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_file = os.path.join(p, 'pyTivo.conf')
  10 config.read(config_file)
  11
  12 def reset():
  13     global config
  14     del config
  15     config = ConfigParser.ConfigParser()
  16     config.read(config_file)
  17
  18 def getGUID():
  19     if config.has_option('Server', 'GUID'):
  20         guid = config.get('Server', 'GUID')
  21     else:
  22         guid = '123456'
  23     return guid
  24
  25 def getBeaconAddresses():
  26     if config.has_option('Server', 'beacon'):
  27         beacon_ips = config.get('Server', 'beacon')
  28     else:
  29         beacon_ips = '255.255.255.255'
  30     return beacon_ips
  31
  32 def getPort():
  33     return config.get('Server', 'Port')
  34
  35 def get169Setting(tsn):
  36     if not tsn:
  37         return True
  38
  39     if config.has_section('_tivo_' + tsn):
  40         if config.has_option('_tivo_' + tsn, 'aspect169'):
  41             try:
  42                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  43             except ValueError:
  44                 pass
  45
  46     if tsn[:3] in BLACKLIST_169:
  47         return False
  48
  49     return True
  50
  51 def getShares(tsn=''):
  52     shares = [(section, dict(config.items(section)))
  53               for section in config.sections()
  54               if not(section.startswith('_tivo_') or section == 'Server')]
  55
  56     if config.has_section('_tivo_' + tsn):
  57         if config.has_option('_tivo_' + tsn, 'shares'):
  58             # clean up leading and trailing spaces & make sure ref is valid
  59             tsnshares = []
  60             for x in config.get('_tivo_' + tsn, 'shares').split(','):
  61                 y = x.lstrip().rstrip()
  62                 if config.has_section(y):
  63                     tsnshares += [(y, dict(config.items(y)))]
  64             if tsnshares:
  65                 shares = tsnshares
  66
  67     for name, data in shares:
  68         if not data.get('auto_subshares', 'False').lower() == 'true':
  69             continue
  70
  71         base_path = data['path']
  72         try:
  73             for item in os.listdir(base_path):
  74                 item_path = os.path.join(base_path, item)
  75                 if not os.path.isdir(item_path):
  76                     continue
  77
  78                 new_name = name + '/' + item
  79                 new_data = dict(data)
  80                 new_data['path'] = item_path
  81
  82                 shares.append((new_name, new_data))
  83         except:
  84             pass
  85
  86     return shares
  87
  88 def getDebug(ref):
  89     if config.has_option('Server', 'debug'):
  90         try:
  91             return str2tuple(config.get('Server', 'debug')+',,')[ref]
  92         except NoOptionError:
  93             pass
  94     return str2tuple('False,,')[ref]
  95
  96 def getHack83():
  97     try:
  98         debug = config.get('Server', 'hack83')
  99         if debug.lower() == 'true':
 100             return True
 101         else:
 102             return False
 103     except NoOptionError:
 104         return False
 105
 106 def getOptres(tsn = None):
 107     if tsn and config.has_section('_tivo_' + tsn):
 108         try:
 109             return config.getboolean('_tivo_' + tsn, 'optres')
 110         except NoOptionError, ValueError:
 111             pass
 112     try:
 113         return config.getboolean('Server', 'optres')
 114     except NoOptionError, ValueError:
 115         return False
 116
 117 def getPixelAR(ref):
 118     if config.has_option('Server', 'par'):
 119         try:
 120             return (True, config.getfloat('Server', 'par'))[ref]
 121         except NoOptionError, ValueError:
 122             pass
 123     return (False, 1.0)[ref]
 124
 125 def get(section, key):
 126     return config.get(section, key)
 127
 128 def getFFmpegTemplate(tsn):
 129     if tsn and config.has_section('_tivo_' + tsn):
 130         try:
 131             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 132         except NoOptionError:
 133             pass
 134     try:
 135         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 136     except NoOptionError: #default
 137         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 138                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 139                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(ffmpeg_pram)s %(format)s'
 140
 141 def getFFmpegPrams(tsn):
 142     if tsn and config.has_section('_tivo_' + tsn):
 143         try:
 144             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 145         except NoOptionError:
 146             pass
 147     try:
 148         return config.get('Server', 'ffmpeg_pram', raw=True)
 149     except NoOptionError:
 150         return None
 151
 152 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 153     return tsn != '' and tsn[:3] in ['648', '652']
 154
 155 def getValidWidths():
 156     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 157
 158 def getValidHeights():
 159     return [1080, 720, 480] # Technically 240 is also supported
 160
 161 # Return the number in list that is nearest to x
 162 # if two values are equidistant, return the larger
 163 def nearest(x, list):
 164     return reduce(lambda a, b: closest(x, a, b), list)
 165
 166 def closest(x, a, b):
 167     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 168         return a
 169     else:
 170         return b
 171
 172 def nearestTivoHeight(height):
 173     return nearest(height, getValidHeights())
 174
 175 def nearestTivoWidth(width):
 176     return nearest(width, getValidWidths())
 177
 178 def getTivoHeight(tsn):
 179     if tsn and config.has_section('_tivo_' + tsn):
 180         try:
 181             height = config.getint('_tivo_' + tsn, 'height')
 182             return nearestTivoHeight(height)
 183         except NoOptionError:
 184             pass
 185     try:
 186         height = config.getint('Server', 'height')
 187         return nearestTivoHeight(height)
 188     except NoOptionError: #defaults for S3/S2 TiVo
 189         if isHDtivo(tsn):
 190             return 720
 191         else:
 192             return 480
 193
 194 def getTivoWidth(tsn):
 195     if tsn and config.has_section('_tivo_' + tsn):
 196         try:
 197             width = config.getint('_tivo_' + tsn, 'width')
 198             return nearestTivoWidth(width)
 199         except NoOptionError:
 200             pass
 201     try:
 202         width = config.getint('Server', 'width')
 203         return nearestTivoWidth(width)
 204     except NoOptionError: #defaults for S3/S2 TiVo
 205         if isHDtivo(tsn):
 206             return 1280
 207         else:
 208             return 544
 209
 210 def getAudioBR(tsn = None):
 211     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 212     #compare audio_br to max_audio_br and return lowest
 213     if tsn and config.has_section('_tivo_' + tsn):
 214         try:
 215             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 216             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 217         except NoOptionError:
 218             pass
 219     try:
 220         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 221         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 222     except NoOptionError:
 223         return str(min(384, getMaxAudioBR(tsn))) + 'k'
 224
 225 def getVideoBR(tsn = None):
 226     if tsn and config.has_section('_tivo_' + tsn):
 227         try:
 228             return config.get('_tivo_' + tsn, 'video_br')
 229         except NoOptionError:
 230             pass
 231     try:
 232         return config.get('Server', 'video_br')
 233     except NoOptionError: #defaults for S3/S2 TiVo
 234         if isHDtivo(tsn):
 235             return '8192k'
 236         else:
 237             return '4096K'
 238
 239 def getMaxVideoBR():
 240     try:
 241         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 242     except NoOptionError: #default to 17Mi
 243         return '17408k'
 244
 245 def getBuffSize():
 246     try:
 247         return str(int(strtod(config.get('Server', 'bufsize'))))
 248     except NoOptionError: #default 1024k
 249         return '1024k'
 250
 251 def getMaxAudioBR(tsn = None):
 252     #convert to non-zero multiple of 64 for ffmpeg compatibility
 253     if tsn and config.has_section('_tivo_' + tsn):
 254         try:
 255             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 256         except NoOptionError:
 257             pass
 258     try:
 259         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 260     except NoOptionError:
 261         return int(448) #default to 448
 262
 263 def getAudioCodec(tsn = None):
 264     if tsn and config.has_section('_tivo_' + tsn):
 265         try:
 266             return config.get('_tivo_' + tsn, 'audio_codec')
 267         except NoOptionError:
 268             pass
 269     try:
 270         return config.get('Server', 'audio_codec')
 271     except NoOptionError:
 272         return None
 273
 274 def getAudioCH(tsn = None):
 275     if tsn and config.has_section('_tivo_' + tsn):
 276         try:
 277             return config.get('_tivo_' + tsn, 'audio_ch')
 278         except NoOptionError:
 279             pass
 280     try:
 281         return config.get('Server', 'audio_ch')
 282     except NoOptionError:
 283         return None
 284
 285 def getAudioFR(tsn = None):
 286     if tsn and config.has_section('_tivo_' + tsn):
 287         try:
 288             return config.get('_tivo_' + tsn, 'audio_fr')
 289         except NoOptionError:
 290             pass
 291     try:
 292         return config.get('Server', 'audio_fr')
 293     except NoOptionError:
 294         return None
 295
 296 def getVideoFPS(tsn = None):
 297     if tsn and config.has_section('_tivo_' + tsn):
 298         try:
 299             return config.get('_tivo_' + tsn, 'video_fps')
 300         except NoOptionError:
 301             pass
 302     try:
 303         return config.get('Server', 'video_fps')
 304     except NoOptionError:
 305         return None
 306
 307 def getVideoCodec(tsn = None):
 308     if tsn and config.has_section('_tivo_' + tsn):
 309         try:
 310             return config.get('_tivo_' + tsn, 'video_codec')
 311         except NoOptionError:
 312             pass
 313     try:
 314         return config.get('Server', 'video_codec')
 315     except NoOptionError:
 316         return None
 317
 318 def getFormat(tsn = None):
 319     if tsn and config.has_section('_tivo_' + tsn):
 320         try:
 321             return config.get('_tivo_' + tsn, 'force_format')
 322         except NoOptionError:
 323             pass
 324     try:
 325         return config.get('Server', 'force_format')
 326     except NoOptionError:
 327         return None
 328
 329 def str2tuple(s):
 330     items = s.split(',')
 331     L = [x.strip() for x in items]
 332     return tuple(L)
 333
 334 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 335 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 336 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 337 def strtod(value):
 338     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 339                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 340                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 341                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 342     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 343     m = p.match(value)
 344     if m is None:
 345         raise SyntaxError('Invalid bit value syntax')
 346     (coef, prefix, power, byte) = m.groups()
 347     if prefix is None:
 348         value = float(coef)
 349     else:
 350         exponent = float(prefixes[prefix])
 351         if power == 'i':
 352             # Use powers of 2
 353             value = float(coef) * pow(2.0, exponent / 0.3)
 354         else:
 355             # Use powers of 10
 356             value = float(coef) * pow(10.0, exponent)
 357     if byte == 'B': # B == Byte, b == bit
 358         value *= 8;
 359     return value