mirror of
https://github.com/zoriya/libpgs-js.git
synced 2026-08-27 00:00:51 +00:00
David Schulte
b1b5062e08
Added a fallback implementation if `transferControlToOffscreen` is not supported. Subtitle rendering now uses `putImageData`. This is faster, but replaces all pixels at this location and disallows overlays. Not sure if overlapping multiple PGS windows is even allowed.
32 lines
1012 B
TypeScript
32 lines
1012 B
TypeScript
import {Pgs} from "../src/pgs";
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import * as fs from "node:fs";
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beforeEach(() => {
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// This makes `ImageData` available in Jest.
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global.ImageData = require('canvas').ImageData;
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});
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test('load pgs from file and check timestamps', async () => {
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const pgs = new Pgs();
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const dataSup = fs.readFileSync(`${__dirname}/files/test.sup`);
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await pgs.loadFromBuffer(dataSup);
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expect(pgs.updateTimestamps).toEqual([90000, 180000, 270000, 360000]);
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});
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test('load pgs from file and get first subtitle', async () => {
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const pgs = new Pgs();
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const dataSup = fs.readFileSync(`${__dirname}/files/test.sup`);
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await pgs.loadFromBuffer(dataSup);
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const subtitle = pgs.getSubtitleAtTimestamp(1.5);
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expect(subtitle).toBeDefined();
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expect(subtitle!.width).toBe(128);
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expect(subtitle!.height).toBe(64);
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expect(subtitle!.compositionData.length).toBe(1);
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expect(subtitle!.compositionData[0].window.horizontalPosition).toBe(4);
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expect(subtitle!.compositionData[0].window.verticalPosition).toBe(32);
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});
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