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package/opencv: add opengl support

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In OpenCV, OpenGL is only used by highgui module.

OpenGL support is done using extensions from 3rd party framework: either
Qt5OpenGL with Qt5 (with GL support only, not GLES); or gtkglext (which
is not available in Buildroot) with gtk2

So, make OpenGL knob a sub-option of the Qt5 support option.

Note: we enclose both the GUI toolkit choice and the GL option in an
if-block, so that the GL option gets properly indented; having it
depend on WITH_QT5 is not enough, because it does not directly follow
it, so kconfig would not consider it for indenting.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
[yann.morin.1998@free.fr: tweak commit log about the if-block]
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Samuel Martin 2015-07-05 23:54:48 +02:00 committed by Thomas Petazzoni
parent 70c7d46893
commit e5cbe66571
2 changed files with 28 additions and 1 deletions
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22
package/opencv/Config.in
View File

@ -52,9 +52,10 @@ config BR2_PACKAGE_OPENCV_LIB_HIGHGUI
Include opencv_highgui (high-level gui and media i/o) module into the
OpenCV build.
if BR2_PACKAGE_OPENCV_LIB_HIGHGUI
choice
prompt "gui toolkit"
depends on BR2_PACKAGE_OPENCV_LIB_HIGHGUI
help
GUI toolkit to be used by the opencv_highgui module.
@ -108,6 +109,25 @@ comment "qt5 support needs qt5"
endchoice
config BR2_PACKAGE_OPENCV_WITH_OPENGL
bool "opengl support"
# OpenGL support done using Qt5OpenGL, so depends on WITH_QT5
depends on BR2_PACKAGE_OPENCV_WITH_QT5
# OpenGL support requires Qt5OpenGL with GL support, not GLES
depends on BR2_PACKAGE_QT5_GL_AVAILABLE
depends on BR2_PACKAGE_HAS_LIBGL
select BR2_PACKAGE_QT5BASE_OPENGL
help
Enable OpenGL for UI.
comment "opengl support needs an OpenGL provider"
depends on BR2_PACKAGE_OPENCV_WITH_QT5
depends on !BR2_PACKAGE_QT5_GL_AVAILABLE || \
!BR2_PACKAGE_HAS_LIBGL
endif # BR2_PACKAGE_OPENCV_LIB_HIGHGUI
config BR2_PACKAGE_OPENCV_LIB_IMGCODECS
bool "imgcodecs"
select BR2_PACKAGE_OPENCV_LIB_IMGPROC

7
package/opencv/opencv.mk
View File

@ -264,6 +264,13 @@ else
OPENCV_CONF_OPTS += -DWITH_JPEG=OFF
endif
ifeq ($(BR2_PACKAGE_OPENCV_WITH_OPENGL),y)
OPENCV_CONF_OPTS += -DWITH_OPENGL=ON
OPENCV_DEPENDENCIES += libgl
else
OPENCV_CONF_OPTS += -DWITH_OPENGL=OFF
endif
OPENCV_CONF_OPTS += -DWITH_OPENMP=$(if $(BR2_GCC_ENABLE_OPENMP),ON,OFF)
ifeq ($(BR2_PACKAGE_OPENCV_WITH_PNG),y)