2 Copyright 2008, 2009 Free Software Foundation, Inc.
3 This file is part of GNU Radio
5 GNU Radio Companion is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 GNU Radio Companion is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
20 from .. base.Port import Port as _Port
26 TYPES = ['complex', 'float', 'int', 'short', 'byte', 'msg']
28 def __init__(self, block, n):
30 Make a new port from nested data.
31 @param block the parent element
32 @param n the nested odict
40 self._nports = n.find('nports') or ''
41 self._vlen = n.find('vlen') or '1'
42 self._optional = bool(n.find('optional'))
46 try: assert self.get_enabled_connections() or self.get_optional()
47 except AssertionError: self.add_error_message('Port is not connected.')
48 try: assert self.is_source() or len(self.get_enabled_connections()) <= 1
49 except AssertionError: self.add_error_message('Port has too many connections.')
53 Get the vector length.
54 If the evaluation of vlen cannot be cast to an integer, return 1.
55 @return the vector length or 1
57 vlen = self.get_parent().resolve_dependencies(self._vlen)
58 try: return int(self.get_parent().get_parent().evaluate(vlen))
63 Get the number of ports.
64 If already blank, return a blank
65 If the evaluation of nports cannot be cast to an integer, return 1.
66 @return the number of ports or 1
68 nports = self.get_parent().resolve_dependencies(self._nports)
69 #return blank if nports is blank
70 if not nports: return ''
72 nports = int(self.get_parent().get_parent().evaluate(nports))
77 def get_optional(self): return bool(self._optional)
81 Get the color that represents this port's type.
82 Codes differ for ports where the vec length is 1 or greater than 1.
83 @return a hex color code.
86 if self.get_vlen() == 1:
88 'complex': Constants.COMPLEX_COLOR_SPEC,
89 'float': Constants.FLOAT_COLOR_SPEC,
90 'int': Constants.INT_COLOR_SPEC,
91 'short': Constants.SHORT_COLOR_SPEC,
92 'byte': Constants.BYTE_COLOR_SPEC,
93 'msg': Constants.MSG_COLOR_SPEC,
95 return {#vlen is non 1
96 'complex': Constants.COMPLEX_VECTOR_COLOR_SPEC,
97 'float': Constants.FLOAT_VECTOR_COLOR_SPEC,
98 'int': Constants.INT_VECTOR_COLOR_SPEC,
99 'short': Constants.SHORT_VECTOR_COLOR_SPEC,
100 'byte': Constants.BYTE_VECTOR_COLOR_SPEC,
102 except: return _Port.get_color(self)
106 def __init__(self, block, n):
108 if n['type'] != 'msg': #key is port index
109 n['key'] = str(block._source_count)
110 block._source_count = block._source_count + 1
111 Port.__init__(self, block, n)
114 self.get_parent()._source_count = self.get_parent()._source_count - 1
118 def __init__(self, block, n):
120 if n['type'] != 'msg': #key is port index
121 n['key'] = str(block._sink_count)
122 block._sink_count = block._sink_count + 1
123 Port.__init__(self, block, n)
126 self.get_parent()._sink_count = self.get_parent()._sink_count - 1
128 #TODO merge source and sink classes into port class
129 #TODO check that key is only defined if and only if type is message
130 #TODO check that nports is undefined when type is message