config.py

   1 import ConfigParser, os, sys
   2 import re
   3 import random
   4 import string
   5 from ConfigParser import NoOptionError
   6
   7 BLACKLIST_169 = ('540', '649')
   8 guid = ''.join([random.choice(string.letters) for i in range(10)])
   9
  10 config = ConfigParser.ConfigParser()
  11 p = os.path.dirname(__file__)
  12
  13 config_files = [
  14     '/etc/pyTivo.conf',
  15     os.path.join(p, 'pyTivo.conf'),
  16 ]
  17 config_exists = False
  18 for config_file in config_files:
  19     if  os.path.exists(config_file):
  20         config_exists = True
  21 if not config_exists:
  22     print 'ERROR:  pyTivo.conf does not exist.\n' + \
  23           'You must create this file before running pyTivo.'
  24     sys.exit(1)
  25 config.read(config_files)
  26
  27 def reset():
  28     global config
  29     del config
  30     config = ConfigParser.ConfigParser()
  31     config.read(config_files)
  32
  33 def getGUID():
  34     if config.has_option('Server', 'GUID'):
  35         return config.get('Server', 'GUID')
  36     else:
  37         return guid
  38
  39 def getTivoUsername():
  40     return config.get('Server', 'tivo_username')
  41
  42 def getTivoPassword():
  43     return config.get('Server', 'tivo_password')
  44
  45 def getBeaconAddresses():
  46     if config.has_option('Server', 'beacon'):
  47         beacon_ips = config.get('Server', 'beacon')
  48     else:
  49         beacon_ips = '255.255.255.255'
  50     return beacon_ips
  51
  52 def getPort():
  53     return config.get('Server', 'Port')
  54
  55 def get169Blacklist(tsn):  # tivo does not pad 16:9 video
  56     return tsn != '' and tsn[:3] in ('540')
  57
  58 def get169Letterbox(tsn):  # tivo pads 16:9 video for 4:3 display
  59     return tsn != '' and tsn[:3] in ('649')
  60
  61 def get169Setting(tsn):
  62     if not tsn:
  63         return True
  64
  65     if config.has_section('_tivo_' + tsn):
  66         if config.has_option('_tivo_' + tsn, 'aspect169'):
  67             try:
  68                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  69             except ValueError:
  70                 pass
  71
  72     if get169Blacklist(tsn) or get169Letterbox(tsn):
  73         return False
  74
  75     return True
  76
  77 def getShares(tsn=''):
  78     shares = [(section, dict(config.items(section)))
  79                 for section in config.sections()
  80                 if not (
  81                     section.startswith('_tivo_')
  82                     or section in ('Server', 'loggers', 'handlers', 'formatters')
  83                     or section.startswith('logger_')
  84                     or section.startswith('handler_')
  85                     or section.startswith('formatter_')
  86                 )
  87     ]
  88
  89     if config.has_section('_tivo_' + tsn):
  90         if config.has_option('_tivo_' + tsn, 'shares'):
  91             # clean up leading and trailing spaces & make sure ref is valid
  92             tsnshares = []
  93             for x in config.get('_tivo_' + tsn, 'shares').split(','):
  94                 y = x.lstrip().rstrip()
  95                 if config.has_section(y):
  96                     tsnshares += [(y, dict(config.items(y)))]
  97             if tsnshares:
  98                 shares = tsnshares
  99
 100     for name, data in shares:
 101         if not data.get('auto_subshares', 'False').lower() == 'true':
 102             continue
 103
 104         base_path = data['path']
 105         try:
 106             for item in os.listdir(base_path):
 107                 item_path = os.path.join(base_path, item)
 108                 if not os.path.isdir(item_path) or item.startswith('.'):
 109                     continue
 110
 111                 new_name = name + '/' + item
 112                 new_data = dict(data)
 113                 new_data['path'] = item_path
 114
 115                 shares.append((new_name, new_data))
 116         except:
 117             pass
 118
 119     return shares
 120
 121 def getDebug(ref):
 122     if config.has_option('Server', 'debug'):
 123         try:
 124             return str2tuple(config.get('Server', 'debug')+',,')[ref]
 125         except NoOptionError:
 126             pass
 127     return str2tuple('False,,')[ref]
 128
 129 def getHack83():
 130     try:
 131         debug = config.get('Server', 'hack83')
 132         if debug.lower() == 'true':
 133             return True
 134         else:
 135             return False
 136     except NoOptionError:
 137         return False
 138
 139 def getOptres(tsn = None):
 140     if tsn and config.has_section('_tivo_' + tsn):
 141         try:
 142             return config.getboolean('_tivo_' + tsn, 'optres')
 143         except NoOptionError, ValueError:
 144             pass
 145     try:
 146         return config.getboolean('Server', 'optres')
 147     except NoOptionError, ValueError:
 148         return False
 149
 150 def getPixelAR(ref):
 151     if config.has_option('Server', 'par'):
 152         try:
 153             return (True, config.getfloat('Server', 'par'))[ref]
 154         except NoOptionError, ValueError:
 155             pass
 156     return (False, 1.0)[ref]
 157
 158 def get(section, key):
 159     return config.get(section, key)
 160
 161 def getFFmpegTemplate(tsn):
 162     if tsn and config.has_section('_tivo_' + tsn):
 163         try:
 164             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 165         except NoOptionError:
 166             pass
 167     try:
 168         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 169     except NoOptionError: #default
 170         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 171                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 172                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(ffmpeg_pram)s %(format)s'
 173
 174 def getFFmpegPrams(tsn):
 175     if tsn and config.has_section('_tivo_' + tsn):
 176         try:
 177             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 178         except NoOptionError:
 179             pass
 180     try:
 181         return config.get('Server', 'ffmpeg_pram', raw=True)
 182     except NoOptionError:
 183         return None
 184
 185 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 186     return tsn != '' and tsn[:3] in ['648', '652']
 187
 188 def getValidWidths():
 189     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 190
 191 def getValidHeights():
 192     return [1080, 720, 480] # Technically 240 is also supported
 193
 194 # Return the number in list that is nearest to x
 195 # if two values are equidistant, return the larger
 196 def nearest(x, list):
 197     return reduce(lambda a, b: closest(x, a, b), list)
 198
 199 def closest(x, a, b):
 200     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 201         return a
 202     else:
 203         return b
 204
 205 def nearestTivoHeight(height):
 206     return nearest(height, getValidHeights())
 207
 208 def nearestTivoWidth(width):
 209     return nearest(width, getValidWidths())
 210
 211 def getTivoHeight(tsn):
 212     if tsn and config.has_section('_tivo_' + tsn):
 213         try:
 214             height = config.getint('_tivo_' + tsn, 'height')
 215             return nearestTivoHeight(height)
 216         except NoOptionError:
 217             pass
 218     try:
 219         height = config.getint('Server', 'height')
 220         return nearestTivoHeight(height)
 221     except NoOptionError: #defaults for S3/S2 TiVo
 222         if isHDtivo(tsn):
 223             return 720
 224         else:
 225             return 480
 226
 227 def getTivoWidth(tsn):
 228     if tsn and config.has_section('_tivo_' + tsn):
 229         try:
 230             width = config.getint('_tivo_' + tsn, 'width')
 231             return nearestTivoWidth(width)
 232         except NoOptionError:
 233             pass
 234     try:
 235         width = config.getint('Server', 'width')
 236         return nearestTivoWidth(width)
 237     except NoOptionError: #defaults for S3/S2 TiVo
 238         if isHDtivo(tsn):
 239             return 1280
 240         else:
 241             return 544
 242
 243 def getAudioBR(tsn = None):
 244     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 245     #compare audio_br to max_audio_br and return lowest
 246     if tsn and config.has_section('_tivo_' + tsn):
 247         try:
 248             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 249             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 250         except NoOptionError:
 251             pass
 252     try:
 253         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 254         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 255     except NoOptionError:
 256         return str(min(384, getMaxAudioBR(tsn))) + 'k'
 257
 258 def getVideoBR(tsn = None):
 259     if tsn and config.has_section('_tivo_' + tsn):
 260         try:
 261             return config.get('_tivo_' + tsn, 'video_br')
 262         except NoOptionError:
 263             pass
 264     try:
 265         return config.get('Server', 'video_br')
 266     except NoOptionError: #defaults for S3/S2 TiVo
 267         if isHDtivo(tsn):
 268             return '8192k'
 269         else:
 270             return '4096K'
 271
 272 def getMaxVideoBR():
 273     try:
 274         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 275     except NoOptionError: #default to 30000k
 276         return '30000k'
 277
 278 def getVideoPCT():
 279     try:
 280         return config.getfloat('Server', 'video_pct')
 281     except NoOptionError:
 282         return 70
 283
 284 def getBuffSize():
 285     try:
 286         return str(int(strtod(config.get('Server', 'bufsize'))))
 287     except NoOptionError: #default 1024k
 288         return '1024k'
 289
 290 def getMaxAudioBR(tsn = None):
 291     #convert to non-zero multiple of 64 for ffmpeg compatibility
 292     if tsn and config.has_section('_tivo_' + tsn):
 293         try:
 294             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 295         except NoOptionError:
 296             pass
 297     try:
 298         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 299     except NoOptionError:
 300         return int(448) #default to 448
 301
 302 def getAudioCodec(tsn = None):
 303     if tsn and config.has_section('_tivo_' + tsn):
 304         try:
 305             return config.get('_tivo_' + tsn, 'audio_codec')
 306         except NoOptionError:
 307             pass
 308     try:
 309         return config.get('Server', 'audio_codec')
 310     except NoOptionError:
 311         return None
 312
 313 def getAudioCH(tsn = None):
 314     if tsn and config.has_section('_tivo_' + tsn):
 315         try:
 316             return config.get('_tivo_' + tsn, 'audio_ch')
 317         except NoOptionError:
 318             pass
 319     try:
 320         return config.get('Server', 'audio_ch')
 321     except NoOptionError:
 322         return None
 323
 324 def getAudioFR(tsn = None):
 325     if tsn and config.has_section('_tivo_' + tsn):
 326         try:
 327             return config.get('_tivo_' + tsn, 'audio_fr')
 328         except NoOptionError:
 329             pass
 330     try:
 331         return config.get('Server', 'audio_fr')
 332     except NoOptionError:
 333         return None
 334
 335 def getCopyTS(tsn = None):
 336     if tsn and config.has_section('_tivo_' + tsn):
 337         if config.has_option('_tivo_' + tsn, 'copy_ts'):
 338             try:
 339                 return config.get('_tivo_' + tsn, 'copy_ts')
 340             except NoOptionError, ValueError:
 341                 pass
 342     if config.has_option('Server', 'copy_ts'):
 343         try:
 344             return config.get('Server', 'copy_ts')
 345         except NoOptionError, ValueError:
 346             pass
 347     return 'none'
 348
 349 def getVideoFPS(tsn = None):
 350     if tsn and config.has_section('_tivo_' + tsn):
 351         try:
 352             return config.get('_tivo_' + tsn, 'video_fps')
 353         except NoOptionError:
 354             pass
 355     try:
 356         return config.get('Server', 'video_fps')
 357     except NoOptionError:
 358         return None
 359
 360 def getVideoCodec(tsn = None):
 361     if tsn and config.has_section('_tivo_' + tsn):
 362         try:
 363             return config.get('_tivo_' + tsn, 'video_codec')
 364         except NoOptionError:
 365             pass
 366     try:
 367         return config.get('Server', 'video_codec')
 368     except NoOptionError:
 369         return None
 370
 371 def getFormat(tsn = None):
 372     if tsn and config.has_section('_tivo_' + tsn):
 373         try:
 374             return config.get('_tivo_' + tsn, 'force_format')
 375         except NoOptionError:
 376             pass
 377     try:
 378         return config.get('Server', 'force_format')
 379     except NoOptionError:
 380         return None
 381
 382 def str2tuple(s):
 383     items = s.split(',')
 384     L = [x.strip() for x in items]
 385     return tuple(L)
 386
 387 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 388 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 389 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 390 def strtod(value):
 391     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 392                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 393                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 394                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 395     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 396     m = p.match(value)
 397     if m is None:
 398         raise SyntaxError('Invalid bit value syntax')
 399     (coef, prefix, power, byte) = m.groups()
 400     if prefix is None:
 401         value = float(coef)
 402     else:
 403         exponent = float(prefixes[prefix])
 404         if power == 'i':
 405             # Use powers of 2
 406             value = float(coef) * pow(2.0, exponent / 0.3)
 407         else:
 408             # Use powers of 10
 409             value = float(coef) * pow(10.0, exponent)
 410     if byte == 'B': # B == Byte, b == bit
 411         value *= 8;
 412     return value