#include "opencv2/core/utility.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui.hpp"
#include <string>
#include <iostream>
#include <map>
using namespace std;
using namespace cv;
//================================================================================
template<typename M>
inline typename M::mapped_type getValue(const M &dict, const typename M::key_type &key, const string & errorMessage)
{
typename M::const_iterator it = dict.find(key);
if (it == dict.end())
{
CV_Error(Error::StsBadArg, errorMessage);
}
return it->second;
}
inline map<string, Size> sizeByResolution()
{
map<string, Size> res;
res["720p"] = Size(1280, 720);
res["1080p"] = Size(1920, 1080);
res["4k"] = Size(3840, 2160);
return res;
}
inline map<string, int> fourccByCodec()
{
map<string, int> res;
res["h264"] = VideoWriter::fourcc('H','2','6','4');
res["h265"] = VideoWriter::fourcc('H','E','V','C');
res["mpeg2"] = VideoWriter::fourcc('M','P','E','G');
res["mpeg4"] = VideoWriter::fourcc('M','P','4','2');
res["mjpeg"] = VideoWriter::fourcc('M','J','P','G');
res["vp8"] = VideoWriter::fourcc('V','P','8','0');
return res;
}
inline map<string, string> defaultEncodeElementByCodec()
{
map<string, string> res;
res["h264"] = "x264enc";
res["h265"] = "x265enc";
res["mpeg2"] = "mpeg2enc";
res["mjpeg"] = "jpegenc";
res["vp8"] = "vp8enc";
return res;
}
inline map<string, string> VAAPIEncodeElementByCodec()
{
map<string, string> res;
res["h264"] = "parsebin ! vaapih264enc";
res["h265"] = "parsebin ! vaapih265enc";
res["mpeg2"] = "parsebin ! vaapimpeg2enc";
res["mjpeg"] = "parsebin ! vaapijpegenc";
res["vp8"] = "parsebin ! vaapivp8enc";
return res;
}
inline map<string, string> mfxDecodeElementByCodec()
{
map<string, string> res;
res["h264"] = "parsebin ! mfxh264dec";
res["h265"] = "parsebin ! mfxhevcdec";
res["mpeg2"] = "parsebin ! mfxmpeg2dec";
res["mjpeg"] = "parsebin ! mfxjpegdec";
return res;
}
inline map<string, string> mfxEncodeElementByCodec()
{
map<string, string> res;
res["h264"] = "mfxh264enc";
res["h265"] = "mfxhevcenc";
res["mpeg2"] = "mfxmpeg2enc";
res["mjpeg"] = "mfxjpegenc";
return res;
}
inline map<string, string> libavDecodeElementByCodec()
{
map<string, string> res;
res["h264"] = "parsebin ! avdec_h264";
res["h265"] = "parsebin ! avdec_h265";
res["mpeg2"] = "parsebin ! avdec_mpeg2video";
res["mpeg4"] = "parsebin ! avdec_mpeg4";
res["mjpeg"] = "parsebin ! avdec_mjpeg";
res["vp8"] = "parsebin ! avdec_vp8";
return res;
}
inline map<string, string> libavEncodeElementByCodec()
{
map<string, string> res;
res["h264"] = "avenc_h264";
res["h265"] = "avenc_h265";
res["mpeg2"] = "avenc_mpeg2video";
res["mpeg4"] = "avenc_mpeg4";
res["mjpeg"] = "avenc_mjpeg";
res["vp8"] = "avenc_vp8";
return res;
}
inline map<string, string> demuxPluginByContainer()
{
map<string, string> res;
res["avi"] = "avidemux";
res["mp4"] = "qtdemux";
res["mov"] = "qtdemux";
res["mkv"] = "matroskademux";
return res;
}
inline map<string, string> muxPluginByContainer()
{
map<string, string> res;
res["avi"] = "avimux";
res["mp4"] = "qtmux";
res["mov"] = "qtmux";
res["mkv"] = "matroskamux";
return res;
}
//================================================================================
inline string containerByName(const string &name)
{
size_t found = name.rfind(".");
if (found != string::npos)
{
return name.substr(found + 1); // container type
}
return string();
}
//================================================================================
inline Ptr<VideoCapture> createCapture(const string &backend, const string &file_name, const string &codec)
{
if (backend == "gst-default")
{
cout << "Created GStreamer capture ( " << file_name << " )" << endl;
return makePtr<VideoCapture>(file_name, CAP_GSTREAMER);
}
else if (backend.find("gst") == 0)
{
ostringstream line;
line << "filesrc location=\"" << file_name << "\"";
line << " ! ";
line << getValue(demuxPluginByContainer(), containerByName(file_name), "Invalid container");
line << " ! ";
if (backend.find("basic") == 4)
line << "decodebin";
else if (backend.find("vaapi") == 4)
line << "vaapidecodebin";
else if (backend.find("libav") == 4)
line << getValue(libavDecodeElementByCodec(), codec, "Invalid codec");
else if (backend.find("mfx") == 4)
line << getValue(mfxDecodeElementByCodec(), codec, "Invalid or unsupported codec");
else
return Ptr<VideoCapture>();
line << " ! videoconvert n-threads=" << getNumThreads();
line << " ! appsink sync=false";
cout << "Created GStreamer capture ( " << line.str() << " )" << endl;
return makePtr<VideoCapture>(line.str(), CAP_GSTREAMER);
}
else if (backend == "ffmpeg")
{
cout << "Created FFmpeg capture ( " << file_name << " )" << endl;
return makePtr<VideoCapture>(file_name, CAP_FFMPEG);
}
return Ptr<VideoCapture>();
}
inline Ptr<VideoCapture> createSynthSource(Size sz, unsigned fps)
{
ostringstream line;
line << "videotestsrc pattern=smpte";
line << " ! video/x-raw";
line << ",width=" << sz.width << ",height=" << sz.height;
if (fps > 0)
line << ",framerate=" << fps << "/1";
line << " ! appsink sync=false";
cout << "Created synthetic video source ( " << line.str() << " )" << endl;
return makePtr<VideoCapture>(line.str(), CAP_GSTREAMER);
}
inline Ptr<VideoWriter> createWriter(const string &backend, const string &file_name, const string &codec, Size sz, unsigned fps)
{
if (backend == "gst-default")
{
cout << "Created GStreamer writer ( " << file_name << ", FPS=" << fps << ", Size=" << sz << ")" << endl;
return makePtr<VideoWriter>(file_name, CAP_GSTREAMER, getValue(fourccByCodec(), codec, "Invalid codec"), fps, sz, true);
}
else if (backend.find("gst") == 0)
{
ostringstream line;
line << "appsrc ! videoconvert n-threads=" << getNumThreads() << " ! ";
if (backend.find("basic") == 4)
line << getValue(defaultEncodeElementByCodec(), codec, "Invalid codec");
else if (backend.find("vaapi") == 4)
line << getValue(VAAPIEncodeElementByCodec(), codec, "Invalid codec");
else if (backend.find("libav") == 4)
line << getValue(libavEncodeElementByCodec(), codec, "Invalid codec");
else if (backend.find("mfx") == 4)
line << getValue(mfxEncodeElementByCodec(), codec, "Invalid codec");
else
return Ptr<VideoWriter>();
line << " ! ";
line << getValue(muxPluginByContainer(), containerByName(file_name), "Invalid container");
line << " ! ";
line << "filesink location=\"" << file_name << "\"";
cout << "Created GStreamer writer ( " << line.str() << " )" << endl;
return makePtr<VideoWriter>(line.str(), CAP_GSTREAMER, 0, fps, sz, true);
}
else if (backend == "ffmpeg")
{
cout << "Created FFmpeg writer ( " << file_name << ", FPS=" << fps << ", Size=" << sz << " )" << endl;
return makePtr<VideoWriter>(file_name, CAP_FFMPEG, getValue(fourccByCodec(), codec, "Invalid codec"), fps, sz, true);
}
return Ptr<VideoWriter>();
}
//================================================================================
int main(int argc, char *argv[])
{
const string keys =
"{h help usage ? | | print help messages }"
"{m mode |decode | coding mode (supported: encode, decode) }"
"{b backend |default | video backend (supported: 'gst-default', 'gst-basic', 'gst-vaapi', 'gst-libav', 'gst-mfx', 'ffmpeg') }"
"{c codec |h264 | codec name (supported: 'h264', 'h265', 'mpeg2', 'mpeg4', 'mjpeg', 'vp8') }"
"{f file path | | path to file }"
"{r resolution |720p | video resolution for encoding (supported: '720p', '1080p', '4k') }"
"{fps |30 | fix frame per second for encoding (supported: fps > 0) }"
"{fast | | fast measure fps }";
CommandLineParser cmd_parser(argc, argv, keys);
cmd_parser.about("This program measures performance of video encoding and decoding using different backends OpenCV.");
if (cmd_parser.has("help"))
{
cmd_parser.printMessage();
return 0;
}
bool fast_measure = cmd_parser.has("fast"); // fast measure fps
unsigned fix_fps = cmd_parser.get<unsigned>("fps"); // fixed frame per second
string backend = cmd_parser.get<string>("backend"); // video backend
string mode = cmd_parser.get<string>("mode"); // coding mode
string codec = cmd_parser.get<string>("codec"); // codec type
string file_name = cmd_parser.get<string>("file"); // path to videofile
string resolution = cmd_parser.get<string>("resolution"); // video resolution
if (!cmd_parser.check())
{
cmd_parser.printErrors();
return -1;
}
if (mode != "encode" && mode != "decode")
{
cout << "Unsupported mode: " << mode << endl;
return -1;
}
if (mode == "decode")
{
file_name = samples::findFile(file_name);
}
cout << "Mode: " << mode << ", Backend: " << backend << ", File: " << file_name << ", Codec: " << codec << endl;
TickMeter total;
Ptr<VideoCapture> cap;
Ptr<VideoWriter> wrt;
try
{
if (mode == "decode")
{
cap = createCapture(backend, file_name, codec);
if (!cap)
{
cout << "Failed to create video capture" << endl;
return -3;
}
if (!cap->isOpened())
{
cout << "Capture is not opened" << endl;
return -4;
}
}
else if (mode == "encode")
{
Size sz = getValue(sizeByResolution(), resolution, "Invalid resolution");
cout << "FPS: " << fix_fps << ", Frame size: " << sz << endl;
cap = createSynthSource(sz, fix_fps);
wrt = createWriter(backend, file_name, codec, sz, fix_fps);
if (!cap || !wrt)
{
cout << "Failed to create synthetic video source or video writer" << endl;
return -3;
}
if (!cap->isOpened() || !wrt->isOpened())
{
cout << "Synthetic video source or video writer is not opened" << endl;
return -4;
}
}
}
catch (...)
{
cout << "Unsupported parameters" << endl;
return -2;
}
TickMeter tick;
Mat frame;
Mat element;
total.start();
while(true)
{
if (mode == "decode")
{
tick.start();
if (!cap->grab())
{
cout << "No more frames - break" << endl;
break;
}
if (!cap->retrieve(frame))
{
cout << "Failed to retrieve frame - break" << endl;
break;
}
if (frame.empty())
{
cout << "Empty frame received - break" << endl;
break;
}
tick.stop();
}
else if (mode == "encode")
{
int limit = 100;
while (!cap->grab() && --limit != 0)
{
cout << "Skipping empty input frame - " << limit << endl;
}
cap->retrieve(element);
tick.start();
*wrt << element;
tick.stop();
}
if (fast_measure && tick.getCounter() >= 1000)
{
cout << "Fast mode frame limit reached - break" << endl;
break;
}
if (mode == "encode" && tick.getCounter() >= 1000)
{
cout << "Encode frame limit reached - break" << endl;
break;
}
}
total.stop();
if (tick.getCounter() == 0)
{
cout << "No frames have been processed" << endl;
return -10;
}
else
{
double res_fps = tick.getCounter() / tick.getTimeSec();
cout << tick.getCounter() << " frames in " << tick.getTimeSec() << " sec ~ " << res_fps << " FPS" << " (total time: " << total.getTimeSec() << " sec)" << endl;
}
return 0;
}