Christopher J. Madsen > Palm-1.014 > Palm::ZirePhoto

Download:
Palm-1.014.tar.gz

Dependencies

Annotate this POD

CPAN RT

Open  0
View/Report Bugs
Module Version: 1.014   Source  

NAME ^

Palm::ZirePhoto - Handler for Palm Zire71 Photo thumbnail database

VERSION ^

This document describes version 1.014 of Palm::ZirePhoto, released August 2, 2014 as part of Palm version 1.014.

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.

SEE ALSO ^

Palm::PDB

Palm::StdAppInfo

CONFIGURATION AND ENVIRONMENT ^

Palm::ZirePhoto requires no configuration files or environment variables.

INCOMPATIBILITIES ^

None reported.

BUGS AND LIMITATIONS ^

No bugs have been reported.

AUTHOR ^

Alessandro Zummo <a.zummo AT towertech.it>

Currently maintained by Christopher J. Madsen <perl AT cjmweb.net>

Please report any bugs or feature requests to <bug-Palm AT rt.cpan.org> or through the web interface at http://rt.cpan.org/Public/Bug/Report.html?Queue=Palm.

You can follow or contribute to p5-Palm's development at https://github.com/madsen/p5-Palm.

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2003 by Andrew Arensburger & Alessandro Zummo.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTY ^

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

syntax highlighting: