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-rw-r--r--include/rtl-sdr.h5
-rw-r--r--src/librtlsdr.c2
-rw-r--r--src/rtl_fm.c4
-rw-r--r--src/rtl_sdr.c3
-rw-r--r--src/rtl_tcp.c2
-rw-r--r--src/rtl_test.c3
6 files changed, 8 insertions, 11 deletions
diff --git a/include/rtl-sdr.h b/include/rtl-sdr.h
index a07fc60..489e117 100644
--- a/include/rtl-sdr.h
+++ b/include/rtl-sdr.h
@@ -351,9 +351,10 @@ RTLSDR_API int rtlsdr_wait_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, v
* \param cb callback function to return received samples
* \param ctx user specific context to pass via the callback function
* \param buf_num optional buffer count, buf_num * buf_len = overall buffer size
- * set to 0 for default buffer count (32)
+ * set to 0 for default buffer count (15)
* \param buf_len optional buffer length, must be multiple of 512,
- * set to 0 for default buffer length (16 * 32 * 512)
+ * should be a multiple of 16384 (URB size), set to 0
+ * for default buffer length (16 * 32 * 512)
* \return 0 on success
*/
RTLSDR_API int rtlsdr_read_async(rtlsdr_dev_t *dev,
diff --git a/src/librtlsdr.c b/src/librtlsdr.c
index 5062827..9a3ebcd 100644
--- a/src/librtlsdr.c
+++ b/src/librtlsdr.c
@@ -338,7 +338,7 @@ static rtlsdr_dongle_t known_devices[] = {
{ 0x1f4d, 0xd803, "PROlectrix DV107669" },
};
-#define DEFAULT_BUF_NUMBER 32
+#define DEFAULT_BUF_NUMBER 15
#define DEFAULT_BUF_LENGTH (16 * 32 * 512)
#define DEF_RTL_XTAL_FREQ 28800000
diff --git a/src/rtl_fm.c b/src/rtl_fm.c
index 9831431..0f7ac38 100644
--- a/src/rtl_fm.c
+++ b/src/rtl_fm.c
@@ -76,7 +76,6 @@
#include "convenience/convenience.h"
#define DEFAULT_SAMPLE_RATE 24000
-#define DEFAULT_ASYNC_BUF_NUMBER 32
#define DEFAULT_BUF_LENGTH (1 * 16384)
#define MAXIMUM_OVERSAMPLE 16
#define MAXIMUM_BUF_LENGTH (MAXIMUM_OVERSAMPLE * DEFAULT_BUF_LENGTH)
@@ -807,8 +806,7 @@ static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
static void *dongle_thread_fn(void *arg)
{
struct dongle_state *s = arg;
- rtlsdr_read_async(s->dev, rtlsdr_callback, s,
- DEFAULT_ASYNC_BUF_NUMBER, s->buf_len);
+ rtlsdr_read_async(s->dev, rtlsdr_callback, s, 0, s->buf_len);
return 0;
}
diff --git a/src/rtl_sdr.c b/src/rtl_sdr.c
index 0c6a707..e6537ca 100644
--- a/src/rtl_sdr.c
+++ b/src/rtl_sdr.c
@@ -35,7 +35,6 @@
#include "convenience/convenience.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)
@@ -261,7 +260,7 @@ int main(int argc, char **argv)
} 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);
+ 0, out_block_size);
}
if (do_exit)
diff --git a/src/rtl_tcp.c b/src/rtl_tcp.c
index 915a8fe..a54666a 100644
--- a/src/rtl_tcp.c
+++ b/src/rtl_tcp.c
@@ -92,7 +92,7 @@ void usage(void)
"\t[-f frequency to tune to [Hz]]\n"
"\t[-g gain (default: 0 for auto)]\n"
"\t[-s samplerate in Hz (default: 2048000 Hz)]\n"
- "\t[-b number of buffers (default: 32, set by library)]\n"
+ "\t[-b number of buffers (default: 15, set by library)]\n"
"\t[-n max number of linked list buffers to keep (default: 500)]\n"
"\t[-d device index (default: 0)]\n"
"\t[-P ppm_error (default: 0)]\n");
diff --git a/src/rtl_test.c b/src/rtl_test.c
index 8bf567e..9a6cfda 100644
--- a/src/rtl_test.c
+++ b/src/rtl_test.c
@@ -44,7 +44,6 @@
#include "convenience/convenience.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)
@@ -406,7 +405,7 @@ int main(int argc, char **argv)
} else {
fprintf(stderr, "Reading samples in async mode...\n");
r = rtlsdr_read_async(dev, rtlsdr_callback, NULL,
- DEFAULT_ASYNC_BUF_NUMBER, out_block_size);
+ 0, out_block_size);
}
if (do_exit) {