1 files changed, 69 insertions, 0 deletions
diff --git a/gr-vocoder/lib/vocoder_gsm_fr_encode_sp.cc b/gr-vocoder/lib/vocoder_gsm_fr_encode_sp.cc
new file mode 100644
index 000000000..7a69b856d
--- /dev/null
+++ b/gr-vocoder/lib/vocoder_gsm_fr_encode_sp.cc
@@ -0,0 +1,69 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2010 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "vocoder_gsm_fr_encode_sp.h"
+extern "C"{
+#include "gsm/gsm.h"
+}
+#include <gr_io_signature.h>
+#include <stdexcept>
+
+vocoder_gsm_fr_encode_sp_sptr
+vocoder_make_gsm_fr_encode_sp ()
+{
+  return gnuradio::get_initial_sptr(new vocoder_gsm_fr_encode_sp ());
+}
+
+vocoder_gsm_fr_encode_sp::vocoder_gsm_fr_encode_sp ()
+  : gr_sync_decimator ("vocoder_gsm_fr_encode_sp",
+		       gr_make_io_signature (1, 1, sizeof (short)),
+		       gr_make_io_signature (1, 1, sizeof (gsm_frame)),
+		       GSM_SAMPLES_PER_FRAME)
+{
+  if ((d_gsm = gsm_create ()) == 0)
+    throw std::runtime_error ("vocoder_gsm_fr_encode_sp: gsm_create failed");
+}
+
+vocoder_gsm_fr_encode_sp::~vocoder_gsm_fr_encode_sp ()
+{
+  gsm_destroy (d_gsm);
+}
+
+int
+vocoder_gsm_fr_encode_sp::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++){
+    gsm_encode (d_gsm, const_cast<short*>(in), out);
+    in += GSM_SAMPLES_PER_FRAME;
+    out += sizeof (gsm_frame);
+  }
+
+  return noutput_items;
+}