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():
 107     try:
 108         return config.getboolean('Server', 'optres')
 109     except NoOptionError, ValueError:
 110         return False
 111
 112 def get(section, key):
 113     return config.get(section, key)
 114
 115 def getFFmpegTemplate(tsn):
 116     if tsn and config.has_section('_tivo_' + tsn):
 117         try:
 118             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 119         except NoOptionError:
 120             pass
 121     try:
 122         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 123     except NoOptionError: #default
 124         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 125                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 126                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(ffmpeg_pram)s %(format)s'
 127
 128 def getFFmpegPrams(tsn):
 129     if tsn and config.has_section('_tivo_' + tsn):
 130         try:
 131             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 132         except NoOptionError:
 133             pass
 134     try:
 135         return config.get('Server', 'ffmpeg_pram', raw=True)
 136     except NoOptionError:
 137         return None
 138
 139 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 140     return tsn != '' and tsn[:3] in ['648', '652']
 141
 142 def getValidWidths():
 143     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 144
 145 def getValidHeights():
 146     return [1080, 720, 480] # Technically 240 is also supported
 147
 148 # Return the number in list that is nearest to x
 149 # if two values are equidistant, return the larger
 150 def nearest(x, list):
 151     return reduce(lambda a, b: closest(x, a, b), list)
 152
 153 def closest(x, a, b):
 154     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 155         return a
 156     else:
 157         return b
 158
 159 def nearestTivoHeight(height):
 160     return nearest(height, getValidHeights())
 161
 162 def nearestTivoWidth(width):
 163     return nearest(width, getValidWidths())
 164
 165 def getTivoHeight(tsn):
 166     if tsn and config.has_section('_tivo_' + tsn):
 167         try:
 168             height = config.getint('_tivo_' + tsn, 'height')
 169             return nearestTivoHeight(height)
 170         except NoOptionError:
 171             pass
 172     try:
 173         height = config.getint('Server', 'height')
 174         return nearestTivoHeight(height)
 175     except NoOptionError: #defaults for S3/S2 TiVo
 176         if isHDtivo(tsn):
 177             return 720
 178         else:
 179             return 480
 180
 181 def getTivoWidth(tsn):
 182     if tsn and config.has_section('_tivo_' + tsn):
 183         try:
 184             width = config.getint('_tivo_' + tsn, 'width')
 185             return nearestTivoWidth(width)
 186         except NoOptionError:
 187             pass
 188     try:
 189         width = config.getint('Server', 'width')
 190         return nearestTivoWidth(width)
 191     except NoOptionError: #defaults for S3/S2 TiVo
 192         if isHDtivo(tsn):
 193             return 1280
 194         else:
 195             return 544
 196
 197 def getAudioBR(tsn = None):
 198     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 199     #compare audio_br to max_audio_br and return lowest
 200     if tsn and config.has_section('_tivo_' + tsn):
 201         try:
 202             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 203             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 204         except NoOptionError:
 205             pass
 206     try:
 207         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 208         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 209     except NoOptionError: #defaults for S3/S2 TiVo
 210         if isHDtivo(tsn):
 211             return '384k'
 212         else:
 213             return '192k'
 214
 215 def getVideoBR(tsn = None):
 216     if tsn and config.has_section('_tivo_' + tsn):
 217         try:
 218             return config.get('_tivo_' + tsn, 'video_br')
 219         except NoOptionError:
 220             pass
 221     try:
 222         return config.get('Server', 'video_br')
 223     except NoOptionError: #defaults for S3/S2 TiVo
 224         if isHDtivo(tsn):
 225             return '8192k'
 226         else:
 227             return '4096K'
 228
 229 def getMaxVideoBR():
 230     try:
 231         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 232     except NoOptionError: #default to 17Mi
 233         return '17408k'
 234
 235 def getBuffSize():
 236     try:
 237         return str(int(strtod(config.get('Server', 'bufsize'))))
 238     except NoOptionError: #default 1024k
 239         return '1024k'
 240
 241 def getMaxAudioBR(tsn = None):
 242     #convert to non-zero multiple of 64 for ffmpeg compatibility
 243     if tsn and config.has_section('_tivo_' + tsn):
 244         try:
 245             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 246         except NoOptionError:
 247             pass
 248     try:
 249         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 250     except NoOptionError:
 251         return int(448) #default to 448
 252
 253 def getAudioCodec(tsn = None):
 254     if tsn and config.has_section('_tivo_' + tsn):
 255         try:
 256             return config.get('_tivo_' + tsn, 'audio_codec')
 257         except NoOptionError:
 258             pass
 259     try:
 260         return config.get('Server', 'audio_codec')
 261     except NoOptionError:
 262         return None
 263
 264 def getAudioCH(tsn = None):
 265     if tsn and config.has_section('_tivo_' + tsn):
 266         try:
 267             return config.get('_tivo_' + tsn, 'audio_ch')
 268         except NoOptionError:
 269             pass
 270     try:
 271         return config.get('Server', 'audio_ch')
 272     except NoOptionError:
 273         return None
 274
 275 def getAudioFR(tsn = None):
 276     if tsn and config.has_section('_tivo_' + tsn):
 277         try:
 278             return config.get('_tivo_' + tsn, 'audio_fr')
 279         except NoOptionError:
 280             pass
 281     try:
 282         return config.get('Server', 'audio_fr')
 283     except NoOptionError:
 284         return None
 285
 286 def getVideoFPS(tsn = None):
 287     if tsn and config.has_section('_tivo_' + tsn):
 288         try:
 289             return config.get('_tivo_' + tsn, 'video_fps')
 290         except NoOptionError:
 291             pass
 292     try:
 293         return config.get('Server', 'video_fps')
 294     except NoOptionError:
 295         return None
 296
 297 def getVideoCodec(tsn = None):
 298     if tsn and config.has_section('_tivo_' + tsn):
 299         try:
 300             return config.get('_tivo_' + tsn, 'video_codec')
 301         except NoOptionError:
 302             pass
 303     try:
 304         return config.get('Server', 'video_codec')
 305     except NoOptionError:
 306         return None
 307
 308 def getFormat(tsn = None):
 309     if tsn and config.has_section('_tivo_' + tsn):
 310         try:
 311             return config.get('_tivo_' + tsn, 'force_format')
 312         except NoOptionError:
 313             pass
 314     try:
 315         return config.get('Server', 'force_format')
 316     except NoOptionError:
 317         return None
 318
 319 def str2tuple(s):
 320     items = s.split(',')
 321     L = [x.strip() for x in items]
 322     return tuple(L)
 323
 324 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 325 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 326 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 327 def strtod(value):
 328     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 329                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 330                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 331                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 332     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 333     m = p.match(value)
 334     if m is None:
 335         raise SyntaxError('Invalid bit value syntax')
 336     (coef, prefix, power, byte) = m.groups()
 337     if prefix is None:
 338         value = float(coef)
 339     else:
 340         exponent = float(prefixes[prefix])
 341         if power == 'i':
 342             # Use powers of 2
 343             value = float(coef) * pow(2.0, exponent / 0.3)
 344         else:
 345             # Use powers of 10
 346             value = float(coef) * pow(10.0, exponent)
 347     if byte == 'B': # B == Byte, b == bit
 348         value *= 8;
 349     return value