Merge branch 'dfsg-orig'

[debian/gnuradio] / gnuradio-core / src / python / gnuradio / blks2impl / pfb_channelizer.py

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py
new file mode 100644 (file)
index 0000000..a479ed4
--- /dev/null
+++ b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+#
+# Copyright 2009,2010 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+from gnuradio import gr
+
+class pfb_channelizer_ccf(gr.hier_block2):
+    '''
+    Make a Polyphase Filter channelizer (complex in, complex out, floating-point taps)
+
+    This simplifies the interface by allowing a single input stream to connect to this block.
+    It will then output a stream for each channel.
+    '''
+    def __init__(self, numchans, taps, oversample_rate=1):
+       gr.hier_block2.__init__(self, "pfb_channelizer_ccf",
+                               gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
+                               gr.io_signature(numchans, numchans, gr.sizeof_gr_complex)) # Output signature
+
+        self._numchans = numchans
+        self._taps = taps
+        self._oversample_rate = oversample_rate
+
+        self.s2ss = gr.stream_to_streams(gr.sizeof_gr_complex, self._numchans)
+        self.pfb = gr.pfb_channelizer_ccf(self._numchans, self._taps,
+                                          self._oversample_rate)
+        self.v2s = gr.vector_to_streams(gr.sizeof_gr_complex, self._numchans)
+
+        self.connect(self, self.s2ss)
+
+        for i in xrange(self._numchans):
+            self.connect((self.s2ss,i), (self.pfb,i))
+
+        # Get independent streams from the filterbank and send them out
+        self.connect(self.pfb, self.v2s)
+
+        for i in xrange(self._numchans):
+            self.connect((self.v2s,i), (self,i))
+
+        
+        
+