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)))
  46               for section in config.sections()
  47               if not(section.startswith('_tivo_') or section == 'Server')]
  48
  49     for name, data in shares:
  50         if not data.get('auto_subshares', 'False').lower() == 'true':
  51             continue
  52
  53         base_path = data['path']
  54         for item in os.listdir(base_path):
  55             item_path = os.path.join(base_path, item)
  56             if not os.path.isdir(item_path):
  57                 continue
  58
  59             new_name = name + '/' + item
  60             new_data = dict(data)
  61             new_data['path'] = item_path
  62
  63             shares.append((new_name, new_data))
  64
  65     return shares
  66
  67 def getDebug():
  68     try:
  69         return config.getboolean('Server', 'debug')
  70     except NoOptionError, ValueError:
  71         return False
  72
  73 def getHack83():
  74     try:
  75         debug = config.get('Server', 'hack83')
  76         if debug.lower() == 'true':
  77             return True
  78         else:
  79             return False
  80     except NoOptionError:
  81         return False
  82
  83 def getOptres():
  84     try:
  85         return config.getboolean('Server', 'optres')
  86     except NoOptionError, ValueError:
  87         return False
  88
  89 def get(section, key):
  90     return config.get(section, key)
  91
  92 def getFFMPEGTemplate(tsn):
  93     if tsn and config.has_section('_tivo_' + tsn):
  94         try:
  95             return config.get('_tivo_' + tsn, 'ffmpeg_prams', raw=True)
  96         except NoOptionError:
  97             pass
  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     try:
 137         height = config.getint('Server', 'height')
 138         return nearestTivoHeight(height)
 139     except NoOptionError: #default
 140         return 480
 141
 142 def getTivoWidth(tsn):
 143     if tsn and config.has_section('_tivo_' + tsn):
 144         try:
 145             width = config.getint('_tivo_' + tsn, 'width')
 146             return nearestTivoWidth(width)
 147         except NoOptionError:
 148             pass
 149     try:
 150         width = config.getint('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     try:
 165         audiobr = int(max(int(strtod(config.get('Server', 'audio_br'))/1000), 64)/64)*64
 166         return str(min(audiobr, getMaxAudioBR(tsn))) + 'k'
 167     except NoOptionError: #default to 192
 168         return '192k'
 169
 170 def getAudioCodec(tsn = None):
 171     #check for HD tivo and return compatible audio parameters
 172     if tsn and tsn[:3] in getHDtivos():
 173         return '-acodec ac3 -ar 48000'
 174     else:
 175         return '-acodec mp2 -ac 2 -ar 44100'
 176
 177 def getVideoBR(tsn = None):
 178     if tsn and config.has_section('_tivo_' + tsn):
 179         try:
 180             return config.get('_tivo_' + tsn, 'video_br')
 181         except NoOptionError:
 182             pass
 183     try:
 184         return config.get('Server', 'video_br')
 185     except NoOptionError: #default to 4096K
 186         return '4096K'
 187
 188 def getMaxVideoBR():
 189     try:
 190         return str(int(strtod(config.get('Server', 'max_video_br'))/1000)) + 'k'
 191     except NoOptionError: #default to 17Mi
 192         return '17408k'
 193
 194 def getBuffSize():
 195     try:
 196         return config.get('Server', 'bufsize')
 197     except NoOptionError: #default 1024k
 198         return '1024k'
 199
 200 def getMaxAudioBR(tsn = None):
 201     #convert to non-zero multiple of 64 for ffmpeg compatibility
 202     if tsn and config.has_section('_tivo_' + tsn):
 203         try:
 204             return int(int(strtod(config.get('_tivo_' + tsn, 'max_audio_br'))/1000)/64)*64
 205         except NoOptionError:
 206             pass
 207     try:
 208         return int(int(strtod(config.get('Server', 'max_audio_br'))/1000)/64)*64
 209     except NoOptionError:
 210         if tsn and tsn[:3] in getHDtivos():
 211             return int(448) #default to 448, max supported by HD TiVo's
 212         else:
 213             return int(384) #default to 384, max supported by mp2 audio (S2 TiVo)
 214
 215 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 216 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 217 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 218 def strtod(value):
 219     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 220                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 221                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 222                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 223     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 224     m = p.match(value)
 225     if m is None:
 226         raise SyntaxError('Invalid bit value syntax')
 227     (coef, prefix, power, byte) = m.groups()
 228     if prefix is None:
 229         value = float(coef)
 230     else:
 231         exponent = float(prefixes[prefix])
 232         if power == 'i':
 233             # Use powers of 2
 234             value = float(coef) * pow(2.0, exponent / 0.3)
 235         else:
 236             # Use powers of 10
 237             value = float(coef) * pow(10.0, exponent)
 238     if byte == 'B': # B == Byte, b == bit
 239         value *= 8;
 240     return value