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(ref):
  89     if config.has_option('Server', 'debug'):
  90         try:
  91             return str2tuple(config.get('Server', 'debug')+',,')[ref]
  92         except NoOptionError:
  93             pass
  94     return str2tuple('False,,')[ref]
  95
  96 def getHack83():
  97     try:
  98         debug = config.get('Server', 'hack83')
  99         if debug.lower() == 'true':
 100             return True
 101         else:
 102             return False
 103     except NoOptionError:
 104         return False
 105
 106 def getOptres():
 107     try:
 108         return config.getboolean('Server', 'optres')
 109     except NoOptionError, ValueError:
 110         return False
 111
 112 def get(section, key):
 113     return config.get(section, key)
 114
 115 def getFFMPEGTemplate(tsn):
 116     if tsn and config.has_section('_tivo_' + tsn):
 117         try:
 118             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
 119         except NoOptionError:
 120             pass
 121     try:
 122         return config.get('Server', 'ffmpeg_prams', raw=True)
 123     except NoOptionError: #default
 124         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 -'
 125
 126 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 127     return tsn != '' and tsn[:3] in ['648', '652']
 128
 129 def getValidWidths():
 130     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 131
 132 def getValidHeights():
 133     return [1080, 720, 480] # Technically 240 is also supported
 134
 135 # Return the number in list that is nearest to x
 136 # if two values are equidistant, return the larger
 137 def nearest(x, list):
 138     return reduce(lambda a, b: closest(x, a, b), list)
 139
 140 def closest(x, a, b):
 141     if abs(x - a) < abs(x - b) or (abs(x - a) == abs(x - b) and a > b):
 142         return a
 143     else:
 144         return b
 145
 146 def nearestTivoHeight(height):
 147     return nearest(height, getValidHeights())
 148
 149 def nearestTivoWidth(width):
 150     return nearest(width, getValidWidths())
 151
 152 def getTivoHeight(tsn):
 153     if tsn and config.has_section('_tivo_' + tsn):
 154         try:
 155             height = config.getint('_tivo_' + tsn, 'height')
 156             return nearestTivoHeight(height)
 157         except NoOptionError:
 158             pass
 159     try:
 160         height = config.getint('Server', 'height')
 161         return nearestTivoHeight(height)
 162     except NoOptionError: #defaults for S3/S2 TiVo
 163         if isHDtivo(tsn):
 164             return 720
 165         else:
 166             return 480
 167
 168 def getTivoWidth(tsn):
 169     if tsn and config.has_section('_tivo_' + tsn):
 170         try:
 171             width = config.getint('_tivo_' + tsn, 'width')
 172             return nearestTivoWidth(width)
 173         except NoOptionError:
 174             pass
 175     try:
 176         width = config.getint('Server', 'width')
 177         return nearestTivoWidth(width)
 178     except NoOptionError: #defaults for S3/S2 TiVo
 179         if isHDtivo(tsn):
 180             return 1280
 181         else:
 182             return 544
 183
 184 def getAudioBR(tsn = None):
 185     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 186     #compare audio_br to max_audio_br and return lowest
 187     if tsn and config.has_section('_tivo_' + tsn):
 188         try:
 189             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 190             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 191         except NoOptionError:
 192             pass
 193     try:
 194         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 195         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 196     except NoOptionError: #defaults for S3/S2 TiVo
 197         if isHDtivo(tsn):
 198             return '384k'
 199         else:
 200             return '192k'
 201
 202 def getVideoBR(tsn = None):
 203     if tsn and config.has_section('_tivo_' + tsn):
 204         try:
 205             return config.get('_tivo_' + tsn, 'video_br')
 206         except NoOptionError:
 207             pass
 208     try:
 209         return config.get('Server', 'video_br')
 210     except NoOptionError: #defaults for S3/S2 TiVo
 211         if isHDtivo(tsn):
 212             return '8192k'
 213         else:
 214             return '4096K'
 215
 216 def getMaxVideoBR():
 217     try:
 218         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 219     except NoOptionError: #default to 17Mi
 220         return '17408k'
 221
 222 def getBuffSize():
 223     try:
 224         return str(int(strtod(config.get('Server', 'bufsize'))))
 225     except NoOptionError: #default 1024k
 226         return '1024k'
 227
 228 def getMaxAudioBR(tsn = None):
 229     #convert to non-zero multiple of 64 for ffmpeg compatibility
 230     if tsn and config.has_section('_tivo_' + tsn):
 231         try:
 232             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 233         except NoOptionError:
 234             pass
 235     try:
 236         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 237     except NoOptionError:
 238         return int(448) #default to 448
 239
 240 def str2tuple(s):
 241     items = s.split(',')
 242     L = [x.strip() for x in items]
 243     return tuple(L)
 244
 245 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 246 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 247 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 248 def strtod(value):
 249     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 250                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 251                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 252                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 253     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 254     m = p.match(value)
 255     if m is None:
 256         raise SyntaxError('Invalid bit value syntax')
 257     (coef, prefix, power, byte) = m.groups()
 258     if prefix is None:
 259         value = float(coef)
 260     else:
 261         exponent = float(prefixes[prefix])
 262         if power == 'i':
 263             # Use powers of 2
 264             value = float(coef) * pow(2.0, exponent / 0.3)
 265         else:
 266             # Use powers of 10
 267             value = float(coef) * pow(10.0, exponent)
 268     if byte == 'B': # B == Byte, b == bit
 269         value *= 8;
 270     return value