diff options
Diffstat (limited to 'gr-atsc/lib/atsci_vsbtx_lp.cc')
-rw-r--r-- | gr-atsc/lib/atsci_vsbtx_lp.cc | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/gr-atsc/lib/atsci_vsbtx_lp.cc b/gr-atsc/lib/atsci_vsbtx_lp.cc deleted file mode 100644 index 2de5cd7497..0000000000 --- a/gr-atsc/lib/atsci_vsbtx_lp.cc +++ /dev/null @@ -1,59 +0,0 @@ -/* -*- 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 <gnuradio/atsc/consts.h> -#include <gnuradio/atsc/vsbtx_lp_impl.h> -#include <stdexcept> -#include <cmath> -#include <iostream> - -using std::vector; -using std::cerr; -using std::endl; - -// atsc root raised cosine filter, sampling rate = 21.52 MHz -static const float atsc_vsbtx_lp2x[] = { -#include "atsc_vsbtx_lp.dat" -}; - -#define NELEM(x) (sizeof (x) / sizeof ((x)[0])) - -// is a within 5% of target? - -static bool -close_enough_p (double a, double target) -{ - double delta = fabs (target * 0.05); // 5 percent - - return fabs (target - a) <= delta; -} - -vector<float> -atsc_vsbtx_lp::taps (double sampling_freq) -{ - if (close_enough_p (sampling_freq, 2 * ATSC_SYMBOL_RATE)){ - return vector<float>(&atsc_vsbtx_lp2x[0], &atsc_vsbtx_lp2x[NELEM(atsc_vsbtx_lp2x)]); - } - else - throw std::out_of_range ( - "atsc_vsbtx_lp: no pre-designed filter close enough"); -} |