Welcome
Additional developers are always welcome on the DScaler project!
Over the last year, this project has garnered a large, loyal, active, and knowledgable user-base of videophiles. This project is making waves in the home theater industry! The project is currently in need of developers with a broad range of skills (C++, assembly, user interface, video internals, etc.). Your skills will be utilized immediately, as we seek to keep this extraordinary momentum going.
DScaler is released under the GNU Public License. This means that you are free to make changes to the source and make it do all the things you want it to.
Getting Started
DScaler is a large and fairly complex program, however we are starting to break the program apart and make it less monolithic. This should make it easier to get up to speed quickly on the parts of the program you want to work on.
To get started on DScaler development browse through the source for the most recent public release and check out some of the documents linked below and then introduce yourself to the developers mailing list.
The list is the best place to answer questions as the program is such that no one person understands everything that goes on.
What tools do I need?
The source compiles under MS Visual C++ 6.0 service pack 3 and above with the processor pack installed. To compile the drivers you will need the latest DDK from here.
Essential Reading
Auto Generated Code Documentation
Mark Rejhon's 3:2 Pulldown Algorithm specification. This forms the basis for the 3:2 pulldown detection routine currently in DScaler.
Getting Latest Source Code
The code for this project is held in a CVS server at SourceForge. To get the latest version of the code you will need to have a copy of CVS on your machine. CVS is installed as part of WinCVS (http://cvsgui.sourceforge.net/) and this is probably the easiest way of setting things up.
Once you have installed WinCVS make sure that the CVS.exe is in your path. This can be achieved by adding the directory where you installed CVS to your path.
To get the latest source goto the directory below where you wish to extract the source and type:
cvs -d:pserver:anonymous@deinterlace.cvs.sourceforge.net:/cvsroot/deinterlace login
Then press return when asked for a password, then type
cvs -z3 -d:pserver:anonymous@deinterlace.cvs.sourceforge.net:/cvsroot/deinterlace co DSRend
then type
cvs -z3 -d:pserver:anonymous@deinterlace.cvs.sourceforge.net:/cvsroot/deinterlace co DScaler
To get the DScaler source tree or
cvs -z3 -d:pserver:anonymous@deinterlace.cvs.sourceforge.net:/cvsroot/deinterlace co Deinterlace
To get the old DirectShow filter tree
cvs -z3 -d:pserver:anonymous@deinterlace.cvs.sourceforge.net:/cvsroot/deinterlace co DScaler5
To get the DScaler5 tree
This will get the latest source from the server.
Updating your local copy
Before starting any work on the source make sure you have the latest copy of the source by going into the tree to either the DScaler or Deinterlace directory and typing:
cvs update -d -P
This will update your copy of the code with all the latest changes
Creating a Patch
OK so you've got the latest source and you want to add a new feature or fix a bug, what do you do?
The best way to supply changes to the project is to supply a patch, this lists the changes you have made in a compact way and allows the team to examine the change before adding it into the next version.
To create a patch type:
cvs diff -c > ..\patch.txt
You can post patch files Here. Also you should notify the mailing list about your patch explaining what you've done. Your patch will be reviewed before being committed to CVS.
You will make the project admins very happy if you have read and kept to the project coding standards
What needs Doing?
Please refer to the bugs and Todo pages for the current task list (Note, these may be outdated. It's recommended to join the mailing list to keep yourself up to date!). If you think that you can take on a part of one of these tasks, everyone on the mailing list would love to hear from you.
I want to make a big change or join the project properly
We are usually happy to take new developers on board the project, join the mailing list and talk about your ideas, we would love to hear from you.
If you are invited to join the project you will need to set yourself up as a user on SourceForge here and let the list know your id. Once you have joined the project you will be given commit access to CVS and you will need to set up your CVS differently see here for the instructions.
Sourceforge Project Developer Links
Deinterlace Project Developer Resources
John Adcock's PALMovie deinterlace plugin for bTV.
An explanation of the options available in the DScaler.ini file.
Conexant's Bt 8x8 register tools for Windows 9x.
BT848 Links
bttv - Linux Driver - Without this none of this would have been possible
FreeBSD bt848 Driver Project
Sound Links
This FTP site contains documents on the MSP sound chips and Phillips and Temic tuners that would be useful for anyone looking to improve these areas. I only recently found this site and have had a quick look and found that most of the information you need should be buried in this lot.
thanks | user support | donate | developers | links
