--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 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 <cppunit/TestAssert.h>
+#include <qa_atsci_viterbi_decoder.h>
+#include <qa_atsci_trellis_encoder.h>
+#include <cstdio>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+#define NELEM(x) (sizeof (x) / sizeof (x[0]))
+
+
+static const int NCODERS = atsci_viterbi_decoder::NCODERS;
+
+#if 0
+static void
+map_to_soft_symbols (atsc_soft_data_segment &out,
+ const atsc_data_segment &in)
+{
+ for (unsigned int i = 0; i < NELEM (in.data); i++){
+ out.data[i] = in.data[i] * 2 - 7;
+ }
+}
+#endif
+
+static void
+pad_decoder_input (atsc_soft_data_segment out[NCODERS])
+{
+ memset (out, 0, sizeof (out));
+
+ // add data segment sync
+ for (int i = 0; i < NCODERS; i++){
+ out[i].data[0] = 5;
+ out[i].data[1] = -5;
+ out[i].data[2] = -5;
+ out[i].data[3] = 5;
+ out[i].pli.set_regular_seg (false, i);
+ }
+}
+
+void
+qa_atsci_viterbi_decoder::t0 ()
+{
+#if 0
+ atsci_trellis_encoder enc;
+ atsc_mpeg_packet_rs_encoded encoder_in[NCODERS];
+ atsc_data_segment encoder_out[NCODERS];
+ atsc_soft_data_segment decoder_in[NCODERS];
+ atsc_soft_data_segment decoder_in_pad[NCODERS];
+ atsc_mpeg_packet_rs_encoded decoder_out[NCODERS];
+ atsc_mpeg_packet_rs_encoded decoder_out_pad[NCODERS];
+
+
+ memset (encoder_in, 0, sizeof (encoder_in));
+ memset (encoder_out, 0, sizeof (encoder_out));
+ memset (decoder_out_pad, 0, sizeof (decoder_out_pad));
+
+ srandom (1);
+
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (encoder_in[i].data); j++){
+ int t = (random () >> 8) & 0xff; // 8 random bits
+ encoder_in[i].data[j] = t;
+ }
+ }
+
+ fflush (stdout);
+ printf ("@@@ ENCODER INPUT @@@\n");
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (encoder_in[i].data); j++){
+ printf ("%d\n", encoder_in[i].data[j]);
+ }
+ }
+
+ enc.reset ();
+ enc.encode (encoder_out, encoder_in);
+
+ printf ("@@@ ENCODER OUTPUT @@@\n");
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (encoder_out[i].data); j++){
+ printf ("%d\n", encoder_out[i].data[j]);
+ }
+ }
+
+ for (int i = 0; i < NCODERS; i++)
+ map_to_soft_symbols (decoder_in[i], encoder_out[i]);
+
+ viterbi.reset ();
+
+ // this has only the previous (non-existant) output
+ viterbi.decode (decoder_out_pad, decoder_in);
+
+ // now we'll see the real output
+ pad_decoder_input (decoder_in_pad);
+ viterbi.decode (decoder_out, decoder_in_pad);
+
+ printf ("@@@ DECODER OUTPUT @@@\n");
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (decoder_out[i].data); j++){
+ printf ("%d\n", decoder_out[i].data[j]);
+ }
+ }
+ fflush (stdout);
+#endif
+}
+
+void
+qa_atsci_viterbi_decoder::t1 ()
+{
+ atsc_soft_data_segment decoder_in[NCODERS];
+ atsc_soft_data_segment decoder_in_pad[NCODERS];
+ atsc_mpeg_packet_rs_encoded decoder_out[NCODERS];
+ atsc_mpeg_packet_rs_encoded decoder_out_pad[NCODERS];
+ atsc_mpeg_packet_rs_encoded expected_out[NCODERS];
+ static const float raw_input[NCODERS * NELEM (decoder_in[0].data)] = {
+#include "qa_atsci_viterbi_decoder_t1_input.dat"
+ };
+ static const unsigned char raw_output[NCODERS * NELEM (expected_out[0].data)] = {
+#include "qa_atsci_viterbi_decoder_t1_output.dat"
+ };
+
+
+ // load up input
+ const float *ri = &raw_input[0];
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (decoder_in[i].data); j++){
+ decoder_in[i].data[j] = *ri++;
+ }
+ decoder_in[i].pli.set_regular_seg (false, i);
+ }
+
+ // load up expected output
+ const unsigned char *ro = &raw_output[0];
+ for (int i = 0; i < NCODERS; i++){
+ for (unsigned int j = 0; j < NELEM (expected_out[i].data); j++){
+ expected_out[i].data[j] = *ro++;
+ }
+ expected_out[i].pli.set_regular_seg (false, i);
+ }
+
+ viterbi.reset ();
+
+ // this has only the previous (non-existant) output
+ viterbi.decode (decoder_out_pad, decoder_in);
+
+ // now we'll see the real output
+ pad_decoder_input (decoder_in_pad);
+ viterbi.decode (decoder_out, decoder_in_pad);
+
+ for (int i = 0; i < NCODERS; i++){ // check the result
+ CPPUNIT_ASSERT (expected_out[i] == decoder_out[i]);
+ }
+}
projects / debian / gnuradio / blobdiff