TVP5150_MAX_CROP_LEFT
(rect->left + rect->width - TVP5150_MAX_CROP_LEFT) >>
rect->left + rect->width - TVP5150_MAX_CROP_LEFT);
rect->left = clamp(rect->left, 0, TVP5150_MAX_CROP_LEFT);
TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect->left,