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