Function bitblt

pub unsafe fn bitblt(
    dstp: *mut c_void,
    dst_stride: isize,
    srcp: *const c_void,
    src_stride: isize,
    row_size: usize,
    height: usize,
)

Copies bytes from one plane to another. Basically, it is memcpy in a loop.

Safety

srcp and dstp must be valid and not overlapping