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         return config.getboolean('Server', 'hack83')
 129     except NoOptionError, ValueError:
 130         return False
 131
 132 def getOptres(tsn = None):
 133     if tsn and config.has_section('_tivo_' + tsn):
 134         try:
 135             return config.getboolean('_tivo_' + tsn, 'optres')
 136         except NoOptionError, ValueError:
 137             pass
 138     try:
 139         return config.getboolean('Server', 'optres')
 140     except NoOptionError, ValueError:
 141         return False
 142
 143 def getPixelAR(ref):
 144     if config.has_option('Server', 'par'):
 145         try:
 146             return (True, config.getfloat('Server', 'par'))[ref]
 147         except NoOptionError, ValueError:
 148             pass
 149     return (False, 1.0)[ref]
 150
 151 def get(section, key):
 152     return config.get(section, key)
 153
 154 def getFFmpegTemplate(tsn):
 155     if tsn and config.has_section('_tivo_' + tsn):
 156         try:
 157             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 158         except NoOptionError:
 159             pass
 160     try:
 161         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 162     except NoOptionError: #default
 163         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 164                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 165                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(audio_lang)s \
 166                 %(ffmpeg_pram)s %(format)s'
 167
 168 def getFFmpegPrams(tsn):
 169     if tsn and config.has_section('_tivo_' + tsn):
 170         try:
 171             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 172         except NoOptionError:
 173             pass
 174     try:
 175         return config.get('Server', 'ffmpeg_pram', raw=True)
 176     except NoOptionError:
 177         return None
 178
 179 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 180     return tsn != '' and tsn[:3] in ['648', '652', '658']
 181
 182 def getValidWidths():
 183     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 184
 185 def getValidHeights():
 186     return [1080, 720, 480] # Technically 240 is also supported
 187
 188 # Return the number in list that is nearest to x
 189 # if two values are equidistant, return the larger
 190 def nearest(x, list):
 191     return reduce(lambda a, b: closest(x, a, b), list)
 192
 193 def closest(x, a, b):
 194     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 195         return a
 196     else:
 197         return b
 198
 199 def nearestTivoHeight(height):
 200     return nearest(height, getValidHeights())
 201
 202 def nearestTivoWidth(width):
 203     return nearest(width, getValidWidths())
 204
 205 def getTivoHeight(tsn):
 206     if tsn and config.has_section('_tivo_' + tsn):
 207         try:
 208             height = config.getint('_tivo_' + tsn, 'height')
 209             return nearestTivoHeight(height)
 210         except NoOptionError:
 211             pass
 212     try:
 213         height = config.getint('Server', 'height')
 214         return nearestTivoHeight(height)
 215     except NoOptionError: #defaults for S3/S2 TiVo
 216         if isHDtivo(tsn):
 217             return 720
 218         else:
 219             return 480
 220
 221 def getTivoWidth(tsn):
 222     if tsn and config.has_section('_tivo_' + tsn):
 223         try:
 224             width = config.getint('_tivo_' + tsn, 'width')
 225             return nearestTivoWidth(width)
 226         except NoOptionError:
 227             pass
 228     try:
 229         width = config.getint('Server', 'width')
 230         return nearestTivoWidth(width)
 231     except NoOptionError: #defaults for S3/S2 TiVo
 232         if isHDtivo(tsn):
 233             return 1280
 234         else:
 235             return 544
 236
 237 def _trunc64(i):
 238     return max(int(strtod(i)) / 64000, 1) * 64
 239
 240 def getAudioBR(tsn = None):
 241     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 242     #compare audio_br to max_audio_br and return lowest
 243     if tsn and config.has_section('_tivo_' + tsn):
 244         try:
 245             audiobr = _trunc64(config.get('_tivo_' + tsn, 'audio_br'))
 246             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 247         except NoOptionError:
 248             pass
 249     try:
 250         audiobr = _trunc64(config.get('Server', 'audio_br'))
 251         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 252     except NoOptionError:
 253         return str(min(384, getMaxAudioBR(tsn))) + 'k'
 254
 255 def _k(i):
 256     return str(int(strtod(i)) / 1000) + 'k'
 257
 258 def getVideoBR(tsn = None):
 259     if tsn and config.has_section('_tivo_' + tsn):
 260         try:
 261             return _k(config.get('_tivo_' + tsn, 'video_br'))
 262         except NoOptionError:
 263             pass
 264     try:
 265         return _k(config.get('Server', 'video_br'))
 266     except NoOptionError: #defaults for S3/S2 TiVo
 267         if isHDtivo(tsn):
 268             return '8192k'
 269         else:
 270             return '4096K'
 271
 272 def getMaxVideoBR():
 273     try:
 274         return _k(config.get('Server', 'max_video_br'))
 275     except NoOptionError: #default to 30000k
 276         return '30000k'
 277
 278 def getVideoPCT():
 279     try:
 280         return config.getfloat('Server', 'video_pct')
 281     except NoOptionError:
 282         return 70
 283
 284 def getBuffSize(tsn = None):
 285     if tsn and config.has_section('_tivo_' + tsn):
 286         if config.has_option('_tivo_' + tsn, 'bufsize'):
 287             try:
 288                 return _k(config.get('_tivo_' + tsn, 'bufsize'))
 289             except NoOptionError:
 290                 pass
 291     if config.has_option('Server', 'bufsize'):
 292         try:
 293             return _k(config.get('Server', 'bufsize'))
 294         except NoOptionError:
 295             pass
 296     if isHDtivo(tsn):
 297         return '4096k'
 298     else:
 299         return '1024k'
 300
 301 def getMaxAudioBR(tsn = None):
 302     #convert to non-zero multiple of 64 for ffmpeg compatibility
 303     if tsn and config.has_section('_tivo_' + tsn):
 304         try:
 305             return _trunc64(config.get('_tivo_' + tsn, 'max_audio_br'))
 306         except NoOptionError:
 307             pass
 308     try:
 309         return _trunc64(config.get('Server', 'max_audio_br'))
 310     except NoOptionError:
 311         return int(448) #default to 448
 312
 313 def get_tsn(name, tsn=None):
 314     if tsn and config.has_section('_tivo_' + tsn):
 315         try:
 316             return config.get('_tivo_' + tsn, name)
 317         except NoOptionError:
 318             pass
 319     try:
 320         return config.get('Server', name)
 321     except NoOptionError:
 322         return None
 323
 324 def getAudioCodec(tsn=None):
 325     return get_tsn('audio_codec', tsn)
 326
 327 def getAudioCH(tsn=None):
 328     return get_tsn('audio_ch', tsn)
 329
 330 def getAudioFR(tsn=None):
 331     return get_tsn('audio_fr', tsn)
 332
 333 def getAudioLang(tsn=None):
 334     return get_tsn('audio_lang', tsn)
 335
 336 def getCopyTS(tsn = None):
 337     if tsn and config.has_section('_tivo_' + tsn):
 338         if config.has_option('_tivo_' + tsn, 'copy_ts'):
 339             try:
 340                 return config.get('_tivo_' + tsn, 'copy_ts')
 341             except NoOptionError, ValueError:
 342                 pass
 343     if config.has_option('Server', 'copy_ts'):
 344         try:
 345             return config.get('Server', 'copy_ts')
 346         except NoOptionError, ValueError:
 347             pass
 348     return 'none'
 349
 350 def getVideoFPS(tsn=None):
 351     return get_tsn('video_fps', tsn)
 352
 353 def getVideoCodec(tsn=None):
 354     return get_tsn('video_codec', tsn)
 355
 356 def getFormat(tsn = None):
 357     return get_tsn('format', tsn)
 358
 359 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 360 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 361 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 362 def strtod(value):
 363     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 364                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 365                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 366                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 367     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 368     m = p.match(value)
 369     if m is None:
 370         raise SyntaxError('Invalid bit value syntax')
 371     (coef, prefix, power, byte) = m.groups()
 372     if prefix is None:
 373         value = float(coef)
 374     else:
 375         exponent = float(prefixes[prefix])
 376         if power == 'i':
 377             # Use powers of 2
 378             value = float(coef) * pow(2.0, exponent / 0.3)
 379         else:
 380             # Use powers of 10
 381             value = float(coef) * pow(10.0, exponent)
 382     if byte == 'B': # B == Byte, b == bit
 383         value *= 8;
 384     return value