Imported Upstream version 3.2.2

[debian/gnuradio] / grc / grc_gnuradio / blks2 / probe.py

diff --git a/grc/grc_gnuradio/blks2/probe.py b/grc/grc_gnuradio/blks2/probe.py
new file mode 100644 (file)
index 0000000..8db81f0
--- /dev/null
+++ b/grc/grc_gnuradio/blks2/probe.py
@@ -0,0 +1,123 @@
+#
+# Copyright 2008 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
+import threading
+import numpy
+import time
+
+#######################################################################################
+## Probe: Function
+#######################################################################################
+class probe_function(gr.hier_block2, threading.Thread):
+       """
+       The thread polls the function for values and writes to a message source.
+       """
+
+       def __init__(self, probe_callback, probe_rate):
+               #init hier block
+               gr.hier_block2.__init__(
+                       self, 'probe_function',
+                       gr.io_signature(0, 0, 0),
+                       gr.io_signature(1, 1, gr.sizeof_float),
+               )
+               self._probe_callback = probe_callback
+               self.set_probe_rate(probe_rate)
+               #create message source
+               message_source = gr.message_source(gr.sizeof_float, 1)
+               self._msgq = message_source.msgq()
+               #connect
+               self.connect(message_source, self)
+               #setup thread
+               threading.Thread.__init__(self)
+               self.setDaemon(True)
+               self.start()
+
+       def run(self):
+               """
+               Infinite polling loop.
+               """
+               while True:
+                       time.sleep(1.0/self._probe_rate)
+                       arr = numpy.array(self._probe_callback(), numpy.float32)
+                       msg = gr.message_from_string(arr.tostring(), 0, gr.sizeof_float, 1)
+                       self._msgq.insert_tail(msg)
+
+       def set_probe_rate(self, probe_rate):
+               self._probe_rate = probe_rate
+
+class _probe_base(gr.hier_block2):
+       def __init__(self, probe_block, probe_callback, probe_rate):
+               #init hier block
+               gr.hier_block2.__init__(
+                       self, 'probe',
+                       gr.io_signature(1, 1, probe_block.input_signature().sizeof_stream_items()[0]),
+                       gr.io_signature(1, 1, gr.sizeof_float),
+               )
+               probe_function_block = probe_function(probe_callback, probe_rate)
+               #forward callbacks
+               self.set_probe_rate = probe_function_block.set_probe_rate
+               #connect
+               self.connect(self, probe_block)
+               self.connect(probe_function_block, self)
+
+#######################################################################################
+## Probe: Average Magnitude Squared
+#######################################################################################
+class _probe_avg_mag_sqrd_base(_probe_base):
+       def __init__(self, threshold, alpha, probe_rate):
+               #create block
+               probe_block = self._probe_block_contructor[0](threshold, alpha)
+               #forward callbacks
+               self.set_alpha = probe_block.set_alpha
+               self.set_threshold = probe_block.set_threshold
+               #init
+               _probe_base.__init__(self, probe_block, probe_block.level, probe_rate)
+
+class probe_avg_mag_sqrd_c(_probe_avg_mag_sqrd_base): _probe_block_contructor = (gr.probe_avg_mag_sqrd_c,)
+class probe_avg_mag_sqrd_f(_probe_avg_mag_sqrd_base): _probe_block_contructor = (gr.probe_avg_mag_sqrd_f,)
+
+#######################################################################################
+## Probe: Density
+#######################################################################################
+class probe_density_b(_probe_base):
+       def __init__(self, alpha, probe_rate):
+               #create block
+               probe_block = gr.probe_density_b(alpha)
+               #forward callbacks
+               self.set_alpha = probe_block.set_alpha
+               #init
+               _probe_base.__init__(self, probe_block, probe_block.density, probe_rate)
+
+#######################################################################################
+## Probe: MPSK SNR
+#######################################################################################
+class probe_mpsk_snr_c(_probe_base):
+       def __init__(self, type, alpha, probe_rate):
+               """
+               Type can be "snr", "signal_mean", or "noise_variance" 
+               """
+               #create block
+               probe_block = gr.probe_mpsk_snr_c(alpha)
+               #forward callbacks
+               self.set_alpha = probe_block.set_alpha
+               #init
+               _probe_base.__init__(self, probe_block, getattr(probe_block, type), probe_rate)