55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The libLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the libLTE library.
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*
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* libLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef CONVOLUTION_H_
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#define CONVOLUTION_H_
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#include "lte/config.h"
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#include "lte/utils/dft.h"
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typedef struct LIBLTE_API {
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_Complex float *input_fft;
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_Complex float *filter_fft;
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_Complex float *output_fft;
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_Complex float *output_fft2;
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int input_len;
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int filter_len;
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int output_len;
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dft_plan_t input_plan;
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dft_plan_t filter_plan;
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dft_plan_t output_plan;
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}conv_fft_cc_t;
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LIBLTE_API int conv_fft_cc_init(conv_fft_cc_t *state, int input_len, int filter_len);
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LIBLTE_API void conv_fft_cc_free(conv_fft_cc_t *state);
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LIBLTE_API int conv_fft_cc_run(conv_fft_cc_t *state, _Complex float *input, _Complex float *filter, _Complex float *output);
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LIBLTE_API int conv_cc(_Complex float *input, _Complex float *filter, _Complex float *output, int input_len, int filter_len);
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#endif // CONVOLUTION_H_
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