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