From 54c118e8ac11d19f1bc1ad378f06e0d3a00dbf45 Mon Sep 17 00:00:00 2001 From: David Schulte Date: Sat, 15 Jun 2024 19:26:12 +0200 Subject: [PATCH] Added a test to verify PGS loading and rendering by comparing it to an example result. --- .github/workflows/publish.yml | 2 + .github/workflows/test.yml | 4 +- package-lock.json | 1124 +++++++++++++++++++++++++++++++++ package.json | 2 + src/pgsRendererInternal.ts | 38 +- tests/files/test-0.rgba | Bin 0 -> 32768 bytes tests/files/test-1.rgba | Bin 0 -> 32768 bytes tests/files/test-2.rgba | Bin 0 -> 32768 bytes tests/files/test.srt | 9 + tests/files/test.sup | Bin 0 -> 4749 bytes tests/pgsRenderer.test.ts | 35 + 11 files changed, 1208 insertions(+), 6 deletions(-) create mode 100644 tests/files/test-0.rgba create mode 100644 tests/files/test-1.rgba create mode 100644 tests/files/test-2.rgba create mode 100644 tests/files/test.srt create mode 100644 tests/files/test.sup create mode 100644 tests/pgsRenderer.test.ts diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml index 22374c2..19045c1 100644 --- a/.github/workflows/publish.yml +++ b/.github/workflows/publish.yml @@ -14,6 +14,8 @@ jobs: with: node-version: '22.x' registry-url: 'https://registry.npmjs.org' + - name: Install dependencies + run: sudo apt-get install -y build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev - run: npm ci - run: npm run test - run: npm run build diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml index 0986f5f..cb321c6 100644 --- a/.github/workflows/test.yml +++ b/.github/workflows/test.yml @@ -1,7 +1,5 @@ name: Run Tests on: - push: - branches: [main] pull_request: branches: [main] jobs: @@ -13,5 +11,7 @@ jobs: with: node-version: '22.x' registry-url: 'https://registry.npmjs.org' + - name: Install dependencies + run: sudo apt-get install -y build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev - run: npm ci - run: npm run test diff --git a/package-lock.json b/package-lock.json index 3383ce6..ce78958 100644 --- a/package-lock.json +++ b/package-lock.json @@ -11,7 +11,9 @@ "devDependencies": { "@tsconfig/recommended": "^1.0.6", "@types/jest": "^29.5.12", + "canvas": "^2.11.2", "jest": "^29.7.0", + "jest-environment-jsdom": "^29.7.0", "ts-jest": "^29.1.4", "ts-loader": "^9.5.1", "ts-node": "^10.9.2", @@ -1153,6 +1155,53 @@ "@jridgewell/sourcemap-codec": "^1.4.10" } }, + "node_modules/@mapbox/node-pre-gyp": { + "version": "1.0.11", + "resolved": "https://registry.npmjs.org/@mapbox/node-pre-gyp/-/node-pre-gyp-1.0.11.tgz", + "integrity": "sha512-Yhlar6v9WQgUp/He7BdgzOz8lqMQ8sU+jkCq7Wx8Myc5YFJLbEe7lgui/V7G1qB1DJykHSGwreceSaD60Y0PUQ==", + "dev": true, + "license": "BSD-3-Clause", + "dependencies": { + "detect-libc": "^2.0.0", + "https-proxy-agent": "^5.0.0", + "make-dir": "^3.1.0", + "node-fetch": "^2.6.7", + "nopt": "^5.0.0", + "npmlog": "^5.0.1", + "rimraf": "^3.0.2", + "semver": "^7.3.5", + "tar": "^6.1.11" + }, + "bin": { + "node-pre-gyp": "bin/node-pre-gyp" + } + }, + "node_modules/@mapbox/node-pre-gyp/node_modules/make-dir": { + "version": "3.1.0", + "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz", + "integrity": "sha512-g3FeP20LNwhALb/6Cz6Dd4F2ngze0jz7tbzrD2wAV+o9FeNHe4rL+yK2md0J/fiSf1sa1ADhXqi5+oVwOM/eGw==", + "dev": true, + "license": "MIT", + "dependencies": { + "semver": "^6.0.0" + }, + "engines": { + "node": ">=8" + }, + "funding": { + "url": "https://github.com/sponsors/sindresorhus" + } + }, + "node_modules/@mapbox/node-pre-gyp/node_modules/make-dir/node_modules/semver": { + "version": "6.3.1", + "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz", + "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==", + "dev": true, + "license": "ISC", + "bin": { + "semver": "bin/semver.js" + } + }, "node_modules/@sinclair/typebox": { "version": "0.27.8", "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz", @@ -1180,6 +1229,16 @@ "@sinonjs/commons": "^3.0.0" } }, + "node_modules/@tootallnate/once": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-2.0.0.tgz", + "integrity": "sha512-XCuKFP5PS55gnMVu3dty8KPatLqUoy/ZYzDzAGCQ8JNFCkLXzmI7vNHCR+XpbZaMWQK/vQubr7PkYq8g470J/A==", + "dev": true, + "license": "MIT", + "engines": { + "node": ">= 10" + } + }, "node_modules/@tsconfig/node10": { "version": "1.0.11", "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.11.tgz", @@ -1337,6 +1396,18 @@ "pretty-format": "^29.0.0" } }, + "node_modules/@types/jsdom": { + "version": "20.0.1", + "resolved": "https://registry.npmjs.org/@types/jsdom/-/jsdom-20.0.1.tgz", + "integrity": "sha512-d0r18sZPmMQr1eG35u12FZfhIXNrnsPU/g5wvRKCUf/tOGilKKwYMYGqh33BNR6ba+2gkHw1EUiHoN3mn7E5IQ==", + "dev": true, + "license": "MIT", + "dependencies": { + "@types/node": "*", + "@types/tough-cookie": "*", + "parse5": "^7.0.0" + } + }, "node_modules/@types/json-schema": { "version": "7.0.15", "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz", @@ -1361,6 +1432,13 @@ "dev": true, "license": "MIT" }, + "node_modules/@types/tough-cookie": { + "version": "4.0.5", + "resolved": "https://registry.npmjs.org/@types/tough-cookie/-/tough-cookie-4.0.5.tgz", + "integrity": "sha512-/Ad8+nIOV7Rl++6f1BdKxFSMgmoqEoYbHRpPcx3JEfv8VRsQe9Z4mCXeJBzxs7mbHY/XOZZuXlRNfhpVPbs6ZA==", + "dev": true, + "license": "MIT" + }, "node_modules/@types/yargs": { "version": "17.0.32", "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.32.tgz", @@ -1600,6 +1678,21 @@ "dev": true, "license": "Apache-2.0" }, + "node_modules/abab": { + "version": "2.0.6", + "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.6.tgz", + "integrity": "sha512-j2afSsaIENvHZN2B8GOpF566vZ5WVk5opAiMTvWgaQT8DkbOqsTfvNAvHoRGU2zzP8cPoqys+xHTRDWW8L+/BA==", + "deprecated": "Use your platform's native atob() and btoa() methods instead", + "dev": true, + "license": "BSD-3-Clause" + }, + "node_modules/abbrev": { + "version": "1.1.1", + "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz", + "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==", + "dev": true, + "license": "ISC" + }, "node_modules/acorn": { "version": "8.11.3", "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.11.3.tgz", @@ -1613,6 +1706,17 @@ "node": ">=0.4.0" } }, + "node_modules/acorn-globals": { + "version": "7.0.1", + "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-7.0.1.tgz", + "integrity": "sha512-umOSDSDrfHbTNPuNpC2NSnnA3LUrqpevPb4T9jRx4MagXNS0rs+gwiTcAvqCRmsD6utzsrzNt+ebm00SNWiC3Q==", + "dev": true, + "license": "MIT", + "dependencies": { + "acorn": "^8.1.0", + "acorn-walk": "^8.0.2" + } + }, "node_modules/acorn-import-assertions": { "version": "1.9.0", "resolved": "https://registry.npmjs.org/acorn-import-assertions/-/acorn-import-assertions-1.9.0.tgz", @@ -1633,6 +1737,19 @@ "node": ">=0.4.0" } }, + "node_modules/agent-base": { + "version": "6.0.2", + "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz", + "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==", + "dev": true, + "license": "MIT", + "dependencies": { + "debug": "4" + }, + "engines": { + "node": ">= 6.0.0" + } + }, "node_modules/ajv": { "version": "6.12.6", "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz", @@ -1716,6 +1833,28 @@ "node": ">= 8" } }, + "node_modules/aproba": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/aproba/-/aproba-2.0.0.tgz", + "integrity": "sha512-lYe4Gx7QT+MKGbDsA+Z+he/Wtef0BiwDOlK/XkBrdfsh9J/jPPXbX0tE9x9cl27Tmu5gg3QUbUrQYa/y+KOHPQ==", + "dev": true, + "license": "ISC" + }, + "node_modules/are-we-there-yet": { + "version": "2.0.0", + "resolved": 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"CC-BY-4.0" }, + "node_modules/canvas": { + "version": "2.11.2", + "resolved": "https://registry.npmjs.org/canvas/-/canvas-2.11.2.tgz", + "integrity": "sha512-ItanGBMrmRV7Py2Z+Xhs7cT+FNt5K0vPL4p9EZ/UX/Mu7hFbkxSjKF2KVtPwX7UYWp7dRKnrTvReflgrItJbdw==", + "dev": true, + "hasInstallScript": true, + "license": "MIT", + "dependencies": { + "@mapbox/node-pre-gyp": "^1.0.0", + "nan": "^2.17.0", + "simple-get": "^3.0.3" + }, + "engines": { + "node": ">=6" + } + }, "node_modules/chalk": { "version": "4.1.2", "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz", @@ -2031,6 +2193,16 @@ "node": ">=10" } }, + "node_modules/chownr": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/chownr/-/chownr-2.0.0.tgz", + "integrity": "sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==", + "dev": true, + "license": "ISC", + "engines": { + "node": ">=10" + } + }, "node_modules/chrome-trace-event": { "version": "1.0.4", "resolved": 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"sha512-ICP2e+jsHvAj2E2lIHxa5tjXRlKDJo4IdvPvCXbXQGdzSfmSpNVyIKMvoZHjDY9DP0zV17iI85o90vRFXNccRw==", + "dev": true, + "license": "Apache-2.0", + "engines": { + "node": ">=12" + } + }, + "node_modules/xmlchars": { + "version": "2.2.0", + "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz", + "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==", + "dev": true, + "license": "MIT" + }, "node_modules/y18n": { "version": "5.0.8", "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz", diff --git a/package.json b/package.json index bac3832..fda39ba 100644 --- a/package.json +++ b/package.json @@ -28,7 +28,9 @@ "devDependencies": { "@tsconfig/recommended": "^1.0.6", "@types/jest": "^29.5.12", + "canvas": "^2.11.2", "jest": "^29.7.0", + "jest-environment-jsdom": "^29.7.0", "ts-jest": "^29.1.4", "ts-loader": "^9.5.1", "ts-node": "^10.9.2", diff --git a/src/pgsRendererInternal.ts b/src/pgsRendererInternal.ts index 3804c34..98c1b2e 100644 --- a/src/pgsRendererInternal.ts +++ b/src/pgsRendererInternal.ts @@ -67,6 +67,26 @@ export class PgsRendererInternal { this.context = canvas.getContext('2d')! as OffscreenCanvasRenderingContext2D | CanvasRenderingContext2D; } + /** + * Renders the subtitle at the given timestamp. + * @param time The timestamp in seconds. + */ + public renderAtTimestamp(time: number): void { + time = time * 1000 * 90; // Convert to PGS time + + // Find the last subtitle index for the given time stamp + let index = -1; + for (const updateTimestamp of this.updateTimestamps) { + + if (updateTimestamp > time) { + break; + } + index++; + } + + this.renderAtIndex(index); + } + /** * Renders the subtitle with the given index. * @param index The index of the display set to render. @@ -128,15 +148,25 @@ export class PgsRendererInternal { // Builds the subtitle. const pixelData = this.getPixelDataFromComposition(compositionObject, palette, ctxObjects); if (pixelData) { - this.context?.drawImage(pixelData, window.horizontalPosition, window.verticalPosition); + this.context.drawImage(pixelData, window.horizontalPosition, window.verticalPosition); } } } + private createCanvas(width: number, height: number): OffscreenCanvas | HTMLCanvasElement { + if (typeof document !== 'undefined') { + const canvas = document.createElement("canvas"); + canvas.width = width; + canvas.height = height; + return canvas; + } else { + return new OffscreenCanvas(width, height); + } + } private getPixelDataFromComposition(composition: CompositionObject, palette: PaletteDefinitionSegment, ctxObjects: ObjectDefinitionSegment[]): - OffscreenCanvas | undefined { + OffscreenCanvas | HTMLCanvasElement | undefined { // Multiple object definition can define a single subtitle image. // However, only the first element in sequence hold the image size. @@ -163,8 +193,8 @@ export class PgsRendererInternal { const data = new CombinedBinaryReader(dataChunks); // Building a canvas element with 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{PgsRendererInternal} from "../src/pgsRendererInternal"; +import * as fs from "node:fs"; + +test('load and render pgs', () => { + const dataSup = fs.readFileSync(`${__dirname}/files/test.sup`); + + const canvas = document.createElement("canvas"); + const context = canvas.getContext("2d")!; + const renderer = new PgsRendererInternal(); + renderer.setCanvas(canvas); + renderer.loadFromBuffer(dataSup); + + // Helper function to render and compare the image in the test directory. + // Since we only set pixel data and don't use font rendering this should be deterministic on every machine. + const expectImageAtTimestamp = (filename: string, timestamp: number) => { + const expectedData = fs.readFileSync(`${__dirname}/files/${filename}`); + + renderer.renderAtTimestamp(timestamp); + const resultData = context.getImageData(0, 0, canvas.width, canvas.height).data; + + // Compare the resulted pixel data with a pre-calculated expected pixel data. + expect(resultData.length).toBe(expectedData.length); + for (let i = 0; i < resultData.length; i++) { + expect(resultData[i]).toBe(expectedData[i]); + } + } + + expectImageAtTimestamp('test-0.rgba', 1.5); + expectImageAtTimestamp('test-1.rgba', 2.5); + expectImageAtTimestamp('test-2.rgba', 3.5); +});