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<?php
/**
* Handler for Microsoft's bitmap format.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Media
*/
/**
* Handler for Microsoft's bitmap format; getimagesize() doesn't
* support these files
*
* @ingroup Media
*/
class BmpHandler extends BitmapHandler {
/**
* @param $file
* @return bool
*/
function mustRender( $file ) {
return true;
}
/**
* Render files as PNG
*
* @param $text
* @param $mime
* @param $params
* @return array
*/
function getThumbType( $text, $mime, $params = null ) {
return array( 'png', 'image/png' );
}
/**
* Get width and height from the bmp header.
*
* @param $image
* @param $filename
* @return array
*/
function getImageSize( $image, $filename ) {
$f = fopen( $filename, 'rb' );
if( !$f ) {
return false;
}
$header = fread( $f, 54 );
fclose($f);
// Extract binary form of width and height from the header
$w = substr( $header, 18, 4);
$h = substr( $header, 22, 4);
// Convert the unsigned long 32 bits (little endian):
try {
$w = wfUnpack( 'V', $w, 4 );
$h = wfUnpack( 'V', $h, 4 );
} catch ( MWException $e ) {
return false;
}
return array( $w[1], $h[1] );
}
}
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