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Decoder works

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This commit is contained in:
Surma
2021-05-14 15:58:38 +01:00
parent 189d196b2b
commit 1527b1431c
4 changed files with 37 additions and 36 deletions
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35
codecs/basis/asdf.html
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@@ -1,35 +0,0 @@
<!doctype html>
<input type="file" id="file">
<button id="go">Go</button>
<script type="module">
import encFactory from "./enc/basis_enc.js";
import decFactory from "./dec/basis_dec.js";
const {file, go} = document.all;
async function main() {
const encoder = await encFactory();
const bitmap = await createImageBitmap(file.files[0]);
const canvas = new OffscreenCanvas(bitmap.width, bitmap.height);
const ctx2 = canvas.getContext("2d");
ctx2.drawImage(bitmap, 0, 0);
const imgData = ctx2.getImageData(0, 0, canvas.width, canvas.height);
const result = encoder.encode(imgData.data, imgData.width, imgData.height);
const decoder = await decFactory();
console.log({result});
const resultImgData = decoder.decode(result);
console.log({resultImgData});
const cvs = document.createElement("canvas");
cvs.width = resultImgData.width;
cvs.height = resultImgData.height;
const ctx = cvs.getContext("2d");
ctx.putImageData(resultImgData, 0, 0);
document.body.append(cvs);
// const blob = new File([result], "lol.basis");
// const u = URL.createObjectURL(blob);
// const a = document.createElement("a")
// a.download = "lol.basis";
// a.href = u;
// a.click();
}
go.onclick = main;
</script>

3
src/client/lazy-app/Compress/index.tsx
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@@ -97,6 +97,9 @@ async function decodeImage(
try {
if (!canDecode) {
if (mimeType === 'image/basisu') {
return await workerBridge.basisDecode(signal, blob);
}
if (mimeType === 'image/avif') {
return await workerBridge.avifDecode(signal, blob);
}

2
src/client/lazy-app/util/index.ts
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@@ -152,7 +152,7 @@ const magicNumberMapInput = [
[/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/, 'image/avif'],
[/^\xff\x0a/, 'image/jxl'],
[/^\x00\x00\x00\x0cJXL \x0d\x0a\x87\x0a/, 'image/jxl'],
[/^Bs\x10/, 'image/basisu'],
[/^sB/, 'image/basisu'],
] as const;
export type ImageMimeTypes = typeof magicNumberMapInput[number][1];

33
src/features/decoders/basis/worker/basisDecode.ts Normal file
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@@ -0,0 +1,33 @@
/**
* Copyright 2020 Google Inc. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type { BasisModule } from 'codecs/basis/dec/basis_dec';
import wasmUrl from 'url:codecs/basis/dec/basis_dec.wasm';
import { initEmscriptenModule, blobToArrayBuffer } from 'features/worker-utils';
let emscriptenModule: Promise<BasisModule>;
export default async function decode(blob: Blob): Promise<ImageData> {
if (!emscriptenModule) {
const decoder = await import('codecs/basis/dec/basis_dec');
emscriptenModule = initEmscriptenModule(decoder.default, wasmUrl);
}
const [module, data] = await Promise.all([
emscriptenModule,
blobToArrayBuffer(blob),
]);
const result = module.decode(data);
if (!result) throw new Error('Decoding error');
return result;
}