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cmake: fix handling of VIDEOIO_ENABLE_PLUGINS=OFF

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This commit is contained in:
Alexander Alekhin 2021-04-19 02:01:57 +00:00
parent cfb77091ca
commit 0df6159149
3 changed files with 14 additions and 6 deletions
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16
modules/videoio/CMakeLists.txt
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@ -1,12 +1,18 @@
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 videoio plugin support")
set(VIDEOIO_ENABLE_PLUGINS "ON" CACHE BOOL "Allow building and using of videoio plugins")
mark_as_advanced(VIDEOIO_PLUGIN_LIST VIDEOIO_ENABLE_PLUGINS)
string(REPLACE "," ";" VIDEOIO_PLUGIN_LIST "${VIDEOIO_PLUGIN_LIST}") # support comma-separated list (,) too
# Make virtual opencv_videoio_plugins target
if(NOT TARGET opencv_videoio_plugins)
add_custom_target(opencv_videoio_plugins ALL)
if(NOT VIDEOIO_ENABLE_PLUGINS)
if(VIDEOIO_PLUGIN_LIST)
message(WARNING "VideoIO: plugins are disabled through VIDEOIO_ENABLE_PLUGINS, so VIDEOIO_PLUGIN_LIST='${VIDEOIO_PLUGIN_LIST}' is ignored")
set(VIDEOIO_PLUGIN_LIST "")
endif()
else()
# Make virtual opencv_videoio_plugins target
if(NOT TARGET opencv_videoio_plugins)
add_custom_target(opencv_videoio_plugins ALL)
endif()
endif()
ocv_add_module(videoio opencv_imgproc opencv_imgcodecs WRAP java objc python)

2
modules/videoio/src/backend_plugin.cpp
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@ -684,6 +684,8 @@ Ptr<IBackendFactory> createPluginBackendFactory(VideoCaptureAPIs id, const char*
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(ENABLE_PLUGINS)
return makePtr<impl::PluginBackendFactory>(id, baseName); //.staticCast<IBackendFactory>();
#else
CV_UNUSED(id);
CV_UNUSED(baseName);
return Ptr<IBackendFactory>();
#endif
}

2
modules/videoio/src/videoio_registry.cpp
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@ -84,7 +84,7 @@ static const struct VideoBackendInfo builtin_backends[] =
#ifdef HAVE_MSMF
DECLARE_STATIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER, cvCreateCapture_MSMF, cvCreateCapture_MSMF, cvCreateVideoWriter_MSMF),
#elif defined(ENABLE_PLUGINS)
#elif defined(ENABLE_PLUGINS) && defined(_WIN32)
DECLARE_DYNAMIC_BACKEND(CAP_MSMF, "MSMF", MODE_CAPTURE_ALL | MODE_WRITER),
#endif