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/*
* Copyright (C) 2015 "IoT.bzh"
* Author "Manuel Bachmann"
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RADIO_RTLSDR_H
#define RADIO_RTLSDR_H
/* -------------- RADIO RTLSDR DEFINITIONS ------------------ */
#include <math.h>
#include <pthread.h>
#include <rtl-sdr.h>
#include "radio-api.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
#define AUDIO_BUFFER "/tmp/audio_buf"
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; /* TODO: 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;
};
unsigned int _radio_dev_count (void);
const char* _radio_dev_name (unsigned int);
unsigned char _radio_on (unsigned int, radioCtxHandleT *);
void _radio_off (unsigned int);
void _radio_stop (unsigned int);
void _radio_play (unsigned int);
void _radio_set_mode (unsigned int, Mode);
void _radio_set_freq (unsigned int, double);
void _radio_set_mute (unsigned int, unsigned char);
unsigned char _radio_dev_init (struct dev_ctx *, unsigned int);
unsigned char _radio_dev_free (struct dev_ctx *);
void _radio_apply_params (struct dev_ctx *);
void _radio_start_threads (struct dev_ctx *);
void _radio_stop_threads (struct dev_ctx *);
static void* _dongle_thread_fn (void *);
static void* _demod_thread_fn (void *);
static void* _output_thread_fn (void *);
#endif /* RADIO_RTLSDR_H */
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