use crate::{Frame, Pixel, Ref, View, P2}; // 4ms pub fn diff([frame1, frame2]: [&Frame; 2], view: View, rp: Ref) -> u32 { let mut k = 0; for y in view.a.y..view.b.y { for x in view.a.x..view.b.x { let pos = P2 { x, y }; let p1 = frame1[pos + rp.pos_off] + rp.color_off; let p2 = frame2[pos]; k += pixel_diff(p1, p2) } } k } #[inline(always)] pub fn pixel_diff(p1: Pixel, p2: Pixel) -> u32 { p1.r.abs_diff(p2.r) as u32 + p1.g.abs_diff(p2.g) as u32 + p1.b.abs_diff(p2.b) as u32 } // pub fn diff([frame1, frame2]: [&Frame; 2], view: View, rp: Ref) -> u32 { // let mut k = 0; // for y in view.a.y..view.b.y { // let s1_ystart = (y * frame1.size.x) as usize; // let s2_ystart = ((y + rp.pos_off.y) * frame1.size.x + rp.pos_off.x) as usize; // let s1 = &frame1.pixels[s1_ystart + view.a.x as usize..s1_ystart + view.b.x as usize]; // let s2 = &frame2.pixels[s2_ystart + view.a.x as usize..s2_ystart + view.b.x as usize]; // let s1 = unsafe { std::mem::transmute::<_, &[i16]>(s1) }; // let s2 = unsafe { std::mem::transmute::<_, &[i16]>(s2) }; // k += s1 // .iter() // .zip(s2.iter()) // .map(|(a, b)| a.abs_diff(*b) as u32) // .sum::() // } // k // } // pub fn fast_diff([frame1, frame2]: [&Frame; 2], view: View, rp: Ref) -> u32 { // assert!(view.size().x % 5 == 0); // let mut diff_lanes = i32x16::from_array([0; 16]); // let mut k1 = [0; 32]; // let mut k2 = [0; 32]; // let next_line = frame1.size.x as usize - view.size().x as usize; // let index_start = view.a.x as usize + view.a.y as usize * frame1.size.x as usize; // let index_end = view.b.x as usize + (view.b.y as usize - 1) * frame1.size.x as usize; // let mut i = index_start; // let mut x = view.a.x; // while i < index_end { // let f1: &[u8] = // unsafe { std::slice::from_raw_parts(frame1.pixels[sl_start..].as_ptr() as *mut u8, sl_size) }; // let f2: &[u8] = // unsafe { std::slice::from_raw_parts(frame2.pixels[sl_start..].as_ptr() as *mut u8, sl_size) }; // for i in 0..15 { // k1[i] = f1[i] as i32; // k2[i] = f2[i] as i32; // } // // for j in 0..5 { // // let j3 = j * 3; // // k1[j3] = frame1.pixels[i + j].r as i32; // // k2[j3] = frame2.pixels[i + j].r as i32; // // k1[j3 + 1] = frame1.pixels[i + j].g as i32; // // k2[j3 + 1] = frame2.pixels[i + j].g as i32; // // k1[j3 + 2] = frame1.pixels[i + j].b as i32; // // k2[j3 + 2] = frame2.pixels[i + j].b as i32; // // } // let pl1 = i16x32::from_array(k1); // let pl2 = i16x32::from_array(k2); // diff_lanes += (pl1 - pl2).abs(); // i += 5; // x += 5; // if x > view.b.x { // i += next_line; // x = view.a.x // } // } // return diff_lanes.reduce_sum() as u32; // } // pub fn fast_diff([frame1, frame2]: [&Frame; 2], view: View, rp: Ref) -> u32 { // let mut diff_lanes = i32x16::from_array([0; 16]); // let mut k1 = [0; 16]; // let mut k2 = [0; 16]; // let next_line = frame1.size.x as usize - view.size().x as usize; // let index_start = view.a.x as usize + view.a.y as usize * frame1.size.x as usize; // let index_end = view.b.x as usize + (view.b.y as usize - 1) * frame1.size.x as usize; // let mut i = index_start; // let mut x = view.a.x; // let mut kfill = 0; // while i < index_end { // k1[kfill] = frame1.pixels[i].r as i32; // k2[kfill] = frame2.pixels[i].r as i32; // kfill += 1; // k1[kfill] = frame1.pixels[i].g as i32; // k2[kfill] = frame2.pixels[i].g as i32; // kfill += 1; // k1[kfill] = frame1.pixels[i].b as i32; // k2[kfill] = frame2.pixels[i].b as i32; // kfill += 1; // i += 1; // x += 1; // if x > view.b.x { // i += next_line; // x = view.a.x // } // if kfill == 15 { // let pl1 = i32x16::from_array(k1); // let pl2 = i32x16::from_array(k2); // diff_lanes += (pl1 - pl2).abs(); // kfill = 0; // } // } // return diff_lanes.reduce_sum() as u32; // }