Adapt the frame size dynamically, since mmrenderer resizes
the source viewport of the native video window at runtime on
some hardware platforms.
Task-number: QTBUG-31534
Change-Id: Ie637d7a80697175dacb454535fbe251b2c7a6809
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Since the conversion from NV12 to RGB on the CPU does not scale
for larger photo/video resolutions, this patch uses a different
approach. It uses the low-level screen API to grab screenshots
of the native viewfinder window and provides them as QImage to
the QAbstractVideoSurface. Even for large resolutions this
is quite performant.
Change-Id: I59a7cbe6850b3b07575ea10026f3180cfd22e935
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
