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47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
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Copyright (C) 2014, Youssef Touil <youssef@airspy.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef IQCONVERTER_FLOAT_H
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#define IQCONVERTER_FLOAT_H
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#include <stdint.h>
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#define IQCONVERTER_NZEROS 2
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#define IQCONVERTER_NPOLES 2
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typedef struct {
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float avg;
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float hbc;
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int len;
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int fir_index;
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int delay_index;
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float *fir_kernel;
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float *fir_queue;
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float *delay_line;
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} iqconverter_float_t;
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iqconverter_float_t *iqconverter_float_create(const float *hb_kernel, int len);
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void iqconverter_float_free(iqconverter_float_t *cnv);
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void iqconverter_float_reset(iqconverter_float_t *cnv);
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void iqconverter_float_process(iqconverter_float_t *cnv, float *samples, int len);
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#endif // IQCONVERTER_FLOAT_H
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