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From 247bed453e19e3b2aa8f5858c8ac310cbbf3830f Mon Sep 17 00:00:00 2001
From: Youssef Touil <youssef@live.com>
Date: Sat, 12 Jul 2025 14:10:14 +0200
Subject: [PATCH 45/46] Increased the buffer size to 4k samples; Removed IQ
balancer eval skip; Set the Win32 thread priority to THREAD_PRIORITY_HIGHEST;
Fixed the bis-tee conrol call.
---
libairspyhf/src/airspyhf.c | 23 +++++------------------
libairspyhf/src/airspyhf.h | 5 +++++
2 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/libairspyhf/src/airspyhf.c b/libairspyhf/src/airspyhf.c
index 3d5a6ff..a4400f6 100644
--- a/libairspyhf/src/airspyhf.c
+++ b/libairspyhf/src/airspyhf.c
@@ -52,7 +52,7 @@ typedef int bool;
#define MAX(a,b) ((a) > (b) ? a : b)
#define MIN(a,b) ((a) < (b) ? a : b)
-#define SAMPLES_TO_TRANSFER (1024 * 2)
+#define SAMPLES_TO_TRANSFER (1024 * 4)
#define SERIAL_NUMBER_UNUSED (0)
#define FILE_DESCRIPTOR_UNUSED (-1)
#define RAW_BUFFER_COUNT (8)
@@ -79,8 +79,6 @@ static const char str_prefix_serial_airspyhf[STR_PREFIX_SERIAL_AIRSPYHF_SIZE] =
#define LIBUSB_CTRL_TIMEOUT_MS (500)
-#define IQ_BALANCER_EVAL_SKIP (RAW_BUFFER_COUNT)
-
#pragma pack(push,1)
typedef struct {
@@ -121,7 +119,6 @@ typedef struct airspyhf_device
float filter_gain;
airspyhf_complex_float_t vec;
struct iq_balancer_t *iq_balancer;
- volatile int32_t iq_balancer_eval_skip;
uint32_t transfer_count;
int32_t transfer_live;
uint32_t buffer_size;
@@ -325,7 +322,6 @@ static void convert_samples(airspyhf_device_t* device, airspyhf_complex_int16_t
airspyhf_complex_float_t rot;
double angle;
float conversion_gain;
- uint8_t iqb_eval_skip = 0;
conversion_gain = scale * device->filter_gain;
@@ -335,18 +331,12 @@ static void convert_samples(airspyhf_device_t* device, airspyhf_complex_int16_t
dest[i].im = src[i].im * conversion_gain;
}
- if (device->iq_balancer_eval_skip > 0)
- {
- device->iq_balancer_eval_skip--;
- iqb_eval_skip = 1;
- }
-
if (device->enable_dsp)
{
if (!device->is_low_if)
{
// Zero IF requires external IQ correction
- iq_balancer_process(device->iq_balancer, dest, count, iqb_eval_skip);
+ iq_balancer_process(device->iq_balancer, dest, count, 0);
}
// Fine tuning
@@ -380,7 +370,7 @@ static void* consumer_threadproc(void *arg)
#ifdef _WIN32
- SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
+ SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
#endif
@@ -486,7 +476,7 @@ static void* transfer_threadproc(void* arg)
#ifdef _WIN32
- SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
+ SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
#endif
@@ -1109,7 +1099,6 @@ static int airspyhf_open_init(airspyhf_device_t** device, uint64_t serial_number
}
lib_device->iq_balancer = iq_balancer_create(INITIAL_PHASE, INITIAL_AMPLITUDE);
- lib_device->iq_balancer_eval_skip = 0;
*device = lib_device;
@@ -1384,8 +1373,6 @@ int ADDCALL airspyhf_set_freq_double(airspyhf_device_t* device, const double fre
if (device->freq_khz != freq_khz)
{
- device->iq_balancer_eval_skip = IQ_BALANCER_EVAL_SKIP;
-
buf[0] = (uint8_t)((freq_khz >> 24) & 0xff);
buf[1] = (uint8_t)((freq_khz >> 16) & 0xff);
buf[2] = (uint8_t)((freq_khz >> 8) & 0xff);
@@ -1743,7 +1730,7 @@ int ADDCALL airspyhf_get_bias_tee_count(airspyhf_device_t* device, int32_t* valu
uint8_t length;
int result;
- length = sizeof(airspyhf_read_partid_serialno_t);
+ length = sizeof(int32_t);
result = libusb_control_transfer(
device->usb_device,
LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
diff --git a/libairspyhf/src/airspyhf.h b/libairspyhf/src/airspyhf.h
index 2879120..0b90110 100644
--- a/libairspyhf/src/airspyhf.h
+++ b/libairspyhf/src/airspyhf.h
@@ -83,6 +83,7 @@ enum airspyhf_board_id
AIRSPYHF_BOARD_ID_UNKNOWN_AIRSPYHF = 0,
AIRSPYHF_BOARD_ID_AIRSPYHF_REV_A = 1,
AIRSPYHF_BOARD_ID_AIRSPYHF_DISCOVERY_REV_A = 2,
+ AIRSPYHF_BOARD_ID_AIRSPYHF_RANGER_REV_A = 3,
AIRSPYHF_BOARD_ID_INVALID = 0xFF,
};
@@ -105,6 +106,10 @@ typedef struct {
#define MAX_NAME_STRING_SIZE (64)
#define MAX_VERSION_STRING_SIZE MAX_NAME_STRING_SIZE
+#define AIRSPYHF_FLAGS_NONE 0
+#define AIRSPYHF_FLAGS_OPTIMIZE_BAND_III 1
+#define AIRSPYHF_FLAGS_OPTIMIZE_PLL_INT_BOUNDARY 2
+
typedef int (*airspyhf_sample_block_cb_fn) (airspyhf_transfer_t* transfer_fn);
extern ADDAPI void ADDCALL airspyhf_lib_version(airspyhf_lib_version_t* lib_version);
--
2.47.3
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