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picha

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picha - npm Package Compare versions

Comparing version 0.4.4 to 0.4.5

.jshintrc

75

index.js

@@ -0,1 +1,2 @@

"use strict";

@@ -16,7 +17,7 @@ var image = require('./lib/image');

});
}
};
var resizeSync = exports.resizeSync = function(img, opt) {
return new Image(picha.resizeSync(img, opt));
}
};

@@ -29,7 +30,7 @@ //--

});
}
};
var colorConvertSync = exports.colorConvertSync = function(img, opt) {
return new Image(picha.colorConvertSync(img, opt));
}
};

@@ -43,20 +44,20 @@ //--

var decodePng = exports.decodePng = function(buf, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.decodePng(buf, opt, function(err, img) {
cb(err, img && new Image(img));
})
}
});
};
var decodePngSync = exports.decodePngSync = function(buf, opt) {
return new Image(picha.decodePngSync(buf, opt || {}));
}
};
var encodePng = exports.encodePng = function(img, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.encodePng(img, opt, cb);
}
};
var encodePngSync = exports.encodePngSync = function(img, opt) {
return picha.encodePngSync(img, opt || {});
}
};
}

@@ -71,20 +72,20 @@

var decodeJpeg = exports.decodeJpeg = function(buf, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.decodeJpeg(buf, opt, function(err, img) {
cb(err, img && new Image(img));
})
}
});
};
var decodeJpegSync = exports.decodeJpegSync = function(buf, opt) {
return new Image(picha.decodeJpegSync(buf, opt || {}));
}
};
var encodeJpeg = exports.encodeJpeg = function(img, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.encodeJpeg(img, opt, cb);
}
};
var encodeJpegSync = exports.encodeJpegSync = function(img, opt) {
return picha.encodeJpegSync(img, opt || {});
}
};
}

@@ -99,20 +100,20 @@

var decodeTiff = exports.decodeTiff = function(buf, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.decodeTiff(buf, opt, function(err, img) {
cb(err, img && new Image(img));
})
}
});
};
var decodeTiffSync = exports.decodeTiffSync = function(buf, opt) {
return new Image(picha.decodeTiffSync(buf, opt || {}));
}
};
var encodeTiff = exports.encodeTiff = function(img, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.encodeTiff(img, opt, cb);
}
};
var encodeTiffSync = exports.encodeTiffSync = function(img, opt) {
return picha.encodeTiffSync(img, opt || {});
}
};
}

@@ -127,20 +128,20 @@

var decodeWebP = exports.decodeWebP = function(buf, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.decodeWebP(buf, opt, function(err, img) {
cb(err, img && new Image(img));
})
}
});
};
var decodeWebPSync = exports.decodeWebPSync = function(buf, opt) {
return new Image(picha.decodeWebPSync(buf, opt || {}));
}
};
var encodeWebP = exports.encodeWebP = function(img, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
picha.encodeWebP(img, opt, cb);
}
};
var encodeWebPSync = exports.encodeWebPSync = function(img, opt) {
return picha.encodeWebPSync(img, opt || {});
}
};
}

@@ -158,6 +159,6 @@

}
}
};
var decode = exports.decode = function(buf, opt, cb) {
if (typeof opt === 'function') cb = opt, opt = {};
if (typeof opt === 'function') { cb = opt; opt = {}; }
tryNext(0);

@@ -172,3 +173,3 @@

}
}
};

@@ -184,3 +185,3 @@ var decodeSync = exports.decodeSync = function(buf, opt) {

}
throw new Error("unsupported image file")
}
throw new Error("unsupported image file");
};

43

lib/image.js

@@ -0,6 +1,5 @@

"use strict";
var buffertools = require('buffertools');
var Image = exports.Image = function(opt) {
if (opt == null) opt = {};
if (!opt) opt = {};
this.data = opt.data;

@@ -12,3 +11,3 @@ this.width = opt.width || 0;

this.stride = opt.stride || ((this.width * psize + 3) & ~3);
if (psize == 0)
if (psize === 0)
throw new Error("invalid pixel format " + this.pixel);

@@ -19,9 +18,9 @@ if (this.stide < this.width * psize)

throw new Error("invalid dimensions");
if (this.stride * this.height != 0 && this.data == null)
if (this.stride * this.height !== 0 && !this.data)
this.data = new Buffer(this.stride * this.height);
if (this.data && this.data.length < this.stride * (this.height - 1) + this.width * psize)
throw new Error("image data too small");
}
};
const pixelSizes = {
var pixelSizes = {
'rgb': 3,

@@ -31,16 +30,27 @@ 'rgba': 4,

'greya': 2,
}
};
Image.pixelSize = function(pixel) {
return pixelSizes[pixel] || 0;
}
};
Image.prototype.pixelSize = function() {
return pixelSizes[this.pixel] || 0;
}
};
Image.prototype.row = function(y) {
return this.data.slice(y * this.stride, y * this.stride + this.width * this.pixelSize());
};
function slowBufferCompare(a, b) {
for (var i = 0; ; i += 1) {
if (i == a.length) return i == b.length ? 0 : -1;
if (i == b.length) return 1;
if (a[i] < b[i]) return -1;
if (a[i] > b[i]) return 1;
}
}
Image.bufferCompare = Buffer.compare || slowBufferCompare;
Image.prototype.equalPixels = function(o) {

@@ -50,6 +60,6 @@ if (this.width !== o.width || this.height != o.height || this.pixel != o.pixel)

for (var y = 0; y < this.height; ++y)
if (buffertools.compare(this.row(y), o.row(y)) != 0)
if (Image.bufferCompare(this.row(y), o.row(y)) !== 0)
return false;
return true;
}
};

@@ -64,3 +74,3 @@ Image.prototype.avgChannelDiff = function(o) {

return s / (this.height * rw);
}
};

@@ -78,3 +88,3 @@ Image.prototype.subView = function(x, y, w, h) {

});
}
};

@@ -86,3 +96,4 @@ Image.prototype.copy = function(targetImage) {

var h = Math.min(this.height, targetImage.height);
for (var y = 0; y < h; ++y) this.data.copy(targetImage.data, y * targetImage.stride, y * this.stride, y * this.stride + rw);
}
for (var y = 0; y < h; ++y)
this.data.copy(targetImage.data, y * targetImage.stride, y * this.stride, y * this.stride + rw);
};

4

package.json
{
"name": "picha",
"version": "0.4.4",
"version": "0.4.5",
"description": "image format codec and simple image processing",

@@ -23,3 +23,3 @@ "main": "index.js",

"dependencies": {
"buffertools": "~2.0.0"
"nan": "^1.5.1"
},

@@ -26,0 +26,0 @@ "devDependencies": {

6

test/codec.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -65,3 +67,3 @@ var fs = require('fs');

}
})
})
});
});

10

test/color_convert.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -32,5 +34,5 @@ var fs = require('fs');

done();
})
})
})
})
});
});
});
});

6

test/copy.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -20,3 +22,3 @@ var fs = require('fs');

assert(image.subView(0, 0, 30, 30).equalPixels(c));
})
})
});
});

35

test/jpeg_codec.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -5,3 +7,2 @@ var fs = require('fs');

var assert = require('assert');
var buffertools = require('buffertools');
var picha = require('../index.js');

@@ -43,4 +44,4 @@

assert(syncImage.equalPixels(asyncImage));
})
})
});
});
describe("encode " + name, function() {

@@ -51,11 +52,11 @@ it("should async encode", function(done) {

done(err);
})
});
});
it("should sync encode", function() {
syncJpeg = picha.encodeJpegSync(syncImage, { quality: 100 });
})
});
it("should be the same sync or async", function() {
assert(buffertools.compare(asyncJpeg, syncJpeg) == 0);
})
})
assert(picha.Image.bufferCompare(asyncJpeg, syncJpeg) === 0);
});
});
describe("round trip " + name, function() {

@@ -67,8 +68,8 @@ it("async should nearly match original", function(done) {

});
})
});
it("sync should nearly match original", function() {
image = picha.decodeJpegSync(syncJpeg);
var image = picha.decodeJpegSync(syncJpeg);
assert(image.avgChannelDiff(syncImage) < 8);
})
})
});
});
}

@@ -85,10 +86,10 @@

assert(img.pixel === "rgba");
})
});
it("should jpeg encode rgba", function() {
var jpeg = picha.encodeJpegSync(img, { quality: 100 });
})
});
it("should jpeg encode greya", function() {
var jpeg = picha.encodeJpegSync(picha.colorConvertSync(img, { pixel: 'greya' }), { quality: 100 });
})
})
})
});
});
});

27

test/png_codec.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -5,3 +7,2 @@ var fs = require('fs');

var assert = require('assert');
var buffertools = require('buffertools');
var picha = require('../index.js');

@@ -42,4 +43,4 @@

assert(syncImage.equalPixels(asyncImage));
})
})
});
});
describe("encode", function() {

@@ -50,11 +51,11 @@ it("should async encode", function(done) {

done(err);
})
});
});
it("should sync encode", function() {
syncPng = picha.encodePngSync(syncImage);
})
});
it("should be the same sync or async", function() {
assert(buffertools.compare(asyncPng, syncPng) == 0);
})
})
assert(picha.Image.bufferCompare(asyncPng, syncPng) === 0);
});
});
describe("round trip", function() {

@@ -66,8 +67,8 @@ it("async match original", function(done) {

});
})
});
it("sync match original", function() {
image = picha.decodePngSync(syncPng);
var image = picha.decodePngSync(syncPng);
assert(image.equalPixels(syncImage));
})
})
})
});
});
});

8

test/resize.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -24,3 +26,3 @@ var fs = require('fs');

});
})
});
it("should sync resize", function() {

@@ -30,3 +32,3 @@ var syncSmall = picha.resizeSync(image, opts);

assert(syncSmall.equalPixels(asyncSmall));
})
})
});
});

31

test/tiff_codec.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -5,3 +7,2 @@ var fs = require('fs');

var assert = require('assert');
var buffertools = require('buffertools');
var picha = require('../index.js');

@@ -42,4 +43,4 @@

assert(syncImage.equalPixels(asyncImage));
})
})
});
});
describe("encode", function() {

@@ -50,12 +51,12 @@ it("should async encode", function(done) {

done(err);
})
});
});
it("should sync encode", function() {
syncTiff = picha.encodeTiffSync(syncImage);
})
});
// It seems lib tiff will write some uninitialized memory into the output file!
// it("should be the same sync or async", function() {
// assert(buffertools.compare(asyncTiff, syncTiff) == 0);
// assert(picha.Image.bufferCompare(asyncTiff, syncTiff) == 0);
// })
})
});
describe("round trip", function() {

@@ -67,8 +68,8 @@ it("async match original", function(done) {

});
})
});
it("sync match original", function() {
var image = picha.decodeTiffSync(syncTiff);
assert(image.equalPixels(syncImage));
})
})
});
});
describe("none compression round trips", function() {

@@ -78,4 +79,4 @@ it("sync match original", function() {

assert(image.equalPixels(asyncImage));
})
})
});
});
describe("deflate compression round trips", function() {

@@ -85,4 +86,4 @@ it("sync match original", function() {

assert(image.equalPixels(asyncImage));
})
})
})
});
});
});

41

test/webp_codec.js

@@ -0,1 +1,3 @@

/*global describe, before, after, it */
"use strict";

@@ -5,3 +7,2 @@ var fs = require('fs');

var assert = require('assert');
var buffertools = require('buffertools');
var picha = require('../index.js');

@@ -42,4 +43,4 @@

assert(syncImage.equalPixels(asyncImage));
})
})
});
});
describe("lossless encode", function() {

@@ -50,10 +51,10 @@ it("should async encode", function(done) {

done(err);
})
});
});
it("should sync encode", function() {
syncWebP = picha.encodeWebPSync(syncImage, { preset: 'lossless' });
})
});
it("should be the same sync or async", function() {
assert(buffertools.compare(asyncWebP, syncWebP) == 0);
})
assert(picha.Image.bufferCompare(asyncWebP, syncWebP) === 0);
});
it("async should match original", function(done) {

@@ -64,8 +65,8 @@ picha.decodeWebP(asyncWebP, function(err, image) {

});
})
});
it("sync should match original", function() {
image = picha.decodeWebPSync(syncWebP);
var image = picha.decodeWebPSync(syncWebP);
assert(image.equalPixels(syncImage));
})
})
});
});
describe("lossey encode", function() {

@@ -76,10 +77,10 @@ it("should async encode", function(done) {

done(err);
})
});
});
it("should sync encode", function() {
syncWebP = picha.encodeWebPSync(syncImage, { quality: 70 });
})
});
it("should be the same sync or async", function() {
assert(buffertools.compare(asyncWebP, syncWebP) == 0);
})
assert(picha.Image.bufferCompare(asyncWebP, syncWebP) === 0);
});
it("async should nearly match original", function(done) {

@@ -90,8 +91,8 @@ picha.decodeWebP(asyncWebP, function(err, image) {

});
})
});
it("sync should nearly match original", function() {
image = picha.decodeWebPSync(syncWebP);
var image = picha.decodeWebPSync(syncWebP);
assert(image.avgChannelDiff(syncImage) < 8);
})
})
})
});
});
});
binding.gyp

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picha.sublime-project

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src/colorconvert.cc

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src/colorconvert.h

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src/jpegcodec.cc

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src/jpegcodec.h

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src/picha.cc

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src/picha.h

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src/pngcodec.cc

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src/pngcodec.h

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src/resize.cc

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src/resize.h

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src/tiffcodec.cc

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src/tiffcodec.h

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src/webpcodec.cc

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src/webpcodec.h

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