trusty (3) ZirePhoto.3pm.gz

NAME

       Palm::ZirePhoto - Handler for Palm Zire71 Photo thumbnail databases.

SYNOPSIS

           use Palm::ZirePhoto;

DESCRIPTION

       The Zire71 PDB handler is a helper class for the Palm::PDB package. It parses Zire71 Photo thumbnail
       databases (and, hopefully, Tungsten Photo databases). Actual photos are separate databases and must be
       processed separately.

       This database is currently only capable of reading.

   AppInfo block
       The AppInfo block begins with standard category support. See Palm::StdAppInfo for details.

   Records
       Records may contain no data fields. This occurs when the record has been marked deleted on the Palm,
       presumably in order to save space (Photo has no provision for archiving when deleting and the separate
       database storage for the actual images would make it pointless anyways).

           $record = $pdb->{records}[N]

           $record->{'width'}
           $record->{'height'}
           $record->{'size'}

       The actual JPEG images dimensions and (compressed) file size.

           $record->{'thumb'}

       The thumbnail is a very small (max size approx 84x84) JPEG format image.

           $record->{'name'}

       Image name. Appending ".jpg" to this will give the database name of the actual image data.

           $record->{'time1'}
           $record->{'time2'}

       Unix epoch time of when the image was last modified ("time1") and when it was created ("time2").

   Photo Databases
       Actual photos are stored in separate databases. Each record is preceded by an 8 byte header that
       describes it a) as a data block (DBLK) and b) the size of the block.  Records are generally 4k, except
       for the last. To convert a Photo database to a JPEG image, one would do something like:

               use Palm::Raw;

               my $pdb = new Palm::PDB;
               $pdb->Load( "image.jpg.pdb" );
               open F, ">image.jpg";
               for( @{$pdb->{records}} ) {
                       print F substr($_->{'data'}, 8);
               }
               close F;

       Notes are stored at the end of the JPEG image. Use "ParseNote" to get it.

METHODS

       Handling Palm photos can be a bit complicated. Some helper methods are exported to make some special
       cases a bit easier.

   ParseNote
               my $photo = read_jpeg_file( "image.jpg" );
               my $note = Palm::ZirePhoto::ParseNote($photo);
               print "Note: $note" if defined $note;

       The Palm photo application stores user notes at the end of the JPEG file itself. This method will extract
       that note and return it. "undef" is returned if the note is unavailable.

   ParseAlbum
               my $album = slurp("/DCIM/Unfiled/Album.db");
               my @records = Palm::ZirePhoto::ParseAlbum( $album );
               print $_->{name},"\n" for( @records );

       Photos on memory cards are stored in subdirectories of "/DCIM". The meta-data for these images are stored
       in "Album.db" files under each category directory. This method will parse out the meta-data into an array
       of records similar to those returned by "ParseRecord". Thumbnail information, however, is not available.

SOURCE CONTROL

       The source is in Github:

               http://github.com/briandfoy/p5-Palm/tree/master

AUTHOR

       Alessandro Zummo, "<a.zummo@towertech.it>"

       Currently maintained by brian d foy, "<bdfoy@cpan.org>"

SEE ALSO

       Palm::PDB(3)

       Palm::StdAppInfo(3)