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             if config.get('_tivo_' + tsn, 'aspect169').lower() == 'true':
  35                 return True
  36             else:
  37                 return False
  38
  39     if tsn[:3] in BLACKLIST_169:
  40         return False
  41
  42     return True
  43
  44 def getShares():
  45     shares = [ (section, dict(config.items(section))) for section in config.sections() if not(section.startswith('_tivo_') or section == 'Server') ]
  46
  47     for name, data in shares:
  48         if not data.get('auto_subshares', 'False').lower() == 'true':
  49             continue
  50
  51         base_path = data['path']
  52         for item in os.listdir(base_path):
  53             item_path = os.path.join(base_path, item)
  54             if not os.path.isdir(item_path):
  55                 continue
  56
  57             new_name = name + '/' + item
  58             new_data = dict(data)
  59             new_data['path'] = item_path
  60
  61             shares.append( (new_name, new_data) )
  62
  63     return shares
  64
  65
  66 def getDebug():
  67     try:
  68         debug = config.get('Server', 'debug')
  69         if debug.lower() == 'true':
  70             return True
  71         else:
  72             return False
  73     except NoOptionError:
  74         return False
  75
  76 def getOptres():
  77     try:
  78         optres = config.get('Server', 'optres')
  79         if optres.lower() == 'true':
  80             return True
  81         else:
  82             return False
  83     except NoOptionError:
  84         return False
  85
  86 def get(section, key):
  87     return config.get(section, key)
  88
  89 def getFFMPEGTemplate(tsn):
  90     if tsn and config.has_section('_tivo_' + tsn):
  91         try:
  92             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw = True)
  93         except NoOptionError:
  94             pass
  95
  96     try:
  97         return config.get('Server', 'ffmpeg_prams', raw = True)
  98     except NoOptionError: #default
  99         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 %(audio_codec)s -ab %(audio_br)s -f vob -'
 100
 101 def getHDtivos():  # tsn's of High Definition Tivo's
 102     return ['648', '652']
 103
 104 def getValidWidths():
 105     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 106
 107 def getValidHeights():
 108     return [1080, 720, 480] # Technically 240 is also supported
 109
 110 # Return the number in list that is nearest to x
 111 # if two values are equidistant, return the larger
 112 def nearest(x, list):
 113     return reduce(lambda a, b: closest(x,a,b), list)
 114
 115 def closest(x,a, b):
 116     if abs(x-a) < abs(x-b) or (abs(x-a) == abs(x-b)and a>b):
 117         return a
 118     else:
 119         return b
 120
 121 def nearestTivoHeight(height):
 122     return nearest(height, getValidHeights())
 123
 124 def nearestTivoWidth(width):
 125     return nearest(width, getValidWidths())
 126
 127 def getTivoHeight(tsn):
 128     if tsn and config.has_section('_tivo_' + tsn):
 129         try:
 130             height = int(config.get('_tivo_' + tsn, 'height'))
 131             return nearestTivoHeight(height)
 132         except NoOptionError:
 133             pass
 134
 135     try:
 136         height = int(config.get('Server', 'height'))
 137         return nearestTivoHeight(height)
 138     except NoOptionError: #default
 139         return 480
 140
 141 def getTivoWidth(tsn):
 142     if tsn and config.has_section('_tivo_' + tsn):
 143         try:
 144             width = int(config.get('_tivo_' + tsn, 'width'))
 145             return nearestTivoWidth(width)
 146         except NoOptionError:
 147             pass
 148
 149     try:
 150         width = int(config.get('Server', 'width'))
 151         return nearestTivoWidth(width)
 152     except NoOptionError: #default
 153         return 544
 154
 155 def getAudioBR(tsn = None):
 156     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 157     #compare audio_br to max_audio_br and return lowest
 158     if tsn and config.has_section('_tivo_' + tsn):
 159         try:
 160             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 161             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 162         except NoOptionError:
 163             pass
 164
 165     try:
 166         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 167         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 168     except NoOptionError: #default to 192
 169         return '192k'
 170
 171 def getAudioCodec(tsn = None):
 172     #check for HD tivo and return compatible audio parameters
 173     if tsn and tsn[:3] in getHDtivos():
 174         return '-acodec ac3 -ar 48000'
 175     else:
 176         return '-acodec mp2 -ac 2 -ar 44100'
 177
 178 def getVideoBR(tsn = None):
 179     if tsn and config.has_section('_tivo_' + tsn):
 180         try:
 181             return config.get('_tivo_' + tsn, 'video_br')
 182         except NoOptionError:
 183             pass
 184
 185     try:
 186         return config.get('Server', 'video_br')
 187     except NoOptionError: #default to 4096K
 188         return '4096K'
 189
 190 def getMaxVideoBR():
 191     try:
 192         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 193     except NoOptionError: #default to 17Mi
 194         return '17408k'
 195
 196 def getBuffSize():
 197     try:
 198         return config.get('Server', 'bufsize')
 199     except NoOptionError: #default 1024k
 200         return '1024k'
 201
 202 def getMaxAudioBR(tsn = None):
 203     #convert to non-zero multiple of 64 for ffmpeg compatibility
 204     if tsn and config.has_section('_tivo_' + tsn):
 205         try:
 206             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 207         except NoOptionError:
 208             pass
 209
 210     try:
 211         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 212     except NoOptionError:
 213         if tsn and tsn[:3] in getHDtivos():
 214             return int(448) #default to 448, max supported by HD TiVo's
 215         else:
 216             return int(384) #default to 384, max supported by mp2 audio (S2 TiVo)
 217
 218
 219 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 220 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 221 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 222 def strtod(value):
 223     prefixes = {"y":-24,"z":-21,"a":-18,"f":-15,"p":-12,"n":-9,"u":-6,"m":-3,"c":-2,"d":-1,"h":2,"k":3,"K":3,"M":6,"G":9,"T":12,"P":15,"E":18,"Z":21,"Y":24}
 224     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 225     m = p.match(value)
 226     if m is None:
 227         raise SyntaxError('Invalid bit value syntax')
 228     (coef, prefix, power, byte) = m.groups()
 229     if prefix is None:
 230         value = float(coef)
 231     else:
 232         exponent = float(prefixes[prefix])
 233         if power == "i":
 234             # Use powers of 2
 235             value = float(coef) * pow(2.0, exponent/0.3)
 236         else:
 237             # Use powers of 10
 238             value = float(coef) * pow(10.0, exponent)
 239     if byte == "B": # B==Byte, b=bit
 240         value *= 8;
 241     return value