--- /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.
+ */
+
+#include <qa_atsci_equalizer_nop.h>
+#include <atsci_equalizer.h>
+#include <atsci_equalizer_nop.h>
+#include <atsci_pnXXX.h>
+#include <atsc_types.h>
+#include <cppunit/TestAssert.h>
+#include <assert.h>
+#include <iostream>
+#include <string.h>
+
+using std::cerr;
+using std::endl;
+
+
+static const int SYMBOLS_PER_FIELD = (ATSC_DSEGS_PER_FIELD + 1) * ATSC_DATA_SEGMENT_LENGTH;
+static const int PAD = 500;
+static const int NFIELDS = 2;
+
+static const int INPUT_SIZE = PAD + (NFIELDS * SYMBOLS_PER_FIELD);
+
+static float
+bin_map (int bit)
+{
+ return bit ? +5 : -5;
+}
+
+static void
+init_tags (atsc::syminfo *tags, int segnum, int fieldnum)
+{
+ int i;
+
+ for (i = 0; i < ATSC_DATA_SEGMENT_LENGTH; i++){
+ tags[i].symbol_num = i;
+ tags[i].segment_num = segnum;
+ tags[i].field_num = fieldnum;
+ tags[i].valid = 1;
+ }
+}
+
+static void
+init_data_seg (float *p, atsc::syminfo *tags, int v, int segnum, int fieldnum)
+{
+ init_tags (tags, segnum, fieldnum);
+
+ int i = 0;
+
+ p[i++] = bin_map (1); // data segment sync pulse
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+
+ for (; i < ATSC_DATA_SEGMENT_LENGTH; i++)
+ p[i] = (float) (i + v);
+}
+
+static void
+init_field_sync_tags (atsc::syminfo *tags, int fieldnum)
+{
+ init_tags (tags, atsc::SI_FIELD_SYNC_SEGMENT_NUM, fieldnum);
+}
+
+static void
+init_field_sync_common (float *p, int mask)
+
+{
+ int i = 0;
+
+ p[i++] = bin_map (1); // data segment sync pulse
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+
+ for (int j = 0; j < 511; j++) // PN511
+ p[i++] = bin_map (atsc_pn511[j]);
+
+ for (int j = 0; j < 63; j++) // PN63
+ p[i++] = bin_map (atsc_pn63[j]);
+
+ for (int j = 0; j < 63; j++) // PN63, toggled on field 2
+ p[i++] = bin_map (atsc_pn63[j] ^ mask);
+
+ for (int j = 0; j < 63; j++) // PN63
+ p[i++] = bin_map (atsc_pn63[j]);
+
+ p[i++] = bin_map (0); // 24 bits of VSB8 mode identifiera
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (0);
+
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (1);
+
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+ p[i++] = bin_map (1);
+ p[i++] = bin_map (0);
+
+
+ for (int j = 0; j < 92; j++) // 92 more bits
+ p[i++] = bin_map (atsc_pn63[j % 63]);
+
+ // now copy the last 12 symbols of the previous segment
+ // bogus fill
+
+ for (int j = 0; j < 12; j++)
+ p[i++] = bin_map (j & 1);
+
+ assert (i == ATSC_DATA_SEGMENT_LENGTH);
+}
+
+void
+qa_atsci_equalizer_nop::setUp ()
+{
+ eq = new atsci_equalizer_nop ();
+}
+
+void
+qa_atsci_equalizer_nop::tearDown ()
+{
+ delete eq;
+ eq = 0;
+}
+
+static void
+setup_test_data (float *data, atsc::syminfo *tags)
+{
+ int mask = 0;
+ int i = 0;
+
+ for (i = 0; i < PAD; i++){
+ data[i] = (float) i;
+ tags[i].symbol_num = 13 + i;
+ tags[i].segment_num = 17;
+ tags[i].field_num = 0;
+ tags[i].valid = 1;
+ }
+
+ for (int nfields = 0; nfields < NFIELDS; nfields++){
+ init_field_sync_common (&data[i], mask);
+ init_field_sync_tags (&tags[i], mask);
+ i += ATSC_DATA_SEGMENT_LENGTH;
+
+ for (int segnum = 0; segnum < 312; segnum++){
+ init_data_seg (&data[i], &tags[i], i, segnum, mask);
+ i += ATSC_DATA_SEGMENT_LENGTH;
+ }
+ mask ^= 1;
+ }
+ assert (i == INPUT_SIZE);
+}
+
+void
+qa_atsci_equalizer_nop::t0 ()
+{
+ // these are dynamically allocated because they are bigger
+ // than the default stack limit.
+
+ float *input_data = new float[INPUT_SIZE];
+ atsc::syminfo *input_tags = new atsc::syminfo[INPUT_SIZE];
+ float *output_data = new float[INPUT_SIZE];
+
+ try {
+
+ memset (input_data, 0, sizeof (input_data));
+ memset (input_tags, 0, sizeof (input_tags));
+ memset (output_data, 0, sizeof (output_data));
+
+ setup_test_data (input_data, input_tags);
+
+ eq->filter (input_data, input_tags,
+ output_data, INPUT_SIZE);
+
+
+ // now check that data values got copied correctly
+
+ for (int i = 0; i < INPUT_SIZE; i++){
+
+ if (input_tags[i].segment_num == atsc::SI_FIELD_SYNC_SEGMENT_NUM){
+ // ignore entire field sync data segment
+ }
+ else if (input_tags[i].symbol_num <= 3){
+ // ignore 4 symbols of data segment sync (+5, -5, -5, +5)
+ }
+ else {
+ if (output_data[i] != (float) i){
+ cerr << "output_data[" << i << "] == " << output_data[i] << endl;
+ CPPUNIT_ASSERT_DOUBLES_EQUAL ((float) i, output_data[i], 1e-6);
+ }
+ }
+ }
+
+ delete [] input_data;
+ delete [] input_tags;
+ delete [] output_data;
+ }
+
+ catch ( ... ){
+ delete [] input_data;
+ delete [] input_tags;
+ delete [] output_data;
+ }
+}
+
+void
+qa_atsci_equalizer_nop::t1 ()
+{
+ // think of another test...
+}
projects / debian / gnuradio / blobdiff