Difference between revisions of "GenReS"

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(→‎options in genres.conf)
m (Reverted edit of Khlut, changed back to last version by 87.74.87.152)
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*[http://freshmeat.net/projects/genres/ Subscribe for news]
 
*[http://freshmeat.net/projects/genres/ Subscribe for news]
 
*[http://sourceforge.net/projects/genres/ Mirror]
 
*[http://sourceforge.net/projects/genres/ Mirror]
−
== Configuration ==
+
== Static tag parameters ==
−
The plugin uses "~/.mozilla/genres/genres.conf" or "/etc/genres.conf" as main config file.
 
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Options for mplayer, mencoder and ElphelOgm are stored in the config file "~/.mozilla/genres/mplayer.conf", which is used by mplayer.pl control script.
 
−
The files can contain shell-like comments.
 
−
=== options in genres.conf ===
 
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;mozillastreams {1|0} :- use or not mozilla streams (and cache) for http, https and ftp;
 
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;debuglevel {1|0} :- enable or disable the debug output.
 
−
 
 
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=== options in mplayer.conf ===
 
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;out_file_once=template :- template for filename;
 
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;out_file=template :- template for filename for tags with parameter save=auto;
 
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;vo={x11,xv} :- Video output driver (see man mplayer about -vo option);
 
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;ao={arts,esd,alsa,oss} :- Audio output driver (see man mplayer about -ao option);
 
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;not_ask={1|0} :- not show file save dialog for tags with save=auto parameter;
 
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;frames=number :- Frames per file limit for recording (output will be splitted).
 
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== Usage in Javascript ==
 
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=== Static tag parameters ===
 
 
;lowres: decimation for accelerated DCT (0-3);
 
;lowres: decimation for accelerated DCT (0-3);
 
;width: width of the object window;
 
;width: width of the object window;
 
;loop: number of iterations of the playback (0 or nothing is infinite);
 
;loop: number of iterations of the playback (0 or nothing is infinite);
 
;fps: frame frequency;
 
;fps: frame frequency;
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;frameskip : skip n frames after one saved;
 
  
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=== Dynamic variables (can also be used as the parameters of tags) ===
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== Dynamic variables (can also be used as the parameters of tags) ==
 
;href: url of the file or stream;
 
;href: url of the file or stream;
 
;src: as yet simply another name for href.
 
;src: as yet simply another name for href.
 
;pause=1 or play=0: to pause player;
 
;pause=1 or play=0: to pause player;
 
;pause=0 or play=1: to continue playback;
 
;pause=0 or play=1: to continue playback;
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;filepos=sec : go to time or percent specifed, maybe not works if mplayer is not support seeking for the current file;
 
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;framestep=anything : show next frame and pause (for step-by-step view);
 
 
;run=1: to start player again if it was terminated (by error or end of file);
 
;run=1: to start player again if it was terminated (by error or end of file);
 
;run=0: to terminate player;
 
;run=0: to terminate player;
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:;save=auto: not to ask if user sets it in dialog
 
:;save=auto: not to ask if user sets it in dialog
  
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=== Status variables ===
+
== Status variables ==
 
This the output from mplayer or mencoder.
 
This the output from mplayer or mencoder.
 
Now strings simply are split into two parts on the first of the symbols '=' or ':'.
 
Now strings simply are split into two parts on the first of the symbols '=' or ':'.
Line 47: Line 28:
 
;frame: the message from mplayer/mencoder about the last frame;
 
;frame: the message from mplayer/mencoder about the last frame;
 
;error: last error message;
 
;error: last error message;
−
;FATAL: fatal error message from mplayer;
 
 
Other variables are possible but they are not used as yet.
 
Other variables are possible but they are not used as yet.
 
;run: special variable, the state of player process: 0 - not running, 1 - running;
 
;run: special variable, the state of player process: 0 - not running, 1 - running;
 
;pause, play: it is analogous - the pause state.
 
;pause, play: it is analogous - the pause state.
  
−
=== Callback functions ===
+
== Callback functions ==
 
On the arrival of data from a player it is transferred to the object variables and it becomes accessible from javascript.
 
On the arrival of data from a player it is transferred to the object variables and it becomes accessible from javascript.
 
In this case if it is assigned the function with the corresponding name "on<variable_name>" will be called.  
 
In this case if it is assigned the function with the corresponding name "on<variable_name>" will be called.  
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*ElphelOgm - for receiving pure multicast or unicast rtp with mjpeg video.
 
*ElphelOgm - for receiving pure multicast or unicast rtp with mjpeg video.
  
−
For ElphelOgm to be used, the mime-type must be <strong>application/x-elphel-ogm</strong> or begin with <strong>video/m</strong> and the URL must be specifed as:
+
For ElphelOgm to be used, the mime-type must begin with <strong>video/m</strong> and the URL must be specifed as:
 
<strong>rtp://ip:port/</strong> ,
 
<strong>rtp://ip:port/</strong> ,
 
where:
 
where:
 
;ip -: the stream multicast ip  
 
;ip -: the stream multicast ip  
 
;port -: the stream multicast port
 
;port -: the stream multicast port
−
For a unicast the destination i.e. client ip:port must be specifed
+
For a unicast destination i.e. client ip:port must be specifed
 
and a stream server must be programmed to continuously send the stream to this address and port.
 
and a stream server must be programmed to continuously send the stream to this address and port.
 
Dynamic changing of the URL is not yet supported for RTP. Instead use the sequence: <code>obj.run=0; obj.src=...; obj.run=1;</code>
 
Dynamic changing of the URL is not yet supported for RTP. Instead use the sequence: <code>obj.run=0; obj.src=...; obj.run=1;</code>
−
 
−
== Trouble shooting ==
 
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Run the script <strong>mplayer.pl</strong> from a command line. It is located in /usr/lib/genres.
 
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If all necessary perl modules are installed, it must print several strings in the form: "variable=value" and wait input.
 
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If you see message "Can't locate Gtk2.pm in @INC" this mean that need to install this module from your distro or from [http://cpan.org CPAN].
 
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Other links: [http://gtk2-perl.sourceforge.net/ gtk2-perl home page], [http://cpan.org/modules/by-category/08_User_Interfaces/Gtk2/ gtk2-perl on CPAN], [http://freshmeat.net/projects/gtk2-perl/ gtk2-perl on freshmeat].
 
−
 
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Enter parameters as they presented in the html tag, but by one in line and add run=1 at the end. For example:
 
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type=video/mjpeg
 
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url=rtp://232.168.0.9:20000/
 
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run=1
 
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If MPlayer is running then this part works, try to see example html page in the browser (mozilla or firefox).
 
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If you don't see video in the browser, but instead see a gray rectangle, maybe the page has wrong url.
 
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See the list of installed plugins with url: <strong>about:plugins</strong> and if there is no GenReS, maybe genres.so is in a wrong place.
 
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The plugin produce debug output. Start mozilla or firefox with redirection to a file:
 
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mozilla -debug >& moz.log
 
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For firefox <strong>-debug</strong> is not need.
 
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Gzip and send this file to me to research.
 
−
 
−
--[[User:Khlut|Sergey Khlutchin]] 01:55, 8 February 2006 (CST)
 

Revision as of 11:45, 30 April 2006

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Project Pages

Static tag parameters

lowres
decimation for accelerated DCT (0-3);
width
width of the object window;
loop
number of iterations of the playback (0 or nothing is infinite);
fps
frame frequency;

Dynamic variables (can also be used as the parameters of tags)

href
url of the file or stream;
src
as yet simply another name for href.
pause=1 or play=0
to pause player;
pause=0 or play=1
to continue playback;
run=1
to start player again if it was terminated (by error or end of file);
run=0
to terminate player;
save
to run mencoder or ElphelOgm as recorder instead of mplayer;
save=ask
to always ask the file name for recording;
save=auto
not to ask if user sets it in dialog

Status variables

This the output from mplayer or mencoder. Now strings simply are split into two parts on the first of the symbols '=' or ':'. The left part becomes a name of the variable (gaps and nonlatin letters are removed) and the right part is a value.

frame
the message from mplayer/mencoder about the last frame;
error
last error message;

Other variables are possible but they are not used as yet.

run
special variable, the state of player process: 0 - not running, 1 - running;
pause, play
it is analogous - the pause state.

Callback functions

On the arrival of data from a player it is transferred to the object variables and it becomes accessible from javascript. In this case if it is assigned the function with the corresponding name "on<variable_name>" will be called.

onrun
will be called on starting and stopping of playing or recording processes;
onerror
on error message;
onframe
on each frame playing.
onmousedown and other standard callbacks
are given already by the browser and do not need extra code inside the plugin.

Back-end programs

Currently used:

  • mplayer (compiled with live555)
  • mencoder from mplayer package
  • ElphelOgm - for receiving pure multicast or unicast rtp with mjpeg video.

For ElphelOgm to be used, the mime-type must begin with video/m and the URL must be specifed as: rtp://ip:port/ , where:

ip -
the stream multicast ip
port -
the stream multicast port

For a unicast destination i.e. client ip:port must be specifed and a stream server must be programmed to continuously send the stream to this address and port. Dynamic changing of the URL is not yet supported for RTP. Instead use the sequence: obj.run=0; obj.src=...; obj.run=1;

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