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use lvc::{debug::draw_debug, decode::decode, encode::encode, Frame, Pixel, PixelValue, View, P2};
use std::io::{stdin, stdout, BufReader, BufWriter, Read, Write};
fn main() {
let size = P2 { x: 1920, y: 1080 };
let mut last_frame = Frame::new(size);
let mut debug_frame = Some(Frame::new(size));
let mut stdin = BufReader::new(stdin());
let mut stdout = BufWriter::new(stdout());
loop {
let mut frame = read_frame(&mut stdin, size);
let b = encode(&last_frame, &frame, View::all(size));
decode(&last_frame, &mut frame, View::all(size), &b);
if let Some(debug_frame) = &mut debug_frame {
debug_frame.pixels.copy_from_slice(&frame.pixels);
draw_debug(debug_frame, View::all(size), &b);
write_frame(&mut stdout, &debug_frame);
} else {
write_frame(&mut stdout, &frame);
}
last_frame = frame;
}
}
fn read_frame(inp: &mut impl Read, size: P2) -> Frame {
let mut f = Frame::new(size);
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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