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use lvc::{diff::{diff, fast_diff}, Frame, Pixel, Ref, View, P2, PixelValue};
use std::{
io::{stdin, stdout, BufReader, BufWriter, Read, Write},
time::Instant,
};
fn main() {
let size = P2 { x: 1920, y: 1080 };
// let frame1 = read_frame(size);
// let frame2 = read_frame(size);
// encode(&frame1, &frame2, View::all(size));
let mut last_frame = Frame {
pixels: vec![Pixel::default(); size.area()],
size,
};
let mut stdin = BufReader::new(stdin());
let mut stdout = BufWriter::new(stdout());
loop {
let frame = read_frame(&mut stdin, size);
let t1 = Instant::now();
let d = diff([&last_frame, &frame], View::all(size), Ref::default());
let t2 = Instant::now();
eprintln!("diff {:?} {d}", t2 - t1);
let t1 = Instant::now();
let d = fast_diff([&last_frame, &frame], View::all(size), Ref::default());
let t2 = Instant::now();
eprintln!("diff2 {:?} {d}", t2 - t1);
write_frame(&mut stdout, &frame);
last_frame = frame;
}
}
fn read_frame(inp: &mut impl Read, size: P2) -> Frame {
let mut f = Frame {
size,
pixels: vec![Pixel::default(); size.area()],
};
for y in 0..size.y {
for x in 0..size.x {
let mut cc = [0u8; 3];
inp.read_exact(&mut cc).unwrap();
f[P2 { x, y }] = Pixel {
r: cc[0] as PixelValue,
g: cc[1] as PixelValue,
b: cc[2] as PixelValue,
};
}
}
f
}
fn write_frame(out: &mut impl Write, frame: &Frame) {
for y in 0..frame.size.y {
for x in 0..frame.size.x {
let p = frame[P2 { x, y }];
let mut cc = [0u8; 3];
cc[0] = p.r as u8;
cc[1] = p.g as u8;
cc[2] = p.b as u8;
out.write_all(&mut cc).unwrap();
}
}
}
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