1168 lines
29 KiB
PHP
1168 lines
29 KiB
PHP
<?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;
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
?>
|
