Fosdem 2011 odt2daisy odt2braille

odt2daisy & odt2braille:
OpenOffice.org/LibreOffice
Extensions for Accessible
Formats
Christophe Strobbe
K.U.Leuven, Belgium
christophe.strobbe@esat.kuleuven.be

FOSDEM, Brussels, Belgium, 5-6 February 2011

The AEGIS Project
●
EC-funded project, Sep. 2008-Feb.2012
●
20+ partners, including Oracle (Sun),
AOL, RIM, Vodafone Foundation, RNIB,
K.U.Leuven, …
●
Access to desktop, RIAs and mobile
applications
●
Many open-source “prototypes” /
products
●
http://www.aegis-project.eu/

odt2daisy:
Generating DAISY Books from
OpenOffice.org & LibreOffice

Christophe Strobbe
K.U.Leuven, Belgium


Digital Talking Books
●
For persons with “print disabilities”
●
Text + audio (synthetic or human voice)
●
Highlighting synchronised with audio
●
DAISY – ANSI/NISO Z39/86
●
Production: typically
●
by specialised production centres
●
for blind & visually impaired users
●
i.e. not by users (in 2007)


Objectives

Enable end-users to produce DAISY
●
In most European languages
●
In a free and open-source office suite
●
Support:
●
DAISY 3 (with or without audio)
●
DAISY 2.02 (for older players)
●
Multilingual content
●
Mathematical Markup Language

Methodology
●
Build OOo / LibO extension
●
Odt2dtbook by Vincent Spiewak
available in 2008
●
Functionality available as extension and
as reusable JAR (Java Archive)
●
Add:
– DAISY 3 audio, DAISY 2.02
– comprehensive set of test documents
(regression testing)
– Support for multilingual content on
Windows

odt2daisy Components (1)
●
Java Open Document Library (JODL)
●
For ODT / XML preprocessing
●
odt2daisy library
●
Converts ODT to DAISY XML (XSLT)
●
Validates output
●
Reusable Java library
●
Command line interface


odt2daisy Components (2)
●
odt2daisy extension
●
Wrapper for other components:
●
Uses OpenOffice.org UNO API
●
Uses odt2daisy library
●
Uses DAISY Pipeline Lite (speech
synthesis)
●
Includes templates
●
Templates with custom styles for DAISY
production

Results (1)
●
odt2daisy released November 2009
●
Tutorials in various formats (text,
DAISY, video)
●
Developer documentation
●
Test files for regression testing
●
TTS in 27 languages where eSpeak is
available (Linux, Windows)
●
Compatible with OOo Writer 3.0 or
higher and with LibOWriter

Results (2)
●
Support for ODT features
●
Heading, List, Table, Images, Captions,
Notes, Foot/Rear notes, Math, TOC,
Section, Frame, Bookmark,
Metadata, ...
●
Page numbering (1,i,I,a,A; advanced)
●
Front / body / rear matter
●
“Complex text layout” and East-Asian
languages not supported


Results (3)
●
Release 2.1 in April 2010
●
Localisation in French, Dutch, Spanish
and Hungarian
●
Compatible with OpenOffice.org 3.2
●
Has been tested in first ÆGIS pilot
phase
●
Not yet compatible with 64-bit OSs
●
Integrated into DAISY Pipeline by
DAISY Consortium & Dedicon’s altText

Future Plans
●
Support more ODT features
●
Some were hard to parse (e.g.
multilingual text; “Asian” languages)
●
TTS quality:
●
Users want more control over TTS
output (DAISY Pipeline Lite)
●
TTS as internet service/in cloud?
●
Fix bugs (numbered lists, math, image
captions & long description, ...)

Installing odt2daisy
●
Download odt2daisy from
http://odt2daisy.sf.net/
●
In OOo or LibO Writer go to Tools ->
Extension Manager... -> Add...
to install it


Export to DAISY: 1
●
Choose “Export as Full DAISY...” in File
menu
●
Choose file name and location in “Save
as” dialogue
●
Set metadata and options in odt2daisy
dialog


Export to DAISY: 2
●
Some metadata are
copied from source
●
“alternate level
markup”: when > 6
levels of headings
●
CSS: for viewing XML
in browser
●
Some automatic fix
routines

Export to DAISY: 3
●
odt2daisy converts ODT to DAISY XML
●
odt2daisy calls DAISY Pipeline Lite for
text-to-speech


Export to DAISY: 4
●
DAISY Pipeline also performs validation,
e.g. images must be JPG or PNG (or
SVG)


odt2braille:
Generating Braille from
OpenOffice.org & LibreOffice

Christophe Strobbe
K.U.Leuven, Belgium


Motivation & Problem Area (1)
●
Braille
●
faces competition from TTS and digital
talking books
●
important for functional literacy
●
only reading method for deafblind
persons


Motivation & Problem Area (2)
●
Braille production: current methods:
●
RoboBraille: e-mail based Braille translation
agent
●
AutoBraille & NorBraille: multi-volume Braille
books based on DAISY
●
Dots: open-source Braille transcriber for
GNOME (relies on liblouisxml)
●
Tiger Software Suite (TSS), Braille Maker,
WinBraille: embossing from MS Word and
other Microsoft applications


Objectives

Enable end-users to produce Braille
●
In a free, open-source and cross-
platform office suite
=> OpenOffice.org / LibreOffice as
Braille authoring environment
●
Reduce or eliminate the need for editing
Braille codes after export
●
Emboss directly or just export


Methodology
●
Build OpenOffice.org extension
●
Reuse existing tools:
●
liblouisxml: open-source library for
Braille transcription of XML docs
●
liblouis: Braille translation engine
●
pef2text (DAISY Pipeline): converts
Portable Embosser Format to generic or
embosser-specific format
●
library from odt2daisy

odt2braille Components


Results (1)

Alpha 0.03 released 2 December 2010:
●
OpenDocument Text (ODT) can be
embossed on small list of embossers
(Interpoint, Index Braille, Braillo)
●
Export to “Braille Formatted files”
(.brf; .bra)
●
Export to Portable Embosser Format
(PEF): embosser-independent; uses
XML and Unicode

Results (2)
●
Braille settings stored as metadata in
ODT
●
Braille support for ± 30 languages,
mainly through liblouis
●
UI localised in
●
English, Dutch, French, German,
Spanish, Portuguese,...
●
Currently only on Windows


odt2braille > liblouisxml (1)

odt2braille is more than a liblouis &
liblouisxml wrapper (1)
●
Provide easy configuration through GUI
●
Create typical OOo/LibO experience
●
Translate easy-to-understand settings
to complex configuration files for
liblouisxml



●
Convert ODT to intermediate XML
format:
●
Put captions after tables, move some style
info, add notes section, add title page
●
= for sequential processing by liblouis
●
(ODT is too complex to be handled by
liblouisxml alone)



●
Compensate for limitations of
liblouisxml
●
Volume management
●
Creation of notesections and preliminary
section containing title page, list of
special symbols, transriber’s notes page
and a table of contents



●
Store settings as metadata in ODT
document
●
Convert to PEF / various other output
formats
●
Provide output preview
●
Handle embossing


Installing odt2braille
●
Download odt2braille from
http://odt2braille.sf.net/
●
In Writer go to Tools -> Extension
Manager... -> Add... to install it
●
New items in File menu


Braille Settings
●
File -> Braille
Settings
●
odt2braille
analyses
document &
suggests
settings
●
User can
override settings


Export as Braille: 1
●
File -> Export as
Braille...
●
Choose PEF (Portable
Embosser Format), BRF
(Braille Formatted) or
BRA (Spain)
●
Customise...


Export as Braille: 2
●
odt2braille performs a few basic
accessibility checks
●
A full accessibility checker is being
developed by K.U.Leuven (AEGIS)


Emboss
●
File -> Emboss...
●
Few embossers
currently supported
●
Output can be
customised


Future Plans
●
Support for larger set of embossers
●
Availability on non-Windows platforms
●
Extension to check accessibility in
OpenOffice.org / LibreOffice Writer
●
Display errors & warnings in task panel
(OOo / LibO 3.3+)
●
Description & hints for repair
●
Repair button when possible


Contact Information
●
odt2daisy (LGPL 3):
http://odt2daisy.sf.net/
●
odt2braille (LGPL 3):
http://odt2braille.sf.net/
●
http://www.AEGIS-project.eu/
●
Twitter: aegisproj
●
Christophe Strobbe:

Fosdem 2011 odt2daisy odt2braille

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