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Implement decoder

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Surma
2020-08-21 16:31:04 +01:00
parent 2c923e5239
commit c23d1091e7
13 changed files with 209 additions and 71 deletions
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48
codecs/mozjpeg_enc/example.html
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@@ -1,48 +0,0 @@
<!doctype html>
<script src='mozjpeg_enc.js'></script>
<script>
const module = mozjpeg_enc();
async function loadImage(src) {
// Load image
const img = document.createElement('img');
img.src = src;
await new Promise(resolve => img.onload = resolve);
// Make canvas same size as image
const canvas = document.createElement('canvas');
[canvas.width, canvas.height] = [img.width, img.height];
// Draw image onto canvas
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
return ctx.getImageData(0, 0, img.width, img.height);
}
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, {
quality: 75,
baseline: false,
arithmetic: false,
progressive: true,
optimize_coding: true,
smoothing: 0,
color_space: 3,
quant_table: 3,
trellis_multipass: false,
trellis_opt_zero: false,
trellis_opt_table: false,
trellis_loops: 1,
auto_subsample: true,
chroma_subsample: 2,
separate_chroma_quality: false,
chroma_quality: 75,
});
const blob = new Blob([result], {type: 'image/jpeg'});
const blobURL = URL.createObjectURL(blob);
const img = document.createElement('img');
img.src = blobURL;
document.body.appendChild(img);
};
</script>