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rtl_fm: osx does not like semaphores

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Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Kyle Keen
2013-01-30 17:40:00 -05:00
committed by Steve Markgraf
parent 8d358b44d4
commit ea4dbd242d
2 changed files with 17 additions and 16 deletions
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14
src/rtl_adsb.c
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@ -37,7 +37,6 @@
#include "getopt/getopt.h"
#endif
#include <semaphore.h>
#include <pthread.h>
#include <libusb.h>
@ -59,7 +58,7 @@
#define BADSAMPLE 255
static pthread_t demod_thread;
static sem_t data_ready;
static pthread_mutex_t data_ready; /* locked when no data available */
static volatile int do_exit = 0;
static rtlsdr_dev_t *dev = NULL;
@ -334,20 +333,18 @@ void messages(uint16_t *buf, int len)
static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
{
int dr_val;
if (do_exit) {
return;}
memcpy(buffer, buf, len);
sem_getvalue(&data_ready, &dr_val);
if (dr_val <= 0) {
sem_post(&data_ready);}
pthread_mutex_trylock(&data_ready);
pthread_mutex_unlock(&data_ready);
}
static void *demod_thread_fn(void *arg)
{
int len;
while (!do_exit) {
sem_wait(&data_ready);
pthread_mutex_lock(&data_ready);
len = magnitute(buffer, DEFAULT_BUF_LENGTH);
manchester((uint16_t*)buffer, len);
messages((uint16_t*)buffer, len);
@ -368,7 +365,7 @@ int main(int argc, char **argv)
int device_count;
int ppm_error = 0;
char vendor[256], product[256], serial[256];
sem_init(&data_ready, 0, 0);
pthread_mutex_init(&data_ready, NULL);
squares_precompute();
while ((opt = getopt(argc, argv, "d:g:p:e:Q:VS")) != -1)
@ -507,6 +504,7 @@ int main(int argc, char **argv)
else {
fprintf(stderr, "\nLibrary error %d, exiting...\n", r);}
rtlsdr_cancel_async(dev);
pthread_mutex_destroy(&data_ready);
if (file != stdout) {
fclose(file);}