SYNOPSIS

int drm_rect_calc_vscale_relaxed(struct drm_rect * src, struct drm_rect * dst, int min_vscale, int max_vscale);

ARGUMENTS

src

source window rectangle

dst

destination window rectangle

min_vscale

minimum allowed vertical scaling factor

max_vscale

maximum allowed vertical scaling factor

DESCRIPTION

Calculate the vertical scaling factor as (src height) / (dst height).

If the calculated scaling factor is below min_vscale, decrease the height of rectangle dst to compensate.

If the calculated scaling factor is above max_vscale, decrease the height of rectangle src to compensate.

RETURNS

The vertical scaling factor.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

COPYRIGHT