Comments (1)
Got it to work :)
I had to convert the raw image from an ArrayBuffer
to a Uint8ClampedArray
.
The Uint8ClampedArray
can be passed to the ImageData
constructor.
That result can be rendered on any cancas:
const heic = require("heic-decode");
const { Buffer } = require("buffer");
const input = document.createElement("input");
input.type = "file";
document.body.appendChild(input);
input.addEventListener("change", function () {
const file = input.files[0];
const reader = new FileReader();
reader.readAsArrayBuffer(file);
reader.onload = async function (result) {
const decodedImage = await heic.decode({ buffer: Buffer.from(reader.result) });
const canvas = document.createElement("canvas");
document.body.appendChild(canvas);
const ctx = canvas.getContext("2d");
const imageData = new ImageData(
new Uint8ClampedArray(decodedImage.data),
decodedImage.width,
decodedImage.height
);
ctx.putImageData(imageData, 0, 0);
};
});
Here is a live example:
https://codesandbox.io/s/heic-decoding-example-r4ltlb?file=/src/index.js
from heic-decode.
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from heic-decode.