config.py

   1 import ConfigParser, os
   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 config_files = [
  13     '/etc/pyTivo.conf',
  14     os.path.join(p, 'pyTivo.conf'),
  15 ]
  16 config.read(config_files)
  17
  18 def reset():
  19     global config
  20     del config
  21     config = ConfigParser.ConfigParser()
  22     config.read(config_file)
  23
  24 def getGUID():
  25     if config.has_option('Server', 'GUID'):
  26         return config.get('Server', 'GUID')
  27     else:
  28         return guid
  29
  30 def getTivoUsername():
  31     return config.get('Server', 'tivo_username')
  32
  33 def getTivoPassword():
  34     return config.get('Server', 'tivo_password')
  35
  36 def getBeaconAddresses():
  37     if config.has_option('Server', 'beacon'):
  38         beacon_ips = config.get('Server', 'beacon')
  39     else:
  40         beacon_ips = '255.255.255.255'
  41     return beacon_ips
  42
  43 def getPort():
  44     return config.get('Server', 'Port')
  45
  46 def get169Setting(tsn):
  47     if not tsn:
  48         return True
  49
  50     if config.has_section('_tivo_' + tsn):
  51         if config.has_option('_tivo_' + tsn, 'aspect169'):
  52             try:
  53                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  54             except ValueError:
  55                 pass
  56
  57     if tsn[:3] in BLACKLIST_169:
  58         return False
  59
  60     return True
  61
  62 def getShares(tsn=''):
  63     shares = [(section, dict(config.items(section)))
  64                 for section in config.sections()
  65                 if not (
  66                     section.startswith('_tivo_')
  67                     or section in ('Server', 'loggers', 'handlers', 'formatters')
  68                     or section.startswith('logger_')
  69                     or section.startswith('handler_')
  70                     or section.startswith('formatter_')
  71                 )
  72     ]
  73
  74     if config.has_section('_tivo_' + tsn):
  75         if config.has_option('_tivo_' + tsn, 'shares'):
  76             # clean up leading and trailing spaces & make sure ref is valid
  77             tsnshares = []
  78             for x in config.get('_tivo_' + tsn, 'shares').split(','):
  79                 y = x.lstrip().rstrip()
  80                 if config.has_section(y):
  81                     tsnshares += [(y, dict(config.items(y)))]
  82             if tsnshares:
  83                 shares = tsnshares
  84
  85     for name, data in shares:
  86         if not data.get('auto_subshares', 'False').lower() == 'true':
  87             continue
  88
  89         base_path = data['path']
  90         try:
  91             for item in os.listdir(base_path):
  92                 item_path = os.path.join(base_path, item)
  93                 if not os.path.isdir(item_path):
  94                     continue
  95
  96                 new_name = name + '/' + item
  97                 new_data = dict(data)
  98                 new_data['path'] = item_path
  99
 100                 shares.append((new_name, new_data))
 101         except:
 102             pass
 103
 104     return shares
 105
 106 def getDebug(ref):
 107     if config.has_option('Server', 'debug'):
 108         try:
 109             return str2tuple(config.get('Server', 'debug')+',,')[ref]
 110         except NoOptionError:
 111             pass
 112     return str2tuple('False,,')[ref]
 113
 114 def getHack83():
 115     try:
 116         debug = config.get('Server', 'hack83')
 117         if debug.lower() == 'true':
 118             return True
 119         else:
 120             return False
 121     except NoOptionError:
 122         return False
 123
 124 def getOptres(tsn = None):
 125     if tsn and config.has_section('_tivo_' + tsn):
 126         try:
 127             return config.getboolean('_tivo_' + tsn, 'optres')
 128         except NoOptionError, ValueError:
 129             pass
 130     try:
 131         return config.getboolean('Server', 'optres')
 132     except NoOptionError, ValueError:
 133         return False
 134
 135 def getPixelAR(ref):
 136     if config.has_option('Server', 'par'):
 137         try:
 138             return (True, config.getfloat('Server', 'par'))[ref]
 139         except NoOptionError, ValueError:
 140             pass
 141     return (False, 1.0)[ref]
 142
 143 def get(section, key):
 144     return config.get(section, key)
 145
 146 def getFFmpegTemplate(tsn):
 147     if tsn and config.has_section('_tivo_' + tsn):
 148         try:
 149             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 150         except NoOptionError:
 151             pass
 152     try:
 153         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 154     except NoOptionError: #default
 155         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 156                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 157                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(ffmpeg_pram)s %(format)s'
 158
 159 def getFFmpegPrams(tsn):
 160     if tsn and config.has_section('_tivo_' + tsn):
 161         try:
 162             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 163         except NoOptionError:
 164             pass
 165     try:
 166         return config.get('Server', 'ffmpeg_pram', raw=True)
 167     except NoOptionError:
 168         return None
 169
 170 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 171     return tsn != '' and tsn[:3] in ['648', '652']
 172
 173 def getValidWidths():
 174     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 175
 176 def getValidHeights():
 177     return [1080, 720, 480] # Technically 240 is also supported
 178
 179 # Return the number in list that is nearest to x
 180 # if two values are equidistant, return the larger
 181 def nearest(x, list):
 182     return reduce(lambda a, b: closest(x, a, b), list)
 183
 184 def closest(x, a, b):
 185     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 186         return a
 187     else:
 188         return b
 189
 190 def nearestTivoHeight(height):
 191     return nearest(height, getValidHeights())
 192
 193 def nearestTivoWidth(width):
 194     return nearest(width, getValidWidths())
 195
 196 def getTivoHeight(tsn):
 197     if tsn and config.has_section('_tivo_' + tsn):
 198         try:
 199             height = config.getint('_tivo_' + tsn, 'height')
 200             return nearestTivoHeight(height)
 201         except NoOptionError:
 202             pass
 203     try:
 204         height = config.getint('Server', 'height')
 205         return nearestTivoHeight(height)
 206     except NoOptionError: #defaults for S3/S2 TiVo
 207         if isHDtivo(tsn):
 208             return 720
 209         else:
 210             return 480
 211
 212 def getTivoWidth(tsn):
 213     if tsn and config.has_section('_tivo_' + tsn):
 214         try:
 215             width = config.getint('_tivo_' + tsn, 'width')
 216             return nearestTivoWidth(width)
 217         except NoOptionError:
 218             pass
 219     try:
 220         width = config.getint('Server', 'width')
 221         return nearestTivoWidth(width)
 222     except NoOptionError: #defaults for S3/S2 TiVo
 223         if isHDtivo(tsn):
 224             return 1280
 225         else:
 226             return 544
 227
 228 def getAudioBR(tsn = None):
 229     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 230     #compare audio_br to max_audio_br and return lowest
 231     if tsn and config.has_section('_tivo_' + tsn):
 232         try:
 233             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 234             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 235         except NoOptionError:
 236             pass
 237     try:
 238         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 239         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 240     except NoOptionError:
 241         return str(min(384, getMaxAudioBR(tsn))) + 'k'
 242
 243 def getVideoBR(tsn = None):
 244     if tsn and config.has_section('_tivo_' + tsn):
 245         try:
 246             return config.get('_tivo_' + tsn, 'video_br')
 247         except NoOptionError:
 248             pass
 249     try:
 250         return config.get('Server', 'video_br')
 251     except NoOptionError: #defaults for S3/S2 TiVo
 252         if isHDtivo(tsn):
 253             return '8192k'
 254         else:
 255             return '4096K'
 256
 257 def getMaxVideoBR():
 258     try:
 259         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 260     except NoOptionError: #default to 17Mi
 261         return '17408k'
 262
 263 def getBuffSize():
 264     try:
 265         return str(int(strtod(config.get('Server', 'bufsize'))))
 266     except NoOptionError: #default 1024k
 267         return '1024k'
 268
 269 def getMaxAudioBR(tsn = None):
 270     #convert to non-zero multiple of 64 for ffmpeg compatibility
 271     if tsn and config.has_section('_tivo_' + tsn):
 272         try:
 273             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 274         except NoOptionError:
 275             pass
 276     try:
 277         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 278     except NoOptionError:
 279         return int(448) #default to 448
 280
 281 def getAudioCodec(tsn = None):
 282     if tsn and config.has_section('_tivo_' + tsn):
 283         try:
 284             return config.get('_tivo_' + tsn, 'audio_codec')
 285         except NoOptionError:
 286             pass
 287     try:
 288         return config.get('Server', 'audio_codec')
 289     except NoOptionError:
 290         return None
 291
 292 def getAudioCH(tsn = None):
 293     if tsn and config.has_section('_tivo_' + tsn):
 294         try:
 295             return config.get('_tivo_' + tsn, 'audio_ch')
 296         except NoOptionError:
 297             pass
 298     try:
 299         return config.get('Server', 'audio_ch')
 300     except NoOptionError:
 301         return None
 302
 303 def getAudioFR(tsn = None):
 304     if tsn and config.has_section('_tivo_' + tsn):
 305         try:
 306             return config.get('_tivo_' + tsn, 'audio_fr')
 307         except NoOptionError:
 308             pass
 309     try:
 310         return config.get('Server', 'audio_fr')
 311     except NoOptionError:
 312         return None
 313
 314 def getVideoFPS(tsn = None):
 315     if tsn and config.has_section('_tivo_' + tsn):
 316         try:
 317             return config.get('_tivo_' + tsn, 'video_fps')
 318         except NoOptionError:
 319             pass
 320     try:
 321         return config.get('Server', 'video_fps')
 322     except NoOptionError:
 323         return None
 324
 325 def getVideoCodec(tsn = None):
 326     if tsn and config.has_section('_tivo_' + tsn):
 327         try:
 328             return config.get('_tivo_' + tsn, 'video_codec')
 329         except NoOptionError:
 330             pass
 331     try:
 332         return config.get('Server', 'video_codec')
 333     except NoOptionError:
 334         return None
 335
 336 def getFormat(tsn = None):
 337     if tsn and config.has_section('_tivo_' + tsn):
 338         try:
 339             return config.get('_tivo_' + tsn, 'force_format')
 340         except NoOptionError:
 341             pass
 342     try:
 343         return config.get('Server', 'force_format')
 344     except NoOptionError:
 345         return None
 346
 347 def str2tuple(s):
 348     items = s.split(',')
 349     L = [x.strip() for x in items]
 350     return tuple(L)
 351
 352 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 353 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 354 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 355 def strtod(value):
 356     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 357                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 358                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 359                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 360     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 361     m = p.match(value)
 362     if m is None:
 363         raise SyntaxError('Invalid bit value syntax')
 364     (coef, prefix, power, byte) = m.groups()
 365     if prefix is None:
 366         value = float(coef)
 367     else:
 368         exponent = float(prefixes[prefix])
 369         if power == 'i':
 370             # Use powers of 2
 371             value = float(coef) * pow(2.0, exponent / 0.3)
 372         else:
 373             # Use powers of 10
 374             value = float(coef) * pow(10.0, exponent)
 375     if byte == 'B': # B == Byte, b == bit
 376         value *= 8;
 377     return value