mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2025-06-07 17:44:04 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

videoio: fixed capture open order, added apiPrefernce to FFMPEG tests

Browse Source
This commit is contained in:
Maksim Shabunin 2017-11-23 13:31:07 +03:00
parent e4aa2ccd66
commit 7628c143f4
2 changed files with 28 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
modules/videoio/src/cap.cpp
View File

@ -527,49 +527,35 @@ static Ptr<IVideoCapture> IVideoCapture_create(int index)
}
static Ptr<IVideoCapture> IVideoCapture_create(const String& filename)
static Ptr<IVideoCapture> IVideoCapture_create(const String& filename, int apiPreference)
{
int domains[] =
{
CAP_ANY,
bool useAny = (apiPreference == CAP_ANY);
Ptr<IVideoCapture> capture;
#ifdef HAVE_GPHOTO2
CAP_GPHOTO2,
#endif
#ifdef HAVE_MFX
CAP_INTEL_MFX,
#endif
-1, -1
};
// try every possibly installed camera API
for (int i = 0; domains[i] >= 0; i++)
if (useAny || apiPreference == CAP_GPHOTO2)
{
Ptr<IVideoCapture> capture;
switch (domains[i])
{
case CAP_ANY:
capture = createMotionJpegCapture(filename);
break;
#ifdef HAVE_GPHOTO2
case CAP_GPHOTO2:
capture = createGPhoto2Capture(filename);
break;
#endif
#ifdef HAVE_MFX
case CAP_INTEL_MFX:
capture = makePtr<VideoCapture_IntelMFX>(filename);
break;
#endif
}
capture = createGPhoto2Capture(filename);
if (capture && capture->isOpened())
{
return capture;
}
}
// failed open a camera
return Ptr<IVideoCapture>();
#endif
#ifdef HAVE_MFX
if (useAny || apiPreference == CAP_INTEL_MFX)
{
capture = makePtr<VideoCapture_IntelMFX>(filename);
if (capture && capture->isOpened())
return capture;
}
#endif
if (useAny || apiPreference == CAP_OPENCV_MJPEG)
{
capture = createMotionJpegCapture(filename);
if (capture && capture->isOpened())
return capture;
}
if (capture && !capture->isOpened())
capture.release();
return capture;
}
static Ptr<IVideoWriter> IVideoWriter_create(const String& filename, int apiPreference, int _fourcc, double fps, Size frameSize, bool isColor)
@ -625,7 +611,7 @@ bool VideoCapture::open(const String& filename, int apiPreference)
CV_TRACE_FUNCTION();
if (isOpened()) release();
icap = IVideoCapture_create(filename);
icap = IVideoCapture_create(filename, apiPreference);
if (!icap.empty())
return true;

8
modules/videoio/test/test_ffmpeg.cpp
View File

@ -131,7 +131,7 @@ public:
fps = 25;
}
VideoWriter writer(filename, tag, fps, frame_s);
VideoWriter writer(filename, CAP_FFMPEG, tag, fps, frame_s);
if (writer.isOpened() == false)
{
@ -194,7 +194,7 @@ public:
try
{
string filename = ts->get_data_path() + "readwrite/ordinary.bmp";
VideoCapture cap(filename);
VideoCapture cap(filename, CAP_FFMPEG);
Mat img0 = imread(filename, 1);
Mat img, img_next;
cap >> img;
@ -242,7 +242,7 @@ public:
std::string fileName = tempfile(stream.str().c_str());
files->operator[](i) = fileName;
writers->operator[](i) = new VideoWriter(fileName, VideoWriter::fourcc('X','V','I','D'), 25.0f, FrameSize);
writers->operator[](i) = new VideoWriter(fileName, CAP_FFMPEG, VideoWriter::fourcc('X','V','I','D'), 25.0f, FrameSize);
CV_Assert(writers->operator[](i)->isOpened());
}
@ -325,7 +325,7 @@ public:
{
for (int i = range.start; i != range.end; ++i)
{
readers->operator[](i) = new VideoCapture(files->operator[](i));
readers->operator[](i) = new VideoCapture(files->operator[](i), CAP_FFMPEG);
CV_Assert(readers->operator[](i)->isOpened());
}
}