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