Pal Szasz wrote:
> Hi!
>
> I'm writing a small plugin to play karaoke files (cdg) using pykaraoke
> (pycdg) from inside freevo.
> So far I got this (please note that I'm not a python developer):
>
> --------8<--------
> import config, plugin, os, re
> from event import *
>
> class PluginInterface(plugin.ItemPlugin):
> """
> This plugin should add an option to play the CDG karaoke file if present.
>
> Activate with:
> | plugin.activate('audio.karaoke')
>
> """
>
> def __init__(self):
> plugin.ItemPlugin.__init__(self)
>
> def actions(self, item):
>
> if item.type == 'audio':
>
> self.file = None
> self.item = item
> self.cdgname = ""
> self.files = item.files.get()
>
> if (len(self.files) != 1):
> return []
>
> self.file = self.files[0]
>
> # now check if there is a matching CDG file
> self.cdgname = re.sub('.mp3', '.cdg', self.file)
>
> if os.path.exists(self.cdgname):
> return [ ( self.play_cdg , _('Karaoke')) ]
>
> return []
>
> def play_cdg(self, arg=None, menuw=None):
> cmd = "pycdg -f \"" + self.cdgname + "\""
> os.system(cmd)
> --------8<--------
>
> So far so good: in the submenu of mp3 files there will be a new item,
> "karaoke", if a cdg file exists with the same basename. When the user
> selects this menu item, the plugin will simply launch pycdg. However
> it would be really usefull to control pycdg. Since I haven't saw any
> slave-mode support, I was thinking of implementing just the EXIT and
> STOP events, by simply killing the pycdg process... however I have no
> idea how to do that :-(. Any suggestions?
The best way is to look at some code that does something similar to what
you want. For an audio player, mplayer is a good bet
(src/audio/plugins/mplayer.py).
What happens is that there is a control class derived from ChildApp. The
stop event will send a quit command to the application if the
application doesn't have a slave mode then childapp will kill the
application.
Since pykaraoke is a python application you could ask the author for
some remote control features.
HTH
Duncan
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