config.py

   1 import ConfigParser, os, sys
   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
  13 config_files = [
  14     '/etc/pyTivo.conf',
  15     os.path.join(p, 'pyTivo.conf'),
  16 ]
  17 config_exists = False
  18 for config_file in config_files:
  19     if  os.path.exists(config_file):
  20         config_exists = True
  21 if not config_exists:
  22     print 'ERROR:  pyTivo.conf does not exist.\n' + \
  23           'You must create this file before running pyTivo.'
  24     sys.exit(1)
  25 config.read(config_files)
  26
  27 def reset():
  28     global config
  29     del config
  30     config = ConfigParser.ConfigParser()
  31     config.read(config_files)
  32
  33 def getGUID():
  34     if config.has_option('Server', 'GUID'):
  35         return config.get('Server', 'GUID')
  36     else:
  37         return guid
  38
  39 def getTivoUsername():
  40     return config.get('Server', 'tivo_username')
  41
  42 def getTivoPassword():
  43     return config.get('Server', 'tivo_password')
  44
  45 def getBeaconAddresses():
  46     if config.has_option('Server', 'beacon'):
  47         beacon_ips = config.get('Server', 'beacon')
  48     else:
  49         beacon_ips = '255.255.255.255'
  50     return beacon_ips
  51
  52 def getPort():
  53     return config.get('Server', 'Port')
  54
  55 def get169Blacklist(tsn):  # tivo does not pad 16:9 video
  56     return tsn != '' and tsn[:3] in ('540')
  57
  58 def get169Letterbox(tsn):  # tivo pads 16:9 video for 4:3 display
  59     return tsn != '' and tsn[:3] in ('649')
  60
  61 def get169Setting(tsn):
  62     if not tsn:
  63         return True
  64
  65     if config.has_section('_tivo_' + tsn):
  66         if config.has_option('_tivo_' + tsn, 'aspect169'):
  67             try:
  68                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  69             except ValueError:
  70                 pass
  71
  72     if get169Blacklist(tsn) or get169Letterbox(tsn):
  73         return False
  74
  75     return True
  76
  77 def getShares(tsn=''):
  78     shares = [(section, dict(config.items(section)))
  79                 for section in config.sections()
  80                 if not (
  81                     section.startswith('_tivo_')
  82                     or section in ('Server', 'loggers', 'handlers', 'formatters')
  83                     or section.startswith('logger_')
  84                     or section.startswith('handler_')
  85                     or section.startswith('formatter_')
  86                 )
  87     ]
  88
  89     if config.has_section('_tivo_' + tsn):
  90         if config.has_option('_tivo_' + tsn, 'shares'):
  91             # clean up leading and trailing spaces & make sure ref is valid
  92             tsnshares = []
  93             for x in config.get('_tivo_' + tsn, 'shares').split(','):
  94                 y = x.lstrip().rstrip()
  95                 if config.has_section(y):
  96                     tsnshares += [(y, dict(config.items(y)))]
  97             if tsnshares:
  98                 shares = tsnshares
  99
 100     for name, data in shares:
 101         if not data.get('auto_subshares', 'False').lower() == 'true':
 102             continue
 103
 104         base_path = data['path']
 105         try:
 106             for item in os.listdir(base_path):
 107                 item_path = os.path.join(base_path, item)
 108                 if not os.path.isdir(item_path) or item.startswith('.'):
 109                     continue
 110
 111                 new_name = name + '/' + item
 112                 new_data = dict(data)
 113                 new_data['path'] = item_path
 114
 115                 shares.append((new_name, new_data))
 116         except:
 117             pass
 118
 119     return shares
 120
 121 def getDebug():
 122     try:
 123         return config.getboolean('Server', 'debug')
 124     except NoOptionError, ValueError:
 125         return False
 126
 127 def getHack83():
 128     try:
 129         debug = config.get('Server', 'hack83')
 130         if debug.lower() == 'true':
 131             return True
 132         else:
 133             return False
 134     except NoOptionError:
 135         return False
 136
 137 def getOptres(tsn = None):
 138     if tsn and config.has_section('_tivo_' + tsn):
 139         try:
 140             return config.getboolean('_tivo_' + tsn, 'optres')
 141         except NoOptionError, ValueError:
 142             pass
 143     try:
 144         return config.getboolean('Server', 'optres')
 145     except NoOptionError, ValueError:
 146         return False
 147
 148 def getPixelAR(ref):
 149     if config.has_option('Server', 'par'):
 150         try:
 151             return (True, config.getfloat('Server', 'par'))[ref]
 152         except NoOptionError, ValueError:
 153             pass
 154     return (False, 1.0)[ref]
 155
 156 def get(section, key):
 157     return config.get(section, key)
 158
 159 def getFFmpegTemplate(tsn):
 160     if tsn and config.has_section('_tivo_' + tsn):
 161         try:
 162             return config.get('_tivo_' + tsn, 'ffmpeg_tmpl', raw=True)
 163         except NoOptionError:
 164             pass
 165     try:
 166         return config.get('Server', 'ffmpeg_tmpl', raw=True)
 167     except NoOptionError: #default
 168         return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 169                 %(buff_size)s %(aspect_ratio)s -comment pyTivo.py %(audio_br)s \
 170                 %(audio_fr)s %(audio_ch)s %(audio_codec)s %(audio_lang)s \
 171                 %(ffmpeg_pram)s %(format)s'
 172
 173 def getFFmpegPrams(tsn):
 174     if tsn and config.has_section('_tivo_' + tsn):
 175         try:
 176             return config.get('_tivo_' + tsn, 'ffmpeg_pram', raw=True)
 177         except NoOptionError:
 178             pass
 179     try:
 180         return config.get('Server', 'ffmpeg_pram', raw=True)
 181     except NoOptionError:
 182         return None
 183
 184 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 185     return tsn != '' and tsn[:3] in ['648', '652']
 186
 187 def getValidWidths():
 188     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 189
 190 def getValidHeights():
 191     return [1080, 720, 480] # Technically 240 is also supported
 192
 193 # Return the number in list that is nearest to x
 194 # if two values are equidistant, return the larger
 195 def nearest(x, list):
 196     return reduce(lambda a, b: closest(x, a, b), list)
 197
 198 def closest(x, a, b):
 199     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 200         return a
 201     else:
 202         return b
 203
 204 def nearestTivoHeight(height):
 205     return nearest(height, getValidHeights())
 206
 207 def nearestTivoWidth(width):
 208     return nearest(width, getValidWidths())
 209
 210 def getTivoHeight(tsn):
 211     if tsn and config.has_section('_tivo_' + tsn):
 212         try:
 213             height = config.getint('_tivo_' + tsn, 'height')
 214             return nearestTivoHeight(height)
 215         except NoOptionError:
 216             pass
 217     try:
 218         height = config.getint('Server', 'height')
 219         return nearestTivoHeight(height)
 220     except NoOptionError: #defaults for S3/S2 TiVo
 221         if isHDtivo(tsn):
 222             return 720
 223         else:
 224             return 480
 225
 226 def getTivoWidth(tsn):
 227     if tsn and config.has_section('_tivo_' + tsn):
 228         try:
 229             width = config.getint('_tivo_' + tsn, 'width')
 230             return nearestTivoWidth(width)
 231         except NoOptionError:
 232             pass
 233     try:
 234         width = config.getint('Server', 'width')
 235         return nearestTivoWidth(width)
 236     except NoOptionError: #defaults for S3/S2 TiVo
 237         if isHDtivo(tsn):
 238             return 1280
 239         else:
 240             return 544
 241
 242 def getAudioBR(tsn = None):
 243     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 244     #compare audio_br to max_audio_br and return lowest
 245     if tsn and config.has_section('_tivo_' + tsn):
 246         try:
 247             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 248             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 249         except NoOptionError:
 250             pass
 251     try:
 252         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 253         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 254     except NoOptionError:
 255         return str(min(384, getMaxAudioBR(tsn))) + 'k'
 256
 257 def getVideoBR(tsn = None):
 258     if tsn and config.has_section('_tivo_' + tsn):
 259         try:
 260             return str(int(strtod(config.get('_tivo_' + tsn, 'video_br'))/1000)) + 'k'
 261         except NoOptionError:
 262             pass
 263     try:
 264         return str(int(strtod(config.get('Server', 'video_br'))/1000)) + 'k'
 265     except NoOptionError: #defaults for S3/S2 TiVo
 266         if isHDtivo(tsn):
 267             return '8192k'
 268         else:
 269             return '4096K'
 270
 271 def getMaxVideoBR():
 272     try:
 273         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 274     except NoOptionError: #default to 30000k
 275         return '30000k'
 276
 277 def getVideoPCT():
 278     try:
 279         return config.getfloat('Server', 'video_pct')
 280     except NoOptionError:
 281         return 70
 282
 283 def getBuffSize():
 284     try:
 285         return str(int(strtod(config.get('Server', 'bufsize'))/1000)) + 'k'
 286     except NoOptionError: #default 1024k
 287         return '1024k'
 288
 289 def getMaxAudioBR(tsn = None):
 290     #convert to non-zero multiple of 64 for ffmpeg compatibility
 291     if tsn and config.has_section('_tivo_' + tsn):
 292         try:
 293             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 294         except NoOptionError:
 295             pass
 296     try:
 297         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 298     except NoOptionError:
 299         return int(448) #default to 448
 300
 301 def get_tsn(name, tsn=None):
 302     if tsn and config.has_section('_tivo_' + tsn):
 303         try:
 304             return config.get('_tivo_' + tsn, name)
 305         except NoOptionError:
 306             pass
 307     try:
 308         return config.get('Server', name)
 309     except NoOptionError:
 310         return None
 311
 312 def getAudioCodec(tsn=None):
 313     return get_tsn('audio_codec', tsn)
 314
 315 def getAudioCH(tsn=None):
 316     return get_tsn('audio_ch', tsn)
 317
 318 def getAudioFR(tsn=None):
 319     return get_tsn('audio_fr', tsn)
 320
 321 def getAudioLang(tsn=None):
 322     return get_tsn('audio_lang', tsn)
 323
 324 def getCopyTS(tsn = None):
 325     if tsn and config.has_section('_tivo_' + tsn):
 326         if config.has_option('_tivo_' + tsn, 'copy_ts'):
 327             try:
 328                 return config.get('_tivo_' + tsn, 'copy_ts')
 329             except NoOptionError, ValueError:
 330                 pass
 331     if config.has_option('Server', 'copy_ts'):
 332         try:
 333             return config.get('Server', 'copy_ts')
 334         except NoOptionError, ValueError:
 335             pass
 336     return 'none'
 337
 338 def getVideoFPS(tsn=None):
 339     return get_tsn('video_fps', tsn)
 340
 341 def getVideoCodec(tsn=None):
 342     return get_tsn('video_codec', tsn)
 343
 344 def getFormat(tsn = None):
 345     return get_tsn('force_format', tsn)
 346
 347 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 348 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 349 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 350 def strtod(value):
 351     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 352                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 353                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 354                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 355     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 356     m = p.match(value)
 357     if m is None:
 358         raise SyntaxError('Invalid bit value syntax')
 359     (coef, prefix, power, byte) = m.groups()
 360     if prefix is None:
 361         value = float(coef)
 362     else:
 363         exponent = float(prefixes[prefix])
 364         if power == 'i':
 365             # Use powers of 2
 366             value = float(coef) * pow(2.0, exponent / 0.3)
 367         else:
 368             # Use powers of 10
 369             value = float(coef) * pow(10.0, exponent)
 370     if byte == 'B': # B == Byte, b == bit
 371         value *= 8;
 372     return value