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Merge branch 'master' of github.com:lukeapage/node-pngjs2

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This commit is contained in:
Luke Page 2015-08-05 23:21:36 +01:00
commit f84416a523
5 changed files with 15 additions and 6 deletions
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12
lib/packer.js
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@ -23,12 +23,16 @@ var Packer = module.exports = function(options) {
util.inherits(Packer, Stream);
Packer.prototype.pack = function(data, width, height) {
Packer.prototype.pack = function(data, width, height, gamma) {
// Signature
this.emit('data', new Buffer(constants.PNG_SIGNATURE));
this.emit('data', this._packIHDR(width, height));
if (gamma) {
this.emit('data', this._packGAMA(gamma));
}
// filter pixel data
//TODO {}
var filter = new Filter(width, height, 4, 8, false, this._options, {});
@ -70,6 +74,12 @@ Packer.prototype._packChunk = function(type, data) {
return buf;
};
Packer.prototype._packGAMA = function(gamma) {
var buf = new Buffer(4);
buf.writeUInt32BE(Math.floor(gamma * 100000), 0); // TODO constant
return this._packChunk(constants.TYPE_gAMA, buf);
};
Packer.prototype._packIHDR = function(width, height) {
var buf = new Buffer(13);

2
lib/parser.js
View file

@ -249,7 +249,7 @@ Parser.prototype._handleGAMA = function(length) {
Parser.prototype._parseGAMA = function(data) {
this._crc.write(data);
this.gamma(data.readUInt32BE(0) / 100000);
this.gamma(data.readUInt32BE(0) / 100000); //TODO constant
this._handleChunkEnd();
};

2
lib/png.js
View file

@ -55,7 +55,7 @@ PNG.prototype.pack = function() {
}
process.nextTick(function() {
this._packer.pack(this.data, this.width, this.height);
this._packer.pack(this.data, this.width, this.height, this.gamma);
}.bind(this));
return this;

2
package.json
View file

@ -1,7 +1,7 @@
{
"name": "pngjs2",
"version": "0.0.3",
"description": "Pure JS PNG encoder/decoder",
"description": "PNG encoder/decoder in pure JS, supporting any bit size & interlace, async & sync with full test suite.",
"contributors": [
"Alexandre Paré",
"Gaurav Mali",

3
test/convert-images.js
View file

@ -57,7 +57,7 @@ module.exports = function(done) {
} else {
var outpng = new PNG();
//PNG.adjustGamma(png);
outpng.gamma = png.gamma;
outpng.data = png.data;
outpng.width = png.width;
outpng.height = png.height;
@ -82,7 +82,6 @@ module.exports = function(done) {
if (expectedError) {
console.log("Async: Error expected, parsed fine ..", file);
}
//this.adjustGamma();
this.pack()
.pipe(