[Buildroot] [PATCH v6 15/16] package/opencv: add opengl support
Yann E. MORIN
yann.morin.1998 at free.fr
Sat Jun 27 07:55:32 UTC 2015
Samuel, All,
On 2015-06-25 21:59 +0200, Samuel Martin spake thusly:
> In OpenCV, 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 visible when Qt5 support is selected.
>
> Signed-off-by: Samuel Martin <s.martin49 at gmail.com>
>
> ---
> changes v5->v6:
> - update comments (Yann)
>
> changes v4->v5:
> - new patch
> ---
> package/opencv/Config.in | 16 ++++++++++++++++
> package/opencv/opencv.mk | 7 +++++++
> 2 files changed, 23 insertions(+)
>
> diff --git a/package/opencv/Config.in b/package/opencv/Config.in
> index b738f71..b80c9fa 100644
> --- a/package/opencv/Config.in
> +++ b/package/opencv/Config.in
> @@ -311,6 +311,22 @@ config BR2_PACKAGE_OPENCV_WITH_JPEG
> help
> Use shared libjpeg from the target system.
>
> +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 Qt5 and an OpenGL provider"
"But I do have Qt5 enabled and a GL provider set" would say a dumb user
like me with Qt5 enabled and mesa3d (with DRI driver), but with the
opencv toolkit set to gtk2.
What you meant was: "opengl needs Qt5 as toolkit and an openGL proivder"
But that's not much better either.
What would really make it obvious is:
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
No, I did not forget to negate BR2_PACKAGE_OPENCV_WITH_QT5, because what
I suggest is that opengl support be treated as a sub-option of Qt5, so
be the comment.
Regards,
Yann E. MORIN.
> + depends on !BR2_PACKAGE_OPENCV_WITH_QT5 || \
> + !BR2_PACKAGE_QT5_GL_AVAILABLE || \
> + !BR2_PACKAGE_HAS_LIBGL
> +
> config BR2_PACKAGE_OPENCV_WITH_PNG
> bool "png support"
> select BR2_PACKAGE_LIBPNG
> diff --git a/package/opencv/opencv.mk b/package/opencv/opencv.mk
> index 986e7b4..61a3ccd 100644
> --- a/package/opencv/opencv.mk
> +++ b/package/opencv/opencv.mk
> @@ -264,6 +264,13 @@ else
> OPENCV_CONF_OPTS += -DWITH_JPEG=OFF
> endif
>
> +ifeq ($(BR2_PACKAGE_OPENCV_WITH_OPENGL),y)
> +OPENCV_CONF_OPTS += -DWITH_OPENGL=ON
> +OPENCV_DEPENDENCIES += libgl qt5base
> +else
> +OPENCV_CONF_OPTS += -DWITH_OPENGL=OFF
> +endif
> +
> OPENCV_CONF_OPTS += -DWITH_OPENMP=$(if $(BR2_GCC_ENABLE_OPENMP),ON,OFF)
>
> ifeq ($(BR2_PACKAGE_OPENCV_WITH_PNG),y)
> --
> 2.4.4
>
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot
--
.-----------------.--------------------.------------------.--------------------.
| Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
| +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
'------------------------------^-------^------------------^--------------------'
More information about the buildroot
mailing list