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Add support for raw, uncompressed pixel Buffer/Stream input

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Lovell Fuller
2016-02-03 19:21:37 +00:00
parent cf7664a854
commit e380576da2
7 changed files with 177 additions and 31 deletions
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82
test/unit/io.js
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@@ -862,6 +862,88 @@ describe('Input/output', function() {
});
});
describe('Raw pixel input', function() {
it('Missing options', function() {
assert.throws(function() {
sharp(null, { raw: {} } );
});
});
it('Incomplete options', function() {
assert.throws(function() {
sharp(null, { raw: { width: 1, height: 1} } );
});
});
it('Invalid channels', function() {
assert.throws(function() {
sharp(null, { raw: { width: 1, height: 1, channels: 5} } );
});
});
it('Invalid height', function() {
assert.throws(function() {
sharp(null, { raw: { width: 1, height: 0, channels: 4} } );
});
});
it('Invalid width', function() {
assert.throws(function() {
sharp(null, { raw: { width: 'zoinks', height: 1, channels: 4} } );
});
});
it('RGB', function(done) {
// Convert to raw pixel data
sharp(fixtures.inputJpg)
.resize(256)
.raw()
.toBuffer(function(err, data, info) {
if (err) throw err;
assert.strictEqual(256, info.width);
assert.strictEqual(209, info.height);
assert.strictEqual(3, info.channels);
// Convert back to JPEG
sharp(data, {
raw: {
width: info.width,
height: info.height,
channels: info.channels
}})
.jpeg()
.toBuffer(function(err, data, info) {
if (err) throw err;
assert.strictEqual(256, info.width);
assert.strictEqual(209, info.height);
assert.strictEqual(3, info.channels);
fixtures.assertSimilar(fixtures.inputJpg, data, done);
});
});
});
it('RGBA', function(done) {
// Convert to raw pixel data
sharp(fixtures.inputPngOverlayLayer1)
.resize(256)
.raw()
.toBuffer(function(err, data, info) {
if (err) throw err;
assert.strictEqual(256, info.width);
assert.strictEqual(192, info.height);
assert.strictEqual(4, info.channels);
// Convert back to PNG
sharp(data, {
raw: {
width: info.width,
height: info.height,
channels: info.channels
}})
.png()
.toBuffer(function(err, data, info) {
if (err) throw err;
assert.strictEqual(256, info.width);
assert.strictEqual(192, info.height);
assert.strictEqual(4, info.channels);
fixtures.assertSimilar(fixtures.inputPngOverlayLayer1, data, done);
});
});
});
});
it('Queue length change events', function(done) {
var eventCounter = 0;
var queueListener = function(queueLength) {