png-to-rgba/build/index.js

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
exports.__esModule = true;
var pngjs_1 = require("pngjs");
function PNGToRGBAArray(data) {
    var png = pngjs_1.PNG.sync.read(data);
    var width = png.width;
    var height = png.height;
    var pixels = png.data;
    var rgba = [];
    for (var i = 0; i < height; i++) {
        rgba[i] = [];
        for (var j = 0; j < width; j++) {
            var index = (i * width + j) * 4;
            rgba[i][j] = [pixels[index], pixels[index + 1], pixels[index + 2], pixels[index + 3]];
        }
    }
    return {
        rgba: rgba,
        width: width,
        height: height,
        png: png
    };
}
function RGBAArrayToPNG(arr, opt) {
    if (opt === void 0) { opt = {}; }
    var png = new pngjs_1.PNG(__assign(__assign({ colorType: 6, inputHasAlpha: true }, opt), { width: arr[0].length, height: arr.length }));
    for (var i = 0; i < arr.length; i++) {
        for (var j = 0; j < arr[i].length; j++) {
            var index = (i * arr[i].length + j) * 4;
            png.data[index] = arr[i][j][0];
            png.data[index + 1] = arr[i][j][1];
            png.data[index + 2] = arr[i][j][2];
            png.data[index + 3] = arr[i][j][3];
        }
    }
    return pngjs_1.PNG.sync.write(png);
}
exports["default"] = {
    PNGToRGBAArray: PNGToRGBAArray,
    RGBAArrayToPNG: RGBAArrayToPNG
};