gr-vocoder: adds ulaw encoder, decoder, and audio loopback example

14 files changed, 406 insertions, 5 deletions

diff --git a/gr-vocoder/examples/Makefile.am b/gr-vocoder/examples/Makefile.am
index 69aa05e26..7cc469a99 100644
--- a/gr-vocoder/examples/Makefile.am
+++ b/gr-vocoder/examples/Makefile.am
@@ -26,4 +26,5 @@ ourdatadir = $(exampledir)/vocoder
 dist_ourdata_SCRIPTS = \
 	codec2_audio_loopback.py \
 	cvsd_audio_loopback.py \
-	gsm_audio_loopback.py
+	gsm_audio_loopback.py \
+	ulaw_audio_loopback.py
diff --git a/gr-vocoder/examples/ulaw_audio_loopback.py b/gr-vocoder/examples/ulaw_audio_loopback.py
new file mode 100755
index 000000000..afe0921fa
--- /dev/null
+++ b/gr-vocoder/examples/ulaw_audio_loopback.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+#
+# Copyright 2011 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
+from gnuradio import audio
+from gnuradio import vocoder
+
+def build_graph():
+    tb = gr.top_block()
+    src = audio.source(8000)
+    src_scale = gr.multiply_const_ff(32767)
+    f2s = gr.float_to_short ()
+    enc = vocoder.ulaw_encode_sb()
+    dec = vocoder.ulaw_decode_bs()
+    s2f = gr.short_to_float ()
+    sink_scale = gr.multiply_const_ff(1.0/32767.)
+    sink = audio.sink(8000)
+    tb.connect(src, src_scale, f2s, enc, dec, s2f, sink_scale, sink)
+    return tb
+
+if __name__ == '__main__':
+    tb = build_graph()
+    tb.start()
+    raw_input ('Press Enter to exit: ')
+    tb.stop()
+    tb.wait()
diff --git a/gr-vocoder/include/Makefile.am b/gr-vocoder/include/Makefile.am
index 472dd4f3c..495e1a827 100644
--- a/gr-vocoder/include/Makefile.am
+++ b/gr-vocoder/include/Makefile.am
@@ -28,4 +28,6 @@ grinclude_HEADERS = \
 	vocoder_cvsd_decode_bs.h \
 	vocoder_cvsd_encode_sb.h \
 	vocoder_gsm_fr_decode_ps.h \
-	vocoder_gsm_fr_encode_sp.h
+	vocoder_gsm_fr_encode_sp.h \
+	vocoder_ulaw_decode_bs.h \
+	vocoder_ulaw_encode_sb.h
diff --git a/gr-vocoder/include/vocoder_ulaw_decode_bs.h b/gr-vocoder/include/vocoder_ulaw_decode_bs.h
new file mode 100644
index 000000000..1126c6cb3
--- /dev/null
+++ b/gr-vocoder/include/vocoder_ulaw_decode_bs.h
@@ -0,0 +1,55 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+#ifndef INCLUDED_VOCODER_ULAW_DECODE_BS_H
+#define INCLUDED_VOCODER_ULAW_DECODE_BS_H
+
+#include <gr_sync_block.h>
+
+class vocoder_ulaw_decode_bs;
+
+typedef boost::shared_ptr<vocoder_ulaw_decode_bs> vocoder_ulaw_decode_bs_sptr;
+
+vocoder_ulaw_decode_bs_sptr vocoder_make_ulaw_decode_bs();
+
+/*!
+ * \brief This block performs ulaw audio decoding. 
+ *
+ * \ingroup vocoder_blk
+ */
+
+class vocoder_ulaw_decode_bs : public gr_sync_block
+{
+private:
+  friend vocoder_ulaw_decode_bs_sptr vocoder_make_ulaw_decode_bs();
+
+  vocoder_ulaw_decode_bs();
+
+ public:
+  ~vocoder_ulaw_decode_bs();
+
+  int work(int noutput_items,
+	   gr_vector_const_void_star &input_items,
+	   gr_vector_void_star &output_items);
+};
+
+#endif /* INCLUDED_VOCODER_ULAW_DECODE_BS_H */
diff --git a/gr-vocoder/include/vocoder_ulaw_encode_sb.h b/gr-vocoder/include/vocoder_ulaw_encode_sb.h
new file mode 100644
index 000000000..eddc4f4e5
--- /dev/null
+++ b/gr-vocoder/include/vocoder_ulaw_encode_sb.h
@@ -0,0 +1,54 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+#ifndef INCLUDED_VOCODER_ULAW_ENCODER_SB_H
+#define INCLUDED_VOCODER_ULAW_ENCODER_SB_H
+
+#include <gr_sync_block.h>
+
+class vocoder_ulaw_encode_sb;
+
+typedef boost::shared_ptr<vocoder_ulaw_encode_sb> vocoder_ulaw_encode_sb_sptr;
+
+vocoder_ulaw_encode_sb_sptr vocoder_make_ulaw_encode_sb();
+
+/*!
+ * \brief This block performs g.711 ulaw audio encoding. 
+ *
+ * \ingroup vocoder_blk
+ */
+class vocoder_ulaw_encode_sb : public gr_sync_block
+{
+private:
+  friend vocoder_ulaw_encode_sb_sptr vocoder_make_ulaw_encode_sb();
+
+  vocoder_ulaw_encode_sb();
+
+ public:
+  ~vocoder_ulaw_encode_sb();
+
+  int work(int noutput_items,
+	   gr_vector_const_void_star &input_items,
+	   gr_vector_void_star &output_items);
+};
+
+#endif /* INCLUDED_VOCODER_ULAW_ENCODE_SB_H */
diff --git a/gr-vocoder/lib/Makefile.am b/gr-vocoder/lib/Makefile.am
index 44ad67756..f5e3e2240 100644
--- a/gr-vocoder/lib/Makefile.am
+++ b/gr-vocoder/lib/Makefile.am
@@ -34,7 +34,9 @@ libgnuradio_vocoder_la_SOURCES = \
 	vocoder_cvsd_encode_sb.cc \
 	vocoder_cvsd_decode_bs.cc \
 	vocoder_gsm_fr_decode_ps.cc \
-	vocoder_gsm_fr_encode_sp.cc
+	vocoder_gsm_fr_encode_sp.cc \
+	vocoder_ulaw_decode_bs.cc \
+	vocoder_ulaw_encode_sb.cc
 
 libgnuradio_vocoder_la_LIBADD =	\
 	$(GNURADIO_CORE_LA) \
diff --git a/gr-vocoder/lib/vocoder_ulaw_decode_bs.cc b/gr-vocoder/lib/vocoder_ulaw_decode_bs.cc
new file mode 100644
index 000000000..3ade9d3f0
--- /dev/null
+++ b/gr-vocoder/lib/vocoder_ulaw_decode_bs.cc
@@ -0,0 +1,65 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <vocoder_ulaw_decode_bs.h>
+#include <gr_io_signature.h>
+#include <limits.h>
+
+extern "C" {
+#include "g7xx/g72x.h"
+}
+
+vocoder_ulaw_decode_bs_sptr vocoder_make_ulaw_decode_bs()
+{
+  return gnuradio::get_initial_sptr(new vocoder_ulaw_decode_bs());
+}
+
+vocoder_ulaw_decode_bs::vocoder_ulaw_decode_bs()
+  : gr_sync_block("vocoder_ulaw_decode_bs",
+		  gr_make_io_signature (1, 1, sizeof (unsigned char)),
+		  gr_make_io_signature (1, 1, sizeof (short)))
+{
+}
+
+vocoder_ulaw_decode_bs::~vocoder_ulaw_decode_bs()
+{
+}
+
+
+
+int 
+vocoder_ulaw_decode_bs::work(int noutput_items,
+			     gr_vector_const_void_star &input_items,
+			     gr_vector_void_star &output_items)
+{
+  const unsigned char *in = (const unsigned char *)input_items[0];
+  short *out = (short *)output_items[0];
+
+  for(int i = 0; i < noutput_items; i++)
+    out[i] = ulaw2linear(in[i]);
+  
+  return noutput_items;
+}
diff --git a/gr-vocoder/lib/vocoder_ulaw_encode_sb.cc b/gr-vocoder/lib/vocoder_ulaw_encode_sb.cc
new file mode 100644
index 000000000..19c53d72c
--- /dev/null
+++ b/gr-vocoder/lib/vocoder_ulaw_encode_sb.cc
@@ -0,0 +1,63 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <vocoder_ulaw_encode_sb.h>
+#include <gr_io_signature.h>
+#include <limits.h>
+
+extern "C" {
+#include "g7xx/g72x.h"
+}
+
+vocoder_ulaw_encode_sb_sptr vocoder_make_ulaw_encode_sb()
+{
+  return gnuradio::get_initial_sptr(new vocoder_ulaw_encode_sb());
+}
+
+vocoder_ulaw_encode_sb::vocoder_ulaw_encode_sb()
+  : gr_sync_block("vocoder_ulaw_encode_sb",
+		  gr_make_io_signature (1, 1, sizeof(short)),
+		  gr_make_io_signature (1, 1, sizeof(unsigned char)))
+{
+}
+
+vocoder_ulaw_encode_sb::~vocoder_ulaw_encode_sb()
+{
+}
+
+int 
+vocoder_ulaw_encode_sb::work(int noutput_items,
+			     gr_vector_const_void_star &input_items,
+			     gr_vector_void_star &output_items)
+{
+  const short *in = (const short *)input_items[0];
+  unsigned char *out = (unsigned char *)output_items[0];
+  
+  for(int i = 0; i < noutput_items; i++)
+    out[i] = linear2ulaw(in[i]);
+
+  return noutput_items;
+}
diff --git a/gr-vocoder/python/Makefile.am b/gr-vocoder/python/Makefile.am
index 1afbc9232..888dfbdf9 100644
--- a/gr-vocoder/python/Makefile.am
+++ b/gr-vocoder/python/Makefile.am
@@ -28,7 +28,8 @@ TESTS = run_tests
 noinst_PYTHON = \
 	qa_codec2_vocoder.py \
 	qa_cvsd_vocoder.py \
-	qa_gsm_full_rate.py
+	qa_gsm_full_rate.py \
+	qa_ulaw_vocoder.py
 
 vocoder_PYTHON = \
 	__init__.py \
diff --git a/gr-vocoder/python/qa_ulaw_vocoder.py b/gr-vocoder/python/qa_ulaw_vocoder.py
new file mode 100755
index 000000000..0e201638c
--- /dev/null
+++ b/gr-vocoder/python/qa_ulaw_vocoder.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+#
+# Copyright 2011 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, gr_unittest
+from vocoder_swig import *
+
+class test_ulaw_vocoder (gr_unittest.TestCase):
+
+    def setUp (self):
+        self.tb = gr.top_block()
+        
+    def tearDown (self):
+        self.tb = None
+
+    def test001_module_load (self):
+        enc = ulaw_encode_sb();
+        dec = ulaw_decode_bs();
+
+if __name__ == '__main__':
+    gr_unittest.run(test_ulaw_vocoder, "test_ulaw_vocoder.xml")
diff --git a/gr-vocoder/swig/Makefile.am b/gr-vocoder/swig/Makefile.am
index fbfd18c7c..53711656f 100644
--- a/gr-vocoder/swig/Makefile.am
+++ b/gr-vocoder/swig/Makefile.am
@@ -62,7 +62,9 @@ vocoder_swig_swiginclude_headers = \
 	vocoder_cvsd_decode_bs.i \
 	vocoder_cvsd_encode_sb.i \
 	vocoder_gsm_fr_encode_sp.i \
-	vocoder_gsm_fr_decode_ps.i
+	vocoder_gsm_fr_decode_ps.i \
+	vocoder_ulaw_decode_bs.i \
+	vocoder_ulaw_encode_sb.i
 
 vocoder_swig_swig_args = \
 	-I$(abs_top_builddir)/gr-vocoder/lib
diff --git a/gr-vocoder/swig/vocoder_swig.i b/gr-vocoder/swig/vocoder_swig.i
index 9edb0dc0c..72a7eace9 100644
--- a/gr-vocoder/swig/vocoder_swig.i
+++ b/gr-vocoder/swig/vocoder_swig.i
@@ -28,6 +28,8 @@
 %include "vocoder_cvsd_encode_sb.i"
 %include "vocoder_gsm_fr_encode_sp.i"
 %include "vocoder_gsm_fr_decode_ps.i"
+%include "vocoder_ulaw_decode_bs.i"
+%include "vocoder_ulaw_encode_sb.i"
 
 #if SWIGGUILE
 %scheme %{
diff --git a/gr-vocoder/swig/vocoder_ulaw_decode_bs.i b/gr-vocoder/swig/vocoder_ulaw_decode_bs.i
new file mode 100644
index 000000000..5e8e8c9ae
--- /dev/null
+++ b/gr-vocoder/swig/vocoder_ulaw_decode_bs.i
@@ -0,0 +1,35 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+%{
+#include "vocoder_ulaw_decode_bs.h"
+%}
+
+GR_SWIG_BLOCK_MAGIC(vocoder,ulaw_decode_bs);
+
+vocoder_ulaw_decode_bs_sptr vocoder_make_ulaw_decode_bs();
+
+class vocoder_ulaw_decode_bs : public gr_sync_block
+{
+private:
+  vocoder_ulaw_decode_bs();
+};
diff --git a/gr-vocoder/swig/vocoder_ulaw_encode_sb.i b/gr-vocoder/swig/vocoder_ulaw_encode_sb.i
new file mode 100644
index 000000000..1665df480
--- /dev/null
+++ b/gr-vocoder/swig/vocoder_ulaw_encode_sb.i
@@ -0,0 +1,35 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2011 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.
+ */
+
+%{
+#include "vocoder_ulaw_encode_sb.h"
+%}
+
+GR_SWIG_BLOCK_MAGIC(vocoder,ulaw_encode_sb);
+
+vocoder_ulaw_encode_sb_sptr vocoder_make_ulaw_encode_sb();
+
+class vocoder_ulaw_encode_sb : public gr_sync_block
+{
+private:
+  vocoder_ulaw_encode_sb();
+};