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LASH stands for LASH Audio Session Handler. It is a session management
system for audio applications on GNU/Linux. It understands the
JACK low latency audio API and the ALSA MIDI sequencer interface. The
system is comprised of a server program, lashd
, an application
library, liblash
, and a control program - either the command-line
lash_control
or the GTK lash_panel
. The server and
clients communicate over TCP sockets. There are three kinds of clients:
normal clients (audio applications), user interfaces for the server,
and connection patchbays.
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In order to describe the system, we should introduce some terminology.
First of all, the server is the lashd
server program, an
omni-present marshaller and database for storing arbitrary application
data. The library is the `liblash' shared library.
It contains all the functions that an application uses to communicate
with the server and take part in the system. Such an application is
called a client.
The server deals with things in terms of collections of clients,
called projects. A project has a unique string name, a current
directory and a list of clients that are in that project. The server
can have one client that is a server interface that allows the
user to control the server. There are two server interface included
with the system, the lash_control
command-line interface,
and the lash_panel
GTK interface.
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