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Diffstat (limited to 'gr-atsc/lib/atsci_equalizer_nop.cc')
| -rw-r--r-- | gr-atsc/lib/atsci_equalizer_nop.cc | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/gr-atsc/lib/atsci_equalizer_nop.cc b/gr-atsc/lib/atsci_equalizer_nop.cc deleted file mode 100644 index 39cf2ea1f6..0000000000 --- a/gr-atsc/lib/atsci_equalizer_nop.cc +++ /dev/null @@ -1,133 +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/equalizer_nop_impl.h> -#include <gnuradio/atsc/sync_tag_impl.h> -#include <assert.h> - -atsci_equalizer_nop::atsci_equalizer_nop () -{ -} - -atsci_equalizer_nop::~atsci_equalizer_nop () -{ -} - -void -atsci_equalizer_nop::reset () -{ - atsci_equalizer::reset (); // invoke superclass -} - -int -atsci_equalizer_nop::ntaps () const -{ - return 1; -} - -int -atsci_equalizer_nop::npretaps () const -{ - return 0; -} - -/*! - * Input range is known NOT TO CONTAIN data segment syncs - * or field syncs. This should be the fast path. In the - * non decicion directed case, this just runs the input - * through the filter without adapting it. - * - * \p input_samples has (nsamples + ntaps() - 1) valid entries. - * input_samples[0] .. input_samples[nsamples - 1 + ntaps() - 1] may be - * referenced to compute the output values. - */ -void -atsci_equalizer_nop::filter_normal (const float *input_samples, - float *output_samples, - int nsamples) -{ - for (int i = 0; i < nsamples; i++){ - output_samples[i] = scale (input_samples[i]); - } -} - - -/*! - * Input range is known to consist of only a data segment sync or a - * portion of a data segment sync. \p nsamples will be in [1,4]. - * \p offset will be in [0,3]. \p offset is the offset of the input - * from the beginning of the data segment sync pattern. - * - * \p input_samples has (nsamples + ntaps() - 1) valid entries. - * input_samples[0] .. input_samples[nsamples - 1 + ntaps() - 1] may be - * referenced to compute the output values. - */ -void -atsci_equalizer_nop::filter_data_seg_sync (const float *input_samples, - float *output_samples, - int nsamples, - int offset) -{ - for (int i = 0; i < nsamples; i++){ - output_samples[i] = scale_and_train (input_samples[i]); - } -} - - -/*! - * Input range is known to consist of only a field sync segment or a - * portion of a field sync segment. \p nsamples will be in [1,832]. - * \p offset will be in [0,831]. \p offset is the offset of the input - * from the beginning of the data segment sync pattern. We consider the - * 4 symbols of the immediately preceding data segment sync to be the - * first symbols of the field sync segment. \p which_field is in [0,1] - * and specifies which field (duh). - * - * \p input_samples has (nsamples + ntaps() - 1) valid entries. - * input_samples[0] .. input_samples[nsamples - 1 + ntaps() - 1] may be - * referenced to compute the output values. - */ -void -atsci_equalizer_nop::filter_field_sync (const float *input_samples, - float *output_samples, - int nsamples, - int offset, - int which_field) -{ - int i = 0; - - if (offset == 0 && nsamples > 0){ - output_samples[0] = scale_and_train (input_samples[0]); - i++; - } - - for (; i < nsamples; i++){ - output_samples[i] = scale_and_train (input_samples[i]); - } -} - - -float -atsci_equalizer_nop::scale_and_train (float input) -{ - return input; -} |