The avatar for @fil
Fil
Vocateur.
Public
Edited
Feb 5, 2023
1 fork
9 stars
2
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QOI = (await import("https://esm.sh/qoijs@1.0.0")).default
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test = {
const width = testcard.naturalWidth;
const height = testcard.naturalHeight;
const im = DOM.context2d(width, height, 1);
im.drawImage(testcard, 0, 0);
return { ...im.getImageData(0, 0, width, height), width, height };
}
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encoded = QOI.encode(test.data, {
width: test.width,
height: test.height,
channels: 4,
colorspace: 0
})
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image_qoi = new Blob([encoded], { type: "image/qoi" }) // download and save as testcard.qoi
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compressed = FileAttachment("testcard.qoi").arrayBuffer()
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decoded = QOI.decode(compressed)
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decoded.data.some((d, i) => d !== test.data[i])
? md`🪳 **failure**!`
: md`👍 it works!`
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testcard = FileAttachment("testcard.png").image()
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