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v4l2rtspserver/inc/BaseServerMediaSubsession.h

124 lines
4.4 KiB
C++

/* ---------------------------------------------------------------------------
** This software is in the public domain, furnished "as is", without technical
** support, and with no warranty, express or implied, as to its usefulness for
** any purpose.
**
** BaseServerMediaSubsession.h
**
** -------------------------------------------------------------------------*/
#pragma once
#include <sys/stat.h>
#include <string>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <sstream>
// live555
#include <liveMedia.hh>
// libv4l2cpp
#include "V4l2Device.h"
// v4l2rtspserver
#include "V4L2DeviceSource.h"
#include "logger.h"
#ifdef HAVE_ALSA
#include "ALSACapture.h"
#endif
// ---------------------------------
// BaseServerMediaSubsession
// ---------------------------------
class BaseServerMediaSubsession
{
public:
BaseServerMediaSubsession(StreamReplicator* replicator): m_replicator(replicator) {
V4L2DeviceSource* deviceSource = dynamic_cast<V4L2DeviceSource*>(replicator->inputSource());
if (deviceSource) {
DeviceInterface* device = deviceSource->getDevice();
if (device->getVideoFormat() >= 0) {
m_format = BaseServerMediaSubsession::getVideoRtpFormat(device->getVideoFormat());
} else {
m_format = BaseServerMediaSubsession::getAudioRtpFormat(device->getAudioFormat(), device->getSampleRate(), device->getChannels());
}
LOG(NOTICE) << "RTP format:" << m_format;
}
}
// -----------------------------------------
// convert V4L2 pix format to RTP mime
// -----------------------------------------
static std::string getVideoRtpFormat(int format)
{
std::string rtpFormat;
switch(format)
{
case V4L2_PIX_FMT_HEVC : rtpFormat = "video/H265"; break;
case V4L2_PIX_FMT_H264 : rtpFormat = "video/H264"; break;
case V4L2_PIX_FMT_MJPEG : rtpFormat = "video/JPEG"; break;
case V4L2_PIX_FMT_JPEG : rtpFormat = "video/JPEG"; break;
case V4L2_PIX_FMT_VP8 : rtpFormat = "video/VP8" ; break;
case V4L2_PIX_FMT_VP9 : rtpFormat = "video/VP9" ; break;
case V4L2_PIX_FMT_YUV444: rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_UYVY : rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_NV12 : rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_BGR24 : rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_BGR32 : rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_RGB24 : rtpFormat = "video/RAW" ; break;
case V4L2_PIX_FMT_RGB32 : rtpFormat = "video/RAW" ; break;
}
return rtpFormat;
}
static std::string getAudioRtpFormat(int format, int sampleRate, int channels)
{
std::ostringstream os;
#ifdef HAVE_ALSA
os << "audio/";
switch (format) {
case SND_PCM_FORMAT_A_LAW:
os << "PCMA";
break;
case SND_PCM_FORMAT_MU_LAW:
os << "PCMU";
break;
case SND_PCM_FORMAT_S8:
os << "L8";
break;
case SND_PCM_FORMAT_S24_BE:
case SND_PCM_FORMAT_S24_LE:
os << "L24";
break;
case SND_PCM_FORMAT_S32_BE:
case SND_PCM_FORMAT_S32_LE:
os << "L32";
break;
case SND_PCM_FORMAT_MPEG:
os << "MPEG";
break;
default:
os << "L16";
break;
}
os << "/" << sampleRate << "/" << channels;
#endif
return os.str();
}
public:
static FramedSource* createSource(UsageEnvironment& env, FramedSource * videoES, const std::string& format);
static RTPSink* createSink(UsageEnvironment& env, Groupsock * rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, const std::string& format, V4L2DeviceSource* source);
char const* getAuxLine(V4L2DeviceSource* source, RTPSink* rtpSink);
protected:
StreamReplicator* m_replicator;
std::string m_format;
};