Free layer software for linux

The layer extract plug-in is a Gimp plug-in that creates a new image/film by periodically extracting layers from another image.

It takes one interval (number of sequent layers) every period. The number of periods can be limited.

"< Image >/Filters/Animation/Layer Extract"

Simple DirectMedia Layer project is a library that gives portable low-level access for multimedia applications.
Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer. It is used by MPEG playback software, emulators, and many popular games, including the award winning Linux port of "Civilization: Call To Power."
SDL supports Linux, Windows, Windows CE, BeOS, MacOS, Mac OS X, FreeBSD, NetBSD, OpenBSD, BSD/OS, Solaris, IRIX, and QNX. The code contains support for AmigaOS, Dreamcast, Atari, AIX, OSF/Tru64, RISC OS, SymbianOS, and OS/2, but these are not officially supported.
SDL is written in C, but works with C++ natively, and has bindings to several other languages, including Ada, C#, Eiffel, Erlang, Euphoria, Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP, Pike, Pliant, Python, Ruby, and Smalltalk.
SDL is distributed under GNU LGPL version 2. This license allows you to use SDL freely in commercial programs as long as you link with the dynamic library.
Enhancements:
- Dynamic X11 loading is only enabled with gcc 4 supporting -fvisibility=hidden. This fixes crashes related to symbol collisions, and allows building on Solaris and IRIX.
- Fixed building SDL with Xinerama disabled.
- Fixed DRI OpenGL library loading, using RTLD_GLOBAL in dlopen().
- Added pkgconfig configuration support.

OSDL project has for goal to provide a free portable high-level open-source library for multimedia and game programming. It is based upon low level graphical backends, notably Sam Lantingas SDL, which means Simple DirectMedia Library.
OSDL is a C++ framework built currently on top of SDL, thus OSDL stands for Objet oriented Simple DirectMedia Library.
OSDL makes use of the Ceylan library, the place where we gathered all generic developments needed by OSDL.
OSDL is also strongly linked with our project dedicated to the creation of an open-source gaming console, Once Sol. More generally speaking, one may take a look at our project portal, Esperide, which gathers all we are doing in the video game field.
At first, most people are primarily interested in screenshots, then in the OSDL API, finally in the recommended way of getting OSDL, which is named LOANI.
This is still an early stage of OSDLs development, so little information is to be found on this website. We nevertheless hope it will get bigger and bigger, as the source code grows. We advise you to look at the column we named Documentation, since many interesting articles about game creation lie there.
Enhancements:
- SVN used instead of CVS
- The Autotools are used, instead of custom-made GNUMakefiles
- integration to the Ceylan 0.5 version
- OSDL scheduler robustified and enhanced a lot
- numerous tests improved (full test suite added), and many bugs fixed

TAHI Test Suite provides a mechanism for validating an IPv6 implementation against a standardized test for conformance to the IPv6 specification, extensions and directly related protocols.
Enhancements:
- Ported FreeBSD-4.x
- Dont support FreeBSD 2.x
- pa can decode MIP6 packets
- All interoperability test tools is included.

GNU Transport Layer Security Library is a library which implements a secure layer over a reliable transport layer such as TCP/IP. GNU Transport Layer Security Library implements the TLS 1.0 and SSL 3.0 protocols, accompanied with authentication methods such as X.509, OpenPGP, and SRP.
Main features:
- Support for TLS 1.1 and SSL 3.0 protocols
- Support for TLS extensions
- Support for authentication using the SRP protocol
- Support for authentication using both X.509 certificates
- and OpenPGP keys Support for X.509 and OpenPGP certificate handling.
- Supports all the strong encryption algorithms
- Supports compression
- Runs on most Unix platforms
Enhancements:
- Support for Proxy Certificates as per RFC 3820 were added.
- The --generate-proxy option was added to certtool.
- certtool --certificate-info now prints information for Proxy Certificates.
- New APIs were added to set proxy subject names and get or set a proxy cert extension.
- Parsing of pathLenConstraints in BasicConstraints with missing CA was fixed.
- A self-test was added to test for regressions of pathLenConstraint.
- Certtool now prints times in UTC when printing certificate/CRL info.
- Importing of ASCII armored OpenPGP keys was fixed.

Database Independent Abstraction Layer for C (libdbi) implements a database-independent abstraction layer in C, similar to the DBI/DBD layer in Perl.
Writing one generic set of code, programmers can leverage the power of multiple databases and multiple simultaneous database connections by using this framework.
Main features:
Database-level abstraction:
Your programs dont need to deal with the arbitrary interfaces and oddities of each database library. libdbi handles all the details for you, you just tell it what you want the database to do.
Modularity:
Since database code written with libdbi is not tied to one specific database server, you can effortlessly switch databases or give your users the option to specify their own database settings.
Clean interface:
With ample documentation describing libdbi and its well thought out object-oriented design, programming with libdbi should be less painful than programming with native database libraries. And you only need to learn it once instead of learning each database librarys syntax.
Accommodates coder apathy:
libdbi is written to do The Right Thing(tm), not just some quick hack that does the job in a half-assed fashion. This saves tons of your $100/hour time from debugging, so that you can mess around having fun during the hours that clients are paying you to debug. It also strives to reduce the worldwide crisis of carpal tunnel syndrome, so it uses constructs such as this one to pack multiple function calls into one line, saving you the bother of typing more than you have to:
dbi_result_get_fields(result, "id.%i firstname.%s lastname.%s fractional_value.%f", &id, &firstname, &lastname, &floatval);
Driver interface:
The dynamic linking used by libdbi allows for driver authors to license their drivers however they please - they are not restricted to the GPL or LGPL. Drivers are easy to write, and require no special installation.
Error handling:
Instead of checking every single database call for errors, libdbi gives programmers the option of registering an error handler callback, similar to a signal handler. Because we know youll "forget" to check for errors otherwise :)
Convenience:
Spend your time writing clever code, not reinventing the wheel with your own single-use, #define-abusing, less featureful database interface.
libdbi implements a database-independent abstraction layer in C, similar to the DBI/DBD layer in Perl. Writing one generic set of code, programmers can leverage the power of multiple databases and multiple simultaneous database connections by using this framework.
The libdbi-drivers project maintains drivers for libdbi. Drivers are distributed seperately from the library itself.
There are currently drivers for MySQL, PostgreSQL, SQLite, and mSQL. More are on the way.
Enhancements:
- Support for a timezone suffix in time and date types was added.
- Error handling and error reporting were vastly improved.
- Some memory leaks were fixed.

PerlIO::locale is a PerlIO layer to use the encoding of the current locale.

SYNOPSIS

use PerlIO::locale;
open my $filehandle,<<less