webp_dev::sys::webp

Function webp_picture_crop

Source 
pub unsafe fn webp_picture_crop(
    picture: *mut WebPPicture,
    left: c_int,
    top: c_int,
    width: c_int,
    height: c_int,
) -> c_int
Expand description

self-crops a picture to the rectangle defined by top/left/width/height.

Returns false in case of memory allocation error, or if the rectangle is outside of the source picture. The rectangle for the view is defined by the top-left corner pixel coordinates (left, top) as well as its width and height. This rectangle must be fully be comprised inside the ‘src’ source picture. If the source picture uses the YUV420 colorspace, the top and left coordinates will be snapped to even values.