[paraslash.git] / FEATURES
1 Features
2 ========
4 configurable audio streaming software:
5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6 para_server streams binary audio data (mp3/ogg files) over
7 local and/or remote networks. It supports three builtin
8 streaming methods (senders): http, dccp, or rtp.
10 para_audiod runs on the client side and connects to
11 para_server. The audio stream is read from the network and
12 sent through any of paraslash's filters (mp3 decoder, ogg
13 vorbis decoder, volume normalizer,...). The resulting stream
14 is written to an external program's standard in, usually an
15 audio player like para_write, which comes with paraslash and
16 contains an alsa player. It is possible to capture the stream
17 at any position in the filter chain.
19 The receiving/filtering software is also available as
20 standalone command line tool: para_recv reads the stream and
21 writes to stdout; para_filter reads from stdin, converts the
22 stream according to the given --filter command line options
23 and writes the transformed stream to stdout.
25 configurable audio file selectors:
26 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
27 There are three audio file selectors available: random,
28 playlist and mysql
30 The first two of these are rather simple, and they are always
31 supported. They allow streaming of randomly selected files
32 or files given by a playlist respectively.
34 The (optional) mysql selector is more involved. It manages
35 statistics on your audio files, and audio file selection is
36 done by sending a user-defined sql-query to the mysql server.
37 This allows rather sophisticated configurations and is
38 explained in detail in README.mysql.
40 It is possible to switch between all supported selectors at
41 any time.
43 small memory footprint:
44 ~~~~~~~~~~~~~~~~~~~~~~~
45 paraslash is lightweight. The stripped binary of para_server
46 with all its features compiled in (mysql/random/playlist
47 selector, mp3/ogg support, http/dccp/ortp support) is about 110K
48 on i386 under Linux. para_audiod is even smaller.
50 command line interface:
51 ~~~~~~~~~~~~~~~~~~~~~~~
52 paraslash commands are sent to para_server and the response is
53 dumped to stdout. This can be used by any scripting language
54 to produce user interfaces with little programming effort.
56 authentication/encryption via openssl:
57 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
58 All connections between para_server and para_client are
59 encrypted by default. For each user of paraslash you must
60 create a public/secret key pair for authentication/encryption.
62 various user interfaces and utilities:
63 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
64 o para_gui. Curses based interface, displays information in a
65 curses window and can be used to easily control para_server
66 and para_audiod.
68 o para_sdl_gui. Shows pictures (on a per song basis) and
69 other information about the current audio file. Can be used
70 as a screen saver.
72 o para_krell. A gkrellm2 plugin that shows small pics and is
73 able to launch 27 different commands by clicking on the image.
75 o para_slider. User-friendly stream creator for people who
76 don't like their keyboard.
78 o para_dbadm. Simple curses interface for changing attributes.
80 o para_fade. Simple volume fader and alarm clock.