From da1493b95a2f0b5000a487ae373c9318c58d0b2d Mon Sep 17 00:00:00 2001 From: Cash Costello Date: Sun, 24 Oct 2010 21:08:27 +0000 Subject: partial implementation of flash uploader --- vendors/uploadify/com/adobe/images/BitString.as | 39 ++ vendors/uploadify/com/adobe/images/JPGEncoder.as | 648 +++++++++++++++++++++++ vendors/uploadify/com/adobe/images/PNGEncoder.as | 141 +++++ 3 files changed, 828 insertions(+) create mode 100644 vendors/uploadify/com/adobe/images/BitString.as create mode 100644 vendors/uploadify/com/adobe/images/JPGEncoder.as create mode 100644 vendors/uploadify/com/adobe/images/PNGEncoder.as (limited to 'vendors/uploadify/com/adobe/images') diff --git a/vendors/uploadify/com/adobe/images/BitString.as b/vendors/uploadify/com/adobe/images/BitString.as new file mode 100644 index 000000000..b5c2b8410 --- /dev/null +++ b/vendors/uploadify/com/adobe/images/BitString.as @@ -0,0 +1,39 @@ +/* + 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 +{ + public class BitString + { + public var len:int = 0; + public var val:int = 0; + } +} \ No newline at end of file diff --git a/vendors/uploadify/com/adobe/images/JPGEncoder.as b/vendors/uploadify/com/adobe/images/JPGEncoder.as new file mode 100644 index 000000000..100d7e968 --- /dev/null +++ b/vendors/uploadify/com/adobe/images/JPGEncoder.as @@ -0,0 +1,648 @@ +/* + 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.*; + import flash.utils.*; + + /** + * Class that converts BitmapData into a valid JPEG + */ + public class JPGEncoder + { + + // Static table initialization + + private var ZigZag:Array = [ + 0, 1, 5, 6,14,15,27,28, + 2, 4, 7,13,16,26,29,42, + 3, 8,12,17,25,30,41,43, + 9,11,18,24,31,40,44,53, + 10,19,23,32,39,45,52,54, + 20,22,33,38,46,51,55,60, + 21,34,37,47,50,56,59,61, + 35,36,48,49,57,58,62,63 + ]; + + private var YTable:Array = new Array(64); + private var UVTable:Array = new Array(64); + private var fdtbl_Y:Array = new Array(64); + private var fdtbl_UV:Array = new Array(64); + + private function initQuantTables(sf:int):void + { + var i:int; + var t:Number; + var YQT:Array = [ + 16, 11, 10, 16, 24, 40, 51, 61, + 12, 12, 14, 19, 26, 58, 60, 55, + 14, 13, 16, 24, 40, 57, 69, 56, + 14, 17, 22, 29, 51, 87, 80, 62, + 18, 22, 37, 56, 68,109,103, 77, + 24, 35, 55, 64, 81,104,113, 92, + 49, 64, 78, 87,103,121,120,101, + 72, 92, 95, 98,112,100,103, 99 + ]; + for (i = 0; i < 64; i++) { + t = Math.floor((YQT[i]*sf+50)/100); + if (t < 1) { + t = 1; + } else if (t > 255) { + t = 255; + } + YTable[ZigZag[i]] = t; + } + var UVQT:Array = [ + 17, 18, 24, 47, 99, 99, 99, 99, + 18, 21, 26, 66, 99, 99, 99, 99, + 24, 26, 56, 99, 99, 99, 99, 99, + 47, 66, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99 + ]; + for (i = 0; i < 64; i++) { + t = Math.floor((UVQT[i]*sf+50)/100); + if (t < 1) { + t = 1; + } else if (t > 255) { + t = 255; + } + UVTable[ZigZag[i]] = t; + } + var aasf:Array = [ + 1.0, 1.387039845, 1.306562965, 1.175875602, + 1.0, 0.785694958, 0.541196100, 0.275899379 + ]; + i = 0; + for (var row:int = 0; row < 8; row++) + { + for (var col:int = 0; col < 8; col++) + { + fdtbl_Y[i] = (1.0 / (YTable [ZigZag[i]] * aasf[row] * aasf[col] * 8.0)); + fdtbl_UV[i] = (1.0 / (UVTable[ZigZag[i]] * aasf[row] * aasf[col] * 8.0)); + i++; + } + } + } + + private var YDC_HT:Array; + private var UVDC_HT:Array; + private var YAC_HT:Array; + private var UVAC_HT:Array; + + private function computeHuffmanTbl(nrcodes:Array, std_table:Array):Array + { + var codevalue:int = 0; + var pos_in_table:int = 0; + var HT:Array = new Array(); + for (var k:int=1; k<=16; k++) { + for (var j:int=1; j<=nrcodes[k]; j++) { + HT[std_table[pos_in_table]] = new BitString(); + HT[std_table[pos_in_table]].val = codevalue; + HT[std_table[pos_in_table]].len = k; + pos_in_table++; + codevalue++; + } + codevalue*=2; + } + return HT; + } + + private var std_dc_luminance_nrcodes:Array = [0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0]; + private var std_dc_luminance_values:Array = [0,1,2,3,4,5,6,7,8,9,10,11]; + private var std_ac_luminance_nrcodes:Array = [0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d]; + private var std_ac_luminance_values:Array = [ + 0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12, + 0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07, + 0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08, + 0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0, + 0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16, + 0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28, + 0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39, + 0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49, + 0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59, + 0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69, + 0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79, + 0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89, + 0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98, + 0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7, + 0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6, + 0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5, + 0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4, + 0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2, + 0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea, + 0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8, + 0xf9,0xfa + ]; + + private var std_dc_chrominance_nrcodes:Array = [0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0]; + private var std_dc_chrominance_values:Array = [0,1,2,3,4,5,6,7,8,9,10,11]; + private var std_ac_chrominance_nrcodes:Array = [0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77]; + private var std_ac_chrominance_values:Array = [ + 0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21, + 0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71, + 0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91, + 0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0, + 0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34, + 0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26, + 0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38, + 0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48, + 0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58, + 0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68, + 0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78, + 0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87, + 0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96, + 0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5, + 0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4, + 0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3, + 0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2, + 0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda, + 0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9, + 0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8, + 0xf9,0xfa + ]; + + private function initHuffmanTbl():void + { + YDC_HT = computeHuffmanTbl(std_dc_luminance_nrcodes,std_dc_luminance_values); + UVDC_HT = computeHuffmanTbl(std_dc_chrominance_nrcodes,std_dc_chrominance_values); + YAC_HT = computeHuffmanTbl(std_ac_luminance_nrcodes,std_ac_luminance_values); + UVAC_HT = computeHuffmanTbl(std_ac_chrominance_nrcodes,std_ac_chrominance_values); + } + + private var bitcode:Array = new Array(65535); + private var category:Array = new Array(65535); + + private function initCategoryNumber():void + { + var nrlower:int = 1; + var nrupper:int = 2; + var nr:int; + for (var cat:int=1; cat<=15; cat++) { + //Positive numbers + for (nr=nrlower; nr= 0 ) { + if (value & uint(1 << posval) ) { + bytenew |= uint(1 << bytepos); + } + posval--; + bytepos--; + if (bytepos < 0) { + if (bytenew == 0xFF) { + writeByte(0xFF); + writeByte(0); + } + else { + writeByte(bytenew); + } + bytepos=7; + bytenew=0; + } + } + } + + private function writeByte(value:int):void + { + byteout.writeByte(value); + } + + private function writeWord(value:int):void + { + writeByte((value>>8)&0xFF); + writeByte((value )&0xFF); + } + + // DCT & quantization core + + private function fDCTQuant(data:Array, fdtbl:Array):Array + { + var tmp0:Number, tmp1:Number, tmp2:Number, tmp3:Number, tmp4:Number, tmp5:Number, tmp6:Number, tmp7:Number; + var tmp10:Number, tmp11:Number, tmp12:Number, tmp13:Number; + var z1:Number, z2:Number, z3:Number, z4:Number, z5:Number, z11:Number, z13:Number; + var i:int; + /* Pass 1: process rows. */ + var dataOff:int=0; + for (i=0; i<8; i++) { + tmp0 = data[dataOff+0] + data[dataOff+7]; + tmp7 = data[dataOff+0] - data[dataOff+7]; + tmp1 = data[dataOff+1] + data[dataOff+6]; + tmp6 = data[dataOff+1] - data[dataOff+6]; + tmp2 = data[dataOff+2] + data[dataOff+5]; + tmp5 = data[dataOff+2] - data[dataOff+5]; + tmp3 = data[dataOff+3] + data[dataOff+4]; + tmp4 = data[dataOff+3] - data[dataOff+4]; + + /* Even part */ + tmp10 = tmp0 + tmp3; /* phase 2 */ + tmp13 = tmp0 - tmp3; + tmp11 = tmp1 + tmp2; + tmp12 = tmp1 - tmp2; + + data[dataOff+0] = tmp10 + tmp11; /* phase 3 */ + data[dataOff+4] = tmp10 - tmp11; + + z1 = (tmp12 + tmp13) * 0.707106781; /* c4 */ + data[dataOff+2] = tmp13 + z1; /* phase 5 */ + data[dataOff+6] = tmp13 - z1; + + /* Odd part */ + tmp10 = tmp4 + tmp5; /* phase 2 */ + tmp11 = tmp5 + tmp6; + tmp12 = tmp6 + tmp7; + + /* The rotator is modified from fig 4-8 to avoid extra negations. */ + z5 = (tmp10 - tmp12) * 0.382683433; /* c6 */ + z2 = 0.541196100 * tmp10 + z5; /* c2-c6 */ + z4 = 1.306562965 * tmp12 + z5; /* c2+c6 */ + z3 = tmp11 * 0.707106781; /* c4 */ + + z11 = tmp7 + z3; /* phase 5 */ + z13 = tmp7 - z3; + + data[dataOff+5] = z13 + z2; /* phase 6 */ + data[dataOff+3] = z13 - z2; + data[dataOff+1] = z11 + z4; + data[dataOff+7] = z11 - z4; + + dataOff += 8; /* advance pointer to next row */ + } + + /* Pass 2: process columns. */ + dataOff = 0; + for (i=0; i<8; i++) { + tmp0 = data[dataOff+ 0] + data[dataOff+56]; + tmp7 = data[dataOff+ 0] - data[dataOff+56]; + tmp1 = data[dataOff+ 8] + data[dataOff+48]; + tmp6 = data[dataOff+ 8] - data[dataOff+48]; + tmp2 = data[dataOff+16] + data[dataOff+40]; + tmp5 = data[dataOff+16] - data[dataOff+40]; + tmp3 = data[dataOff+24] + data[dataOff+32]; + tmp4 = data[dataOff+24] - data[dataOff+32]; + + /* Even part */ + tmp10 = tmp0 + tmp3; /* phase 2 */ + tmp13 = tmp0 - tmp3; + tmp11 = tmp1 + tmp2; + tmp12 = tmp1 - tmp2; + + data[dataOff+ 0] = tmp10 + tmp11; /* phase 3 */ + data[dataOff+32] = tmp10 - tmp11; + + z1 = (tmp12 + tmp13) * 0.707106781; /* c4 */ + data[dataOff+16] = tmp13 + z1; /* phase 5 */ + data[dataOff+48] = tmp13 - z1; + + /* Odd part */ + tmp10 = tmp4 + tmp5; /* phase 2 */ + tmp11 = tmp5 + tmp6; + tmp12 = tmp6 + tmp7; + + /* The rotator is modified from fig 4-8 to avoid extra negations. */ + z5 = (tmp10 - tmp12) * 0.382683433; /* c6 */ + z2 = 0.541196100 * tmp10 + z5; /* c2-c6 */ + z4 = 1.306562965 * tmp12 + z5; /* c2+c6 */ + z3 = tmp11 * 0.707106781; /* c4 */ + + z11 = tmp7 + z3; /* phase 5 */ + z13 = tmp7 - z3; + + data[dataOff+40] = z13 + z2; /* phase 6 */ + data[dataOff+24] = z13 - z2; + data[dataOff+ 8] = z11 + z4; + data[dataOff+56] = z11 - z4; + + dataOff++; /* advance pointer to next column */ + } + + // Quantize/descale the coefficients + for (i=0; i<64; i++) { + // Apply the quantization and scaling factor & Round to nearest integer + data[i] = Math.round((data[i]*fdtbl[i])); + } + return data; + } + + // Chunk writing + + private function writeAPP0():void + { + writeWord(0xFFE0); // marker + writeWord(16); // length + writeByte(0x4A); // J + writeByte(0x46); // F + writeByte(0x49); // I + writeByte(0x46); // F + writeByte(0); // = "JFIF",'\0' + writeByte(1); // versionhi + writeByte(1); // versionlo + writeByte(0); // xyunits + writeWord(1); // xdensity + writeWord(1); // ydensity + writeByte(0); // thumbnwidth + writeByte(0); // thumbnheight + } + + private function writeSOF0(width:int, height:int):void + { + writeWord(0xFFC0); // marker + writeWord(17); // length, truecolor YUV JPG + writeByte(8); // precision + writeWord(height); + writeWord(width); + writeByte(3); // nrofcomponents + writeByte(1); // IdY + writeByte(0x11); // HVY + writeByte(0); // QTY + writeByte(2); // IdU + writeByte(0x11); // HVU + writeByte(1); // QTU + writeByte(3); // IdV + writeByte(0x11); // HVV + writeByte(1); // QTV + } + + private function writeDQT():void + { + writeWord(0xFFDB); // marker + writeWord(132); // length + writeByte(0); + var i:int; + for (i=0; i<64; i++) { + writeByte(YTable[i]); + } + writeByte(1); + for (i=0; i<64; i++) { + writeByte(UVTable[i]); + } + } + + private function writeDHT():void + { + writeWord(0xFFC4); // marker + writeWord(0x01A2); // length + var i:int; + + writeByte(0); // HTYDCinfo + for (i=0; i<16; i++) { + writeByte(std_dc_luminance_nrcodes[i+1]); + } + for (i=0; i<=11; i++) { + writeByte(std_dc_luminance_values[i]); + } + + writeByte(0x10); // HTYACinfo + for (i=0; i<16; i++) { + writeByte(std_ac_luminance_nrcodes[i+1]); + } + for (i=0; i<=161; i++) { + writeByte(std_ac_luminance_values[i]); + } + + writeByte(1); // HTUDCinfo + for (i=0; i<16; i++) { + writeByte(std_dc_chrominance_nrcodes[i+1]); + } + for (i=0; i<=11; i++) { + writeByte(std_dc_chrominance_values[i]); + } + + writeByte(0x11); // HTUACinfo + for (i=0; i<16; i++) { + writeByte(std_ac_chrominance_nrcodes[i+1]); + } + for (i=0; i<=161; i++) { + writeByte(std_ac_chrominance_values[i]); + } + } + + private function writeSOS():void + { + writeWord(0xFFDA); // marker + writeWord(12); // length + writeByte(3); // nrofcomponents + writeByte(1); // IdY + writeByte(0); // HTY + writeByte(2); // IdU + writeByte(0x11); // HTU + writeByte(3); // IdV + writeByte(0x11); // HTV + writeByte(0); // Ss + writeByte(0x3f); // Se + writeByte(0); // Bf + } + + // Core processing + private var DU:Array = new Array(64); + + private function processDU(CDU:Array, fdtbl:Array, DC:Number, HTDC:Array, HTAC:Array):Number + { + var EOB:BitString = HTAC[0x00]; + var M16zeroes:BitString = HTAC[0xF0]; + var i:int; + + var DU_DCT:Array = fDCTQuant(CDU, fdtbl); + //ZigZag reorder + for (i=0;i<64;i++) { + DU[ZigZag[i]]=DU_DCT[i]; + } + var Diff:int = DU[0] - DC; DC = DU[0]; + //Encode DC + if (Diff==0) { + writeBits(HTDC[0]); // Diff might be 0 + } else { + writeBits(HTDC[category[32767+Diff]]); + writeBits(bitcode[32767+Diff]); + } + //Encode ACs + var end0pos:int = 63; + for (; (end0pos>0)&&(DU[end0pos]==0); end0pos--) { + }; + //end0pos = first element in reverse order !=0 + if ( end0pos == 0) { + writeBits(EOB); + return DC; + } + i = 1; + while ( i <= end0pos ) { + var startpos:int = i; + for (; (DU[i]==0) && (i<=end0pos); i++) { + } + var nrzeroes:int = i-startpos; + if ( nrzeroes >= 16 ) { + for (var nrmarker:int=1; nrmarker <= nrzeroes/16; nrmarker++) { + writeBits(M16zeroes); + } + nrzeroes = int(nrzeroes&0xF); + } + writeBits(HTAC[nrzeroes*16+category[32767+DU[i]]]); + writeBits(bitcode[32767+DU[i]]); + i++; + } + if ( end0pos != 63 ) { + writeBits(EOB); + } + return DC; + } + + private var YDU:Array = new Array(64); + private var UDU:Array = new Array(64); + private var VDU:Array = new Array(64); + + private function RGB2YUV(img:BitmapData, xpos:int, ypos:int):void + { + var pos:int=0; + for (var y:int=0; y<8; y++) { + for (var x:int=0; x<8; x++) { + var P:uint = img.getPixel32(xpos+x,ypos+y); + var R:Number = Number((P>>16)&0xFF); + var G:Number = Number((P>> 8)&0xFF); + var B:Number = Number((P )&0xFF); + YDU[pos]=((( 0.29900)*R+( 0.58700)*G+( 0.11400)*B))-128; + UDU[pos]=(((-0.16874)*R+(-0.33126)*G+( 0.50000)*B)); + VDU[pos]=((( 0.50000)*R+(-0.41869)*G+(-0.08131)*B)); + pos++; + } + } + } + + /** + * Constructor for JPEGEncoder class + * + * @param quality The quality level between 1 and 100 that detrmines the + * level of compression used in the generated JPEG + * @langversion ActionScript 3.0 + * @playerversion Flash 9.0 + * @tiptext + */ + public function JPGEncoder(quality:Number = 50) + { + if (quality <= 0) { + quality = 1; + } + if (quality > 100) { + quality = 100; + } + var sf:int = 0; + if (quality < 50) { + sf = int(5000 / quality); + } else { + sf = int(200 - quality*2); + } + // Create tables + initHuffmanTbl(); + initCategoryNumber(); + initQuantTables(sf); + } + + /** + * Created a JPEG image from the specified BitmapData + * + * @param image The BitmapData that will be converted into the JPEG format. + * @return a ByteArray representing the JPEG encoded image data. + * @langversion ActionScript 3.0 + * @playerversion Flash 9.0 + * @tiptext + */ + public function encode(image:BitmapData):ByteArray + { + // Initialize bit writer + byteout = new ByteArray(); + bytenew=0; + bytepos=7; + + // Add JPEG headers + writeWord(0xFFD8); // SOI + writeAPP0(); + writeDQT(); + writeSOF0(image.width,image.height); + writeDHT(); + writeSOS(); + + + // Encode 8x8 macroblocks + var DCY:Number=0; + var DCU:Number=0; + var DCV:Number=0; + bytenew=0; + bytepos=7; + for (var ypos:int=0; ypos= 0 ) { + var fillbits:BitString = new BitString(); + fillbits.len = bytepos+1; + fillbits.val = (1<<(bytepos+1))-1; + writeBits(fillbits); + } + + writeWord(0xFFD9); //EOI + return byteout; + } + } +} diff --git a/vendors/uploadify/com/adobe/images/PNGEncoder.as b/vendors/uploadify/com/adobe/images/PNGEncoder.as new file mode 100644 index 000000000..83c95f629 --- /dev/null +++ b/vendors/uploadify/com/adobe/images/PNGEncoder.as @@ -0,0 +1,141 @@ +/* + 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); + } + } +} \ No newline at end of file -- cgit v1.2.3