Update of /cvsroot/freevo/freevo/src/tv
In directory sc8-pr-cvs1:/tmp/cvs-serv12578/src/tv
Added Files:
channels.py
Log Message:
A new module to handle all of the channel requirements of Freevo from
one place. This will also be used as a layer between Freevo's channel
list, frequency table, and custom frequencies and childapps like mplayer
or tvtime.
This is not used by anything by default and requires further work.
--- NEW FILE: channels.py ---
#if 0 /*
# -----------------------------------------------------------------------
# channels.py - Freevo module to handle channel changing.
# -----------------------------------------------------------------------
# $Id: channels.py,v 1.1 2003/10/11 14:55:29 rshortt Exp $
#
# Notes:
# Todo:
#
# -----------------------------------------------------------------------
# $Log: channels.py,v $
# Revision 1.1 2003/10/11 14:55:29 rshortt
# A new module to handle all of the channel requirements of Freevo from
# one place. This will also be used as a layer between Freevo's channel
# list, frequency table, and custom frequencies and childapps like mplayer
# or tvtime.
#
# This is not used by anything by default and requires further work.
#
# Revision 1.2 2003/10/06 02:57:21 rshortt
# Almost in action...
#
# Revision 1.1 2003/09/19 02:22:20 rshortt
# thinking out loud
#
#
#
# -----------------------------------------------------------------------
# Freevo - A Home Theater PC framework
# Copyright (C) 2003 Krister Lagerstrom, et al.
# Please see the file freevo/Docs/CREDITS for a complete list of authors.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MER-
# CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ----------------------------------------------------------------------- */
#endif
import config, plugin
import tv.freq, tv.v4l2
DEBUG = config.DEBUG
# Sample from local_conf.py:
#VIDEO_GROUPS = [
# VideoGroup(vdev='/dev/video0',
# adev=None,
# input_type='tuner',
# tuner_type='external',
# tuner_chan='3',
# external_tuner='tv.irtrans-echostar',
# desc='Bell ExpressVu',
# recordable=True),
# VideoGroup(vdev='/dev/video1',
# adev='/dev/dsp1',
# input_type='tuner',
# desc='ATI TV-Wonder',
# recordable=True),
# VideoGroup(vdev='/dev/video2',
# adev=None,
# input_type='webcam',
# desc='Logitech Quickcam',
# recordable=False),
#]
class FreevoChannels:
def __init__(self):
# XXX: soon make TV_CHANNELS a list of real objects instead of a
# list of lists.
# self.TV_CHANNELS = the lists of objects or something
self.chan_index = 0
# XXX: Make sure plugin won't allow you to init any plugin
# more than once. Also it might be better to move
# this init line into the recordserver since in the TV
# interface it will already be initialized in main.
plugin.init_special_plugin(config.plugin_external_tuner)
def getVideoGroup(self, chan):
"""
Gets the VideoGroup object used by this Freevo channel.
"""
group = 0
for i in range(len(config.TV_CHANNELS)):
chan_info = config.TV_CHANNELS[i]
if chan_info[2] == chan:
try:
group = chan_info[3]
except:
# XXX: put a better exception here
group = 0
return config.VIDEO_GROUPS[group]
def chanUp(self, app=None, app_cmd=None):
"""
Using this method will not support custom frequencies.
"""
self.chanSet(self.getNextChannel(), app, app_cmd)
def chanDown(self, app=None, app_cmd=None):
"""
Using this method will not support custom frequencies.
"""
self.setChannel(self.getPrevChannel(), app, app_cmd)
def chanSet(self, chan, app=None, app_cmd=None):
new_chan = None
for pos in range(len(config.TV_CHANNELS)):
chan_cfg = config.TV_CHANNELS[pos]
if chan_cfg[2] == chan:
new_chan = chan
self.chan_index = pos
if not new_chan:
print 'ERROR: Cannot find tuner channel "%s" in the TV channel listing' %
chan
return
vg = self.getVideoGroup(new_chan)
if vg.tuner_type == 'external':
if vg.input_type == 'tuner' and vg.tuner_chan:
self.tunerSetFreq(vg.tuner_chan, app, app_cmd)
tuner = plugin.getbyname('EXTERNAL_TUNER')
tuner.setChannel(new_chan)
else:
self.tunerSetFreq(chan, app, app_cmd)
def tunerSetFreq(self, chan, app=None, app_cmd=None):
vg = self.getVideoGroup(chan)
freq = config.FREQUENCY_TABLE.get(chan)
if freq:
if DEBUG:
print 'USING CUSTOM FREQUENCY: chan="%s", freq="%s"' % \
(chan, freq)
else:
# freq = self.chanlist[str(chan)]
freq = tv.freq.CHANLIST[vg.tuner_chanlist][str(chan)]
if DEBUG:
print 'USING STANDARD FREQUENCY: chan="%s", freq="%s"' % \
(chan, freq)
# XXX: add code here for TUNER_LOW capability, the last time that I
# half-heartedly tried this it din't work as expected.
freq *= 16
freq /= 1000
if app and app_cmd:
self.appSend(app, app_cmd)
else:
try:
vd = tv.v4l2.Videodev(vg.vdev)
try:
vd.setfreq(freq)
except:
vd.setfreq_old(freq)
vd.close()
except:
print 'Failed to set freq for channel %s' % chan
def getChannel(self):
return config.TV_CHANNELS[self.chan_index][2]
def getNextChannel(self):
return config.TV_CHANNELS[(self.chan_index+1) % len(config.TV_CHANNELS)][2]
def getPrevChannel(self):
return (self.chan_index-1) % len(config.TV_CHANNELS)
def setChanlist(self, chanlist):
self.chanlist = freq.CHANLIST[chanlist]
def appSend(self, app, app_cmd):
if not app or not app_cmd:
return
app.write(app_cmd)
# fc = FreevoChannels()
# print 'CHAN: %s' % fc.getChannel()
# fc.chanSet('780')
# print 'CHAN: %s' % fc.getChannel()
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