mirror of
https://github.com/lovell/sharp.git
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84fd1caa46
Only use gaussian blur for non-linear interpolators Improves performance of bilinear by ~15% Add liborc to the packaged build to improve bicubic perf Add examples of the various interpolation methods Add bilinear vs bicubic to perf tests
65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
'use strict';
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var assert = require('assert');
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var sharp = require('../../index');
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var fixtures = require('../fixtures');
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sharp.cache(0);
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describe('Gamma correction', function() {
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it('value of 0.0 (disabled)', function(done) {
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sharp(fixtures.inputJpgWithGammaHoliness)
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.resize(129, 111)
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.toBuffer(function(err, data, info) {
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(129, info.width);
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assert.strictEqual(111, info.height);
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fixtures.assertSimilar(fixtures.expected('gamma-0.0.jpg'), data, done);
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});
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});
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it('value of 2.2 (default)', function(done) {
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sharp(fixtures.inputJpgWithGammaHoliness)
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.resize(129, 111)
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.gamma()
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.toBuffer(function(err, data, info) {
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(129, info.width);
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assert.strictEqual(111, info.height);
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fixtures.assertSimilar(fixtures.expected('gamma-2.2.jpg'), data, done);
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});
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});
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it('value of 3.0', function(done) {
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sharp(fixtures.inputJpgWithGammaHoliness)
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.resize(129, 111)
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.gamma(3)
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.toBuffer(function(err, data, info) {
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assert.strictEqual('jpeg', info.format);
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assert.strictEqual(129, info.width);
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assert.strictEqual(111, info.height);
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fixtures.assertSimilar(fixtures.expected('gamma-3.0.jpg'), data, done);
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});
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});
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it('alpha transparency', function(done) {
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sharp(fixtures.inputPngOverlayLayer1)
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.resize(320)
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.gamma()
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.toBuffer(function(err, data, info) {
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assert.strictEqual('png', info.format);
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assert.strictEqual(320, info.width);
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fixtures.assertSimilar(fixtures.expected('gamma-alpha.jpg'), data, done);
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});
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});
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it('invalid value', function() {
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assert.throws(function() {
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sharp(fixtures.inputJpgWithGammaHoliness).gamma(4);
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});
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});
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});
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