Free layer 3 software for linux

uvlan is a project consisting of a User-space Virtual Local Area Network.
In other words, uvlan peers act as nodes on a network switch. Ethernet traffic is routed between peers intelligently. This allows for multiple networks to share resources and even IP address space.
Some may call it a VPN (Virtual Private Network) application, but its much more powerful: it is peer-to-peer, is much simpler, and operates at layer 2 (ethernet). VPNs generally operate at layer-3 (IP), and layer 2 applications like gaming cant be supported with layer 3 tunneling.
Differences with traditional VPN technology:
- It is peer-to-peer
- It doesnt require licensing
- It is much simpler
- It operates at Layer-2 (Ethernet), VPNs generally operate at Layer-3 (IP) Layer-2 applications like gaming cant be supported with Layer-3 tunneling.

Rotter is a Recording of Transmission / Audio Logger for JACK. The project was designed for use by radio stations, who are legally required to keep a recording of all their output. Rotter runs continuously, writing to a new file every hour. It is released under the GPL license.

Rotter can output files in two different strutures, either all files in a single directory or create a directory structure:

flat: /root_directory/YYYY-MM-DD-HH.suffix
hierarchy: /root_directory/YYYY/MM/DD/HH/archive.suffix

The advantage of using a folder hierarchy is that you can store related files in the hours directory.

Usage

rotter [options] < directory >
-a Automatically connect JACK ports
-f < format > Format of recording (see list below)
-b < bitrate > Bitrate of recording (bitstream formats only)
-c < channels > Number of channels
-n < name > Name for this JACK client
-d < hours > Delete files in directory older than this
-R < secs > Length of the ring buffer (in seconds)
-H Create folder hierarchy instead of flat files
-j Dont automatically start jackd
-v Enable verbose mode
-q Enable quiet mode

Supported audio output formats:

mp3 MPEG Audio Layer 3 [Default]
mp2 MPEG Audio Layer 2
aiff AIFF (Apple/SGI 16 bit PCM)
aiff32 AIFF (Apple/SGI 32 bit float)
au AU (Sun/Next 16 bit PCM)
au32 AU (Sun/Next 32 bit float)
caf CAF (Apple 16 bit PCM)
caf32 CAF (Apple 32 bit float)
flac FLAC 16 bit
wav WAV (Microsoft 16 bit PCM)
wav32 WAV (Microsoft 32 bit float)

Example:

rotter -a -f mp3 -d 1000 -b 160 -v /var/achives
[DEBUG] Wed Jun 21 22:54:19 2006 Root directory: /var/archives
[INFO] Wed Jun 21 22:54:19 2006 JACK client registered as rotter.
[DEBUG] Wed Jun 21 22:54:19 2006 Size of the ring buffers is 2.00 seconds (352800 bytes).
[INFO] Wed Jun 21 22:54:19 2006 Encoding using liblame version 3.96.1.
[DEBUG] Wed Jun 21 22:54:19 2006 Input: 44100 Hz, 2 channels
[DEBUG] Wed Jun 21 22:54:19 2006 Output: MPEG-1 Layer 3, 160 kbps, Joint Stereo
[INFO] Wed Jun 21 22:54:19 2006 Connecting alsa_pcm:capture_1 to rotter:left
[INFO] Wed Jun 21 22:54:19 2006 Connecting alsa_pcm:capture_2 to rotter:right
[INFO] Wed Jun 21 22:54:19 2006 Starting new archive file: /var/archives/2006/06/21/22/archive.mp3
[DEBUG] Wed Jun 21 22:54:19 2006 Opening MPEG Audio output file: /var/archives/2006/06/21/22/archive.mp3
[INFO] Wed Jun 21 23:00:00 2006 Starting new archive file: /var/archives/2006/06/21/23/archive.mp3
[DEBUG] Wed Jun 21 23:00:00 2006 Closing MPEG Audio output file.
[DEBUG] Wed Jun 21 23:00:00 2006 Opening MPEG Audio output file: /var/archives/2006/06/21/23/archive.mp3

Start logging audio to hourly files in /var/archives. Rotter will automatically connect itself to the first two JACK output ports it finds and encode to MPEG Layer 3 audio at 128kbps. Each hour it will delete files older than 1000 hours (42 days). Verbose mode means it will display more informational messages.

libgda project aims to provide a free unified data access architecture to the GNOME project. GNOME-DB is useful for any application that accesses persistent data (not only databases, but data), since it now contains a pretty good data management API.
GNOME-DB consists of the following components:
- mergeant: Front-end for database administrators and database application developers.
- libgnomedb: Database Widget Library. These widgets are integrated with the latest versions of glade.
- libgda: data abstraction layer. It can manage data stored in databases or XML files and it can be used by non-GNOME applications.

libASSA is an OO C++ UNIX networking library based on some of the design patterns such as Configurator, Reactor, Acceptor, and Connector collectively known as Adaptive Communication Patterns described in various papers published by Dr. D. C. Schmidt.
libASSA library happily co-exists with other frameworks such as GUI toolkits and various CORBA implementations.
Enhancements:
- The networking layer has been ported to wing32 environment.
- There are minor bugfixes and interface improvements.

EvRouter reads events from the Linux input layer, and acts on them according to a user-specified set of rules. Currently, EvRouter can map events to X11 key and button presses, XMMS commands, and it can also run shell commands.

EvRouter is intended to help legacy applications understand modern events such as mouse wheel movement and special keys on keyboards.

EvRouter also offers hotkey-like functions, and can help existing modern applications deal with events that, for one reason or another, X11 is unaware of (as long as they are accessible through a Linux event device).

The CAN Abstraction Layer (CANAL) provides a single interface for programs to use different CAN drivers.
It consists of a CANAL daemon that handles client and driver communication, a canalLogger that logs messages in a window, and a simple diagnostic application. C++ clases and DLL/DL interfaces are provided.
Enhancements:
- The configuration readings for CanalWorks were upgraded.
- A GUID ordering problem in canald was fixed.
- A problem with clear message list switch in CanalWorks was fixed.
- A problem in which Linux version Level I received a thread with an invalid count returned for DataAvailable was fixed.