config.py

   1 import ConfigParser
   2 import logging
   3 import logging.config
   4 import os
   5 import re
   6 import random
   7 import string
   8 import sys
   9 from ConfigParser import NoOptionError
  10
  11 guid = ''.join([random.choice(string.letters) for i in range(10)])
  12
  13 config = ConfigParser.ConfigParser()
  14
  15 p = os.path.dirname(__file__)
  16 config_files = ['/etc/pyTivo.conf', os.path.join(p, 'pyTivo.conf')]
  17
  18 configs_found = config.read(config_files)
  19 if not configs_found:
  20     print ('ERROR: pyTivo.conf does not exist.\n' +
  21            'You must create this file before running pyTivo.')
  22     sys.exit(1)
  23
  24 def reset():
  25     global config
  26     newconfig = ConfigParser.ConfigParser()
  27     newconfig.read(config_files)
  28     config = newconfig
  29
  30 def write():
  31     f = open(configs_found[-1], 'w')
  32     config.write(f)
  33     f.close()
  34
  35 if not config.has_section('_tivo_HD'):
  36     f = open(configs_found[-1], 'a')
  37     f.write('\n\n[_tivo_HD]'\
  38                      '\n# section for default video options applicable to all HD TiVos'\
  39                      '\n# see pyTivo Web Configuration for all available settings')
  40     f.close()
  41     reset()
  42
  43 if not config.has_section('_tivo_SD'):
  44     f = open(configs_found[-1], 'a')
  45     f.write('\n\n[_tivo_SD]'\
  46                      '\n# section for default video options applicable to all SD TiVos'\
  47                      '\n# see pyTivo Web Configuration for all available settings')
  48     f.close()
  49     reset()
  50
  51
  52 def getGUID():
  53     if config.has_option('Server', 'GUID'):
  54         return config.get('Server', 'GUID')
  55     else:
  56         return guid
  57
  58 def getTivoUsername():
  59     return config.get('Server', 'tivo_username')
  60
  61 def getTivoPassword():
  62     return config.get('Server', 'tivo_password')
  63
  64 def getBeaconAddresses():
  65     if config.has_option('Server', 'beacon'):
  66         beacon_ips = config.get('Server', 'beacon')
  67     else:
  68         beacon_ips = '255.255.255.255'
  69     return beacon_ips
  70
  71 def getPort():
  72     return config.get('Server', 'Port')
  73
  74 def get169Blacklist(tsn):  # tivo does not pad 16:9 video
  75     return tsn and not isHDtivo(tsn) and not get169Letterbox(tsn)
  76     # verified Blacklist Tivo's are ('130', '240', '540')
  77     # It is assumed all remaining non-HD and non-Letterbox tivos are Blacklist
  78
  79 def get169Letterbox(tsn):  # tivo pads 16:9 video for 4:3 display
  80     return tsn and tsn[:3] in ['649']
  81
  82 def get169Setting(tsn):
  83     if not tsn:
  84         return True
  85
  86     tsnsect = '_tivo_' + tsn
  87     if config.has_section(tsnsect):
  88         if config.has_option(tsnsect, 'aspect169'):
  89             try:
  90                 return config.getboolean(tsnsect, 'aspect169')
  91             except ValueError:
  92                 pass
  93
  94     if get169Blacklist(tsn) or get169Letterbox(tsn):
  95         return False
  96
  97     return True
  98
  99 def getShares(tsn=''):
 100     shares = [(section, dict(config.items(section)))
 101               for section in config.sections()
 102               if not (section.startswith('_tivo_')
 103                       or section.startswith('logger_')
 104                       or section.startswith('handler_')
 105                       or section.startswith('formatter_')
 106                       or section in ('Server', 'loggers', 'handlers',
 107                                      'formatters')
 108               )
 109     ]
 110
 111     tsnsect = '_tivo_' + tsn
 112     if config.has_section(tsnsect) and config.has_option(tsnsect, 'shares'):
 113         # clean up leading and trailing spaces & make sure ref is valid
 114         tsnshares = []
 115         for x in config.get(tsnsect, 'shares').split(','):
 116             y = x.strip()
 117             if config.has_section(y):
 118                 tsnshares.append((y, dict(config.items(y))))
 119         if tsnshares:
 120             shares = tsnshares
 121
 122     return shares
 123
 124 def getDebug():
 125     try:
 126         return config.getboolean('Server', 'debug')
 127     except NoOptionError, ValueError:
 128         return False
 129
 130 def getOptres(tsn=None):
 131     if tsn and config.has_section('_tivo_' + tsn):
 132         try:
 133             return config.getboolean('_tivo_' + tsn, 'optres')
 134         except NoOptionError, ValueError:
 135             pass
 136     if isHDtivo(tsn):
 137         try:
 138             return config.getboolean('_tivo_HD', 'optres')
 139         except NoOptionError, ValueError:
 140             return False
 141     else:
 142         try:
 143             return config.getboolean('_tivo_SD', 'optres')
 144         except NoOptionError, ValueError:
 145             return False
 146
 147 def getPixelAR(ref):
 148     if config.has_option('Server', 'par'):
 149         try:
 150             return (True, config.getfloat('Server', 'par'))[ref]
 151         except NoOptionError, ValueError:
 152             pass
 153     return (False, 1.0)[ref]
 154
 155 def get(section, key):
 156     return config.get(section, key)
 157
 158 def getFFmpegWait():
 159     if config.has_option('Server', 'ffmpeg_wait'):
 160         return max(int(float(config.get('Server', 'ffmpeg_wait'))), 1)
 161     else:
 162         return 10
 163
 164 def getFFmpegTemplate(tsn):
 165     if tsn and config.has_section('_tivo_' + tsn):
 166         try:
 167             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 168         except NoOptionError:
 169             pass
 170     if isHDtivo(tsn):
 171         try:
 172             return config.get('_tivo_HD', 'ffmpeg_tmpl', raw=True)
 173         except NoOptionError:
 174             pass
 175     else:
 176         try:
 177             return config.get('_tivo_SD', 'ffmpeg_tmpl', raw=True)
 178         except NoOptionError:
 179             pass
 180     try:
 181         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 182     except NoOptionError: #default
 183         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 184                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 185                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(audio_lang)s \
 186                 %(ffmpeg_pram)s %(format)s'
 187
 188 def getFFmpegPrams(tsn):
 189     if tsn and config.has_section('_tivo_' + tsn):
 190         try:
 191             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 192         except NoOptionError:
 193             pass
 194     if isHDtivo(tsn):
 195         try:
 196             return config.get('_tivo_HD', 'ffmpeg_pram', raw=True)
 197         except NoOptionError:
 198             pass
 199     else:
 200         try:
 201             return config.get('_tivo_SD', 'ffmpeg_pram', raw=True)
 202         except NoOptionError:
 203             pass
 204     try:
 205         return config.get('Server', 'ffmpeg_pram', raw=True)
 206     except NoOptionError:
 207         return None
 208
 209 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 210     return tsn and tsn[:3] in ['648', '652', '658']
 211
 212 def getValidWidths():
 213     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 214
 215 def getValidHeights():
 216     return [1080, 720, 480] # Technically 240 is also supported
 217
 218 # Return the number in list that is nearest to x
 219 # if two values are equidistant, return the larger
 220 def nearest(x, list):
 221     return reduce(lambda a, b: closest(x, a, b), list)
 222
 223 def closest(x, a, b):
 224     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 225         return a
 226     else:
 227         return b
 228
 229 def nearestTivoHeight(height):
 230     return nearest(height, getValidHeights())
 231
 232 def nearestTivoWidth(width):
 233     return nearest(width, getValidWidths())
 234
 235 def getTivoHeight(tsn):
 236     if tsn and config.has_section('_tivo_' + tsn):
 237         try:
 238             height = config.getint('_tivo_' + tsn, 'height')
 239             return nearestTivoHeight(height)
 240         except NoOptionError:
 241             pass
 242     if isHDtivo(tsn):
 243         try:
 244             height = config.getint('_tivo_HD', 'height')
 245             return nearestTivoHeight(height)
 246         except NoOptionError:
 247             return 720
 248     else:
 249         try:
 250             height = config.getint('_tivo_SD', 'height')
 251             return nearestTivoHeight(height)
 252         except NoOptionError:
 253             return 480
 254
 255 def getTivoWidth(tsn):
 256     if tsn and config.has_section('_tivo_' + tsn):
 257         try:
 258             width = config.getint('_tivo_' + tsn, 'width')
 259             return nearestTivoWidth(width)
 260         except NoOptionError:
 261             pass
 262     if isHDtivo(tsn):
 263         try:
 264             width = config.getint('_tivo_HD', 'width')
 265             return nearestTivoWidth(width)
 266         except NoOptionError:
 267             return 1280
 268     else:
 269         try:
 270             width = config.getint('_tivo_SD', 'width')
 271             return nearestTivoWidth(width)
 272         except NoOptionError:
 273             return 544
 274
 275 def _trunc64(i):
 276     return max(int(strtod(i)) / 64000, 1) * 64
 277
 278 def getAudioBR(tsn=None):
 279     # convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 280     # compare audio_br to max_audio_br and return lowest
 281     if tsn and config.has_section('_tivo_' + tsn):
 282         try:
 283             audiobr = _trunc64(config.get('_tivo_' + tsn, 'audio_br'))
 284             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 285         except NoOptionError:
 286             pass
 287     if isHDtivo(tsn):
 288         try:
 289             audiobr = _trunc64(config.get('_tivo_HD', 'audio_br'))
 290             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 291         except NoOptionError:
 292             pass
 293     else:
 294         try:
 295             audiobr = _trunc64(config.get('_tivo_SD', 'audio_br'))
 296             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 297         except NoOptionError:
 298             pass
 299     return str(min(384, getMaxAudioBR(tsn))) + 'k'
 300
 301 def _k(i):
 302     return str(int(strtod(i)) / 1000) + 'k'
 303
 304 def getVideoBR(tsn=None):
 305     if tsn and config.has_section('_tivo_' + tsn):
 306         try:
 307             return _k(config.get('_tivo_' + tsn, 'video_br'))
 308         except NoOptionError:
 309             pass
 310     if isHDtivo(tsn):
 311         try:
 312             return _k(config.get('_tivo_HD', 'video_br'))
 313         except NoOptionError:
 314             return '16384k'
 315     else:
 316         try:
 317             return _k(config.get('_tivo_SD', 'video_br'))
 318         except NoOptionError:
 319             return '4096K'
 320
 321 def getMaxVideoBR(tsn=None):
 322     if tsn and config.has_section('_tivo_' + tsn):
 323         try:
 324             return _k(config.get('_tivo_' + tsn, 'max_video_br'))
 325         except NoOptionError:
 326             pass
 327     if isHDtivo(tsn):
 328         try:
 329             return _k(config.get('_tivo_HD', 'max_video_br'))
 330         except NoOptionError:
 331             pass
 332     else:
 333         try:
 334             return _k(config.get('_tivo_SD', 'max_video_br'))
 335         except NoOptionError:
 336             pass
 337     return '30000k'
 338
 339 def getVideoPCT(tsn=None):
 340     if tsn and config.has_section('_tivo_' + tsn):
 341         try:
 342             return config.getfloat('_tivo_' + tsn, 'video_pct')
 343         except NoOptionError:
 344             pass
 345     if isHDtivo(tsn):
 346         try:
 347             return config.getfloat('_tivo_HD', 'video_pct')
 348         except NoOptionError:
 349             pass
 350     else:
 351         try:
 352             return config.getfloat('_tivo_SD', 'video_pct')
 353         except NoOptionError:
 354             pass
 355     return 85
 356
 357 def getBuffSize(tsn=None):
 358     tsnsect = '_tivo_' + tsn
 359     if tsn and config.has_section(tsnsect):
 360         if config.has_option(tsnsect, 'bufsize'):
 361             try:
 362                 return _k(config.get(tsnsect, 'bufsize'))
 363             except NoOptionError:
 364                 pass
 365     if isHDtivo(tsn):
 366         if config.has_option('_tivo_HD', 'bufsize'):
 367             try:
 368                 return _k(config.get('_tivo_HD', 'bufsize'))
 369             except NoOptionError:
 370                 pass
 371         return '4096k'
 372     else:
 373         if config.has_option('_tivo_SD', 'bufsize'):
 374             try:
 375                 return _k(config.get('_tivo_SD', 'bufsize'))
 376             except NoOptionError:
 377                 pass
 378         return '1024k'
 379
 380 def getMaxAudioBR(tsn=None):
 381     # convert to non-zero multiple of 64 for ffmpeg compatibility
 382     if tsn and config.has_section('_tivo_' + tsn):
 383         try:
 384             return _trunc64(config.get('_tivo_' + tsn, 'max_audio_br'))
 385         except NoOptionError:
 386             pass
 387     if isHDtivo(tsn):
 388         try:
 389             return _trunc64(config.get('_tivo_HD', 'max_audio_br'))
 390         except NoOptionError:
 391             pass
 392     else:
 393         try:
 394             return _trunc64(config.get('_tivo_SD', 'max_audio_br'))
 395         except NoOptionError:
 396             pass
 397     return int(448)
 398
 399 def get_tsn(name, tsn=None):
 400     if tsn and config.has_section('_tivo_' + tsn):
 401         try:
 402             return config.get('_tivo_' + tsn, name)
 403         except NoOptionError:
 404             pass
 405     if isHDtivo(tsn):
 406         try:
 407             return config.get('_tivo_HD', name)
 408         except NoOptionError:
 409             pass
 410     else:
 411         try:
 412             return config.get('_tivo_SD', name)
 413         except NoOptionError:
 414             pass
 415     return None
 416
 417 def getAudioCodec(tsn=None):
 418     return get_tsn('audio_codec', tsn)
 419
 420 def getAudioCH(tsn=None):
 421     return get_tsn('audio_ch', tsn)
 422
 423 def getAudioFR(tsn=None):
 424     return get_tsn('audio_fr', tsn)
 425
 426 def getAudioLang(tsn=None):
 427     return get_tsn('audio_lang', tsn)
 428
 429 def getCopyTS(tsn=None):
 430     return get_tsn('copy_ts', tsn)
 431
 432 def getVideoFPS(tsn=None):
 433     return get_tsn('video_fps', tsn)
 434
 435 def getVideoCodec(tsn=None):
 436     return get_tsn('video_codec', tsn)
 437
 438 def getFormat(tsn=None):
 439     return get_tsn('format', tsn)
 440
 441 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 442 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 443 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 444 def strtod(value):
 445     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 446                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 447                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 448                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 449     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 450     m = p.match(value)
 451     if not m:
 452         raise SyntaxError('Invalid bit value syntax')
 453     (coef, prefix, power, byte) = m.groups()
 454     if prefix is None:
 455         value = float(coef)
 456     else:
 457         exponent = float(prefixes[prefix])
 458         if power == 'i':
 459             # Use powers of 2
 460             value = float(coef) * pow(2.0, exponent / 0.3)
 461         else:
 462             # Use powers of 10
 463             value = float(coef) * pow(10.0, exponent)
 464     if byte == 'B': # B == Byte, b == bit
 465         value *= 8;
 466     return value
 467
 468 def init_logging():
 469     if (config.has_section('loggers') and
 470         config.has_section('handlers') and
 471         config.has_section('formatters')):
 472
 473         logging.config.fileConfig(config_files)
 474
 475     elif getDebug():
 476         logging.basicConfig(level=logging.DEBUG)
 477     else:
 478         logging.basicConfig(level=logging.INFO)