-Paraslash README
-================
+README
+======
+
+----
Paraslash is an acronym for
- Play, archive, rate and stream large audio sets happily
+_Play, archive, rate and stream large audio sets happily_
It contains the following programs:
-- para_server (obligatory):
+-----------------------
+para_server (obligatory)
+-----------------------
+
+para_server streams binary audio data (mp3/oggvorbis/m4a files)
+over local and/or remote networks. It listens on a tcp port and
+accepts commands such as play, stop, pause, next from authenticated
+clients. However, there are many more commands.
+
+It supports three builtin network streaming methods (senders): http, dccp,
+or rtp.
- This server listens on a tcp port and accepts commands such as
- play, stop, pause, next from authenticated clients.
+ * The http sender is recommended for public streams that can be played
+ by any player like mpg123, xmms, itunes, winamp...
- For audio streaming, at least one of the three supported senders
- of para_server must be activated:
+ * The dccp sender is experimental and requires kernel support for the
+ rather new datagram congestion control protocol.
- The http sender is recommended for public streams that can
- be played by any player like mpg123, xmms, winamp...
+ * The ortp sender is recommended for multicast LAN streaming
- The dccp sender is experimental and requires kernel support
- for the rather new datagram congestion control protocol.
+It is possible to activate more than one sender simultaneously.
- The ortp sender is recommended for LAN streaming and for
- private streams that require authentication.
+para_server needs an audio file selector to work, mainly to determine
+which audio file to stream next. The following three selectors are
+built in:
- It is possible to activate more than one sender simultaneously.
- All senders have the same set of commands that allow to
- control the access permissions of the stream.
+ * The random selector chooses audio files out of a given directory
+ by random
- para_server needs an "audio file selector" to work, mainly
- to determine which song to stream next. There are three
- selectors available: random, playlist and mysql. The former
- chooses audio files randomly and playlist can handle, well,
- playlists. Both are always supported.
+ * The playlist selector chooses files from a specified playlist
- The optional mysql selector connects to a mysql server which
- holds information on your audio files. It has several unusual
- features, see README.mysql for details.
+ * The (optional) mysql selector is more involved. It connects
+ to a mysql server which holds information on your audio files
+ and maintains statistics on the available audio files. Audio
+ file selection works by sending a user-defined sql-query
+ to the mysql server. This allows rather sophisticated
+ configurations and is explained in detail in README.mysql.
-- para_client (obligatory):
+It is possible to switch between all supported selectors at any time.
- The client program to connect to para_server.
+Despite of all these features, paraslash is lightweight. The
+stripped binary of para_server with all its features compiled in
+(mysql/random/playlist selector, mp3/ogg/aac support, http/dccp/ortp
+support) is about 120K on i386 under Linux. para_audiod (see below)
+is even smaller.
-- para_recv (optional)
+------------------------
+para_client (obligatory)
+------------------------
- A command line http/dccp/rtp stream grabber.
+The client program to connect to para_server. paraslash commands
+are sent to para_server and the response is dumped to stdout. This
+can be used by any scripting language to produce user interfaces with
+little programming effort.
-- para_filter (optional)
+All connections between para_server and para_client are encrypted by
+default. For each user of paraslash you must create a public/secret
+key pair for authentication. The (authenticated) connection is crypted
+with a symmetric rc4 session key.
- A filter program that converts from stdin and writes to
- stdout. This one is independent from the rest of paraslash,
- so it might be useful also for different purposes.
+--------------------
+para_recv (optional)
+--------------------
- para_filter combines an mp3 decoder an oggvorbis decoder
- and a volume normalzer. New filters can be added easily due
- to the modular design. If more than one filter is specified,
- the given filters are 'piped' together in-memory, i.e. without
- calling any of the read(2)/write(2)/select(2) etc. functions.
+A command line http/dccp/rtp stream grabber. The http mode of this tool
+can be used to receive date from any http streaming source.
-- para_write (obligatory)
+----------------------
+para_filter (optional)
+----------------------
- A modular audio stream writer. It supports a simple file
- writer output plugin and an optional wav/raw player for alsa.
- Debian package: libasound2-dev
+A filter program that converts from stdin and writes to stdout. It
+is completely independent from the rest of paraslash, so it might be
+useful also for different purposes.
-- para_audiod (optional, but recommended):
+para_filter combines several decoders (mp3, oggvorbis, aac) and a
+volume normalzer. New filters can be added easily due to the modular
+design. If more than one filter is specified, the given filters
+are 'piped' together in-memory, i.e. without calling any of the
+read(2)/write(2)/select(2) etc. functions.
- The local daemon that collects information from para_server. It
- starts an appropriate receiver, filter and player as soon
- as para_server announces the availability (and the type) of
- an audio stream. para_audiod listens on a local socket and
- sends status information about para_server and para_audiod
- to local clients on request.
+-----------------------
+para_write (obligatory)
+-----------------------
-- para_audioc (optional, but recommended)
+A modular audio stream writer. It supports a simple file writer
+output plugin and optional wav/raw players for alsa (linux-only,
+Debian package: libasound2-dev) and Mac OS. para_write can also be
+used as a stand-alone wav or raw audio player.
- The client program which talks with para_audiod. Used to
- control para_audiod, to receive status info, or to grab the
- stream at any point in the filter chain.
+---------------------------------------
+para_audiod (optional, but recommended)
+---------------------------------------
- para_audioc (hence para_audiod) is needed by para_gui,
- para_sdl_gui and para_krell, see below.
+The local daemon that collects information from para_server.
-- para_gui (optional):
+It runs on the client side and connects to para_server. The audio stream is
+read from the network and sent through any of paraslash's filters (decoder,
+volume normalizer). The resulting stream is written to an output plugin
+(writer), e.g. the alsa writer on linux systems. It is possible to capture the
+stream at any position in the filter chain.
- Themable ncurses-based gui. It calls para_audioc and presents
- the obtained information in an ncurses window. para_gui
- provides key-bindings for the most common commands and new
- key-bindings can be added easily.
+para_audiod starts an appropriate receiver, filter and player as soon as
+para_server announces the availability (and the type) of an audio stream.
+Moreover, it listens on a local socket and sends status information about
+para_server and para_audiod to local clients on request.
-- para_sdl_gui (optional):
+--------------------------------------
+para_audioc (optional, but recommended)
+--------------------------------------
- SDL-based gui. Similar to para_gui but presents its output
- in an X window (fullscreen mode is also available) and can
- display jpg images on a per song basis. para_sdl_gui provides
- an input prompt to enter arbitrary commands. However, it
- can also be used non-interactively (e.g. as a screen saver)
- via the -i switch.
+The client program which talks with para_audiod. Used to control
+para_audiod, to receive status info, or to grab the stream at any
+point in the filter chain.
-- para_krell (optional, only useful in conjunction with the mysql selector):
+para_audioc (hence para_audiod) is needed by para_gui, para_sdl_gui
+and para_krell, see below.
- A plugin for gkrellm which shows small pictures of the
- current song. It allows you to launch 27 different commands
- by clicking in different areas of its picture (9 small squares
- x 3 mouse buttons).
+-------------------
+para_gui (optional)
+-------------------
-- para_fade (optional):
+Themable ncurses-based gui. It calls para_audioc and presents
+the obtained information in an ncurses window. para_gui provides
+key-bindings for the most common commands and new key-bindings can
+be added easily.
+
+-----------------------
+para_sdl_gui (optional)
+-----------------------
+
+SDL-based gui. Similar to para_gui but presents its output in an X
+window (fullscreen mode is also available) and can display jpg images
+on a per song basis. para_sdl_gui provides an input prompt to enter
+arbitrary commands. However, it can also be used non-interactively
+(e.g. as a screen saver) via the -i switch.
- A (Linux-only) alarm clock and volume-fader.
+-------------------------------------------------------------------------
+para_krell (optional, only useful in conjunction with the mysql selector)
+-------------------------------------------------------------------------
+
+A plugin for gkrellm which shows small pictures of the current song. It
+allows you to launch 27 different commands by clicking in different
+areas of its picture (9 small squares x 3 mouse buttons).
-- para_dbadm (optional, only useful in conjunction with the mysql selector):
+--------------------
+para_fade (optional)
+--------------------
- Very simple curses-based frontend which uses libmenu. Useful
- for quickly changing the attributes of the current song
- (e.g. from para_gui as an external command).
+A (Linux-only) alarm clock and volume-fader.
+
+-------------------------------------------------------------------------
+para_dbadm (optional, only useful in conjunction with the mysql selector)
+-------------------------------------------------------------------------
-- para_slider (optional, only useful in conjunction with the mysql selector):
+Very simple curses-based frontend which uses libmenu. Useful for
+quickly changing the attributes of the current song (e.g. from para_gui
+as an external command).
- A small X application which shows a scrollbar for each
- attribute defined in the mysql database. It creates a stream
- definition from the values of the scrollbars. This allows
- to smoothly change the mood of the given stream without any
- file editing.
+--------------------------------------------------------------------------
+para_slider (optional, only useful in conjunction with the mysql selector)
+--------------------------------------------------------------------------
-- bash_completion (optional):
+A small X application which shows a scrollbar for each attribute
+defined in the mysql database. It creates a stream definition from
+the values of the scrollbars. This allows to smoothly change the mood
+of the given stream without any file editing.
+
+--------------------------
+bash_completion (optional)
+--------------------------
+
+A small bash script for inclusion in ~/.bashrc. It gives you command
+line completion for some paraslash commands.
- A small bash script for inclusion in ~/.bashrc. It gives you
- command line completion for some paraslash commands.
+------------
+Requirements
+------------
-REQUIREMENTS:
-~~~~~~~~~~~~~
In any case you need
- gcc, the gnu compiler collection (shipped with distro): gcc-3.3
- or newer is required.
-
+ or newer is required.
- openssl (needed by server, client): usually shipped with
- distro, but you might have to install the "development"
- package as well
-
- http://www.openssl.org/
-
+ distro, but you might have to install the "development package"
+ (called libssl-dev on debian systems) as well:
+ http://www.openssl.org/
- software mixing, e.g. ALSA and the direct mixing plugin (dmix)
If you want to use the mysql-based audio file selector, you also need
These are usually shipped with the distro but probably not installed
by default.
-The mp3 decoder of para_filter is based on libmad:
-
- http://www.underbit.com/products/mad/
-
-If you prefer to use the libmad package provided by your distributor,
-make sure to install the corresponding development package as well.
-
-If you want to stream ogg vorbis files you'll need:
-
- - libogg, libvorbis, libvorbisfile, and a command line ogg vorbis
- decoder, e.g. para_filter or ogg123.
-
- http://www.xiph.org/downloads/
-
-Debian packages: libogg-dev libvorbis-dev
+The mp3 decoder of para_filter is based on libmad: If you prefer to
+use the libmad package provided by your distributor, make sure to
+install the corresponding development package as well. Otherwise,
+just download libmad from http://www.underbit.com/products/mad/
-Note that para_audiod still works even if neither mp3 nor ogg support
-was compiled in. You'll have to use the --no_default_filters option
-in this case (and e.g. "mpg123 -" as the stream write command).
+For ogg vorbis streams you'll need libogg, libvorbis, libvorbisfile,
+The corresponding Debian packages are called libogg-dev libvorbis-dev,
+other distributors chose similar names. All of these are also
+available at http://www.xiph.org/downloads/
-If you intend to use the optional ortp streamer:
-
- - libortp
-
- http://www.linphone.org/ortp/
+For aac files (m4a) you'll need libfaad. Get it at
+http://www.audiocoding.com/modules/wiki/?page=AAC
+If you intend to use the optional ortp streamer, you'll need libortp:
+http://www.linphone.org/ortp/
For the optional SDL-based gui, the following packages must be installed:
- - X (usually shipped with distro)
-
- http://www.x.org/
-
- - libSDL (usually shipped with distro)
-
- http://www.libsdl.org/index.php
-
- - SDL_image
+ - X (usually shipped with distro): http://www.x.org/
+ - libSDL (usually shipped with distro): http://www.libsdl.org/index.php
+ - SDL_image: http://www.libsdl.org/projects/SDL_image/
- http://www.libsdl.org/projects/SDL_image/
-
-For para_slider, the zero memory widget library is neccessary. Get it at
-
- http://www710.univ-lyon1.fr/~exco/ZMW/
+For para_slider, the zero memory widget library is neccessary:
+http://www710.univ-lyon1.fr/~exco/ZMW/
Finally, para_krell needs
- - gtk2
-
- http://www.gtk.org/
+ - gtk2: http://www.gtk.org/
+ - gkrellm2: http://members.dslextreme.com/users/billw/gkrellm/gkrellm.html
- - gkrellm2
+-------
+LICENSE
+-------
- http://members.dslextreme.com/users/billw/gkrellm/gkrellm.html
-
-LICENSE:
-~~~~~~~~
Distribution of paraslash is covered by the GNU GPL. See file COPYING.
-THE AUTHOR:
-~~~~~~~~~~~
-Author: Andre Noll <maan@systemlinux.org>
+----------
+THE AUTHOR
+----------
+
+Andre Noll <maan@systemlinux.org>
Comments and bug reports are welcome.
projects / paraslash.git / blobdiff