Reverted problematic changes, changed to

cz/Cargo.toml

@@ -11,4 +11,4 @@ A encoder/decoder for CZ# image files used in
 byteorder = "1.5.0"
 thiserror = "1.0.59"
 image = {version = "0.25.1", default-features = false}
-quantizr = "1.4.2"
+imagequant = "4.3.1"

cz/src/color.rs

@@ -4,15 +4,28 @@ use std::{
 };
 
 use byteorder::ReadBytesExt;
-use image::Rgba;
-use quantizr::Image;
+use imagequant::Attributes;
 
 use crate::common::{CommonHeader, CzError};
 
+#[derive(Debug)]
+pub struct Rgba(pub [u8; 4]);
+
+impl From<[u8; 4]> for Rgba {
+    fn from(value: [u8; 4]) -> Self {
+        Self([value[0], value[1], value[2], value[3]])
+    }
+}
+
+#[derive(Debug)]
+pub struct Palette {
+    pub colors: Vec<Rgba>
+}
+
 pub fn get_palette<T: Seek + ReadBytesExt + Read>(
     input: &mut T,
     num_colors: usize,
-) -> Result<Vec<Rgba<u8>>, CzError> {
+) -> Result<Palette, CzError> {
     let mut colormap = Vec::with_capacity(num_colors);
     let mut rgba_buf = [0u8; 4];
 
@@ -21,16 +34,16 @@ pub fn get_palette<T: Seek + ReadBytesExt + Read>(
         colormap.push(rgba_buf.into());
     }
 
-    Ok(colormap)
+    Ok(Palette { colors: colormap })
 }
 
 /// Take a bitmap of indicies, and map a given palette to it, returning a new
 /// RGBA bitmap
-pub fn apply_palette(input: &[u8], palette: &[Rgba<u8>]) -> Result<Vec<u8>, CzError> {
+pub fn apply_palette(input: &[u8], palette: &Palette) -> Result<Vec<u8>, CzError> {
     let mut output_map = Vec::new();
 
     for byte in input.iter() {
-        let color = palette.get(*byte as usize);
+        let color = palette.colors.get(*byte as usize);
         if let Some(color) = color {
             output_map.extend_from_slice(&color.0);
         } else {
@@ -41,7 +54,7 @@ pub fn apply_palette(input: &[u8], palette: &[Rgba<u8>]) -> Result<Vec<u8>, CzEr
     Ok(output_map)
 }
 
-pub fn rgba_to_indexed(input: &[u8], palette: &[Rgba<u8>]) -> Result<Vec<u8>, CzError> {
+pub fn rgba_to_indexed(input: &[u8], palette: &Palette) -> Result<Vec<u8>, CzError> {
     let mut output_map = Vec::new();
     let mut cache = HashMap::new();
 
@@ -49,7 +62,7 @@ pub fn rgba_to_indexed(input: &[u8], palette: &[Rgba<u8>]) -> Result<Vec<u8>, Cz
         let value = match cache.get(rgba) {
             Some(val) => *val,
             None => {
-                let value = palette.iter().position(|e| e.0 == rgba).unwrap_or_default() as u8;
+                let value = palette.colors.iter().position(|e| e.0 == rgba).unwrap_or_default() as u8;
                 cache.insert(rgba, value);
                 value
             }
@@ -64,28 +77,32 @@ pub fn rgba_to_indexed(input: &[u8], palette: &[Rgba<u8>]) -> Result<Vec<u8>, Cz
 pub fn indexed_gen_palette(
     input: &[u8],
     header: &CommonHeader,
-) -> Result<(Vec<u8>, Vec<image::Rgba<u8>>), CzError> {
+) -> Result<(Vec<u8>, Vec<Rgba>), CzError> {
     let size = (header.width() as u32 * header.height() as u32) * 4;
 
-    let mut buf = vec![0; size as usize];
+    let mut buf: Vec<u8> = vec![0; size as usize];
     buf[..input.len()].copy_from_slice(input);
+    let buf: Vec<imagequant::RGBA> = buf
+        .windows(4)
+        .step_by(4)
+        .map(|c| imagequant::RGBA::new(c[0], c[1], c[2], c[3]))
+        .collect();
 
-    let image = Image::new(&buf, header.width() as usize, header.height() as usize).unwrap();
+    let mut quant = Attributes::new();
+    quant.set_speed(1).unwrap();
 
-    let mut opts = quantizr::Options::default();
-    opts.set_max_colors(1 << header.depth()).unwrap();
+    let mut image = quant.new_image(
+        buf,
+        header.width() as usize,
+        header.height() as usize,
+        0.0
+    ).unwrap();
 
-    let mut result = quantizr::QuantizeResult::quantize(&image, &opts);
-    result.set_dithering_level(0.5).unwrap();
+    let mut quant_result = quant.quantize(&mut image).unwrap();
 
-    let mut indicies = vec![0u8; header.width() as usize * header.height() as usize];
-    result.remap_image(&image, indicies.as_mut_slice()).unwrap();
-
-    let palette = result.get_palette();
+    let (palette, indicies) = quant_result.remapped(&mut image).unwrap();
 
     let gen_palette = palette
-        .entries
-        .as_slice()
         .iter()
         .map(|c| Rgba([c.r, c.g, c.b, c.a]))
         .collect();
@@ -93,7 +110,7 @@ pub fn indexed_gen_palette(
     Ok((indicies, gen_palette))
 }
 
-pub fn _default_palette() -> Vec<Rgba<u8>> {
+pub fn _default_palette() -> Vec<Rgba> {
     let mut colormap = Vec::new();
 
     for i in 0..=0xFF {

cz/src/dynamic.rs

@@ -1,5 +1,4 @@
 use byteorder::ReadBytesExt;
-use image::Rgba;
 use std::{
     fs::File,
     io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write},
@@ -7,7 +6,7 @@ use std::{
 };
 
 use crate::{
-    color::{apply_palette, get_palette, indexed_gen_palette, rgba_to_indexed},
+    color::{apply_palette, get_palette, indexed_gen_palette, rgba_to_indexed, Palette},
     common::{CommonHeader, CzError, CzVersion, ExtendedHeader},
     formats::{cz0, cz1, cz2, cz3, cz4},
 };
@@ -18,7 +17,7 @@ use crate::{
 pub struct DynamicCz {
     header_common: CommonHeader,
     header_extended: Option<ExtendedHeader>,
-    palette: Option<Vec<Rgba<u8>>>,
+    palette: Option<Palette>,
     bitmap: Vec<u8>,
 }
 
@@ -136,7 +135,7 @@ impl DynamicCz {
                     // Use the existing palette to palette the image
                     output_bitmap = rgba_to_indexed(self.bitmap(), pal)?;
 
-                    for rgba in pal {
+                    for rgba in &pal.colors {
                         out_file.write_all(&rgba.0)?;
                     }
                 } else {
@@ -258,13 +257,13 @@ impl DynamicCz {
 
     /// Retrieve a reference to the palette if it exists, otherwise [`None`]
     /// is returned
-    pub fn palette(&self) -> &Option<Vec<Rgba<u8>>> {
+    pub fn palette(&self) -> &Option<Palette> {
         &self.palette
     }
 
     /// Retrieve a mutable reference to the palette if it exists, otherwise
     /// [`None`] is returned
-    pub fn palette_mut(&mut self) -> &mut Option<Vec<Rgba<u8>>> {
+    pub fn palette_mut(&mut self) -> &mut Option<Palette> {
         &mut self.palette
     }