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Merge pull request #6359 from alalek:videocapture_exceptions
This commit is contained in:
Alexander Alekhin
commit
169b5e9fde
@ -117,6 +117,36 @@ CV_IMPL int cvGetCaptureDomain( CvCapture* capture)
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return capture ? capture->getCaptureDomain() : 0;
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}
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static bool get_capture_debug_flag()
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{
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static bool initialized = false;
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static bool flag = false;
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if (!initialized)
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{
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#ifndef NO_GETENV
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flag = getenv("OPENCV_VIDEOCAPTURE_DEBUG") ? true : false; // TODO Use getBoolParameter
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#endif
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initialized = true;
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}
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return flag;
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}
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#define TRY_OPEN(capture, backend_func) \
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{ \
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if (!capture) \
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try { \
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if (get_capture_debug_flag()) fprintf(stderr, "VIDEOIO(%s): trying ...\n", #backend_func); \
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capture = backend_func; \
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if (get_capture_debug_flag()) fprintf(stderr, "VIDEOIO(%s): result=%p ...\n", #backend_func, capture); \
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} catch (const cv::Exception& e) { \
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fprintf(stderr, "VIDEOIO(%s): raised OpenCV exception:\n\n%s\n", #backend_func, e.what()); \
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} catch (const std::exception& e) { \
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fprintf(stderr, "VIDEOIO(%s): raised C++ exception:\n\n%s\n", #backend_func, e.what()); \
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} catch (...) { \
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fprintf(stderr, "VIDEOIO(%s): raised unknown C++ exception!\n\n", #backend_func); \
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} \
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}
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/**
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* Camera dispatching method: index is the camera number.
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@ -144,120 +174,101 @@ CV_IMPL CvCapture * cvCreateCameraCapture (int index)
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#ifdef HAVE_MSMF
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case CV_CAP_MSMF:
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if (!capture)
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capture = cvCreateCameraCapture_MSMF(index);
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TRY_OPEN(capture, cvCreateCameraCapture_MSMF(index))
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if (pref) break;
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#endif
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#ifdef HAVE_TYZX
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case CV_CAP_STEREO:
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if (!capture)
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capture = cvCreateCameraCapture_TYZX(index);
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TRY_OPEN(capture, cvCreateCameraCapture_TYZX(index))
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if (pref) break;
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#endif
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case CV_CAP_VFW:
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#ifdef HAVE_VFW
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if (!capture)
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capture = cvCreateCameraCapture_VFW(index);
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#endif
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#if defined HAVE_LIBV4L || defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO
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if (!capture)
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capture = cvCreateCameraCapture_V4L(index);
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#endif
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#ifdef HAVE_GSTREAMER
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if (!capture)
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capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2,
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reinterpret_cast<char *>(index));
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if (!capture)
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capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L,
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reinterpret_cast<char *>(index));
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TRY_OPEN(capture, cvCreateCameraCapture_VFW(index))
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#endif
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if (pref) break; // CV_CAP_VFW
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#if defined HAVE_LIBV4L || defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO
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TRY_OPEN(capture, cvCreateCameraCapture_V4L(index))
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#endif
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#ifdef HAVE_GSTREAMER
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TRY_OPEN(capture, cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2, reinterpret_cast<char *>(index)))
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TRY_OPEN(capture, cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L, reinterpret_cast<char *>(index)))
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#endif
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case CV_CAP_FIREWIRE:
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#ifdef HAVE_DC1394_2
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if (!capture)
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capture = cvCreateCameraCapture_DC1394_2(index);
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TRY_OPEN(capture, cvCreateCameraCapture_DC1394_2(index))
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#endif
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#ifdef HAVE_DC1394
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if (!capture)
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capture = cvCreateCameraCapture_DC1394(index);
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TRY_OPEN(capture, cvCreateCameraCapture_DC1394(index))
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#endif
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#ifdef HAVE_CMU1394
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if (!capture)
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capture = cvCreateCameraCapture_CMU(index);
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TRY_OPEN(capture, cvCreateCameraCapture_CMU(index))
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#endif
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#if defined(HAVE_GSTREAMER) && 0
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// Re-enable again when gstreamer 1394 support will land in the backend code
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if (!capture)
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capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_1394, 0);
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TRY_OPEN(capture, cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_1394, 0))
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#endif
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if (pref) break; // CV_CAP_FIREWIRE
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#ifdef HAVE_MIL
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case CV_CAP_MIL:
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if (!capture)
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capture = cvCreateCameraCapture_MIL(index);
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TRY_OPEN(capture, cvCreateCameraCapture_MIL(index))
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if (pref) break;
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#endif
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#if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
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case CV_CAP_QT:
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if (!capture)
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capture = cvCreateCameraCapture_QT(index);
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TRY_OPEN(capture, cvCreateCameraCapture_QT(index))
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if (pref) break;
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#endif
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#ifdef HAVE_UNICAP
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case CV_CAP_UNICAP:
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if (!capture)
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capture = cvCreateCameraCapture_Unicap(index);
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TRY_OPEN(capture, cvCreateCameraCapture_Unicap(index))
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if (pref) break;
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#endif
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#ifdef HAVE_PVAPI
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case CV_CAP_PVAPI:
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if (!capture)
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capture = cvCreateCameraCapture_PvAPI(index);
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TRY_OPEN(capture, cvCreateCameraCapture_PvAPI(index))
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if (pref) break;
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#endif
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#ifdef HAVE_OPENNI
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case CV_CAP_OPENNI:
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if (!capture)
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capture = cvCreateCameraCapture_OpenNI(index);
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TRY_OPEN(capture, cvCreateCameraCapture_OpenNI(index))
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if (pref) break;
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#endif
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#ifdef HAVE_OPENNI2
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case CV_CAP_OPENNI2:
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if (!capture)
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capture = cvCreateCameraCapture_OpenNI2(index);
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TRY_OPEN(capture, cvCreateCameraCapture_OpenNI2(index))
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if (pref) break;
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#endif
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#ifdef HAVE_XIMEA
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case CV_CAP_XIAPI:
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if (!capture)
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capture = cvCreateCameraCapture_XIMEA(index);
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TRY_OPEN(capture, cvCreateCameraCapture_XIMEA(index))
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if (pref) break;
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#endif
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#ifdef HAVE_AVFOUNDATION
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case CV_CAP_AVFOUNDATION:
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if (!capture)
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capture = cvCreateCameraCapture_AVFoundation(index);
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TRY_OPEN(capture, cvCreateCameraCapture_AVFoundation(index))
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if (pref) break;
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#endif
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#ifdef HAVE_GIGE_API
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case CV_CAP_GIGANETIX:
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if (!capture)
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capture = cvCreateCameraCapture_Giganetix(index);
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TRY_OPEN(capture, cvCreateCameraCapture_Giganetix(index))
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if (pref) break; // CV_CAP_GIGANETIX
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#endif
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}
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@ -281,66 +292,56 @@ CV_IMPL CvCapture * cvCreateFileCaptureWithPreference (const char * filename, in
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#ifdef HAVE_FFMPEG
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case CV_CAP_FFMPEG:
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if (! result)
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result = cvCreateFileCapture_FFMPEG_proxy (filename);
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TRY_OPEN(result, cvCreateFileCapture_FFMPEG_proxy (filename))
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if (apiPreference) break;
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#endif
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#ifdef HAVE_VFW
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case CV_CAP_VFW:
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if (! result)
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result = cvCreateFileCapture_VFW (filename);
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TRY_OPEN(result, cvCreateFileCapture_VFW (filename))
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if (apiPreference) break;
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#endif
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#if defined HAVE_LIBV4L || defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO
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if (!result)
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result = cvCreateCameraCapture_V4L(filename);
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TRY_OPEN(result, cvCreateCameraCapture_V4L(filename))
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if (apiPreference) break;
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#endif
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case CV_CAP_MSMF:
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#ifdef HAVE_MSMF
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if (! result)
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result = cvCreateFileCapture_MSMF (filename);
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TRY_OPEN(result, cvCreateFileCapture_MSMF (filename))
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#endif
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#ifdef HAVE_XINE
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if (! result)
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result = cvCreateFileCapture_XINE (filename);
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TRY_OPEN(result, cvCreateFileCapture_XINE (filename))
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#endif
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if (apiPreference) break;
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#ifdef HAVE_GSTREAMER
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case CV_CAP_GSTREAMER:
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if (! result)
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result = cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename);
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TRY_OPEN(result, cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename))
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if (apiPreference) break;
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#endif
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#if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
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case CV_CAP_QT:
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if (! result)
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result = cvCreateFileCapture_QT (filename);
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TRY_OPEN(result, cvCreateFileCapture_QT (filename))
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if (apiPreference) break;
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#endif
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#ifdef HAVE_AVFOUNDATION
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case CV_CAP_AVFOUNDATION:
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if (! result)
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result = cvCreateFileCapture_AVFoundation (filename);
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TRY_OPEN(result, cvCreateFileCapture_AVFoundation (filename))
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if (apiPreference) break;
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#endif
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#ifdef HAVE_OPENNI
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case CV_CAP_OPENNI:
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if (! result)
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result = cvCreateFileCapture_OpenNI (filename);
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TRY_OPEN(result, cvCreateFileCapture_OpenNI (filename))
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if (apiPreference) break;
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#endif
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case CV_CAP_IMAGES:
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if (! result)
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result = cvCreateFileCapture_Images (filename);
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TRY_OPEN(result, cvCreateFileCapture_Images (filename))
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}
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return result;
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@ -358,63 +359,47 @@ CV_IMPL CvCapture * cvCreateFileCapture (const char * filename)
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CV_IMPL CvVideoWriter* cvCreateVideoWriter( const char* filename, int fourcc,
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double fps, CvSize frameSize, int is_color )
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{
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// If none of the writers is used
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// these statements suppress 'unused parameter' warnings.
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CV_UNUSED(frameSize);
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CV_UNUSED(is_color);
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//CV_FUNCNAME( "cvCreateVideoWriter" );
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CvVideoWriter *result = 0;
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if(!fourcc || !fps)
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result = cvCreateVideoWriter_Images(filename);
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TRY_OPEN(result, cvCreateVideoWriter_Images(filename))
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#ifdef HAVE_FFMPEG
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if(!result)
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result = cvCreateVideoWriter_FFMPEG_proxy (filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_FFMPEG_proxy (filename, fourcc, fps, frameSize, is_color))
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#endif
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#ifdef HAVE_VFW
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if(!result)
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result = cvCreateVideoWriter_VFW(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_VFW(filename, fourcc, fps, frameSize, is_color))
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#endif
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#ifdef HAVE_MSMF
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if (!result)
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result = cvCreateVideoWriter_MSMF(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_MSMF(filename, fourcc, fps, frameSize, is_color))
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#endif
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/* #ifdef HAVE_XINE
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if(!result)
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result = cvCreateVideoWriter_XINE(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_XINE(filename, fourcc, fps, frameSize, is_color))
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#endif
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*/
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#ifdef HAVE_AVFOUNDATION
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if (! result)
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result = cvCreateVideoWriter_AVFoundation(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_AVFoundation(filename, fourcc, fps, frameSize, is_color))
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#endif
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#if defined(HAVE_QUICKTIME) || defined(HAVE_QTKIT)
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if(!result)
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result = cvCreateVideoWriter_QT(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_QT(filename, fourcc, fps, frameSize, is_color))
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#endif
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#ifdef HAVE_GSTREAMER
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if (! result)
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result = cvCreateVideoWriter_GStreamer(filename, fourcc, fps, frameSize, is_color);
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TRY_OPEN(result, cvCreateVideoWriter_GStreamer(filename, fourcc, fps, frameSize, is_color))
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#endif
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#if !defined(HAVE_FFMPEG) && \
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!defined(HAVE_VFW) && \
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!defined(HAVE_MSMF) && \
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!defined(HAVE_AVFOUNDATION) && \
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!defined(HAVE_QUICKTIME) && \
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!defined(HAVE_QTKIT) && \
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!defined(HAVE_GSTREAMER)
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// If none of the writers is used
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// these statements suppress 'unused parameter' warnings.
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(void)frameSize;
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(void)is_color;
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#endif
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if(!result)
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result = cvCreateVideoWriter_Images(filename);
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TRY_OPEN(result, cvCreateVideoWriter_Images(filename))
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return result;
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}
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