+ }*/
+ unsafe {
+ let hw = (w / 2) as isize;
+ let hh = (h / 2) as isize;
+ let mut band0 = src.as_ptr();
+ let mut band1 = band0.offset(hw);
+ let mut band2 = band0.offset(((h / 2) * sstride) as isize);
+ let mut band3 = band2.offset(hw);
+ let mut dst0 = dst.as_mut_ptr();
+ let mut dst1 = dst0.offset(dstride as isize);
+ for _ in 0..hh {
+ let mut b0_ptr = band0;
+ let mut b1_ptr = band1;
+ let mut b2_ptr = band2;
+ let mut b3_ptr = band3;
+ let mut d0_ptr = dst0;
+ let mut d1_ptr = dst1;
+ for _ in 0..hw {
+ let p0 = *b0_ptr as i32;
+ let p1 = *b1_ptr as i32;
+ let p2 = *b2_ptr as i32;
+ let p3 = *b3_ptr as i32;
+ let s0 = p0.wrapping_add(p2);
+ let s1 = p1.wrapping_add(p3);
+ let d0 = p0.wrapping_sub(p2);
+ let d1 = p1.wrapping_sub(p3);
+ let o0 = s0.wrapping_add(s1).wrapping_add(2);
+ let o1 = d0.wrapping_add(d1).wrapping_add(2);
+ let o2 = s0.wrapping_sub(s1).wrapping_add(2);
+ let o3 = d0.wrapping_sub(d1).wrapping_add(2);
+ *d0_ptr.offset(0) = mclip8((o0 >> 2).wrapping_add(128));
+ *d0_ptr.offset(1) = mclip8((o1 >> 2).wrapping_add(128));
+ *d1_ptr.offset(0) = mclip8((o2 >> 2).wrapping_add(128));
+ *d1_ptr.offset(1) = mclip8((o3 >> 2).wrapping_add(128));
+ b0_ptr = b0_ptr.offset(1);
+ b1_ptr = b1_ptr.offset(1);
+ b2_ptr = b2_ptr.offset(1);
+ b3_ptr = b3_ptr.offset(1);
+ d0_ptr = d0_ptr.offset(2);
+ d1_ptr = d1_ptr.offset(2);
+ }
+ band0 = band0.offset(sstride as isize);
+ band1 = band1.offset(sstride as isize);
+ band2 = band2.offset(sstride as isize);
+ band3 = band3.offset(sstride as isize);
+ dst0 = dst0.offset((dstride * 2) as isize);
+ dst1 = dst1.offset((dstride * 2) as isize);
+ }