X-Git-Url: https://git.gag.com/?p=debian%2Fgnuradio;a=blobdiff_plain;f=gr-atsc%2Fsrc%2Flib%2Fqa_atsci_equalizer_nop.cc;fp=gr-atsc%2Fsrc%2Flib%2Fqa_atsci_equalizer_nop.cc;h=85584f55f0e72d37d0b30306e27dd26712f955fb;hp=0000000000000000000000000000000000000000;hb=35e43e8d8c271e6842191cac3fc3f2f88a861183;hpb=ea29b08aeb54227e6628f655ccfdb96fe4d8c378 diff --git a/gr-atsc/src/lib/qa_atsci_equalizer_nop.cc b/gr-atsc/src/lib/qa_atsci_equalizer_nop.cc new file mode 100644 index 00000000..85584f55 --- /dev/null +++ b/gr-atsc/src/lib/qa_atsci_equalizer_nop.cc @@ -0,0 +1,247 @@ +/* -*- 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 +#include +#include +#include +#include +#include +#include +#include +#include + +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... +}