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Add support for GIF output using cgif in prebuilt binaries

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Lovell Fuller
2021-11-19 08:29:31 +00:00
parent b876abaf88
commit f7f3e43490
14 changed files with 157 additions and 105 deletions
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107
test/unit/gif.js
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@@ -42,7 +42,7 @@ describe('GIF input', () => {
.then(({ data, info }) => {
assert.strictEqual(true, data.length > 0);
assert.strictEqual(data.length, info.size);
assert.strictEqual(sharp.format.magick.input.buffer ? 'gif' : 'png', info.format);
assert.strictEqual('gif', info.format);
assert.strictEqual(80, info.width);
assert.strictEqual(80, info.height);
assert.strictEqual(4, info.channels);
@@ -55,28 +55,30 @@ describe('GIF input', () => {
.then(({ data, info }) => {
assert.strictEqual(true, data.length > 0);
assert.strictEqual(data.length, info.size);
assert.strictEqual(sharp.format.magick.input.buffer ? 'gif' : 'png', info.format);
assert.strictEqual('gif', info.format);
assert.strictEqual(80, info.width);
assert.strictEqual(2400, info.height);
assert.strictEqual(4, info.channels);
})
);
if (!sharp.format.magick.output.buffer) {
it('GIF buffer output should fail due to missing ImageMagick', () => {
assert.throws(
() => sharp().gif(),
/GIF output requires libvips with support for ImageMagick/
);
});
it('GIF with reduced colours, no dither, low effort reduces file size', async () => {
const original = await sharp(fixtures.inputJpg)
.resize(120, 80)
.gif()
.toBuffer();
it('GIF file output should fail due to missing ImageMagick', () => {
assert.rejects(
async () => await sharp().toFile('test.gif'),
/GIF output requires libvips with support for ImageMagick/
);
});
}
const reduced = await sharp(fixtures.inputJpg)
.resize(120, 80)
.gif({
colours: 128,
dither: 0,
effort: 1
})
.toBuffer();
assert.strictEqual(true, reduced.length < original.length);
});
it('invalid pageHeight throws', () => {
assert.throws(() => {
@@ -88,7 +90,6 @@ describe('GIF input', () => {
assert.throws(() => {
sharp().gif({ loop: -1 });
});
assert.throws(() => {
sharp().gif({ loop: 65536 });
});
@@ -98,41 +99,59 @@ describe('GIF input', () => {
assert.throws(() => {
sharp().gif({ delay: [-1] });
});
assert.throws(() => {
sharp().gif({ delay: [65536] });
});
});
it('invalid colour throws', () => {
assert.throws(() => {
sharp().gif({ colours: 1 });
});
assert.throws(() => {
sharp().gif({ colours: 'fail' });
});
});
it('invalid effort throws', () => {
assert.throws(() => {
sharp().gif({ effort: 0 });
});
assert.throws(() => {
sharp().gif({ effort: 'fail' });
});
});
it('invalid dither throws', () => {
assert.throws(() => {
sharp().gif({ dither: 1.1 });
});
assert.throws(() => {
sharp().gif({ effort: 'fail' });
});
});
it('should work with streams when only animated is set', function (done) {
if (sharp.format.magick.output.buffer) {
fs.createReadStream(fixtures.inputGifAnimated)
.pipe(sharp({ animated: true }))
.gif()
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('gif', info.format);
fixtures.assertSimilar(fixtures.inputGifAnimated, data, done);
});
} else {
done();
}
fs.createReadStream(fixtures.inputGifAnimated)
.pipe(sharp({ animated: true }))
.gif()
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('gif', info.format);
fixtures.assertSimilar(fixtures.inputGifAnimated, data, done);
});
});
it('should work with streams when only pages is set', function (done) {
if (sharp.format.magick.output.buffer) {
fs.createReadStream(fixtures.inputGifAnimated)
.pipe(sharp({ pages: -1 }))
.gif()
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('gif', info.format);
fixtures.assertSimilar(fixtures.inputGifAnimated, data, done);
});
} else {
done();
}
fs.createReadStream(fixtures.inputGifAnimated)
.pipe(sharp({ pages: -1 }))
.gif()
.toBuffer(function (err, data, info) {
if (err) throw err;
assert.strictEqual(true, data.length > 0);
assert.strictEqual('gif', info.format);
fixtures.assertSimilar(fixtures.inputGifAnimated, data, done);
});
});
});

13
test/unit/io.js
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@@ -561,19 +561,6 @@ describe('Input/output', function () {
});
});
it('Autoconvert GIF input to PNG output', function (done) {
sharp(fixtures.inputGif)
.resize(320, 80)
.toFile(outputZoinks, function (err, info) {
if (err) throw err;
assert.strictEqual(true, info.size > 0);
assert.strictEqual(sharp.format.magick.input.buffer ? 'gif' : 'png', info.format);
assert.strictEqual(320, info.width);
assert.strictEqual(80, info.height);
rimraf(outputZoinks, done);
});
});
it('Force JPEG format for PNG input', function (done) {
sharp(fixtures.inputPng)
.resize(320, 80)