diff options
Diffstat (limited to 'vendors/uploadify/com/adobe/images/PNGEncoder.as')
| -rw-r--r-- | vendors/uploadify/com/adobe/images/PNGEncoder.as | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/vendors/uploadify/com/adobe/images/PNGEncoder.as b/vendors/uploadify/com/adobe/images/PNGEncoder.as deleted file mode 100644 index 83c95f629..000000000 --- a/vendors/uploadify/com/adobe/images/PNGEncoder.as +++ /dev/null @@ -1,141 +0,0 @@ -/*
- Copyright (c) 2008, Adobe Systems Incorporated
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are
- met:
-
- * Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- * Neither the name of Adobe Systems Incorporated nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-package com.adobe.images
-{
- import flash.geom.*;
- import flash.display.Bitmap;
- import flash.display.BitmapData;
- import flash.utils.ByteArray;
-
- /**
- * Class that converts BitmapData into a valid PNG
- */
- public class PNGEncoder
- {
- /**
- * Created a PNG image from the specified BitmapData
- *
- * @param image The BitmapData that will be converted into the PNG format.
- * @return a ByteArray representing the PNG encoded image data.
- * @langversion ActionScript 3.0
- * @playerversion Flash 9.0
- * @tiptext
- */
- public static function encode(img:BitmapData):ByteArray {
- // Create output byte array
- var png:ByteArray = new ByteArray();
- // Write PNG signature
- png.writeUnsignedInt(0x89504e47);
- png.writeUnsignedInt(0x0D0A1A0A);
- // Build IHDR chunk
- var IHDR:ByteArray = new ByteArray();
- IHDR.writeInt(img.width);
- IHDR.writeInt(img.height);
- IHDR.writeUnsignedInt(0x08060000); // 32bit RGBA
- IHDR.writeByte(0);
- writeChunk(png,0x49484452,IHDR);
- // Build IDAT chunk
- var IDAT:ByteArray= new ByteArray();
- for(var i:int=0;i < img.height;i++) {
- // no filter
- IDAT.writeByte(0);
- var p:uint;
- var j:int;
- if ( !img.transparent ) {
- for(j=0;j < img.width;j++) {
- p = img.getPixel(j,i);
- IDAT.writeUnsignedInt(
- uint(((p&0xFFFFFF) << 8)|0xFF));
- }
- } else {
- for(j=0;j < img.width;j++) {
- p = img.getPixel32(j,i);
- IDAT.writeUnsignedInt(
- uint(((p&0xFFFFFF) << 8)|
- (p>>>24)));
- }
- }
- }
- IDAT.compress();
- writeChunk(png,0x49444154,IDAT);
- // Build IEND chunk
- writeChunk(png,0x49454E44,null);
- // return PNG
- return png;
- }
-
- private static var crcTable:Array;
- private static var crcTableComputed:Boolean = false;
-
- private static function writeChunk(png:ByteArray,
- type:uint, data:ByteArray):void {
- if (!crcTableComputed) {
- crcTableComputed = true;
- crcTable = [];
- var c:uint;
- for (var n:uint = 0; n < 256; n++) {
- c = n;
- for (var k:uint = 0; k < 8; k++) {
- if (c & 1) {
- c = uint(uint(0xedb88320) ^
- uint(c >>> 1));
- } else {
- c = uint(c >>> 1);
- }
- }
- crcTable[n] = c;
- }
- }
- var len:uint = 0;
- if (data != null) {
- len = data.length;
- }
- png.writeUnsignedInt(len);
- var p:uint = png.position;
- png.writeUnsignedInt(type);
- if ( data != null ) {
- png.writeBytes(data);
- }
- var e:uint = png.position;
- png.position = p;
- c = 0xffffffff;
- for (var i:int = 0; i < (e-p); i++) {
- c = uint(crcTable[
- (c ^ png.readUnsignedByte()) &
- uint(0xff)] ^ uint(c >>> 8));
- }
- c = uint(c^uint(0xffffffff));
- png.position = e;
- png.writeUnsignedInt(c);
- }
- }
-}
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