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>
Fix the selection of the video viewfinder resolution depending
on the features provided by the camera. If the viewfinder is responsible
for encoding the video frames, the resolution of the viewfinder
and the video output must match. Otherwise only the ratio must match
and we can use a lower resolution for the viewfinder to improve
the performance of the NV12->RGB frame conversion.
Change-Id: I66ace84841a69be84f83bf9c5240cd23d96fbb76
Reviewed-by: Bernd Weimer <bweimer@rim.com>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Listen to the CAMERA_STATUS_POWERUP signal, which is sent
after standby, and trigger a restart of the viewfinder
in this case.
Change-Id: I426f23657844bb270ddfd0e4bfb35880040aa583
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Reimplement all camera related controls as they are supported by the
BB10 camera API.
Change-Id: Ie7d2258be22c1c1821489bd7074b80cff4242afa
Reviewed-by: Bernd Weimer <bweimer@rim.com>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
