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Code Issues Releases Wiki Activity

Fix JPG function referencing detached heap. Also, optimize WASM module output.

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codedread 2020-03-15 15:33:36 -07:00
parent 9dc09e22f4
commit 3ad0fa4473
5 changed files with 12 additions and 9 deletions
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2
image/webp-shim/webp-shim-module.js
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image/webp-shim/webp-shim-module.wasm
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image/webp-shim/webp-shim.js
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@ -20,8 +20,8 @@ function loadWebPShimApi() {
return loadingPromise = new Promise((resolve, reject) => {
const scriptEl = document.createElement('script');
scriptEl.onload = () => {
Module.print = str => console.log(str);
Module.printErr = str => console.error(str);
Module.print = str => console.log(`${Date.now()}: ${str}`);
Module.printErr = str => console.error(`${Date.now()}: ${str}`);
Module.onRuntimeInitialized = () => {
api = {
createWASMBuffer: Module.cwrap('create_buffer', 'number', ['number', 'number']),
@ -76,13 +76,13 @@ export function convertWebPtoJPG(webpBuffer) {
// Create a buffer of the WebP bytes that we can send into WASM-land.
const size = webpBuffer.byteLength;
const webpWASMBuffer = api.createWASMBuffer(size);
api.heap.set(webpBuffer, webpWASMBuffer);
api.module.HEAPU8.set(webpBuffer, webpWASMBuffer);
// Convert to JPG.
const jpgHandle = api.getJPGHandle(webpWASMBuffer, size);
const numJPGBytes = api.getNumBytesFromHandle(jpgHandle);
const jpgBufPtr = api.getImageBytesFromHandle(jpgHandle);
const jpgBuffer = api.heap.slice(jpgBufPtr, jpgBufPtr + numJPGBytes - 1);
const jpgBuffer = api.module.HEAPU8.slice(jpgBufPtr, jpgBufPtr + numJPGBytes - 1);
// Cleanup.
api.releaseImageHandle(jpgHandle);