1<?php 2/** 3 * Handler for Microsoft's bitmap format. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, write to the Free Software Foundation, Inc., 17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 * http://www.gnu.org/copyleft/gpl.html 19 * 20 * @file 21 * @ingroup Media 22 */ 23 24/** 25 * Handler for Microsoft's bitmap format; getimagesize() doesn't 26 * support these files 27 * 28 * @ingroup Media 29 */ 30class BmpHandler extends BitmapHandler { 31 /** 32 * @param File $file 33 * @return bool 34 */ 35 public function mustRender( $file ) { 36 return true; 37 } 38 39 /** 40 * Render files as PNG 41 * 42 * @param string $ext 43 * @param string $mime 44 * @param array|null $params 45 * @return array 46 */ 47 public function getThumbType( $ext, $mime, $params = null ) { 48 return [ 'png', 'image/png' ]; 49 } 50 51 /** 52 * Get width and height from the bmp header. 53 * 54 * @param File|FSFile $image 55 * @param string $filename 56 * @return array|false 57 */ 58 public function getImageSize( $image, $filename ) { 59 $f = fopen( $filename, 'rb' ); 60 if ( !$f ) { 61 return false; 62 } 63 $header = fread( $f, 54 ); 64 fclose( $f ); 65 66 // Extract binary form of width and height from the header 67 $w = substr( $header, 18, 4 ); 68 $h = substr( $header, 22, 4 ); 69 70 // Convert the unsigned long 32 bits (little endian): 71 try { 72 $w = wfUnpack( 'V', $w, 4 ); 73 $h = wfUnpack( 'V', $h, 4 ); 74 } catch ( Exception $e ) { 75 return false; 76 } 77 78 return [ $w[1], $h[1] ]; 79 } 80} 81