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rtl_tcp: add parameter for changing number of buffers

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This is useful for devices with low memory, e.g.
routers with OpenWRT (decrease to 8 for example).

Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf 2012-05-29 02:40:49 +02:00
parent d08c4770ab
commit 92d936568c
1 changed files with 8 additions and 3 deletions
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11
src/rtl_tcp.c
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@ -85,6 +85,7 @@ void usage(void)
"\t[-f frequency to tune to [Hz]]\n" "\t[-f frequency to tune to [Hz]]\n"
"\t[-g gain (default: 0 for auto)]\n" "\t[-g gain (default: 0 for auto)]\n"
"\t[-s samplerate in Hz (default: 2048000 Hz)]\n" "\t[-s samplerate in Hz (default: 2048000 Hz)]\n"
"\t[-b number of buffers (default: 32, set by library)]\n"
"\t[-d device index (default: 0)]\n"); "\t[-d device index (default: 0)]\n");
exit(1); exit(1);
} }
@ -308,7 +309,7 @@ int main(int argc, char **argv)
uint32_t frequency = 100000000, samp_rate = 2048000; uint32_t frequency = 100000000, samp_rate = 2048000;
struct sockaddr_in local, remote; struct sockaddr_in local, remote;
int device_count; int device_count;
uint32_t dev_index = 0; uint32_t dev_index = 0, buf_num = 0;
int gain = 0; int gain = 0;
struct llist *curelem,*prev; struct llist *curelem,*prev;
pthread_attr_t attr; pthread_attr_t attr;
@ -326,7 +327,7 @@ int main(int argc, char **argv)
struct sigaction sigact; struct sigaction sigact;
#endif #endif
while ((opt = getopt(argc, argv, "a:p:f:g:s:d:")) != -1) { while ((opt = getopt(argc, argv, "a:p:f:g:s:b:d:")) != -1) {
switch (opt) { switch (opt) {
case 'd': case 'd':
dev_index = atoi(optarg); dev_index = atoi(optarg);
@ -346,6 +347,9 @@ int main(int argc, char **argv)
case 'p': case 'p':
port = atoi(optarg); port = atoi(optarg);
break; break;
case 'b':
buf_num = atoi(optarg);
break;
default: default:
usage(); usage();
break; break;
@ -474,7 +478,8 @@ int main(int argc, char **argv)
r = pthread_create(&command_thread, &attr, command_worker, NULL); r = pthread_create(&command_thread, &attr, command_worker, NULL);
pthread_attr_destroy(&attr); pthread_attr_destroy(&attr);
rtlsdr_wait_async(dev, rtlsdr_callback, (void *)0); r = rtlsdr_read_async(dev, rtlsdr_callback, (void *)0,
buf_num, 0);
closesocket(s); closesocket(s);
if(!dead[0]) if(!dead[0])