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():
  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         return config.getboolean('Server', 'debug')
  69     except NoOptionError, ValueError:
  70         return False
  71
  72 def getHack83():
  73     try:
  74         debug = config.get('Server', 'hack83')
  75         if debug.lower() == 'true':
  76             return True
  77         else:
  78             return False
  79     except NoOptionError:
  80         return False
  81
  82 def getOptres():
  83     try:
  84         return config.getboolean('Server', 'optres')
  85     except NoOptionError, ValueError:
  86         return False
  87
  88 def get(section, key):
  89     return config.get(section, key)
  90
  91 def getFFMPEGTemplate(tsn):
  92     if tsn and config.has_section('_tivo_' + tsn):
  93         try:
  94             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
  95         except NoOptionError:
  96             pass
  97
  98     try:
  99         return config.get('Server', 'ffmpeg_prams', raw=True)
 100     except NoOptionError: #default
 101         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 -'
 102
 103 def getHDtivos():  # tsn's of High Definition Tivo's
 104     return ['648', '652']
 105
 106 def getValidWidths():
 107     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 108
 109 def getValidHeights():
 110     return [1080, 720, 480] # Technically 240 is also supported
 111
 112 # Return the number in list that is nearest to x
 113 # if two values are equidistant, return the larger
 114 def nearest(x, list):
 115     return reduce(lambda a, b: closest(x,a,b), list)
 116
 117 def closest(x,a, b):
 118     if abs(x-a) < abs(x-b) or (abs(x-a) == abs(x-b)and a>b):
 119         return a
 120     else:
 121         return b
 122
 123 def nearestTivoHeight(height):
 124     return nearest(height, getValidHeights())
 125
 126 def nearestTivoWidth(width):
 127     return nearest(width, getValidWidths())
 128
 129 def getTivoHeight(tsn):
 130     if tsn and config.has_section('_tivo_' + tsn):
 131         try:
 132             height = config.getint('_tivo_' + tsn, 'height')
 133             return nearestTivoHeight(height)
 134         except NoOptionError:
 135             pass
 136
 137     try:
 138         height = config.getint('Server', 'height')
 139         return nearestTivoHeight(height)
 140     except NoOptionError: #default
 141         return 480
 142
 143 def getTivoWidth(tsn):
 144     if tsn and config.has_section('_tivo_' + tsn):
 145         try:
 146             width = config.getint('_tivo_' + tsn, 'width')
 147             return nearestTivoWidth(width)
 148         except NoOptionError:
 149             pass
 150
 151     try:
 152         width = config.getint('Server', 'width')
 153         return nearestTivoWidth(width)
 154     except NoOptionError: #default
 155         return 544
 156
 157 def getAudioBR(tsn = None):
 158     #convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 159     #compare audio_br to max_audio_br and return lowest
 160     if tsn and config.has_section('_tivo_' + tsn):
 161         try:
 162             audiobr = int(max(int(strtod(config.get('_tivo_' + tsn, 'audio_br'))/1000), 64)/64)*64
 163             return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 164         except NoOptionError:
 165             pass
 166
 167     try:
 168         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 169         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 170     except NoOptionError: #default to 192
 171         return '192k'
 172
 173 def getAudioCodec(tsn = None):
 174     #check for HD tivo and return compatible audio parameters
 175     if tsn and tsn[:3] in getHDtivos():
 176         return '-acodec ac3 -ar 48000'
 177     else:
 178         return '-acodec mp2 -ac 2 -ar 44100'
 179
 180 def getVideoBR(tsn = None):
 181     if tsn and config.has_section('_tivo_' + tsn):
 182         try:
 183             return config.get('_tivo_' + tsn, 'video_br')
 184         except NoOptionError:
 185             pass
 186
 187     try:
 188         return config.get('Server', 'video_br')
 189     except NoOptionError: #default to 4096K
 190         return '4096K'
 191
 192 def getMaxVideoBR():
 193     try:
 194         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 195     except NoOptionError: #default to 17Mi
 196         return '17408k'
 197
 198 def getBuffSize():
 199     try:
 200         return config.get('Server', 'bufsize')
 201     except NoOptionError: #default 1024k
 202         return '1024k'
 203
 204 def getMaxAudioBR(tsn = None):
 205     #convert to non-zero multiple of 64 for ffmpeg compatibility
 206     if tsn and config.has_section('_tivo_' + tsn):
 207         try:
 208             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 209         except NoOptionError:
 210             pass
 211
 212     try:
 213         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 214     except NoOptionError:
 215         if tsn and tsn[:3] in getHDtivos():
 216             return int(448) #default to 448, max supported by HD TiVo's
 217         else:
 218             return int(384) #default to 384, max supported by mp2 audio (S2 TiVo)
 219
 220
 221 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 222 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 223 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 224 def strtod(value):
 225     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}
 226     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 227     m = p.match(value)
 228     if m is None:
 229         raise SyntaxError('Invalid bit value syntax')
 230     (coef, prefix, power, byte) = m.groups()
 231     if prefix is None:
 232         value = float(coef)
 233     else:
 234         exponent = float(prefixes[prefix])
 235         if power == "i":
 236             # Use powers of 2
 237             value = float(coef) * pow(2.0, exponent/0.3)
 238         else:
 239             # Use powers of 10
 240             value = float(coef) * pow(10.0, exponent)
 241     if byte == "B": # B==Byte, b=bit
 242         value *= 8;
 243     return value