diff options
| author | Dimitri Stolnikov <horiz0n@gmx.net> | 2012-05-06 00:34:13 +0200 |
|---|---|---|
| committer | Dimitri Stolnikov <horiz0n@gmx.net> | 2012-05-06 00:34:13 +0200 |
| commit | 9167a01248cdc28f5145cd1b2c5abfdc57a099bf (patch) | |
| tree | 56af3668b3984b06e95bc061e0c24fa476a11119 /src/main.c | |
| parent | e9251da6e238a64018d3a4b64d4d4593aa7acbfb (diff) | |
consolidate program arguments
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/src/main.c b/src/main.c deleted file mode 100644 index 9cdf2da..0000000 --- a/src/main.c +++ /dev/null @@ -1,267 +0,0 @@ -/* - * rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver - * Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de> - * - * 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/>. - */ - -#include <errno.h> -#include <signal.h> -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> - -#ifndef _WIN32 -#include <unistd.h> -#else -#include <Windows.h> -#endif - -#include "rtl-sdr.h" - -#define DEFAULT_SAMPLE_RATE 2048000 -#define DEFAULT_ASYNC_BUF_NUMBER 32 -#define DEFAULT_BUF_LENGTH (16 * 16384) -#define MINIMAL_BUF_LENGTH 512 -#define MAXIMAL_BUF_LENGTH (256 * 16384) - -static int do_exit = 0; -static rtlsdr_dev_t *dev = NULL; - -void usage(void) -{ - #ifdef _WIN32 - fprintf(stderr,"rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n" - "Usage:\t rtl-sdr-win.exe [device_index] [samplerate in kHz] " - "[gain] [frequency in hz] [filename]\n"); - #else - fprintf(stderr, - "rtl-sdr, an I/Q recorder for RTL2832 based DVB-T receivers\n\n" - "Usage:\t -f frequency_to_tune_to [Hz]\n" - "\t[-s samplerate (default: 2048000 Hz)]\n" - "\t[-d device_index (default: 0)]\n" - "\t[-g tuner_gain (default: 0 dB)]\n" - "\t[-b output_block_size (default: 16 * 16384)]\n" - "\t[-S force sync output (default: async)]\n" - "\toutput_filename (a '-' dumps samples to stdout)\n\n"); -#endif - exit(1); -} - -#ifdef _WIN32 -BOOL WINAPI -sighandler(int signum) -{ - if (CTRL_C_EVENT == signum) { - fprintf(stderr, "Signal caught, exiting!\n"); - do_exit = 1; - rtlsdr_cancel_async(dev); - return TRUE; - } - return FALSE; -} -#else -static void sighandler(int signum) -{ - fprintf(stderr, "Signal caught, exiting!\n"); - do_exit = 1; - rtlsdr_cancel_async(dev); -} -#endif - -static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx) -{ - if (ctx) { - if (fwrite(buf, 1, len, (FILE*)ctx) != len) { - fprintf(stderr, "Short write, samples lost, exiting!\n"); - rtlsdr_cancel_async(dev); - } - } -} - -int main(int argc, char **argv) -{ -#ifndef _WIN32 - struct sigaction sigact; -#endif - char *filename = NULL; - int n_read; - int r, opt; - int i, gain = 0; - int sync_mode = 0; - FILE *file; - uint8_t *buffer; - uint32_t dev_index = 0; - uint32_t frequency = 0; - uint32_t samp_rate = DEFAULT_SAMPLE_RATE; - uint32_t out_block_size = DEFAULT_BUF_LENGTH; - int device_count; -#ifndef _WIN32 - while ((opt = getopt(argc, argv, "d:f:g:s:b:S::")) != -1) { - switch (opt) { - case 'd': - dev_index = atoi(optarg); - break; - case 'f': - frequency = (uint32_t)atof(optarg); - break; - case 'g': - gain = atoi(optarg); - break; - case 's': - samp_rate = (int)atof(optarg); - break; - case 'b': - out_block_size = (uint32_t)atof(optarg); - break; - case 'S': - sync_mode = 1; - break; - default: - usage(); - break; - } - } - - if (argc <= optind) { - usage(); - } else { - filename = argv[optind]; - } -#else - if(argc <6) - usage(); - dev_index = atoi(argv[1]); - samp_rate = atoi(argv[2])*1000; - gain=atoi(argv[3]); - frequency = atoi(argv[4]); - filename = argv[5]; -#endif - if(out_block_size < MINIMAL_BUF_LENGTH || - out_block_size > MAXIMAL_BUF_LENGTH ){ - fprintf(stderr, - "Output block size wrong value, falling back to default\n"); - fprintf(stderr, - "Minimal length: %u\n", MINIMAL_BUF_LENGTH); - fprintf(stderr, - "Maximal length: %u\n", MAXIMAL_BUF_LENGTH); - out_block_size = DEFAULT_BUF_LENGTH; - } - - buffer = malloc(out_block_size * sizeof(uint8_t)); - - device_count = rtlsdr_get_device_count(); - if (!device_count) { - fprintf(stderr, "No supported devices found.\n"); - exit(1); - } - - fprintf(stderr, "Found %d device(s):\n", device_count); - for (i = 0; i < device_count; i++) - fprintf(stderr, " %d: %s\n", i, rtlsdr_get_device_name(i)); - fprintf(stderr, "\n"); - - fprintf(stderr, "Using device %d: %s\n", - dev_index, - rtlsdr_get_device_name(dev_index)); - - r = rtlsdr_open(&dev, dev_index); - if (r < 0) { - fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index); - exit(1); - } -#ifndef _WIN32 - sigact.sa_handler = sighandler; - sigemptyset(&sigact.sa_mask); - sigact.sa_flags = 0; - sigaction(SIGINT, &sigact, NULL); - sigaction(SIGTERM, &sigact, NULL); - sigaction(SIGQUIT, &sigact, NULL); - sigaction(SIGPIPE, &sigact, NULL); -#else - SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE ); -#endif - /* Set the sample rate */ - r = rtlsdr_set_sample_rate(dev, samp_rate); - if (r < 0) - fprintf(stderr, "WARNING: Failed to set sample rate.\n"); - - /* Set the frequency */ - r = rtlsdr_set_center_freq(dev, frequency); - if (r < 0) - fprintf(stderr, "WARNING: Failed to set center freq.\n"); - else - fprintf(stderr, "Tuned to %u Hz.\n", frequency); - - /* Set the tuner gain */ - r = rtlsdr_set_tuner_gain(dev, gain); - if (r < 0) - fprintf(stderr, "WARNING: Failed to set tuner gain.\n"); - else - fprintf(stderr, "Tuner gain set to %i dB.\n", gain); - - if(strcmp(filename, "-") == 0) { /* Write samples to stdout */ - file = stdout; - } else { - file = fopen(filename, "wb"); - if (!file) { - fprintf(stderr, "Failed to open %s\n", filename); - goto out; - } - } - - /* Reset endpoint before we start reading from it (mandatory) */ - r = rtlsdr_reset_buffer(dev); - if (r < 0) - fprintf(stderr, "WARNING: Failed to reset buffers.\n"); - - if (sync_mode) { - fprintf(stderr, "Reading samples in sync mode...\n"); - while (!do_exit) { - r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read); - if (r < 0) { - fprintf(stderr, "WARNING: sync read failed.\n"); - break; - } - - if (fwrite(buffer, 1, n_read, file) != (size_t)n_read) { - fprintf(stderr, "Short write, samples lost, exiting!\n"); - break; - } - - if ((uint32_t)n_read < out_block_size) { - fprintf(stderr, "Short read, samples lost, exiting!\n"); - break; - } - } - } else { - fprintf(stderr, "Reading samples in async mode...\n"); - r = rtlsdr_read_async(dev, rtlsdr_callback, (void *)file, - DEFAULT_ASYNC_BUF_NUMBER, out_block_size); - } - - if (do_exit) - fprintf(stderr, "\nUser cancel, exiting...\n"); - else - fprintf(stderr, "\nLibrary error %d, exiting...\n", r); - - if (file != stdout) - fclose(file); - - rtlsdr_close(dev); - free (buffer); -out: - return r >= 0 ? r : -r; -} |
