From 6454b7f23db35e87d7ab9a6d7a266e846277191e Mon Sep 17 00:00:00 2001
From: Achilleas Anastasopoulos
Date: Sun, 20 Feb 2011 10:13:46 -0500
Subject: added sccc_decoder block (without the metrics part)

---
 gr-trellis/src/lib/.gitignore                  |   9 ++
 gr-trellis/src/lib/Makefile.am                 |   3 +
 gr-trellis/src/lib/core_algorithms.cc          | 134 +++++++++++++++++++++++++
 gr-trellis/src/lib/core_algorithms.h           |   9 ++
 gr-trellis/src/lib/generate_trellis.py         |   2 +
 gr-trellis/src/lib/trellis_sccc_decoder_X.cc.t | 123 +++++++++++++++++++++++
 gr-trellis/src/lib/trellis_sccc_decoder_X.h.t  | 102 +++++++++++++++++++
 gr-trellis/src/lib/trellis_sccc_decoder_X.i.t  |  60 +++++++++++
 8 files changed, 442 insertions(+)
 create mode 100644 gr-trellis/src/lib/trellis_sccc_decoder_X.cc.t
 create mode 100644 gr-trellis/src/lib/trellis_sccc_decoder_X.h.t
 create mode 100644 gr-trellis/src/lib/trellis_sccc_decoder_X.i.t

(limited to 'gr-trellis/src/lib')

diff --git a/gr-trellis/src/lib/.gitignore b/gr-trellis/src/lib/.gitignore
index 1ded7cffe..2a544a56f 100644
--- a/gr-trellis/src/lib/.gitignore
+++ b/gr-trellis/src/lib/.gitignore
@@ -131,6 +131,15 @@
 /trellis_sccc_decoder_combined_ci.h
 /trellis_sccc_decoder_combined_ci.i
 /trellis_sccc_decoder_combined_ci.cc
+/trellis_sccc_decoder_b.h
+/trellis_sccc_decoder_b.i
+/trellis_sccc_decoder_b.cc
+/trellis_sccc_decoder_s.h
+/trellis_sccc_decoder_s.i
+/trellis_sccc_decoder_s.cc
+/trellis_sccc_decoder_i.h
+/trellis_sccc_decoder_i.i
+/trellis_sccc_decoder_i.cc
 /trellis_generated.i
 /generate-stamp
 /stamp-*
diff --git a/gr-trellis/src/lib/Makefile.am b/gr-trellis/src/lib/Makefile.am
index 809efdcb3..5b47c5a32 100644
--- a/gr-trellis/src/lib/Makefile.am
+++ b/gr-trellis/src/lib/Makefile.am
@@ -44,6 +44,9 @@ core_generator = 				\
 	trellis_sccc_decoder_combined_XX.cc.t	\
 	trellis_sccc_decoder_combined_XX.h.t		\
 	trellis_sccc_decoder_combined_XX.i.t		\
+	trellis_sccc_decoder_X.cc.t	\
+	trellis_sccc_decoder_X.h.t		\
+	trellis_sccc_decoder_X.i.t		\
 	trellis_viterbi_X.cc.t			\
 	trellis_viterbi_X.h.t			\
 	trellis_viterbi_X.i.t
diff --git a/gr-trellis/src/lib/core_algorithms.cc b/gr-trellis/src/lib/core_algorithms.cc
index c1bafa379..b7037926e 100644
--- a/gr-trellis/src/lib/core_algorithms.cc
+++ b/gr-trellis/src/lib/core_algorithms.cc
@@ -963,3 +963,137 @@ void sccc_decoder_combined<gr_complex,int>(
       const gr_complex *observations, int *data
 );
 
+
+
+//=========================================================
+
+template<class T>
+void sccc_decoder(
+      const fsm &FSMo, int STo0, int SToK,
+      const fsm &FSMi, int STi0, int STiK,
+      const interleaver &INTERLEAVER, int blocklength, int repetitions,
+      float (*p2mymin)(float,float),
+      const float *iprioro, T *data
+)
+{
+
+//allocate space for priori, and posti of inner FSM
+std::vector<float> ipriori(blocklength*FSMi.I(),0.0);
+std::vector<float> iposti(blocklength*FSMi.I());
+
+//allocate space for priori, prioro and posto of outer FSM
+std::vector<float> opriori(blocklength*FSMo.I(),0.0);
+std::vector<float> oprioro(blocklength*FSMo.O());
+std::vector<float> oposti(blocklength*FSMo.I());
+std::vector<float> oposto(blocklength*FSMo.O());
+
+for(int rep=0;rep<repetitions;rep++) {
+  // run inner SISO
+  siso_algorithm(FSMi.I(),FSMi.S(),FSMi.O(),
+             FSMi.NS(), FSMi.OS(), FSMi.PS(), FSMi.PI(),
+             blocklength,
+             STi0,STiK,
+             true, false,
+             p2mymin,
+             &(ipriori[0]),  &(iprioro[0]), &(iposti[0])
+  );
+
+  //interleave soft info inner -> outer
+  for(int k=0;k<blocklength;k++) {
+    int ki = INTERLEAVER.DEINTER()[k];
+    //for(int i=0;i<FSMi.I();i++) {
+      //oprioro[k*FSMi.I()+i]=iposti[ki*FSMi.I()+i];
+    //}
+    memcpy(&(oprioro[k*FSMi.I()]),&(iposti[ki*FSMi.I()]),FSMi.I()*sizeof(float));
+  } 
+
+  // run outer SISO
+
+  if(rep<repetitions-1) { // do not produce posti
+    siso_algorithm(FSMo.I(),FSMo.S(),FSMo.O(),
+             FSMo.NS(), FSMo.OS(), FSMo.PS(), FSMo.PI(),
+             blocklength,
+             STo0,SToK,
+             false, true,
+             p2mymin,
+             &(opriori[0]),  &(oprioro[0]), &(oposto[0])
+    );
+
+    //interleave soft info outer --> inner
+    for(int k=0;k<blocklength;k++) {
+      int ki = INTERLEAVER.DEINTER()[k];
+      //for(int i=0;i<FSMi.I();i++) {
+        //ipriori[ki*FSMi.I()+i]=oposto[k*FSMi.I()+i];
+      //}
+      memcpy(&(ipriori[ki*FSMi.I()]),&(oposto[k*FSMi.I()]),FSMi.I()*sizeof(float));
+    } 
+  }
+  else // produce posti but not posto
+    
+    siso_algorithm(FSMo.I(),FSMo.S(),FSMo.O(),
+             FSMo.NS(), FSMo.OS(), FSMo.PS(), FSMo.PI(),
+             blocklength,
+             STo0,SToK,
+             true, false,
+             p2mymin,
+             &(opriori[0]),  &(oprioro[0]), &(oposti[0])
+    );
+   
+    /*
+    viterbi_algorithm(FSMo.I(),FSMo.S(),FSMo.O(),
+             FSMo.NS(), FSMo.OS(), FSMo.PS(), FSMo.PI(),
+             blocklength,
+             STo0,SToK,
+             &(oprioro[0]), data
+    );
+    */
+
+}
+
+
+// generate hard decisions
+for(int k=0;k<blocklength;k++) {
+  float min=INF;
+  int mini=0;
+  for(int i=0;i<FSMo.I();i++) {
+    if(oposti[k*FSMo.I()+i]<min) {
+      min=oposti[k*FSMo.I()+i];
+      mini=i;
+    }
+  }
+  data[k]=(T)mini;
+}
+
+
+
+}
+
+//-------
+
+template
+void sccc_decoder<unsigned char>(
+      const fsm &FSMo, int STo0, int SToK,
+      const fsm &FSMi, int STi0, int STiK,
+      const interleaver &INTERLEAVER, int blocklength, int repetitions,
+      float (*p2mymin)(float,float),
+      const float *iprioro, unsigned char *data
+);
+
+template
+void sccc_decoder<short>(
+      const fsm &FSMo, int STo0, int SToK,
+      const fsm &FSMi, int STi0, int STiK,
+      const interleaver &INTERLEAVER, int blocklength, int repetitions,
+      float (*p2mymin)(float,float),
+      const float *iprioro, short *data
+);
+
+template
+void sccc_decoder<int>(
+      const fsm &FSMo, int STo0, int SToK,
+      const fsm &FSMi, int STi0, int STiK,
+      const interleaver &INTERLEAVER, int blocklength, int repetitions,
+      float (*p2mymin)(float,float),
+      const float *iprioro, int *data
+);
+
diff --git a/gr-trellis/src/lib/core_algorithms.h b/gr-trellis/src/lib/core_algorithms.h
index 8e4ffe522..e52a22b8e 100644
--- a/gr-trellis/src/lib/core_algorithms.h
+++ b/gr-trellis/src/lib/core_algorithms.h
@@ -104,6 +104,15 @@ void sccc_decoder_combined(
 );
 
 
+template<class T>
+void sccc_decoder(
+      const fsm &FSMo, int STo0, int SToK,
+      const fsm &FSMi, int STi0, int STiK,
+      const interleaver &INTERLEAVER, int blocklength, int repetitions,
+      float (*p2mymin)(float,float),
+      const float *iprioro, T *data
+);
+
 
 
 
diff --git a/gr-trellis/src/lib/generate_trellis.py b/gr-trellis/src/lib/generate_trellis.py
index 691276cc8..9d2c593b4 100644
--- a/gr-trellis/src/lib/generate_trellis.py
+++ b/gr-trellis/src/lib/generate_trellis.py
@@ -33,6 +33,7 @@ other_roots = [
     'trellis_viterbi_X',
     'trellis_viterbi_combined_XX',
     'trellis_sccc_decoder_combined_XX',
+    'trellis_sccc_decoder_X',
     ]
 
 other_signatures = (
@@ -42,6 +43,7 @@ other_signatures = (
     ['b','s','i'],
     ['sb','ss','si','ib','is','ii','fb','fs','fi','cb','cs','ci'],
     ['fb','fs','fi','cb','cs','ci'],
+    ['b','s','i'],
     )
 
 
diff --git a/gr-trellis/src/lib/trellis_sccc_decoder_X.cc.t b/gr-trellis/src/lib/trellis_sccc_decoder_X.cc.t
new file mode 100644
index 000000000..da853f2ea
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_sccc_decoder_X.cc.t
@@ -0,0 +1,123 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2010 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.
+ */
+
+// @WARNING@
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <@NAME@.h>
+#include <gr_io_signature.h>
+#include <assert.h>
+#include <iostream>
+#include "core_algorithms.h"
+
+  
+static const float INF = 1.0e9;
+
+@SPTR_NAME@ 
+trellis_make_@BASE_NAME@ (
+  const fsm &FSMo, int STo0, int SToK,
+  const fsm &FSMi, int STi0, int STiK,
+  const interleaver &INTERLEAVER,
+  int blocklength,
+  int repetitions,
+  trellis_siso_type_t SISO_TYPE
+)
+{
+  return gnuradio::get_initial_sptr (new @NAME@ (
+    FSMo, STo0, SToK,
+    FSMi, STi0, STiK,
+    INTERLEAVER,
+    blocklength,
+    repetitions,
+    SISO_TYPE
+    ));
+}
+
+@NAME@::@NAME@ (
+  const fsm &FSMo, int STo0, int SToK,
+  const fsm &FSMi, int STi0, int STiK,
+  const interleaver &INTERLEAVER,
+  int blocklength,
+  int repetitions,
+  trellis_siso_type_t SISO_TYPE
+)
+  : gr_block ("@BASE_NAME@",
+			  gr_make_io_signature (1, 1, sizeof (float)),
+			  gr_make_io_signature (1, 1, sizeof (@O_TYPE@))),  
+  d_FSMo (FSMo), d_STo0 (STo0), d_SToK (SToK),
+  d_FSMi (FSMi), d_STi0 (STi0), d_STiK (STiK),
+  d_INTERLEAVER (INTERLEAVER),
+  d_blocklength (blocklength),
+  d_repetitions (repetitions),
+  d_SISO_TYPE (SISO_TYPE)
+{
+    set_relative_rate (1.0 / ((double) d_FSMi.O()));
+    set_output_multiple (d_blocklength);
+}
+
+
+void
+@NAME@::forecast (int noutput_items, gr_vector_int &ninput_items_required)
+{
+  assert (noutput_items % d_blocklength == 0);
+  int input_required =  d_FSMi.O() * noutput_items ;
+  ninput_items_required[0] = input_required;
+}
+
+
+
+//===========================================================
+
+int
+@NAME@::general_work (int noutput_items,
+                        gr_vector_int &ninput_items,
+                        gr_vector_const_void_star &input_items,
+                        gr_vector_void_star &output_items)
+{
+  assert (noutput_items % d_blocklength == 0);
+  int nblocks = noutput_items / d_blocklength;
+
+  float (*p2min)(float, float) = NULL;
+  if(d_SISO_TYPE == TRELLIS_MIN_SUM)
+    p2min = &min;
+  else if(d_SISO_TYPE == TRELLIS_SUM_PRODUCT)
+    p2min = &min_star;
+
+
+  const float *in = (const float *) input_items[0];
+  @O_TYPE@ *out = (@O_TYPE@ *) output_items[0];
+  for (int n=0;n<nblocks;n++) {
+    sccc_decoder(
+      d_FSMo, d_STo0, d_SToK,
+      d_FSMi, d_STi0, d_STiK,
+      d_INTERLEAVER, d_blocklength, d_repetitions,
+      p2min, 
+      &(in[n*d_blocklength*d_FSMi.O()]),&(out[n*d_blocklength])
+    );
+  }
+
+  consume_each (d_FSMi.O() * noutput_items );
+  return noutput_items;
+}
diff --git a/gr-trellis/src/lib/trellis_sccc_decoder_X.h.t b/gr-trellis/src/lib/trellis_sccc_decoder_X.h.t
new file mode 100644
index 000000000..3adb8a5b7
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_sccc_decoder_X.h.t
@@ -0,0 +1,102 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 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.
+ */
+
+// @WARNING@
+
+#ifndef @GUARD_NAME@
+#define @GUARD_NAME@
+
+#include "fsm.h"
+#include "interleaver.h"
+#include <gr_block.h>
+#include <vector>
+#include "siso_type.h"
+
+class @NAME@;
+typedef boost::shared_ptr<@NAME@> @SPTR_NAME@;
+
+@SPTR_NAME@ trellis_make_@BASE_NAME@ (
+  const fsm &FSMo, int STo0, int SToK,
+  const fsm &FSMi, int STi0, int STiK,
+  const interleaver &INTERLEAVER,
+  int blocklength,
+  int repetitions,
+  trellis_siso_type_t SISO_TYPE // perform "min-sum" or "sum-product" combining 
+);
+
+
+/*!
+ *  \ingroup coding_blk
+ */
+class @NAME@ : public gr_block
+{
+  fsm d_FSMo;
+  fsm d_FSMi;
+  int d_STo0;
+  int d_SToK;
+  int d_STi0;
+  int d_STiK;
+  interleaver d_INTERLEAVER;
+  int d_blocklength;
+  int d_repetitions;
+  trellis_siso_type_t d_SISO_TYPE;
+  std::vector<float> d_buffer;
+
+  friend @SPTR_NAME@ trellis_make_@BASE_NAME@ (
+    const fsm &FSMo, int STo0, int SToK,
+    const fsm &FSMi, int STi0, int STiK,
+    const interleaver &INTERLEAVER,
+    int blocklength,
+    int repetitions,
+    trellis_siso_type_t SISO_TYPE
+  );
+
+  @NAME@ (
+    const fsm &FSMo, int STo0, int SToK,
+    const fsm &FSMi, int STi0, int STiK,
+    const interleaver &INTERLEAVER,
+    int blocklength,
+    int repetitions,
+    trellis_siso_type_t SISO_TYPE 
+  );
+
+public:
+  fsm FSMo () const { return d_FSMo; }
+  fsm FSMi () const { return d_FSMi; }
+  int STo0 () const { return d_STo0; }
+  int SToK () const { return d_SToK; }
+  int STi0 () const { return d_STi0; }
+  int STiK () const { return d_STiK; }
+  interleaver INTERLEAVER () const { return d_INTERLEAVER; }
+  int blocklength () const { return d_blocklength; }
+  int repetitions () const { return d_repetitions; }
+  trellis_siso_type_t SISO_TYPE () const { return d_SISO_TYPE; }
+
+  void forecast (int noutput_items,
+                 gr_vector_int &ninput_items_required);
+  int general_work (int noutput_items,
+                    gr_vector_int &ninput_items,
+                    gr_vector_const_void_star &input_items,
+                    gr_vector_void_star &output_items);
+};
+
+#endif
diff --git a/gr-trellis/src/lib/trellis_sccc_decoder_X.i.t b/gr-trellis/src/lib/trellis_sccc_decoder_X.i.t
new file mode 100644
index 000000000..a4392ee6f
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_sccc_decoder_X.i.t
@@ -0,0 +1,60 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 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.
+ */
+
+// @WARNING@
+
+GR_SWIG_BLOCK_MAGIC(trellis,@BASE_NAME@);
+
+@SPTR_NAME@ trellis_make_@BASE_NAME@ (
+  const fsm &FSMo, int STo0, int SToK,
+  const fsm &FSMi, int STi0, int STiK,
+  const interleaver &INTERLEAVER,
+  int blocklength,
+  int repetitions,
+  trellis_siso_type_t SISO_TYPE
+);
+
+
+class @NAME@ : public gr_block
+{
+private:
+  @NAME@ (
+    const fsm &FSMo, int STo0, int SToK,
+    const fsm &FSMi, int STi0, int STiK,
+    const interleaver &INTERLEAVER,
+    int blocklength,
+    int repetitions,
+    trellis_siso_type_t SISO_TYPE
+  );
+
+public:
+  fsm FSMo () const { return d_FSMo; }
+  fsm FSMi () const { return d_FSMi; }
+  int STo0 () const { return d_STo0; }
+  int SToK () const { return d_SToK; }
+  int STi0 () const { return d_STi0; }
+  int STiK () const { return d_STiK; }
+  interleaver INTERLEAVER () const { return d_INTERLEAVER; }
+  int blocklength () const { return d_blocklength; }
+  int repetitions () const { return d_repetitions; }
+  trellis_siso_type_t SISO_TYPE () const { return d_SISO_TYPE; }
+};
-- 
cgit