Software to turn the RTL2832U into a SDR receiver
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* rtl-sdr, a poor man's SDR using a Realtek RTL2832 based DVB-stick
* Copyright (C) 2012 by Steve Markgraf <>
* 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
* 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 <>.
#ifndef __RTL_SDR_H
#define __RTL_SDR_H
#ifdef __cplusplus
extern "C" {
#include <stdint.h>
typedef int rtlsdr_dev_t;
/* must be called once before using any other library functions */
int rtlsdr_init(void);
/* must be called once at application shutdown */
void rtlsdr_exit(void);
uint32_t rtlsdr_get_device_count(void);
const char *rtlsdr_get_device_name(uint32_t index);
rtlsdr_dev_t *rtlsdr_open(uint32_t index);
int rtlsdr_close(rtlsdr_dev_t *dev);
/* configuration functions */
int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq);
int rtlsdr_get_center_freq(rtlsdr_dev_t *dev);
int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm);
int32_t rtlsdr_get_freq_correction(rtlsdr_dev_t *dev);
/* this will select the baseband filters according to the requested sample rate */
int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t rate);
int rtlsdr_get_sample_rate(rtlsdr_dev_t *dev);
/* streaming functions */
int rtlsdr_reset_buffer(rtlsdr_dev_t *dev);
int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, uint32_t len, uint32_t *n_read);
typedef void(*rtlsdr_async_read_cb_t)(const char *buf, uint32_t len, void *ctx);
int rtlsdr_async_loop(rtlsdr_dev_t *dev, rtlsdr_async_read_cb_t cb, void *ctx);
#ifdef __cplusplus
#endif /* __RTL_SDR_H */