示例#1
0
 function ImageMagickThumbnailToGD()
 {
     // http://www.imagemagick.org/script/command-line-options.php
     $this->useRawIMoutput = true;
     if (phpthumb_functions::gd_version()) {
         // if GD is not available, must use whatever ImageMagick can output
         // $UnAllowedParameters contains options that can only be processed in GD, not ImageMagick
         // note: 'fltr' *may* need to be processed by GD, but we'll check that in more detail below
         $UnAllowedParameters = array('xto', 'ar', 'bg', 'bc');
         // 'ra' may be part of this list, if not a multiple of 90°
         foreach ($UnAllowedParameters as $parameter) {
             if (isset($this->{$parameter})) {
                 $this->DebugMessage('$this->useRawIMoutput=false because "' . $parameter . '" is set', __FILE__, __LINE__);
                 $this->useRawIMoutput = false;
                 break;
             }
         }
     }
     $this->DebugMessage('$this->useRawIMoutput=' . ($this->useRawIMoutput ? 'true' : 'false') . ' after checking $UnAllowedParameters', __FILE__, __LINE__);
     $outputFormat = $this->thumbnailFormat;
     if (phpthumb_functions::gd_version()) {
         if ($this->useRawIMoutput) {
             switch ($this->thumbnailFormat) {
                 case 'gif':
                     $ImageCreateFunction = 'ImageCreateFromGIF';
                     $this->is_alpha = true;
                     break;
                 case 'png':
                     $ImageCreateFunction = 'ImageCreateFromPNG';
                     $this->is_alpha = true;
                     break;
                 case 'jpg':
                 case 'jpeg':
                     $ImageCreateFunction = 'ImageCreateFromJPEG';
                     break;
                 default:
                     $this->DebugMessage('Forcing output to PNG because $this->thumbnailFormat (' . $this->thumbnailFormat . ' is not a GD-supported format)', __FILE__, __LINE__);
                     $outputFormat = 'png';
                     $ImageCreateFunction = 'ImageCreateFromPNG';
                     $this->is_alpha = true;
                     $this->useRawIMoutput = false;
                     break;
             }
             if (!function_exists(@$ImageCreateFunction)) {
                 // ImageMagickThumbnailToGD() depends on ImageCreateFromPNG/ImageCreateFromGIF
                 //$this->DebugMessage('ImageMagickThumbnailToGD() aborting because '.@$ImageCreateFunction.'() is not available', __FILE__, __LINE__);
                 $this->useRawIMoutput = true;
                 //return false;
             }
         } else {
             $outputFormat = 'png';
             $ImageCreateFunction = 'ImageCreateFromPNG';
             $this->is_alpha = true;
             $this->useRawIMoutput = false;
         }
     }
     // http://freealter.org/doc_distrib/ImageMagick-5.1.1/www/convert.html
     if (!$this->sourceFilename && $this->rawImageData) {
         $this->SourceDataToTempFile();
     }
     if (!$this->sourceFilename) {
         $this->DebugMessage('ImageMagickThumbnailToGD() aborting because $this->sourceFilename is empty', __FILE__, __LINE__);
         $this->useRawIMoutput = false;
         return false;
     }
     if ($this->issafemode) {
         $this->DebugMessage('ImageMagickThumbnailToGD() aborting because safe_mode is enabled', __FILE__, __LINE__);
         $this->useRawIMoutput = false;
         return false;
     }
     // TO BE FIXED
     //if (true) {
     //	$this->DebugMessage('ImageMagickThumbnailToGD() aborting it is broken right now', __FILE__, __LINE__);
     //	$this->useRawIMoutput = false;
     //	return false;
     //}
     $commandline = $this->ImageMagickCommandlineBase();
     if ($commandline) {
         if ($IMtempfilename = $this->phpThumb_tempnam()) {
             $IMtempfilename = $this->realPathSafe($IMtempfilename);
             $IMuseExplicitImageOutputDimensions = false;
             if ($this->ImageMagickSwitchAvailable('thumbnail') && $this->config_imagemagick_use_thumbnail) {
                 $IMresizeParameter = 'thumbnail';
             } else {
                 $IMresizeParameter = 'resize';
                 // some (older? around 2002) versions of IM won't accept "-resize 100x" but require "-resize 100x100"
                 $commandline_test = $this->ImageMagickCommandlineBase() . ' logo: -resize 1x ' . phpthumb_functions::escapeshellarg_replacement($IMtempfilename) . ' 2>&1';
                 $IMresult_test = phpthumb_functions::SafeExec($commandline_test);
                 $IMuseExplicitImageOutputDimensions = preg_match('#image dimensions are zero#i', $IMresult_test);
                 $this->DebugMessage('IMuseExplicitImageOutputDimensions = ' . intval($IMuseExplicitImageOutputDimensions), __FILE__, __LINE__);
                 if ($fp_im_temp = @fopen($IMtempfilename, 'wb')) {
                     // erase temp image so ImageMagick logo doesn't get output if other processing fails
                     fclose($fp_im_temp);
                 }
             }
             if (!is_null($this->dpi) && $this->ImageMagickSwitchAvailable('density')) {
                 // for raster source formats only (WMF, PDF, etc)
                 $commandline .= ' -density ' . phpthumb_functions::escapeshellarg_replacement($this->dpi);
             }
             ob_start();
             $getimagesize = GetImageSize($this->sourceFilename);
             $GetImageSizeError = ob_get_contents();
             ob_end_clean();
             if (is_array($getimagesize)) {
                 $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') SUCCEEDED: ' . print_r($getimagesize, true), __FILE__, __LINE__);
             } else {
                 $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') FAILED with error "' . $GetImageSizeError . '"', __FILE__, __LINE__);
             }
             if (is_array($getimagesize)) {
                 $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') returned [w=' . $getimagesize[0] . ';h=' . $getimagesize[1] . ';f=' . $getimagesize[2] . ']', __FILE__, __LINE__);
                 $this->source_width = $getimagesize[0];
                 $this->source_height = $getimagesize[1];
                 $this->DebugMessage('source dimensions set to ' . $this->source_width . 'x' . $this->source_height, __FILE__, __LINE__);
                 $this->SetOrientationDependantWidthHeight();
                 if (!preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat)) {
                     // not a transparency-capable format
                     $commandline .= ' -background ' . phpthumb_functions::escapeshellarg_replacement('#' . ($this->bg ? $this->bg : 'FFFFFF'));
                     if ($getimagesize[2] == IMAGETYPE_GIF) {
                         $commandline .= ' -flatten';
                     }
                 }
                 if ($getimagesize[2] == IMAGETYPE_GIF) {
                     $commandline .= ' -coalesce';
                     // may be needed for animated GIFs
                 }
                 if ($this->source_width || $this->source_height) {
                     if ($this->zc) {
                         $borderThickness = 0;
                         if (!empty($this->fltr)) {
                             foreach ($this->fltr as $key => $value) {
                                 if (preg_match('#^bord\\|([0-9]+)#', $value, $matches)) {
                                     $borderThickness = $matches[1];
                                     break;
                                 }
                             }
                         }
                         $wAll = intval(max($this->w, $this->wp, $this->wl, $this->ws)) - 2 * $borderThickness;
                         $hAll = intval(max($this->h, $this->hp, $this->hl, $this->hs)) - 2 * $borderThickness;
                         $imAR = $this->source_width / $this->source_height;
                         $zcAR = $wAll && $hAll ? $wAll / $hAll : 1;
                         $side = phpthumb_functions::nonempty_min($this->source_width, $this->source_height, max($wAll, $hAll));
                         $sideX = phpthumb_functions::nonempty_min($this->source_width, $wAll, round($hAll * $zcAR));
                         $sideY = phpthumb_functions::nonempty_min($this->source_height, $hAll, round($wAll / $zcAR));
                         $thumbnailH = round(max($sideY, $sideY * $zcAR / $imAR));
                         $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement(($IMuseExplicitImageOutputDimensions ? $thumbnailH : '') . 'x' . $thumbnailH);
                         switch (strtoupper($this->zc)) {
                             case 'T':
                                 $commandline .= ' -gravity north';
                                 break;
                             case 'B':
                                 $commandline .= ' -gravity south';
                                 break;
                             case 'L':
                                 $commandline .= ' -gravity west';
                                 break;
                             case 'R':
                                 $commandline .= ' -gravity east';
                                 break;
                             case 'TL':
                                 $commandline .= ' -gravity northwest';
                                 break;
                             case 'TR':
                                 $commandline .= ' -gravity northeast';
                                 break;
                             case 'BL':
                                 $commandline .= ' -gravity southwest';
                                 break;
                             case 'BR':
                                 $commandline .= ' -gravity southeast';
                                 break;
                             case '1':
                             case 'C':
                             default:
                                 $commandline .= ' -gravity center';
                                 break;
                         }
                         if ($wAll > 0 && $hAll > 0) {
                             $commandline .= ' -crop ' . phpthumb_functions::escapeshellarg_replacement($wAll . 'x' . $hAll . '+0+0');
                         } else {
                             $commandline .= ' -crop ' . phpthumb_functions::escapeshellarg_replacement($side . 'x' . $side . '+0+0');
                         }
                         if ($this->ImageMagickSwitchAvailable('repage')) {
                             $commandline .= ' +repage';
                         } else {
                             $this->DebugMessage('Skipping "+repage" because ImageMagick (v' . $this->ImageMagickVersion() . ') does not support it', __FILE__, __LINE__);
                         }
                     } elseif ($this->sw || $this->sh || $this->sx || $this->sy) {
                         $crop_param = '';
                         $crop_param .= $this->sw ? $this->sw < 2 ? round($this->sw * $this->source_width) : $this->sw : $this->source_width;
                         $crop_param .= 'x' . ($this->sh ? $this->sh < 2 ? round($this->sh * $this->source_height) : $this->sh : $this->source_height);
                         $crop_param .= '+' . ($this->sx < 2 ? round($this->sx * $this->source_width) : $this->sx);
                         $crop_param .= '+' . ($this->sy < 2 ? round($this->sy * $this->source_height) : $this->sy);
                         // TO BE FIXED
                         // makes 1x1 output
                         // http://trainspotted.com/phpThumb/phpThumb.php?src=/content/CNR/47/CNR-4728-LD-L-20110723-898.jpg&w=100&h=100&far=1&f=png&fltr[]=lvl&sx=0.05&sy=0.25&sw=0.92&sh=0.42
                         // '/usr/bin/convert' -density 150 -thumbnail 100x100 -contrast-stretch '0.1%' '/var/www/vhosts/trainspotted.com/httpdocs/content/CNR/47/CNR-4728-LD-L-20110723-898.jpg[0]' png:'/var/www/vhosts/trainspotted.com/httpdocs/phpThumb/_cache/pThumbIIUlvj'
                         $commandline .= ' -crop ' . phpthumb_functions::escapeshellarg_replacement($crop_param);
                         // this is broken for aoe=1, but unsure how to fix. Send advice to info@silisoftware.com
                         if ($this->w || $this->h) {
                             //if ($this->ImageMagickSwitchAvailable('repage')) {
                             if (false) {
                                 // TO BE FIXED
                                 // newer versions of ImageMagick require -repage <geometry>
                                 $commandline .= ' -repage';
                             } else {
                                 $this->DebugMessage('Skipping "-repage" because ImageMagick (v' . $this->ImageMagickVersion() . ') does not support it', __FILE__, __LINE__);
                             }
                             if ($IMuseExplicitImageOutputDimensions) {
                                 if ($this->w && !$this->h) {
                                     $this->h = ceil($this->w / ($this->source_width / $this->source_height));
                                 } elseif ($this->h && !$this->w) {
                                     $this->w = ceil($this->h * ($this->source_width / $this->source_height));
                                 }
                             }
                             $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement($this->w . 'x' . $this->h);
                         }
                     } else {
                         if ($this->iar && intval($this->w) > 0 && intval($this->h) > 0) {
                             list($nw, $nh) = phpthumb_functions::TranslateWHbyAngle($this->w, $this->h, $this->ra);
                             $nw = round($nw) != 0 ? round($nw) : '';
                             $nh = round($nh) != 0 ? round($nh) : '';
                             $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement($nw . 'x' . $nh . '!');
                         } else {
                             $this->w = ($this->aoe || $this->far) && $this->w ? $this->w : ($this->w ? phpthumb_functions::nonempty_min($this->w, $getimagesize[0]) : '');
                             $this->h = ($this->aoe || $this->far) && $this->h ? $this->h : ($this->h ? phpthumb_functions::nonempty_min($this->h, $getimagesize[1]) : '');
                             if ($this->w || $this->h) {
                                 if ($IMuseExplicitImageOutputDimensions) {
                                     if ($this->w && !$this->h) {
                                         $this->h = ceil($this->w / ($this->source_width / $this->source_height));
                                     } elseif ($this->h && !$this->w) {
                                         $this->w = ceil($this->h * ($this->source_width / $this->source_height));
                                     }
                                 }
                                 list($nw, $nh) = phpthumb_functions::TranslateWHbyAngle($this->w, $this->h, $this->ra);
                                 $nw = round($nw) != 0 ? round($nw) : '';
                                 $nh = round($nh) != 0 ? round($nh) : '';
                                 $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement($nw . 'x' . $nh);
                             }
                         }
                     }
                 }
             } else {
                 $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') failed', __FILE__, __LINE__);
                 if ($this->w || $this->h) {
                     $exactDimensionsBang = $this->iar && intval($this->w) > 0 && intval($this->h) > 0 ? '!' : '';
                     if ($IMuseExplicitImageOutputDimensions) {
                         // unknown source aspect ratio, just put large number and hope IM figures it out
                         $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement(($this->w ? $this->w : '9999') . 'x' . ($this->h ? $this->h : '9999') . $exactDimensionsBang);
                     } else {
                         $commandline .= ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement($this->w . 'x' . $this->h . $exactDimensionsBang);
                     }
                 }
             }
             if ($this->ra) {
                 $this->ra = intval($this->ra);
                 if ($this->ImageMagickSwitchAvailable('rotate')) {
                     if (!preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat) || phpthumb_functions::version_compare_replacement($this->ImageMagickVersion(), '6.3.7', '>=')) {
                         $this->DebugMessage('Using ImageMagick rotate', __FILE__, __LINE__);
                         $commandline .= ' -rotate ' . phpthumb_functions::escapeshellarg_replacement($this->ra);
                         if ($this->ra % 90 != 0) {
                             if (preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat)) {
                                 // alpha-capable format
                                 $commandline .= ' -background rgba(255,255,255,0)';
                             } else {
                                 $commandline .= ' -background ' . phpthumb_functions::escapeshellarg_replacement('#' . ($this->bg ? $this->bg : 'FFFFFF'));
                             }
                         }
                         $this->ra = 0;
                     } else {
                         $this->DebugMessage('Not using ImageMagick rotate because alpha background buggy before v6.3.7', __FILE__, __LINE__);
                     }
                 } else {
                     $this->DebugMessage('Not using ImageMagick rotate because not supported', __FILE__, __LINE__);
                 }
             }
             $successfullyProcessedFilters = array();
             foreach ($this->fltr as $filterkey => $filtercommand) {
                 @(list($command, $parameter) = explode('|', $filtercommand, 2));
                 switch ($command) {
                     case 'brit':
                         if ($this->ImageMagickSwitchAvailable('modulate')) {
                             $commandline .= ' -modulate ' . phpthumb_functions::escapeshellarg_replacement(100 + intval($parameter) . ',100,100');
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'cont':
                         if ($this->ImageMagickSwitchAvailable('contrast')) {
                             $contDiv10 = round(intval($parameter) / 10);
                             if ($contDiv10 > 0) {
                                 $contDiv10 = min($contDiv10, 100);
                                 for ($i = 0; $i < $contDiv10; $i++) {
                                     $commandline .= ' -contrast';
                                     // increase contrast by 10%
                                 }
                             } elseif ($contDiv10 < 0) {
                                 $contDiv10 = max($contDiv10, -100);
                                 for ($i = $contDiv10; $i < 0; $i++) {
                                     $commandline .= ' +contrast';
                                     // decrease contrast by 10%
                                 }
                             } else {
                                 // do nothing
                             }
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'ds':
                         if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                             if ($parameter == 100) {
                                 $commandline .= ' -colorspace GRAY';
                                 $commandline .= ' -modulate 100,0,100';
                             } else {
                                 $commandline .= ' -modulate ' . phpthumb_functions::escapeshellarg_replacement('100,' . (100 - intval($parameter)) . ',100');
                             }
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'sat':
                         if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                             if ($parameter == -100) {
                                 $commandline .= ' -colorspace GRAY';
                                 $commandline .= ' -modulate 100,0,100';
                             } else {
                                 $commandline .= ' -modulate ' . phpthumb_functions::escapeshellarg_replacement('100,' . (100 + intval($parameter)) . ',100');
                             }
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'gray':
                         if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                             $commandline .= ' -colorspace GRAY';
                             $commandline .= ' -modulate 100,0,100';
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'clr':
                         if ($this->ImageMagickSwitchAvailable(array('fill', 'colorize'))) {
                             @(list($amount, $color) = explode('|', $parameter));
                             $commandline .= ' -fill ' . phpthumb_functions::escapeshellarg_replacement('#' . preg_replace('#[^0-9A-F]#i', '', $color));
                             $commandline .= ' -colorize ' . phpthumb_functions::escapeshellarg_replacement(min(max(intval($amount), 0), 100));
                         }
                         break;
                     case 'sep':
                         if ($this->ImageMagickSwitchAvailable('sepia-tone')) {
                             @(list($amount, $color) = explode('|', $parameter));
                             $amount = $amount ? $amount : 80;
                             if (!$color) {
                                 $commandline .= ' -sepia-tone ' . phpthumb_functions::escapeshellarg_replacement(min(max(intval($amount), 0), 100) . '%');
                                 $successfullyProcessedFilters[] = $filterkey;
                             }
                         }
                         break;
                     case 'gam':
                         @(list($amount) = explode('|', $parameter));
                         $amount = min(max(floatval($amount), 0.001), 10);
                         if (number_format($amount, 3) != '1.000') {
                             if ($this->ImageMagickSwitchAvailable('gamma')) {
                                 $commandline .= ' -gamma ' . phpthumb_functions::escapeshellarg_replacement($amount);
                                 $successfullyProcessedFilters[] = $filterkey;
                             }
                         }
                         break;
                     case 'neg':
                         if ($this->ImageMagickSwitchAvailable('negate')) {
                             $commandline .= ' -negate';
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'th':
                         @(list($amount) = explode('|', $parameter));
                         if ($this->ImageMagickSwitchAvailable(array('threshold', 'dither', 'monochrome'))) {
                             $commandline .= ' -threshold ' . phpthumb_functions::escapeshellarg_replacement(round(min(max(intval($amount), 0), 255) / 2.55) . '%');
                             $commandline .= ' -dither';
                             $commandline .= ' -monochrome';
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'rcd':
                         if ($this->ImageMagickSwitchAvailable(array('colors', 'dither'))) {
                             @(list($colors, $dither) = explode('|', $parameter));
                             $colors = $colors ? (int) $colors : 256;
                             $dither = strlen($dither) > 0 ? (bool) $dither : true;
                             $commandline .= ' -colors ' . phpthumb_functions::escapeshellarg_replacement(max($colors, 8));
                             // ImageMagick will otherwise fail with "cannot quantize to fewer than 8 colors"
                             $commandline .= $dither ? ' -dither' : ' +dither';
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'flip':
                         if ($this->ImageMagickSwitchAvailable(array('flip', 'flop'))) {
                             if (strpos(strtolower($parameter), 'x') !== false) {
                                 $commandline .= ' -flop';
                             }
                             if (strpos(strtolower($parameter), 'y') !== false) {
                                 $commandline .= ' -flip';
                             }
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'edge':
                         if ($this->ImageMagickSwitchAvailable('edge')) {
                             $parameter = !empty($parameter) ? $parameter : 2;
                             $commandline .= ' -edge ' . phpthumb_functions::escapeshellarg_replacement(!empty($parameter) ? intval($parameter) : 1);
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'emb':
                         if ($this->ImageMagickSwitchAvailable(array('emboss', 'negate'))) {
                             $parameter = !empty($parameter) ? $parameter : 2;
                             $commandline .= ' -emboss ' . phpthumb_functions::escapeshellarg_replacement(intval($parameter));
                             if ($parameter < 2) {
                                 $commandline .= ' -negate';
                                 // ImageMagick negates the image for some reason with '-emboss 1';
                             }
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'lvl':
                         @(list($band, $method, $threshold) = explode('|', $parameter));
                         $band = $band ? preg_replace('#[^RGBA\\*]#', '', strtoupper($band)) : '*';
                         $method = strlen($method) > 0 ? intval($method) : 2;
                         $threshold = strlen($threshold) > 0 ? min(max(floatval($threshold), 0), 100) : 0.1;
                         $band = preg_replace('#[^RGBA\\*]#', '', strtoupper($band));
                         if ($method > 1 && !$this->ImageMagickSwitchAvailable(array('channel', 'contrast-stretch'))) {
                             // Because ImageMagick processing happens before PHP-GD filters, and because some
                             // clipping is involved in the "lvl" filter, if "lvl" happens before "wb" then the
                             // "wb" filter will have (almost) no effect. Therefore, if "wb" is enabled then
                             // force the "lvl" filter to be processed by GD, not ImageMagick.
                             foreach ($this->fltr as $fltr_key => $fltr_value) {
                                 list($fltr_cmd) = explode('|', $fltr_value);
                                 if ($fltr_cmd == 'wb') {
                                     $this->DebugMessage('Setting "lvl" filter method to "0" (from "' . $method . '") because white-balance filter also enabled', __FILE__, __LINE__);
                                     $method = 0;
                                 }
                             }
                         }
                         switch ($method) {
                             case 0:
                                 // internal RGB
                             // internal RGB
                             case 1:
                                 // internal grayscale
                                 break;
                             case 2:
                                 // ImageMagick "contrast-stretch"
                                 if ($this->ImageMagickSwitchAvailable('contrast-stretch')) {
                                     if ($band != '*') {
                                         $commandline .= ' -channel ' . phpthumb_functions::escapeshellarg_replacement(strtoupper($band));
                                     }
                                     $threshold = preg_replace('#[^0-9\\.]#', '', $threshold);
                                     // should be unneccesary, but just to be double-sure
                                     //$commandline .= ' -contrast-stretch '.phpthumb_functions::escapeshellarg_replacement($threshold.'%');
                                     $commandline .= ' -contrast-stretch \'' . $threshold . '%\'';
                                     if ($band != '*') {
                                         $commandline .= ' +channel';
                                     }
                                     $successfullyProcessedFilters[] = $filterkey;
                                 }
                                 break;
                             case 3:
                                 // ImageMagick "normalize"
                                 if ($this->ImageMagickSwitchAvailable('normalize')) {
                                     if ($band != '*') {
                                         $commandline .= ' -channel ' . phpthumb_functions::escapeshellarg_replacement(strtoupper($band));
                                     }
                                     $commandline .= ' -normalize';
                                     if ($band != '*') {
                                         $commandline .= ' +channel';
                                     }
                                     $successfullyProcessedFilters[] = $filterkey;
                                 }
                                 break;
                             default:
                                 $this->DebugMessage('unsupported method (' . $method . ') for "lvl" filter', __FILE__, __LINE__);
                                 break;
                         }
                         if (isset($this->fltr[$filterkey]) && $method > 1) {
                             $this->fltr[$filterkey] = $command . '|' . $band . '|0|' . $threshold;
                             $this->DebugMessage('filter "lvl" remapped from method "' . $method . '" to method "0" because ImageMagick support is missing', __FILE__, __LINE__);
                         }
                         break;
                     case 'wb':
                         if ($this->ImageMagickSwitchAvailable(array('channel', 'contrast-stretch'))) {
                             @(list($threshold) = explode('|', $parameter));
                             $threshold = !empty($threshold) ? min(max(floatval($threshold), 0), 100) : 0.1;
                             $threshold = preg_replace('#[^0-9\\.]#', '', $threshold);
                             // should be unneccesary, but just to be double-sure
                             //$commandline .= ' -channel R -contrast-stretch '.phpthumb_functions::escapeshellarg_replacement($threshold.'%'); // doesn't work on Windows because most versions of PHP do not properly
                             //$commandline .= ' -channel G -contrast-stretch '.phpthumb_functions::escapeshellarg_replacement($threshold.'%'); // escape special characters (such as %) and just replace them with spaces
                             //$commandline .= ' -channel B -contrast-stretch '.phpthumb_functions::escapeshellarg_replacement($threshold.'%'); // https://bugs.php.net/bug.php?id=43261
                             $commandline .= ' -channel R -contrast-stretch \'' . $threshold . '%\'';
                             $commandline .= ' -channel G -contrast-stretch \'' . $threshold . '%\'';
                             $commandline .= ' -channel B -contrast-stretch \'' . $threshold . '%\'';
                             $commandline .= ' +channel';
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'blur':
                         if ($this->ImageMagickSwitchAvailable('blur')) {
                             @(list($radius) = explode('|', $parameter));
                             $radius = !empty($radius) ? min(max(intval($radius), 0), 25) : 1;
                             $commandline .= ' -blur ' . phpthumb_functions::escapeshellarg_replacement($radius);
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'gblr':
                         @(list($radius) = explode('|', $parameter));
                         $radius = !empty($radius) ? min(max(intval($radius), 0), 25) : 1;
                         // "-gaussian" changed to "-gaussian-blur" sometime around 2009
                         if ($this->ImageMagickSwitchAvailable('gaussian-blur')) {
                             $commandline .= ' -gaussian-blur ' . phpthumb_functions::escapeshellarg_replacement($radius);
                             $successfullyProcessedFilters[] = $filterkey;
                         } elseif ($this->ImageMagickSwitchAvailable('gaussian')) {
                             $commandline .= ' -gaussian ' . phpthumb_functions::escapeshellarg_replacement($radius);
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'usm':
                         if ($this->ImageMagickSwitchAvailable('unsharp')) {
                             @(list($amount, $radius, $threshold) = explode('|', $parameter));
                             $amount = $amount ? min(max(intval($radius), 0), 255) : 80;
                             $radius = $radius ? min(max(intval($radius), 0), 10) : 0.5;
                             $threshold = strlen($threshold) ? min(max(intval($radius), 0), 50) : 3;
                             $commandline .= ' -unsharp ' . phpthumb_functions::escapeshellarg_replacement(number_format($radius * 2 - 1, 2, '.', '') . 'x1+' . number_format($amount / 100, 2, '.', '') . '+' . number_format($threshold / 100, 2, '.', ''));
                             $successfullyProcessedFilters[] = $filterkey;
                         }
                         break;
                     case 'bord':
                         if ($this->ImageMagickSwitchAvailable(array('border', 'bordercolor', 'thumbnail', 'crop'))) {
                             if (!$this->zc) {
                                 @(list($width, $rX, $rY, $color) = explode('|', $parameter));
                                 $width = intval($width);
                                 $rX = intval($rX);
                                 $rY = intval($rY);
                                 if ($width && !$rX && !$rY) {
                                     if (!phpthumb_functions::IsHexColor($color)) {
                                         $color = !empty($this->bc) && phpthumb_functions::IsHexColor($this->bc) ? $this->bc : '000000';
                                     }
                                     $commandline .= ' -border ' . phpthumb_functions::escapeshellarg_replacement(intval($width));
                                     $commandline .= ' -bordercolor ' . phpthumb_functions::escapeshellarg_replacement('#' . $color);
                                     if (preg_match('# \\-crop "([0-9]+)x([0-9]+)\\+0\\+0" #', $commandline, $matches)) {
                                         $commandline = str_replace(' -crop "' . $matches[1] . 'x' . $matches[2] . '+0+0" ', ' -crop ' . phpthumb_functions::escapeshellarg_replacement($matches[1] - 2 * $width . 'x' . ($matches[2] - 2 * $width) . '+0+0') . ' ', $commandline);
                                     } elseif (preg_match('# \\-' . $IMresizeParameter . ' "([0-9]+)x([0-9]+)" #', $commandline, $matches)) {
                                         $commandline = str_replace(' -' . $IMresizeParameter . ' "' . $matches[1] . 'x' . $matches[2] . '" ', ' -' . $IMresizeParameter . ' ' . phpthumb_functions::escapeshellarg_replacement($matches[1] - 2 * $width . 'x' . ($matches[2] - 2 * $width)) . ' ', $commandline);
                                     }
                                     $successfullyProcessedFilters[] = $filterkey;
                                 }
                             }
                         }
                         break;
                     case 'crop':
                         break;
                     case 'sblr':
                         break;
                     case 'mean':
                         break;
                     case 'smth':
                         break;
                     case 'bvl':
                         break;
                     case 'wmi':
                         break;
                     case 'wmt':
                         break;
                     case 'over':
                         break;
                     case 'hist':
                         break;
                     case 'fram':
                         break;
                     case 'drop':
                         break;
                     case 'mask':
                         break;
                     case 'elip':
                         break;
                     case 'ric':
                         break;
                     case 'stc':
                         break;
                     case 'size':
                         break;
                     default:
                         $this->DebugMessage('Unknown $this->fltr[' . $filterkey . '] (' . $filtercommand . ') -- deleting filter command', __FILE__, __LINE__);
                         $successfullyProcessedFilters[] = $filterkey;
                         break;
                 }
                 if (!isset($this->fltr[$filterkey])) {
                     $this->DebugMessage('Processed $this->fltr[' . $filterkey . '] (' . $filtercommand . ') with ImageMagick', __FILE__, __LINE__);
                 } else {
                     $this->DebugMessage('Skipping $this->fltr[' . $filterkey . '] (' . $filtercommand . ') with ImageMagick', __FILE__, __LINE__);
                 }
             }
             $this->DebugMessage('Remaining $this->fltr after ImageMagick: (' . $this->phpThumbDebugVarDump($this->fltr) . ')', __FILE__, __LINE__);
             if (count($this->fltr) > 0) {
                 $this->useRawIMoutput = false;
             }
             if (preg_match('#jpe?g#i', $outputFormat) && $this->q) {
                 if ($this->ImageMagickSwitchAvailable(array('quality', 'interlace'))) {
                     $commandline .= ' -quality ' . phpthumb_functions::escapeshellarg_replacement($this->thumbnailQuality);
                     if ($this->config_output_interlace) {
                         // causes weird things with animated GIF... leave for JPEG only
                         $commandline .= ' -interlace line ';
                         // Use Line or Plane to create an interlaced PNG or GIF or progressive JPEG image
                     }
                 }
             }
             $commandline .= ' ' . phpthumb_functions::escapeshellarg_replacement(preg_replace('#[/\\\\]#', DIRECTORY_SEPARATOR, $this->sourceFilename) . ($outputFormat == 'gif' ? '' : '[' . intval($this->sfn) . ']'));
             // [0] means first frame of (GIF) animation, can be ignored
             $commandline .= ' ' . $outputFormat . ':' . phpthumb_functions::escapeshellarg_replacement($IMtempfilename);
             if (!$this->iswindows) {
                 $commandline .= ' 2>&1';
             }
             $this->DebugMessage('ImageMagick called as (' . $commandline . ')', __FILE__, __LINE__);
             $IMresult = phpthumb_functions::SafeExec($commandline);
             clearstatcache();
             if (!@file_exists($IMtempfilename) || !@filesize($IMtempfilename)) {
                 $this->FatalError('ImageMagick failed with message (' . trim($IMresult) . ')');
                 $this->DebugMessage('ImageMagick failed with message (' . trim($IMresult) . ')', __FILE__, __LINE__);
                 if ($this->iswindows && !$IMresult) {
                     $this->DebugMessage('Check to make sure that PHP has read+write permissions to "' . dirname($IMtempfilename) . '"', __FILE__, __LINE__);
                 }
             } else {
                 foreach ($successfullyProcessedFilters as $dummy => $filterkey) {
                     unset($this->fltr[$filterkey]);
                 }
                 $this->IMresizedData = file_get_contents($IMtempfilename);
                 $getimagesize_imresized = @GetImageSize($IMtempfilename);
                 $this->DebugMessage('GetImageSize(' . $IMtempfilename . ') returned [w=' . $getimagesize_imresized[0] . ';h=' . $getimagesize_imresized[1] . ';f=' . $getimagesize_imresized[2] . ']', __FILE__, __LINE__);
                 if ($this->config_max_source_pixels > 0 && $getimagesize_imresized[0] * $getimagesize_imresized[1] > $this->config_max_source_pixels) {
                     $this->DebugMessage('skipping ImageMagickThumbnailToGD::' . $ImageCreateFunction . '() because IM output is too large (' . $getimagesize_imresized[0] . 'x' . $getimagesize_imresized[0] . ' = ' . $getimagesize_imresized[0] * $getimagesize_imresized[1] . ' > ' . $this->config_max_source_pixels . ')', __FILE__, __LINE__);
                 } elseif (function_exists(@$ImageCreateFunction) && ($this->gdimg_source = @$ImageCreateFunction($IMtempfilename))) {
                     $this->source_width = ImageSX($this->gdimg_source);
                     $this->source_height = ImageSY($this->gdimg_source);
                     $this->DebugMessage('ImageMagickThumbnailToGD::' . $ImageCreateFunction . '() succeeded, $this->gdimg_source is now (' . $this->source_width . 'x' . $this->source_height . ')', __FILE__, __LINE__);
                     $this->DebugMessage('ImageMagickThumbnailToGD() returning $this->IMresizedData (' . strlen($this->IMresizedData) . ' bytes)', __FILE__, __LINE__);
                 } else {
                     $this->useRawIMoutput = true;
                     $this->DebugMessage('$this->useRawIMoutput set to TRUE because ' . @$ImageCreateFunction . '(' . $IMtempfilename . ') failed', __FILE__, __LINE__);
                 }
                 if (file_exists($IMtempfilename)) {
                     $this->DebugMessage('deleting "' . $IMtempfilename . '"', __FILE__, __LINE__);
                     @unlink($IMtempfilename);
                 }
                 return true;
             }
             if (file_exists($IMtempfilename)) {
                 $this->DebugMessage('deleting "' . $IMtempfilename . '"', __FILE__, __LINE__);
                 @unlink($IMtempfilename);
             }
         } elseif ($this->issafemode) {
             $this->DebugMessage('ImageMagickThumbnailToGD() aborting because PHP safe_mode is enabled and phpThumb_tempnam() failed', __FILE__, __LINE__);
             $this->useRawIMoutput = false;
         } else {
             if (file_exists($IMtempfilename)) {
                 $this->DebugMessage('deleting "' . $IMtempfilename . '"', __FILE__, __LINE__);
                 @unlink($IMtempfilename);
             }
             $this->DebugMessage('ImageMagickThumbnailToGD() aborting, phpThumb_tempnam() failed', __FILE__, __LINE__);
         }
     } else {
         $this->DebugMessage('ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed', __FILE__, __LINE__);
     }
     $this->useRawIMoutput = false;
     return false;
 }