/*
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* Copyright 2009 ZXing authors
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*
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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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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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/*namespace com.google.zxing {*/
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import './InvertedLuminanceSource'; // required because of circular dependencies between LuminanceSource and InvertedLuminanceSource
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import InvertedLuminanceSource from './InvertedLuminanceSource';
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import LuminanceSource from './LuminanceSource';
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import System from './util/System';
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import IllegalArgumentException from './IllegalArgumentException';
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/**
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* This class is used to help decode images from files which arrive as RGB data from
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* an ARGB pixel array. It does not support rotation.
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*
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* @author dswitkin@google.com (Daniel Switkin)
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* @author Betaminos
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*/
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var RGBLuminanceSource = /** @class */ (function (_super) {
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__extends(RGBLuminanceSource, _super);
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function RGBLuminanceSource(luminances, width /*int*/, height /*int*/, dataWidth /*int*/, dataHeight /*int*/, left /*int*/, top /*int*/) {
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var _this = _super.call(this, width, height) || this;
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_this.dataWidth = dataWidth;
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_this.dataHeight = dataHeight;
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_this.left = left;
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_this.top = top;
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if (luminances.BYTES_PER_ELEMENT === 4) { // Int32Array
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var size = width * height;
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var luminancesUint8Array = new Uint8ClampedArray(size);
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for (var offset = 0; offset < size; offset++) {
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var pixel = luminances[offset];
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var r = (pixel >> 16) & 0xff; // red
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var g2 = (pixel >> 7) & 0x1fe; // 2 * green
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var b = pixel & 0xff; // blue
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// Calculate green-favouring average cheaply
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luminancesUint8Array[offset] = /*(byte) */ ((r + g2 + b) / 4) & 0xFF;
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}
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_this.luminances = luminancesUint8Array;
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}
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else {
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_this.luminances = luminances;
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}
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if (undefined === dataWidth) {
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_this.dataWidth = width;
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}
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if (undefined === dataHeight) {
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_this.dataHeight = height;
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}
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if (undefined === left) {
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_this.left = 0;
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}
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if (undefined === top) {
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_this.top = 0;
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}
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if (_this.left + width > _this.dataWidth || _this.top + height > _this.dataHeight) {
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throw new IllegalArgumentException('Crop rectangle does not fit within image data.');
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}
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return _this;
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}
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/*@Override*/
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RGBLuminanceSource.prototype.getRow = function (y /*int*/, row) {
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if (y < 0 || y >= this.getHeight()) {
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throw new IllegalArgumentException('Requested row is outside the image: ' + y);
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}
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var width = this.getWidth();
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if (row === null || row === undefined || row.length < width) {
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row = new Uint8ClampedArray(width);
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}
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var offset = (y + this.top) * this.dataWidth + this.left;
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System.arraycopy(this.luminances, offset, row, 0, width);
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return row;
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};
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/*@Override*/
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RGBLuminanceSource.prototype.getMatrix = function () {
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var width = this.getWidth();
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var height = this.getHeight();
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// If the caller asks for the entire underlying image, save the copy and give them the
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// original data. The docs specifically warn that result.length must be ignored.
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if (width === this.dataWidth && height === this.dataHeight) {
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return this.luminances;
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}
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var area = width * height;
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var matrix = new Uint8ClampedArray(area);
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var inputOffset = this.top * this.dataWidth + this.left;
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// If the width matches the full width of the underlying data, perform a single copy.
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if (width === this.dataWidth) {
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System.arraycopy(this.luminances, inputOffset, matrix, 0, area);
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return matrix;
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}
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// Otherwise copy one cropped row at a time.
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for (var y = 0; y < height; y++) {
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var outputOffset = y * width;
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System.arraycopy(this.luminances, inputOffset, matrix, outputOffset, width);
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inputOffset += this.dataWidth;
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}
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return matrix;
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};
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/*@Override*/
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RGBLuminanceSource.prototype.isCropSupported = function () {
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return true;
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};
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/*@Override*/
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RGBLuminanceSource.prototype.crop = function (left /*int*/, top /*int*/, width /*int*/, height /*int*/) {
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return new RGBLuminanceSource(this.luminances, width, height, this.dataWidth, this.dataHeight, this.left + left, this.top + top);
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};
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RGBLuminanceSource.prototype.invert = function () {
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return new InvertedLuminanceSource(this);
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};
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return RGBLuminanceSource;
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}(LuminanceSource));
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export default RGBLuminanceSource;
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