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():
  89     try:
  90         return config.getboolean('Server', 'debug')
  91     except NoOptionError, ValueError:
  92         return False
  93
  94 def getHack83():
  95     try:
  96         debug = config.get('Server', 'hack83')
  97         if debug.lower() == 'true':
  98             return True
  99         else:
 100             return False
 101     except NoOptionError:
 102         return False
 103
 104 def getOptres():
 105     try:
 106         return config.getboolean('Server', 'optres')
 107     except NoOptionError, ValueError:
 108         return False
 109
 110 def get(section, key):
 111     return config.get(section, key)
 112
 113 def getFFMPEGTemplate(tsn):
 114     if tsn and config.has_section('_tivo_' + tsn):
 115         try:
 116             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
 117         except NoOptionError:
 118             pass
 119     try:
 120         return config.get('Server', 'ffmpeg_prams', raw=True)
 121     except NoOptionError: #default
 122         return '-vcodec mpeg2video %(video_fps)s -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 -'
 123
 124 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 125     return tsn != '' and tsn[:3] in ['648', '652']
 126
 127 def getValidWidths():
 128     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 129
 130 def getValidHeights():
 131     return [1080, 720, 480] # Technically 240 is also supported
 132
 133 # Return the number in list that is nearest to x
 134 # if two values are equidistant, return the larger
 135 def nearest(x, list):
 136     return reduce(lambda a, b: closest(x, a, b), list)
 137
 138 def closest(x, a, b):
 139     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 140         return a
 141     else:
 142         return b
 143
 144 def nearestTivoHeight(height):
 145     return nearest(height, getValidHeights())
 146
 147 def nearestTivoWidth(width):
 148     return nearest(width, getValidWidths())
 149
 150 def getTivoHeight(tsn):
 151     if tsn and config.has_section('_tivo_' + tsn):
 152         try:
 153             height = config.getint('_tivo_' + tsn, 'height')
 154             return nearestTivoHeight(height)
 155         except NoOptionError:
 156             pass
 157     try:
 158         height = config.getint('Server', 'height')
 159         return nearestTivoHeight(height)
 160     except NoOptionError: #defaults for S3/S2 TiVo
 161         if isHDtivo(tsn):
 162             return 720
 163         else:
 164             return 480
 165
 166 def getTivoWidth(tsn):
 167     if tsn and config.has_section('_tivo_' + tsn):
 168         try:
 169             width = config.getint('_tivo_' + tsn, 'width')
 170             return nearestTivoWidth(width)
 171         except NoOptionError:
 172             pass
 173     try:
 174         width = config.getint('Server', 'width')
 175         return nearestTivoWidth(width)
 176     except NoOptionError: #defaults for S3/S2 TiVo
 177         if isHDtivo(tsn):
 178             return 1280
 179         else:
 180             return 544
 181
 182 def getAudioBR(tsn = None):
 183     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 184     #compare audio_br to max_audio_br and return lowest
 185     if tsn and config.has_section('_tivo_' + tsn):
 186         try:
 187             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 188             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 189         except NoOptionError:
 190             pass
 191     try:
 192         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 193         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 194     except NoOptionError: #defaults for S3/S2 TiVo
 195         if isHDtivo(tsn):
 196             return '384k'
 197         else:
 198             return '192k'
 199
 200 def getVideoBR(tsn = None):
 201     if tsn and config.has_section('_tivo_' + tsn):
 202         try:
 203             return config.get('_tivo_' + tsn, 'video_br')
 204         except NoOptionError:
 205             pass
 206     try:
 207         return config.get('Server', 'video_br')
 208     except NoOptionError: #defaults for S3/S2 TiVo
 209         if isHDtivo(tsn):
 210             return '8192k'
 211         else:
 212             return '4096K'
 213
 214 def getMaxVideoBR():
 215     try:
 216         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 217     except NoOptionError: #default to 17Mi
 218         return '17408k'
 219
 220 def getBuffSize():
 221     try:
 222         return config.get('Server', 'bufsize')
 223     except NoOptionError: #default 1024k
 224         return '1024k'
 225
 226 def getMaxAudioBR(tsn = None):
 227     #convert to non-zero multiple of 64 for ffmpeg compatibility
 228     if tsn and config.has_section('_tivo_' + tsn):
 229         try:
 230             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 231         except NoOptionError:
 232             pass
 233     try:
 234         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 235     except NoOptionError:
 236         return int(448) #default to 448
 237
 238 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 239 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 240 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 241 def strtod(value):
 242     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 243                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 244                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 245                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 246     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 247     m = p.match(value)
 248     if m is None:
 249         raise SyntaxError('Invalid bit value syntax')
 250     (coef, prefix, power, byte) = m.groups()
 251     if prefix is None:
 252         value = float(coef)
 253     else:
 254         exponent = float(prefixes[prefix])
 255         if power == 'i':
 256             # Use powers of 2
 257             value = float(coef) * pow(2.0, exponent / 0.3)
 258         else:
 259             # Use powers of 10
 260             value = float(coef) * pow(10.0, exponent)
 261     if byte == 'B': # B == Byte, b == bit
 262         value *= 8;
 263     return value