345 lines
12 KiB
PHP
345 lines
12 KiB
PHP
<?php
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/******************************************************************************
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*
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* Filename: fujifilm.php
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*
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* Description: Fujifilm Makernote Parser
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* Provides functions to decode an Fujifilm EXIF makernote and to interpret
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* the resulting array into html.
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* This Makernote format is also used by one Nikon Camera
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*
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* Fujifilm Makernote Format:
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*
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* Field Size Description
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* ----------------------------------------------------------------
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* Header 8 Bytes "FUJIFILM"
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* IFD Offset 4 Bytes Intel Byte aligned offset to IFD from start of Makernote
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* IFD Data Variable NON-Standard IFD Data using Fujifilm Tags
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* Offsets are relative to start of makernote
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* Byte alignment is always Intel
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* ----------------------------------------------------------------
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*
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*
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* Author: Evan Hunter
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*
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* Date: 30/7/2004
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*
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* Project: JPEG Metadata
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*
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* Revision: 1.00
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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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* This file may be used freely for non-commercial purposes.For
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* commercial uses please contact the author: evan@ozhiker.com
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*
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******************************************************************************/
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// Add the parser and interpreter functions to the list of Makernote parsers and interpreters.
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$GLOBALS['Makernote_Function_Array']['Read_Makernote_Tag'][] = "get_Fujifilm_Makernote";
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$GLOBALS['Makernote_Function_Array']['get_Makernote_Text_Value'][] = "get_Fujifilm_Text_Value";
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$GLOBALS['Makernote_Function_Array']['Interpret_Makernote_to_HTML'][] = "get_Fujifilm_Makernote_Html";
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/******************************************************************************
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*
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* Function: get_Fujifilm_Makernote
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*
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* Description: Decodes the Makernote tag and returns the new tag with the decoded
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* information attached. Returns false if this is not a makernote
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* that can be processed with this script
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*
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* Parameters: Makernote_Tag - the element of an EXIF array containing the
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* makernote, as returned from get_EXIF_JPEG
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* EXIF_Array - the entire EXIF array containing the
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* makernote, as returned from get_EXIF_JPEG, in
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* case more information is required for decoding
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* filehnd - an open file handle for the file containing the
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* makernote - does not have to be positioned at the
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* start of the makernote
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* Make_Field - The contents of the EXIF Make field, to aid
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* determining whether this script can decode
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* the makernote
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*
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*
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* Returns: Makernote_Tag - the Makernote_Tag from the parameters, but
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* modified to contain the decoded information
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* FALSE - If this script could not decode the makernote, or if
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* an error occured in decoding
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*
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******************************************************************************/
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function get_Fujifilm_Makernote( $Makernote_Tag, $EXIF_Array, $filehnd, $Make_Field )
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{
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// Check if the Make Field contains the word Fuji or Nikon (One Nikon camera uses this format Makernote)
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if ( ( stristr( $Make_Field, "Fuji" ) === FALSE ) &&
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( stristr( $Make_Field, "Nikon" ) === FALSE ) )
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{
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// Couldn't find Fuji or Nikon in the maker name - abort
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return FALSE;
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}
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// Check if the header exists at the start of the Makernote
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if ( substr( $Makernote_Tag['Data'], 0, 8 ) != "FUJIFILM" )
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{
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// This isn't a Fuji Makernote, abort
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return FALSE;
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}
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// The 4 bytes after the header are the offset to the Fujifilm IFD
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// Get the offset of the IFD
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$ifd_offset = hexdec( bin2hex( strrev( substr( $Makernote_Tag['Data'], 8, 4 ) ) ) );
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// Seek to the start of the IFD
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fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + $ifd_offset );
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// Fuji Makernotes are always Intel Byte Aligned
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$Makernote_Tag['ByteAlign'] = "II";
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// Read the IFD(s) into an array
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$Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'], $Makernote_Tag['ByteAlign'], "Fujifilm" );
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// Save some information into the Tag element to aid interpretation
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$Makernote_Tag['Decoded'] = TRUE;
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$Makernote_Tag['Makernote Type'] = "Fujifilm";
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$Makernote_Tag['Makernote Tags'] = "Fujifilm";
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// Return the new tag
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return $Makernote_Tag;
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}
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/******************************************************************************
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* End of Function: get_Fujifilm_Makernote
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******************************************************************************/
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/******************************************************************************
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*
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* Function: get_Fujifilm_Text_Value
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*
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* Description: Provides a text value for any tag marked as special for makernotes
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* that this script can decode. Returns false if this is not a makernote
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* that can be processed with this script
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*
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* Parameters: Exif_Tag - the element of an the Makernote array containing the
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* tag in question, as returned from get_Fujifilm_Makernote
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* Tag_Definitions_Name - The name of the Tag Definitions group
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* within the global array IFD_Tag_Definitions
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*
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*
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* Returns: output - the text value for the tag
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* FALSE - If this script could not decode the makernote, or if
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* an error occured in decoding
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*
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******************************************************************************/
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function get_Fujifilm_Text_Value( $Exif_Tag, $Tag_Definitions_Name )
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{
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// Check that this tag uses the Fujifilm tag Definitions, otherwise it can't be decoded here
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if ( $Tag_Definitions_Name == "Fujifilm" )
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{
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// No special Tags at this time
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return FALSE;
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}
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return FALSE;
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}
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/******************************************************************************
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* End of Function: get_Fujifilm_Text_Value
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******************************************************************************/
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/******************************************************************************
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*
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* Function: get_Fujifilm_Makernote_Html
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*
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* Description: Attempts to interpret a makernote into html. Returns false if
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* it is not a makernote that can be processed with this script
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*
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* Parameters: Makernote_Tag - the element of an EXIF array containing the
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* makernote, as returned from get_EXIF_JPEG
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* filename - the name of the JPEG file being processed ( used
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* by scripts which display embedded thumbnails)
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*
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*
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* Returns: output - the html representing the makernote
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* FALSE - If this script could not interpret the makernote, or if
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* an error occured in decoding
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*
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******************************************************************************/
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function get_Fujifilm_Makernote_Html( $Makernote_tag, $filename )
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{
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// Check that this tag uses the Fujifilm tags, otherwise it can't be interpreted here
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if ( $Makernote_tag['Makernote Type'] != "Fujifilm" )
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{
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// Not Fujifilm tags - can't interpret with this function
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return FALSE;
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}
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// Interpret the IFD normally
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return interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename );
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}
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/******************************************************************************
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* End of Function: get_Fujifilm_Makernote_Html
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******************************************************************************/
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/******************************************************************************
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* Global Variable: IFD_Tag_Definitions, Fujifilm
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*
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* Contents: This global variable provides definitions of the known Fujifilm
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* Makernote tags, indexed by their tag number.
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*
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******************************************************************************/
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$GLOBALS[ "IFD_Tag_Definitions" ]["Fujifilm"] = array(
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0 => array( 'Name' => "Version",
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'Type' => "String" ),
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4096 => array( 'Name' => "Quality",
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'Type' => "String" ),
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4097 => array( 'Name' => "Sharpness",
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'Type' => "Lookup",
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1 => "Softest",
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2 => "Soft",
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3 => "Normal",
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4 => "Hard",
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5 => "Hardest" ),
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4098 => array( 'Name' => "White Balance",
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'Type' => "Lookup",
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0 => "Auto",
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256 => "Daylight",
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512 => "Cloudy",
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768 => "DaylightColour-fluorescence",
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769 => "DaywhiteColour-fluorescence",
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770 => "White-fluorescence",
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1024 => "Incandenscense",
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3840 => "Custom white balance" ),
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4099 => array( 'Name' => "Colour Saturation",
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'Type' => "Lookup",
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0 => "Normal",
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256 => "High",
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512 => "Low" ),
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4100 => array( 'Name' => "Tone (Contrast)",
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'Type' => "Lookup",
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0 => "Normal",
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256 => "High",
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512 => "Low" ),
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4112 => array( 'Name' => "Flash Mode",
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'Type' => "Lookup",
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0 => "Auto",
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1 => "On",
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2 => "Off",
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3 => "Red-eye Reduction" ),
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4113 => array( 'Name' => "Flash Strength",
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'Type' => "Numeric",
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'Units' => "EV" ),
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4128 => array( 'Name' => "Macro",
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'Type' => "Lookup",
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0 => "Off",
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1 => "On" ),
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4129 => array( 'Name' => "Focus Mode",
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'Type' => "Lookup",
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0 => "Auto Focus",
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1 => "Manual Focus" ),
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4144 => array( 'Name' => "Slow Sync",
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'Type' => "Lookup",
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0 => "Off",
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1 => "On" ),
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4145 => array( 'Name' => "Picture Mode",
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'Type' => "Lookup",
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0 => "Auto",
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1 => "Portrait Scene",
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2 => "Landscape Scene",
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4 => "Sports Scene",
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5 => "Night Scene",
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6 => "Program AE",
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256 => "Aperture priority AE",
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512 => "Shutter priority AE",
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768 => "Manual Exposure" ),
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4352 => array( 'Name' => "Continuous taking or auto bracketing mode",
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'Type' => "Lookup",
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0 => "Off",
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1 => "On" ),
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4864 => array( 'Name' => "Blur Warning",
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'Type' => "Lookup",
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0 => "No Blur Warning",
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1 => "Blur Warning" ),
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4865 => array( 'Name' => "Focus warning",
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'Type' => "Lookup",
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0 => "Auto Focus Good",
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1 => "Out of Focus" ),
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4866 => array( 'Name' => "Auto Exposure Warning",
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'Type' => "Lookup",
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0 => "Auto Exposure Good",
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1 => "Over exposure (>1/1000s,F11)" )
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);
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/******************************************************************************
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* End of Global Variable: IFD_Tag_Definitions, Fujifilm
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******************************************************************************/
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?>
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