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| // Copyright (c) 2012 Kuba Niegowski
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
'use strict';
var zlib = require('zlib'),
SyncReader = require('./sync-reader'),
FilterSync = require('./filter-sync'),
Parser = require('./parser'),
bitmapper = require('./bitmapper');
var ParserSync = module.exports = function(buffer, options) {
var reader = new SyncReader(buffer);
this._inflateDataList = [];
this._parser = new Parser(options, {
read: reader.read.bind(reader),
error: this._handleError.bind(this),
metadata: this._metaData.bind(this),
gamma: this._gamma.bind(this),
finished: function() {},
inflateData: this._inflateData.bind(this),
createData: this._createData.bind(this)
});
this._options = options;
this._parser.start();
reader.process();
//join together the inflate datas
var inflateData = Buffer.concat(this._inflateDataList);
var data = zlib.inflateSync(inflateData);
data = FilterSync.process(
data,
this._width, this._height,
this._bpp,
this._depth,
this._interlace,
this._options
);
this._data = bitmapper.dataToBitMap(data, this._width, this._height,
this._bpp,
this._depth,
this._interlace);
// todo yuck
this.data = this._parser.reverseFiltered(this._data, this._depth, this._width, this._height);
};
ParserSync.prototype._handleError = function(err) {
this.err = err;
};
ParserSync.prototype._metaData = function(metaData) {
this.metaData = metaData;
};
ParserSync.prototype._gamma = function(gamma) {
this.gamma = gamma;
};
ParserSync.prototype._inflateData = function(data) {
this._inflateDataList.push(data);
};
ParserSync.prototype._createData = function(width, height, bpp, depth, interlace) {
this._data = new Buffer(width * height * 4);
this._bpp = bpp;
this._width = width;
this._height = height;
this._depth = depth;
this._interlace = interlace;
return this._data;
};
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