opencv/modules/highgui/test/test_video_io.cpp

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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"
#include "opencv2/highgui/highgui.hpp"
#include "stdio.h"
using namespace cv;
using namespace std;
class CV_HighGuiTest : public cvtest::BaseTest
{
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protected:
void ImagesTest(const string& dir);
void VideoTest (const string& dir, int fourcc);
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public:
void run(int);
};
class CV_PositioningTest : public cvtest::BaseTest
{
public:
void run(int);
};
double PSNR(const Mat& m1, const Mat& m2)
{
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Mat tmp;
absdiff( m1.reshape(1), m2.reshape(1), tmp);
multiply(tmp, tmp, tmp);
double MSE = 1.0/(tmp.cols * tmp.rows) * sum(tmp)[0];
return 20 * log10(255.0 / sqrt(MSE));
}
void CV_HighGuiTest::ImagesTest(const string& dir)
{
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string _name = dir + string("../cv/shared/baboon.jpg");
ts->printf(ts->LOG, "reading image : %s\n", _name.c_str());
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Mat image = imread(_name);
image.convertTo(image, CV_8UC3);
if (image.empty())
{
ts->set_failed_test_info(ts->FAIL_MISSING_TEST_DATA);
return;
}
const string exts[] = {"png", "bmp", "tiff", "jpg", "jp2", "ppm", "ras" };
const size_t ext_num = sizeof(exts)/sizeof(exts[0]);
for(size_t i = 0; i < ext_num; ++i)
{
string ext = exts[i];
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string full_name = dir + "img." + ext;
ts->printf(ts->LOG, " full_name : %s\n", full_name.c_str());
imwrite(full_name, image);
Mat loaded = imread(full_name);
if (loaded.empty())
{
ts->printf(ts->LOG, "Reading failed at fmt=%s\n", ext.c_str());
ts->set_failed_test_info(ts->FAIL_MISMATCH);
continue;
}
const double thresDbell = 20;
double psnr = PSNR(loaded, image);
if (psnr < thresDbell)
{
ts->printf(ts->LOG, "Reading image from file: too big difference (=%g) with fmt=%s\n", psnr, ext.c_str());
ts->set_failed_test_info(ts->FAIL_BAD_ACCURACY);
continue;
}
vector<uchar> from_file;
FILE *f = fopen(full_name.c_str(), "rb");
fseek(f, 0, SEEK_END);
long len = ftell(f);
from_file.resize((size_t)len);
fseek(f, 0, SEEK_SET);
from_file.resize(fread(&from_file[0], 1, from_file.size(), f));
fclose(f);
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vector<uchar> buf;
imencode("." + exts[i], image, buf);
if (buf != from_file)
{
ts->printf(ts->LOG, "Encoding failed with fmt=%s\n", ext.c_str());
ts->set_failed_test_info(ts->FAIL_MISMATCH);
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continue;
}
Mat buf_loaded = imdecode(Mat(buf), 1);
if (buf_loaded.empty())
{
ts->printf(ts->LOG, "Decoding failed with fmt=%s\n", ext.c_str());
ts->set_failed_test_info(ts->FAIL_MISMATCH);
continue;
}
psnr = PSNR(buf_loaded, image);
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if (psnr < thresDbell)
{
ts->printf(ts->LOG, "Decoding image from memory: too small PSNR (=%gdb) with fmt=%s\n", psnr, ext.c_str());
ts->set_failed_test_info(ts->FAIL_MISMATCH);
continue;
}
}
ts->printf(ts->LOG, "end test function : ImagesTest \n");
ts->set_failed_test_info(ts->OK);
}
void CV_HighGuiTest::VideoTest(const string& dir, int fourcc)
{
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string src_file = dir + "../cv/shared/video_for_test.avi";
string tmp_name = dir + "video.avi";
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ts->printf(ts->LOG, "reading video : %s\n", src_file.c_str());
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CvCapture* cap = cvCaptureFromFile(src_file.c_str());
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if (!cap)
{
ts->set_failed_test_info(ts->FAIL_MISMATCH);
return;
}
CvVideoWriter* writer = 0;
int counter = 0;
for(;;)
{
IplImage * img = cvQueryFrame( cap );
if (!img)
break;
if (writer == 0)
{
writer = cvCreateVideoWriter(tmp_name.c_str(), fourcc, 24, cvGetSize(img));
if (writer == 0)
{
ts->printf(ts->LOG, "can't create writer (with fourcc : %d)\n", fourcc);
cvReleaseCapture( &cap );
ts->set_failed_test_info(ts->FAIL_MISMATCH);
return;
}
}
cvWriteFrame(writer, img);
}
cvReleaseVideoWriter( &writer );
cvReleaseCapture( &cap );
cap = cvCaptureFromFile(src_file.c_str());
CvCapture *saved = cvCaptureFromFile(tmp_name.c_str());
if (!saved)
{
ts->set_failed_test_info(ts->FAIL_MISMATCH);
return;
}
const double thresDbell = 20;
counter = 0;
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for(;;)
{
IplImage* ipl = cvQueryFrame( cap );
IplImage* ipl1 = cvQueryFrame( saved );
if (!ipl || !ipl1)
break;
Mat img(ipl);
Mat img1(ipl1);
if (PSNR(img1, img) < thresDbell)
{
ts->set_failed_test_info(ts->FAIL_MISMATCH);
break;
}
}
cvReleaseCapture( &cap );
cvReleaseCapture( &saved );
ts->printf(ts->LOG, "end test function : ImagesVideo \n");
}
void CV_PositioningTest::run(int)
{
}
void CV_HighGuiTest::run( int /*start_from */)
{
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ImagesTest(ts->get_data_path());
#if defined WIN32 || (defined __linux__ && !defined ANDROID)
#if !defined HAVE_GSTREAMER || defined HAVE_GSTREAMER_APP
const char codecs[][4] = { {'I', 'Y', 'U', 'V'},
{'X', 'V', 'I', 'D'},
{'M', 'P', 'G', '2'},
{'M', 'J', 'P', 'G'} };
printf("%s", ts->get_data_path().c_str());
int count = sizeof(codecs)/(4*sizeof(char));
for (int i = 0; i < count; ++i)
{
VideoTest(ts->get_data_path(), CV_FOURCC(codecs[i][0], codecs[i][1], codecs[i][2], codecs[i][3]));
}
#endif
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#endif
}
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TEST(Highgui_HighGui, regression) { CV_HighGuiTest test; test.safe_run(); }