+++ /dev/null
-<?php
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// GIF Util - (C) 2003 Yamasoft (S/C)
-// http://www.yamasoft.com
-// All Rights Reserved
-// This file can be freely copied, distributed, modified, updated by anyone under the only
-// condition to leave the original address (Yamasoft, http://www.yamasoft.com) and this header.
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// <gif> = gif_loadFile(filename, [index])
-// <bool> = gif_getSize(<gif> or filename, &width, &height)
-// <bool> = gif_outputAsPng(<gif>, filename, [bgColor])
-// <bool> = gif_outputAsBmp(<gif>, filename, [bgcolor])
-// <bool> = gif_outputAsJpeg(<gif>, filename, [bgcolor]) - use cjpeg if available otherwise uses GD
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// Original code by Fabien Ezber
-// Modified by James Heinrich <info@silisoftware.com> for use in phpThumb() - December 10, 2003
-// * Added function gif_loadFileToGDimageResource() - this returns a GD image resource
-// * Modified gif_outputAsJpeg() to check if it's running under Windows, or if cjpeg is not
-// available, in which case it will attempt to output JPEG using GD functions
-// * added @ error-suppression to two lines where it checks: if ($this->m_img->m_bTrans)
-// otherwise warnings are generated if error_reporting == E_ALL
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-function gif_loadFile($lpszFileName, $iIndex = 0)
-{
- $gif = new CGIF();
- if ($gif->loadFile($lpszFileName, $iIndex)) {
- return $gif;
- }
- return false;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-// Added by James Heinrich <info@silisoftware.com> - December 10, 2003
-function gif_loadFileToGDimageResource($gifFilename, $bgColor = -1)
-{
- if ($gif = gif_loadFile($gifFilename)) {
-
- @set_time_limit(300);
- // general strategy: convert raw data to PNG then convert PNG data to GD image resource
- $PNGdata = $gif->getPng($bgColor);
- if ($img = @ImageCreateFromString($PNGdata)) {
-
- // excellent - PNG image data successfully converted to GD image
- return $img;
-
- } elseif ($img = $gif->getGD_PixelPlotterVersion()) {
-
- // problem: ImageCreateFromString() didn't like the PNG image data.
- // This has been known to happen in PHP v4.0.6
- // solution: take the raw image data and create a new GD image and plot
- // pixel-by-pixel on the GD image. This is extremely slow, but it does
- // work and a slow solution is better than no solution, right? :)
- return $img;
-
- }
- }
- return false;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-function gif_outputAsBmp($gif, $lpszFileName, $bgColor = -1)
-{
- if (!isSet($gif) || (@get_class($gif) <> 'cgif') || !$gif->loaded() || ($lpszFileName == '')) {
- return false;
- }
-
- $fd = $gif->getBmp($bgColor);
- if (strlen($fd) <= 0) {
- return false;
- }
-
- if (!($fh = @fopen($lpszFileName, 'wb'))) {
- return false;
- }
- @fwrite($fh, $fd, strlen($fd));
- @fflush($fh);
- @fclose($fh);
- return true;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-function gif_outputAsPng($gif, $lpszFileName, $bgColor = -1)
-{
- if (!isSet($gif) || (@get_class($gif) <> 'cgif') || !$gif->loaded() || ($lpszFileName == '')) {
- return false;
- }
-
- $fd = $gif->getPng($bgColor);
- if (strlen($fd) <= 0) {
- return false;
- }
-
- if (!($fh = @fopen($lpszFileName, 'wb'))) {
- return false;
- }
- @fwrite($fh, $fd, strlen($fd));
- @fflush($fh);
- @fclose($fh);
- return true;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-function gif_outputAsJpeg($gif, $lpszFileName, $bgColor = -1)
-{
- // JPEG output that does not require cjpeg added by James Heinrich <info@silisoftware.com> - December 10, 2003
- if ((strtoupper(substr(PHP_OS, 0, 3)) != 'WIN') && (file_exists('/usr/local/bin/cjpeg') || `which cjpeg`)) {
-
- if (gif_outputAsBmp($gif, $lpszFileName.'.bmp', $bgColor)) {
- exec('cjpeg '.$lpszFileName.'.bmp >'.$lpszFileName.' 2>/dev/null');
- @unLink($lpszFileName.'.bmp');
-
- if (@file_exists($lpszFileName)) {
- if (@fileSize($lpszFileName) > 0) {
- return true;
- }
-
- @unLink($lpszFileName);
- }
- }
-
- } else {
-
- // either Windows, or cjpeg not found in path
- if ($img = @ImageCreateFromString($gif->getPng($bgColor))) {
- if (@ImageJPEG($img, $lpszFileName)) {
- return true;
- }
- }
-
- }
-
- return false;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-function gif_getSize($gif, &$width, &$height)
-{
- if (isSet($gif) && (@get_class($gif) == 'cgif') && $gif->loaded()) {
- $width = $gif->width();
- $height = $gif->height();
- } elseif (@file_exists($gif)) {
- $myGIF = new CGIF();
- if (!$myGIF->getSize($gif, $width, $height)) {
- return false;
- }
- } else {
- return false;
- }
-
- return true;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIFLZW
-{
- var $MAX_LZW_BITS;
- var $Fresh, $CodeSize, $SetCodeSize, $MaxCode, $MaxCodeSize, $FirstCode, $OldCode;
- var $ClearCode, $EndCode, $Next, $Vals, $Stack, $sp, $Buf, $CurBit, $LastBit, $Done, $LastByte;
-
- ///////////////////////////////////////////////////////////////////////////
-
- // CONSTRUCTOR
- function CGIFLZW()
- {
- $this->MAX_LZW_BITS = 12;
- unSet($this->Next);
- unSet($this->Vals);
- unSet($this->Stack);
- unSet($this->Buf);
-
- $this->Next = range(0, (1 << $this->MAX_LZW_BITS) - 1);
- $this->Vals = range(0, (1 << $this->MAX_LZW_BITS) - 1);
- $this->Stack = range(0, (1 << ($this->MAX_LZW_BITS + 1)) - 1);
- $this->Buf = range(0, 279);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function deCompress($data, &$datLen)
- {
- $stLen = strlen($data);
- $datLen = 0;
- $ret = '';
-
- // INITIALIZATION
- $this->LZWCommand($data, true);
-
- while (($iIndex = $this->LZWCommand($data, false)) >= 0) {
- $ret .= chr($iIndex);
- }
-
- $datLen = $stLen - strlen($data);
-
- if ($iIndex != -2) {
- return false;
- }
-
- return $ret;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function LZWCommand(&$data, $bInit)
- {
- if ($bInit) {
- $this->SetCodeSize = ord($data{0});
- $data = substr($data, 1);
-
- $this->CodeSize = $this->SetCodeSize + 1;
- $this->ClearCode = 1 << $this->SetCodeSize;
- $this->EndCode = $this->ClearCode + 1;
- $this->MaxCode = $this->ClearCode + 2;
- $this->MaxCodeSize = $this->ClearCode << 1;
-
- $this->GetCode($data, $bInit);
-
- $this->Fresh = 1;
- for ($i = 0; $i < $this->ClearCode; $i++) {
- $this->Next[$i] = 0;
- $this->Vals[$i] = $i;
- }
-
- for (; $i < (1 << $this->MAX_LZW_BITS); $i++) {
- $this->Next[$i] = 0;
- $this->Vals[$i] = 0;
- }
-
- $this->sp = 0;
- return 1;
- }
-
- if ($this->Fresh) {
- $this->Fresh = 0;
- do {
- $this->FirstCode = $this->GetCode($data, $bInit);
- $this->OldCode = $this->FirstCode;
- }
- while ($this->FirstCode == $this->ClearCode);
-
- return $this->FirstCode;
- }
-
- if ($this->sp > 0) {
- $this->sp--;
- return $this->Stack[$this->sp];
- }
-
- while (($Code = $this->GetCode($data, $bInit)) >= 0) {
- if ($Code == $this->ClearCode) {
- for ($i = 0; $i < $this->ClearCode; $i++) {
- $this->Next[$i] = 0;
- $this->Vals[$i] = $i;
- }
-
- for (; $i < (1 << $this->MAX_LZW_BITS); $i++) {
- $this->Next[$i] = 0;
- $this->Vals[$i] = 0;
- }
-
- $this->CodeSize = $this->SetCodeSize + 1;
- $this->MaxCodeSize = $this->ClearCode << 1;
- $this->MaxCode = $this->ClearCode + 2;
- $this->sp = 0;
- $this->FirstCode = $this->GetCode($data, $bInit);
- $this->OldCode = $this->FirstCode;
-
- return $this->FirstCode;
- }
-
- if ($Code == $this->EndCode) {
- return -2;
- }
-
- $InCode = $Code;
- if ($Code >= $this->MaxCode) {
- $this->Stack[$this->sp] = $this->FirstCode;
- $this->sp++;
- $Code = $this->OldCode;
- }
-
- while ($Code >= $this->ClearCode) {
- $this->Stack[$this->sp] = $this->Vals[$Code];
- $this->sp++;
-
- if ($Code == $this->Next[$Code]) // Circular table entry, big GIF Error!
- return -1;
-
- $Code = $this->Next[$Code];
- }
-
- $this->FirstCode = $this->Vals[$Code];
- $this->Stack[$this->sp] = $this->FirstCode;
- $this->sp++;
-
- if (($Code = $this->MaxCode) < (1 << $this->MAX_LZW_BITS)) {
- $this->Next[$Code] = $this->OldCode;
- $this->Vals[$Code] = $this->FirstCode;
- $this->MaxCode++;
-
- if (($this->MaxCode >= $this->MaxCodeSize) && ($this->MaxCodeSize < (1 << $this->MAX_LZW_BITS))) {
- $this->MaxCodeSize *= 2;
- $this->CodeSize++;
- }
- }
-
- $this->OldCode = $InCode;
- if ($this->sp > 0) {
- $this->sp--;
- return $this->Stack[$this->sp];
- }
- }
-
- return $Code;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function GetCode(&$data, $bInit)
- {
- if ($bInit) {
- $this->CurBit = 0;
- $this->LastBit = 0;
- $this->Done = 0;
- $this->LastByte = 2;
- return 1;
- }
-
- if (($this->CurBit + $this->CodeSize) >= $this->LastBit) {
- if ($this->Done) {
- if ($this->CurBit >= $this->LastBit) {
- // Ran off the end of my bits
- return 0;
- }
- return -1;
- }
-
- $this->Buf[0] = $this->Buf[$this->LastByte - 2];
- $this->Buf[1] = $this->Buf[$this->LastByte - 1];
-
- $Count = ord($data{0});
- $data = substr($data, 1);
-
- if ($Count) {
- for ($i = 0; $i < $Count; $i++) {
- $this->Buf[2 + $i] = ord($data{$i});
- }
- $data = substr($data, $Count);
- } else {
- $this->Done = 1;
- }
-
- $this->LastByte = 2 + $Count;
- $this->CurBit = ($this->CurBit - $this->LastBit) + 16;
- $this->LastBit = (2 + $Count) << 3;
- }
-
- $iRet = 0;
- for ($i = $this->CurBit, $j = 0; $j < $this->CodeSize; $i++, $j++) {
- $iRet |= (($this->Buf[intval($i / 8)] & (1 << ($i % 8))) != 0) << $j;
- }
-
- $this->CurBit += $this->CodeSize;
- return $iRet;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIFCOLORTABLE
-{
- var $m_nColors;
- var $m_arColors;
-
- ///////////////////////////////////////////////////////////////////////////
-
- // CONSTRUCTOR
- function CGIFCOLORTABLE()
- {
- unSet($this->m_nColors);
- unSet($this->m_arColors);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function load($lpData, $num)
- {
- $this->m_nColors = 0;
- $this->m_arColors = array();
-
- for ($i = 0; $i < $num; $i++) {
- $rgb = substr($lpData, $i * 3, 3);
- if (strlen($rgb) < 3) {
- return false;
- }
-
- $this->m_arColors[] = (ord($rgb{2}) << 16) + (ord($rgb{1}) << 8) + ord($rgb{0});
- $this->m_nColors++;
- }
-
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function toString()
- {
- $ret = '';
-
- for ($i = 0; $i < $this->m_nColors; $i++) {
- $ret .=
- chr(($this->m_arColors[$i] & 0x000000FF)) . // R
- chr(($this->m_arColors[$i] & 0x0000FF00) >> 8) . // G
- chr(($this->m_arColors[$i] & 0x00FF0000) >> 16); // B
- }
-
- return $ret;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function toRGBQuad()
- {
- $ret = '';
-
- for ($i = 0; $i < $this->m_nColors; $i++) {
- $ret .=
- chr(($this->m_arColors[$i] & 0x00FF0000) >> 16) . // B
- chr(($this->m_arColors[$i] & 0x0000FF00) >> 8) . // G
- chr(($this->m_arColors[$i] & 0x000000FF)) . // R
- "\x00";
- }
-
- return $ret;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function colorIndex($rgb)
- {
- $rgb = intval($rgb) & 0xFFFFFF;
- $r1 = ($rgb & 0x0000FF);
- $g1 = ($rgb & 0x00FF00) >> 8;
- $b1 = ($rgb & 0xFF0000) >> 16;
- $idx = -1;
-
- for ($i = 0; $i < $this->m_nColors; $i++) {
- $r2 = ($this->m_arColors[$i] & 0x000000FF);
- $g2 = ($this->m_arColors[$i] & 0x0000FF00) >> 8;
- $b2 = ($this->m_arColors[$i] & 0x00FF0000) >> 16;
- $d = abs($r2 - $r1) + abs($g2 - $g1) + abs($b2 - $b1);
-
- if (($idx == -1) || ($d < $dif)) {
- $idx = $i;
- $dif = $d;
- }
- }
-
- return $idx;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIFFILEHEADER
-{
- var $m_lpVer;
- var $m_nWidth;
- var $m_nHeight;
- var $m_bGlobalClr;
- var $m_nColorRes;
- var $m_bSorted;
- var $m_nTableSize;
- var $m_nBgColor;
- var $m_nPixelRatio;
- var $m_colorTable;
-
- ///////////////////////////////////////////////////////////////////////////
-
- // CONSTRUCTOR
- function CGIFFILEHEADER()
- {
- unSet($this->m_lpVer);
- unSet($this->m_nWidth);
- unSet($this->m_nHeight);
- unSet($this->m_bGlobalClr);
- unSet($this->m_nColorRes);
- unSet($this->m_bSorted);
- unSet($this->m_nTableSize);
- unSet($this->m_nBgColor);
- unSet($this->m_nPixelRatio);
- unSet($this->m_colorTable);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function load($lpData, &$hdrLen)
- {
- $hdrLen = 0;
-
- $this->m_lpVer = substr($lpData, 0, 6);
- if (($this->m_lpVer <> 'GIF87a') && ($this->m_lpVer <> 'GIF89a')) {
- return false;
- }
-
- $this->m_nWidth = $this->w2i(substr($lpData, 6, 2));
- $this->m_nHeight = $this->w2i(substr($lpData, 8, 2));
- if (!$this->m_nWidth || !$this->m_nHeight) {
- return false;
- }
-
- $b = ord(substr($lpData, 10, 1));
- $this->m_bGlobalClr = ($b & 0x80) ? true : false;
- $this->m_nColorRes = ($b & 0x70) >> 4;
- $this->m_bSorted = ($b & 0x08) ? true : false;
- $this->m_nTableSize = 2 << ($b & 0x07);
- $this->m_nBgColor = ord(substr($lpData, 11, 1));
- $this->m_nPixelRatio = ord(substr($lpData, 12, 1));
- $hdrLen = 13;
-
- if ($this->m_bGlobalClr) {
- $this->m_colorTable = new CGIFCOLORTABLE();
- if (!$this->m_colorTable->load(substr($lpData, $hdrLen), $this->m_nTableSize)) {
- return false;
- }
- $hdrLen += 3 * $this->m_nTableSize;
- }
-
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function w2i($str)
- {
- return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIFIMAGEHEADER
-{
- var $m_nLeft;
- var $m_nTop;
- var $m_nWidth;
- var $m_nHeight;
- var $m_bLocalClr;
- var $m_bInterlace;
- var $m_bSorted;
- var $m_nTableSize;
- var $m_colorTable;
-
- ///////////////////////////////////////////////////////////////////////////
-
- // CONSTRUCTOR
- function CGIFIMAGEHEADER()
- {
- unSet($this->m_nLeft);
- unSet($this->m_nTop);
- unSet($this->m_nWidth);
- unSet($this->m_nHeight);
- unSet($this->m_bLocalClr);
- unSet($this->m_bInterlace);
- unSet($this->m_bSorted);
- unSet($this->m_nTableSize);
- unSet($this->m_colorTable);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function load($lpData, &$hdrLen)
- {
- $hdrLen = 0;
-
- $this->m_nLeft = $this->w2i(substr($lpData, 0, 2));
- $this->m_nTop = $this->w2i(substr($lpData, 2, 2));
- $this->m_nWidth = $this->w2i(substr($lpData, 4, 2));
- $this->m_nHeight = $this->w2i(substr($lpData, 6, 2));
-
- if (!$this->m_nWidth || !$this->m_nHeight) {
- return false;
- }
-
- $b = ord($lpData{8});
- $this->m_bLocalClr = ($b & 0x80) ? true : false;
- $this->m_bInterlace = ($b & 0x40) ? true : false;
- $this->m_bSorted = ($b & 0x20) ? true : false;
- $this->m_nTableSize = 2 << ($b & 0x07);
- $hdrLen = 9;
-
- if ($this->m_bLocalClr) {
- $this->m_colorTable = new CGIFCOLORTABLE();
- if (!$this->m_colorTable->load(substr($lpData, $hdrLen), $this->m_nTableSize)) {
- return false;
- }
- $hdrLen += 3 * $this->m_nTableSize;
- }
-
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function w2i($str)
- {
- return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIFIMAGE
-{
- var $m_disp;
- var $m_bUser;
- var $m_bTrans;
- var $m_nDelay;
- var $m_nTrans;
- var $m_lpComm;
- var $m_gih;
- var $m_data;
- var $m_lzw;
-
- ///////////////////////////////////////////////////////////////////////////
-
- function CGIFIMAGE()
- {
- unSet($this->m_disp);
- unSet($this->m_bUser);
- unSet($this->m_bTrans);
- unSet($this->m_nDelay);
- unSet($this->m_nTrans);
- unSet($this->m_lpComm);
- unSet($this->m_data);
- $this->m_gih = new CGIFIMAGEHEADER();
- $this->m_lzw = new CGIFLZW();
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function load($data, &$datLen)
- {
- $datLen = 0;
-
- while (true) {
- $b = ord($data{0});
- $data = substr($data, 1);
- $datLen++;
-
- switch($b) {
- case 0x21: // Extension
- if (!$this->skipExt($data, $len = 0)) {
- return false;
- }
- $datLen += $len;
- break;
-
- case 0x2C: // Image
- // LOAD HEADER & COLOR TABLE
- if (!$this->m_gih->load($data, $len = 0)) {
- return false;
- }
- $data = substr($data, $len);
- $datLen += $len;
-
- // ALLOC BUFFER
- if (!($this->m_data = $this->m_lzw->deCompress($data, $len = 0))) {
- return false;
- }
- $data = substr($data, $len);
- $datLen += $len;
-
- if ($this->m_gih->m_bInterlace) {
- $this->deInterlace();
- }
- return true;
-
- case 0x3B: // EOF
- default:
- return false;
- }
- }
- return false;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function skipExt(&$data, &$extLen)
- {
- $extLen = 0;
-
- $b = ord($data{0});
- $data = substr($data, 1);
- $extLen++;
-
- switch($b) {
- case 0xF9: // Graphic Control
- $b = ord($data{1});
- $this->m_disp = ($b & 0x1C) >> 2;
- $this->m_bUser = ($b & 0x02) ? true : false;
- $this->m_bTrans = ($b & 0x01) ? true : false;
- $this->m_nDelay = $this->w2i(substr($data, 2, 2));
- $this->m_nTrans = ord($data{4});
- break;
-
- case 0xFE: // Comment
- $this->m_lpComm = substr($data, 1, ord($data{0}));
- break;
-
- case 0x01: // Plain text
- break;
-
- case 0xFF: // Application
- break;
- }
-
- // SKIP DEFAULT AS DEFS MAY CHANGE
- $b = ord($data{0});
- $data = substr($data, 1);
- $extLen++;
- while ($b > 0) {
- $data = substr($data, $b);
- $extLen += $b;
- $b = ord($data{0});
- $data = substr($data, 1);
- $extLen++;
- }
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function w2i($str)
- {
- return ord(substr($str, 0, 1)) + (ord(substr($str, 1, 1)) << 8);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function deInterlace()
- {
- $data = $this->m_data;
-
- for ($i = 0; $i < 4; $i++) {
- switch($i) {
- case 0:
- $s = 8;
- $y = 0;
- break;
-
- case 1:
- $s = 8;
- $y = 4;
- break;
-
- case 2:
- $s = 4;
- $y = 2;
- break;
-
- case 3:
- $s = 2;
- $y = 1;
- break;
- }
-
- for (; $y < $this->m_gih->m_nHeight; $y += $s) {
- $lne = substr($this->m_data, 0, $this->m_gih->m_nWidth);
- $this->m_data = substr($this->m_data, $this->m_gih->m_nWidth);
-
- $data =
- substr($data, 0, $y * $this->m_gih->m_nWidth) .
- $lne .
- substr($data, ($y + 1) * $this->m_gih->m_nWidth);
- }
- }
-
- $this->m_data = $data;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-class CGIF
-{
- var $m_gfh;
- var $m_lpData;
- var $m_img;
- var $m_bLoaded;
-
- ///////////////////////////////////////////////////////////////////////////
-
- // CONSTRUCTOR
- function CGIF()
- {
- $this->m_gfh = new CGIFFILEHEADER();
- $this->m_img = new CGIFIMAGE();
- $this->m_lpData = '';
- $this->m_bLoaded = false;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function loadFile($lpszFileName, $iIndex)
- {
- if ($iIndex < 0) {
- return false;
- }
-
- // READ FILE
- if (!($fh = @fopen($lpszFileName, 'rb'))) {
- return false;
- }
- $this->m_lpData = @fRead($fh, @fileSize($lpszFileName));
- fclose($fh);
-
- // GET FILE HEADER
- if (!$this->m_gfh->load($this->m_lpData, $len = 0)) {
- return false;
- }
- $this->m_lpData = substr($this->m_lpData, $len);
-
- do {
- if (!$this->m_img->load($this->m_lpData, $imgLen = 0)) {
- return false;
- }
- $this->m_lpData = substr($this->m_lpData, $imgLen);
- }
- while ($iIndex-- > 0);
-
- $this->m_bLoaded = true;
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function getSize($lpszFileName, &$width, &$height)
- {
- if (!($fh = @fopen($lpszFileName, 'rb'))) {
- return false;
- }
- $data = @fRead($fh, @fileSize($lpszFileName));
- @fclose($fh);
-
- $gfh = new CGIFFILEHEADER();
- if (!$gfh->load($data, $len = 0)) {
- return false;
- }
-
- $width = $gfh->m_nWidth;
- $height = $gfh->m_nHeight;
- return true;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function getBmp($bgColor)
- {
- $out = '';
-
- if (!$this->m_bLoaded) {
- return false;
- }
-
- // PREPARE COLOR TABLE (RGBQUADs)
- if ($this->m_img->m_gih->m_bLocalClr) {
- $nColors = $this->m_img->m_gih->m_nTableSize;
- $rgbq = $this->m_img->m_gih->m_colorTable->toRGBQuad();
- if ($bgColor != -1) {
- $bgColor = $this->m_img->m_gih->m_colorTable->colorIndex($bgColor);
- }
- } elseif ($this->m_gfh->m_bGlobalClr) {
- $nColors = $this->m_gfh->m_nTableSize;
- $rgbq = $this->m_gfh->m_colorTable->toRGBQuad();
- if ($bgColor != -1) {
- $bgColor = $this->m_gfh->m_colorTable->colorIndex($bgColor);
- }
- } else {
- $nColors = 0;
- $bgColor = -1;
- }
-
- // PREPARE BITMAP BITS
- $data = $this->m_img->m_data;
- $nPxl = ($this->m_gfh->m_nHeight - 1) * $this->m_gfh->m_nWidth;
- $bmp = '';
- $nPad = ($this->m_gfh->m_nWidth % 4) ? 4 - ($this->m_gfh->m_nWidth % 4) : 0;
- for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
- for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
- if (
- ($x >= $this->m_img->m_gih->m_nLeft) &&
- ($y >= $this->m_img->m_gih->m_nTop) &&
- ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
- ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
- // PART OF IMAGE
- if (@$this->m_img->m_bTrans && (ord($data{$nPxl}) == $this->m_img->m_nTrans)) {
- // TRANSPARENT -> BACKGROUND
- if ($bgColor == -1) {
- $bmp .= chr($this->m_gfh->m_nBgColor);
- } else {
- $bmp .= chr($bgColor);
- }
- } else {
- $bmp .= $data{$nPxl};
- }
- } else {
- // BACKGROUND
- if ($bgColor == -1) {
- $bmp .= chr($this->m_gfh->m_nBgColor);
- } else {
- $bmp .= chr($bgColor);
- }
- }
- }
- $nPxl -= $this->m_gfh->m_nWidth << 1;
-
- // ADD PADDING
- for ($x = 0; $x < $nPad; $x++) {
- $bmp .= "\x00";
- }
- }
-
- // BITMAPFILEHEADER
- $out .= 'BM';
- $out .= $this->dword(14 + 40 + ($nColors << 2) + strlen($bmp));
- $out .= "\x00\x00";
- $out .= "\x00\x00";
- $out .= $this->dword(14 + 40 + ($nColors << 2));
-
- // BITMAPINFOHEADER
- $out .= $this->dword(40);
- $out .= $this->dword($this->m_gfh->m_nWidth);
- $out .= $this->dword($this->m_gfh->m_nHeight);
- $out .= "\x01\x00";
- $out .= "\x08\x00";
- $out .= "\x00\x00\x00\x00";
- $out .= "\x00\x00\x00\x00";
- $out .= "\x12\x0B\x00\x00";
- $out .= "\x12\x0B\x00\x00";
- $out .= $this->dword($nColors % 256);
- $out .= "\x00\x00\x00\x00";
-
- // COLOR TABLE
- if ($nColors > 0) {
- $out .= $rgbq;
- }
-
- // DATA
- $out .= $bmp;
-
- return $out;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function getPng($bgColor)
- {
- $out = '';
-
- if (!$this->m_bLoaded) {
- return false;
- }
-
- // PREPARE COLOR TABLE (RGBQUADs)
- if ($this->m_img->m_gih->m_bLocalClr) {
- $nColors = $this->m_img->m_gih->m_nTableSize;
- $pal = $this->m_img->m_gih->m_colorTable->toString();
- if ($bgColor != -1) {
- $bgColor = $this->m_img->m_gih->m_colorTable->colorIndex($bgColor);
- }
- } elseif ($this->m_gfh->m_bGlobalClr) {
- $nColors = $this->m_gfh->m_nTableSize;
- $pal = $this->m_gfh->m_colorTable->toString();
- if ($bgColor != -1) {
- $bgColor = $this->m_gfh->m_colorTable->colorIndex($bgColor);
- }
- } else {
- $nColors = 0;
- $bgColor = -1;
- }
-
- // PREPARE BITMAP BITS
- $data = $this->m_img->m_data;
- $nPxl = 0;
- $bmp = '';
- for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
- $bmp .= "\x00";
- for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
- if (
- ($x >= $this->m_img->m_gih->m_nLeft) &&
- ($y >= $this->m_img->m_gih->m_nTop) &&
- ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
- ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
- // PART OF IMAGE
- $bmp .= $data{$nPxl};
- } else {
- // BACKGROUND
- if ($bgColor == -1) {
- $bmp .= chr($this->m_gfh->m_nBgColor);
- } else {
- $bmp .= chr($bgColor);
- }
- }
- }
- }
- $bmp = gzcompress($bmp, 9);
-
- ///////////////////////////////////////////////////////////////////////
- // SIGNATURE
- $out .= "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A";
- ///////////////////////////////////////////////////////////////////////
- // HEADER
- $out .= "\x00\x00\x00\x0D";
- $tmp = 'IHDR';
- $tmp .= $this->ndword($this->m_gfh->m_nWidth);
- $tmp .= $this->ndword($this->m_gfh->m_nHeight);
- $tmp .= "\x08\x03\x00\x00\x00";
- $out .= $tmp;
- $out .= $this->ndword(crc32($tmp));
- ///////////////////////////////////////////////////////////////////////
- // PALETTE
- if ($nColors > 0) {
- $out .= $this->ndword($nColors * 3);
- $tmp = 'PLTE';
- $tmp .= $pal;
- $out .= $tmp;
- $out .= $this->ndword(crc32($tmp));
- }
- ///////////////////////////////////////////////////////////////////////
- // TRANSPARENCY
- if (@$this->m_img->m_bTrans && ($nColors > 0)) {
- $out .= $this->ndword($nColors);
- $tmp = 'tRNS';
- for ($i = 0; $i < $nColors; $i++) {
- $tmp .= ($i == $this->m_img->m_nTrans) ? "\x00" : "\xFF";
- }
- $out .= $tmp;
- $out .= $this->ndword(crc32($tmp));
- }
- ///////////////////////////////////////////////////////////////////////
- // DATA BITS
- $out .= $this->ndword(strlen($bmp));
- $tmp = 'IDAT';
- $tmp .= $bmp;
- $out .= $tmp;
- $out .= $this->ndword(crc32($tmp));
- ///////////////////////////////////////////////////////////////////////
- // END OF FILE
- $out .= "\x00\x00\x00\x00IEND\xAE\x42\x60\x82";
-
- return $out;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- // Added by James Heinrich <info@silisoftware.com> - January 5, 2003
-
- // Takes raw image data and plots it pixel-by-pixel on a new GD image and returns that
- // It's extremely slow, but the only solution when ImageCreateFromString() fails
- function getGD_PixelPlotterVersion()
- {
- if (!$this->m_bLoaded) {
- return false;
- }
-
- // PREPARE COLOR TABLE (RGBQUADs)
- if ($this->m_img->m_gih->m_bLocalClr) {
- $pal = $this->m_img->m_gih->m_colorTable->toString();
- } elseif ($this->m_gfh->m_bGlobalClr) {
- $pal = $this->m_gfh->m_colorTable->toString();
- } else {
- die('No color table available in getGD_PixelPlotterVersion()');
- }
-
- $PlottingIMG = ImageCreate($this->m_gfh->m_nWidth, $this->m_gfh->m_nHeight);
- $NumColorsInPal = floor(strlen($pal) / 3);
- for ($i = 0; $i < $NumColorsInPal; $i++) {
- $ThisImageColor[$i] = ImageColorAllocate(
- $PlottingIMG,
- ord($pal{(($i * 3) + 0)}),
- ord($pal{(($i * 3) + 1)}),
- ord($pal{(($i * 3) + 2)}));
- }
-
- // PREPARE BITMAP BITS
- $data = $this->m_img->m_data;
- $nPxl = ($this->m_gfh->m_nHeight - 1) * $this->m_gfh->m_nWidth;
- for ($y = 0; $y < $this->m_gfh->m_nHeight; $y++) {
- set_time_limit(30);
- for ($x = 0; $x < $this->m_gfh->m_nWidth; $x++, $nPxl++) {
- if (
- ($x >= $this->m_img->m_gih->m_nLeft) &&
- ($y >= $this->m_img->m_gih->m_nTop) &&
- ($x < ($this->m_img->m_gih->m_nLeft + $this->m_img->m_gih->m_nWidth)) &&
- ($y < ($this->m_img->m_gih->m_nTop + $this->m_img->m_gih->m_nHeight))) {
- // PART OF IMAGE
- if (@$this->m_img->m_bTrans && (ord($data{$nPxl}) == $this->m_img->m_nTrans)) {
- ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[$this->m_gfh->m_nBgColor]);
- } else {
- ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[ord($data{$nPxl})]);
- }
- } else {
- // BACKGROUND
- ImageSetPixel($PlottingIMG, $x, $this->m_gfh->m_nHeight - $y - 1, $ThisImageColor[$this->m_gfh->m_nBgColor]);
- }
- }
- $nPxl -= $this->m_gfh->m_nWidth << 1;
-
- }
-
- return $PlottingIMG;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function dword($val)
- {
- $val = intval($val);
- return chr($val & 0xFF).chr(($val & 0xFF00) >> 8).chr(($val & 0xFF0000) >> 16).chr(($val & 0xFF000000) >> 24);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function ndword($val)
- {
- $val = intval($val);
- return chr(($val & 0xFF000000) >> 24).chr(($val & 0xFF0000) >> 16).chr(($val & 0xFF00) >> 8).chr($val & 0xFF);
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function width()
- {
- return $this->m_gfh->m_nWidth;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function height()
- {
- return $this->m_gfh->m_nHeight;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function comment()
- {
- return $this->m_img->m_lpComm;
- }
-
- ///////////////////////////////////////////////////////////////////////////
-
- function loaded()
- {
- return $this->m_bLoaded;
- }
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-?>
\ No newline at end of file
projects / atutor.git / blobdiff
