diff options
Diffstat (limited to 'binding/rtl_fm_helper.c')
| -rw-r--r-- | binding/rtl_fm_helper.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/binding/rtl_fm_helper.c b/binding/rtl_fm_helper.c deleted file mode 100644 index c7df4b9..0000000 --- a/binding/rtl_fm_helper.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright (C) 2018 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdint.h> -#include <stdbool.h> -#include <string.h> -#include <glib.h> - -#include "rtl_fm.h" -#include "radio_output.h" - -#ifdef DEBUG -#define LOG_FILE "/tmp/helper.log" -FILE *_log; -#define LOG(...) \ - do { \ - if(!_log) _log = fopen(LOG_FILE, "w"); \ - fprintf(_log, __VA_ARGS__); \ - fflush(_log); \ - } while(0) -#else -#define LOG(...) do { } while(0) -#endif - -// Structure to describe FM band plans, all values in Hz. -typedef struct { - const char *name; - uint32_t min; - uint32_t max; - uint32_t step; -} fm_band_plan_t; - -static fm_band_plan_t known_fm_band_plans[5] = { - { .name = "US", .min = 87900000, .max = 107900000, .step = 200000 }, - { .name = "JP", .min = 76000000, .max = 95000000, .step = 100000 }, - { .name = "EU", .min = 87500000, .max = 108000000, .step = 50000 }, - { .name = "ITU-1", .min = 87500000, .max = 108000000, .step = 50000 }, - { .name = "ITU-2", .min = 87900000, .max = 107900000, .step = 50000 } -}; - -static unsigned int bandplan; -static char line[64]; - -static void rtl_output_callback(int16_t *result, int result_len, void *ctx) -{ - radio_output_write((char*) result, result_len * 2); -} - -static void rtl_freq_callback(uint32_t freq, void *ctx) -{ - // Note, need to flush output to ensure parent sees it - printf("F=%u\n", freq); - fflush(stdout); - LOG("F=%u\n", freq); -} - -static void rtl_scan_callback(uint32_t freq, void *ctx) -{ - // Note, need to flush output to ensure parent sees it - printf("S=%u\n", freq); - fflush(stdout); - LOG("S=%u\n", freq); -} - -static void read_config(void) -{ - GKeyFile* conf_file; - int conf_file_present = 0; - char *value_str; - - // Load settings from configuration file if it exists - conf_file = g_key_file_new(); - if(conf_file && - g_key_file_load_from_dirs(conf_file, - "AGL.conf", - (const gchar**) g_get_system_config_dirs(), - NULL, - G_KEY_FILE_KEEP_COMMENTS, - NULL) == TRUE) { - conf_file_present = 1; - - // Set band plan if it is specified - value_str = g_key_file_get_string(conf_file, - "radio", - "fmbandplan", - NULL); - if(value_str) { - unsigned int i; - for(i = 0; - i < sizeof(known_fm_band_plans) / sizeof(fm_band_plan_t); - i++) { - if(!strcasecmp(value_str, known_fm_band_plans[i].name)) { - bandplan = i; - break; - } - } - } - } - fprintf(stderr, "Using FM Bandplan: %s\n", known_fm_band_plans[bandplan].name); - - if(conf_file_present) { - GError *error = NULL; - int n; - - // Allow over-riding scanning parameters just in case a demo - // setup needs to do so to work reliably. - n = g_key_file_get_integer(conf_file, - "radio", - "scan_squelch_level", - &error); - if(!error) { - fprintf(stderr, "Scanning squelch level set to %d\n", n); - rtl_fm_scan_set_squelch_level(n); - } - - error = NULL; - n = g_key_file_get_integer(conf_file, - "radio", - "scan_squelch_limit", - &error); - if(!error) { - fprintf(stderr, "Scanning squelch limit set to %d\n", n); - rtl_fm_scan_set_squelch_limit(n); - } - - g_key_file_free(conf_file); - } -} - -int main(int argc, char *argv[]) -{ - int rc; - bool detect = false; - bool done = false; - bool started = false; - uint32_t frequency; - - LOG("started\n"); - - read_config(); - frequency = known_fm_band_plans[bandplan].min; - - if(argc == 2 && strcmp(argv[1], "--detect") == 0) { - detect = true; - } - - rc = rtl_fm_init(frequency, 200000, 48000, rtl_output_callback, NULL); - if(rc < 0) { - fprintf(stderr, "No RTL USB adapter?\n"); - exit(1); - } - if(detect) { - rtl_fm_cleanup(); - exit(0); - } - - rtl_fm_set_freq_callback(rtl_freq_callback, NULL); - - while(!done) { - LOG("Reading command\n"); - if (fgets(line, sizeof(line), stdin) == NULL) - break; - if(line[0] == '\0' || line[0] == '\n') - continue; - if(strcmp(line, "START\n") == 0) { - LOG("START received\n"); - if(!started) { - LOG("Starting\n"); - radio_output_start(); - rtl_fm_start(); - started = true; - } - } else if(strcmp(line, "STOP\n") == 0) { - LOG("STOP received\n"); - if(started) { - LOG("Stopping\n"); - radio_output_stop(); - rtl_fm_stop(); - started = false; - } - } else if(strncmp(line, "F=", 2) == 0) { - uint32_t n; - if(sscanf(line, "F=%u\n", &n) == 1) { - LOG("F=%d received\n", n); - rtl_fm_scan_stop(); - rtl_fm_set_freq(n); - } - } else if(strcmp(line, "S=UP\n") == 0) { - LOG("S=UP received\n"); - if(!started) - continue; - LOG("Calling rtl_fm_scan_start\n"); - rtl_fm_scan_start(0, - rtl_scan_callback, - NULL, - known_fm_band_plans[bandplan].step, - known_fm_band_plans[bandplan].min, - known_fm_band_plans[bandplan].max); - } else if(strcmp(line, "S=DOWN\n") == 0) { - LOG("S=DOWN received\n"); - if(!started) - continue; - LOG("Calling rtl_fm_scan_start\n"); - rtl_fm_scan_start(1, - rtl_scan_callback, - NULL, - known_fm_band_plans[bandplan].step, - known_fm_band_plans[bandplan].min, - known_fm_band_plans[bandplan].max); - } else if(strcmp(line, "S=STOP\n") == 0) { - LOG("S=STOP received\n"); - if(started) { - LOG("Calling rtl_fm_scan_stop\n"); - rtl_fm_scan_stop(); - } - } else if(line[0] == 'q' || line[0] == 'Q') - break; - } - if(started) { - radio_output_stop(); - rtl_fm_stop(); - } - rtl_fm_cleanup(); - LOG("done"); - return 0; -} |