How to compile opencv gstreamer plugins for android?
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Hi, i am trying to compile opencv gstreamer plugins from gst-plugins-bad for
android. I followed the instructions on https://gstreamer.freedesktop.org/documentation/installing/building-from-source-using-cerbero.html?gi-language=c and built gstreamer with cerbero. I downloaded and compiled opencv v3.4.6 (i also tried with many other versions, but its always the same problem) for android and added the generated opencv.pc to pkg config path (and also opencv2 directory to the standard path .../arm64/include/gstreamer-1.0). To save some time i also modified makefile.am to compile only one plugin gstcvdilate.cpp: plugin_LTLIBRARIES = libgstopencv.la CXXFLAGS += -frtti -fexceptions # sources used to compile this plug-in libgstopencv_la_SOURCES = gstcvdilate.cpp #gstopencv.cpp libgstopencv_la_CXXFLAGS = \ -I$(top_srcdir)/gst-libs \ -I$(top_builddir)/gst-libs \ $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) $(OPENCV_CFLAGS) \ -DGST_HAAR_CASCADES_DIR=\"$(pkgdatadir)/@GST_API_VERSION@/opencv_haarcascades\" # flags used to compile this facedetect # add other _CFLAGS and _LIBS as needed # # override CV_INLINE: GLib will take care of defining 'inline' sufficiently and # OpenCV's define isn't good enough to avoid 'unused' gcc warnings (at v2.1.0) libgstopencv_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) \ $(GST_CFLAGS) $(OPENCV_CFLAGS) \ -DCV_INLINE="static inline" \ -DCV_NO_BACKWARD_COMPATIBILITY libgstopencv_la_LIBADD = \ $(top_builddir)/gst-libs/gst/opencv/libgstopencv-$(GST_API_VERSION).la \ $(GST_LIBS) $(GST_BASE_LIBS) $(OPENCV_LIBS) \ $(GSTPB_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) -lstdc++ libgstopencv_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) libgstopencv_la_LIBTOOLFLAGS = --tag=disable-static # headers we need but don't want installed noinst_HEADERS = gstcvdilate.h gstcvdilateerode.h opencv_haarcascadesdir = $(pkgdatadir)/$(GST_API_VERSION)/opencv_haarcascades opencv_haarcascades_DATA = fist.xml palm.xml EXTRA_DIST = $(opencv_haarcascades_DATA) but when i try to compile this plugin with make it always gives this error (and many more linker errors if i try more plugins): <http://gstreamer-devel.966125.n4.nabble.com/file/t379578/VirtualBoxVM_XJmc7gU6vR.png> Can anyone help me? I've been trying to compile opencv plugins for a month now but no luck. Thanks in advance. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Lulek wrote
> Hi, i am trying to compile opencv gstreamer plugins from gst-plugins-bad > for > android. I followed the instructions on > https://gstreamer.freedesktop.org/documentation/installing/building-from-source-using-cerbero.html?gi-language=c > and built gstreamer with cerbero. I downloaded and compiled opencv v3.4.6 > (i > also tried with many other versions, but its always the same problem) for > android and added the generated opencv.pc to pkg config path (and also > opencv2 directory to the standard path .../arm64/include/gstreamer-1.0). > To > save some time i also modified makefile.am to compile only one plugin > gstcvdilate.cpp: > > plugin_LTLIBRARIES = libgstopencv.la > CXXFLAGS += -frtti -fexceptions > > # sources used to compile this plug-in > > libgstopencv_la_SOURCES = gstcvdilate.cpp #gstopencv.cpp > > libgstopencv_la_CXXFLAGS = \ > -I$(top_srcdir)/gst-libs \ > -I$(top_builddir)/gst-libs \ > $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CXXFLAGS) > $(OPENCV_CFLAGS) \ > > -DGST_HAAR_CASCADES_DIR=\"$(pkgdatadir)/@GST_API_VERSION@/opencv_haarcascades\" > > # flags used to compile this facedetect > # add other _CFLAGS and _LIBS as needed > # > # override CV_INLINE: GLib will take care of defining 'inline' > sufficiently > and > # OpenCV's define isn't good enough to avoid 'unused' gcc warnings (at > v2.1.0) > libgstopencv_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) \ > $(GST_CFLAGS) $(OPENCV_CFLAGS) \ > -DCV_INLINE="static inline" \ > -DCV_NO_BACKWARD_COMPATIBILITY > > libgstopencv_la_LIBADD = \ > $(top_builddir)/gst-libs/gst/opencv/libgstopencv-$(GST_API_VERSION).la > \ > $(GST_LIBS) $(GST_BASE_LIBS) $(OPENCV_LIBS) \ > $(GSTPB_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) -lstdc++ > > libgstopencv_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) > libgstopencv_la_LIBTOOLFLAGS = --tag=disable-static > > # headers we need but don't want installed > noinst_HEADERS = gstcvdilate.h gstcvdilateerode.h > > > opencv_haarcascadesdir = > $(pkgdatadir)/$(GST_API_VERSION)/opencv_haarcascades > opencv_haarcascades_DATA = fist.xml palm.xml > > EXTRA_DIST = $(opencv_haarcascades_DATA) > > but when i try to compile this plugin with make it always gives this error > (and many more linker errors if i try more plugins): > > <http://gstreamer-devel.966125.n4.nabble.com/file/t379578/VirtualBoxVM_XJmc7gU6vR.png> > > Can anyone help me? I've been trying to compile opencv plugins for a month > now but no luck. Thanks in advance. > > > > -- > Sent from: http://gstreamer-devel.966125.n4.nabble.com/ > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@.freedesktop > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel You need to provide a visible definition of your dilate erode function that can't be found. That's why compilation fails. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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evaluat0r wrote
> You need to provide a visible definition of your dilate erode function > that > can't be found. That's why compilation fails. Yes that was one of the problems, because i forgot to add a file containing this function to makefile. But this still doesnt solve linker errors related to opencv. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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