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From cd41ea7c9affcb22ba6f4e1cbae7fff27efc533e Mon Sep 17 00:00:00 2001
From: AlexandreRouma <alexandre.rouma@gmail.com>
Date: Thu, 1 Sep 2022 21:31:43 +0200
Subject: [PATCH 09/29] Added android support
---
libairspy/src/airspy.c | 97 +++++++++++++++++++++++++++++++++++-------
libairspy/src/airspy.h | 1 +
2 files changed, 83 insertions(+), 15 deletions(-)
diff --git a/libairspy/src/airspy.c b/libairspy/src/airspy.c
index d86d7aa..fa04e71 100644
--- a/libairspy/src/airspy.c
+++ b/libairspy/src/airspy.c
@@ -62,6 +62,7 @@ typedef int bool;
#define SAMPLE_SCALE (1.0f / (1 << (15 - SAMPLE_SHIFT)))
#define SERIAL_NUMBER_UNUSED (0ULL)
+#define FILE_DESCRIPTOR_UNUSED (-1)
#define USB_PRODUCT_ID (2)
#define STR_DESCRIPTOR_SIZE (250)
@@ -113,11 +114,11 @@ static const uint16_t airspy_usb_pid = 0x60a1;
#define GAIN_COUNT (22)
-uint8_t airspy_linearity_vga_gains[GAIN_COUNT] = { 13, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 6, 5, 4 };
-uint8_t airspy_linearity_mixer_gains[GAIN_COUNT] = { 12, 12, 11, 9, 8, 7, 6, 6, 5, 0, 0, 1, 0, 0, 2, 2, 1, 1, 1, 1, 0, 0 };
-uint8_t airspy_linearity_lna_gains[GAIN_COUNT] = { 14, 14, 14, 13, 12, 10, 9, 9, 8, 9, 8, 6, 5, 3, 1, 0, 0, 0, 0, 0, 0, 0 };
-uint8_t airspy_sensitivity_vga_gains[GAIN_COUNT] = { 13, 12, 11, 10, 9, 8, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4 };
-uint8_t airspy_sensitivity_mixer_gains[GAIN_COUNT] = { 12, 12, 12, 12, 11, 10, 10, 9, 9, 8, 7, 4, 4, 4, 3, 2, 2, 1, 0, 0, 0, 0 };
+uint8_t airspy_linearity_vga_gains[GAIN_COUNT] = { 13, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 6, 5, 4 };
+uint8_t airspy_linearity_mixer_gains[GAIN_COUNT] = { 12, 12, 11, 9, 8, 7, 6, 6, 5, 0, 0, 1, 0, 0, 2, 2, 1, 1, 1, 1, 0, 0 };
+uint8_t airspy_linearity_lna_gains[GAIN_COUNT] = { 14, 14, 14, 13, 12, 10, 9, 9, 8, 9, 8, 6, 5, 3, 1, 0, 0, 0, 0, 0, 0, 0 };
+uint8_t airspy_sensitivity_vga_gains[GAIN_COUNT] = { 13, 12, 11, 10, 9, 8, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4 };
+uint8_t airspy_sensitivity_mixer_gains[GAIN_COUNT] = { 12, 12, 12, 12, 11, 10, 10, 9, 9, 8, 7, 4, 4, 4, 3, 2, 2, 1, 0, 0, 0, 0 };
uint8_t airspy_sensitivity_lna_gains[GAIN_COUNT] = { 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 9, 9, 8, 7, 6, 5, 3, 2, 1, 0 };
static int cancel_transfers(airspy_device_t* device)
@@ -433,7 +434,7 @@ static void* consumer_threadproc(void *arg)
}
pthread_mutex_unlock(&device->consumer_mp);
-
+
pthread_exit(NULL);
return NULL;
@@ -506,7 +507,7 @@ static void* transfer_threadproc(void* arg)
device->stop_requested = true;
}
}
-
+
pthread_exit(NULL);
return NULL;
@@ -746,6 +747,51 @@ static void airspy_open_device(airspy_device_t* device,
return;
}
+static void airspy_open_device_fd(airspy_device_t* device,
+ int* ret,
+ int fd)
+{
+ int result;
+
+ result = libusb_wrap_sys_device(device->usb_context, (intptr_t)fd, &device->usb_device);
+ if (result != 0 || device->usb_device == NULL)
+ {
+ *ret = AIRSPY_ERROR_LIBUSB;
+ return;
+ }
+
+#ifdef __linux__
+ /* Check whether a kernel driver is attached to interface #0. If so, we'll
+ * need to detach it.
+ */
+ if (libusb_kernel_driver_active(device->usb_device, 0))
+ {
+ libusb_detach_kernel_driver(device->usb_device, 0);
+ }
+#endif
+
+ result = libusb_set_configuration(device->usb_device, 1);
+ if (result != 0)
+ {
+ libusb_close(device->usb_device);
+ device->usb_device = NULL;
+ *ret = AIRSPY_ERROR_LIBUSB;
+ return;
+ }
+
+ result = libusb_claim_interface(device->usb_device, 0);
+ if (result != 0)
+ {
+ libusb_close(device->usb_device);
+ device->usb_device = NULL;
+ *ret = AIRSPY_ERROR_LIBUSB;
+ return;
+ }
+
+ *ret = AIRSPY_SUCCESS;
+ return;
+}
+
static int airspy_read_samplerates_from_fw(struct airspy_device* device, uint32_t* buffer, const uint32_t len)
{
int result;
@@ -768,7 +814,7 @@ static int airspy_read_samplerates_from_fw(struct airspy_device* device, uint32_
return AIRSPY_SUCCESS;
}
-static int airspy_open_init(airspy_device_t** device, uint64_t serial_number)
+static int airspy_open_init(airspy_device_t** device, uint64_t serial_number, int fd)
{
airspy_device_t* lib_device;
int libusb_error;
@@ -782,6 +828,11 @@ static int airspy_open_init(airspy_device_t** device, uint64_t serial_number)
return AIRSPY_ERROR_NO_MEM;
}
+#ifdef __ANDROID__
+ // LibUSB does not support device discovery on android
+ libusb_set_option(NULL, LIBUSB_OPTION_NO_DEVICE_DISCOVERY, NULL);
+#endif
+
libusb_error = libusb_init(&lib_device->usb_context);
if (libusb_error != 0)
{
@@ -789,11 +840,19 @@ static int airspy_open_init(airspy_device_t** device, uint64_t serial_number)
return AIRSPY_ERROR_LIBUSB;
}
- airspy_open_device(lib_device,
- &result,
- airspy_usb_vid,
- airspy_usb_pid,
- serial_number);
+ if (fd == FILE_DESCRIPTOR_UNUSED) {
+ airspy_open_device(lib_device,
+ &result,
+ airspy_usb_vid,
+ airspy_usb_pid,
+ serial_number);
+ }
+ else {
+ airspy_open_device_fd(lib_device,
+ &result,
+ fd);
+ }
+
if (lib_device->usb_device == NULL)
{
libusb_exit(lib_device->usb_context);
@@ -962,7 +1021,15 @@ int airspy_list_devices(uint64_t *serials, int count)
{
int result;
- result = airspy_open_init(device, serial_number);
+ result = airspy_open_init(device, serial_number, FILE_DESCRIPTOR_UNUSED);
+ return result;
+ }
+
+ int ADDCALL airspy_open_fd(airspy_device_t** device, int fd)
+ {
+ int result;
+
+ result = airspy_open_init(device, SERIAL_NUMBER_UNUSED, fd);
return result;
}
@@ -970,7 +1037,7 @@ int airspy_list_devices(uint64_t *serials, int count)
{
int result;
- result = airspy_open_init(device, SERIAL_NUMBER_UNUSED);
+ result = airspy_open_init(device, SERIAL_NUMBER_UNUSED, FILE_DESCRIPTOR_UNUSED);
return result;
}
diff --git a/libairspy/src/airspy.h b/libairspy/src/airspy.h
index ff83033..952eee3 100644
--- a/libairspy/src/airspy.h
+++ b/libairspy/src/airspy.h
@@ -126,6 +126,7 @@ extern ADDAPI int ADDCALL airspy_exit(void);
extern ADDAPI int ADDCALL airspy_list_devices(uint64_t *serials, int count);
extern ADDAPI int ADDCALL airspy_open_sn(struct airspy_device** device, uint64_t serial_number);
+extern ADDAPI int ADDCALL airspy_open_fd(struct airspy_device** device, int fd);
extern ADDAPI int ADDCALL airspy_open(struct airspy_device** device);
extern ADDAPI int ADDCALL airspy_close(struct airspy_device* device);
--
2.47.3
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