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sydra-launch(8)
===============
NAME
----
sydra-launch - tool to start gst-launch style pipelines
SYNOPSIS
--------
....
sydra-launch
[ -h|--help ]
[ -D|--nodaemonize ]
[ -u|--username <username> ]
[ -g|--groupname <groupname> ]
[ -C|--chroot <path> ]
[ -P|--write-pid <filename> ]
[ -L|--log <target>:<level>[,<param1>[,<param2>[..]]] ]
[ -U|--debug ]
[ -n|--appname <name> ]
[ -p|--pipeline <pipeline description> ]
....
DESCRIPTION
-----------
*sydra* is a toolbox which allows you to set up multiple bidirectional
Video/Audio streams from external locations.
*sydra* has been written to be used for the Elevate Festival in Graz
Austria in order to involve external locations to present themselves
at the festival.
This manpage describes *sydra-launch* which is basically a gst-launch equivalent.
The utility creates and runs a gstreamer pipeline which is configured through
command line arguments. The syntax for the pipeline description is the same as for
gst-launch. The sole purpose of this program is that it allows to set the app-name
which will get used for example by xvimagesink to set the window title. This is needed
for sydra to tell a tiling window manager where a window should be shown.
OPTIONS
-------
The following options can be passed to the *sydra-launch* daemon:
*global options*
*-D, --nodaemonize*::
This option instructs *sydra-launch* to run in foreground
instead of becoming a daemon which is the default.
*-u, --username <username>*::
run as this user. If no group is specified (*-g*) the default group of
the user is used. The default is to not drop privileges.
*-g, --groupname <groupname>*::
run as this group. If no username is specified (*-u*) this gets ignored.
The default is to not drop privileges.
*-C, --chroot <path>*::
Instruct *sydra-launch* to run in a chroot jail. The default is
to not run in chroot.
*-P, --write-pid <filename>*::
Instruct *sydra-launch* to write it's pid to this file. The default is
to not create a pid file.
*-L, --log <target>:<level>[,<param1>[,<param2>[..]]]*::
add log target to logging system. This can be invoked several times
in order to log to different targets at the same time. Every target
has its own log level which is a number between 0 and 5. Where 0 means
disabling log and 5 means debug messages are enabled. +
The file target can be used more than once with different levels.
If no target is provided at the command line a single target with the
config *syslog:3,sydra-launch,daemon* is added. +
The following targets are supported:
*syslog*;; log to syslog daemon, parameters <level>[,<logname>[,<facility>]]
*file*;; log to file, parameters <level>[,<path>]
*stdout*;; log to standard output, parameters <level>
*stderr*;; log to standard error, parameters <level>
*-U, --debug*::
This option instructs *sydra-launch* to run in debug mode. It implicits *-D*
(don't daemonize) and adds a log target with the configuration
*stdout:5* (logging with maximum level). In future releases there might
be additional output when this option is supplied.
*-n, --appname <name>*::
This set the application name using 'g_set_prgname()'. It will be used for example
by xvimagesink for window title.
*-p, --pipeline <pipeline description>*::
A gst-launch-style description for the pipeline to get started. This uses the same
syntax as gst-launch.
Example:
'videotestsrc ! video/x-raw,format=I420,width=864,height=480 ! xvimagesink'
BUGS
----
Most likely there are some bugs in *sydra-launch*. If you find a bug, please let
the developers know at equinox@spreadspace.org. Of course, patches are preferred.
SEE ALSO
--------
*gst-launch*(1)
AUTHORS
-------
Christian Pointner <equinox@spreadspace.org>
COPYING
-------
Copyright \(C) 2014 Christian Pointner. This program is free
software: you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or any later version.
|
