| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.TXIOutputFormat = void 0;
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| 4 | const tslib_1 = require("tslib");
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| 5 | const stream_1 = require("stream");
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| 6 | const image_codec_txi_1 = require("@fitbit/image-codec-txi");
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| 7 | Object.defineProperty(exports, "TXIOutputFormat", { enumerable: true, get: function () { return image_codec_txi_1.TXIOutputFormat; } });
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| 8 | const plugin_error_1 = tslib_1.__importDefault(require("plugin-error"));
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| 9 | const pngjs_1 = require("@fitbit/pngjs");
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| 10 | const PLUGIN_NAME = 'convertImageToTXI';
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| 11 | function pickOutputFormat(image, rgbaOutputFormat = image_codec_txi_1.TXIOutputFormat.RGBA8888) {
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| 12 | if (!image.color)
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| 13 | return image_codec_txi_1.TXIOutputFormat.A8;
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| 14 | if (!image.alpha)
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| 15 | return image_codec_txi_1.TXIOutputFormat.RGB565;
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| 16 | return rgbaOutputFormat;
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| 17 | }
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| 18 | function transformPNG(png, rgbaOutputFormat) {
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| 19 | return new Promise((resolve, reject) => {
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| 20 | png.on('metadata', (metadata) => {
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| 21 | png.on('parsed', () => {
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| 22 | try {
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| 23 | const txi = image_codec_txi_1.encode({
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| 24 | data: new Uint8ClampedArray(png.data),
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| 25 | width: png.width,
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| 26 | height: png.height,
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| 27 | }, {
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| 28 | outputFormat: pickOutputFormat(metadata, rgbaOutputFormat),
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| 29 | rle: 'auto',
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| 30 | });
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| 31 | resolve(Buffer.from(txi));
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| 32 | }
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| 33 | catch (e) {
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| 34 | reject(e);
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| 35 | }
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| 36 | });
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| 37 | });
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| 38 | png.on('error', reject);
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| 39 | });
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| 40 | }
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| 41 | function transformPNGBuffer(file, rgbaOutputFormat) {
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| 42 | const png = new pngjs_1.PNG();
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| 43 | const transformer = transformPNG(png, rgbaOutputFormat);
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| 44 | png.parse(file);
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| 45 | return transformer;
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| 46 | }
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| 47 | function transformPNGStream(file, rgbaOutputFormat) {
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| 48 | let started = false;
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| 49 | return new stream_1.Readable({
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| 50 | read() {
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| 51 | if (started)
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| 52 | return;
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| 53 | started = true;
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| 54 | const png = new pngjs_1.PNG();
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| 55 | transformPNG(png, rgbaOutputFormat)
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| 56 | .then((txi) => {
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| 57 | this.push(txi);
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| 58 | this.push(null);
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| 59 | })
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| 60 | .catch((error) => this.emit('error', error));
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| 61 | file.on('error', (err) => this.emit('error', err)).pipe(png);
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| 62 | },
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| 63 | });
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| 64 | }
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| 65 | function convertImageToTXI(options = {}) {
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| 66 | return new stream_1.Transform({
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| 67 | objectMode: true,
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| 68 | transform(file, _, cb) {
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| 69 | if (file.isNull() || file.extname !== '.png') {
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| 70 | return cb(undefined, file);
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| 71 | }
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| 72 | const fileName = file.relative;
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| 73 | file.basename += '.txi';
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| 74 | if (file.isBuffer()) {
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| 75 | transformPNGBuffer(file.contents, options.rgbaOutputFormat)
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| 76 | .then((txi) => {
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| 77 | file.contents = txi;
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| 78 | cb(undefined, file);
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| 79 | })
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| 80 | .catch((err) => cb(new plugin_error_1.default(PLUGIN_NAME, err, { fileName })));
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| 81 | }
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| 82 | else if (file.isStream()) {
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| 83 | file.contents = transformPNGStream(file.contents, options.rgbaOutputFormat).on('error', (err) => this.emit('error', new plugin_error_1.default(PLUGIN_NAME, err, { fileName })));
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| 84 | cb(undefined, file);
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| 85 | }
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| 86 | },
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| 87 | });
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| 88 | }
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| 89 | exports.default = convertImageToTXI;
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