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'] = "
";
$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'] = "
";
$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
******************************************************************************/
?>