1/* 2 * Copyright (c) 2024 - 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import type { ImageData } from '../../../model/Interfaces'; 17import { readInt32LE, readUInt32LE, toUTF8String } from '../BytesUtils'; 18 19export const BMP: ImageData = { 20 validate: (input) => toUTF8String(input, 0, 2) === 'BM', 21 calculate: (input) => ({ 22 height: Math.abs(readInt32LE(input, 22)), 23 width: readUInt32LE(input, 18), 24 }), 25};