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