View source for SoC 2007

Reflexions for Google Summer of Code applications.

== Introduction & Informations ==

This wiki page deals with [[VideoLAN]] attempt to be a mentoring organisation for [http://code.google.com/soc/ Google Summer of Code]
to improve {{VLC}}.

=== VLC media player ===
{{VLC}} is a Multimedia player, encoder and streamer application, that is platform independant.
It is one of the most successful open-source projects without any professional structure underneath.

{{VLC}} is downloaded at an approximate rate of 4 millions every month from the main website (does not include unofficial mirrors and packaged distribution (linux)), which means about 30 million people have downloaded VLC 0.8.5 from the main website!

You can have more information on [http://en.wikipedia.org/wiki/VLC_media_player VLC on Wikipedia] or on this [[Main_Page|wiki]].

=== Summer of Code ===
We would like to be a mentoring organisation ([http://code.google.com/support/bin/answer.py?answer=60303&topic=10727 mentors on SoC Website]).

If selected and developed, SoC ideas will be included in {{VLC}} 0.9.1, under the GPL licence. 0.9.0 which should be the next version of VLC should be out before the summer.

=== Ideas ===
'''Read this'''

We (the VideoLAN team, and [[User:J-b|jb]], the writer of this page) have split this page in two idea lists: 
* The ''first ideas'' are the ones we would like to focus on, and seem to be key projects for VLC and a lot more ''fun'' than the others; we have affected potential mentors to these projects.
* and other ones that are less detailed but could be good ideas too.

We don't want to impose anything. This is free and Open Source software.

If you don't want to apply for SoC but want other ideas, check the [[Mini Projects]] page!

== Main ideas ==

===  GUI interfaces for the browsers plug-ins ===
This project focuses on adding interfaces to our browser plug-ins, in order to have, in the web pages embedded mode, buttons to control {{VLC}} as in WMP or Youtube player. These buttons need to be cross-platform and cross-browsers.

The second part of this project aims to provide a replacement for all preconfigured media players embedded in web pages, if possible.
 
For example, when a webpage asks for WMP embedded plugin, youtube player, quicktime player or any other, VLC would detect the stream and display it. This would mean less CPU needed than Flash based players...

This project may need to work in concert with some improvements on the cache handling module access.

The look of the interface should not be a problem (it can be added later on).

''Proposed mentor: Quovodis.''

=== Fullscreen Controller ===
This project is easy to describe, it would provide a fullscreen controller for Linux/Unix and Windows, as {{VLC}} already has on MacOS X version since 0.8.6.

It should be draggable, clickable and support the classical control buttons to control VLC playback in fullscreen mode.

With this project, which is not too long, there should be some related work on Vout (Making sure the video output does not close and reopen between files for example...)

''Proposed mentor: Not defined yet''

=== Subtitle support ===

This project would rework the subtitle infrastructure and freetype module in order to read more subtitles:

* support bold, italic, underline, RGB colors, size changes and font changes for a whole line or part of one line, (partial now)
* support for the subtitles HTML tags, and add all the most used subtitles types that are not yet in, (almost complete now)
* support for advanced SSA/ASS rendering using libass or asa or any other mean, (not existing today)
* detecting overlap of two subtitle pictures and moving them so that this is less annoying,
* capability of displaying subtitles with no video enabled for audio books,
* ease the automatic extraction to a filebased format of subtitles. These subtitles can come from videos used in different formats (DVB, line 23...)

Optional related work:
* capability of moving the subtitles in the picture (freetype renderer),
* support for Karaoke subtitles ( :D )

''Proposed mentor: Dnumgis''

=== Vista acceleration and DirectX improvements ===
Current versions of {{VLC}} have a lot of problems on Windows Vista (check the forums for specifics).

We need support for the new EVR (enhanced video renderer) in Windows Vista, and make it the default Video Output module for that OS.

See [http://download.microsoft.com/download/5/b/9/5b97017b-e28a-4bae-ba48-174cf47d23cd/MED134_WH06.ppt Windows Vista Video Pipeline Architecture And Implementation] and [http://msdn2.microsoft.com/en-us/library/ms788119.aspx DirectShow Improvements in Vista]

Some rework and enhancements of the DirectX and Direct3D Video Output modules may also be necessary.

''Proposed mentor: Quovodis''

=== MacOS X and Leopard ===
There are a few MacOS X specific projects, especially for Leopard (Mac OS X 10.5)

* Creation a {{VLC}} framework that can be used by both VLC.app and VLCplugin.bundle to integrate better with other Mac applications
* Adapt and use Leopard enhancements in {{VLC}}: QTKit Capture API, Resolution independence, iChat Theatre, ...

''Proposed mentor : TheDJ''

=== RTSP / Sout (Name to be changed)===
The VLC RTSP implementation is not perfect but is very important to be a true VoD and streaming solution.

* TCP framing and RTSP interleaving for our RTSP VLM server
* HTTP tunneling for our RTSP server
* RTCP usage 
* Improved accounting options for our server (per asset accounting)
* Rework RTP packetizers of VLM/Sout
* Profiling and performance improving of the stream output (mostly HTTP/RTSP/RTP)

''Proposed mentor: jpsaman''

== Other Ideas SoC 2007 ==

=== Matroska (mkv) muxing ===

This project is about writing a mkv muxer for VLC with advanced support (chapters, multiple audio and multiple subtitles, etc...) like when you need to rip or archive a DVD.

FFMPEG project has a similar project, and we could use the libavformat muxer and adapt ourselves, but we are not sure if we will be able to use therefore all the advanced features.

robUx4 can do the mentoring. He has already wrote the demux and has worked for matroska, so knows it very well.

=== VLM Schedule rework ===
VLM is under rework by fenrir on these days. But a rework of our scheduler and recorder could be an interesting project.

=== WinCE port ===
The WinCE port has been broken for some time now before 0.8.4. Reparing the builds of all the external libraries build and making VLC build and work should take some time :D

Then a rework of the interface should happen.

=== Mini Projects - More ideas ===

We have a more general page for ideas for Project in {{VLC}}, that could give you ideas: [[Mini_Projects]].


== Questions? Contact us? ==
If you need to contact us for any questions, you can:
* use this [[Talk:SoC_2007| Talk page]], 
* use the [http://www.videolan.org/developers/lists.html vlc-devel] mailing list,
* come on IRC irc://irc.videolan.org #videolan
* contact one of the mentors,
* or contact [[User:J-b| Jean-Baptiste Kempf]]