49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/*
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This file is part of libcsdr.
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Copyright (c) Andras Retzler, HA7ILM <randras@sdr.hu>
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Copyright (c) Warren Pratt, NR0V <warren@wpratt.com>
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Copyright 2006,2010,2012 Free Software Foundation, Inc.
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libcsdr is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcsdr 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with libcsdr. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifdef LIBCSDR_GPL
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typedef struct shift_addition_data_s
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{
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float sindelta;
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float cosdelta;
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float rate;
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} shift_addition_data_t;
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shift_addition_data_t shift_addition_init(float rate);
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float shift_addition_cc(complexf *input, complexf* output, int input_size, shift_addition_data_t d, float starting_phase);
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float shift_addition_fc(float *input, complexf* output, int input_size, shift_addition_data_t d, float starting_phase);
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void shift_addition_cc_test(shift_addition_data_t d);
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float agc_ff(float* input, float* output, int input_size, float reference, float attack_rate, float decay_rate, float max_gain, short hang_time, short attack_wait_time, float gain_filter_alpha, float last_gain);
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typedef struct decimating_shift_addition_status_s
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{
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int decimation_remain;
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float starting_phase;
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int output_size;
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} decimating_shift_addition_status_t;
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decimating_shift_addition_status_t decimating_shift_addition_cc(complexf *input, complexf* output, int input_size, shift_addition_data_t d, int decimation, decimating_shift_addition_status_t s);
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shift_addition_data_t decimating_shift_addition_init(float rate, int decimation);
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#endif
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