1 files changed, 77 insertions, 0 deletions
diff --git a/vendor/github.com/karalabe/gousb/usb/descriptor.go b/vendor/github.com/karalabe/gousb/usb/descriptor.go
new file mode 100644
index 000000000..2551dfc23
--- /dev/null
+++ b/vendor/github.com/karalabe/gousb/usb/descriptor.go
@@ -0,0 +1,77 @@
+// Copyright 2013 Google Inc.  All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package usb
+
+/*
+#ifndef OS_WINDOWS
+	#include "os/threads_posix.h"
+#endif
+#include "libusbi.h"
+#include "libusb.h"
+*/
+import "C"
+
+type Descriptor struct {
+	// Bus information
+	Bus     uint8 // The bus on which the device was detected
+	Address uint8 // The address of the device on the bus
+
+	// Version information
+	Spec   BCD // USB Specification Release Number
+	Device BCD // The device version
+
+	// Product information
+	Vendor  ID // The Vendor identifer
+	Product ID // The Product identifier
+
+	// Protocol information
+	Class    uint8 // The class of this device
+	SubClass uint8 // The sub-class (within the class) of this device
+	Protocol uint8 // The protocol (within the sub-class) of this device
+
+	// Configuration information
+	Configs []ConfigInfo
+}
+
+func newDescriptor(dev *C.libusb_device) (*Descriptor, error) {
+	var desc C.struct_libusb_device_descriptor
+	if errno := C.libusb_get_device_descriptor(dev, &desc); errno < 0 {
+		return nil, usbError(errno)
+	}
+
+	// Enumerate configurations
+	var cfgs []ConfigInfo
+	for i := 0; i < int(desc.bNumConfigurations); i++ {
+		var cfg *C.struct_libusb_config_descriptor
+		if errno := C.libusb_get_config_descriptor(dev, C.uint8_t(i), &cfg); errno < 0 {
+			return nil, usbError(errno)
+		}
+		cfgs = append(cfgs, newConfig(dev, cfg))
+		C.libusb_free_config_descriptor(cfg)
+	}
+
+	return &Descriptor{
+		Bus:      uint8(C.libusb_get_bus_number(dev)),
+		Address:  uint8(C.libusb_get_device_address(dev)),
+		Spec:     BCD(desc.bcdUSB),
+		Device:   BCD(desc.bcdDevice),
+		Vendor:   ID(desc.idVendor),
+		Product:  ID(desc.idProduct),
+		Class:    uint8(desc.bDeviceClass),
+		SubClass: uint8(desc.bDeviceSubClass),
+		Protocol: uint8(desc.bDeviceProtocol),
+		Configs:  cfgs,
+	}, nil
+}