Merge remote branch 'gnuradio/wip/udp_source_sink'

[debian/gnuradio] / grc / python / Port.py

diff --git a/grc/python/Port.py b/grc/python/Port.py
index daf8f9ca34c1f687fffc3e54dac26af3dc35b6e3..6965371df8a9e922dbeb808d78da53bf93c81a59 100644 (file)
--- a/grc/python/Port.py
+++ b/grc/python/Port.py
@@ -18,41 +18,100 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 """
 
 from .. base.Port import Port as _Port
+from .. gui.Port import Port as _GUIPort
 import Constants
 
-class Port(_Port):
-
-       ##possible port types
-       TYPES = ['complex', 'float', 'int', 'short', 'byte', 'msg']
-
-       def __init__(self, block, n):
+def _get_source_from_virtual_sink_port(vsp):
+       """
+       Resolve the source port that is connected to the given virtual sink port.
+       Use the get source from virtual source to recursively resolve subsequent ports. 
+       """
+       try: return _get_source_from_virtual_source_port(
+               vsp.get_enabled_connections()[0].get_source())
+       except: raise Exception, 'Could not resolve source for virtual sink port %s'%vsp
+
+def _get_source_from_virtual_source_port(vsp, traversed=[]):
+       """
+       Recursively resolve source ports over the virtual connections.
+       Keep track of traversed sources to avoid recursive loops.
+       """
+       if not vsp.get_parent().is_virtual_source(): return vsp
+       if vsp in traversed: raise Exception, 'Loop found when resolving virtual source %s'%vsp
+       try: return _get_source_from_virtual_source_port(
+               _get_source_from_virtual_sink_port(
+                       filter(#get all virtual sinks with a matching stream id
+                               lambda vs: vs.get_param('stream_id').get_value() == vsp.get_parent().get_param('stream_id').get_value(),
+                               filter(#get all enabled blocks that are also virtual sinks
+                                       lambda b: b.is_virtual_sink(),
+                                       vsp.get_parent().get_parent().get_enabled_blocks(),
+                               ),
+                       )[0].get_sinks()[0]
+               ), traversed + [vsp],
+       )
+       except: raise Exception, 'Could not resolve source for virtual source port %s'%vsp
+
+class Port(_Port, _GUIPort):
+
+       def __init__(self, block, n, dir):
                """
                Make a new port from nested data.
                @param block the parent element
                @param n the nested odict
+               @param dir the direction
                """
+               self._n = n
+               if n['type'] == 'msg': n['key'] = 'msg'
+               if dir == 'source' and not n.find('key'):
+                       n['key'] = str(block._source_count)
+                       block._source_count += 1
+               if dir == 'sink' and not n.find('key'):
+                       n['key'] = str(block._sink_count)
+                       block._sink_count += 1
                #build the port
                _Port.__init__(
                        self,
                        block=block,
                        n=n,
+                       dir=dir,
                )
+               _GUIPort.__init__(self)
                self._nports = n.find('nports') or ''
                self._vlen = n.find('vlen') or ''
                self._optional = bool(n.find('optional'))
 
+       def get_types(self): return ('complex', 'float', 'int', 'short', 'byte', 'msg', '')
+
        def validate(self):
                _Port.validate(self)
                try: assert self.get_enabled_connections() or self.get_optional()
                except AssertionError: self.add_error_message('Port is not connected.')
                try: assert self.is_source() or len(self.get_enabled_connections()) <= 1
                except AssertionError: self.add_error_message('Port has too many connections.')
+               #message port logic
                if self.get_type() == 'msg':
                        try: assert not self.get_nports()
                        except AssertionError: self.add_error_message('A port of type "msg" cannot have "nports" set.')
                        try: assert self.get_vlen() == 1
                        except AssertionError: self.add_error_message('A port of type "msg" must have a "vlen" of 1.')
 
+       def rewrite(self):
+               """
+               Handle the port cloning for virtual blocks.
+               """
+               _Port.rewrite(self)
+               if self.get_parent().is_virtual_sink() or self.get_parent().is_virtual_source():
+                       try: #clone type and vlen
+                               source = self.resolve_virtual_source()
+                               self._type = str(source.get_type())
+                               self._vlen = str(source.get_vlen())
+                       except: #reset type and vlen
+                               self._type = ''
+                               self._vlen = ''
+
+       def resolve_virtual_source(self):
+               if self.get_parent().is_virtual_sink(): return _get_source_from_virtual_sink_port(self)
+               if self.get_parent().is_virtual_source(): return _get_source_from_virtual_source_port(self)
+
        def get_vlen(self):
                """
                Get the vector length.
@@ -109,24 +168,4 @@ class Port(_Port):
        def copy(self, new_key=None):
                n = self._n.copy()
                if new_key: n['key'] = new_key
-               return self.__class__(self.get_parent(), n)
-
-class Source(Port):
-
-       def __init__(self, block, n):
-               self._n = n #save n
-               if n['type'] == 'msg': n['key'] = 'msg'
-               if not n.find('key'):
-                       n['key'] = str(block._source_count)
-                       block._source_count = block._source_count + 1
-               Port.__init__(self, block, n)
-
-class Sink(Port):
-
-       def __init__(self, block, n):
-               self._n = n #save n
-               if n['type'] == 'msg': n['key'] = 'msg'
-               if not n.find('key'):
-                       n['key'] = str(block._sink_count)
-                       block._sink_count = block._sink_count + 1
-               Port.__init__(self, block, n)
+               return self.__class__(self.get_parent(), n, self._dir)