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Diffstat (limited to 'includes/jpeg_metadata_tk/Makernotes/Pentax.php')
| -rw-r--r-- | includes/jpeg_metadata_tk/Makernotes/Pentax.php | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/includes/jpeg_metadata_tk/Makernotes/Pentax.php b/includes/jpeg_metadata_tk/Makernotes/Pentax.php new file mode 100644 index 0000000..10194a6 --- /dev/null +++ b/includes/jpeg_metadata_tk/Makernotes/Pentax.php @@ -0,0 +1,353 @@ +<?php + +/****************************************************************************** +* +* Filename: pentax.php +* +* Description: Pentax (Asahi) Makernote Parser +* Provides functions to decode an Pentax (Asahi) EXIF makernote and to interpret +* the resulting array into html. +* +* Pentax Makernote Format: +* +* Type 1 +* +* Field Size Description +* ---------------------------------------------------------------- +* IFD Data Variable NON-Standard IFD Data using Pentax Tags +* IFD has no Next-IFD pointer at end of IFD, +* and Offsets are relative to the start +* of the current IFD tag, not the TIFF header +* ---------------------------------------------------------------- +* +* +* Type 2 +* +* Field Size Description +* ---------------------------------------------------------------- +* Header 4 Bytes "AOC\x00" +* Unknown 2 Bytes Unknown field +* IFD Data Variable NON-Standard IFD Data using Casio Type 2 Tags +* IFD has no Next-IFD pointer at end of IFD, +* and Offsets are relative to the start +* of the current IFD tag, not the TIFF header +* ---------------------------------------------------------------- +* +* +* +* Author: Evan Hunter +* +* Date: 30/7/2004 +* +* Project: JPEG Metadata +* +* Revision: 1.00 +* +* 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 +* +******************************************************************************/ + + +// Pentax Type 2 makernote uses Casio Type 2 tags - ensure they are included + +include_once 'casio.php'; + + + +// Add the parser and interpreter functions to the list of Makernote parsers and interpreters. + +$GLOBALS['Makernote_Function_Array']['Read_Makernote_Tag'][] = "get_Pentax_Makernote"; +$GLOBALS['Makernote_Function_Array']['get_Makernote_Text_Value'][] = "get_Pentax_Text_Value"; +$GLOBALS['Makernote_Function_Array']['Interpret_Makernote_to_HTML'][] = "get_Pentax_Makernote_Html"; + + + + + + + +/****************************************************************************** +* +* Function: get_Pentax_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_Pentax_Makernote( $Makernote_Tag, $EXIF_Array, $filehnd, $Make_Field ) +{ + // Check if the Make Field contains the word Pentax or Asahi + if ( ( stristr( $Make_Field, "Pentax" ) === FALSE ) && + ( stristr( $Make_Field, "Asahi" ) === FALSE ) ) + { + // Couldn't find Pentax or Asahi in the maker - abort + return FALSE; + } + + // Check if the header exists at the start of the Makernote + if ( substr( $Makernote_Tag['Data'], 0, 4 ) == "AOC\x00" ) + { + // Type 2 Pentax Makernote + + // Seek to the start of the IFD + fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + 6 ); + + // Read the IFD(s) into an array + $Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'], $Makernote_Tag['ByteAlign'], "Casio Type 2" ); + + // Save some information into the Tag element to aid interpretation + $Makernote_Tag['Decoded'] = TRUE; + $Makernote_Tag['Makernote Type'] = "Casio Type 2"; + $Makernote_Tag['Makernote Tags'] = "Casio Type 2"; + + // Return the new tag + return $Makernote_Tag; + } + else + { + // Type 1 Penax Makernote + + // Seek to the start of the IFD + fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + 0 ); + + // Read the IFD(s) into an array + $Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'], $Makernote_Tag['ByteAlign'], "Pentax" ); + + // Save some information into the Tag element to aid interpretation + $Makernote_Tag['Decoded'] = TRUE; + $Makernote_Tag['Makernote Type'] = "Pentax"; + $Makernote_Tag['Makernote Tags'] = "Pentax"; + + // Return the new tag + return $Makernote_Tag; + } + + + // Shouldn't get here + return FALSE; +} + +/****************************************************************************** +* End of Function: get_Pentax_Makernote +******************************************************************************/ + + + + + + + +/****************************************************************************** +* +* Function: get_Pentax_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_Pentax_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_Pentax_Text_Value( $Exif_Tag, $Tag_Definitions_Name ) +{ + // Check that this tag uses the Pentax tags, otherwise it can't be interpreted here + if ( $Tag_Definitions_Name == "Pentax" ) + { + // No Special Tags so far + return FALSE; + } + + return FALSE; +} + +/****************************************************************************** +* End of Function: get_Pentax_Text_Value +******************************************************************************/ + + + + + + +/****************************************************************************** +* +* Function: get_Pentax_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_Pentax_Makernote_Html( $Makernote_tag, $filename ) +{ + // Check that this is a Pentax type makernote + if ( $Makernote_tag['Makernote Type'] != "Pentax" ) + { + // Not a Pentax makernote - abort + return False; + } + + // Interpret the IFD and return the html + return interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename ); + +} + +/****************************************************************************** +* End of Function: get_Pentax_Makernote_Html +******************************************************************************/ + + + + + + + + + + +/****************************************************************************** +* Global Variable: IFD_Tag_Definitions, Pentax +* +* Contents: This global variable provides definitions of the known Pentax Type 1 +* Makernote tags, indexed by their tag number. +* +******************************************************************************/ + +$GLOBALS[ "IFD_Tag_Definitions" ]["Pentax"] = array( + + +0x0001 => array( 'Name' => "Capture Mode", + 'Type' => "Lookup", + 0 => "Auto", + 1 => "Night-scene", + 2 => "Manual", + 4 => "Multiple" ), + +0x0002 => array( 'Name' => "Quality Level", + 'Type' => "Lookup", + 0 => "Good", + 1 => "Better", + 2 => "Best" ), + +0x0003 => array( 'Name' => "Focus Mode", + 'Type' => "Lookup", + 2 => "Custom", + 3 => "Auto" ), + +0x0004 => array( 'Name' => "Flash Mode", + 'Type' => "Lookup", + 1 => "Auto", + 2 => "Flash on", + 4 => "Flash off", + 6 => "Red-eye Reduction" ), + +0x0007 => array( 'Name' => "White Balance", + 'Type' => "Lookup", + 0 => "Auto", + 1 => "Daylight", + 2 => "Shade", + 3 => "Tungsten", + 4 => "Fluorescent", + 5 => "Manual" ), + + +0x000a => array( 'Name' => "Digital Zoom", + 'Type' => "Numeric", + 'Units' => " (0 = Off)" ), + +0x000b => array( 'Name' => "Sharpness", + 'Type' => "Lookup", + 0 => "Normal", + 1 => "Soft", + 2 => "Hard" ), + +0x000c => array( 'Name' => "Contrast", + 'Type' => "Lookup", + 0 => "Normal", + 1 => "Low", + 2 => "High" ), + +0x000d => array( 'Name' => "Saturation", + 'Type' => "Lookup", + 0 => "Normal", + 1 => "Low", + 2 => "High" ), + +0x0014 => array( 'Name' => "ISO Speed", + 'Type' => "Lookup", + 10 => "100", + 16 => "200", + 100 => "100", + 200 => "200" ), + +0x0017 => array( 'Name' => "Colour", + 'Type' => "Lookup", + 1 => "Normal", + 2 => "Black & White", + 3 => "Sepia" ), + +0x0e00 => array( 'Name' => "Print Image Matching Info", + 'Type' => "PIM" ), + +0x1000 => array( 'Name' => "Time Zone", + 'Type' => "String" ), + +0x1001 => array( 'Name' => "Daylight Savings", + 'Type' => "String" ), + + + + + +); + +/****************************************************************************** +* End of Global Variable: IFD_Tag_Definitions, Pentax +******************************************************************************/ + + + +?> |