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Add support for gamma correction #43

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Lovell Fuller
2014-08-25 21:17:13 +01:00
parent bac367b005
commit 5728efd32b
6 changed files with 85 additions and 2 deletions
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tests/fixtures/gamma_dalai_lama_gray.jpg vendored Normal file
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Width:  |  Height:  |  Size: 83 KiB

12
tests/perf.js
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@@ -245,6 +245,18 @@ async.series({
}
});
}
}).add("sharp-file-buffer-gamma", {
defer: true,
fn: function(deferred) {
sharp(inputJpg).resize(width, height).gamma().toBuffer(function(err, buffer) {
if (err) {
throw err;
} else {
assert.notStrictEqual(null, buffer);
deferred.resolve();
}
});
}
}).add("sharp-file-buffer-progressive", {
defer: true,
fn: function(deferred) {

21
tests/unit.js
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@@ -18,6 +18,8 @@ var outputTiff = path.join(fixturesPath, "output.tiff");
var inputJpgWithExif = path.join(fixturesPath, "Landscape_8.jpg"); // https://github.com/recurser/exif-orientation-examples/blob/master/Landscape_8.jpg
var inputJpgWithGammaHoliness = path.join(fixturesPath, "gamma_dalai_lama_gray.jpg"); // http://www.4p8.com/eric.brasseur/gamma.html
var inputPng = path.join(fixturesPath, "50020484-00001.png"); // http://c.searspartsdirect.com/lis_png/PLDM/50020484-00001.png
var inputWebp = path.join(fixturesPath, "4.webp"); // http://www.gstatic.com/webp/gallery/4.webp
var inputGif = path.join(fixturesPath, "Crash_test.gif"); // http://upload.wikimedia.org/wikipedia/commons/e/e3/Crash_test.gif
@@ -571,6 +573,25 @@ async.series([
});
});
},
// Gamma correction
function(done) {
sharp(inputJpgWithGammaHoliness).resize(129, 111).toFile(path.join(fixturesPath, 'output.gamma-0.0.jpg'), function(err) {
if (err) throw err;
done();
});
},
function(done) {
sharp(inputJpgWithGammaHoliness).resize(129, 111).gamma().toFile(path.join(fixturesPath, 'output.gamma-2.2.jpg'), function(err) {
if (err) throw err;
done();
});
},
function(done) {
sharp(inputJpgWithGammaHoliness).resize(129, 111).gamma(3).toFile(path.join(fixturesPath, 'output.gamma-3.0.jpg'), function(err) {
if (err) throw err;
done();
});
},
// Verify internal counters
function(done) {
var counters = sharp.counters();