Further speed improvements

- Store Emscripten cache inside node_modules/.em_cache. Docker image ships without LTO libs, so Emscripten has to rebuild stdlibs on every build otherwise. - Merge webp_enc + webp_dec build scripts. Core libwebp library is same in both cases, so there's no point in storing and building two copies of it.
2025-11-14 01:37:26 +00:00 · 2020-05-11 22:19:28 +01:00
parent 1542bfb7fd
commit de543b3206
22 changed files with 26 additions and 1228 deletions
--- a/codecs/webp/dec/example.html
+++ b/codecs/webp/dec/example.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<script src='webp_dec.js'></script>
+<script>
+  const Module = webp_dec();
+
+  async function loadFile(src) {
+    const resp = await fetch(src);
+    return await resp.arrayBuffer();
+  }
+
+  Module.onRuntimeInitialized = async _ => {
+    console.log('Version:', Module.version().toString(16));
+    const image = await loadFile('../../example.webp');
+    const result = Module.decode(image);
+    const imageData = new ImageData(new Uint8ClampedArray(result.buffer), result.width, result.height);
+    Module.free_result();
+    const canvas = document.createElement('canvas');
+    canvas.width = result.width;
+    canvas.height = result.height;
+    document.body.appendChild(canvas);
+    const ctx = canvas.getContext('2d');
+    ctx.putImageData(imageData, 0, 0);
+  };
+</script>