forked from floraachy/ImageKnife
62 lines
2.1 KiB
Plaintext
62 lines
2.1 KiB
Plaintext
/*
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* Copyright (C) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import taskpool from '@ohos.taskpool';
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import { UPNG } from './src/main/ets/components/3rd_party/upng/UPNG'
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import { WorkerType } from "./src/main/ets/components/imageknife/pngj/PngCallback"
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export function handler(e: WorkerType, source: ArrayBuffer, pngCallback: (value:ESObject) => void, info?: string) {
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let task: taskpool.Task | undefined = undefined
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if (info == undefined) {
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task = new taskpool.Task(printArgs, e)
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} else {
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task = new taskpool.Task(printArgs, e, source)
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}
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let val1: ESObject = taskpool.execute(task)
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pngCallback(val1)
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try {
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taskpool.cancel(task)
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} catch (e) {
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console.error("taskpool.cancel occur error:" + e)
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}
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}
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@Concurrent
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function printArgs(e: WorkerType, pngSource: ArrayBuffer, info?: string): Object | ArrayBufferLike | void {
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let a: Object | ArrayBufferLike | undefined = undefined
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let png = UPNG.decode(pngSource)
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switch (e.name) {
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case 'readPngImageAsync':
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let array: Uint8Array = png.data;
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let arrayData = array.buffer.slice(array.byteOffset, array.byteLength + array.byteOffset)
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png.data = arrayData;
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a = png
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break;
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case 'writePngWithStringAsync':
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let addInfo: string | undefined = info;
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let newPng = UPNG.encodeWithString(addInfo, UPNG.toRGBA8(png), png.width, png.height, 0)
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a = newPng
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break;
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case 'writePngAsync':
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let newPng3 = UPNG.encode(UPNG.toRGBA8(png), png.width, png.height, 0)
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a = newPng3
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break;
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default:
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break
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}
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if(a != undefined) { return a }
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}
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