config.py

   1 import ConfigParser, os
   2 import re
   3 from ConfigParser import NoOptionError
   4
   5 BLACKLIST_169 = ('540', '649')
   6
   7 config = ConfigParser.ConfigParser()
   8 p = os.path.dirname(__file__)
   9 config.read(os.path.join(p, 'pyTivo.conf'))
  10
  11 def getGUID():
  12     if config.has_option('Server', 'GUID'):
  13         guid = config.get('Server', 'GUID')
  14     else:
  15         guid = '123456'
  16     return guid
  17
  18 def getBeaconAddresses():
  19     if config.has_option('Server', 'beacon'):
  20         beacon_ips = config.get('Server', 'beacon')
  21     else:
  22         beacon_ips = '255.255.255.255'
  23     return beacon_ips
  24
  25 def getPort():
  26     return config.get('Server', 'Port')
  27
  28 def get169Setting(tsn):
  29     if not tsn:
  30         return True
  31
  32     if config.has_section('_tivo_' + tsn):
  33         if config.has_option('_tivo_' + tsn, 'aspect169'):
  34             try:
  35                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  36             except ValueError:
  37                 pass
  38
  39     if tsn[:3] in BLACKLIST_169:
  40         return False
  41
  42     return True
  43
  44 def getShares():
  45     shares = [ (section, dict(config.items(section))) for section in config.sections() if not(section.startswith('_tivo_') or section == 'Server') ]
  46
  47     for name, data in shares:
  48         if not data.get('auto_subshares', 'False').lower() == 'true':
  49             continue
  50
  51         base_path = data['path']
  52         for item in os.listdir(base_path):
  53             item_path = os.path.join(base_path, item)
  54             if not os.path.isdir(item_path):
  55                 continue
  56
  57             new_name = name + '/' + item
  58             new_data = dict(data)
  59             new_data['path'] = item_path
  60
  61             shares.append( (new_name, new_data) )
  62
  63     return shares
  64
  65
  66 def getDebug():
  67     try:
  68         return config.getboolean('Server', 'debug')
  69     except NoOptionError, ValueError:
  70         return False
  71
  72 def getOptres():
  73     try:
  74         return config.getboolean('Server', 'optres')
  75     except NoOptionError, ValueError:
  76         return False
  77
  78 def get(section, key):
  79     return config.get(section, key)
  80
  81 def getFFMPEGTemplate(tsn):
  82     if tsn and config.has_section('_tivo_' + tsn):
  83         try:
  84             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
  85         except NoOptionError:
  86             pass
  87
  88     try:
  89         return config.get('Server', 'ffmpeg_prams', raw=True)
  90     except NoOptionError: #default
  91         return '-vcodec mpeg2video -r 29.97 -b %(video_br)s -maxrate %(max_video_br)s -bufsize %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_codec)s -ab %(audio_br)s -f vob -'
  92
  93 def getHDtivos():  # tsn's of High Definition Tivo's
  94     return ['648', '652']
  95
  96 def getValidWidths():
  97     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
  98
  99 def getValidHeights():
 100     return [1080, 720, 480] # Technically 240 is also supported
 101
 102 # Return the number in list that is nearest to x
 103 # if two values are equidistant, return the larger
 104 def nearest(x, list):
 105     return reduce(lambda a, b: closest(x,a,b), list)
 106
 107 def closest(x,a, b):
 108     if abs(x-a) < abs(x-b) or (abs(x-a) == abs(x-b)and a>b):
 109         return a
 110     else:
 111         return b
 112
 113 def nearestTivoHeight(height):
 114     return nearest(height, getValidHeights())
 115
 116 def nearestTivoWidth(width):
 117     return nearest(width, getValidWidths())
 118
 119 def getTivoHeight(tsn):
 120     if tsn and config.has_section('_tivo_' + tsn):
 121         try:
 122             height = config.getint('_tivo_' + tsn, 'height')
 123             return nearestTivoHeight(height)
 124         except NoOptionError:
 125             pass
 126
 127     try:
 128         height = config.getint('Server', 'height')
 129         return nearestTivoHeight(height)
 130     except NoOptionError: #default
 131         return 480
 132
 133 def getTivoWidth(tsn):
 134     if tsn and config.has_section('_tivo_' + tsn):
 135         try:
 136             width = config.getint('_tivo_' + tsn, 'width')
 137             return nearestTivoWidth(width)
 138         except NoOptionError:
 139             pass
 140
 141     try:
 142         width = config.getint('Server', 'width')
 143         return nearestTivoWidth(width)
 144     except NoOptionError: #default
 145         return 544
 146
 147 def getAudioBR(tsn = None):
 148     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 149     #compare audio_br to max_audio_br and return lowest
 150     if tsn and config.has_section('_tivo_' + tsn):
 151         try:
 152             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 153             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 154         except NoOptionError:
 155             pass
 156
 157     try:
 158         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 159         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 160     except NoOptionError: #default to 192
 161         return '192k'
 162
 163 def getAudioCodec(tsn = None):
 164     #check for HD tivo and return compatible audio parameters
 165     if tsn and tsn[:3] in getHDtivos():
 166         return '-acodec ac3 -ar 48000'
 167     else:
 168         return '-acodec mp2 -ac 2 -ar 44100'
 169
 170 def getVideoBR(tsn = None):
 171     if tsn and config.has_section('_tivo_' + tsn):
 172         try:
 173             return config.get('_tivo_' + tsn, 'video_br')
 174         except NoOptionError:
 175             pass
 176
 177     try:
 178         return config.get('Server', 'video_br')
 179     except NoOptionError: #default to 4096K
 180         return '4096K'
 181
 182 def getMaxVideoBR():
 183     try:
 184         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 185     except NoOptionError: #default to 17Mi
 186         return '17408k'
 187
 188 def getBuffSize():
 189     try:
 190         return config.get('Server', 'bufsize')
 191     except NoOptionError: #default 1024k
 192         return '1024k'
 193
 194 def getMaxAudioBR(tsn = None):
 195     #convert to non-zero multiple of 64 for ffmpeg compatibility
 196     if tsn and config.has_section('_tivo_' + tsn):
 197         try:
 198             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 199         except NoOptionError:
 200             pass
 201
 202     try:
 203         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 204     except NoOptionError:
 205         if tsn and tsn[:3] in getHDtivos():
 206             return int(448) #default to 448, max supported by HD TiVo's
 207         else:
 208             return int(384) #default to 384, max supported by mp2 audio (S2 TiVo)
 209
 210
 211 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 212 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 213 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 214 def strtod(value):
 215     prefixes = {"y":-24,"z":-21,"a":-18,"f":-15,"p":-12,"n":-9,"u":-6,"m":-3,"c":-2,"d":-1,"h":2,"k":3,"K":3,"M":6,"G":9,"T":12,"P":15,"E":18,"Z":21,"Y":24}
 216     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 217     m = p.match(value)
 218     if m is None:
 219         raise SyntaxError('Invalid bit value syntax')
 220     (coef, prefix, power, byte) = m.groups()
 221     if prefix is None:
 222         value = float(coef)
 223     else:
 224         exponent = float(prefixes[prefix])
 225         if power == "i":
 226             # Use powers of 2
 227             value = float(coef) * pow(2.0, exponent/0.3)
 228         else:
 229             # Use powers of 10
 230             value = float(coef) * pow(10.0, exponent)
 231     if byte == "B": # B==Byte, b=bit
 232         value *= 8;
 233     return value