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Implemented RLE ( Run-Length Encoding ) compression #8

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Implemented RLE ( Run-Length Encoding ) compression #8

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85 changes: 56 additions & 29 deletions main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -32,21 +32,39 @@ fn vec_to_u32_ne(bytes: &[u8]) -> u32 {
fn png_to_bruh(path: PathBuf) -> Result<(), std::io::Error> {
let img = image::open(&path).expect("File not found!");
let mut str = String::new();
let mut last_color = String::new();
let mut last_line = 0;
let mut run_length = 1;

for pixel in img.pixels() {
let hex_color = Rgb::from(
pixel.2 .0[0] as f32,
pixel.2 .0[1] as f32,
pixel.2 .0[2] as f32,
)
.to_css_hex_string();
.to_css_hex_string()
.replace("#", "");

if last_color == hex_color && last_line == pixel.1 {
run_length += 1;
} else {
if !last_color.is_empty() {
str.push_str(&format!("{}{:04x}", last_color, run_length));
}
last_color = hex_color;
run_length = 1;
}

if last_line != pixel.1 {
str.push_str("\n");
last_line = pixel.1;
last_color.clear();
}
str.push_str(&hex_color.replace("#", ""));
}

// Write the last run
if !last_color.is_empty() {
str.push_str(&format!("{}{:04x}", last_color, run_length));
}

if let Some(path_str) = &path.to_str() {
Expand Down Expand Up @@ -76,20 +94,36 @@ fn png_to_bruh(path: PathBuf) -> Result<(), std::io::Error> {
}

fn bruh_to_png(path: PathBuf) -> (u32, u32) {
let mut contents: Vec<u8> = fs::read(&path).expect("Couldn't read file.");
let binding: Vec<_> = contents.drain(0..8).collect();

let width = vec_to_u32_ne(&binding[0..4]);
let height = vec_to_u32_ne(&binding[4..8]);
let contents: Vec<u8> = fs::read(&path).expect("Couldn't read file.");
let (width, height) = {
let mut header = &contents[0..8];
let width = vec_to_u32_ne(&header[0..4]);
let height = vec_to_u32_ne(&header[4..8]);
(width, height)
};

let sanitized_content = String::from_utf8_lossy(&contents[8..]).replace("\n", "");
let mut pixels: Vec<u8> = Vec::with_capacity((width * height * 4) as usize);

let mut i = 0;
while i < sanitized_content.len() {
let hex_color = &sanitized_content[i..i + 6];
let run_length = u16::from_str_radix(&sanitized_content[i + 6..i + 10], 16)
.expect("Invalid run-length encoding");

let parsed_color = ("#".to_owned() + hex_color)
.parse::<CssColor>()
.expect("Failed to convert Hex to RGB");

let sanitized_content = String::from_utf8_lossy(&contents).replace("\n", "");
for _ in 0..run_length {
pixels.push(parsed_color.r);
pixels.push(parsed_color.g);
pixels.push(parsed_color.b);
pixels.push(255); // Assuming full opacity (RGBA)
}

let result: Vec<&str> = sanitized_content
.as_bytes()
.chunks(6)
.map(std::str::from_utf8)
.collect::<Result<_, _>>()
.expect("Invalid UTF-8 sequence in the input string");
i += 10; // Move to the next color+run-length pair
}

let info = ImageInfo::new(
(width as i32, height as i32),
Expand All @@ -101,24 +135,16 @@ fn bruh_to_png(path: PathBuf) -> (u32, u32) {
let mut surface = Surface::new_raster(&info, None, None).unwrap();
let canvas = surface.canvas();

for (i, color) in result.iter().enumerate() {
let hex = "#".to_owned() + color;

let parsed_color = hex
.parse::<CssColor>()
.expect("Failed to convert Hex to RGB");
for (index, chunk) in pixels.chunks(4).enumerate() {
let color4f = Color4f::new(
parsed_color.r as f32,
parsed_color.g as f32,
parsed_color.b as f32,
0.004 as f32,
chunk[0] as f32 / 255.0,
chunk[1] as f32 / 255.0,
chunk[2] as f32 / 255.0,
chunk[3] as f32 / 255.0,
);
let paint = Paint::new(color4f, None);
if i == 0 {
println!("{:?}", paint)
}
let x = i % width as usize;
let y = i / width as usize;
let x = (index as u32) % width;
let y = (index as u32) / width;

let rect = Rect::from_point_and_size((x as f32, y as f32), (1.0, 1.0));
canvas.draw_rect(rect, &paint);
Expand All @@ -133,6 +159,7 @@ fn bruh_to_png(path: PathBuf) -> (u32, u32) {
return (width, height);
}


fn main() -> Result<(), eframe::Error> {
let args: Vec<String> = env::args().collect();
let file_path: PathBuf = (&args[1]).into();
Expand Down