config.py

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