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<?php
/**
* $Header: /cvsroot/bitweaver/_bit_liberty/plugins/processor.magickwand.php,v 1.9 2007/06/23 17:29:57 squareing Exp $
*
* Image processor - extension: php-magickwand
* @package liberty
* @author spider <spider@steelsun.com>
*/
/**
* liberty_magickwand_resize_image
*
* @param array $pFileHash
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_resize_image( &$pFileHash, $pThumbnail = FALSE ) {
global $gBitSystem;
// static var here is crucial
static $rgbConverts = array();
$magickWand = NewMagickWand();
$pFileHash['error'] = NULL;
$ret = NULL;
$isPdf = preg_match( '/pdf/i', $pFileHash['type'] );
if( !empty( $pFileHash['source_file'] ) && is_file( $pFileHash['source_file'] ) ) {
// This has to come BEFORE the MagickReadImage
if( $isPdf ) {
MagickSetImageUnits( $magickWand, MW_PixelsPerInchResolution );
$rez = empty( $pFileHash['max_width'] ) || $pFileHash['max_width'] == MAX_THUMBNAIL_DIMENSION ? 250 : 72;
MagickSetResolution( $magickWand, 300, 300 );
}
if( $error = liberty_magickwand_check_error( MagickReadImage( $magickWand, $pFileHash['source_file'] ), $magickWand ) ) {
// $pFileHash['error'] = $error;
$destUrl = liberty_process_generic( $pFileHash, FALSE );
} else {
if( MagickGetImageColorspace( $magickWand ) == MW_CMYKColorspace ) {
MagickRemoveImageProfile( $magickWand, "ICC" );
MagickSetImageProfile( $magickWand, 'ICC', file_get_contents( UTIL_PKG_PATH.'icc/USWebCoatedSWOP.icc' ) );
MagickProfileImage($magickWand, 'ICC', file_get_contents( UTIL_PKG_PATH.'icc/srgb.icm' ) );
MagickSetImageColorspace( $magickWand, MW_RGBColorspace );
$pFileHash['colorspace_conversion'] = TRUE;
}
if( $isPdf ) {
MagickResetIterator( $magickWand );
MagickNextImage( $magickWand );
}
MagickSetImageCompressionQuality( $magickWand, 85 );
$iwidth = round( MagickGetImageWidth( $magickWand ) );
$iheight = round( MagickGetImageHeight( $magickWand ) );
// this does not seem to be needed. magickwand will work out what to do by using the destination file extension
//MagickSetImageFormat( $magickWand, $format );
if( empty( $pFileHash['max_width'] ) || empty( $pFileHash['max_height'] ) || $pFileHash['max_width'] == MAX_THUMBNAIL_DIMENSION || $pFileHash['max_height'] == MAX_THUMBNAIL_DIMENSION ) {
$pFileHash['max_width'] = $iwidth;
$pFileHash['max_height'] = $iheight;
} elseif( (($iwidth / $iheight) < 1) && !empty( $pFileHash['max_width'] ) && !empty( $pFileHash['max_height'] ) ) {
// we have a portrait image, flip everything
$temp = $pFileHash['max_width'];
$pFileHash['max_height'] = $pFileHash['max_width'];
$pFileHash['max_width'] = round( ($iwidth / $iheight) * $pFileHash['max_height'] );
} elseif( !empty( $pFileHash['max_width'] ) ) {
$pFileHash['max_height'] = round( ($iheight / $iwidth) * $pFileHash['max_width'] );
}
// Make sure not to scale up
if( $pFileHash['max_width'] > $iwidth && $pFileHash['max_height'] > $iheight) {
$pFileHash['max_width'] = $iwidth;
$pFileHash['max_height'] = $iheight;
}
$itype = MagickGetImageMimeType( $magickWand );
// override $mimeExt if we have a custom setting for it
if( $gBitSystem->isFeatureActive( 'liberty_thumbnail_format' )) {
$mimeExt = $gBitSystem->getConfig( 'liberty_thumbnail_format' );
} else {
list( $type, $mimeExt ) = split( '/', strtolower( $itype ));
}
if( preg_match( "!(png|gif)!", $mimeExt )) {
$targetType = $mimeExt;
$destExt = '.'.$mimeExt;
} else {
$targetType = 'jpeg';
$destExt = '.jpg';
}
if( !empty( $pFileHash['max_width'] ) && !empty( $pFileHash['max_height'] ) && ( ($pFileHash['max_width'] < $iwidth || $pFileHash['max_height'] < $iheight ) || $mimeExt != $targetType ) || !empty( $pFileHash['colorspace_conversion'] ) ) {
$destUrl = $pFileHash['dest_path'].$pFileHash['dest_base_name'].$destExt;
$destFile = BIT_ROOT_PATH.'/'.$destUrl;
$pFileHash['name'] = $pFileHash['dest_base_name'].$destExt;
// Alternate Filter settings can seen here http://www.dylanbeattie.net/magick/filters/result.html
if ( $error = liberty_magickwand_check_error( MagickResizeImage( $magickWand, $pFileHash['max_width'], $pFileHash['max_height'], MW_CatromFilter, 1.00 ), $magickWand ) ) {
$pFileHash['error'] .= $error;
}
if( $error = liberty_magickwand_check_error( MagickWriteImage( $magickWand, $destFile ), $magickWand ) ) {
$pFileHash['error'] .= $error;
}
$pFileHash['size'] = filesize( $destFile );
} else {
$destUrl = liberty_process_generic( $pFileHash, FALSE );
}
}
$ret = $destUrl;
} else {
$pFileHash['error'] = "No source file to resize";
}
DestroyMagickWand( $magickWand );
return $ret;
}
/**
* liberty_magickwand_rotate_image
*
* @param array $pFileHash
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_rotate_image( &$pFileHash ) {
$ret = FALSE;
$magickWand = NewMagickWand();
$pFileHash['error'] = NULL;
if( !empty( $pFileHash['source_file'] ) && is_file( $pFileHash['source_file'] ) ) {
if( $error = liberty_magickwand_check_error( MagickReadImage( $magickWand, $pFileHash['source_file'] ), $magickWand ) ) {
$pFileHash['error'] = $error;
} elseif( empty( $pFileHash['degrees'] ) || !is_numeric( $pFileHash['degrees'] ) ) {
$pFileHash['error'] = tra( 'Invalid rotation amount' );
} else {
$bgWand = NewPixelWand('white');
if( $error = liberty_magickwand_check_error( MagickRotateImage( $magickWand, $bgWand, $pFileHash['degrees'] ), $magickWand ) ) {
$pFileHash['error'] .= $error;
}
if( $error = liberty_magickwand_check_error( MagickWriteImage( $magickWand, $pFileHash['source_file'] ), $magickWand ) ) {
$pFileHash['error'] .= $error;
}
}
} else {
$pFileHash['error'] = "No source file to resize";
}
return( empty( $pFileHash['error'] ) );
}
/**
* liberty_magickwand_check_error
*
* @param array $pResult
* @param array $pWand
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_check_error( $pResult, $pWand ) {
$ret = FALSE;
if( $pResult === FALSE && WandHasException( $pWand ) ) {
$ret = 'An image processing error occurred : '.WandGetExceptionString($pWand);
}
return $ret;
}
/**
* liberty_magickwand_can_thumbnail_image
*
* @param array $pMimeType
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_can_thumbnail_image( $pMimeType ) {
$ret = FALSE;
if( !empty( $pMimeType ) ) {
// allow images, pdf, and postscript thumbnailing (eps, ai, etc...)
$ret = preg_match( '/(^image|pdf|postcript)/i', $pMimeType );
}
return $ret;
}
/**
* liberty_magickwand_convert_colorspace
*
* @param array $pFileHash
* @param string $pColorSpace - target color space, only 'grayscale' is currently supported
* @access public
* @return TRUE on success, FALSE on failure - mErrors will contain reason for failure
*/
function liberty_magickwand_convert_colorspace_image( &$pFileHash, $pColorSpace, $pThumbnail = false ) {
$ret = FALSE;
if( !empty( $pFileHash['source_file'] ) && is_file( $pFileHash['source_file'] ) ) {
$magickWand = NewMagickWand();
if( $error = liberty_magickwand_check_error( MagickReadImage( $magickWand, $pFileHash['source_file'] ), $magickWand ) ) {
bit_log_error( "MagickReadImage Failed:$error ( $pFileHash[source_file] )" );
} else {
MagickRemoveImageProfile( $magickWand, "ICC" );
switch( strtolower( $pColorSpace ) ) {
case 'grayscale':
if( MagickGetImageColorspace( $magickWand ) == MW_GRAYColorspace ) {
$ret = TRUE;
} else {
MagickSetImageColorspace( $magickWand, MW_GRAYColorspace );
if( empty( $pFileHash['dest_file'] ) ) {
$pFileHash['dest_file'] = BIT_ROOT_PATH.'/'.$pFileHash['dest_path'].$pFileHash['name'];
}
if( $error = liberty_magickwand_check_error( MagickWriteImage( $magickWand, $pFileHash['dest_file'] ), $magickWand ) ) {
bit_log_error( "MagickWriteImage Failed:$error ( $pFileHash[source_file] )" );
} else {
$ret = TRUE;
}
}
break;
}
}
DestroyMagickWand( $magickWand );
}
return $ret;
}
?>
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