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/*
* Copyright (C) 2015 "IoT.bzh"
*
* 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 3 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 RADIO_RTLSDR_H
#define RADIO_RTLSDR_H
/* -------------- RADIO RTLSDR DEFINITIONS ------------------ */
#include <math.h>
#include <pthread.h>
#include <rtl-sdr.h>
#include "local-def.h"
#define pthread_signal(n, m) pthread_mutex_lock(m); pthread_cond_signal(n); pthread_mutex_unlock(m)
#define pthread_wait(n, m) pthread_mutex_lock(m); pthread_cond_wait(n, m); pthread_mutex_unlock(m)
#define BUF_LEN 16*16384
typedef enum { FM, AM } Mode;
typedef struct dongle_ctx dongle_ctx;
typedef struct demod_ctx demod_ctx;
typedef struct output_ctx output_ctx;
typedef struct dev_ctx dev_ctx_T;
struct dongle_ctx {
pthread_t thr;
unsigned char thr_finished;
uint16_t buf[BUF_LEN];
uint32_t buf_len;
};
struct demod_ctx {
pthread_t thr;
unsigned char thr_finished;
pthread_rwlock_t lck;
pthread_cond_t ok;
pthread_mutex_t ok_m;
int pre_r, pre_j, now_r, now_j, index;
int pre_index, now_index;
int16_t buf[BUF_LEN];
int buf_len;
int16_t res[BUF_LEN];
int res_len;
};
struct output_ctx {
pthread_t thr;
unsigned char thr_finished;
pthread_rwlock_t lck;
pthread_cond_t ok;
pthread_mutex_t ok_m;
int16_t buf[BUF_LEN];
int buf_len;
};
struct dev_ctx {
int used; // radio is free ???
rtlsdr_dev_t* dev;
Mode mode;
float freq;
unsigned char mute;
unsigned char should_run;
/* thread contexts */
dongle_ctx *dongle;
demod_ctx *demod;
output_ctx *output;
};
PUBLIC unsigned int _radio_dev_count (void);
PUBLIC const char* _radio_dev_name (unsigned int);
STATIC void* _dongle_thread_fn (void *);
STATIC void* _demod_thread_fn (void *);
STATIC void* _output_thread_fn (void *);
STATIC unsigned char _radio_dev_init (struct dev_ctx *, unsigned int);
STATIC unsigned char _radio_dev_free (struct dev_ctx *);
STATIC void _radio_apply_params (struct dev_ctx *);
STATIC void _radio_start_threads (struct dev_ctx *);
STATIC void _radio_stop_threads (struct dev_ctx *);
static unsigned int init_dev_count = 0;
static struct dev_ctx **dev_ctx = NULL;
#endif /* RADIO_RTLSDR_H */
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