Update of /cvsroot/freevo/freevo/src/tv
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv10563/src/tv
Modified Files:
channels.py
Log Message:
-Add functions for lockfile handling based on the device used.
-Convenience functions to retrieve settings based on channel id or name.
-Function to get the actual channel (tuner id) based on a channel id and
type (ie: tv0 or dvb1).
Index: channels.py
===================================================================
RCS file: /cvsroot/freevo/freevo/src/tv/channels.py,v
retrieving revision 1.24
retrieving revision 1.25
diff -C2 -d -r1.24 -r1.25
*** channels.py 14 Aug 2004 01:19:04 -0000 1.24
--- channels.py 23 Aug 2004 01:23:31 -0000 1.25
***************
*** 10,13 ****
--- 10,19 ----
# -----------------------------------------------------------------------
# $Log$
+ # Revision 1.25 2004/08/23 01:23:31 rshortt
+ # -Add functions for lockfile handling based on the device used.
+ # -Convenience functions to retrieve settings based on channel id or name.
+ # -Function to get the actual channel (tuner id) based on a channel id and
+ # type (ie: tv0 or dvb1).
+ #
# Revision 1.24 2004/08/14 01:19:04 rshortt
# Add a simple but effective memory cache.
***************
*** 72,75 ****
--- 78,82 ----
import stat
import string
+ import traceback
import config
***************
*** 82,106 ****
_channels_cache = None
def get_channels():
global _channels_cache
pickle = os.path.join(config.FREEVO_CACHEDIR, 'epg')
if not _channels_cache:
_debug_('no epg in memory, caching')
! _channels_cache = ChannelList()
elif not os.path.isfile(pickle):
_debug_('no epg "%s", will try to rebuild' % pickle)
! _channels_cache = ChannelList()
elif os.stat(pickle)[stat.ST_MTIME] > _channels_cache.load_time:
_debug_('epg newer than memory cache, reloading')
_channels_cache = ChannelList()
return _channels_cache
class Channel:
--- 89,227 ----
+ DEBUG = config.DEBUG
+
_channels_cache = None
def get_channels():
global _channels_cache
+ reload = False
pickle = os.path.join(config.FREEVO_CACHEDIR, 'epg')
if not _channels_cache:
_debug_('no epg in memory, caching')
! reload = True
elif not os.path.isfile(pickle):
_debug_('no epg "%s", will try to rebuild' % pickle)
! reload = True
elif os.stat(pickle)[stat.ST_MTIME] > _channels_cache.load_time:
_debug_('epg newer than memory cache, reloading')
+ reload = True
+
+ if reload:
+ if DEBUG:
+ stime = time.time()
_channels_cache = ChannelList()
+ if DEBUG:
+ _debug_('epg load took %s seconds' % (time.time()-stime))
return _channels_cache
+ def get_settings_by_id(chan_id):
+ settings = []
+
+ for c in get_channels().get_all():
+ if c.id == chan_id:
+ for f in c.freq:
+ which = string.split(f, ':')[0]
+ settings.append(which)
+ return settings
+
+
+ def get_settings_by_name(chan_name):
+ settings = []
+
+ for c in get_channels().get_all():
+ if c.name == chan_id:
+ for f in c.freq:
+ which = string.split(f, ':')[0]
+ settings.append(which)
+ return settings
+
+
+ def get_lockfile(which):
+ # In this function we must figure out which device these settings use
+ # because we are allowed to have multiple settings for any particular
+ # device, usually for different inputs (tuner, composite, svideo).
+
+ dev_lock = False
+ settings = config.TV_SETTINGS.get(which)
+
+ if not settings:
+ _debug_('No settings for %s' % which)
+
+ if isinstance(settings, config.DVBCard):
+ dev = settings.adapter
+ dev_lock = True
+
+ elif isinstance(settings, config.TVCard):
+ dev = settings.vdev
+ dev_lock = True
+
+ else:
+ print 'Unknown settings for %s!! This could cause problems!' % which
+
+ if dev_lock:
+ lockfile = os.path.join(config.FREEVO_CACHEDIR, 'lock.%s' % \
+ string.replace(dev, os.sep, '_'))
+ else:
+ lockfile = os.path.join(config.FREEVO_CACHEDIR, 'lock.%s' % which)
+
+ _debug_('lockfile for %s is %s' % (which, lockfile))
+ return lockfile
+
+
+ def lock_device(which):
+ lockfile = get_lockfile(which)
+
+ if os.path.exists(lockfile):
+ return False
+
+ else:
+ try:
+ open(lockfile, 'w').close()
+ return True
+ except:
+ print 'ERROR: cannot open lockfile for %s' % which
+ traceback.print_exc()
+ return False
+
+
+ def unlock_device(which):
+ lockfile = get_lockfile(which)
+
+ if os.path.exists(lockfile):
+ try:
+ os.remove(lockfile)
+ return True
+ except:
+ print 'ERROR: cannot remove lockfile for %s' % which
+ traceback.print_exc()
+ return False
+
+ else:
+ return False
+
+
+ def is_locked(which):
+ lockfile = get_lockfile(which)
+
+ if os.path.exists(lockfile):
+ return True
+
+ else:
+ return False
+
+
+ def get_actual_channel(channel_id, which):
+
+ for chan in get_channels().get_all():
+ if chan.id == channel_id:
+ for f in chan.freq:
+ if string.split(f, ':')[0] == which:
+ return string.lstrip(f, '%s:' % which)
+
class Channel:
-------------------------------------------------------
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