diff options
Diffstat (limited to 'gusb/gusb-device.c')
| -rw-r--r-- | gusb/gusb-device.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/gusb/gusb-device.c b/gusb/gusb-device.c index 81f90ad..beec181 100644 --- a/gusb/gusb-device.c +++ b/gusb/gusb-device.c @@ -24,6 +24,7 @@ #include "gusb-util.h" #include "gusb-device-private.h" #include "gusb-interface-private.h" +#include "gusb-bos-descriptor-private.h" /** * GUsbDevicePrivate: @@ -607,6 +608,108 @@ g_usb_device_get_interfaces (GUsbDevice *device, GError **error) } /** + * g_usb_device_get_bos_descriptor: + * @device: a #GUsbDevice + * @capability: a BOS capability type + * @error: a #GError, or %NULL + * + * Gets the first bos_descriptor that matches the descriptor capability. + * If you want to find all the BOS descriptors that match (there may be other matching BOS + * descriptors you have to use `g_usb_device_get_bos_descriptors()` and check each one manually. + * + * Return value: (transfer full): a #GUsbBosDescriptor or %NULL for not found + * + * Since: 0.4.0 + **/ +GUsbBosDescriptor * +g_usb_device_get_bos_descriptor (GUsbDevice *device, + guint8 capability, + GError **error) +{ + gint rc; + guint8 num_device_caps; + GUsbBosDescriptor *bos_descriptor = NULL; + struct libusb_bos_descriptor *bos = NULL; + + g_return_val_if_fail (G_USB_IS_DEVICE (device), NULL); + g_return_val_if_fail (error == NULL || *error == NULL, NULL); + + rc = libusb_get_bos_descriptor (device->priv->handle, &bos); + if (!g_usb_device_libusb_error_to_gerror (device, rc, error)) + return NULL; + + /* find the right data */ +#ifdef __FreeBSD__ + num_device_caps = bos->bNumDeviceCapabilities; +#else + num_device_caps = bos->bNumDeviceCaps; +#endif + for (guint i = 0; i < num_device_caps; i++) { + struct libusb_bos_dev_capability_descriptor *bos_cap = bos->dev_capability[i]; + if (bos_cap->bDevCapabilityType == capability) { + bos_descriptor = _g_usb_bos_descriptor_new (bos_cap); + break; + } + } + + /* nothing matched */ + if (bos_descriptor == NULL) { + g_set_error (error, + G_USB_DEVICE_ERROR, + G_USB_DEVICE_ERROR_NOT_SUPPORTED, + "no BOS descriptor for capability 0x%02x", + capability); + } + + libusb_free_bos_descriptor (bos); + return bos_descriptor; +} + +/** + * g_usb_device_get_bos_descriptors: + * @device: a #GUsbDevice + * @error: a #GError, or %NULL + * + * Gets all the BOS descriptors exported by the device. + * + * Return value: (transfer container) (element-type GUsbBosDescriptor): an array of BOS descriptors + * + * Since: 0.4.0 + **/ +GPtrArray * +g_usb_device_get_bos_descriptors (GUsbDevice *device, GError **error) +{ + gint rc; + guint8 num_device_caps; + struct libusb_bos_descriptor *bos = NULL; + GPtrArray *array = NULL; + + g_return_val_if_fail (G_USB_IS_DEVICE (device), NULL); + g_return_val_if_fail (error == NULL || *error == NULL, NULL); + + rc = libusb_get_bos_descriptor (device->priv->handle, &bos); + if (!g_usb_device_libusb_error_to_gerror (device, rc, error)) + return NULL; + + /* get all BOS descriptors */ + array = g_ptr_array_new_with_free_func ((GDestroyNotify) g_object_unref); +#ifdef __FreeBSD__ + num_device_caps = bos->bNumDeviceCapabilities; +#else + num_device_caps = bos->bNumDeviceCaps; +#endif + for (guint i = 0; i < num_device_caps; i++) { + GUsbBosDescriptor *bos_descriptor = NULL; + struct libusb_bos_dev_capability_descriptor *bos_cap = bos->dev_capability[i]; + bos_descriptor = _g_usb_bos_descriptor_new (bos_cap); + g_ptr_array_add (array, bos_descriptor); + } + + libusb_free_bos_descriptor (bos); + return array; +} + +/** * g_usb_device_close: * @device: a #GUsbDevice * @error: a #GError, or %NULL |