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     config.read(config_file)
  14
  15 def getGUID():
  16     if config.has_option('Server', 'GUID'):
  17         guid = config.get('Server', 'GUID')
  18     else:
  19         guid = '123456'
  20     return guid
  21
  22 def getBeaconAddresses():
  23     if config.has_option('Server', 'beacon'):
  24         beacon_ips = config.get('Server', 'beacon')
  25     else:
  26         beacon_ips = '255.255.255.255'
  27     return beacon_ips
  28
  29 def getPort():
  30     return config.get('Server', 'Port')
  31
  32 def get169Setting(tsn):
  33     if not tsn:
  34         return True
  35
  36     if config.has_section('_tivo_' + tsn):
  37         if config.has_option('_tivo_' + tsn, 'aspect169'):
  38             try:
  39                 return config.getboolean('_tivo_' + tsn, 'aspect169')
  40             except ValueError:
  41                 pass
  42
  43     if tsn[:3] in BLACKLIST_169:
  44         return False
  45
  46     return True
  47
  48 def getShares(tsn=''):
  49     shares = [(section, dict(config.items(section)))
  50               for section in config.sections()
  51               if not(section.startswith('_tivo_') or section == 'Server')]
  52
  53     if config.has_section('_tivo_' + tsn):
  54         if config.has_option('_tivo_' + tsn, 'shares'):
  55             # clean up leading and trailing spaces & make sure ref is valid
  56             tsnshares = []
  57             for x in config.get('_tivo_' + tsn, 'shares').split(','):
  58                 y = x.lstrip().rstrip()
  59                 if config.has_section(y):
  60                     tsnshares += [(y, dict(config.items(y)))]
  61             if tsnshares:
  62                 shares = tsnshares
  63
  64     for name, data in shares:
  65         if not data.get('auto_subshares', 'False').lower() == 'true':
  66             continue
  67
  68         base_path = data['path']
  69         for item in os.listdir(base_path):
  70             item_path = os.path.join(base_path, item)
  71             if not os.path.isdir(item_path):
  72                 continue
  73
  74             new_name = name + '/' + item
  75             new_data = dict(data)
  76             new_data['path'] = item_path
  77
  78             shares.append((new_name, new_data))
  79
  80     return shares
  81
  82 def getDebug():
  83     try:
  84         return config.getboolean('Server', 'debug')
  85     except NoOptionError, ValueError:
  86         return False
  87
  88 def getHack83():
  89     try:
  90         debug = config.get('Server', 'hack83')
  91         if debug.lower() == 'true':
  92             return True
  93         else:
  94             return False
  95     except NoOptionError:
  96         return False
  97
  98 def getOptres():
  99     try:
 100         return config.getboolean('Server', 'optres')
 101     except NoOptionError, ValueError:
 102         return False
 103
 104 def get(section, key):
 105     return config.get(section, key)
 106
 107 def getFFMPEGTemplate(tsn):
 108     if tsn and config.has_section('_tivo_' + tsn):
 109         try:
 110             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
 111         except NoOptionError:
 112             pass
 113     try:
 114         return config.get('Server', 'ffmpeg_prams', raw=True)
 115     except NoOptionError: #default
 116         return '-vcodec mpeg2video -r 29.97 -b %(video_br)s -maxrate %(max_video_br)s -bufsize %(buff_size)s %(aspect_ratio)s -comment pyTivo.py -ab %(audio_br)s %(audio_fr)s %(audio_codec)s -f vob -'
 117
 118 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 119     return tsn != '' and tsn[:3] in ['648', '652']
 120
 121 def getValidWidths():
 122     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 123
 124 def getValidHeights():
 125     return [1080, 720, 480] # Technically 240 is also supported
 126
 127 # Return the number in list that is nearest to x
 128 # if two values are equidistant, return the larger
 129 def nearest(x, list):
 130     return reduce(lambda a, b: closest(x, a, b), list)
 131
 132 def closest(x, a, b):
 133     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 134         return a
 135     else:
 136         return b
 137
 138 def nearestTivoHeight(height):
 139     return nearest(height, getValidHeights())
 140
 141 def nearestTivoWidth(width):
 142     return nearest(width, getValidWidths())
 143
 144 def getTivoHeight(tsn):
 145     if tsn and config.has_section('_tivo_' + tsn):
 146         try:
 147             height = config.getint('_tivo_' + tsn, 'height')
 148             return nearestTivoHeight(height)
 149         except NoOptionError:
 150             pass
 151     try:
 152         height = config.getint('Server', 'height')
 153         return nearestTivoHeight(height)
 154     except NoOptionError: #defaults for S3/S2 TiVo
 155         if isHDtivo(tsn):
 156             return 720
 157         else:
 158             return 480
 159
 160 def getTivoWidth(tsn):
 161     if tsn and config.has_section('_tivo_' + tsn):
 162         try:
 163             width = config.getint('_tivo_' + tsn, 'width')
 164             return nearestTivoWidth(width)
 165         except NoOptionError:
 166             pass
 167     try:
 168         width = config.getint('Server', 'width')
 169         return nearestTivoWidth(width)
 170     except NoOptionError: #defaults for S3/S2 TiVo
 171         if isHDtivo(tsn):
 172             return 1280
 173         else:
 174             return 544
 175
 176 def getAudioBR(tsn = None):
 177     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 178     #compare audio_br to max_audio_br and return lowest
 179     if tsn and config.has_section('_tivo_' + tsn):
 180         try:
 181             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 182             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 183         except NoOptionError:
 184             pass
 185     try:
 186         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 187         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 188     except NoOptionError: #defaults for S3/S2 TiVo
 189         if isHDtivo(tsn):
 190             return '384k'
 191         else:
 192             return '192k'
 193
 194 def getVideoBR(tsn = None):
 195     if tsn and config.has_section('_tivo_' + tsn):
 196         try:
 197             return config.get('_tivo_' + tsn, 'video_br')
 198         except NoOptionError:
 199             pass
 200     try:
 201         return config.get('Server', 'video_br')
 202     except NoOptionError: #defaults for S3/S2 TiVo
 203         if isHDtivo(tsn):
 204             return '8192k'
 205         else:
 206             return '4096K'
 207
 208 def getMaxVideoBR():
 209     try:
 210         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 211     except NoOptionError: #default to 17Mi
 212         return '17408k'
 213
 214 def getBuffSize():
 215     try:
 216         return config.get('Server', 'bufsize')
 217     except NoOptionError: #default 1024k
 218         return '1024k'
 219
 220 def getMaxAudioBR(tsn = None):
 221     #convert to non-zero multiple of 64 for ffmpeg compatibility
 222     if tsn and config.has_section('_tivo_' + tsn):
 223         try:
 224             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 225         except NoOptionError:
 226             pass
 227     try:
 228         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 229     except NoOptionError:
 230         return int(448) #default to 448
 231
 232 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 233 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 234 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 235 def strtod(value):
 236     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 237                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 238                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 239                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 240     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 241     m = p.match(value)
 242     if m is None:
 243         raise SyntaxError('Invalid bit value syntax')
 244     (coef, prefix, power, byte) = m.groups()
 245     if prefix is None:
 246         value = float(coef)
 247     else:
 248         exponent = float(prefixes[prefix])
 249         if power == 'i':
 250             # Use powers of 2
 251             value = float(coef) * pow(2.0, exponent / 0.3)
 252         else:
 253             # Use powers of 10
 254             value = float(coef) * pow(10.0, exponent)
 255     if byte == 'B': # B == Byte, b == bit
 256         value *= 8;
 257     return value