File Release Notes and Changelog
Release Name: Kamaelia-0.5.0
Notes:
0.5.0
Kamaelia 0.5.0 adds a large number of new components, many of which have
been developed by students participating in Google's Summer Of Code 2006
Programme. There are many new examples demonstrating these new features.
Other highlights include a major revamp to the graphical builder
"Compose" - now supporting graphlines instead of pipelines, and to
"Whiteboard" - now with audio support, paging, history and session
recording.
Additions from SoC 2006:
* BitTorrent client
* OpenGL display components
* Modular http web server and client
Other additions include:
* PyMedia Audio IO and codec access
* Speex audio codec
* Audio mixing and filtering
* Improved Digital TV handling
NEW EXAMPLES:
HTTP spidering:
* Examples/SoC2006/RJL/HTTPSpider
BitTorrent:
* Examples/SoC2006/RJL/TorrentGUI
* Examples/SoC2006/RJL/TorrentSeeder
BitTorrent based peer to peer streaming:
* Examples/SoC2006/RJL/P2PStreamPeer
* Examples/SoC2006/RJL/P2PStreamSeed
OpenGL checkers board:
* Examples/SoC2006/THF/Checkers
OpenGL BitTorrent GUI:
* Examples/SoC2006/THF/TorrentOpenGLGUI
DVB Digital TV timeshifting tools:
* Examples/DVB_Systems/RecordNamedChanel.py
* Examples/DVB_Systems/PersonalVideoRecorder.py
NEW TOOLS
Compose - the graphical builder now handles the creation of graphlines
meaning a richer set of applications may be built graphically - this is
often useful for sketching out a system, since the generated code is
clean and what you would normally write.
Whiteboard - The whiteboard has undergone a revamp, and whilst looking
identical now features audio as well as the graphical drawing interface.
It also now supports paging, which can either be "new page", creating a
fresh blank page, or "checkpoint" saving the page and creating a new one
with the current contents. The whiteboard is now also accompanied by a
recorder & player for recording the session - allowing you to playback
a session (both audio & scribbles). Finally you can also inject the
contents of a MP3 into the session using another whiteboard tool - this
is then distributed to all connected whiteboards, who will distribute
that to other whiteboards. This is expected to be useful for something
like sending audio instructions to either run a brainstorming session,
etc.
HTTP PROTOCOL SERVER AND CLIENT
New components add a modular HTTP server and client compoents, including
a Icecast/SHOUTcast client. The HTTP server is modular, and can be
configured to instantiate different protocol handler components depending
on the request URL.
For more details see: ./Examples/SoC2006/RJL/README-HTTP
BITTORRENT CLIENT INTEGRATION
These components add a fully fledged BitTorrent peer, capable of both
downloading and serving to peers.
These components require the BitTorrent _sources_ to be installed. It has
been tested with version 4.20.8 - use this version or later only.
Get the latest sources from: http://download.bittorrent.com/dl/?M=D
For more details see: ./Examples/SoC2006/RJL/README-BitTorrent
OPEN GL DISPLAY
The range of Kamaelia UI capabilities now includes OpenGL. The design is
similar to the way the existing PyGame display components work: A Display
component provides a core display service and components wishing to
render an OpenGL object use the service it provides.
It includes an ability to 'wrap' existing PyGame components - enabling
them to be displayed as a rectangle within an OpenGL space and to be
interacted with (eg. they can receive mouse motion events, mapped back
from 3d onto the 2d surface)
An 'interactor' framework provides a way to script and control motion and
transformation of OpenGL components.
Components include: button, label, progress bar, and a 'wrapper' for
bringing existing PyGame components.
PYMEDIA AUDIO
A new Kamaelia.Audio namespace has been added. The first components to
populate this provide PyMedia based audio input, output, coding and
decoding.
PyMedia is a cross platform python library providing access to audio and
video capture, codecs and playback. Get it from: http://www.pymedia.org/
NOTE: With version 1.3.7.0 of pymedia, Linux users may experience segfaults
whilst using the audio input component. A patch exists for pymedia
to fix this. Get the patch here:
http://kamaelia.sf.net/t/pymedia_patch.tar.gz
NOTE: If you are using a Kamaelia Bundle, then the pymedia version
included here already contains this bugfix.
SPEEX CODING AND DECODING
A pair of components have been added that use the PySpeex library (version
0.2) to add Speex encoding and decoding:
Speex is an open source audio compresion format optimised for compressing
speech content to very low bitrates (eg. 10kbit/s). Get it from
http://www.speex.org
DIGITAL TERRESTRIAL TELEVISION (DVB-T)
There is now a wider set of Digital TV (DVB-T) support - with a richer
and more complete set of components for demultiplexing and processing
metadata within the stream.
To support this, some experimental code for making public services
(services registered under a name with the coordinating assistant tracker)
easier to create and use has been implemented.
Notable New Components:
* DVB tuner, demuxer and receiver.
* DVB data table reassembler
* Various DVB data table parsers and pretty printers
New Examples:
* A channel recorder that works out itself, from the name of the channel
what streams of data need recording from the broadcast multiplex.
* A personal video recorder that records programmes specified by
programme name and channel name.
Changes from Release Candidate:
* Small bugfixes in various components __kamaelia_components__ lines
* Issues with BitTorrent localisation worked around
* Threaded component asynchronous limit increased to 1000 messages
waiting to be delivered.
Changes:
0.5.0
Kamaelia 0.5.0 adds a large number of new components, many of which have
been developed by students participating in Google's Summer Of Code 2006
Programme. There are many new examples demonstrating these new features.
Other highlights include a major revamp to the graphical builder
"Compose" - now supporting graphlines instead of pipelines, and to
"Whiteboard" - now with audio support, paging, history and session
recording.
Additions from SoC 2006:
* BitTorrent client
* OpenGL display components
* Modular http web server and client
Other additions include:
* PyMedia Audio IO and codec access
* Speex audio codec
* Audio mixing and filtering
* Improved Digital TV handling
NEW EXAMPLES:
HTTP spidering:
* Examples/SoC2006/RJL/HTTPSpider
BitTorrent:
* Examples/SoC2006/RJL/TorrentGUI
* Examples/SoC2006/RJL/TorrentSeeder
BitTorrent based peer to peer streaming:
* Examples/SoC2006/RJL/P2PStreamPeer
* Examples/SoC2006/RJL/P2PStreamSeed
OpenGL checkers board:
* Examples/SoC2006/THF/Checkers
OpenGL BitTorrent GUI:
* Examples/SoC2006/THF/TorrentOpenGLGUI
DVB Digital TV timeshifting tools:
* Examples/DVB_Systems/RecordNamedChanel.py
* Examples/DVB_Systems/PersonalVideoRecorder.py
NEW TOOLS
Compose - the graphical builder now handles the creation of graphlines
meaning a richer set of applications may be built graphically - this is
often useful for sketching out a system, since the generated code is
clean and what you would normally write.
Whiteboard - The whiteboard has undergone a revamp, and whilst looking
identical now features audio as well as the graphical drawing interface.
It also now supports paging, which can either be "new page", creating a
fresh blank page, or "checkpoint" saving the page and creating a new one
with the current contents. The whiteboard is now also accompanied by a
recorder & player for recording the session - allowing you to playback
a session (both audio & scribbles). Finally you can also inject the
contents of a MP3 into the session using another whiteboard tool - this
is then distributed to all connected whiteboards, who will distribute
that to other whiteboards. This is expected to be useful for something
like sending audio instructions to either run a brainstorming session,
etc.
HTTP PROTOCOL SERVER AND CLIENT
New components add a modular HTTP server and client compoents, including
a Icecast/SHOUTcast client. The HTTP server is modular, and can be
configured to instantiate different protocol handler components depending
on the request URL.
For more details see: ./Examples/SoC2006/RJL/README-HTTP
BITTORRENT CLIENT INTEGRATION
These components add a fully fledged BitTorrent peer, capable of both
downloading and serving to peers.
These components require the BitTorrent _sources_ to be installed. It has
been tested with version 4.20.8 - use this version or later only.
Get the latest sources from: http://download.bittorrent.com/dl/?M=D
For more details see: ./Examples/SoC2006/RJL/README-BitTorrent
OPEN GL DISPLAY
The range of Kamaelia UI capabilities now includes OpenGL. The design is
similar to the way the existing PyGame display components work: A Display
component provides a core display service and components wishing to
render an OpenGL object use the service it provides.
It includes an ability to 'wrap' existing PyGame components - enabling
them to be displayed as a rectangle within an OpenGL space and to be
interacted with (eg. they can receive mouse motion events, mapped back
from 3d onto the 2d surface)
An 'interactor' framework provides a way to script and control motion and
transformation of OpenGL components.
Components include: button, label, progress bar, and a 'wrapper' for
bringing existing PyGame components.
PYMEDIA AUDIO
A new Kamaelia.Audio namespace has been added. The first components to
populate this provide PyMedia based audio input, output, coding and
decoding.
PyMedia is a cross platform python library providing access to audio and
video capture, codecs and playback. Get it from: http://www.pymedia.org/
NOTE: With version 1.3.7.0 of pymedia, Linux users may experience segfaults
whilst using the audio input component. A patch exists for pymedia
to fix this. Get the patch here:
http://kamaelia.sf.net/t/pymedia_patch.tar.gz
NOTE: If you are using a Kamaelia Bundle, then the pymedia version
included here already contains this bugfix.
SPEEX CODING AND DECODING
A pair of components have been added that use the PySpeex library (version
0.2) to add Speex encoding and decoding:
Speex is an open source audio compresion format optimised for compressing
speech content to very low bitrates (eg. 10kbit/s). Get it from
http://www.speex.org
DIGITAL TERRESTRIAL TELEVISION (DVB-T)
There is now a wider set of Digital TV (DVB-T) support - with a richer
and more complete set of components for demultiplexing and processing
metadata within the stream.
To support this, some experimental code for making public services
(services registered under a name with the coordinating assistant tracker)
easier to create and use has been implemented.
Notable New Components:
* DVB tuner, demuxer and receiver.
* DVB data table reassembler
* Various DVB data table parsers and pretty printers
New Examples:
* A channel recorder that works out itself, from the name of the channel
what streams of data need recording from the broadcast multiplex.
* A personal video recorder that records programmes specified by
programme name and channel name.
Changes from Release Candidate:
* Small bugfixes in various components __kamaelia_components__ lines
* Issues with BitTorrent localisation worked around
* Threaded component asynchronous limit increased to 1000 messages
waiting to be delivered.
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