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src/util/processAvifImage.js

@@ -10,16 +10,37 @@ export default async function processAvifImage(inputBuffer) {
     ? inputBuffer
     : Buffer.from(inputBuffer);
 
+  const meta = await sharp(input).metadata();
+  const w = meta.width ?? 0;
+  const h = meta.height ?? 0;
+  const isAvif =
+    meta.format === 'avif' ||
+    (meta.format === 'heif' && meta.compression === 'av1');
+  const useOriginalFull =
+    isAvif && w > 0 && h > 0 && w <= FULL_MAX && h <= FULL_MAX;
+
+  if (!useOriginalFull) {
+    console.log(
+      `processAvifImage: converting full image (format=${meta.format ?? 'unknown'}, ${w}×${h}, avif=${isAvif})`,
+    );
+  }
+
+  const thumbPipeline = sharp(input)
+    .resize(THUMB_MAX, THUMB_MAX, { fit: 'inside', withoutEnlargement: true });
+
   const [full, thumb, thumbRgba] = await Promise.all([
-    sharp(input)
-      .resize(FULL_MAX, FULL_MAX, { fit: 'inside', withoutEnlargement: true })
-      .avif({ effort: 4 })
-      .toBuffer({ resolveWithObject: true }),
-    sharp(input)
-      .resize(THUMB_MAX, THUMB_MAX, { fit: 'inside', withoutEnlargement: true })
-      .avif({ effort: 4 })
-      .toBuffer({ resolveWithObject: true }),
-    sharp(input)
+    useOriginalFull
+      ? Promise.resolve({
+          info: { width: w, height: h },
+          data: input,
+        })
+      : sharp(input)
+          .resize(FULL_MAX, FULL_MAX, { fit: 'inside', withoutEnlargement: true })
+          .avif({ effort: 4 })
+          .toBuffer({ resolveWithObject: true }),
+    thumbPipeline.clone().avif({ effort: 4 }).toBuffer({ resolveWithObject: true }),
+    thumbPipeline
+      .clone()
       .resize(100, 100, { fit: 'inside', withoutEnlargement: true })
       .ensureAlpha()
       .raw()