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-<?php
-
-/******************************************************************************
-*
-* Filename: olympus.php
-*
-* Description: Olympus Makernote Parser
-* Provides functions to decode an Olympus EXIF makernote and to interpret
-* the resulting array into html.
-*
-* Olympus Makernote Format:
-*
-* Field Size Description
-* ----------------------------------------------------------------
-* Header 7 Bytes "OLYMP\x00\x01" or "OLYMP\x00\x02"
-* Unknown 1 Bytes Unknown
-* IFD Data Variable Standard IFD Data using Olympus Tags
-* ----------------------------------------------------------------
-*
-*
-* Author: Evan Hunter
-*
-* Date: 30/7/2004
-*
-* Project: JPEG Metadata
-*
-* Revision: 1.11
-*
-* Changes: 1.00 -> 1.11 : changed get_Olympus_Makernote_Html to allow thumbnail links to work when
-* toolkit is portable across directories
-*
-* URL: http://electronics.ozhiker.com
-*
-* Copyright: Copyright Evan Hunter 2004
-* This file may be used freely for non-commercial purposes.For
-* commercial uses please contact the author: evan@ozhiker.com
-*
-******************************************************************************/
-
-
-
-// Add the parser and interpreter functions to the list of Makernote parsers and interpreters.
-
-$GLOBALS['Makernote_Function_Array']['Read_Makernote_Tag'][] = "get_Olympus_Makernote";
-$GLOBALS['Makernote_Function_Array']['get_Makernote_Text_Value'][] = "get_Olympus_Text_Value";
-$GLOBALS['Makernote_Function_Array']['Interpret_Makernote_to_HTML'][] = "get_Olympus_Makernote_Html";
-
-
-
-
-include_once dirname(__FILE__) .'/../pjmt_utils.php'; // Change: as of version 1.11 - added to allow directory portability
-
-
-
-
-/******************************************************************************
-*
-* Function: get_Olympus_Makernote
-*
-* Description: Decodes the Makernote tag and returns the new tag with the decoded
-* information attached. Returns false if this is not a makernote
-* that can be processed with this script
-*
-* Parameters: Makernote_Tag - the element of an EXIF array containing the
-* makernote, as returned from get_EXIF_JPEG
-* EXIF_Array - the entire EXIF array containing the
-* makernote, as returned from get_EXIF_JPEG, in
-* case more information is required for decoding
-* filehnd - an open file handle for the file containing the
-* makernote - does not have to be positioned at the
-* start of the makernote
-* Make_Field - The contents of the EXIF Make field, to aid
-* determining whether this script can decode
-* the makernote
-*
-*
-* Returns: Makernote_Tag - the Makernote_Tag from the parameters, but
-* modified to contain the decoded information
-* FALSE - If this script could not decode the makernote, or if
-* an error occured in decoding
-*
-******************************************************************************/
-
-function get_Olympus_Makernote( $Makernote_Tag, $EXIF_Array, $filehnd, $Make_Field )
-{
-
- // Check if the Make Field contains the word Olympus
- if ( stristr( $Make_Field, "Olympus" ) === FALSE )
- {
- return FALSE;
- }
-
- // Check if the header exists at the start of the Makernote
- if ( ( substr( $Makernote_Tag['Data'], 0, 7 ) != "OLYMP\x00\x01" ) &&
- ( substr( $Makernote_Tag['Data'], 0, 7 ) != "OLYMP\x00\x02" ) )
- {
- // This isn't a Olympus Makernote, abort
- return FALSE ;
- }
-
-
-
- // Seek to the start of the IFD
- fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + 8 );
-
- // Read the IFD(s) into an array
- $Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'], $Makernote_Tag['ByteAlign'], "Olympus" );
-
- // Save some information into the Tag element to aid interpretation
- $Makernote_Tag['Decoded'] = TRUE;
- $Makernote_Tag['Makernote Type'] = "Olympus";
- $Makernote_Tag['Makernote Tags'] = "Olympus";
-
-
- // Return the new tag
- return $Makernote_Tag;
-}
-
-/******************************************************************************
-* End of Function: get_Olympus_Makernote
-******************************************************************************/
-
-
-
-
-
-
-
-/******************************************************************************
-*
-* Function: get_Olympus_Text_Value
-*
-* Description: Provides a text value for any tag marked as special for makernotes
-* that this script can decode. Returns false if this is not a makernote
-* that can be processed with this script
-*
-* Parameters: Exif_Tag - the element of an the Makernote array containing the
-* tag in question, as returned from get_Olympus_Makernote
-* Tag_Definitions_Name - The name of the Tag Definitions group
-* within the global array IFD_Tag_Definitions
-*
-*
-* Returns: output - the text value for the tag
-* FALSE - If this script could not decode the makernote, or if
-* an error occured in decoding
-*
-******************************************************************************/
-
-function get_Olympus_Text_Value( $Exif_Tag, $Tag_Definitions_Name )
-{
- // Check that this tag uses the Olympus tags, otherwise it can't be decoded here
- if ( $Tag_Definitions_Name !== "Olympus" )
- {
- // Not an Olympus tag - can't decode it
- return FALSE;
- }
-
-
- // Process the tag acording to it's tag number, to produce a text value
- if ( $Exif_Tag['Tag Number'] == 0x200 )
- {
- // Special Mode Tag
-
- // Add info from the first value to the output string
- switch ( $Exif_Tag['Data'][0] )
- {
- case 0: $outputstr = "Normal\n";
- break;
- case 2: $outputstr = "Fast\n";
- break;
- case 3: $outputstr = "Panorama\n";
- break;
- default: $outputstr = "Unknown Mode ( " . $Exif_Tag['Data'][0] . " )\n";
- break;
- }
-
- // Add info from the second value to the output string
- $outputstr .= "Sequence Number: " . $Exif_Tag['Data'][1] . "\n";
-
- // Add info from the third value to the output string
- switch ( $Exif_Tag['Data'][2] )
- {
- case 0: // Do nothing
- break;
- case 1: $outputstr .= "Panorama Direction: Left to Right\n";
- break;
- case 2: $outputstr .= "Panorama Direction: Right to Left\n";
- break;
- case 3: $outputstr .= "Panorama Direction: Bottom to Top\n";
- break;
- case 4: $outputstr .= "Panorama Direction: Top to Bottom\n";
- break;
- default: $outputstr .= "Unknown Panorama Direction\n";
- break;
- }
-
- // Return the output string
- return $outputstr;
- }
- else
- {
- // Unknown special tag - can't process it here
- return FALSE;
- }
-
- // Unknown special tag - can't process it here
- return FALSE;
-
-}
-
-/******************************************************************************
-* End of Function: get_Olympus_Text_Value
-******************************************************************************/
-
-
-
-
-/******************************************************************************
-*
-* Function: get_Olympus_Makernote_Html
-*
-* Description: Attempts to interpret a makernote into html. Returns false if
-* it is not a makernote that can be processed with this script
-*
-* Parameters: Makernote_Tag - the element of an EXIF array containing the
-* makernote, as returned from get_EXIF_JPEG
-* filename - the name of the JPEG file being processed ( used
-* by scripts which display embedded thumbnails)
-*
-*
-* Returns: output - the html representing the makernote
-* FALSE - If this script could not interpret the makernote, or if
-* an error occured in decoding
-*
-******************************************************************************/
-
-function get_Olympus_Makernote_Html( $Makernote_tag, $filename )
-{
-
- // Check that this tag uses the Olympus tags, otherwise it can't be interpreted here
- if ( $Makernote_tag['Makernote Tags'] != "Olympus" )
- {
- // Not Olympus tags - can't interpret with this function
- return FALSE;
- }
-
- // Check if the Decoded data is valid
- if ( $Makernote_tag['Decoded Data'][0] === FALSE )
- {
- // Decoded data is not valid - can't interpret with this function
- return FALSE;
- }
-
- // Minolta Thumbnail 1
- if ( ( array_key_exists( 0x0088, $Makernote_tag['Decoded Data'][0] ) ) &&
- ( $Makernote_tag['Makernote Tags'] == "Olympus" ) )
- {
- // 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_minolta_thumb.php" , getcwd ( ) );
- $link_str .= "?filename=";
- $link_str .= get_relative_path( $filename, dirname(__FILE__) ."/.." );
-
- // Add thumbnail link to html
- $Makernote_tag['Decoded Data'][0][0x0088]['Text Value'] = "<a class=\"EXIF_Minolta_Thumb_Link\" href=\"$link_str\" ><img class=\"EXIF_Minolta_Thumb\" src=\"$link_str\"></a>";
-
- $Makernote_tag['Decoded Data'][0][0x0088]['Type'] = "String";
- }
- // Minolta Thumbnail 2
- if ( ( array_key_exists( 0x0081, $Makernote_tag['Decoded Data'][0] ) ) &&
- ( $Makernote_tag['Makernote Tags'] == "Olympus" ) )
- {
- // 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_minolta_thumb.php" , getcwd ( ) );
- $link_str .= "?filename=";
- $link_str .= get_relative_path( $filename, dirname(__FILE__) ."/.." );
-
- // Add thumbnail link to html
- $Makernote_tag['Decoded Data'][0][0x0081]['Text Value'] = "<a class=\"EXIF_Minolta_Thumb_Link\" href=\"$link_str\" ><img class=\"EXIF_Minolta_Thumb\" src=\"$link_str\"></a>";
- $Makernote_tag['Decoded Data'][0][0x0081]['Type'] = "String";
- }
-
- // Interpret the IFD and return the HTML
- return interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename );
-
-}
-
-/******************************************************************************
-* End of Function: get_Olympus_Makernote_Html
-******************************************************************************/
-
-
-
-
-
-
-
-
-
-
-
-
-/******************************************************************************
-* Global Variable: IFD_Tag_Definitions, Olympus
-*
-* Contents: This global variable provides definitions of the known Olympus
-* Makernote tags, indexed by their tag number.
-* It also includes Minolta and Agfa tags, as they use many of the
-* same tags
-*
-******************************************************************************/
-
-$GLOBALS[ "IFD_Tag_Definitions" ]["Olympus"] = array(
-
-0x0000 => array( 'Name' => "Makernote Version", // Minolta
- 'Type' => "String" ),
-
-0x0001 => array( 'Name' => "Camera Settings", // Minolta
- 'Type' => "Special" ),
-
-0x0003 => array( 'Name' => "Camera Settings", // Minolta
- 'Type' => "Special" ),
-
-0x0040 => array( 'Name' => "Compressed Image Size", // Minolta
- 'Type' => "Numeric",
- 'Units' => "Bytes" ),
-
-0x0081 => array( 'Name' => "Minolta Thumbnail", // Minolta
- 'Type' => "Special" ),
-
-0x0088 => array( 'Name' => "Minolta Thumbnail", // Minolta
- 'Type' => "Special" ),
-
-0x0089 => array( 'Name' => "Minolta Thumbnail Length", // Minolta
- 'Type' => "Numeric",
- 'Units' => "bytes" ),
-
-0x0101 => array( 'Name' => "Colour Mode", // Minolta
- 'Type' => "Lookup",
- 0 => "Natural Colour",
- 1 => "Black & White",
- 2 => "Vivid colour",
- 3 => "Solarization",
- 4 => "AdobeRGB" ),
-
-0x0102 => array( 'Name' => "Image Quality", // Minolta
- 'Type' => "Lookup",
- 0 => "Raw",
- 1 => "Super Fine",
- 2 => "Fine",
- 3 => "Standard",
- 4 => "Extra Fine" ),
-
-0x0103 => array( 'Name' => "Image Quality?", // Minolta
- 'Type' => "Lookup",
- 0 => "Raw",
- 1 => "Super Fine",
- 2 => "Fine",
- 3 => "Standard",
- 4 => "Extra Fine" ),
-
-
-
-0x0200 => array( 'Name' => "Special Mode",
- 'Type' => "Special" ),
-
-
-0x0201 => array( 'Name' => "JPEG Quality",
- 'Type' => "Lookup",
- 1 => "Standard Quality",
- 2 => "High Quality",
- 3 => "Super High Quality" ),
-
-0x0202 => array( 'Name' => "Macro",
- 'Type' => "Lookup",
- 0 => "Normal (Not Macro)",
- 1 => "Macro" ),
-
-0x0204 => array( 'Name' => "Digital Zoom",
- 'Type' => "Numeric",
- 'Units' => " x Digital Zoom, (0 or 1 = normal)" ),
-
-0x0207 => array( 'Name' => "Firmware Version",
- 'Type' => "String" ),
-
-
-0x0208 => array( 'Name' => "Picture Info Data",
- 'Type' => "String" ),
-
-0x0209 => array( 'Name' => "Camera ID",
- 'Type' => "String" ),
-
-
-0x020B => array( 'Name' => "Image Width", // Epson Tag
- 'Type' => "Pixels" ),
-
-0x020C => array( 'Name' => "Image Height", // Epson Tag
- 'Type' => "Pixels" ),
-
-0x020D => array( 'Name' => "Original Manufacturer Model?", // Epson Tag
- 'Type' => "String" ),
-
-0x0E00 => array( 'Name'=> "Print Image Matching Info", // Minolta Tag
- 'Type' => "PIM" ),
-
-0x1004 => array( 'Name' => "Flash Mode",
- 'Type' => "Numeric" ),
-
-0x1006 => array( 'Name' => "Bracket",
- 'Type' => "Numeric" ),
-
-0x100B => array( 'Name' => "Focus Mode",
- 'Type' => "Numeric" ),
-
-0x100C => array( 'Name' => "Focus Distance",
- 'Type' => "Numeric" ),
-
-0x100D => array( 'Name' => "Zoom",
- 'Type' => "Numeric" ),
-
-0x100E => array( 'Name' => "Macro Focus",
- 'Type' => "Numeric" ),
-
-0x100F => array( 'Name' => "Sharpness",
- 'Type' => "Numeric" ),
-
-0x1011 => array( 'Name' => "Colour Matrix",
- 'Type' => "Numeric" ),
-
-0x1012 => array( 'Name' => "Black Level",
- 'Type' => "Numeric" ),
-
-0x1015 => array( 'Name' => "White Balance",
- 'Type' => "Numeric" ),
-
-0x1017 => array( 'Name' => "Red Bias",
- 'Type' => "Numeric" ),
-
-0x1018 => array( 'Name' => "Blue Bias",
- 'Type' => "Numeric" ),
-
-0x101A => array( 'Name' => "Serial Number",
- 'Type' => "Numeric" ),
-
-0x1023 => array( 'Name' => "Flash Bias",
- 'Type' => "Numeric" ),
-
-0x1029 => array( 'Name' => "Contrast",
- 'Type' => "Numeric" ),
-
-0x102A => array( 'Name' => "Sharpness Factor",
- 'Type' => "Numeric" ),
-
-0x102B => array( 'Name' => "Colour Control",
- 'Type' => "Numeric" ),
-
-0x102C => array( 'Name' => "Valid Bits",
- 'Type' => "Numeric" ),
-
-0x102D => array( 'Name' => "Coring Filter",
- 'Type' => "Numeric" ),
-
-0x102E => array( 'Name' => "Final Width",
- 'Type' => "Numeric" ),
-
-0x102F => array( 'Name' => "Final Height",
- 'Type' => "Numeric" ),
-
-0x1034 => array( 'Name' => "Compression Ratio",
- 'Type' => "Numeric" ),
-
-
-
-);
-
-
-/******************************************************************************
-* End of Global Variable: IFD_Tag_Definitions, Olympus
-******************************************************************************/
-
-
-
-
-
-?> \ No newline at end of file
generated by cgit v1.3 (git 2.53.0) at 2026-06-29 22:21:30 +0000