add unpack.py, fix dirs

op25/gr-op25_repeater/apps/tx/unpack.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+from gnuradio import gr, gru, audio, eng_notation, blocks
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+class app_top_block(gr.top_block):
+    def __init__(self, options):
+        gr.top_block.__init__(self)
+
+        IN = blocks.file_source(gr.sizeof_char, options.input_file)
+        bits_per_symbol = 2
+        UNPACK = blocks.packed_to_unpacked_bb(bits_per_symbol, gr.GR_MSB_FIRST)
+        OUT = blocks.file_sink(gr.sizeof_char, options.output)
+
+        self.connect(IN, UNPACK, OUT)
+
+def main():
+    parser = OptionParser(option_class=eng_option)
+    parser.add_option("-i", "--input-file", type="string", default="in.dat", help="specify the input file")
+    parser.add_option("-o", "--output", type="string", default="out.dat", help="specify the output file")
+
+    (options, args) = parser.parse_args()
+ 
+    tb = app_top_block(options)
+    try:
+        tb.run()
+    except KeyboardInterrupt:
+        tb.stop()
+
+if __name__ == "__main__":
+    main()