ricoh.php

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                // Return the new makernote tag
                return $Makernote_Tag;
        }
        else
        {
                // Unrecognised header for makernote - abort
                return FALSE;
        }

        // Shouldn't get here
        return False;
}

/******************************************************************************
* End of Function:     get_Ricoh_Makernote
******************************************************************************/







/******************************************************************************
*
* Function:     get_Ricoh_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_Ricoh_Makernote_Html( $Makernote_tag, $filename )
{

        // Check if this makernote is Ricoh IFD type
        if ( $Makernote_tag['Makernote Type'] == "Ricoh" )
        {
                // This is a Ricoh IFD makernote - interpret it
                return  interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename );
        }
        // Check if this makernote is Ricoh Text type
        else if ( $Makernote_tag['Makernote Type'] == "Ricoh Text" )
        {
                // This is a Ricoh text makernote
                //  Construct the start of enclosing html for the text
                $output_str = "<table  class=\"EXIF_Table\"border=1><tr class=\"EXIF_Table_Row\"><td class=\"EXIF_Value_Cell\">";

                // Replace the semicolon dividers with line break html tags
                $output_str .= str_replace ( ";", "<BR>\n", $Makernote_tag['Data'] );

                // Close the html
                $output_str .= "</td></tr></table>";

                // Return the html
                return  $output_str;
        }
        // Check if this makernote is a Ricoh Empty makernote
        else if ( $Makernote_tag['Makernote Type'] == "Ricoh Empty Makernote" )
        {
                // Do Nothing
                return "";
        }
        else
        {
                // Don't recognise the Makernote type - not a Ricoh makernote
                return FALSE;
        }

        // shouldn't get here
        return FALSE;
}

/******************************************************************************
* End of Function:     get_Ricoh_Makernote_Html
******************************************************************************/








/******************************************************************************
*
* Function:     get_Ricoh_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_Ricoh_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_Ricoh_Text_Value( $Exif_Tag, $Tag_Definitions_Name )
{

        // Check that this tag uses the Ricoh tags, otherwise it can't be decoded here
        if ( $Tag_Definitions_Name == "Ricoh" )
        {

                // Process the tag acording to it's tag number, to produce a text value
                if ( $Exif_Tag['Tag Number'] == 0x0002 ) // Version tag
                {
                        $tmp = implode ( "\x00", $Exif_Tag['Data']);
                        return "\"" .HTML_UTF8_Escape( $tmp ) . "\" (" . bin2hex( $tmp ) . " hex)";
                }

        }

        // Unknown tag or tag definitions
        return FALSE;

}

/******************************************************************************
* End of Function:     get_Ricoh_Text_Value
******************************************************************************/











/******************************************************************************
* Global Variable:      IFD_Tag_Definitions, Ricoh
*
* Contents:     This global variable provides definitions of the known Ricoh
*               Makernote tags, indexed by their tag number.
*
******************************************************************************/

$GLOBALS[ "IFD_Tag_Definitions" ]["Ricoh"] = array(


0x0001 => array(        'Name' => "Makernote Data Type",
                        'Type' => "String" ),

0x0002 => array(        'Name' => "Version",
                        'Type' => "Special" ),

0x0e00 => array(        'Name' => "Print Image Matching Info",
                        'Type' => "PIM" ),

0x2001 => array(        'Name' => "Ricoh Camera Info Makernote Sub-IFD",
                        'Type' => "Special" ),

);

/******************************************************************************
* End of Global Variable:     IFD_Tag_Definitions, Ricoh
******************************************************************************/








/******************************************************************************
* Global Variable:      IFD_Tag_Definitions, RicohSubIFD
*
* Contents:     This global variable provides definitions of the known Ricoh
*               Camera Info Sub-IFD Makernote tags, indexed by their tag number.
*
******************************************************************************/

$GLOBALS[ "IFD_Tag_Definitions" ]["RicohSubIFD"] = array(

);

/******************************************************************************
* End of Global Variable:     IFD_Tag_Definitions, RicohSubIFD
******************************************************************************/






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