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The API covers a relatively rare use case, and is far from
ideal, as it doesn't cooperate very well with HW accerlerated
rendering.
Since QVideoFrame and the QML VideoOutput item offer the option to
get a texture for the frame, it's probably better to use that
as the basis for further processing.
Change-Id: I89deb915f660312fb3a83b066a5371f5454346da
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Change-Id: Ifa888c74c397c640b19387a9ce624dfcf8269c2c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Doris Verria <doris.verria@qt.io>
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QAbstractVideoBuffer is a class that is only required inside our
implementation, so we can make it private. This change prepares
for it.
Change-Id: I4ba4542c1eab742f2fc93231e2e5063dbc5d5e94
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Task-number: QTBUG-84469
Change-Id: Id8d07836a66e4d9223341483bfe0ed251ba2806c
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
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Change-Id: I17b3650a3df5688274151c1f2c4629e4a5062028
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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From Qt 5.7 -> examples are lisenced under BSD license, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new BSD header instead of LGPL21 one
(in those files which will be under BSD)
Change-Id: I5b1b87239b21e4b57ca6c8648d69ba090d75c8a8
Reviewed-by: Jani Heikkinen <jani.heikkinen@theqtcompany.com>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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The non-OS X path also uses clGetGLContextInfoKHR when available,
instead of just blindly taking the first GPU device for the platform.
This way we get the correct OpenCL device in case the application is using an
OpenGL context on the same vendor's second GPU.
On Windows desktop OpenGL is now correctly forced and therefore there is
no need to waste time on runtime checks for ANGLE later on.
Remove the hard-coded custom pathes from the .pro file.
Also fixes error reporting on the OS X specific path.
Change-Id: I8d6ab867510d113d5135b61e66822381e81c995a
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
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Change-Id: I1ea91f93677c53322c3867db6069e4362c58cebd
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I1c6faa4f59f8eca54f01ef20941fa60161dd7872
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
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Add the QAbstractVideoFilter base class and integrate it with VideoOutput.
This can be used to perform arbitrary filtering or image processing
on the frames of a video stream of a VideoOutput element right before
the OpenGL texture is provided to the scenegraph by the video node.
This opens up the possibility to integrate computer vision
frameworks or accelerated image processing with Qt Quick applications
that display video streams using Qt Multimedia.
Conceptually it is somewhat similar to QVideoProbe, this
approach however allows modifying the frame, in real time
with tight integration to the scenegraph node, and targets
Qt Quick meaning setting up the filter and processing the results
of the computations happen completely in QML.
[ChangeLog] Added QAbstractVideoFilter that serves as a base class for QML
video filtering elements that integrate compute, vision, and image processing
frameworks with VideoOutput.
Change-Id: Ice1483f8c2daec5a43536978627a7bbb64549480
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
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