diff options
Diffstat (limited to 'gr-atsc/lib/qa_atsci_trellis_encoder.cc')
-rw-r--r-- | gr-atsc/lib/qa_atsci_trellis_encoder.cc | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/gr-atsc/lib/qa_atsci_trellis_encoder.cc b/gr-atsc/lib/qa_atsci_trellis_encoder.cc new file mode 100644 index 0000000000..902dcebf82 --- /dev/null +++ b/gr-atsc/lib/qa_atsci_trellis_encoder.cc @@ -0,0 +1,116 @@ +/* -*- 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_trellis_encoder.h" +#include <cstdio> +#include <string.h> +#include <stdlib.h> +#include <time.h> +#include <string.h> + +#define NELEM(x) (sizeof (x) / sizeof (x[0])) + + +static const int NCODERS = atsci_trellis_encoder::NCODERS; + +void +qa_atsci_trellis_encoder::t0 () +{ +#if 0 // generate i/o test data for t1 + + atsc_mpeg_packet_rs_encoded in[NCODERS]; + atsc_data_segment out[NCODERS]; + + + memset (in, 0, sizeof (in)); + memset (out, 0, sizeof (out)); + + srandom (1); + + printf ("@@@ INPUT @@@\n"); + for (int i = 0; i < NCODERS; i++){ + for (unsigned int j = 0; j < NELEM (in[i].data); j++){ + int t = (random () >> 8) & 0xff; // 8 random bits + in[i].data[j] = t; + printf ("%d\n", t); + } + } + + enc.reset (); + enc.encode (out, in); + + printf ("@@@ OUTPUT @@@\n"); + for (int i = 0; i < NCODERS; i++){ + for (unsigned int j = 0; j < NELEM (out[i].data); j++){ + printf ("%d\n", out[i].data[j]); + } + } +#endif +} + +void +qa_atsci_trellis_encoder::t1 () +{ + atsc_mpeg_packet_rs_encoded in[NCODERS]; + atsc_data_segment expected_out[NCODERS]; + atsc_data_segment actual_out[NCODERS]; + static const unsigned char raw_input[NCODERS * NELEM (in[0].data)] = { +#include "qa_atsci_trellis_encoder_t1_input.dat" + }; + static const unsigned char raw_output[NCODERS * NELEM (expected_out[0].data)] = { +#include "qa_atsci_trellis_encoder_t1_output.dat" + }; + + + // load up input + const unsigned char *r = &raw_input[0]; + for (int i = 0; i < NCODERS; i++){ + in[i].pli.set_regular_seg (false, i); + for (unsigned int j = 0; j < NELEM (in[i].data); j++){ + in[i].data[j] = *r++; + } + } + + // load up expected output + r = &raw_output[0]; + for (int i = 0; i < NCODERS; i++){ + expected_out[i].pli.set_regular_seg (false, i); + for (unsigned int j = 0; j < NELEM (expected_out[i].data); j++){ + expected_out[i].data[j] = *r++; + } + } + + memset (&actual_out, 0, sizeof (actual_out)); // ensure zero + + enc.reset (); + enc.encode (actual_out, in); // trellis code test data + + for (int i = 0; i < NCODERS; i++){ // check the result + CPPUNIT_ASSERT (expected_out[i] == actual_out[i]); + CPPUNIT_ASSERT (expected_out[i].pli == actual_out[i].pli); + } +} |