[44] | 1 | <?php
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| 2 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 3 | // GIF Util - (C) 2003 Yamasoft (S/C)
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| 4 | // http://www.yamasoft.com
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| 5 | // All Rights Reserved
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| 6 | // This file can be freely copied, distributed, modified, updated by anyone under the only
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| 7 | // condition to leave the original address (Yamasoft, http://www.yamasoft.com) and this header.
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| 8 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 9 | // <gif> = gif_loadFile(filename, [index])
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| 10 | // <bool> = gif_getSize(<gif> or filename, &width, &height)
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| 11 | // <bool> = gif_outputAsPng(<gif>, filename, [bgColor])
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| 12 | // <bool> = gif_outputAsBmp(<gif>, filename, [bgcolor])
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| 13 | // <bool> = gif_outputAsJpeg(<gif>, filename, [bgcolor]) - use cjpeg if available otherwise uses GD
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| 14 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 15 | // Original code by Fabien Ezber
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| 16 | // Modified by James Heinrich <info@silisoftware.com> for use in phpThumb() - December 10, 2003
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| 17 | // * Added function gif_loadFileToGDimageResource() - this returns a GD image resource
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| 18 | // * Modified gif_outputAsJpeg() to check if it's running under Windows, or if cjpeg is not
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| 19 | // available, in which case it will attempt to output JPEG using GD functions
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| 20 | // * added @ error-suppression to two lines where it checks: if ($this->m_img->m_bTrans)
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| 21 | // otherwise warnings are generated if error_reporting == E_ALL
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| 22 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 23 |
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| 24 | function gif_loadFile($lpszFileName, $iIndex = 0)
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| 25 | {
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| 26 | $gif = new CGIF();
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| 27 | if ($gif->loadFile($lpszFileName, $iIndex)) {
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| 28 | return $gif;
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| 29 | }
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| 30 | return false;
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| 31 | }
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| 32 |
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| 33 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 34 |
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| 35 | // Added by James Heinrich <info@silisoftware.com> - December 10, 2003
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| 36 | function gif_loadFileToGDimageResource($gifFilename, $bgColor = -1)
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| 37 | {
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| 38 | if ($gif = gif_loadFile($gifFilename)) {
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| 39 |
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| 40 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) {
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| 41 | // shouldn't take nearly this long
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| 42 | set_time_limit(120);
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| 43 | }
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| 44 | // general strategy: convert raw data to PNG then convert PNG data to GD image resource
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| 45 | $PNGdata = $gif->getPng($bgColor);
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| 46 | if ($img = @ImageCreateFromString($PNGdata)) {
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| 47 |
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| 48 | // excellent - PNG image data successfully converted to GD image
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| 49 | return $img;
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| 50 |
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| 51 | } elseif ($img = $gif->getGD_PixelPlotterVersion()) {
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| 52 |
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| 53 | // problem: ImageCreateFromString() didn't like the PNG image data.
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| 54 | // This has been known to happen in PHP v4.0.6
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| 55 | // solution: take the raw image data and create a new GD image and plot
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| 56 | // pixel-by-pixel on the GD image. This is extremely slow, but it does
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| 57 | // work and a slow solution is better than no solution, right? :)
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| 58 | return $img;
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| 59 |
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| 60 | }
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| 61 | }
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| 62 | return false;
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| 63 | }
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| 64 |
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| 65 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 66 |
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| 67 | function gif_outputAsBmp($gif, $lpszFileName, $bgColor = -1)
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| 68 | {
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| 69 | if (!isSet($gif) || (@get_class($gif) <> 'cgif') || !$gif->loaded() || ($lpszFileName == '')) {
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| 70 | return false;
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| 71 | }
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| 72 |
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| 73 | $fd = $gif->getBmp($bgColor);
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| 74 | if (strlen($fd) <= 0) {
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| 75 | return false;
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| 76 | }
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| 77 |
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| 78 | if (!($fh = @fopen($lpszFileName, 'wb'))) {
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| 79 | return false;
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| 80 | }
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| 81 | @fwrite($fh, $fd, strlen($fd));
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| 82 | @fflush($fh);
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| 83 | @fclose($fh);
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| 84 | return true;
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| 85 | }
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| 86 |
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| 87 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 88 |
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| 89 | function gif_outputAsPng($gif, $lpszFileName, $bgColor = -1)
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| 90 | {
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| 91 | if (!isSet($gif) || (@get_class($gif) <> 'cgif') || !$gif->loaded() || ($lpszFileName == '')) {
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| 92 | return false;
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| 93 | }
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| 94 |
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| 95 | $fd = $gif->getPng($bgColor);
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| 96 | if (strlen($fd) <= 0) {
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| 97 | return false;
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| 98 | }
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| 99 |
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| 100 | if (!($fh = @fopen($lpszFileName, 'wb'))) {
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| 101 | return false;
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| 102 | }
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| 103 | @fwrite($fh, $fd, strlen($fd));
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| 104 | @fflush($fh);
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| 105 | @fclose($fh);
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| 106 | return true;
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| 107 | }
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| 108 |
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| 109 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 110 |
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| 111 | function gif_outputAsJpeg($gif, $lpszFileName, $bgColor = -1)
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| 112 | {
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| 113 | // JPEG output that does not require cjpeg added by James Heinrich <info@silisoftware.com> - December 10, 2003
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| 114 | if ((strtoupper(substr(PHP_OS, 0, 3)) != 'WIN') && (file_exists('/usr/local/bin/cjpeg') || `which cjpeg`)) {
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| 115 |
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| 116 | if (gif_outputAsBmp($gif, $lpszFileName.'.bmp', $bgColor)) {
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| 117 | exec('cjpeg '.$lpszFileName.'.bmp >'.$lpszFileName.' 2>/dev/null');
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| 118 | @unLink($lpszFileName.'.bmp');
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| 119 |
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| 120 | if (@file_exists($lpszFileName)) {
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| 121 | if (@fileSize($lpszFileName) > 0) {
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| 122 | return true;
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| 123 | }
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| 124 |
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| 125 | @unLink($lpszFileName);
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | } else {
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| 130 |
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| 131 | // either Windows, or cjpeg not found in path
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| 132 | if ($img = @ImageCreateFromString($gif->getPng($bgColor))) {
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| 133 | if (@ImageJPEG($img, $lpszFileName)) {
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| 134 | return true;
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | }
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| 139 |
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| 140 | return false;
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| 141 | }
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| 142 |
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| 143 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 144 |
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| 145 | function gif_getSize($gif, &$width, &$height)
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| 146 | {
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| 147 | if (isSet($gif) && (@get_class($gif) == 'cgif') && $gif->loaded()) {
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| 148 | $width = $gif->width();
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| 149 | $height = $gif->height();
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| 150 | } elseif (@file_exists($gif)) {
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| 151 | $myGIF = new CGIF();
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| 152 | if (!$myGIF->getSize($gif, $width, $height)) {
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| 153 | return false;
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| 154 | }
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| 155 | } else {
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| 156 | return false;
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| 157 | }
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| 158 |
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| 159 | return true;
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| 160 | }
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| 161 |
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| 162 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 163 |
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| 164 | class CGIFLZW
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| 165 | {
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| 166 | var $MAX_LZW_BITS;
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| 167 | var $Fresh, $CodeSize, $SetCodeSize, $MaxCode, $MaxCodeSize, $FirstCode, $OldCode;
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| 168 | var $ClearCode, $EndCode, $Next, $Vals, $Stack, $sp, $Buf, $CurBit, $LastBit, $Done, $LastByte;
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| 169 |
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| 170 | ///////////////////////////////////////////////////////////////////////////
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| 171 |
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| 172 | // CONSTRUCTOR
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| 173 | function CGIFLZW()
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| 174 | {
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| 175 | $this->MAX_LZW_BITS = 12;
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| 176 | unSet($this->Next);
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| 177 | unSet($this->Vals);
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| 178 | unSet($this->Stack);
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| 179 | unSet($this->Buf);
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| 180 |
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| 181 | $this->Next = range(0, (1 << $this->MAX_LZW_BITS) - 1);
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| 182 | $this->Vals = range(0, (1 << $this->MAX_LZW_BITS) - 1);
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| 183 | $this->Stack = range(0, (1 << ($this->MAX_LZW_BITS + 1)) - 1);
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| 184 | $this->Buf = range(0, 279);
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| 185 | }
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| 186 |
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| 187 | ///////////////////////////////////////////////////////////////////////////
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| 188 |
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| 189 | function deCompress($data, &$datLen)
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| 190 | {
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| 191 | $stLen = strlen($data);
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| 192 | $datLen = 0;
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| 193 | $ret = '';
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| 194 |
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| 195 | // INITIALIZATION
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| 196 | $this->LZWCommand($data, true);
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| 197 |
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| 198 | while (($iIndex = $this->LZWCommand($data, false)) >= 0) {
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| 199 | $ret .= chr($iIndex);
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| 200 | }
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| 201 |
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| 202 | $datLen = $stLen - strlen($data);
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| 203 |
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| 204 | if ($iIndex != -2) {
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| 205 | return false;
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| 206 | }
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| 207 |
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| 208 | return $ret;
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| 209 | }
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| 210 |
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| 211 | ///////////////////////////////////////////////////////////////////////////
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| 212 |
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| 213 | function LZWCommand(&$data, $bInit)
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| 214 | {
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| 215 | if ($bInit) {
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| 216 | $this->SetCodeSize = ord($data{0});
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| 217 | $data = substr($data, 1);
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| 218 |
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| 219 | $this->CodeSize = $this->SetCodeSize + 1;
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| 220 | $this->ClearCode = 1 << $this->SetCodeSize;
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| 221 | $this->EndCode = $this->ClearCode + 1;
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| 222 | $this->MaxCode = $this->ClearCode + 2;
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| 223 | $this->MaxCodeSize = $this->ClearCode << 1;
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| 224 |
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| 225 | $this->GetCode($data, $bInit);
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| 226 |
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| 227 | $this->Fresh = 1;
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| 228 | for ($i = 0; $i < $this->ClearCode; $i++) {
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| 229 | $this->Next[$i] = 0;
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| 230 | $this->Vals[$i] = $i;
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| 231 | }
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| 232 |
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| 233 | for (; $i < (1 << $this->MAX_LZW_BITS); $i++) {
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| 234 | $this->Next[$i] = 0;
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| 235 | $this->Vals[$i] = 0;
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| 236 | }
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| 237 |
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| 238 | $this->sp = 0;
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| 239 | return 1;
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| 240 | }
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| 241 |
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| 242 | if ($this->Fresh) {
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| 243 | $this->Fresh = 0;
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| 244 | do {
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| 245 | $this->FirstCode = $this->GetCode($data, $bInit);
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| 246 | $this->OldCode = $this->FirstCode;
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| 247 | }
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| 248 | while ($this->FirstCode == $this->ClearCode);
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| 249 |
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| 250 | return $this->FirstCode;
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| 251 | }
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| 252 |
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| 253 | if ($this->sp > 0) {
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| 254 | $this->sp--;
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| 255 | return $this->Stack[$this->sp];
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| 256 | }
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| 257 |
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| 258 | while (($Code = $this->GetCode($data, $bInit)) >= 0) {
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| 259 | if ($Code == $this->ClearCode) {
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| 260 | for ($i = 0; $i < $this->ClearCode; $i++) {
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| 261 | $this->Next[$i] = 0;
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| 262 | $this->Vals[$i] = $i;
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| 263 | }
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| 264 |
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| 265 | for (; $i < (1 << $this->MAX_LZW_BITS); $i++) {
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| 266 | $this->Next[$i] = 0;
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| 267 | $this->Vals[$i] = 0;
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| 268 | }
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| 269 |
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| 270 | $this->CodeSize = $this->SetCodeSize + 1;
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| 271 | $this->MaxCodeSize = $this->ClearCode << 1;
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| 272 | $this->MaxCode = $this->ClearCode + 2;
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| 273 | $this->sp = 0;
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| 274 | $this->FirstCode = $this->GetCode($data, $bInit);
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| 275 | $this->OldCode = $this->FirstCode;
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| 276 |
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| 277 | return $this->FirstCode;
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| 278 | }
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| 279 |
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| 280 | if ($Code == $this->EndCode) {
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| 281 | return -2;
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| 282 | }
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| 283 |
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| 284 | $InCode = $Code;
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| 285 | if ($Code >= $this->MaxCode) {
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| 286 | $this->Stack[$this->sp] = $this->FirstCode;
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| 287 | $this->sp++;
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| 288 | $Code = $this->OldCode;
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| 289 | }
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| 290 |
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| 291 | while ($Code >= $this->ClearCode) {
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| 292 | $this->Stack[$this->sp] = $this->Vals[$Code];
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| 293 | $this->sp++;
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| 294 |
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| 295 | if ($Code == $this->Next[$Code]) // Circular table entry, big GIF Error!
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| 296 | return -1;
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| 297 |
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| 298 | $Code = $this->Next[$Code];
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| 299 | }
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| 300 |
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| 301 | $this->FirstCode = $this->Vals[$Code];
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| 302 | $this->Stack[$this->sp] = $this->FirstCode;
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| 303 | $this->sp++;
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| 304 |
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| 305 | if (($Code = $this->MaxCode) < (1 << $this->MAX_LZW_BITS)) {
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| 306 | $this->Next[$Code] = $this->OldCode;
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| 307 | $this->Vals[$Code] = $this->FirstCode;
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| 308 | $this->MaxCode++;
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| 309 |
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| 310 | if (($this->MaxCode >= $this->MaxCodeSize) && ($this->MaxCodeSize < (1 << $this->MAX_LZW_BITS))) {
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| 311 | $this->MaxCodeSize *= 2;
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| 312 | $this->CodeSize++;
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| 313 | }
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| 314 | }
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| 315 |
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| 316 | $this->OldCode = $InCode;
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| 317 | if ($this->sp > 0) {
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| 318 | $this->sp--;
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| 319 | return $this->Stack[$this->sp];
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| 320 | }
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| 321 | }
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| 322 |
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| 323 | return $Code;
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| 324 | }
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| 325 |
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| 326 | ///////////////////////////////////////////////////////////////////////////
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| 327 |
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| 328 | function GetCode(&$data, $bInit)
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| 329 | {
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| 330 | if ($bInit) {
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| 331 | $this->CurBit = 0;
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| 332 | $this->LastBit = 0;
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| 333 | $this->Done = 0;
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| 334 | $this->LastByte = 2;
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| 335 | return 1;
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| 336 | }
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| 337 |
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| 338 | if (($this->CurBit + $this->CodeSize) >= $this->LastBit) {
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| 339 | if ($this->Done) {
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| 340 | if ($this->CurBit >= $this->LastBit) {
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| 341 | // Ran off the end of my bits
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| 342 | return 0;
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| 343 | }
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| 344 | return -1;
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| 345 | }
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| 346 |
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| 347 | $this->Buf[0] = $this->Buf[$this->LastByte - 2];
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| 348 | $this->Buf[1] = $this->Buf[$this->LastByte - 1];
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| 349 |
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| 350 | $Count = ord($data{0});
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| 351 | $data = substr($data, 1);
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| 352 |
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| 353 | if ($Count) {
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| 354 | for ($i = 0; $i < $Count; $i++) {
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| 355 | $this->Buf[2 + $i] = ord($data{$i});
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| 356 | }
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| 357 | $data = substr($data, $Count);
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| 358 | } else {
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| 359 | $this->Done = 1;
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| 360 | }
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| 361 |
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| 362 | $this->LastByte = 2 + $Count;
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| 363 | $this->CurBit = ($this->CurBit - $this->LastBit) + 16;
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| 364 | $this->LastBit = (2 + $Count) << 3;
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| 365 | }
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| 366 |
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| 367 | $iRet = 0;
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| 368 | for ($i = $this->CurBit, $j = 0; $j < $this->CodeSize; $i++, $j++) {
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| 369 | $iRet |= (($this->Buf[intval($i / 8)] & (1 << ($i % 8))) != 0) << $j;
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| 370 | }
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| 371 |
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| 372 | $this->CurBit += $this->CodeSize;
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| 373 | return $iRet;
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| 374 | }
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| 375 | }
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| 376 |
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| 377 | ///////////////////////////////////////////////////////////////////////////////////////////////////
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| 378 |
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| 379 | class CGIFCOLORTABLE
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| 380 | {
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| 381 | var $m_nColors;
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| 382 | var $m_arColors;
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| 383 |
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| 384 | ///////////////////////////////////////////////////////////////////////////
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| 385 |
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| 386 | // CONSTRUCTOR
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| 387 | function CGIFCOLORTABLE()
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| 388 | {
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| 389 | unSet($this->m_nColors);
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| 390 | unSet($this->m_arColors);
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| 391 | }
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| 392 |
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| 393 | ///////////////////////////////////////////////////////////////////////////
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| 394 |
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| 395 | function load($lpData, $num)
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| 396 | {
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| 397 | $this->m_nColors = 0;
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| 398 | $this->m_arColors = array();
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| 399 |
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| 400 | for ($i = 0; $i < $num; $i++) {
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| 401 | $rgb = substr($lpData, $i * 3, 3);
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| 402 | if (strlen($rgb) < 3) {
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| 403 | return false;
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| 404 | }
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| 405 |
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| 406 | $this->m_arColors[] = (ord($rgb{2}) << 16) + (ord($rgb{1}) << 8) + ord($rgb{0});
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| 407 | $this->m_nColors++;
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| 408 | }
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| 409 |
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| 410 | return true;
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| 411 | }
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| 412 |
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| 413 | ///////////////////////////////////////////////////////////////////////////
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| 414 |
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| 415 | function toString()
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| 416 | {
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| 417 | $ret = '';
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| 418 |
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| 419 | for ($i = 0; $i < $this->m_nColors; $i++) {
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| 420 | $ret .=
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| 421 | chr(($this->m_arColors[$i] & 0x000000FF)) . // R
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| 422 | chr(($this->m_arColors[$i] & 0x0000FF00) >> 8) . // G
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| 423 | chr(($this->m_arColors[$i] & 0x00FF0000) >> 16); // B
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| 424 | }
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| 425 |
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| 426 | return $ret;
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| 427 | }
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| 428 |
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| 429 | ///////////////////////////////////////////////////////////////////////////
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| 430 |
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| 431 | function toRGBQuad()
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| 432 | {
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| 433 | $ret = '';
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| 434 |
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| 435 | for ($i = 0; $i < $this->m_nColors; $i++) {
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| 436 | $ret .=
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| 437 | chr(($this->m_arColors[$i] & 0x00FF0000) >> 16) . // B
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| 438 | chr(($this->m_arColors[$i] & 0x0000FF00) >> 8) . // G
|
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| 439 | chr(($this->m_arColors[$i] & 0x000000FF)) . // R
|
---|
| 440 | "\x00";
|
---|
| 441 | }
|
---|
| 442 |
|
---|
| 443 | return $ret;
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 447 |
|
---|
| 448 | function colorIndex($rgb)
|
---|
| 449 | {
|
---|
| 450 | $rgb = intval($rgb) & 0xFFFFFF;
|
---|
| 451 | $r1 = ($rgb & 0x0000FF);
|
---|
| 452 | $g1 = ($rgb & 0x00FF00) >> 8;
|
---|
| 453 | $b1 = ($rgb & 0xFF0000) >> 16;
|
---|
| 454 | $idx = -1;
|
---|
| 455 |
|
---|
| 456 | for ($i = 0; $i < $this->m_nColors; $i++) {
|
---|
| 457 | $r2 = ($this->m_arColors[$i] & 0x000000FF);
|
---|
| 458 | $g2 = ($this->m_arColors[$i] & 0x0000FF00) >> 8;
|
---|
| 459 | $b2 = ($this->m_arColors[$i] & 0x00FF0000) >> 16;
|
---|
| 460 | $d = abs($r2 - $r1) + abs($g2 - $g1) + abs($b2 - $b1);
|
---|
| 461 |
|
---|
| 462 | if (($idx == -1) || ($d < $dif)) {
|
---|
| 463 | $idx = $i;
|
---|
| 464 | $dif = $d;
|
---|
| 465 | }
|
---|
| 466 | }
|
---|
| 467 |
|
---|
| 468 | return $idx;
|
---|
| 469 | }
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | ///////////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 473 |
|
---|
| 474 | class CGIFFILEHEADER
|
---|
| 475 | {
|
---|
| 476 | var $m_lpVer;
|
---|
| 477 | var $m_nWidth;
|
---|
| 478 | var $m_nHeight;
|
---|
| 479 | var $m_bGlobalClr;
|
---|
| 480 | var $m_nColorRes;
|
---|
| 481 | var $m_bSorted;
|
---|
| 482 | var $m_nTableSize;
|
---|
| 483 | var $m_nBgColor;
|
---|
| 484 | var $m_nPixelRatio;
|
---|
| 485 | var $m_colorTable;
|
---|
| 486 |
|
---|
| 487 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 488 |
|
---|
| 489 | // CONSTRUCTOR
|
---|
| 490 | function CGIFFILEHEADER()
|
---|
| 491 | {
|
---|
| 492 | unSet($this->m_lpVer);
|
---|
| 493 | unSet($this->m_nWidth);
|
---|
| 494 | unSet($this->m_nHeight);
|
---|
| 495 | unSet($this->m_bGlobalClr);
|
---|
| 496 | unSet($this->m_nColorRes);
|
---|
| 497 | unSet($this->m_bSorted);
|
---|
| 498 | unSet($this->m_nTableSize);
|
---|
| 499 | unSet($this->m_nBgColor);
|
---|
| 500 | unSet($this->m_nPixelRatio);
|
---|
| 501 | unSet($this->m_colorTable);
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 505 |
|
---|
| 506 | function load($lpData, &$hdrLen)
|
---|
| 507 | {
|
---|
| 508 | $hdrLen = 0;
|
---|
| 509 |
|
---|
| 510 | $this->m_lpVer = substr($lpData, 0, 6);
|
---|
| 511 | if (($this->m_lpVer <> 'GIF87a') && ($this->m_lpVer <> 'GIF89a')) {
|
---|
| 512 | return false;
|
---|
| 513 | }
|
---|
| 514 |
|
---|
| 515 | $this->m_nWidth = $this->w2i(substr($lpData, 6, 2));
|
---|
| 516 | $this->m_nHeight = $this->w2i(substr($lpData, 8, 2));
|
---|
| 517 | if (!$this->m_nWidth || !$this->m_nHeight) {
|
---|
| 518 | return false;
|
---|
| 519 | }
|
---|
| 520 |
|
---|
| 521 | $b = ord(substr($lpData, 10, 1));
|
---|
| 522 | $this->m_bGlobalClr = ($b & 0x80) ? true : false;
|
---|
| 523 | $this->m_nColorRes = ($b & 0x70) >> 4;
|
---|
| 524 | $this->m_bSorted = ($b & 0x08) ? true : false;
|
---|
| 525 | $this->m_nTableSize = 2 << ($b & 0x07);
|
---|
| 526 | $this->m_nBgColor = ord(substr($lpData, 11, 1));
|
---|
| 527 | $this->m_nPixelRatio = ord(substr($lpData, 12, 1));
|
---|
| 528 | $hdrLen = 13;
|
---|
| 529 |
|
---|
| 530 | if ($this->m_bGlobalClr) {
|
---|
| 531 | $this->m_colorTable = new CGIFCOLORTABLE();
|
---|
| 532 | if (!$this->m_colorTable->load(substr($lpData, $hdrLen), $this->m_nTableSize)) {
|
---|
| 533 | return false;
|
---|
| 534 | }
|
---|
| 535 | $hdrLen += 3 * $this->m_nTableSize;
|
---|
| 536 | }
|
---|
| 537 |
|
---|
| 538 | return true;
|
---|
| 539 | }
|
---|
| 540 |
|
---|
| 541 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 542 |
|
---|
| 543 | function w2i($str)
|
---|
| 544 | {
|
---|
| 545 | return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
|
---|
| 546 | }
|
---|
| 547 | }
|
---|
| 548 |
|
---|
| 549 | ///////////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 550 |
|
---|
| 551 | class CGIFIMAGEHEADER
|
---|
| 552 | {
|
---|
| 553 | var $m_nLeft;
|
---|
| 554 | var $m_nTop;
|
---|
| 555 | var $m_nWidth;
|
---|
| 556 | var $m_nHeight;
|
---|
| 557 | var $m_bLocalClr;
|
---|
| 558 | var $m_bInterlace;
|
---|
| 559 | var $m_bSorted;
|
---|
| 560 | var $m_nTableSize;
|
---|
| 561 | var $m_colorTable;
|
---|
| 562 |
|
---|
| 563 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 564 |
|
---|
| 565 | // CONSTRUCTOR
|
---|
| 566 | function CGIFIMAGEHEADER()
|
---|
| 567 | {
|
---|
| 568 | unSet($this->m_nLeft);
|
---|
| 569 | unSet($this->m_nTop);
|
---|
| 570 | unSet($this->m_nWidth);
|
---|
| 571 | unSet($this->m_nHeight);
|
---|
| 572 | unSet($this->m_bLocalClr);
|
---|
| 573 | unSet($this->m_bInterlace);
|
---|
| 574 | unSet($this->m_bSorted);
|
---|
| 575 | unSet($this->m_nTableSize);
|
---|
| 576 | unSet($this->m_colorTable);
|
---|
| 577 | }
|
---|
| 578 |
|
---|
| 579 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 580 |
|
---|
| 581 | function load($lpData, &$hdrLen)
|
---|
| 582 | {
|
---|
| 583 | $hdrLen = 0;
|
---|
| 584 |
|
---|
| 585 | $this->m_nLeft = $this->w2i(substr($lpData, 0, 2));
|
---|
| 586 | $this->m_nTop = $this->w2i(substr($lpData, 2, 2));
|
---|
| 587 | $this->m_nWidth = $this->w2i(substr($lpData, 4, 2));
|
---|
| 588 | $this->m_nHeight = $this->w2i(substr($lpData, 6, 2));
|
---|
| 589 |
|
---|
| 590 | if (!$this->m_nWidth || !$this->m_nHeight) {
|
---|
| 591 | return false;
|
---|
| 592 | }
|
---|
| 593 |
|
---|
| 594 | $b = ord($lpData{8});
|
---|
| 595 | $this->m_bLocalClr = ($b & 0x80) ? true : false;
|
---|
| 596 | $this->m_bInterlace = ($b & 0x40) ? true : false;
|
---|
| 597 | $this->m_bSorted = ($b & 0x20) ? true : false;
|
---|
| 598 | $this->m_nTableSize = 2 << ($b & 0x07);
|
---|
| 599 | $hdrLen = 9;
|
---|
| 600 |
|
---|
| 601 | if ($this->m_bLocalClr) {
|
---|
| 602 | $this->m_colorTable = new CGIFCOLORTABLE();
|
---|
| 603 | if (!$this->m_colorTable->load(substr($lpData, $hdrLen), $this->m_nTableSize)) {
|
---|
| 604 | return false;
|
---|
| 605 | }
|
---|
| 606 | $hdrLen += 3 * $this->m_nTableSize;
|
---|
| 607 | }
|
---|
| 608 |
|
---|
| 609 | return true;
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 613 |
|
---|
| 614 | function w2i($str)
|
---|
| 615 | {
|
---|
| 616 | return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
|
---|
| 617 | }
|
---|
| 618 | }
|
---|
| 619 |
|
---|
| 620 | ///////////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 621 |
|
---|
| 622 | class CGIFIMAGE
|
---|
| 623 | {
|
---|
| 624 | var $m_disp;
|
---|
| 625 | var $m_bUser;
|
---|
| 626 | var $m_bTrans;
|
---|
| 627 | var $m_nDelay;
|
---|
| 628 | var $m_nTrans;
|
---|
| 629 | var $m_lpComm;
|
---|
| 630 | var $m_gih;
|
---|
| 631 | var $m_data;
|
---|
| 632 | var $m_lzw;
|
---|
| 633 |
|
---|
| 634 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 635 |
|
---|
| 636 | function CGIFIMAGE()
|
---|
| 637 | {
|
---|
| 638 | unSet($this->m_disp);
|
---|
| 639 | unSet($this->m_bUser);
|
---|
| 640 | unSet($this->m_bTrans);
|
---|
| 641 | unSet($this->m_nDelay);
|
---|
| 642 | unSet($this->m_nTrans);
|
---|
| 643 | unSet($this->m_lpComm);
|
---|
| 644 | unSet($this->m_data);
|
---|
| 645 | $this->m_gih = new CGIFIMAGEHEADER();
|
---|
| 646 | $this->m_lzw = new CGIFLZW();
|
---|
| 647 | }
|
---|
| 648 |
|
---|
| 649 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 650 |
|
---|
| 651 | function load($data, &$datLen)
|
---|
| 652 | {
|
---|
| 653 | $datLen = 0;
|
---|
| 654 |
|
---|
| 655 | while (true) {
|
---|
| 656 | $b = ord($data{0});
|
---|
| 657 | $data = substr($data, 1);
|
---|
| 658 | $datLen++;
|
---|
| 659 |
|
---|
| 660 | switch($b) {
|
---|
| 661 | case 0x21: // Extension
|
---|
| 662 | if (!$this->skipExt($data, $len = 0)) {
|
---|
| 663 | return false;
|
---|
| 664 | }
|
---|
| 665 | $datLen += $len;
|
---|
| 666 | break;
|
---|
| 667 |
|
---|
| 668 | case 0x2C: // Image
|
---|
| 669 | // LOAD HEADER & COLOR TABLE
|
---|
| 670 | if (!$this->m_gih->load($data, $len = 0)) {
|
---|
| 671 | return false;
|
---|
| 672 | }
|
---|
| 673 | $data = substr($data, $len);
|
---|
| 674 | $datLen += $len;
|
---|
| 675 |
|
---|
| 676 | // ALLOC BUFFER
|
---|
| 677 | if (!($this->m_data = $this->m_lzw->deCompress($data, $len = 0))) {
|
---|
| 678 | return false;
|
---|
| 679 | }
|
---|
| 680 | $data = substr($data, $len);
|
---|
| 681 | $datLen += $len;
|
---|
| 682 |
|
---|
| 683 | if ($this->m_gih->m_bInterlace) {
|
---|
| 684 | $this->deInterlace();
|
---|
| 685 | }
|
---|
| 686 | return true;
|
---|
| 687 |
|
---|
| 688 | case 0x3B: // EOF
|
---|
| 689 | default:
|
---|
| 690 | return false;
|
---|
| 691 | }
|
---|
| 692 | }
|
---|
| 693 | return false;
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 697 |
|
---|
| 698 | function skipExt(&$data, &$extLen)
|
---|
| 699 | {
|
---|
| 700 | $extLen = 0;
|
---|
| 701 |
|
---|
| 702 | $b = ord($data{0});
|
---|
| 703 | $data = substr($data, 1);
|
---|
| 704 | $extLen++;
|
---|
| 705 |
|
---|
| 706 | switch($b) {
|
---|
| 707 | case 0xF9: // Graphic Control
|
---|
| 708 | $b = ord($data{1});
|
---|
| 709 | $this->m_disp = ($b & 0x1C) >> 2;
|
---|
| 710 | $this->m_bUser = ($b & 0x02) ? true : false;
|
---|
| 711 | $this->m_bTrans = ($b & 0x01) ? true : false;
|
---|
| 712 | $this->m_nDelay = $this->w2i(substr($data, 2, 2));
|
---|
| 713 | $this->m_nTrans = ord($data{4});
|
---|
| 714 | break;
|
---|
| 715 |
|
---|
| 716 | case 0xFE: // Comment
|
---|
| 717 | $this->m_lpComm = substr($data, 1, ord($data{0}));
|
---|
| 718 | break;
|
---|
| 719 |
|
---|
| 720 | case 0x01: // Plain text
|
---|
| 721 | break;
|
---|
| 722 |
|
---|
| 723 | case 0xFF: // Application
|
---|
| 724 | break;
|
---|
| 725 | }
|
---|
| 726 |
|
---|
| 727 | // SKIP DEFAULT AS DEFS MAY CHANGE
|
---|
| 728 | $b = ord($data{0});
|
---|
| 729 | $data = substr($data, 1);
|
---|
| 730 | $extLen++;
|
---|
| 731 | while ($b > 0) {
|
---|
| 732 | $data = substr($data, $b);
|
---|
| 733 | $extLen += $b;
|
---|
| 734 | $b = ord($data{0});
|
---|
| 735 | $data = substr($data, 1);
|
---|
| 736 | $extLen++;
|
---|
| 737 | }
|
---|
| 738 | return true;
|
---|
| 739 | }
|
---|
| 740 |
|
---|
| 741 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 742 |
|
---|
| 743 | function w2i($str)
|
---|
| 744 | {
|
---|
| 745 | return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 749 |
|
---|
| 750 | function deInterlace()
|
---|
| 751 | {
|
---|
| 752 | $data = $this->m_data;
|
---|
| 753 |
|
---|
| 754 | for ($i = 0; $i < 4; $i++) {
|
---|
| 755 | switch($i) {
|
---|
| 756 | case 0:
|
---|
| 757 | $s = 8;
|
---|
| 758 | $y = 0;
|
---|
| 759 | break;
|
---|
| 760 |
|
---|
| 761 | case 1:
|
---|
| 762 | $s = 8;
|
---|
| 763 | $y = 4;
|
---|
| 764 | break;
|
---|
| 765 |
|
---|
| 766 | case 2:
|
---|
| 767 | $s = 4;
|
---|
| 768 | $y = 2;
|
---|
| 769 | break;
|
---|
| 770 |
|
---|
| 771 | case 3:
|
---|
| 772 | $s = 2;
|
---|
| 773 | $y = 1;
|
---|
| 774 | break;
|
---|
| 775 | }
|
---|
| 776 |
|
---|
| 777 | for (; $y < $this->m_gih->m_nHeight; $y += $s) {
|
---|
| 778 | $lne = substr($this->m_data, 0, $this->m_gih->m_nWidth);
|
---|
| 779 | $this->m_data = substr($this->m_data, $this->m_gih->m_nWidth);
|
---|
| 780 |
|
---|
| 781 | $data =
|
---|
| 782 | substr($data, 0, $y * $this->m_gih->m_nWidth) .
|
---|
| 783 | $lne .
|
---|
| 784 | substr($data, ($y + 1) * $this->m_gih->m_nWidth);
|
---|
| 785 | }
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | $this->m_data = $data;
|
---|
| 789 | }
|
---|
| 790 | }
|
---|
| 791 |
|
---|
| 792 | ///////////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 793 |
|
---|
| 794 | class CGIF
|
---|
| 795 | {
|
---|
| 796 | var $m_gfh;
|
---|
| 797 | var $m_lpData;
|
---|
| 798 | var $m_img;
|
---|
| 799 | var $m_bLoaded;
|
---|
| 800 |
|
---|
| 801 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 802 |
|
---|
| 803 | // CONSTRUCTOR
|
---|
| 804 | function CGIF()
|
---|
| 805 | {
|
---|
| 806 | $this->m_gfh = new CGIFFILEHEADER();
|
---|
| 807 | $this->m_img = new CGIFIMAGE();
|
---|
| 808 | $this->m_lpData = '';
|
---|
| 809 | $this->m_bLoaded = false;
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 813 |
|
---|
| 814 | function loadFile($lpszFileName, $iIndex)
|
---|
| 815 | {
|
---|
| 816 | if ($iIndex < 0) {
|
---|
| 817 | return false;
|
---|
| 818 | }
|
---|
| 819 |
|
---|
| 820 | // READ FILE
|
---|
| 821 | if (!($fh = @fopen($lpszFileName, 'rb'))) {
|
---|
| 822 | return false;
|
---|
| 823 | }
|
---|
| 824 | $this->m_lpData = @fRead($fh, @fileSize($lpszFileName));
|
---|
| 825 | fclose($fh);
|
---|
| 826 |
|
---|
| 827 | // GET FILE HEADER
|
---|
| 828 | if (!$this->m_gfh->load($this->m_lpData, $len = 0)) {
|
---|
| 829 | return false;
|
---|
| 830 | }
|
---|
| 831 | $this->m_lpData = substr($this->m_lpData, $len);
|
---|
| 832 |
|
---|
| 833 | do {
|
---|
| 834 | if (!$this->m_img->load($this->m_lpData, $imgLen = 0)) {
|
---|
| 835 | return false;
|
---|
| 836 | }
|
---|
| 837 | $this->m_lpData = substr($this->m_lpData, $imgLen);
|
---|
| 838 | }
|
---|
| 839 | while ($iIndex-- > 0);
|
---|
| 840 |
|
---|
| 841 | $this->m_bLoaded = true;
|
---|
| 842 | return true;
|
---|
| 843 | }
|
---|
| 844 |
|
---|
| 845 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 846 |
|
---|
| 847 | function getSize($lpszFileName, &$width, &$height)
|
---|
| 848 | {
|
---|
| 849 | if (!($fh = @fopen($lpszFileName, 'rb'))) {
|
---|
| 850 | return false;
|
---|
| 851 | }
|
---|
| 852 | $data = @fRead($fh, @fileSize($lpszFileName));
|
---|
| 853 | @fclose($fh);
|
---|
| 854 |
|
---|
| 855 | $gfh = new CGIFFILEHEADER();
|
---|
| 856 | if (!$gfh->load($data, $len = 0)) {
|
---|
| 857 | return false;
|
---|
| 858 | }
|
---|
| 859 |
|
---|
| 860 | $width = $gfh->m_nWidth;
|
---|
| 861 | $height = $gfh->m_nHeight;
|
---|
| 862 | return true;
|
---|
| 863 | }
|
---|
| 864 |
|
---|
| 865 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 866 |
|
---|
| 867 | function getBmp($bgColor)
|
---|
| 868 | {
|
---|
| 869 | $out = '';
|
---|
| 870 |
|
---|
| 871 | if (!$this->m_bLoaded) {
|
---|
| 872 | return false;
|
---|
| 873 | }
|
---|
| 874 |
|
---|
| 875 | // PREPARE COLOR TABLE (RGBQUADs)
|
---|
| 876 | if ($this->m_img->m_gih->m_bLocalClr) {
|
---|
| 877 | $nColors = $this->m_img->m_gih->m_nTableSize;
|
---|
| 878 | $rgbq = $this->m_img->m_gih->m_colorTable->toRGBQuad();
|
---|
| 879 | if ($bgColor != -1) {
|
---|
| 880 | $bgColor = $this->m_img->m_gih->m_colorTable->colorIndex($bgColor);
|
---|
| 881 | }
|
---|
| 882 | } elseif ($this->m_gfh->m_bGlobalClr) {
|
---|
| 883 | $nColors = $this->m_gfh->m_nTableSize;
|
---|
| 884 | $rgbq = $this->m_gfh->m_colorTable->toRGBQuad();
|
---|
| 885 | if ($bgColor != -1) {
|
---|
| 886 | $bgColor = $this->m_gfh->m_colorTable->colorIndex($bgColor);
|
---|
| 887 | }
|
---|
| 888 | } else {
|
---|
| 889 | $nColors = 0;
|
---|
| 890 | $bgColor = -1;
|
---|
| 891 | }
|
---|
| 892 |
|
---|
| 893 | // PREPARE BITMAP BITS
|
---|
| 894 | $data = $this->m_img->m_data;
|
---|
| 895 | $nPxl = ($this->m_gfh->m_nHeight - 1) * $this->m_gfh->m_nWidth;
|
---|
| 896 | $bmp = '';
|
---|
| 897 | $nPad = ($this->m_gfh->m_nWidth % 4) ? 4 - ($this->m_gfh->m_nWidth % 4) : 0;
|
---|
| 898 | for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
|
---|
| 899 | for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
|
---|
| 900 | if (
|
---|
| 901 | ($x >= $this->m_img->m_gih->m_nLeft) &&
|
---|
| 902 | ($y >= $this->m_img->m_gih->m_nTop) &&
|
---|
| 903 | ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
|
---|
| 904 | ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
|
---|
| 905 | // PART OF IMAGE
|
---|
| 906 | if (@$this->m_img->m_bTrans && (ord($data{$nPxl}) == $this->m_img->m_nTrans)) {
|
---|
| 907 | // TRANSPARENT -> BACKGROUND
|
---|
| 908 | if ($bgColor == -1) {
|
---|
| 909 | $bmp .= chr($this->m_gfh->m_nBgColor);
|
---|
| 910 | } else {
|
---|
| 911 | $bmp .= chr($bgColor);
|
---|
| 912 | }
|
---|
| 913 | } else {
|
---|
| 914 | $bmp .= $data{$nPxl};
|
---|
| 915 | }
|
---|
| 916 | } else {
|
---|
| 917 | // BACKGROUND
|
---|
| 918 | if ($bgColor == -1) {
|
---|
| 919 | $bmp .= chr($this->m_gfh->m_nBgColor);
|
---|
| 920 | } else {
|
---|
| 921 | $bmp .= chr($bgColor);
|
---|
| 922 | }
|
---|
| 923 | }
|
---|
| 924 | }
|
---|
| 925 | $nPxl -= $this->m_gfh->m_nWidth << 1;
|
---|
| 926 |
|
---|
| 927 | // ADD PADDING
|
---|
| 928 | for ($x = 0; $x < $nPad; $x++) {
|
---|
| 929 | $bmp .= "\x00";
|
---|
| 930 | }
|
---|
| 931 | }
|
---|
| 932 |
|
---|
| 933 | // BITMAPFILEHEADER
|
---|
| 934 | $out .= 'BM';
|
---|
| 935 | $out .= $this->dword(14 + 40 + ($nColors << 2) + strlen($bmp));
|
---|
| 936 | $out .= "\x00\x00";
|
---|
| 937 | $out .= "\x00\x00";
|
---|
| 938 | $out .= $this->dword(14 + 40 + ($nColors << 2));
|
---|
| 939 |
|
---|
| 940 | // BITMAPINFOHEADER
|
---|
| 941 | $out .= $this->dword(40);
|
---|
| 942 | $out .= $this->dword($this->m_gfh->m_nWidth);
|
---|
| 943 | $out .= $this->dword($this->m_gfh->m_nHeight);
|
---|
| 944 | $out .= "\x01\x00";
|
---|
| 945 | $out .= "\x08\x00";
|
---|
| 946 | $out .= "\x00\x00\x00\x00";
|
---|
| 947 | $out .= "\x00\x00\x00\x00";
|
---|
| 948 | $out .= "\x12\x0B\x00\x00";
|
---|
| 949 | $out .= "\x12\x0B\x00\x00";
|
---|
| 950 | $out .= $this->dword($nColors % 256);
|
---|
| 951 | $out .= "\x00\x00\x00\x00";
|
---|
| 952 |
|
---|
| 953 | // COLOR TABLE
|
---|
| 954 | if ($nColors > 0) {
|
---|
| 955 | $out .= $rgbq;
|
---|
| 956 | }
|
---|
| 957 |
|
---|
| 958 | // DATA
|
---|
| 959 | $out .= $bmp;
|
---|
| 960 |
|
---|
| 961 | return $out;
|
---|
| 962 | }
|
---|
| 963 |
|
---|
| 964 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 965 |
|
---|
| 966 | function getPng($bgColor)
|
---|
| 967 | {
|
---|
| 968 | $out = '';
|
---|
| 969 |
|
---|
| 970 | if (!$this->m_bLoaded) {
|
---|
| 971 | return false;
|
---|
| 972 | }
|
---|
| 973 |
|
---|
| 974 | // PREPARE COLOR TABLE (RGBQUADs)
|
---|
| 975 | if ($this->m_img->m_gih->m_bLocalClr) {
|
---|
| 976 | $nColors = $this->m_img->m_gih->m_nTableSize;
|
---|
| 977 | $pal = $this->m_img->m_gih->m_colorTable->toString();
|
---|
| 978 | if ($bgColor != -1) {
|
---|
| 979 | $bgColor = $this->m_img->m_gih->m_colorTable->colorIndex($bgColor);
|
---|
| 980 | }
|
---|
| 981 | } elseif ($this->m_gfh->m_bGlobalClr) {
|
---|
| 982 | $nColors = $this->m_gfh->m_nTableSize;
|
---|
| 983 | $pal = $this->m_gfh->m_colorTable->toString();
|
---|
| 984 | if ($bgColor != -1) {
|
---|
| 985 | $bgColor = $this->m_gfh->m_colorTable->colorIndex($bgColor);
|
---|
| 986 | }
|
---|
| 987 | } else {
|
---|
| 988 | $nColors = 0;
|
---|
| 989 | $bgColor = -1;
|
---|
| 990 | }
|
---|
| 991 |
|
---|
| 992 | // PREPARE BITMAP BITS
|
---|
| 993 | $data = $this->m_img->m_data;
|
---|
| 994 | $nPxl = 0;
|
---|
| 995 | $bmp = '';
|
---|
| 996 | for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
|
---|
| 997 | $bmp .= "\x00";
|
---|
| 998 | for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
|
---|
| 999 | if (
|
---|
| 1000 | ($x >= $this->m_img->m_gih->m_nLeft) &&
|
---|
| 1001 | ($y >= $this->m_img->m_gih->m_nTop) &&
|
---|
| 1002 | ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
|
---|
| 1003 | ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
|
---|
| 1004 | // PART OF IMAGE
|
---|
| 1005 | $bmp .= $data{$nPxl};
|
---|
| 1006 | } else {
|
---|
| 1007 | // BACKGROUND
|
---|
| 1008 | if ($bgColor == -1) {
|
---|
| 1009 | $bmp .= chr($this->m_gfh->m_nBgColor);
|
---|
| 1010 | } else {
|
---|
| 1011 | $bmp .= chr($bgColor);
|
---|
| 1012 | }
|
---|
| 1013 | }
|
---|
| 1014 | }
|
---|
| 1015 | }
|
---|
| 1016 | $bmp = gzcompress($bmp, 9);
|
---|
| 1017 |
|
---|
| 1018 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1019 | // SIGNATURE
|
---|
| 1020 | $out .= "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A";
|
---|
| 1021 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1022 | // HEADER
|
---|
| 1023 | $out .= "\x00\x00\x00\x0D";
|
---|
| 1024 | $tmp = 'IHDR';
|
---|
| 1025 | $tmp .= $this->ndword($this->m_gfh->m_nWidth);
|
---|
| 1026 | $tmp .= $this->ndword($this->m_gfh->m_nHeight);
|
---|
| 1027 | $tmp .= "\x08\x03\x00\x00\x00";
|
---|
| 1028 | $out .= $tmp;
|
---|
| 1029 | $out .= $this->ndword(crc32($tmp));
|
---|
| 1030 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1031 | // PALETTE
|
---|
| 1032 | if ($nColors > 0) {
|
---|
| 1033 | $out .= $this->ndword($nColors * 3);
|
---|
| 1034 | $tmp = 'PLTE';
|
---|
| 1035 | $tmp .= $pal;
|
---|
| 1036 | $out .= $tmp;
|
---|
| 1037 | $out .= $this->ndword(crc32($tmp));
|
---|
| 1038 | }
|
---|
| 1039 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1040 | // TRANSPARENCY
|
---|
| 1041 | if (@$this->m_img->m_bTrans && ($nColors > 0)) {
|
---|
| 1042 | $out .= $this->ndword($nColors);
|
---|
| 1043 | $tmp = 'tRNS';
|
---|
| 1044 | for ($i = 0; $i < $nColors; $i++) {
|
---|
| 1045 | $tmp .= ($i == $this->m_img->m_nTrans) ? "\x00" : "\xFF";
|
---|
| 1046 | }
|
---|
| 1047 | $out .= $tmp;
|
---|
| 1048 | $out .= $this->ndword(crc32($tmp));
|
---|
| 1049 | }
|
---|
| 1050 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1051 | // DATA BITS
|
---|
| 1052 | $out .= $this->ndword(strlen($bmp));
|
---|
| 1053 | $tmp = 'IDAT';
|
---|
| 1054 | $tmp .= $bmp;
|
---|
| 1055 | $out .= $tmp;
|
---|
| 1056 | $out .= $this->ndword(crc32($tmp));
|
---|
| 1057 | ///////////////////////////////////////////////////////////////////////
|
---|
| 1058 | // END OF FILE
|
---|
| 1059 | $out .= "\x00\x00\x00\x00IEND\xAE\x42\x60\x82";
|
---|
| 1060 |
|
---|
| 1061 | return $out;
|
---|
| 1062 | }
|
---|
| 1063 |
|
---|
| 1064 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1065 |
|
---|
| 1066 | // Added by James Heinrich <info@silisoftware.com> - January 5, 2003
|
---|
| 1067 |
|
---|
| 1068 | // Takes raw image data and plots it pixel-by-pixel on a new GD image and returns that
|
---|
| 1069 | // It's extremely slow, but the only solution when ImageCreateFromString() fails
|
---|
| 1070 | function getGD_PixelPlotterVersion()
|
---|
| 1071 | {
|
---|
| 1072 | if (!$this->m_bLoaded) {
|
---|
| 1073 | return false;
|
---|
| 1074 | }
|
---|
| 1075 |
|
---|
| 1076 | // PREPARE COLOR TABLE (RGBQUADs)
|
---|
| 1077 | if ($this->m_img->m_gih->m_bLocalClr) {
|
---|
| 1078 | $pal = $this->m_img->m_gih->m_colorTable->toString();
|
---|
| 1079 | } elseif ($this->m_gfh->m_bGlobalClr) {
|
---|
| 1080 | $pal = $this->m_gfh->m_colorTable->toString();
|
---|
| 1081 | } else {
|
---|
| 1082 | die('No color table available in getGD_PixelPlotterVersion()');
|
---|
| 1083 | }
|
---|
| 1084 |
|
---|
| 1085 | $PlottingIMG = ImageCreate($this->m_gfh->m_nWidth, $this->m_gfh->m_nHeight);
|
---|
| 1086 | $NumColorsInPal = floor(strlen($pal) / 3);
|
---|
| 1087 | for ($i = 0; $i < $NumColorsInPal; $i++) {
|
---|
| 1088 | $ThisImageColor[$i] = ImageColorAllocate(
|
---|
| 1089 | $PlottingIMG,
|
---|
| 1090 | ord($pal{(($i * 3) + 0)}),
|
---|
| 1091 | ord($pal{(($i * 3) + 1)}),
|
---|
| 1092 | ord($pal{(($i * 3) + 2)}));
|
---|
| 1093 | }
|
---|
| 1094 |
|
---|
| 1095 | // PREPARE BITMAP BITS
|
---|
| 1096 | $data = $this->m_img->m_data;
|
---|
| 1097 | $nPxl = ($this->m_gfh->m_nHeight - 1) * $this->m_gfh->m_nWidth;
|
---|
| 1098 | for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
|
---|
| 1099 | if (!phpthumb_functions::FunctionIsDisabled('set_time_limit')) {
|
---|
| 1100 | set_time_limit(30);
|
---|
| 1101 | }
|
---|
| 1102 | for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
|
---|
| 1103 | if (
|
---|
| 1104 | ($x >= $this->m_img->m_gih->m_nLeft) &&
|
---|
| 1105 | ($y >= $this->m_img->m_gih->m_nTop) &&
|
---|
| 1106 | ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
|
---|
| 1107 | ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
|
---|
| 1108 | // PART OF IMAGE
|
---|
| 1109 | if (@$this->m_img->m_bTrans && (ord($data{$nPxl}) == $this->m_img->m_nTrans)) {
|
---|
| 1110 | ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[$this->m_gfh->m_nBgColor]);
|
---|
| 1111 | } else {
|
---|
| 1112 | ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[ord($data{$nPxl})]);
|
---|
| 1113 | }
|
---|
| 1114 | } else {
|
---|
| 1115 | // BACKGROUND
|
---|
| 1116 | ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[$this->m_gfh->m_nBgColor]);
|
---|
| 1117 | }
|
---|
| 1118 | }
|
---|
| 1119 | $nPxl -= $this->m_gfh->m_nWidth << 1;
|
---|
| 1120 |
|
---|
| 1121 | }
|
---|
| 1122 |
|
---|
| 1123 | return $PlottingIMG;
|
---|
| 1124 | }
|
---|
| 1125 |
|
---|
| 1126 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1127 |
|
---|
| 1128 | function dword($val)
|
---|
| 1129 | {
|
---|
| 1130 | $val = intval($val);
|
---|
| 1131 | return chr($val & 0xFF).chr(($val & 0xFF00) >> 8).chr(($val & 0xFF0000) >> 16).chr(($val & 0xFF000000) >> 24);
|
---|
| 1132 | }
|
---|
| 1133 |
|
---|
| 1134 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1135 |
|
---|
| 1136 | function ndword($val)
|
---|
| 1137 | {
|
---|
| 1138 | $val = intval($val);
|
---|
| 1139 | return chr(($val & 0xFF000000) >> 24).chr(($val & 0xFF0000) >> 16).chr(($val & 0xFF00) >> 8).chr($val & 0xFF);
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
| 1142 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1143 |
|
---|
| 1144 | function width()
|
---|
| 1145 | {
|
---|
| 1146 | return $this->m_gfh->m_nWidth;
|
---|
| 1147 | }
|
---|
| 1148 |
|
---|
| 1149 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1150 |
|
---|
| 1151 | function height()
|
---|
| 1152 | {
|
---|
| 1153 | return $this->m_gfh->m_nHeight;
|
---|
| 1154 | }
|
---|
| 1155 |
|
---|
| 1156 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1157 |
|
---|
| 1158 | function comment()
|
---|
| 1159 | {
|
---|
| 1160 | return $this->m_img->m_lpComm;
|
---|
| 1161 | }
|
---|
| 1162 |
|
---|
| 1163 | ///////////////////////////////////////////////////////////////////////////
|
---|
| 1164 |
|
---|
| 1165 | function loaded()
|
---|
| 1166 | {
|
---|
| 1167 | return $this->m_bLoaded;
|
---|
| 1168 | }
|
---|
| 1169 | }
|
---|
| 1170 |
|
---|
| 1171 | ///////////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 1172 |
|
---|
| 1173 | ?> |
---|