Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-examples / python / digital_voice / cvsd_test.py

diff --git a/gnuradio-examples/python/digital_voice/cvsd_test.py b/gnuradio-examples/python/digital_voice/cvsd_test.py
new file mode 100755 (executable)
index 0000000..f8f1b9c
--- /dev/null
+++ b/gnuradio-examples/python/digital_voice/cvsd_test.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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, blks2
+from gnuradio import audio
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+def main():
+    parser = OptionParser(option_class=eng_option)
+    parser.add_option("-I", "--audio-input", type="string", default="",
+                      help="pcm input device name.  E.g., hw:0,0 or /dev/dsp")
+    parser.add_option("-O", "--audio-output", type="string", default="",
+                      help="pcm output device name.  E.g., hw:0,0 or /dev/dsp")
+    parser.add_option("-r", "--sample-rate", type="eng_float", default="32000",
+                      help="Audio sampling rate [defaul=%default]")
+    parser.add_option("-S", "--resample-rate", type="int", default="8",
+                      help="Resampling rate in CVSD [default=%default]")
+    (options, args) = parser.parse_args ()
+
+    if len(args) != 0:
+        parser.print_help()
+        raise SystemExit, 1
+
+    tb = gr.top_block()
+
+    src = audio.source(int(options.sample_rate), options.audio_input)
+    tx = blks2.cvsd_encode(options.resample_rate)
+
+    # todo: add noise
+
+    rx = blks2.cvsd_decode(options.resample_rate)
+    dst = audio.sink(int(options.sample_rate), options.audio_output)
+    
+    tb.connect(src, tx, rx, dst)    
+    tb.run()
+    
+if __name__ == '__main__':
+    print "Enter CTRL-C to exit"
+    try:
+        main()
+    except KeyboardInterrupt:
+        pass
+