Open Source Computer Vision Library https://opencv.org/
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/*M///////////////////////////////////////////////////////////////////////////////////////
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// License Agreement
// For Open Source Computer Vision Library
//
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#include "test_precomp.hpp"
namespace opencv_test { namespace {
#ifdef HAVE_FFMPEG
using namespace std;
static const char* AVI_EXT = ".avi";
static const char* MP4_EXT = ".mp4";
class CV_FFmpegWriteBigVideoTest : public cvtest::BaseTest
{
struct TestFormatEntry {
int tag;
const char* ext;
bool required;
};
static long int getFileSize(string filename)
{
FILE *p_file = NULL;
p_file = fopen(filename.c_str(), "rb");
if (p_file == NULL)
return -1;
fseek(p_file, 0, SEEK_END);
long int size = ftell(p_file);
fclose(p_file);
return size;
}
public:
void run(int)
{
const int img_r = 4096;
const int img_c = 4096;
const double fps0 = 15;
const double time_sec = 1;
const TestFormatEntry entries[] = {
{0, AVI_EXT, true},
//{VideoWriter::fourcc('D', 'I', 'V', '3'), AVI_EXT, true},
//{VideoWriter::fourcc('D', 'I', 'V', 'X'), AVI_EXT, true},
{VideoWriter::fourcc('D', 'X', '5', '0'), AVI_EXT, true},
{VideoWriter::fourcc('F', 'L', 'V', '1'), AVI_EXT, true},
{VideoWriter::fourcc('H', '2', '6', '1'), AVI_EXT, true},
{VideoWriter::fourcc('H', '2', '6', '3'), AVI_EXT, true},
{VideoWriter::fourcc('I', '4', '2', '0'), AVI_EXT, true},
//{VideoWriter::fourcc('j', 'p', 'e', 'g'), AVI_EXT, true},
{VideoWriter::fourcc('M', 'J', 'P', 'G'), AVI_EXT, true},
{VideoWriter::fourcc('m', 'p', '4', 'v'), AVI_EXT, true},
{VideoWriter::fourcc('M', 'P', 'E', 'G'), AVI_EXT, true},
//{VideoWriter::fourcc('W', 'M', 'V', '1'), AVI_EXT, true},
//{VideoWriter::fourcc('W', 'M', 'V', '2'), AVI_EXT, true},
{VideoWriter::fourcc('X', 'V', 'I', 'D'), AVI_EXT, true},
//{VideoWriter::fourcc('Y', 'U', 'Y', '2'), AVI_EXT, true},
{VideoWriter::fourcc('H', '2', '6', '4'), MP4_EXT, false}
};
const size_t n = sizeof(entries)/sizeof(entries[0]);
for (size_t j = 0; j < n; ++j)
{
int tag = entries[j].tag;
const char* ext = entries[j].ext;
string s = cv::format("%08x%s", tag, ext);
const string filename = tempfile(s.c_str());
try
{
double fps = fps0;
Size frame_s = Size(img_c, img_r);
if( tag == VideoWriter::fourcc('H', '2', '6', '1') )
frame_s = Size(352, 288);
else if( tag == VideoWriter::fourcc('H', '2', '6', '3') )
frame_s = Size(704, 576);
else if( tag == VideoWriter::fourcc('H', '2', '6', '4') )
// OpenH264 1.5.0 has resolution limitations, so lets use DCI 4K resolution
frame_s = Size(4096, 2160);
/*else if( tag == CV_FOURCC('M', 'J', 'P', 'G') ||
tag == CV_FOURCC('j', 'p', 'e', 'g') )
frame_s = Size(1920, 1080);*/
if( tag == VideoWriter::fourcc('M', 'P', 'E', 'G') )
{
frame_s = Size(720, 576);
fps = 25;
}
VideoWriter writer(filename, CAP_FFMPEG, tag, fps, frame_s);
if (writer.isOpened() == false)
{
fprintf(stderr, "\n\nFile name: %s\n", filename.c_str());
fprintf(stderr, "Codec id: %d Codec tag: %c%c%c%c\n", (int)j,
tag & 255, (tag >> 8) & 255, (tag >> 16) & 255, (tag >> 24) & 255);
fprintf(stderr, "Error: cannot create video file.\n");
if (entries[j].required)
ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
}
else
{
Mat img(frame_s, CV_8UC3, Scalar::all(0));
const int coeff = cvRound(min(frame_s.width, frame_s.height)/(fps0 * time_sec));
for (int i = 0 ; i < static_cast<int>(fps * time_sec); i++ )
{
//circle(img, Point2i(img_c / 2, img_r / 2), min(img_r, img_c) / 2 * (i + 1), Scalar(255, 0, 0, 0), 2);
rectangle(img, Point2i(coeff * i, coeff * i), Point2i(coeff * (i + 1), coeff * (i + 1)),
Scalar::all(255 * (1.0 - static_cast<double>(i) / (fps * time_sec * 2) )), -1);
writer << img;
}
writer.release();
long int sz = getFileSize(filename);
if (sz < 0)
{
fprintf(stderr, "ERROR: File name: %s was not created\n", filename.c_str());
if (entries[j].required)
ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
}
else
{
if (sz < 8192)
{
fprintf(stderr, "ERROR: File name: %s is very small (data write problems?)\n", filename.c_str());
if (entries[j].required)
ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
}
remove(filename.c_str());
}
}
}
catch(...)
{
ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
}
ts->set_failed_test_info(cvtest::TS::OK);
}
}
};
TEST(Videoio_Video, ffmpeg_writebig) { CV_FFmpegWriteBigVideoTest test; test.safe_run(); }
class CV_FFmpegReadImageTest : public cvtest::BaseTest
{
public:
void run(int)
{
try
{
string filename = ts->get_data_path() + "readwrite/ordinary.bmp";
VideoCapture cap(filename, CAP_FFMPEG);
Mat img0 = imread(filename, 1);
Mat img, img_next;
cap >> img;
cap >> img_next;
CV_Assert( !img0.empty() && !img.empty() && img_next.empty() );
double diff = cvtest::norm(img0, img, CV_C);
CV_Assert( diff == 0 );
}
catch(...)
{
ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
}
ts->set_failed_test_info(cvtest::TS::OK);
}
};
TEST(Videoio_Video, ffmpeg_image) { CV_FFmpegReadImageTest test; test.safe_run(); }
#endif
#if defined(HAVE_FFMPEG)
//////////////////////////////// Parallel VideoWriters and VideoCaptures ////////////////////////////////////
class CreateVideoWriterInvoker :
public ParallelLoopBody
{
public:
const static Size FrameSize;
static std::string TmpDirectory;
CreateVideoWriterInvoker(std::vector<VideoWriter*>& _writers, std::vector<std::string>& _files) :
ParallelLoopBody(), writers(&_writers), files(&_files)
{
}
virtual void operator() (const Range& range) const
{
for (int i = range.start; i != range.end; ++i)
{
std::ostringstream stream;
stream << i << ".avi";
std::string fileName = tempfile(stream.str().c_str());
files->operator[](i) = fileName;
writers->operator[](i) = new VideoWriter(fileName, CAP_FFMPEG, VideoWriter::fourcc('X','V','I','D'), 25.0f, FrameSize);
CV_Assert(writers->operator[](i)->isOpened());
}
}
private:
std::vector<VideoWriter*>* writers;
std::vector<std::string>* files;
};
std::string CreateVideoWriterInvoker::TmpDirectory;
const Size CreateVideoWriterInvoker::FrameSize(1020, 900);
class WriteVideo_Invoker :
public ParallelLoopBody
{
public:
enum { FrameCount = 300 };
static const Scalar ObjectColor;
static const Point Center;
WriteVideo_Invoker(const std::vector<VideoWriter*>& _writers) :
ParallelLoopBody(), writers(&_writers)
{
}
static void GenerateFrame(Mat& frame, unsigned int i)
{
frame = Scalar::all(i % 255);
std::string text = to_string(i);
putText(frame, text, Point(50, Center.y), FONT_HERSHEY_SIMPLEX, 5.0, ObjectColor, 5, CV_AA);
circle(frame, Center, i + 2, ObjectColor, 2, CV_AA);
}
virtual void operator() (const Range& range) const
{
for (int j = range.start; j < range.end; ++j)
{
VideoWriter* writer = writers->operator[](j);
CV_Assert(writer != NULL);
CV_Assert(writer->isOpened());
Mat frame(CreateVideoWriterInvoker::FrameSize, CV_8UC3);
for (unsigned int i = 0; i < FrameCount; ++i)
{
GenerateFrame(frame, i);
writer->operator<< (frame);
}
}
}
protected:
static std::string to_string(unsigned int i)
{
std::stringstream stream(std::ios::out);
stream << "frame #" << i;
return stream.str();
}
private:
const std::vector<VideoWriter*>* writers;
};
const Scalar WriteVideo_Invoker::ObjectColor(Scalar::all(0));
const Point WriteVideo_Invoker::Center(CreateVideoWriterInvoker::FrameSize.height / 2,
CreateVideoWriterInvoker::FrameSize.width / 2);
class CreateVideoCaptureInvoker :
public ParallelLoopBody
{
public:
CreateVideoCaptureInvoker(std::vector<VideoCapture*>& _readers, const std::vector<std::string>& _files) :
ParallelLoopBody(), readers(&_readers), files(&_files)
{
}
virtual void operator() (const Range& range) const
{
for (int i = range.start; i != range.end; ++i)
{
readers->operator[](i) = new VideoCapture(files->operator[](i), CAP_FFMPEG);
CV_Assert(readers->operator[](i)->isOpened());
}
}
private:
std::vector<VideoCapture*>* readers;
const std::vector<std::string>* files;
};
class ReadImageAndTest :
public ParallelLoopBody
{
public:
ReadImageAndTest(const std::vector<VideoCapture*>& _readers, cvtest::TS* _ts) :
ParallelLoopBody(), readers(&_readers), ts(_ts)
{
}
virtual void operator() (const Range& range) const
{
for (int j = range.start; j < range.end; ++j)
{
VideoCapture* capture = readers->operator[](j);
CV_Assert(capture != NULL);
CV_Assert(capture->isOpened());
const static double eps = 23.0;
unsigned int frameCount = static_cast<unsigned int>(capture->get(CAP_PROP_FRAME_COUNT));
CV_Assert(frameCount == WriteVideo_Invoker::FrameCount);
Mat reference(CreateVideoWriterInvoker::FrameSize, CV_8UC3);
for (unsigned int i = 0; i < frameCount && next; ++i)
{
Mat actual;
(*capture) >> actual;
WriteVideo_Invoker::GenerateFrame(reference, i);
EXPECT_EQ(reference.cols, actual.cols);
EXPECT_EQ(reference.rows, actual.rows);
EXPECT_EQ(reference.depth(), actual.depth());
EXPECT_EQ(reference.channels(), actual.channels());
double psnr = cvtest::PSNR(actual, reference);
if (psnr < eps)
{
#define SUM cvtest::TS::SUMMARY
ts->printf(SUM, "\nPSNR: %lf\n", psnr);
ts->printf(SUM, "Video #: %d\n", range.start);
ts->printf(SUM, "Frame #: %d\n", i);
#undef SUM
ts->set_failed_test_info(cvtest::TS::FAIL_BAD_ACCURACY);
ts->set_gtest_status();
Mat diff;
absdiff(actual, reference, diff);
EXPECT_EQ(countNonZero(diff.reshape(1) > 1), 0);
next = false;
}
}
}
}
static bool next;
private:
const std::vector<VideoCapture*>* readers;
cvtest::TS* ts;
};
bool ReadImageAndTest::next;
TEST(Videoio_Video_parallel_writers_and_readers, accuracy)
{
const unsigned int threadsCount = 4;
cvtest::TS* ts = cvtest::TS::ptr();
// creating VideoWriters
std::vector<VideoWriter*> writers(threadsCount);
Range range(0, threadsCount);
std::vector<std::string> files(threadsCount);
CreateVideoWriterInvoker invoker1(writers, files);
parallel_for_(range, invoker1);
// write a video
parallel_for_(range, WriteVideo_Invoker(writers));
// deleting the writers
for (std::vector<VideoWriter*>::iterator i = writers.begin(), end = writers.end(); i != end; ++i)
delete *i;
writers.clear();
std::vector<VideoCapture*> readers(threadsCount);
CreateVideoCaptureInvoker invoker2(readers, files);
parallel_for_(range, invoker2);
ReadImageAndTest::next = true;
parallel_for_(range, ReadImageAndTest(readers, ts));
// deleting tmp video files
for (std::vector<std::string>::const_iterator i = files.begin(), end = files.end(); i != end; ++i)
{
int code = remove(i->c_str());
if (code == 1)
std::cerr << "Couldn't delete " << *i << std::endl;
}
// delete the readers
for (std::vector<VideoCapture *>::iterator i = readers.begin(), end = readers.end(); i != end; ++i)
delete *i;
}
#endif
}} // namespace