Chiebot-Mirror
/
opencv
8
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

videoio: fix plugins handling if no filesystem available

Browse Source
pull/20820/head
Alexander Alekhin 4 years ago
parent 13c6eb42e9
commit c49cfefe88
3 changed files with 50 additions and 31 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 7
      modules/videoio/CMakeLists.txt
  2. 12
      modules/videoio/src/cap.cpp
  3. 62
      modules/videoio/src/videoio_registry.cpp

7
modules/videoio/CMakeLists.txt
Unescape View File

@ -1,5 +1,10 @@
set(VIDEOIO_ENABLE_PLUGINS_DEFAULT ON)
if(EMSCRIPTEN OR IOS OR WINRT)
set(VIDEOIO_ENABLE_PLUGINS_DEFAULT OFF)
endif()
set(VIDEOIO_PLUGIN_LIST "" CACHE STRING "List of videoio backends to be compiled as plugins (ffmpeg, gstreamer, mfx, msmf or special value 'all')")
set(VIDEOIO_ENABLE_PLUGINS "ON" CACHE BOOL "Allow building and using of videoio plugins")
set(VIDEOIO_ENABLE_PLUGINS "${VIDEOIO_ENABLE_PLUGINS_DEFAULT}" CACHE BOOL "Allow building and using of videoio plugins")
mark_as_advanced(VIDEOIO_PLUGIN_LIST VIDEOIO_ENABLE_PLUGINS)
string(REPLACE "," ";" VIDEOIO_PLUGIN_LIST "${VIDEOIO_PLUGIN_LIST}") # support comma-separated list (,) too

12
modules/videoio/src/cap.cpp
Unescape View File

@ -122,7 +122,11 @@ bool VideoCapture::open(const String& filename, int apiPreference, const std::ve
const VideoBackendInfo& info = backends[i];
if (apiPreference == CAP_ANY || apiPreference == info.id)
{
if (!info.backendFactory)
{
CV_LOG_DEBUG(NULL, "VIDEOIO(" << info.name << "): factory is not available (plugins require filesystem support)");
continue;
}
CV_CAPTURE_LOG_DEBUG(NULL,
cv::format("VIDEOIO(%s): trying capture filename='%s' ...",
info.name, filename.c_str()));
@ -232,10 +236,14 @@ bool VideoCapture::open(int cameraNum, int apiPreference, const std::vector<int>
const VideoBackendInfo& info = backends[i];
if (apiPreference == CAP_ANY || apiPreference == info.id)
{
if (!info.backendFactory)
{
CV_LOG_DEBUG(NULL, "VIDEOIO(" << info.name << "): factory is not available (plugins require filesystem support)");
continue;
}
CV_CAPTURE_LOG_DEBUG(NULL,
cv::format("VIDEOIO(%s): trying capture cameraNum=%d ...",
info.name, cameraNum));
CV_Assert(!info.backendFactory.empty());
const Ptr<IBackend> backend = info.backendFactory->getBackend();
if (!backend.empty())

62
modules/videoio/src/videoio_registry.cpp
Unescape View File

@ -8,6 +8,8 @@
#include "opencv2/videoio/registry.hpp"
#include "opencv2/core/utils/filesystem.private.hpp" // OPENCV_HAVE_FILESYSTEM_SUPPORT
#include "cap_librealsense.hpp"
#include "cap_dshow.hpp"
@ -34,15 +36,19 @@ namespace cv {
namespace {
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
#define DECLARE_DYNAMIC_BACKEND(cap, name, mode) \
{ \
cap, (BackendMode)(mode), 1000, name, createPluginBackendFactory(cap, name) \
}
},
#else
#define DECLARE_DYNAMIC_BACKEND(cap, name, mode) /* nothing */
#endif
#define DECLARE_STATIC_BACKEND(cap, name, mode, createCaptureFile, createCaptureCamera, createWriter) \
{ \
cap, (BackendMode)(mode), 1000, name, createBackendFactory(createCaptureFile, createCaptureCamera, createWriter) \
}
},
/** Ordering guidelines:
- modern optimized, multi-platform libraries: ffmpeg, gstreamer, Media SDK
@ -55,90 +61,90 @@ namespace {
static const struct VideoBackendInfo builtin_backends[] =
{
#ifdef HAVE_FFMPEG
DECLARE_STATIC_BACKEND(CAP_FFMPEG, "FFMPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, cvCreateFileCapture_FFMPEG_proxy, 0, cvCreateVideoWriter_FFMPEG_proxy),
DECLARE_STATIC_BACKEND(CAP_FFMPEG, "FFMPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, cvCreateFileCapture_FFMPEG_proxy, 0, cvCreateVideoWriter_FFMPEG_proxy)
#elif defined(ENABLE_PLUGINS) || defined(HAVE_FFMPEG_WRAPPER)
DECLARE_DYNAMIC_BACKEND(CAP_FFMPEG, "FFMPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER),
DECLARE_DYNAMIC_BACKEND(CAP_FFMPEG, "FFMPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER)
#endif
#ifdef HAVE_GSTREAMER
DECLARE_STATIC_BACKEND(CAP_GSTREAMER, "GSTREAMER", MODE_CAPTURE_ALL | MODE_WRITER, createGStreamerCapture_file, createGStreamerCapture_cam, create_GStreamer_writer),
DECLARE_STATIC_BACKEND(CAP_GSTREAMER, "GSTREAMER", MODE_CAPTURE_ALL | MODE_WRITER, createGStreamerCapture_file, createGStreamerCapture_cam, create_GStreamer_writer)
#elif defined(ENABLE_PLUGINS)
DECLARE_DYNAMIC_BACKEND(CAP_GSTREAMER, "GSTREAMER", MODE_CAPTURE_ALL | MODE_WRITER),
DECLARE_DYNAMIC_BACKEND(CAP_GSTREAMER, "GSTREAMER", MODE_CAPTURE_ALL | MODE_WRITER)
#endif
#ifdef HAVE_MFX // Media SDK
DECLARE_STATIC_BACKEND(CAP_INTEL_MFX, "INTEL_MFX", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, create_MFX_capture, 0, create_MFX_writer),
DECLARE_STATIC_BACKEND(CAP_INTEL_MFX, "INTEL_MFX", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, create_MFX_capture, 0, create_MFX_writer)
#elif defined(ENABLE_PLUGINS)
DECLARE_DYNAMIC_BACKEND(CAP_INTEL_MFX, "INTEL_MFX", MODE_CAPTURE_BY_FILENAME | MODE_WRITER),
DECLARE_DYNAMIC_BACKEND(CAP_INTEL_MFX, "INTEL_MFX", MODE_CAPTURE_BY_FILENAME | MODE_WRITER)
#endif
// Apple platform
#ifdef HAVE_AVFOUNDATION
DECLARE_STATIC_BACKEND(CAP_AVFOUNDATION, "AVFOUNDATION", MODE_CAPTURE_ALL | MODE_WRITER, create_AVFoundation_capture_file, create_AVFoundation_capture_cam, create_AVFoundation_writer),
DECLARE_STATIC_BACKEND(CAP_AVFOUNDATION, "AVFOUNDATION", MODE_CAPTURE_ALL | MODE_WRITER, create_AVFoundation_capture_file, create_AVFoundation_capture_cam, create_AVFoundation_writer)
#endif
// Windows
#ifdef WINRT_VIDEO
DECLARE_STATIC_BACKEND(CAP_WINRT, "WINRT", MODE_CAPTURE_BY_INDEX, 0, create_WRT_capture, 0),
DECLARE_STATIC_BACKEND(CAP_WINRT, "WINRT", MODE_CAPTURE_BY_INDEX, 0, create_WRT_capture, 0)
#endif
#ifdef HAVE_MSMF
DECLARE_STATIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER, cvCreateCapture_MSMF, cvCreateCapture_MSMF, cvCreateVideoWriter_MSMF),
DECLARE_STATIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER, cvCreateCapture_MSMF, cvCreateCapture_MSMF, cvCreateVideoWriter_MSMF)
#elif defined(ENABLE_PLUGINS) && defined(_WIN32)
DECLARE_DYNAMIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER),
DECLARE_DYNAMIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER)
#endif
#ifdef HAVE_DSHOW
DECLARE_STATIC_BACKEND(CAP_DSHOW, "DSHOW", MODE_CAPTURE_BY_INDEX, 0, create_DShow_capture, 0),
DECLARE_STATIC_BACKEND(CAP_DSHOW, "DSHOW", MODE_CAPTURE_BY_INDEX, 0, create_DShow_capture, 0)
#endif
// Linux, some Unix
#if defined HAVE_CAMV4L2
DECLARE_STATIC_BACKEND(CAP_V4L2, "V4L2", MODE_CAPTURE_ALL, create_V4L_capture_file, create_V4L_capture_cam, 0),
DECLARE_STATIC_BACKEND(CAP_V4L2, "V4L2", MODE_CAPTURE_ALL, create_V4L_capture_file, create_V4L_capture_cam, 0)
#elif defined HAVE_VIDEOIO
DECLARE_STATIC_BACKEND(CAP_V4L, "V4L_BSD", MODE_CAPTURE_ALL, create_V4L_capture_file, create_V4L_capture_cam, 0),
DECLARE_STATIC_BACKEND(CAP_V4L, "V4L_BSD", MODE_CAPTURE_ALL, create_V4L_capture_file, create_V4L_capture_cam, 0)
#endif
// RGB-D universal
#ifdef HAVE_OPENNI2
DECLARE_STATIC_BACKEND(CAP_OPENNI2, "OPENNI2", MODE_CAPTURE_ALL, create_OpenNI2_capture_file, create_OpenNI2_capture_cam, 0),
DECLARE_STATIC_BACKEND(CAP_OPENNI2, "OPENNI2", MODE_CAPTURE_ALL, create_OpenNI2_capture_file, create_OpenNI2_capture_cam, 0)
#endif
#ifdef HAVE_LIBREALSENSE
DECLARE_STATIC_BACKEND(CAP_REALSENSE, "INTEL_REALSENSE", MODE_CAPTURE_BY_INDEX, 0, create_RealSense_capture, 0),
DECLARE_STATIC_BACKEND(CAP_REALSENSE, "INTEL_REALSENSE", MODE_CAPTURE_BY_INDEX, 0, create_RealSense_capture, 0)
#endif
// OpenCV file-based only
DECLARE_STATIC_BACKEND(CAP_IMAGES, "CV_IMAGES", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, create_Images_capture, 0, create_Images_writer),
DECLARE_STATIC_BACKEND(CAP_OPENCV_MJPEG, "CV_MJPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, createMotionJpegCapture, 0, createMotionJpegWriter),
DECLARE_STATIC_BACKEND(CAP_IMAGES, "CV_IMAGES", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, create_Images_capture, 0, create_Images_writer)
DECLARE_STATIC_BACKEND(CAP_OPENCV_MJPEG, "CV_MJPEG", MODE_CAPTURE_BY_FILENAME | MODE_WRITER, createMotionJpegCapture, 0, createMotionJpegWriter)
// special interfaces / stereo cameras / other SDKs
#if defined(HAVE_DC1394_2)
DECLARE_STATIC_BACKEND(CAP_FIREWIRE, "FIREWIRE", MODE_CAPTURE_BY_INDEX, 0, create_DC1394_capture, 0),
DECLARE_STATIC_BACKEND(CAP_FIREWIRE, "FIREWIRE", MODE_CAPTURE_BY_INDEX, 0, create_DC1394_capture, 0)
#endif
// GigE
#ifdef HAVE_PVAPI
DECLARE_STATIC_BACKEND(CAP_PVAPI, "PVAPI", MODE_CAPTURE_BY_INDEX, 0, create_PvAPI_capture, 0),
DECLARE_STATIC_BACKEND(CAP_PVAPI, "PVAPI", MODE_CAPTURE_BY_INDEX, 0, create_PvAPI_capture, 0)
#endif
#ifdef HAVE_XIMEA
DECLARE_STATIC_BACKEND(CAP_XIAPI, "XIMEA", MODE_CAPTURE_ALL, create_XIMEA_capture_file, create_XIMEA_capture_cam, 0),
DECLARE_STATIC_BACKEND(CAP_XIAPI, "XIMEA", MODE_CAPTURE_ALL, create_XIMEA_capture_file, create_XIMEA_capture_cam, 0)
#endif
#ifdef HAVE_ARAVIS_API
DECLARE_STATIC_BACKEND(CAP_ARAVIS, "ARAVIS", MODE_CAPTURE_BY_INDEX, 0, create_Aravis_capture, 0),
DECLARE_STATIC_BACKEND(CAP_ARAVIS, "ARAVIS", MODE_CAPTURE_BY_INDEX, 0, create_Aravis_capture, 0)
#endif
#ifdef HAVE_UEYE // uEye
DECLARE_STATIC_BACKEND(CAP_UEYE, "UEYE", MODE_CAPTURE_BY_INDEX, 0, create_ueye_camera, 0),
DECLARE_STATIC_BACKEND(CAP_UEYE, "UEYE", MODE_CAPTURE_BY_INDEX, 0, create_ueye_camera, 0)
#elif defined(ENABLE_PLUGINS)
DECLARE_DYNAMIC_BACKEND(CAP_UEYE, "UEYE", MODE_CAPTURE_BY_INDEX),
DECLARE_DYNAMIC_BACKEND(CAP_UEYE, "UEYE", MODE_CAPTURE_BY_INDEX)
#endif
#ifdef HAVE_GPHOTO2
DECLARE_STATIC_BACKEND(CAP_GPHOTO2, "GPHOTO2", MODE_CAPTURE_ALL, createGPhoto2Capture, createGPhoto2Capture, 0),
DECLARE_STATIC_BACKEND(CAP_GPHOTO2, "GPHOTO2", MODE_CAPTURE_ALL, createGPhoto2Capture, createGPhoto2Capture, 0)
#endif
#ifdef HAVE_XINE
DECLARE_STATIC_BACKEND(CAP_XINE, "XINE", MODE_CAPTURE_BY_FILENAME, createXINECapture, 0, 0),
DECLARE_STATIC_BACKEND(CAP_XINE, "XINE", MODE_CAPTURE_BY_FILENAME, createXINECapture, 0, 0)
#endif
#if defined(HAVE_ANDROID_MEDIANDK) || defined(HAVE_ANDROID_NATIVE_CAMERA)
DECLARE_STATIC_BACKEND(CAP_ANDROID, "ANDROID_NATIVE",
@ -163,7 +169,7 @@ static const struct VideoBackendInfo builtin_backends[] =
#else
0,
#endif
0),
0)
#endif
// dropped backends: MIL, TYZX
};

Write Preview
Loading…
Cancel
Save