mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Joey Parrish
d74841d28b
These tools had gotten out of sync with screenshot tests, leading to too many image updates in the repo. This updates the tools to ensure the same comparisons and thresholds are used in tests and when updating screenshots. The rename of build/pixelsChanged.js to build/imageSimilarity.js is not detected as such by git/GitHub, so the diff is a little messy.
33 lines
849 B
JavaScript
Executable File
33 lines
849 B
JavaScript
Executable File
#!/usr/bin/env node
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/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview
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*
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* A node script that uses the Jimp and ssim modules to compute if two images
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* are different enough to warrant updating.
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*/
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const Jimp = require('jimp');
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const {ssim} = require('ssim.js');
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/**
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* Compare two images and output the similarity between 0 and 1. Uses the same
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* comparisons done in the tests through Karma.
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*
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* @param {string} oldPath
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* @param {string} newPath
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*/
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async function main(oldPath, newPath) {
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const oldScreenshot = await Jimp.read(oldPath);
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const newScreenshot = await Jimp.read(newPath);
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const ssimResult = ssim(oldScreenshot.bitmap, newScreenshot.bitmap);
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console.log(ssimResult.mssim); // A score between 0 and 1.
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}
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main(process.argv[2], process.argv[3]);
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