Name reduced JPEG estimate API

crates/images/src/jpeg.rs

@@ -67,7 +67,7 @@ pub(crate) const MAX_SHRINK: u8 = 3;
 
 /// Output size of a JPEG reduction without decoding pixels. `None` when the reduced decoder
 /// cannot handle the JPEG, including its full-size resource limits.
-pub(crate) fn reduced_size(bytes: &[u8], shrink: u8) -> Option<(u32, u32, usize)> {
+pub(crate) fn reduced_estimate(bytes: &[u8], shrink: u8) -> Option<(u32, u32, usize)> {
     use jpeg_decoder::{CodingProcess, PixelFormat};
     if !bytes.starts_with(&[0xFF, 0xD8]) || shrink == 0 || shrink > MAX_SHRINK {
         return None;

crates/images/src/lib.rs

@@ -513,8 +513,8 @@ pub fn decode_rgba_reduced(bytes: &[u8], shrink: u8) -> Option<image::RgbaImage>
 /// Dimensions and estimated peak bytes for a JPEG decoded at `1/2^shrink`, without decoding its
 /// pixels. Progressive JPEG coefficient buffers are included. `None` when the reduced decoder
 /// cannot handle the image.
-pub fn reduced_jpeg_size(bytes: &[u8], shrink: u8) -> Option<(u32, u32, usize)> {
-    jpeg::reduced_size(bytes, shrink)
+pub fn reduced_jpeg_estimate(bytes: &[u8], shrink: u8) -> Option<(u32, u32, usize)> {
+    jpeg::reduced_estimate(bytes, shrink)
 }
 
 /// False when `bytes` is a WebP whose `ICCP` chunk declares more bytes than the file holds or than

crates/render/src/images.rs

@@ -200,7 +200,7 @@ fn reduced_estimates(wants: &[Want]) -> Option<(usize, usize)> {
             return None;
         }
         let shrink = level.min(usize::from(designcraft_images::MAX_REDUCED_SHRINK));
-        let (_, _, decode_peak) = designcraft_images::reduced_jpeg_size(&w.bytes, shrink as u8)?;
+        let (_, _, decode_peak) = designcraft_images::reduced_jpeg_estimate(&w.bytes, shrink as u8)?;
         for cached in levels.iter_mut().take(level + 1).skip(shrink) {
             *cached = true;
         }