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/*
* rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
* Copyright (C) 2016, 2017 Konsulko Group
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef RTL_FM_H
#define RTL_FM_H
#include <stdint.h>
#define RTL_FM_DEFAULT_BUF_LENGTH (1 * 16384)
#define RTL_FM_MAXIMUM_OVERSAMPLE 16
#define RTL_FM_MAXIMUM_BUF_LENGTH (RTL_FM_MAXIMUM_OVERSAMPLE * RTL_FM_DEFAULT_BUF_LENGTH)
#ifdef __cplusplus
extern "C" {
#endif
typedef void (*rtl_fm_output_fn_t)(int16_t *result, int result_len, void *data);
int rtl_fm_init(uint32_t freq,
uint32_t sample_rate,
uint32_t resample_rate,
rtl_fm_output_fn_t output_fn,
void *output_fn_data);
void rtl_fm_start(void);
void rtl_fm_set_freq(uint32_t freq);
void rtl_fm_set_freq_callback(void (*callback)(uint32_t, void *),
void *data);
uint32_t rtl_fm_get_freq(void);
void rtl_fm_stop(void);
void rtl_fm_scan_start(int direction,
void (*callback)(uint32_t, void *),
void *data,
uint32_t step,
uint32_t min,
uint32_t max);
void rtl_fm_scan_stop(void);
void rtl_fm_scan_set_squelch_level(int level);
void rtl_fm_scan_set_squelch_limit(int count);
void rtl_fm_cleanup(void);
#ifdef __cplusplus
}
#endif
#endif /* RTL_FM_H */
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