| Index: trunk/extensions/VipsScaler/VipsScaler.i18n.php |
| — | — | @@ -0,0 +1,5 @@ |
| | 2 | +<?php |
| | 3 | +$messages = array(); |
| | 4 | +$messages['en'] = array( |
| | 5 | + 'vipsscaler-desc' => 'Create thumbnails using VIPS.' |
| | 6 | +); |
| \ No newline at end of file |
| Property changes on: trunk/extensions/VipsScaler/VipsScaler.i18n.php |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| 1 | 7 | + native |
| Index: trunk/extensions/VipsScaler/VipsScaler.php |
| — | — | @@ -0,0 +1,38 @@ |
| | 2 | +<?php |
| | 3 | +/** |
| | 4 | + * Copyright © Bryan Tong Minh, 2011 |
| | 5 | + * |
| | 6 | + * This program is free software; you can redistribute it and/or modify |
| | 7 | + * it under the terms of the GNU General Public License as published by |
| | 8 | + * the Free Software Foundation; either version 2 of the License, or |
| | 9 | + * (at your option) any later version. |
| | 10 | + * |
| | 11 | + * This program is distributed in the hope that it will be useful, |
| | 12 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 13 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 14 | + * GNU General Public License for more details. |
| | 15 | + * |
| | 16 | + * You should have received a copy of the GNU General Public License along |
| | 17 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| | 18 | + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| | 19 | + * http://www.gnu.org/copyleft/gpl.html |
| | 20 | + */ |
| | 21 | + |
| | 22 | +$wgExtensionCredits['media'][] = array( |
| | 23 | + 'path' => __FILE__, |
| | 24 | + 'name' => 'VipsScaler', |
| | 25 | + 'author' => array( 'Bryan Tong Minh' ), |
| | 26 | + 'descriptionmsg' => 'vipsscaler-desc', |
| | 27 | + 'url' => 'http://www.mediawiki.org/wiki/VipsScaler', |
| | 28 | +); |
| | 29 | + |
| | 30 | +$dir = dirname( __FILE__ ); |
| | 31 | + |
| | 32 | +$wgAutoloadClasses['VipsScaler'] = "$dir/VipsScaler_body.php"; |
| | 33 | +$wgExtensionMessagesFiles['VipsScaler'] = "$dir/VipsScaler.i18n.php"; |
| | 34 | + |
| | 35 | +$wgHooks['BitmapHandlerTransform'][] = 'VipsScaler::onTransform'; |
| | 36 | + |
| | 37 | +# Download vips from http://www.vips.ecs.soton.ac.uk/ |
| | 38 | +$wgVipsCommand = 'vips'; |
| | 39 | +$wgVipsConditions = array(); |
| Property changes on: trunk/extensions/VipsScaler/VipsScaler.php |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| 1 | 40 | + native |
| Index: trunk/extensions/VipsScaler/VipsScaler_body.php |
| — | — | @@ -0,0 +1,154 @@ |
| | 2 | +<?php |
| | 3 | +class VipsScaler { |
| | 4 | + /** |
| | 5 | + * Hook to BitmapHandlerTransform. Transforms the file using VIPS if it |
| | 6 | + * matches a condition in $wgVipsConditions |
| | 7 | + * |
| | 8 | + * @param BitmapHandler $handler |
| | 9 | + * @param File $file |
| | 10 | + * @param array $params |
| | 11 | + * @param MediaTransformOutput $mto |
| | 12 | + */ |
| | 13 | + public static function onTransform( $handler, $file, &$params, &$mto ) { |
| | 14 | + # Check $wgVipsConditions |
| | 15 | + if ( !self::shouldHandle( $handler, $file, $params ) ) { |
| | 16 | + return true; |
| | 17 | + } |
| | 18 | + |
| | 19 | + # Get the proper im_XXX2vips handler |
| | 20 | + $vipsHandler = self::getVipsHandler( $file ); |
| | 21 | + if ( !$vipsHandler ) { |
| | 22 | + return true; |
| | 23 | + } |
| | 24 | + |
| | 25 | + # Get a temporary file with .v extension |
| | 26 | + $tmp = self::makeTempV(); |
| | 27 | + # Convert the source image to a .v file |
| | 28 | + list( $err, $retval ) = self::vips( $vipsHandler, $params['srcPath'], $tmp ); |
| | 29 | + if ( $retval != 0 ) { |
| | 30 | + wfDebug( __METHOD__ . ": $vipsHandler failed!\n" ); |
| | 31 | + unlink( $tmp ); |
| | 32 | + $mto = $handler->getMediaTransformError( $params, $err ); |
| | 33 | + return false; |
| | 34 | + } |
| | 35 | + |
| | 36 | + # Rotate if necessary |
| | 37 | + $rotation = 360 - $handler->getRotation( $file ); |
| | 38 | + if ( $rotation % 360 != 0 && $rotation % 90 == 0 ) { |
| | 39 | + $tmp2 = self::makeTempV(); |
| | 40 | + |
| | 41 | + list( $err, $retval ) = self::vips( "im_rot{$rotation}", $tmp, $tmp2 ); |
| | 42 | + unlink( $tmp ); |
| | 43 | + if ( $retval != 0 ) { |
| | 44 | + unlink( $tmp2 ); |
| | 45 | + $mto = $handler->getMediaTransformError( $params, $err ); |
| | 46 | + return false; |
| | 47 | + } |
| | 48 | + |
| | 49 | + # Set the new rotated file |
| | 50 | + $tmp = $tmp2; |
| | 51 | + } |
| | 52 | + |
| | 53 | + # Scale the image to the final output |
| | 54 | + list( $err, $retval ) = self::vips( 'im_resize_linear', $tmp, |
| | 55 | + $params['dstPath'], $params['physicalWidth'], $params['physicalHeight'] ); |
| | 56 | + # Remove the temp file |
| | 57 | + unlink( $tmp ); |
| | 58 | + if ( $retval != 0 ) { |
| | 59 | + $mto = $handler->getMediaTransformError( $params, $err ); |
| | 60 | + return false; |
| | 61 | + } |
| | 62 | + |
| | 63 | + # Set the output variable |
| | 64 | + $mto = new ThumbnailImage( $file, $params['dstUrl'], |
| | 65 | + $params['clientWidth'], $params['clientHeight'], $params['dstPath'] ); |
| | 66 | + |
| | 67 | + # Stop processing |
| | 68 | + return false; |
| | 69 | + |
| | 70 | + } |
| | 71 | + |
| | 72 | + /** |
| | 73 | + * Call the vips binary with varargs and returns the error output and |
| | 74 | + * return value. |
| | 75 | + * |
| | 76 | + * @param varargs |
| | 77 | + * @return array |
| | 78 | + */ |
| | 79 | + protected static function vips( /* varargs */ ) { |
| | 80 | + global $wgVipsCommand; |
| | 81 | + |
| | 82 | + $args = func_get_args(); |
| | 83 | + $cmd = wfEscapeShellArg( $wgVipsCommand ); |
| | 84 | + foreach ( $args as $arg ) { |
| | 85 | + $cmd .= ' ' . wfEscapeShellArg( $arg ); |
| | 86 | + } |
| | 87 | + |
| | 88 | + $retval = 0; |
| | 89 | + $err = wfShellExec( $cmd, $retval ); |
| | 90 | + return array( $err, $retval ); |
| | 91 | + } |
| | 92 | + |
| | 93 | + /** |
| | 94 | + * Check the file and params against $wgVipsConditions |
| | 95 | + * |
| | 96 | + * @param BitmapHandler $handler |
| | 97 | + * @param File $file |
| | 98 | + * @param array $params |
| | 99 | + * @return bool |
| | 100 | + */ |
| | 101 | + protected static function shouldHandle( $handler, $file, $params ) { |
| | 102 | + global $wgVipsConditions; |
| | 103 | + # Iterate over conditions |
| | 104 | + foreach ( $wgVipsConditions as $condition ) { |
| | 105 | + if ( isset( $condition['mimeType'] ) && |
| | 106 | + $file->getMimeType() != $condition['mimeType'] ) { |
| | 107 | + continue; |
| | 108 | + } |
| | 109 | + $area = $handler->getImageArea( $file, $params['srcWidth'], $params['srcHeight'] ); |
| | 110 | + if ( isset( $condition['minArea'] ) && $area < $condition['minArea'] ) { |
| | 111 | + continue; |
| | 112 | + } |
| | 113 | + if ( isset( $condition['maxArea'] ) && $area > $condition['maxArea'] ) { |
| | 114 | + continue; |
| | 115 | + } |
| | 116 | + |
| | 117 | + # This condition passed |
| | 118 | + return true; |
| | 119 | + } |
| | 120 | + # All conditions failed |
| | 121 | + return false; |
| | 122 | + } |
| | 123 | + |
| | 124 | + /** |
| | 125 | + * Return the appropriate im_XXX2vips handler for this file |
| | 126 | + * @param File $file |
| | 127 | + * @return mixed String or false |
| | 128 | + */ |
| | 129 | + protected static function getVipsHandler( $file ) { |
| | 130 | + list( $major, $minor ) = File::splitMime( $file->getMimeType() ); |
| | 131 | + |
| | 132 | + if ( $major == 'image' && in_array( $minor, array( 'jpeg', 'png', 'tiff' ) ) ) { |
| | 133 | + return "im_{$minor}2vips"; |
| | 134 | + } else { |
| | 135 | + return false; |
| | 136 | + } |
| | 137 | + } |
| | 138 | + |
| | 139 | + /** |
| | 140 | + * Generate a random, non-existent temporary file with a .v extension. |
| | 141 | + * |
| | 142 | + * @return string |
| | 143 | + */ |
| | 144 | + protected static function makeTempV() { |
| | 145 | + do { |
| | 146 | + # Generate a random file |
| | 147 | + $fileName = wfTempDir() . DIRECTORY_SEPARATOR . |
| | 148 | + dechex( mt_rand() ) . dechex( mt_rand() ) . '.v'; |
| | 149 | + } while ( file_exists( $fileName ) ); |
| | 150 | + # Create the file |
| | 151 | + touch( $fileName ); |
| | 152 | + |
| | 153 | + return $fileName; |
| | 154 | + } |
| | 155 | +} |
| \ No newline at end of file |
| Property changes on: trunk/extensions/VipsScaler/VipsScaler_body.php |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| 1 | 156 | + native |