initial commit

src/codec/image/png.rs

@@ -0,0 +1,32 @@
+use alloc::format;
+use png_decoder::DecodeError;
+
+use crate::{color::Color, error::RenderError};
+
+use super::{ImageData, ImageDecoder};
+
+pub struct PngDecoder;
+
+impl ImageDecoder for PngDecoder {
+    fn decode(&self, bytes: &[u8]) -> Result<super::ImageData, RenderError> {
+        let (header, rgba_pixels) =
+            png_decoder::decode(bytes).map_err(|err| RenderError::from(err))?;
+
+        let pixels = rgba_pixels
+            .chunks(4)
+            .map(|chunk| Color::new(chunk[0].into(), chunk[1].into(), chunk[2].into()))
+            .collect();
+
+        Ok(ImageData {
+            width: header.width as usize,
+            height: header.height as usize,
+            pixels,
+        })
+    }
+}
+
+impl From<DecodeError> for RenderError {
+    fn from(value: DecodeError) -> Self {
+        RenderError::new("PngDecoder", &format!("{:?}", value))
+    }
+}