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Attempt at threads for webp encoder

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Surma
2018-11-01 22:36:38 +00:00
parent 43def798e1
commit 30e78e8ab7
6 changed files with 209 additions and 29 deletions
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17
codecs/webp_enc/example.html
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@@ -1,7 +1,7 @@
<!doctype html>
<script src='webp_enc.js'></script>
<script>
const module = webp_enc();
// const Module = webp_enc();
async function loadImage(src) {
// Load image
@@ -17,10 +17,11 @@
return ctx.getImageData(0, 0, img.width, img.height);
}
module.onRuntimeInitialized = async _ => {
console.log('Version:', module.version().toString(16));
Module.onRuntimeInitialized = async _ => {
console.log('Version:', Module.version().toString(16));
const image = await loadImage('../example.png');
const result = module.encode(image.data, image.width, image.height, {
let start = performance.now();
const result = Module.encode(image.data, image.width, image.height, {
quality: 75,
target_size: 0,
target_PSNR: 0,
@@ -43,16 +44,18 @@
exact: 0,
image_hint: 0,
emulate_jpeg_size: 0,
thread_level: 0,
thread_level: 1,
low_memory: 0,
near_lossless: 100,
use_delta_palette: 0,
use_sharp_yuv: 0,
});
let stop = performance.now();
console.log('size', result.length);
const blob = new Blob([result], {type: 'image/webp'});
console.log('time', stop - start);
const blob = new Blob([new Uint8Array(result)], {type: 'image/webp'});
module.free_result();
Module.free_result();
const blobURL = URL.createObjectURL(blob);
const img = document.createElement('img');