mirror of
https://github.com/mpromonet/v4l2rtspserver
synced 2024-11-11 19:10:40 +00:00
77 lines
3.0 KiB
C++
77 lines
3.0 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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** MJPEGVideoSource.h
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**
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** V4L2 RTSP streamer
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**
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** MJPEG Source for RTSP server
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**
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** -------------------------------------------------------------------------*/
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#pragma once
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#include "logger.h"
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#include "JPEGVideoSource.hh"
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class MJPEGVideoSource : public JPEGVideoSource
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{
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public:
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static MJPEGVideoSource* createNew (UsageEnvironment& env, FramedSource* source)
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{
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return new MJPEGVideoSource(env,source);
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}
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virtual void doGetNextFrame()
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{
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if (m_inputSource) {
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m_inputSource->getNextFrame(fTo, fMaxSize, afterGettingFrameSub, this, FramedSource::handleClosure, this);
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}
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}
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virtual void doStopGettingFrames()
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{
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FramedSource::doStopGettingFrames();
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if (m_inputSource) {
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m_inputSource->stopGettingFrames();
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}
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}
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static void afterGettingFrameSub(void* clientData, unsigned frameSize,unsigned numTruncatedBytes,struct timeval presentationTime,unsigned durationInMicroseconds)
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{
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MJPEGVideoSource* source = (MJPEGVideoSource*)clientData;
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source->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime, durationInMicroseconds);
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}
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void afterGettingFrame(unsigned frameSize,unsigned numTruncatedBytes,struct timeval presentationTime,unsigned durationInMicroseconds);
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virtual u_int8_t type() { return m_restartInterval ? m_type | 0x40 : m_type; };
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virtual u_int8_t qFactor() { return 128; };
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virtual u_int8_t width() { return m_width; };
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virtual u_int8_t height() { return m_height; };
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virtual u_int16_t restartInterval() { return m_restartInterval; }
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u_int8_t const* quantizationTables( u_int8_t& precision, u_int16_t& length );
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protected:
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MJPEGVideoSource(UsageEnvironment& env, FramedSource* source) : JPEGVideoSource(env),
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m_inputSource(source),
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m_width(0), m_height(0), m_qTableSize(0), m_precision(0),
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m_type(0), m_restartInterval(0)
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{
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memset(&m_qTable,0,sizeof(m_qTable));
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}
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virtual ~MJPEGVideoSource()
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{
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Medium::close(m_inputSource);
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}
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protected:
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FramedSource* m_inputSource;
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u_int8_t m_width;
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u_int8_t m_height;
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u_int8_t m_qTable[128*2];
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unsigned int m_qTableSize;
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unsigned int m_precision;
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u_int8_t m_type;
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u_int16_t m_restartInterval;
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};
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