5731762a34
I did not use the wrapper method for those few occurences since it was too much work. I'm sorry :-D
1514 lines
78 KiB
PHP
1514 lines
78 KiB
PHP
<?
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/******************************************************************************
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*
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* Filename: Photoshop_IRB.php
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*
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* Description: Provides functions for reading and writing information to/from
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* the 'App 13' Photoshop Information Resource Block segment of
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* JPEG format files
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*
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* Author: Evan Hunter
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*
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* Date: 23/7/2004
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*
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* Project: PHP JPEG Metadata Toolkit
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*
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* Revision: 1.11
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*
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* Changes: 1.00 -> 1.02 : changed get_Photoshop_IRB to work with corrupted
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* resource names which Photoshop can still read
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* 1.02 -> 1.03 : Fixed put_Photoshop_IRB to output "Photoshop 3.0\x00"
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* string with every APP13 segment, not just the first one
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* 1.03 -> 1.10 : changed get_Photoshop_IRB to fix processing of embedded resource names,
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* after discovering that Photoshop does not process
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* resource names according to the standard :
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* "Adobe Photoshop 6.0 File Formats Specification, Version 6.0, Release 2, November 2000"
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* This is an update to the change 1.00 -> 1.02, which was not fully correct
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* changed put_Photoshop_IRB to fix the writing of embedded resource name,
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* to avoid creating blank resources, and to fix a problem
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* causing the IRB block to be incorrectly positioned if no APP segments existed.
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* changed get_Photoshop_IPTC to initialise the output array correctly.
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* 1.10 -> 1.11 : Moved code out of get_Photoshop_IRB into new function unpack_Photoshop_IRB_Data
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* to allow reading of IRB blocks embedded within EXIF (for TIFF Files)
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* Moved code out of put_Photoshop_IRB into new function pack_Photoshop_IRB_Data
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* to allow writing of IRB blocks embedded within EXIF (for TIFF Files)
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* Enabled the usage of $GLOBALS['HIDE_UNKNOWN_TAGS'] to hide unknown resources
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* changed Interpret_IRB_to_HTML to allow thumbnail links to work when
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* toolkit is portable across directories
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*
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*
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* URL: http://electronics.ozhiker.com
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*
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* Copyright: Copyright Evan Hunter 2004
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*
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* License: This file is part of the PHP JPEG Metadata Toolkit.
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*
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* The PHP JPEG Metadata Toolkit is free software; you can
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* redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The PHP JPEG Metadata Toolkit is distributed in the hope
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* that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with the PHP JPEG Metadata Toolkit; if not,
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* write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* If you require a different license for commercial or other
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* purposes, please contact the author: evan@ozhiker.com
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*
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******************************************************************************/
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// Change: as of version 1.11 - added to ensure the HIDE_UNKNOWN_TAGS variable is set even if EXIF.php is not included
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if ( !isset( $GLOBALS['HIDE_UNKNOWN_TAGS'] ) ) $GLOBALS['HIDE_UNKNOWN_TAGS']= FALSE;
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include_once $JPEG_TOOLKIT.'IPTC.php';
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include_once $JPEG_TOOLKIT.'Unicode.php';
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// TODO: Many Photoshop IRB resources not interpeted
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// TODO: Obtain a copy of the Photoshop CS File Format Specification
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// TODO: Find out what Photoshop IRB resources 1061, 1062 & 1064 are
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// TODO: Test get_Photoshop_IRB and put_Photoshop_IRB with multiple APP13 segments
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/******************************************************************************
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*
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* Function: get_Photoshop_IRB
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*
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* Description: Retrieves the Photoshop Information Resource Block (IRB) information
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* from an App13 JPEG segment and returns it as an array. This may
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* include IPTC-NAA IIM Information. Uses information
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* supplied by the get_jpeg_header_data function
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*
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* Parameters: jpeg_header_data - a JPEG header data array in the same format
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* as from get_jpeg_header_data
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*
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* Returns: IRBdata - The array of Photoshop IRB records
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* FALSE - if an APP 13 Photoshop IRB segment could not be found,
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* or if an error occured
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*
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******************************************************************************/
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function get_Photoshop_IRB( $jpeg_header_data )
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{
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// Photoshop Image Resource blocks can span several JPEG APP13 segments, so we need to join them up if there are more than one
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$joined_IRB = "";
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//Cycle through the header segments
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for( $i = 0; $i < count( $jpeg_header_data ); $i++ )
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{
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// If we find an APP13 header,
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if ( strcmp ( $jpeg_header_data[$i]['SegName'], "APP13" ) == 0 )
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{
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// And if it has the photoshop label,
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if( strncmp ( $jpeg_header_data[$i]['SegData'], "Photoshop 3.0\x00", 14) == 0 )
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{
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// join it to the other previous IRB data
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$joined_IRB .= substr ( $jpeg_header_data[$i]['SegData'], 14 );
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}
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}
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}
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// If there was some Photoshop IRB information found,
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if ( $joined_IRB != "" )
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{
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// Found a Photoshop Image Resource Block - extract it.
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// Change: Moved code into unpack_Photoshop_IRB_Data to allow TIFF reading as of 1.11
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return unpack_Photoshop_IRB_Data( $joined_IRB );
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}
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else
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{
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// No Photoshop IRB found
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return FALSE;
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}
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}
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/******************************************************************************
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* End of Function: get_Photoshop_IRB
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******************************************************************************/
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/******************************************************************************
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*
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* Function: put_Photoshop_IRB
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*
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* Description: Adds or modifies the Photoshop Information Resource Block (IRB)
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* information from an App13 JPEG segment. If a Photoshop IRB already
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* exists, it is replaced, otherwise a new one is inserted, using the
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* supplied data. Uses information supplied by the get_jpeg_header_data
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* function
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*
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* Parameters: jpeg_header_data - a JPEG header data array in the same format
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* as from get_jpeg_header_data
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* new_IRB_data - an array of the data to be stored in the Photoshop
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* IRB segment. Should be in the same format as received
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* from get_Photoshop_IRB
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*
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* Returns: jpeg_header_data - the JPEG header data array with the
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* Photoshop IRB added.
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* FALSE - if an error occured
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*
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******************************************************************************/
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function put_Photoshop_IRB( $jpeg_header_data, $new_IRB_data )
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{
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// Delete all existing Photoshop IRB blocks - the new one will replace them
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//Cycle through the header segments
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for( $i = 0; $i < count( $jpeg_header_data ) ; $i++ )
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{
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// If we find an APP13 header,
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if ( strcmp ( $jpeg_header_data[$i]['SegName'], "APP13" ) == 0 )
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{
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// And if it has the photoshop label,
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if( strncmp ( $jpeg_header_data[$i]['SegData'], "Photoshop 3.0\x00", 14) == 0 )
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{
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// Delete the block information - it needs to be rebuilt
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array_splice( $jpeg_header_data, $i, 1 );
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}
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}
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}
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// Now we have deleted the pre-existing blocks
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// Retrieve the Packed Photoshop IRB Data
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// Change: Moved code into pack_Photoshop_IRB_Data to allow TIFF writing as of 1.11
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$packed_IRB_data = pack_Photoshop_IRB_Data( $new_IRB_data );
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// Change : This section changed to fix incorrect positioning of IRB segment, as of revision 1.10
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// when there are no APP segments present
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//Cycle through the header segments in reverse order (to find where to put the APP13 block - after any APP0 to APP12 blocks)
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$i = count( $jpeg_header_data ) - 1;
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while (( $i >= 0 ) && ( ( $jpeg_header_data[$i]['SegType'] > 0xED ) || ( $jpeg_header_data[$i]['SegType'] < 0xE0 ) ) )
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{
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$i--;
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}
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// Cycle through the packed output data until it's size is less than 32000 bytes, outputting each 32000 byte block to an APP13 segment
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while ( strlen( $packed_IRB_data ) > 32000 )
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{
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// Change: Fixed put_Photoshop_IRB to output "Photoshop 3.0\x00" string with every APP13 segment, not just the first one, as of 1.03
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// Write a 32000 byte APP13 segment
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array_splice($jpeg_header_data, $i +1 , 0, array( "SegType" => 0xED,
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"SegName" => "APP13",
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"SegDesc" => $GLOBALS[ "JPEG_Segment_Descriptions" ][ 0xED ],
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"SegData" => "Photoshop 3.0\x00" . substr( $packed_IRB_data,0,32000) ) );
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// Delete the 32000 bytes from the packed output data, that were just output
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$packed_IRB_data = substr_replace($packed_IRB_data, '', 0, 32000);
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$i++;
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}
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// Write the last block of packed output data to an APP13 segment - Note array_splice doesn't work with multidimensional arrays, hence inserting a blank string
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array_splice($jpeg_header_data, $i + 1 , 0, "" );
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$jpeg_header_data[$i + 1] = array( "SegType" => 0xED,
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"SegName" => "APP13",
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"SegDesc" => $GLOBALS[ "JPEG_Segment_Descriptions" ][ 0xED ],
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"SegData" => "Photoshop 3.0\x00" . $packed_IRB_data );
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return $jpeg_header_data;
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}
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/******************************************************************************
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* End of Function: put_Photoshop_IRB
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******************************************************************************/
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/******************************************************************************
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*
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* Function: get_Photoshop_IPTC
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*
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* Description: Retrieves IPTC-NAA IIM information from within a Photoshop
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* IRB (if it is present) and returns it in an array. Uses
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* information supplied by the get_jpeg_header_data function
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*
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* Parameters: Photoshop_IRB_data - an array of Photoshop IRB records, as
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* returned from get_Photoshop_IRB
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*
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* Returns: IPTC_Data_Out - The array of IPTC-NAA IIM records
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* FALSE - if an IPTC-NAA IIM record could not be found, or if
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* an error occured
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*
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******************************************************************************/
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function get_Photoshop_IPTC( $Photoshop_IRB_data )
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{
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// Change: Initialise array correctly, as of revision 1.10
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$IPTC_Data_Out = array();
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//Cycle through the Photoshop 8BIM records looking for the IPTC-NAA record
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for( $i = 0; $i < count( $Photoshop_IRB_data ); $i++ )
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{
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// Check if each record is a IPTC record (which has id 0x0404)
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if ( $Photoshop_IRB_data[$i]['ResID'] == 0x0404 )
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{
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// We've found an IPTC block - Decode it
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$IPTC_Data_Out = get_IPTC( $Photoshop_IRB_data[$i]['ResData'] );
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}
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}
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// If there was no records put into the output array,
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if ( count( $IPTC_Data_Out ) == 0 )
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{
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// Then return false
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return FALSE;
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}
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else
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{
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// Otherwise return the array
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return $IPTC_Data_Out;
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}
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}
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/******************************************************************************
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* End of Function: get_Photoshop_IPTC
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******************************************************************************/
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/******************************************************************************
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*
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* Function: put_Photoshop_IPTC
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*
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* Description: Inserts a new IPTC-NAA IIM resource into a Photoshop
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* IRB, or replaces an the existing resource if one is present.
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* Uses information supplied by the get_Photoshop_IRB function
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*
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* Parameters: Photoshop_IRB_data - an array of Photoshop IRB records, as
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* returned from get_Photoshop_IRB, into
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* which the IPTC-NAA IIM record will be inserted
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* new_IPTC_block - an array of IPTC-NAA records in the same format
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* as those returned by get_Photoshop_IPTC
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*
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* Returns: Photoshop_IRB_data - The Photoshop IRB array with the
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* IPTC-NAA IIM resource inserted
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*
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******************************************************************************/
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function put_Photoshop_IPTC( $Photoshop_IRB_data, $new_IPTC_block )
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{
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$iptc_block_pos = -1;
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//Cycle through the 8BIM records looking for the IPTC-NAA record
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for( $i = 0; $i < count( $Photoshop_IRB_data ); $i++ )
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{
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// Check if each record is a IPTC record (which has id 0x0404)
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if ( $Photoshop_IRB_data[$i]['ResID'] == 0x0404 )
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{
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// We've found an IPTC block - save the position
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$iptc_block_pos = $i;
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}
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}
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// If no IPTC block was found, create a new one
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if ( $iptc_block_pos == -1 )
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{
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// New block position will be at the end of the array
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$iptc_block_pos = count( $Photoshop_IRB_data );
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}
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// Write the new IRB resource to the Photoshop IRB array with no data
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$Photoshop_IRB_data[$iptc_block_pos] = array( "ResID" => 0x0404,
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"ResName" => $GLOBALS['Photoshop_ID_Names'][ 0x0404 ],
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"ResDesc" => $GLOBALS[ "Photoshop_ID_Descriptions" ][ 0x0404 ],
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"ResEmbeddedName" => "\x00\x00",
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"ResData" => put_IPTC( $new_IPTC_block ) );
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// Return the modified IRB
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return $Photoshop_IRB_data;
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}
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/******************************************************************************
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* End of Function: put_Photoshop_IPTC
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******************************************************************************/
|
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/******************************************************************************
|
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*
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* Function: Interpret_IRB_to_HTML
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*
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* Description: Generates html showing the information contained in a Photoshop
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* IRB data array, as retrieved with get_Photoshop_IRB, including
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* any IPTC-NAA IIM records found.
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*
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* Please note that the following resource numbers are not currently
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* decoded: ( Many of these do not apply to JPEG images)
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* 0x03E9, 0x03EE, 0x03EF, 0x03F0, 0x03F1, 0x03F2, 0x03F6, 0x03F9,
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* 0x03FA, 0x03FB, 0x03FD, 0x03FE, 0x0400, 0x0401, 0x0402, 0x0405,
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* 0x040E, 0x040F, 0x0410, 0x0412, 0x0413, 0x0415, 0x0416, 0x0417,
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* 0x041B, 0x041C, 0x041D, 0x0BB7
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*
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* ( Also these Obsolete resource numbers)
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* 0x03E8, 0x03EB, 0x03FC, 0x03FF, 0x0403
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*
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*
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* Parameters: IRB_array - a Photoshop IRB data array as from get_Photoshop_IRB
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* filename - the name of the JPEG file being processed ( used
|
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* by the script which displays the Photoshop thumbnail)
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*
|
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*
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* Returns: output_str - the HTML string
|
||
*
|
||
******************************************************************************/
|
||
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function Interpret_IRB_to_HTML( $IRB_array, $filename )
|
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{
|
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// Create a string to receive the HTML
|
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$output_str = "";
|
||
|
||
// Check if the Photoshop IRB array is valid
|
||
if ( $IRB_array !== FALSE )
|
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{
|
||
|
||
// Create another string to receive secondary HTML to be appended at the end
|
||
$secondary_output_str = "";
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// Add the Heading to the HTML
|
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$output_str .= "<h2 class=\"Photoshop_Main_Heading\">Contains Photoshop Information Resource Block (IRB)</h2>";
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|
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// Add Table to the HTML
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$output_str .= "<table class=\"Photoshop_Table\" border=1>\n";
|
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|
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// Cycle through each of the Photoshop IRB records, creating HTML for each
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foreach( $IRB_array as $IRB_Resource )
|
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{
|
||
// Check if the entry is a known Photoshop IRB resource
|
||
|
||
// Get the Name of the Resource
|
||
if ( array_key_exists( $IRB_Resource['ResID'], $GLOBALS[ "Photoshop_ID_Names" ] ) )
|
||
{
|
||
$Resource_Name = $GLOBALS['Photoshop_ID_Names'][ $IRB_Resource['ResID'] ];
|
||
}
|
||
else
|
||
{
|
||
// Change: Added check for $GLOBALS['HIDE_UNKNOWN_TAGS'] to allow hiding of unknown resources as of 1.11
|
||
if ( $GLOBALS['HIDE_UNKNOWN_TAGS'] == TRUE )
|
||
{
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
// Unknown Resource - Make appropriate name
|
||
$Resource_Name = "Unknown Resource (". $IRB_Resource['ResID'] .")";
|
||
}
|
||
}
|
||
|
||
// Add HTML for the resource as appropriate
|
||
switch ( $IRB_Resource['ResID'] )
|
||
{
|
||
|
||
case 0x0404 : // IPTC-NAA IIM Record
|
||
$secondary_output_str .= Interpret_IPTC_to_HTML( get_IPTC( $IRB_Resource['ResData'] ) );
|
||
break;
|
||
|
||
case 0x040B : // URL
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><a href=\"" . $IRB_Resource['ResData'] . "\">" . htmlentities( $IRB_Resource['ResData'], ENT_COMPAT, LANG_CHARSET ) ."</a></td></tr>\n";
|
||
break;
|
||
|
||
case 0x040A : // Copyright Marked
|
||
if ( hexdec( bin2hex( $IRB_Resource['ResData'] ) ) == 1 )
|
||
{
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Image is Copyrighted Material</pre></td></tr>\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Image is Not Copyrighted Material</pre></td></tr>\n";
|
||
}
|
||
break;
|
||
|
||
case 0x040D : // Global Lighting Angle
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Global lighting angle for effects layer = " . hexdec( bin2hex( $IRB_Resource['ResData'] ) ) . " degrees</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x0419 : // Global Altitude
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Global Altitude = " . hexdec( bin2hex( $IRB_Resource['ResData'] ) ) . "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x0421 : // Version Info
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Version = " . hexdec( bin2hex( substr( $IRB_Resource['ResData'], 0, 4 ) ) ) . "\n";
|
||
$output_str .= "Has Real Merged Data = " . ord( $IRB_Resource['ResData'][4] ) . "\n";
|
||
$writer_size = hexdec( bin2hex( substr( $IRB_Resource['ResData'], 5, 4 ) ) ) * 2;
|
||
|
||
$output_str .= "Writer Name = " . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], 9, $writer_size ), TRUE ) . "\n";
|
||
$reader_size = hexdec( bin2hex( substr( $IRB_Resource['ResData'], 9 + $writer_size , 4 ) ) ) * 2;
|
||
$output_str .= "Reader Name = " . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], 13 + $writer_size, $reader_size ), TRUE ) . "\n";
|
||
$output_str .= "File Version = " . hexdec( bin2hex( substr( $IRB_Resource['ResData'], 13 + $writer_size + $reader_size, 4 ) ) ) . "\n";
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x0411 : // ICC Untagged
|
||
if ( $IRB_Resource['ResData'] == "\x01" )
|
||
{
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Intentionally untagged - any assumed ICC profile handling disabled</pre></td></tr>\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>Unknown value (0x" .bin2hex( $IRB_Resource['ResData'] ). ")</pre></td></tr>\n";
|
||
}
|
||
break;
|
||
|
||
case 0x041A : // Slices
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\">";
|
||
|
||
// Unpack the first 24 bytes
|
||
$Slices_Info = unpack("NVersion/NBound_top/NBound_left/NBound_bottom/NBound_right/NStringlen", $IRB_Resource['ResData'] );
|
||
$output_str .= "Version = " . $Slices_Info['Version'] . "<br>\n";
|
||
$output_str .= "Bounding Rectangle = Top:" . $Slices_Info['Bound_top'] . ", Left:" . $Slices_Info['Bound_left'] . ", Bottom:" . $Slices_Info['Bound_bottom'] . ", Right:" . $Slices_Info['Bound_right'] . " (Pixels)<br>\n";
|
||
$Slicepos = 24;
|
||
|
||
// Extract a Unicode String
|
||
$output_str .= "Text = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], 24, $Slices_Info['Stringlen']*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $Slices_Info['Stringlen'] * 2;
|
||
|
||
// Unpack the number of Slices
|
||
$Num_Slices = hexdec( bin2hex( substr( $IRB_Resource['ResData'], $Slicepos, 4 ) ) );
|
||
$output_str .= "Number of Slices = " . $Num_Slices . "\n";
|
||
$Slicepos += 4;
|
||
|
||
// Cycle through the slices
|
||
for( $i = 1; $i <= $Num_Slices; $i++ )
|
||
{
|
||
$output_str .= "<br><br>Slice $i:<br>\n";
|
||
|
||
// Unpack the first 16 bytes of the slice
|
||
$SliceA = unpack("NID/NGroupID/NOrigin/NStringlen", substr($IRB_Resource['ResData'], $Slicepos ) );
|
||
$Slicepos += 16;
|
||
$output_str .= "ID = " . $SliceA['ID'] . "<br>\n";
|
||
$output_str .= "Group ID = " . $SliceA['GroupID'] . "<br>\n";
|
||
$output_str .= "Origin = " . $SliceA['Origin'] . "<br>\n";
|
||
|
||
// Extract a Unicode String
|
||
$output_str .= "Text = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $SliceA['Stringlen']*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $SliceA['Stringlen'] * 2;
|
||
|
||
// Unpack the next 24 bytes of the slice
|
||
$SliceB = unpack("NType/NLeftPos/NTopPos/NRightPos/NBottomPos/NURLlen", substr($IRB_Resource['ResData'], $Slicepos ) );
|
||
$Slicepos += 24;
|
||
$output_str .= "Type = " . $SliceB['Type'] . "<br>\n";
|
||
$output_str .= "Position = Top:" . $SliceB['TopPos'] . ", Left:" . $SliceB['LeftPos'] . ", Bottom:" . $SliceB['BottomPos'] . ", Right:" . $SliceB['RightPos'] . " (Pixels)<br>\n";
|
||
|
||
// Extract a Unicode String
|
||
$output_str .= "URL = <a href='" . substr( $IRB_Resource['ResData'], $Slicepos, $SliceB['URLlen']*2) . "'>" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $SliceB['URLlen']*2), TRUE ) . "</a><br>\n";
|
||
$Slicepos += $SliceB['URLlen'] * 2;
|
||
|
||
// Unpack the length of a Unicode String
|
||
$Targetlen = hexdec( bin2hex( substr( $IRB_Resource['ResData'], $Slicepos, 4 ) ) );
|
||
$Slicepos += 4;
|
||
// Extract a Unicode String
|
||
$output_str .= "Target = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $Targetlen*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $Targetlen * 2;
|
||
|
||
// Unpack the length of a Unicode String
|
||
$Messagelen = hexdec( bin2hex( substr( $IRB_Resource['ResData'], $Slicepos, 4 ) ) );
|
||
$Slicepos += 4;
|
||
// Extract a Unicode String
|
||
$output_str .= "Message = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $Messagelen*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $Messagelen * 2;
|
||
|
||
// Unpack the length of a Unicode String
|
||
$AltTaglen = hexdec( bin2hex( substr( $IRB_Resource['ResData'], $Slicepos, 4 ) ) );
|
||
$Slicepos += 4;
|
||
// Extract a Unicode String
|
||
$output_str .= "Alt Tag = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $AltTaglen*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $AltTaglen * 2;
|
||
|
||
// Unpack the HTML flag
|
||
if ( ord( $IRB_Resource['ResData']{ $Slicepos } ) === 0x01 )
|
||
{
|
||
$output_str .= "Cell Text is HTML<br>\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Cell Text is NOT HTML<br>\n";
|
||
}
|
||
$Slicepos++;
|
||
|
||
// Unpack the length of a Unicode String
|
||
$CellTextlen = hexdec( bin2hex( substr( $IRB_Resource['ResData'], $Slicepos, 4 ) ) );
|
||
$Slicepos += 4;
|
||
// Extract a Unicode String
|
||
$output_str .= "Cell Text = '" . HTML_UTF16_Escape( substr( $IRB_Resource['ResData'], $Slicepos, $CellTextlen*2), TRUE ) . "'<br>\n";
|
||
$Slicepos += $CellTextlen * 2;
|
||
|
||
|
||
// Unpack the last 12 bytes of the slice
|
||
$SliceC = unpack("NAlignH/NAlignV/CAlpha/CRed/CGreen/CBlue", substr($IRB_Resource['ResData'], $Slicepos ) );
|
||
$Slicepos += 12;
|
||
$output_str .= "Alignment = Horizontal:" . $SliceC['AlignH'] . ", Vertical:" . $SliceC['AlignV'] . "<br>\n";
|
||
$output_str .= "Alpha Colour = " . $SliceC['Alpha'] . "<br>\n";
|
||
$output_str .= "Red = " . $SliceC['Red'] . "<br>\n";
|
||
$output_str .= "Green = " . $SliceC['Green'] . "<br>\n";
|
||
$output_str .= "Blue = " . $SliceC['Blue'] . "\n";
|
||
}
|
||
|
||
$output_str .= "</td></tr>\n";
|
||
|
||
break;
|
||
|
||
|
||
case 0x0408 : // Grid and Guides information
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\">";
|
||
|
||
// Unpack the Grids info
|
||
$Grid_Info = unpack("NVersion/NGridCycleH/NGridCycleV/NGuideCount", $IRB_Resource['ResData'] );
|
||
$output_str .= "Version = " . $Grid_Info['Version'] . "<br>\n";
|
||
$output_str .= "Grid Cycle = " . $Grid_Info['GridCycleH']/32 . " Pixel(s) x " . $Grid_Info['GridCycleV']/32 . " Pixel(s)<br>\n";
|
||
$output_str .= "Number of Guides = " . $Grid_Info['GuideCount'] . "\n";
|
||
|
||
// Cycle through the Guides
|
||
for( $i = 0; $i < $Grid_Info['GuideCount']; $i++ )
|
||
{
|
||
// Unpack the info for this guide
|
||
$Guide_Info = unpack("NLocation/CDirection", substr($IRB_Resource['ResData'],16+$i*5,5) );
|
||
$output_str .= "<br>Guide $i : Location = " . $Guide_Info['Location']/32 . " Pixel(s) from edge";
|
||
if ( $Guide_Info['Direction'] === 0 )
|
||
{
|
||
$output_str .= ", Vertical\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= ", Horizontal\n";
|
||
}
|
||
}
|
||
break;
|
||
$output_str .= "</td></tr>\n";
|
||
|
||
case 0x0406 : // JPEG Quality
|
||
$Qual_Info = unpack("nQuality/nFormat/nScans/Cconst", $IRB_Resource['ResData'] );
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\">";
|
||
switch ( $Qual_Info['Quality'] )
|
||
{
|
||
case 0xFFFD:
|
||
$output_str .= "Quality 1 (Low)<br>\n";
|
||
break;
|
||
case 0xFFFE:
|
||
$output_str .= "Quality 2 (Low)<br>\n";
|
||
break;
|
||
case 0xFFFF:
|
||
$output_str .= "Quality 3 (Low)<br>\n";
|
||
break;
|
||
case 0x0000:
|
||
$output_str .= "Quality 4 (Low)<br>\n";
|
||
break;
|
||
case 0x0001:
|
||
$output_str .= "Quality 5 (Medium)<br>\n";
|
||
break;
|
||
case 0x0002:
|
||
$output_str .= "Quality 6 (Medium)<br>\n";
|
||
break;
|
||
case 0x0003:
|
||
$output_str .= "Quality 7 (Medium)<br>\n";
|
||
break;
|
||
case 0x0004:
|
||
$output_str .= "Quality 8 (High)<br>\n";
|
||
break;
|
||
case 0x0005:
|
||
$output_str .= "Quality 9 (High)<br>\n";
|
||
break;
|
||
case 0x0006:
|
||
$output_str .= "Quality 10 (Maximum)<br>\n";
|
||
break;
|
||
case 0x0007:
|
||
$output_str .= "Quality 11 (Maximum)<br>\n";
|
||
break;
|
||
case 0x0008:
|
||
$output_str .= "Quality 12 (Maximum)<br>\n";
|
||
break;
|
||
default:
|
||
$output_str .= "Unknown Quality (" . $Qual_Info['Quality'] . ")<br>\n";
|
||
break;
|
||
}
|
||
|
||
switch ( $Qual_Info['Format'] )
|
||
{
|
||
case 0x0000:
|
||
$output_str .= "Standard Format\n";
|
||
break;
|
||
case 0x0001:
|
||
$output_str .= "Optimised Format\n";
|
||
break;
|
||
case 0x0101:
|
||
$output_str .= "Progressive Format<br>\n";
|
||
break;
|
||
default:
|
||
$output_str .= "Unknown Format (" . $Qual_Info['Format'] .")\n";
|
||
break;
|
||
}
|
||
if ( $Qual_Info['Format'] == 0x0101 )
|
||
{
|
||
switch ( $Qual_Info['Scans'] )
|
||
{
|
||
case 0x0001:
|
||
$output_str .= "3 Scans\n";
|
||
break;
|
||
case 0x0002:
|
||
$output_str .= "4 Scans\n";
|
||
break;
|
||
case 0x0003:
|
||
$output_str .= "5 Scans\n";
|
||
break;
|
||
default:
|
||
$output_str .= "Unknown number of scans (" . $Qual_Info['Scans'] .")\n";
|
||
break;
|
||
}
|
||
}
|
||
$output_str .= "</td></tr>\n";
|
||
break;
|
||
|
||
case 0x0409 : // Thumbnail Resource
|
||
case 0x040C : // Thumbnail Resource
|
||
$thumb_data = unpack("NFormat/NWidth/NHeight/NWidthBytes/NSize/NCompressedSize/nBitsPixel/nPlanes", $IRB_Resource['ResData'] );
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Format = " . (( $thumb_data['Format'] == 1 ) ? "JPEG RGB\n" : "Raw RGB\n");
|
||
$output_str .= "Width = " . $thumb_data['Width'] . "\n";
|
||
$output_str .= "Height = " . $thumb_data['Height'] . "\n";
|
||
$output_str .= "Padded Row Bytes = " . $thumb_data['WidthBytes'] . " bytes\n";
|
||
$output_str .= "Total Size = " . $thumb_data['Size'] . " bytes\n";
|
||
$output_str .= "Compressed Size = " . $thumb_data['CompressedSize'] . " bytes\n";
|
||
$output_str .= "Bits per Pixel = " . $thumb_data['BitsPixel'] . " bits\n";
|
||
$output_str .= "Number of planes = " . $thumb_data['Planes'] . " bytes\n";
|
||
|
||
// Change: as of version 1.11 - Changed to make thumbnail link portable across directories
|
||
// Build the path of the thumbnail script and its filename parameter to put in a url
|
||
$link_str = get_relative_path( dirname(__FILE__) . "/get_ps_thumb.php" , getcwd ( ) );
|
||
$link_str .= "?filename=";
|
||
$link_str .= get_relative_path( $filename, dirname(__FILE__) );
|
||
|
||
// Add thumbnail link to html
|
||
$output_str .= "Thumbnail Data:</pre><a class=\"Photoshop_Thumbnail_Link\" href=\"$link_str\"><img class=\"Photoshop_Thumbnail_Link\" src=\"$link_str\"></a>\n";
|
||
|
||
$output_str .= "</td></tr>\n";
|
||
break;
|
||
|
||
case 0x0414 : // Document Specific ID's
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>" . hexdec( bin2hex( $IRB_Resource['ResData'] ) ) . "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x041E : // URL List
|
||
$URL_count = hexdec( bin2hex( substr( $IRB_Resource['ResData'], 0, 4 ) ) );
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\">\n";
|
||
$output_str .= "$URL_count URL's in list<br>\n";
|
||
$urlstr = substr( $IRB_Resource['ResData'], 4 );
|
||
// TODO: Check if URL List in Photoshop IRB works
|
||
for( $i = 0; $i < $URL_count; $i++ )
|
||
{
|
||
$url_data = unpack( "NLong/NID/NURLSize", $urlstr );
|
||
$output_str .= "URL $i info: long = " . $url_data['Long'] .", ";
|
||
$output_str .= "ID = " . $url_data['ID'] . ", ";
|
||
$urlstr = substr( $urlstr, 12 );
|
||
$url = substr( $urlstr, 0, $url_data['URLSize'] );
|
||
$output_str .= "URL = <a href=\"" . xml_UTF16_clean( $url, TRUE ) . "\">" . HTML_UTF16_Escape( $url, TRUE ) . "</a><br>\n";
|
||
}
|
||
$output_str .= "</td></tr>\n";
|
||
break;
|
||
case 0x03F4 : // Grayscale and multichannel halftoning information.
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= Interpret_Halftone( $IRB_Resource['ResData'] );
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
case 0x03F5 : // Color halftoning information
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Cyan Halftoning Info:\n" . Interpret_Halftone( substr( $IRB_Resource['ResData'], 0, 18 ) ) . "\n\n";
|
||
$output_str .= "Magenta Halftoning Info:\n" . Interpret_Halftone( substr( $IRB_Resource['ResData'], 18, 18 ) ) . "\n\n";
|
||
$output_str .= "Yellow Halftoning Info:\n" . Interpret_Halftone( substr( $IRB_Resource['ResData'], 36, 18 ) ) . "\n";
|
||
$output_str .= "Black Halftoning Info:\n" . Interpret_Halftone( substr( $IRB_Resource['ResData'], 54, 18 ) ) . "\n";
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x03F7 : // Grayscale and multichannel transfer function.
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= Interpret_Transfer_Function( substr( $IRB_Resource['ResData'], 0, 28 ) ) ;
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x03F8 : // Color transfer functions
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Red Transfer Function: \n" . Interpret_Transfer_Function( substr( $IRB_Resource['ResData'], 0, 28 ) ) . "\n\n";
|
||
$output_str .= "Green Transfer Function: \n" . Interpret_Transfer_Function( substr( $IRB_Resource['ResData'], 28, 28 ) ) . "\n\n";
|
||
$output_str .= "Blue Transfer Function: \n" . Interpret_Transfer_Function( substr( $IRB_Resource['ResData'], 56, 28 ) ) . "\n";
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x03F3 : // Print Flags
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
if ( $IRB_Resource['ResData'][0] == "\x01" )
|
||
{
|
||
$output_str .= "Labels Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Labels Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][1] == "\x01" )
|
||
{
|
||
$output_str .= "Crop Marks Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Crop Marks Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][2] == "\x01" )
|
||
{
|
||
$output_str .= "Color Bars Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Color Bars Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][3] == "\x01" )
|
||
{
|
||
$output_str .= "Registration Marks Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Registration Marks Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][4] == "\x01" )
|
||
{
|
||
$output_str .= "Negative Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Negative Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][5] == "\x01" )
|
||
{
|
||
$output_str .= "Flip Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Flip Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][6] == "\x01" )
|
||
{
|
||
$output_str .= "Interpolate Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Interpolate Not Selected\n";
|
||
}
|
||
if ( $IRB_Resource['ResData'][7] == "\x01" )
|
||
{
|
||
$output_str .= "Caption Selected";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Caption Not Selected";
|
||
}
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x2710 : // Print Flags Information
|
||
$PrintFlags = unpack( "nVersion/CCentCrop/Cjunk/NBleedWidth/nBleedWidthScale", $IRB_Resource['ResData'] );
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Version = " . $PrintFlags['Version'] . "\n";
|
||
$output_str .= "Centre Crop Marks = " . $PrintFlags['CentCrop'] . "\n";
|
||
$output_str .= "Bleed Width = " . $PrintFlags['BleedWidth'] . "\n";
|
||
$output_str .= "Bleed Width Scale = " . $PrintFlags['BleedWidthScale'];
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
case 0x03ED : // Resolution Info
|
||
$ResInfo = unpack( "nhRes_int/nhResdec/nhResUnit/nwidthUnit/nvRes_int/nvResdec/nvResUnit/nheightUnit", $IRB_Resource['ResData'] );
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\"><pre>\n";
|
||
$output_str .= "Horizontal Resolution = " . ($ResInfo['hRes_int'] + $ResInfo['hResdec']/65536) . " pixels per Inch\n";
|
||
$output_str .= "Vertical Resolution = " . ($ResInfo['vRes_int'] + $ResInfo['vResdec']/65536) . " pixels per Inch\n";
|
||
if ( $ResInfo['hResUnit'] == 1 )
|
||
{
|
||
$output_str .= "Display units for Horizontal Resolution = Pixels per Inch\n";
|
||
}
|
||
elseif ( $ResInfo['hResUnit'] == 2 )
|
||
{
|
||
$output_str .= "Display units for Horizontal Resolution = Pixels per Centimetre\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Display units for Horizontal Resolution = Unknown Value (". $ResInfo['hResUnit'] .")\n";
|
||
}
|
||
|
||
if ( $ResInfo['vResUnit'] == 1 )
|
||
{
|
||
$output_str .= "Display units for Vertical Resolution = Pixels per Inch\n";
|
||
}
|
||
elseif ( $ResInfo['vResUnit'] == 2 )
|
||
{
|
||
$output_str .= "Display units for Vertical Resolution = Pixels per Centimetre\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Display units for Vertical Resolution = Unknown Value (". $ResInfo['vResUnit'] .")\n";
|
||
}
|
||
|
||
if ( $ResInfo['widthUnit'] == 1 )
|
||
{
|
||
$output_str .= "Display units for Image Width = Inches\n";
|
||
}
|
||
elseif ( $ResInfo['widthUnit'] == 2 )
|
||
{
|
||
$output_str .= "Display units for Image Width = Centimetres\n";
|
||
}
|
||
elseif ( $ResInfo['widthUnit'] == 3 )
|
||
{
|
||
$output_str .= "Display units for Image Width = Points\n";
|
||
}
|
||
elseif ( $ResInfo['widthUnit'] == 4 )
|
||
{
|
||
$output_str .= "Display units for Image Width = Picas\n";
|
||
}
|
||
elseif ( $ResInfo['widthUnit'] == 5 )
|
||
{
|
||
$output_str .= "Display units for Image Width = Columns\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Display units for Image Width = Unknown Value (". $ResInfo['widthUnit'] .")\n";
|
||
}
|
||
|
||
if ( $ResInfo['heightUnit'] == 1 )
|
||
{
|
||
$output_str .= "Display units for Image Height = Inches";
|
||
}
|
||
elseif ( $ResInfo['heightUnit'] == 2 )
|
||
{
|
||
$output_str .= "Display units for Image Height = Centimetres";
|
||
}
|
||
elseif ( $ResInfo['heightUnit'] == 3 )
|
||
{
|
||
$output_str .= "Display units for Image Height = Points";
|
||
}
|
||
elseif ( $ResInfo['heightUnit'] == 4 )
|
||
{
|
||
$output_str .= "Display units for Image Height = Picas";
|
||
}
|
||
elseif ( $ResInfo['heightUnit'] == 5 )
|
||
{
|
||
$output_str .= "Display units for Image Height = Columns";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Display units for Image Height = Unknown Value (". $ResInfo['heightUnit'] .")";
|
||
}
|
||
$output_str .= "</pre></td></tr>\n";
|
||
break;
|
||
|
||
default : // All other records
|
||
$output_str .= "<tr class=\"Photoshop_Table_Row\"><td class=\"Photoshop_Caption_Cell\">$Resource_Name</td><td class=\"Photoshop_Value_Cell\">RESOURCE DECODING NOT IMPLEMENTED YET<BR>" . strlen( $IRB_Resource['ResData'] ) . " bytes</td></tr>\n";
|
||
|
||
}
|
||
|
||
}
|
||
|
||
// Add the table end to the HTML
|
||
$output_str .= "</table>\n";
|
||
|
||
// Add any secondary output to the HTML
|
||
$output_str .= $secondary_output_str;
|
||
|
||
}
|
||
|
||
// Return the HTML
|
||
return $output_str;
|
||
}
|
||
|
||
/******************************************************************************
|
||
* End of Function: Interpret_IRB_to_HTML
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
*
|
||
* INTERNAL FUNCTIONS
|
||
*
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
*
|
||
* Function: unpack_Photoshop_IRB_Data
|
||
*
|
||
* Description: Extracts Photoshop Information Resource Block (IRB) information
|
||
* from a binary string containing the IRB, as read from a file
|
||
*
|
||
* Parameters: IRB_Data - The binary string containing the IRB
|
||
*
|
||
* Returns: IRBdata - The array of Photoshop IRB records
|
||
*
|
||
******************************************************************************/
|
||
|
||
function unpack_Photoshop_IRB_Data( $IRB_Data )
|
||
{
|
||
$pos = 0;
|
||
|
||
// Cycle through the IRB and extract its records - Records are started with 8BIM, so cycle until no more instances of 8BIM can be found
|
||
while ( ( $pos < strlen( $IRB_Data ) ) && ( ($pos = strpos( $IRB_Data, "8BIM", $pos) ) !== FALSE ) )
|
||
{
|
||
// Skip the position over the 8BIM characters
|
||
$pos += 4;
|
||
|
||
// Next two characters are the record ID - denoting what type of record it is.
|
||
$ID = ord( $IRB_Data{ $pos } ) * 256 + ord( $IRB_Data{ $pos +1 } );
|
||
|
||
// Skip the positionover the two record ID characters
|
||
$pos += 2;
|
||
|
||
// Next comes a Record Name - usually not used, but it should be a null terminated string, padded with 0x00 to be an even length
|
||
$namestartpos = $pos;
|
||
|
||
// Change: Fixed processing of embedded resource names, as of revision 1.10
|
||
|
||
// NOTE: Photoshop does not process resource names according to the standard :
|
||
// "Adobe Photoshop 6.0 File Formats Specification, Version 6.0, Release 2, November 2000"
|
||
//
|
||
// The resource name is actually formatted as follows:
|
||
// One byte name length, followed by the null terminated ascii name string.
|
||
// The field is then padded with a Null character if required, to ensure that the
|
||
// total length of the name length and name is even.
|
||
|
||
// Name - process it
|
||
// Get the length
|
||
$namelen = ord ( $IRB_Data{ $namestartpos } );
|
||
|
||
// Total length of name and length info must be even, hence name length must be odd
|
||
// Check if the name length is even,
|
||
if ( $namelen % 2 == 0 )
|
||
{
|
||
// add one to length to make it odd
|
||
$namelen ++;
|
||
}
|
||
// Extract the name
|
||
$resembeddedname = trim( substr ( $IRB_Data, $namestartpos+1, $namelen) );
|
||
$pos += $namelen + 1;
|
||
|
||
|
||
// Next is a four byte size field indicating the size in bytes of the record's data - MSB first
|
||
$datasize = ord( $IRB_Data{ $pos } ) * 16777216 + ord( $IRB_Data{ $pos + 1 } ) * 65536 +
|
||
ord( $IRB_Data{ $pos + 2 } ) * 256 + ord( $IRB_Data{ $pos + 3 } );
|
||
$pos += 4;
|
||
|
||
// The record is stored padded with 0x00 characters to make the size even, so we need to calculate the stored size
|
||
$storedsize = $datasize + ($datasize % 2);
|
||
|
||
$resdata = substr ( $IRB_Data, $pos, $datasize );
|
||
|
||
// Get the description for this resource
|
||
// Check if this is a Path information Resource, since they have a range of ID's
|
||
if ( ( $ID >= 0x07D0 ) && ( $ID <= 0x0BB6 ) )
|
||
{
|
||
$ResDesc = "ID Info : Path Information (saved paths).";
|
||
}
|
||
else
|
||
{
|
||
if ( array_key_exists( $ID, $GLOBALS[ "Photoshop_ID_Descriptions" ] ) )
|
||
{
|
||
$ResDesc = $GLOBALS[ "Photoshop_ID_Descriptions" ][ $ID ];
|
||
}
|
||
else
|
||
{
|
||
$ResDesc = "";
|
||
}
|
||
}
|
||
|
||
// Get the Name of the Resource
|
||
if ( array_key_exists( $ID, $GLOBALS[ "Photoshop_ID_Names" ] ) )
|
||
{
|
||
$ResName = $GLOBALS['Photoshop_ID_Names'][ $ID ];
|
||
}
|
||
else
|
||
{
|
||
$ResName = "";
|
||
}
|
||
|
||
|
||
// Store the Resource in the array to be returned
|
||
|
||
$IRB_Array[] = array( "ResID" => $ID,
|
||
"ResName" => $ResName,
|
||
"ResDesc" => $ResDesc,
|
||
"ResEmbeddedName" => $resembeddedname,
|
||
"ResData" => $resdata );
|
||
|
||
// Jump over the data to the next record
|
||
$pos += $storedsize;
|
||
}
|
||
|
||
// Return the array created
|
||
return $IRB_Array;
|
||
}
|
||
|
||
/******************************************************************************
|
||
* End of Function: unpack_Photoshop_IRB_Data
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
*
|
||
* Function: pack_Photoshop_IRB_Data
|
||
*
|
||
* Description: Packs a Photoshop Information Resource Block (IRB) array into it's
|
||
* binary form, which can be written to a file
|
||
*
|
||
* Parameters: IRB_data - an Photoshop IRB array to be converted. Should be in
|
||
* the same format as received from get_Photoshop_IRB
|
||
*
|
||
* Returns: packed_IRB_data - the binary string of packed IRB data
|
||
*
|
||
******************************************************************************/
|
||
|
||
function pack_Photoshop_IRB_Data( $IRB_data )
|
||
{
|
||
$packed_IRB_data = "";
|
||
|
||
// Cycle through each resource in the IRB,
|
||
foreach ($IRB_data as $resource)
|
||
{
|
||
|
||
// Change: Fix to avoid creating blank resources, as of revision 1.10
|
||
|
||
// Check if there is actually any data for this resource
|
||
if( strlen( $resource['ResData'] ) == 0 )
|
||
{
|
||
// No data for resource - skip it
|
||
continue;
|
||
}
|
||
|
||
// Append the 8BIM tag, and resource ID to the packed output data
|
||
$packed_IRB_data .= pack("a4n", "8BIM", $resource['ResID'] );
|
||
|
||
|
||
// Change: Fixed processing of embedded resource names, as of revision 1.10
|
||
|
||
// NOTE: Photoshop does not process resource names according to the standard :
|
||
// "Adobe Photoshop 6.0 File Formats Specification, Version 6.0, Release 2, November 2000"
|
||
//
|
||
// The resource name is actually formatted as follows:
|
||
// One byte name length, followed by the null terminated ascii name string.
|
||
// The field is then padded with a Null character if required, to ensure that the
|
||
// total length of the name length and name is even.
|
||
|
||
// Append Name Size
|
||
$packed_IRB_data .= pack( "c", strlen(trim($resource['ResEmbeddedName'])));
|
||
|
||
// Append the Resource Name to the packed output data
|
||
$packed_IRB_data .= trim($resource['ResEmbeddedName']);
|
||
|
||
// If the resource name is even length, then with the addition of
|
||
// the size it becomes odd and needs to be padded to an even number
|
||
if ( strlen( trim($resource['ResEmbeddedName']) ) % 2 == 0 )
|
||
{
|
||
// then it needs to be evened up by appending another null
|
||
$packed_IRB_data .= "\x00";
|
||
}
|
||
|
||
// Append the resource data size to the packed output data
|
||
$packed_IRB_data .= pack("N", strlen( $resource['ResData'] ) );
|
||
|
||
// Append the resource data to the packed output data
|
||
$packed_IRB_data .= $resource['ResData'];
|
||
|
||
// If the resource data is odd length,
|
||
if ( strlen( $resource['ResData'] ) % 2 == 1 )
|
||
{
|
||
// then it needs to be evened up by appending another null
|
||
$packed_IRB_data .= "\x00";
|
||
}
|
||
}
|
||
|
||
// Return the packed data string
|
||
return $packed_IRB_data;
|
||
}
|
||
|
||
/******************************************************************************
|
||
* End of Function: pack_Photoshop_IRB_Data
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
*
|
||
* Internal Function: Interpret_Transfer_Function
|
||
*
|
||
* Description: Used by Interpret_IRB_to_HTML to interpret Color transfer functions
|
||
* for Photoshop IRB resource 0x03F8. Converts the transfer function
|
||
* information to a human readable version.
|
||
*
|
||
* Parameters: Transfer_Function_Binary - a 28 byte Ink curves structure string
|
||
*
|
||
* Returns: output_str - the text string containing the transfer function
|
||
* information
|
||
*
|
||
******************************************************************************/
|
||
|
||
function Interpret_Transfer_Function( $Transfer_Function_Binary )
|
||
{
|
||
// Unpack the Transfer function information
|
||
$Trans_vals = unpack ( "n13Curve/nOverride", $Transfer_Function_Binary );
|
||
|
||
$output_str = "Transfer Function Points: ";
|
||
|
||
// Cycle through each of the Transfer function array values
|
||
foreach ( $Trans_vals as $Key => $val )
|
||
{
|
||
// Check if the value should be negative
|
||
if ($val > 32768 )
|
||
{
|
||
// Value should be negative - make it so
|
||
$val = $val - 65536;
|
||
}
|
||
// Check that the Override item is not getting in this list, and
|
||
// that the value is not -1, which means ignored
|
||
if ( ( $Key != "Override" ) && ( $val != -1 ) )
|
||
{
|
||
// This is a valid transfer function point, output it
|
||
$output_str .= $val/10 . "%, ";
|
||
}
|
||
}
|
||
|
||
// Output the override info
|
||
if ( $Trans_vals['Override'] == 0 )
|
||
{
|
||
$output_str .= "\nOverride: Let printer supply curve";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "\nOverride: Override printer<65>s default transfer curve";
|
||
}
|
||
|
||
// Return the result
|
||
return $output_str;
|
||
}
|
||
|
||
/******************************************************************************
|
||
* End of Function: Interpret_Transfer_Function
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
*
|
||
* Internal Function: Interpret_Halftone
|
||
*
|
||
* Description: Used by Interpret_IRB_to_HTML to interpret Color halftoning information
|
||
* for Photoshop IRB resource 0x03F5. Converts the halftoning info
|
||
* to a human readable version.
|
||
*
|
||
* Parameters: Transfer_Function_Binary - a 18 byte Halftone screen parameter
|
||
& structure string
|
||
*
|
||
* Returns: output_str - the text string containing the transfer function
|
||
* information
|
||
*
|
||
******************************************************************************/
|
||
|
||
function Interpret_Halftone( $Halftone_Binary )
|
||
{
|
||
// Create a string to receive the output
|
||
$output_str = "";
|
||
|
||
// Unpack the binary data into an array
|
||
$HalftoneInfo = unpack( "nFreqVal_int/nFreqVal_dec/nFreqScale/nAngle_int/nAngle_dec/nShapeCode/NMisc/CAccurate/CDefault", $Halftone_Binary );
|
||
|
||
// Interpret Ink Screen Frequency
|
||
$output_str .= "Ink Screen Frequency = " . ($HalftoneInfo['FreqVal_int'] + $HalftoneInfo['FreqVal_dec']/65536) . " lines per Inch\n";
|
||
if ( $HalftoneInfo['FreqScale'] == 1 )
|
||
{
|
||
$output_str .= "Display units for Ink Screen Frequency = Inches\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Display units for Ink Screen Frequency = Centimetres\n";
|
||
}
|
||
|
||
// Interpret Angle for screen
|
||
$output_str .= "Angle for screen = " . ($HalftoneInfo['Angle_int'] + $HalftoneInfo['Angle_dec']/65536) . " degrees\n";
|
||
|
||
// Interpret Shape of Halftone Dots
|
||
if ($HalftoneInfo['ShapeCode'] > 32768 )
|
||
{
|
||
$HalftoneInfo['ShapeCode'] = $HalftoneInfo['ShapeCode'] - 65536;
|
||
}
|
||
if ( $HalftoneInfo['ShapeCode'] == 0 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Round\n";
|
||
}
|
||
elseif ( $HalftoneInfo['ShapeCode'] == 1 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Ellipse\n";
|
||
}
|
||
elseif ( $HalftoneInfo['ShapeCode'] == 2 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Line\n";
|
||
}
|
||
elseif ( $HalftoneInfo['ShapeCode'] == 3 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Square\n";
|
||
}
|
||
elseif ( $HalftoneInfo['ShapeCode'] == 4 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Cross\n";
|
||
}
|
||
elseif ( $HalftoneInfo['ShapeCode'] == 6 )
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Diamond\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Shape of Halftone Dots = Unknown shape (" . $HalftoneInfo['ShapeCode'] . ")\n";
|
||
}
|
||
|
||
// Interpret Accurate Screens
|
||
if ( $HalftoneInfo['Accurate'] == 1 )
|
||
{
|
||
$output_str .= "Use Accurate Screens Selected\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Use Other (not Accurate) Screens Selected\n";
|
||
}
|
||
|
||
// Interpret Printer Default Screens
|
||
if ( $HalftoneInfo['Default'] == 1 )
|
||
{
|
||
$output_str .= "Use printer<65>s default screens\n";
|
||
}
|
||
else
|
||
{
|
||
$output_str .= "Use Other (not Printer Default) Screens Selected\n";
|
||
}
|
||
|
||
// Return Text
|
||
return $output_str;
|
||
|
||
}
|
||
|
||
/******************************************************************************
|
||
* End of Global Variable: Interpret_Halftone
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
* Global Variable: Photoshop_ID_Names
|
||
*
|
||
* Contents: The Names of the Photoshop IRB resources, indexed by their
|
||
* resource number
|
||
*
|
||
******************************************************************************/
|
||
|
||
$GLOBALS[ "Photoshop_ID_Names" ] = array(
|
||
0x03E8 => "Number of channels, rows, columns, depth, and mode. (Obsolete)",
|
||
0x03E9 => "Macintosh print manager info ",
|
||
0x03EB => "Indexed color table (Obsolete)",
|
||
0x03ED => "Resolution Info",
|
||
0x03EE => "Alpha Channel Names",
|
||
0x03EF => "Display Info",
|
||
0x03F0 => "Caption String",
|
||
0x03F1 => "Border information",
|
||
0x03F2 => "Background color",
|
||
0x03F3 => "Print flags",
|
||
0x03F4 => "Grayscale and multichannel halftoning information",
|
||
0x03F5 => "Color halftoning information",
|
||
0x03F6 => "Duotone halftoning information",
|
||
0x03F7 => "Grayscale and multichannel transfer function",
|
||
0x03F8 => "Color transfer functions",
|
||
0x03F9 => "Duotone transfer functions",
|
||
0x03FA => "Duotone image information",
|
||
0x03FB => "Black and white values",
|
||
0x03FC => "Obsolete Resource.",
|
||
0x03FD => "EPS options",
|
||
0x03FE => "Quick Mask information",
|
||
0x03FF => "Obsolete Resource",
|
||
0x0400 => "Layer state information",
|
||
0x0401 => "Working path (not saved)",
|
||
0x0402 => "Layers group information",
|
||
0x0403 => "Obsolete Resource",
|
||
0x0404 => "IPTC-NAA record",
|
||
0x0405 => "Raw Format Image mode",
|
||
0x0406 => "JPEG quality",
|
||
0x0408 => "Grid and guides information",
|
||
0x0409 => "Thumbnail resource",
|
||
0x040A => "Copyright flag",
|
||
0x040B => "URL",
|
||
0x040C => "Thumbnail resource",
|
||
0x040D => "Global Angle",
|
||
0x040E => "Color samplers resource",
|
||
0x040F => "ICC Profile",
|
||
0x0410 => "Watermark",
|
||
0x0411 => "ICC Untagged",
|
||
0x0412 => "Effects visible",
|
||
0x0413 => "Spot Halftone",
|
||
0x0414 => "Document Specific IDs",
|
||
0x0415 => "Unicode Alpha Names",
|
||
0x0416 => "Indexed Color Table Count",
|
||
0x0417 => "Tansparent Index. Index of transparent color, if any.",
|
||
0x0419 => "Global Altitude",
|
||
0x041A => "Slices",
|
||
0x041B => "Workflow URL",
|
||
0x041C => "Jump To XPEP",
|
||
0x041D => "Alpha Identifiers",
|
||
0x041E => "URL List",
|
||
0x0421 => "Version Info",
|
||
0x0BB7 => "Name of clipping path.",
|
||
0x2710 => "Print flags information"
|
||
);
|
||
|
||
/******************************************************************************
|
||
* End of Global Variable: Photoshop_ID_Names
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
/******************************************************************************
|
||
* Global Variable: Photoshop_ID_Descriptions
|
||
*
|
||
* Contents: The Descriptions of the Photoshop IRB resources, indexed by their
|
||
* resource number
|
||
*
|
||
******************************************************************************/
|
||
|
||
$GLOBALS[ "Photoshop_ID_Descriptions" ] = array(
|
||
0x03E8 => "Obsolete<EFBFBD>Photoshop 2.0 only. number of channels, rows, columns, depth, and mode.",
|
||
0x03E9 => "Optional. Macintosh print manager print info record.",
|
||
0x03EB => "Obsolete<EFBFBD>Photoshop 2.0 only. Contains the indexed color table.",
|
||
0x03ED => "ResolutionInfo structure. See Appendix A in Photoshop SDK Guide.pdf",
|
||
0x03EE => "Names of the alpha channels as a series of Pascal strings.",
|
||
0x03EF => "DisplayInfo structure. See Appendix A in Photoshop SDK Guide.pdf",
|
||
0x03F0 => "Optional. The caption as a Pascal string.",
|
||
0x03F1 => "Border information. border width, border units",
|
||
0x03F2 => "Background color.",
|
||
0x03F3 => "Print flags. labels, crop marks, color bars, registration marks, negative, flip, interpolate, caption.",
|
||
0x03F4 => "Grayscale and multichannel halftoning information.",
|
||
0x03F5 => "Color halftoning information.",
|
||
0x03F6 => "Duotone halftoning information.",
|
||
0x03F7 => "Grayscale and multichannel transfer function.",
|
||
0x03F8 => "Color transfer functions.",
|
||
0x03F9 => "Duotone transfer functions.",
|
||
0x03FA => "Duotone image information.",
|
||
0x03FB => "Effective black and white values for the dot range.",
|
||
0x03FC => "Obsolete Resource.",
|
||
0x03FD => "EPS options.",
|
||
0x03FE => "Quick Mask information. Quick Mask channel ID, Mask initially empty.",
|
||
0x03FF => "Obsolete Resource.",
|
||
0x0400 => "Layer state information. Index of target layer.",
|
||
0x0401 => "Working path (not saved).",
|
||
0x0402 => "Layers group information. Group ID for the dragging groups. Layers in a group have the same group ID.",
|
||
0x0403 => "Obsolete Resource.",
|
||
0x0404 => "IPTC-NAA record. This contains the File Info... information. See the IIMV4.pdf document.",
|
||
0x0405 => "Image mode for raw format files.",
|
||
0x0406 => "JPEG quality. Private.",
|
||
0x0408 => "Grid and guides information.",
|
||
0x0409 => "Thumbnail resource.",
|
||
0x040A => "Copyright flag. Boolean indicating whether image is copyrighted. Can be set via Property suite or by user in File Info...",
|
||
0x040B => "URL. Handle of a text string with uniform resource locator. Can be set via Property suite or by user in File Info...",
|
||
0x040C => "Thumbnail resource.",
|
||
0x040D => "Global Angle. Global lighting angle for effects layer.",
|
||
0x040E => "Color samplers resource.",
|
||
0x040F => "ICC Profile. The raw bytes of an ICC format profile, see the ICC34.pdf and ICC34.h files from the Internation Color Consortium.",
|
||
0x0410 => "Watermark.",
|
||
0x0411 => "ICC Untagged. Disables any assumed profile handling when opening the file. 1 = intentionally untagged.",
|
||
0x0412 => "Effects visible. Show/hide all the effects layer.",
|
||
0x0413 => "Spot Halftone. Version, length, variable length data.",
|
||
0x0414 => "Document specific IDs for layer identification",
|
||
0x0415 => "Unicode Alpha Names. Length and the string",
|
||
0x0416 => "Indexed Color Table Count. Number of colors in table that are actually defined",
|
||
0x0417 => "Transparent Index. Index of transparent color, if any.",
|
||
0x0419 => "Global Altitude.",
|
||
0x041A => "Slices.",
|
||
0x041B => "Workflow URL. Length, string.",
|
||
0x041C => "Jump To XPEP. Major version, Minor version, Count. Table which can include: Dirty flag, Mod date.",
|
||
0x041D => "Alpha Identifiers.",
|
||
0x041E => "URL List. Count of URLs, IDs, and strings",
|
||
0x0421 => "Version Info. Version, HasRealMergedData, string of writer name, string of reader name, file version.",
|
||
0x0BB7 => "Name of clipping path.",
|
||
0x2710 => "Print flags information. Version, Center crop marks, Bleed width value, Bleed width scale."
|
||
);
|
||
|
||
/******************************************************************************
|
||
* End of Global Variable: Photoshop_ID_Descriptions
|
||
******************************************************************************/
|
||
|
||
|
||
|
||
|
||
|
||
|
||
?>
|