Software ISP performs performance measurement on certain part of initial
frames. Let's make this range configurable.
For this purpose, this patch introduces new configuration options
software_isp.measure.skip and software_isp.measure.number. Setting the
latter one to 0 disables the measurement.
Instead of the last frame, the class member and its configuration
specify the number of frames to measure. This is easier to use for
users and doesn't require to adjust two configuration parameters when
the number of the initially skipped frames is changed.
The patch also changes the names of the class members to make them more
accurate.
Completes software ISP TODO #7.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
On some platforms, working directly on the input buffer is very slow due
to disabled caching. This is why we copy the input buffer into standard
(cached) memory. This is an unnecessary overhead on platforms with
cached buffers.
Let's make input buffer copying configurable. The default is still
copying, as its overhead is much lower than contingent operations on
non-cached memory. Ideally, we should improve this in future to set the
default to non-copying if we can be sure under observable circumstances
that we are working with cached buffers.
Completes software ISP TODO #6.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
