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Fix 16-bit, 2-channel PNG w/ ICC profile support #2013

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Lovell Fuller
2019-12-20 17:19:33 +00:00
parent 703d90e663
commit 755a0caf3d
6 changed files with 20 additions and 1 deletions
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test/fixtures/16-bit-grey-alpha.png vendored Normal file
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test/fixtures/expected/16-bit-grey-alpha-identity.png vendored Normal file
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1
test/fixtures/index.js vendored
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@@ -79,6 +79,7 @@ module.exports = {
inputPngWithGreyAlpha: getPath('grey-8bit-alpha.png'),
inputPngWithOneColor: getPath('2x2_fdcce6.png'),
inputPngWithTransparency16bit: getPath('tbgn2c16.png'), // http://www.schaik.com/pngsuite/tbgn2c16.png
inputPng16BitGreyAlpha: getPath('16-bit-grey-alpha.png'), // CC-BY-NC-SA florc http://www.colourlovers.com/pattern/50713/pat
inputPngOverlayLayer0: getPath('alpha-layer-0-background.png'),
inputPngOverlayLayer1: getPath('alpha-layer-1-fill.png'),
inputPngAlphaPremultiplicationSmall: getPath('alpha-premultiply-1024x768-paper.png'),

9
test/unit/png.js
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@@ -103,6 +103,15 @@ describe('PNG', function () {
});
});
it('16-bit grey+alpha PNG identity transform', function () {
const actual = fixtures.path('output.16-bit-grey-alpha-identity.png');
return sharp(fixtures.inputPng16BitGreyAlpha)
.toFile(actual)
.then(function () {
fixtures.assertMaxColourDistance(actual, fixtures.expected('16-bit-grey-alpha-identity.png'));
});
});
it('Valid PNG libimagequant palette value does not throw error', function () {
assert.doesNotThrow(function () {
sharp().png({ palette: false });