Added pccc combined turbo decoder and corresponding GRC block

1 files changed, 147 insertions, 0 deletions

diff --git a/gr-trellis/src/lib/trellis_pccc_decoder_combined_fs.cc b/gr-trellis/src/lib/trellis_pccc_decoder_combined_fs.cc
new file mode 100644
index 000000000..bb822c699
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_pccc_decoder_combined_fs.cc
@@ -0,0 +1,147 @@
+/* -*- 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: this file is machine generated.  Edits will be over written
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <trellis_pccc_decoder_combined_fs.h>
+#include <gr_io_signature.h>
+#include <assert.h>
+#include <iostream>
+#include "core_algorithms.h"
+
+  
+static const float INF = 1.0e9;
+
+trellis_pccc_decoder_combined_fs_sptr 
+trellis_make_pccc_decoder_combined_fs (
+  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,
+  int D,
+  const std::vector<float> &TABLE,
+  trellis_metric_type_t METRIC_TYPE,
+  float scaling
+)
+{
+  return gnuradio::get_initial_sptr (new trellis_pccc_decoder_combined_fs (
+    FSMo, STo0, SToK,
+    FSMi, STi0, STiK,
+    INTERLEAVER,
+    blocklength,
+    repetitions,
+    SISO_TYPE,
+    D,
+    TABLE,METRIC_TYPE,
+    scaling
+    ));
+}
+
+trellis_pccc_decoder_combined_fs::trellis_pccc_decoder_combined_fs (
+  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,
+  int D,
+  const std::vector<float> &TABLE,
+  trellis_metric_type_t METRIC_TYPE,
+  float scaling
+)
+  : gr_block ("pccc_decoder_combined_fs",
+			  gr_make_io_signature (1, 1, sizeof (float)),
+			  gr_make_io_signature (1, 1, sizeof (short))),  
+  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),
+  d_D (D),
+  d_TABLE (TABLE),
+  d_METRIC_TYPE (METRIC_TYPE),
+  d_scaling (scaling)
+{
+    assert(d_FSMo.I() == d_FSMi.I());
+    set_relative_rate (1.0 / ((double) d_D));
+    set_output_multiple (d_blocklength);
+}
+
+void trellis_pccc_decoder_combined_fs::set_scaling(float scaling)
+{
+  d_scaling = scaling;
+}
+
+
+void
+trellis_pccc_decoder_combined_fs::forecast (int noutput_items, gr_vector_int &ninput_items_required)
+{
+  assert (noutput_items % d_blocklength == 0);
+  int input_required =  d_D * noutput_items ;
+  ninput_items_required[0] = input_required;
+}
+
+
+
+//===========================================================
+
+int
+trellis_pccc_decoder_combined_fs::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];
+  short *out = (short *) output_items[0];
+  for (int n=0;n<nblocks;n++) {
+    pccc_decoder_combined(
+      d_FSMo, d_STo0, d_SToK,
+      d_FSMi, d_STi0, d_STiK,
+      d_INTERLEAVER, d_blocklength, d_repetitions,
+      p2min, 
+      d_D,d_TABLE, 
+      d_METRIC_TYPE, 
+      d_scaling,
+      &(in[n*d_blocklength*d_D]),&(out[n*d_blocklength])
+    );
+  }
+
+  consume_each (d_D * noutput_items );
+  return noutput_items;
+}