps.assign((char*)buffer,size); break;
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case 5: LOG(INFO) << "IDR size:" << size << " bufSize:" << bufSize;
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if (m_repeatConfig && !m_sps.empty() && !m_pps.empty())
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{
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frameList.push_back(std::pair<unsigned char*,size_t>((unsigned char*)m_sps.c_str(), m_sps.size()));
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frameList.push_back(std::pair<unsigned char*,size_t>((unsigned char*)m_pps.c_str(), m_pps.size()));
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}
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break;
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default:
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break;
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}
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if (!m_sps.empty() && !m_pps.empty())
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{
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u_int32_t profile_level_id = 0;
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if (m_sps.size() >= 4) profile_level_id = (((unsigned char)m_sps[1])<<16)|(((unsigned char)m_sps[2])<<8)|((unsigned char)m_sps[3]);
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char* sps_base64 = base64Encode(m_sps.c_str(), m_sps.size());
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char* pps_base64 = base64Encode(m_pps.c_str(), m_pps.size());
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std::ostringstream os;
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os << "profile-level-id=" << std::hex << std::setw(6) << std::setfill('0') << profile_level_id;
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os << ";sprop-parameter-sets=" << sps_base64 <<"," << pps_base64;
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m_auxLine.assign(os.str());
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delete [] sps_base64;
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delete [] pps_base64;
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}
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frameList.push_back(std::pair<unsigned char*,size_t>(buffer, size));
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buffer = this->extractFrame(&buffer[size], bufSize, size, frameType);
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}
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return frameList;
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}
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std::list< std::string > H264_V4L2DeviceSource::getInitFrames() {
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std::list< std::string > frameList;
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frameList.push_back(this->getFrameWithMarker(m_sps));
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frameList.push_back(this->getFrameWithMarker(m_pps));
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return frameList;
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}
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bool H264_V4L2DeviceSource::isKeyFrame(const char* buffer, int size) {
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bool res = false;
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if (size > 4)
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{
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int frameType = buffer[4]&0x1F;
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res = (frameType == 5);
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}
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return res;
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} |