host/windows/usb/winusb/adb_winusb_interface.cpp - platform/development - Git at Google

 /*
  * Copyright (C) 2009 The Android Open Source Project
  *
  * 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.
  */

 /** \file
   This file consists of implementation of class AdbWinUsbInterfaceObject
   that encapsulates an interface on our USB device that is accessible
   via WinUsb API.
 */

 #include "stdafx.h"
 #include "adb_winusb_interface.h"
 #include "adb_winusb_endpoint_object.h"

 AdbWinUsbInterfaceObject::AdbWinUsbInterfaceObject(const wchar_t* interf_name)
     : AdbInterfaceObject(interf_name),
       usb_device_handle_(INVALID_HANDLE_VALUE),
       winusb_handle_(NULL),
       interface_number_(0xFF),
       def_read_endpoint_(0xFF),
       read_endpoint_id_(0xFF),
       def_write_endpoint_(0xFF),
       write_endpoint_id_(0xFF) {
 }

 AdbWinUsbInterfaceObject::~AdbWinUsbInterfaceObject() {
   ATLASSERT(NULL == winusb_handle_);
   ATLASSERT(INVALID_HANDLE_VALUE == usb_device_handle_);
 }

 LONG AdbWinUsbInterfaceObject::Release() {
   ATLASSERT(ref_count_ > 0);
   LONG ret = InterlockedDecrement(&ref_count_);
   ATLASSERT(ret >= 0);
   if (0 == ret) {
     LastReferenceReleased();
     delete this;
   }
   return ret;
 }

 ADBAPIHANDLE AdbWinUsbInterfaceObject::CreateHandle() {
   // Open USB device for this inteface Note that WinUsb API
   // requires the handle to be opened for overlapped I/O.
   usb_device_handle_ = CreateFile(interface_name().c_str(),
                                   GENERIC_READ | GENERIC_WRITE,
                                   FILE_SHARE_READ | FILE_SHARE_WRITE,
                                   NULL, OPEN_EXISTING,
                                   FILE_FLAG_OVERLAPPED, NULL);
   if (INVALID_HANDLE_VALUE == usb_device_handle_)
     return NULL;

   // Initialize WinUSB API for this interface
   if (!WinUsb_Initialize(usb_device_handle_, &winusb_handle_))
     return NULL;

   // Cache current interface number that will be used in
   // WinUsb_Xxx calls performed on this interface.
   if (!WinUsb_GetCurrentAlternateSetting(winusb_handle(), &interface_number_))
     return false;

   // Cache interface properties
   unsigned long bytes_written;

   // Cache USB device descriptor
   if (!WinUsb_GetDescriptor(winusb_handle(), USB_DEVICE_DESCRIPTOR_TYPE, 0, 0,
                             reinterpret_cast<PUCHAR>(&usb_device_descriptor_),
                             sizeof(usb_device_descriptor_), &bytes_written)) {
     return false;
   }

   // Cache USB configuration descriptor
   if (!WinUsb_GetDescriptor(winusb_handle(), USB_CONFIGURATION_DESCRIPTOR_TYPE,
                             0, 0,
                             reinterpret_cast<PUCHAR>(&usb_config_descriptor_),
                             sizeof(usb_config_descriptor_), &bytes_written)) {
     return false;
   }

   // Cache USB interface descriptor
   if (!WinUsb_QueryInterfaceSettings(winusb_handle(), interface_number(),
                                      &usb_interface_descriptor_)) {
     return false;
   }

   // Save indexes and IDs for bulk read / write endpoints. We will use them to
   // convert ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX and
   // ADB_QUERY_BULK_READ_ENDPOINT_INDEX into actual endpoint indexes and IDs.
   for (UCHAR endpoint = 0; endpoint < usb_interface_descriptor_.bNumEndpoints;
        endpoint++) {
     // Get endpoint information
     WINUSB_PIPE_INFORMATION pipe_info;
     if (!WinUsb_QueryPipe(winusb_handle(), interface_number(), endpoint,
                           &pipe_info)) {
       return false;
     }

     if (UsbdPipeTypeBulk == pipe_info.PipeType) {
       // This is a bulk endpoint. Cache its index and ID.
       if (0 != (pipe_info.PipeId & USB_ENDPOINT_DIRECTION_MASK)) {
         // Use this endpoint as default bulk read endpoint
         ATLASSERT(0xFF == def_read_endpoint_);
         def_read_endpoint_ = endpoint;
         read_endpoint_id_ = pipe_info.PipeId;
       } else {
         // Use this endpoint as default bulk write endpoint
         ATLASSERT(0xFF == def_write_endpoint_);
         def_write_endpoint_ = endpoint;
         write_endpoint_id_ = pipe_info.PipeId;
       }
     }
   }

   return AdbInterfaceObject::CreateHandle();
 }

 bool AdbWinUsbInterfaceObject::CloseHandle() {
   if (NULL != winusb_handle_) {
     WinUsb_Free(winusb_handle_);
     winusb_handle_ = NULL;
   }
   if (INVALID_HANDLE_VALUE != usb_device_handle_) {
     ::CloseHandle(usb_device_handle_);
     usb_device_handle_ = INVALID_HANDLE_VALUE;
   }

   return AdbInterfaceObject::CloseHandle();
 }

 bool AdbWinUsbInterfaceObject::GetSerialNumber(void* buffer,
                                                unsigned long* buffer_char_size,
                                                bool ansi) {
   if (!IsOpened()) {
     SetLastError(ERROR_INVALID_HANDLE);
     return false;
   }

   if (NULL == buffer_char_size) {
     SetLastError(ERROR_INVALID_PARAMETER);
     return false;
   }

   // Calculate serial number string size. Note that WinUsb_GetDescriptor
   // API will not return number of bytes needed to store serial number
   // string. So we will have to start with a reasonably large preallocated
   // buffer and then loop through WinUsb_GetDescriptor calls, doubling up
   // string buffer size every time ERROR_INSUFFICIENT_BUFFER is returned.
   union {
     // Preallocate reasonably sized buffer on the stack.
     char small_buffer[64];
     USB_STRING_DESCRIPTOR initial_ser_num;
   };
   USB_STRING_DESCRIPTOR* ser_num = &initial_ser_num;
   // Buffer byte size
   unsigned long ser_num_size = sizeof(small_buffer);
   // After successful call to WinUsb_GetDescriptor will contain serial
   // number descriptor size.
   unsigned long bytes_written;
   while (!WinUsb_GetDescriptor(winusb_handle(), USB_STRING_DESCRIPTOR_TYPE,
                                usb_device_descriptor_.iSerialNumber,
                                0x0409, // English (US)
                                reinterpret_cast<PUCHAR>(ser_num),
                                ser_num_size, &bytes_written)) {
     // Any error other than ERROR_INSUFFICIENT_BUFFER is terminal here.
     if (ERROR_INSUFFICIENT_BUFFER != GetLastError()) {
       if (ser_num != &initial_ser_num)
         delete[] reinterpret_cast<char*>(ser_num);
       return false;
     }

     // Double up buffer size and reallocate string buffer
     ser_num_size *= 2;
     if (ser_num != &initial_ser_num)
       delete[] reinterpret_cast<char*>(ser_num);
     try {
       ser_num =
           reinterpret_cast<USB_STRING_DESCRIPTOR*>(new char[ser_num_size]);
     } catch (...) {
       SetLastError(ERROR_OUTOFMEMORY);
       return false;
     }
   }

   // Serial number string length
   unsigned long str_len = (ser_num->bLength -
                            FIELD_OFFSET(USB_STRING_DESCRIPTOR, bString)) /
                           sizeof(wchar_t);

   // Lets see if requested buffer is big enough to fit the string
   if ((NULL == buffer) || (*buffer_char_size < (str_len + 1))) {
     // Requested buffer is too small.
     if (ser_num != &initial_ser_num)
       delete[] reinterpret_cast<char*>(ser_num);
     *buffer_char_size = str_len + 1;
     SetLastError(ERROR_INSUFFICIENT_BUFFER);
     return false;
   }

   bool ret = true;
   if (ansi) {
     // We need to convert name from wide char to ansi string
     if (0 != WideCharToMultiByte(CP_ACP, 0, ser_num->bString,
                                  static_cast<int>(str_len),
                                  reinterpret_cast<PSTR>(buffer),
                                  static_cast<int>(*buffer_char_size),
                                  NULL, NULL)) {
       // Zero-terminate output string.
       reinterpret_cast<char*>(buffer)[str_len] = '\0';
     } else {
       ret = false;
     }
   } else {
     // For wide char output just copy string buffer,
     // and zero-terminate output string.
     CopyMemory(buffer, ser_num->bString, bytes_written);
     reinterpret_cast<wchar_t*>(buffer)[str_len] = L'\0';
   }

   if (ser_num != &initial_ser_num)
     delete[] reinterpret_cast<char*>(ser_num);

   return ret;
 }

 bool AdbWinUsbInterfaceObject::GetEndpointInformation(
     UCHAR endpoint_index,
     AdbEndpointInformation* info) {
   if (!IsOpened()) {
     SetLastError(ERROR_INVALID_HANDLE);
     return false;
   }

   if (NULL == info) {
     SetLastError(ERROR_INVALID_PARAMETER);
     return false;
   }

   // Get actual endpoint index for predefined read / write endpoints.
   if (ADB_QUERY_BULK_READ_ENDPOINT_INDEX == endpoint_index) {
     endpoint_index = def_read_endpoint_;
   } else if (ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX == endpoint_index) {
     endpoint_index = def_write_endpoint_;
   }

   // Query endpoint information
   WINUSB_PIPE_INFORMATION pipe_info;
   if (!WinUsb_QueryPipe(winusb_handle(), interface_number(), endpoint_index,
                         &pipe_info)) {
     return false;
   }

   // Save endpoint information into output.
   info->max_packet_size = pipe_info.MaximumPacketSize;
   info->max_transfer_size = 0xFFFFFFFF;
   info->endpoint_address = pipe_info.PipeId;
   info->polling_interval = pipe_info.Interval;
   info->setting_index = interface_number();
   switch (pipe_info.PipeType) {
     case UsbdPipeTypeControl:
       info->endpoint_type = AdbEndpointTypeControl;
       break;

     case UsbdPipeTypeIsochronous:
       info->endpoint_type = AdbEndpointTypeIsochronous;
       break;

     case UsbdPipeTypeBulk:
       info->endpoint_type = AdbEndpointTypeBulk;
       break;

     case UsbdPipeTypeInterrupt:
       info->endpoint_type = AdbEndpointTypeInterrupt;
       break;

     default:
       info->endpoint_type = AdbEndpointTypeInvalid;
       break;
   }

   return true;
 }

 ADBAPIHANDLE AdbWinUsbInterfaceObject::OpenEndpoint(
     UCHAR endpoint_index,
     AdbOpenAccessType access_type,
     AdbOpenSharingMode sharing_mode) {
   // Convert index into id
   UCHAR endpoint_id;

   if ((ADB_QUERY_BULK_READ_ENDPOINT_INDEX == endpoint_index) ||
       (def_read_endpoint_ == endpoint_index)) {
     endpoint_id = read_endpoint_id_;
     endpoint_index = def_read_endpoint_;
   } else if ((ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX == endpoint_index) ||
              (def_write_endpoint_ == endpoint_index)) {
     endpoint_id = write_endpoint_id_;
     endpoint_index = def_write_endpoint_;
   } else {
     SetLastError(ERROR_INVALID_PARAMETER);
     return false;
   }

   return OpenEndpoint(endpoint_id, endpoint_index);
 }

 ADBAPIHANDLE AdbWinUsbInterfaceObject::OpenEndpoint(UCHAR endpoint_id,
                                                     UCHAR endpoint_index) {
   if (!IsOpened()) {
     SetLastError(ERROR_INVALID_HANDLE);
     return false;
   }

   AdbEndpointObject* adb_endpoint = NULL;

   try {
     adb_endpoint =
         new AdbWinUsbEndpointObject(this, endpoint_id, endpoint_index);
   } catch (...) {
     SetLastError(ERROR_OUTOFMEMORY);
     return NULL;
   }

   ADBAPIHANDLE ret = adb_endpoint->CreateHandle();

   adb_endpoint->Release();

   return ret;
 }
	/*
	* Copyright (C) 2009 The Android Open Source Project
	*
	* 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.
	*/

	/** \file
	This file consists of implementation of class AdbWinUsbInterfaceObject
	that encapsulates an interface on our USB device that is accessible
	via WinUsb API.
	*/

	#include "stdafx.h"
	#include "adb_winusb_interface.h"
	#include "adb_winusb_endpoint_object.h"

	AdbWinUsbInterfaceObject::AdbWinUsbInterfaceObject(const wchar_t* interf_name)
	: AdbInterfaceObject(interf_name),
	usb_device_handle_(INVALID_HANDLE_VALUE),
	winusb_handle_(NULL),
	interface_number_(0xFF),
	def_read_endpoint_(0xFF),
	read_endpoint_id_(0xFF),
	def_write_endpoint_(0xFF),
	write_endpoint_id_(0xFF) {
	}

	AdbWinUsbInterfaceObject::~AdbWinUsbInterfaceObject() {
	ATLASSERT(NULL == winusb_handle_);
	ATLASSERT(INVALID_HANDLE_VALUE == usb_device_handle_);
	}

	LONG AdbWinUsbInterfaceObject::Release() {
	ATLASSERT(ref_count_ > 0);
	LONG ret = InterlockedDecrement(&ref_count_);
	ATLASSERT(ret >= 0);
	if (0 == ret) {
	LastReferenceReleased();
	delete this;
	}
	return ret;
	}

	ADBAPIHANDLE AdbWinUsbInterfaceObject::CreateHandle() {
	// Open USB device for this inteface Note that WinUsb API
	// requires the handle to be opened for overlapped I/O.
	usb_device_handle_ = CreateFile(interface_name().c_str(),
	GENERIC_READ \| GENERIC_WRITE,
	FILE_SHARE_READ \| FILE_SHARE_WRITE,
	NULL, OPEN_EXISTING,
	FILE_FLAG_OVERLAPPED, NULL);
	if (INVALID_HANDLE_VALUE == usb_device_handle_)
	return NULL;

	// Initialize WinUSB API for this interface
	if (!WinUsb_Initialize(usb_device_handle_, &winusb_handle_))
	return NULL;

	// Cache current interface number that will be used in
	// WinUsb_Xxx calls performed on this interface.
	if (!WinUsb_GetCurrentAlternateSetting(winusb_handle(), &interface_number_))
	return false;

	// Cache interface properties
	unsigned long bytes_written;

	// Cache USB device descriptor
	if (!WinUsb_GetDescriptor(winusb_handle(), USB_DEVICE_DESCRIPTOR_TYPE, 0, 0,
	reinterpret_cast<PUCHAR>(&usb_device_descriptor_),
	sizeof(usb_device_descriptor_), &bytes_written)) {
	return false;
	}

	// Cache USB configuration descriptor
	if (!WinUsb_GetDescriptor(winusb_handle(), USB_CONFIGURATION_DESCRIPTOR_TYPE,
	0, 0,
	reinterpret_cast<PUCHAR>(&usb_config_descriptor_),
	sizeof(usb_config_descriptor_), &bytes_written)) {
	return false;
	}

	// Cache USB interface descriptor
	if (!WinUsb_QueryInterfaceSettings(winusb_handle(), interface_number(),
	&usb_interface_descriptor_)) {
	return false;
	}

	// Save indexes and IDs for bulk read / write endpoints. We will use them to
	// convert ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX and
	// ADB_QUERY_BULK_READ_ENDPOINT_INDEX into actual endpoint indexes and IDs.
	for (UCHAR endpoint = 0; endpoint < usb_interface_descriptor_.bNumEndpoints;
	endpoint++) {
	// Get endpoint information
	WINUSB_PIPE_INFORMATION pipe_info;
	if (!WinUsb_QueryPipe(winusb_handle(), interface_number(), endpoint,
	&pipe_info)) {
	return false;
	}

	if (UsbdPipeTypeBulk == pipe_info.PipeType) {
	// This is a bulk endpoint. Cache its index and ID.
	if (0 != (pipe_info.PipeId & USB_ENDPOINT_DIRECTION_MASK)) {
	// Use this endpoint as default bulk read endpoint
	ATLASSERT(0xFF == def_read_endpoint_);
	def_read_endpoint_ = endpoint;
	read_endpoint_id_ = pipe_info.PipeId;
	} else {
	// Use this endpoint as default bulk write endpoint
	ATLASSERT(0xFF == def_write_endpoint_);
	def_write_endpoint_ = endpoint;
	write_endpoint_id_ = pipe_info.PipeId;
	}
	}
	}

	return AdbInterfaceObject::CreateHandle();
	}

	bool AdbWinUsbInterfaceObject::CloseHandle() {
	if (NULL != winusb_handle_) {
	WinUsb_Free(winusb_handle_);
	winusb_handle_ = NULL;
	}
	if (INVALID_HANDLE_VALUE != usb_device_handle_) {
	::CloseHandle(usb_device_handle_);
	usb_device_handle_ = INVALID_HANDLE_VALUE;
	}

	return AdbInterfaceObject::CloseHandle();
	}

	bool AdbWinUsbInterfaceObject::GetSerialNumber(void* buffer,
	unsigned long* buffer_char_size,
	bool ansi) {
	if (!IsOpened()) {
	SetLastError(ERROR_INVALID_HANDLE);
	return false;
	}

	if (NULL == buffer_char_size) {
	SetLastError(ERROR_INVALID_PARAMETER);
	return false;
	}

	// Calculate serial number string size. Note that WinUsb_GetDescriptor
	// API will not return number of bytes needed to store serial number
	// string. So we will have to start with a reasonably large preallocated
	// buffer and then loop through WinUsb_GetDescriptor calls, doubling up
	// string buffer size every time ERROR_INSUFFICIENT_BUFFER is returned.
	union {
	// Preallocate reasonably sized buffer on the stack.
	char small_buffer[64];
	USB_STRING_DESCRIPTOR initial_ser_num;
	};
	USB_STRING_DESCRIPTOR* ser_num = &initial_ser_num;
	// Buffer byte size
	unsigned long ser_num_size = sizeof(small_buffer);
	// After successful call to WinUsb_GetDescriptor will contain serial
	// number descriptor size.
	unsigned long bytes_written;
	while (!WinUsb_GetDescriptor(winusb_handle(), USB_STRING_DESCRIPTOR_TYPE,
	usb_device_descriptor_.iSerialNumber,
	0x0409, // English (US)
	reinterpret_cast<PUCHAR>(ser_num),
	ser_num_size, &bytes_written)) {
	// Any error other than ERROR_INSUFFICIENT_BUFFER is terminal here.
	if (ERROR_INSUFFICIENT_BUFFER != GetLastError()) {
	if (ser_num != &initial_ser_num)
	delete[] reinterpret_cast<char*>(ser_num);
	return false;
	}

	// Double up buffer size and reallocate string buffer
	ser_num_size *= 2;
	if (ser_num != &initial_ser_num)
	delete[] reinterpret_cast<char*>(ser_num);
	try {
	ser_num =
	reinterpret_cast<USB_STRING_DESCRIPTOR*>(new char[ser_num_size]);
	} catch (...) {
	SetLastError(ERROR_OUTOFMEMORY);
	return false;
	}
	}

	// Serial number string length
	unsigned long str_len = (ser_num->bLength -
	FIELD_OFFSET(USB_STRING_DESCRIPTOR, bString)) /
	sizeof(wchar_t);

	// Lets see if requested buffer is big enough to fit the string
	if ((NULL == buffer) \|\| (*buffer_char_size < (str_len + 1))) {
	// Requested buffer is too small.
	if (ser_num != &initial_ser_num)
	delete[] reinterpret_cast<char*>(ser_num);
	*buffer_char_size = str_len + 1;
	SetLastError(ERROR_INSUFFICIENT_BUFFER);
	return false;
	}

	bool ret = true;
	if (ansi) {
	// We need to convert name from wide char to ansi string
	if (0 != WideCharToMultiByte(CP_ACP, 0, ser_num->bString,
	static_cast<int>(str_len),
	reinterpret_cast<PSTR>(buffer),
	static_cast<int>(*buffer_char_size),
	NULL, NULL)) {
	// Zero-terminate output string.
	reinterpret_cast<char*>(buffer)[str_len] = '\0';
	} else {
	ret = false;
	}
	} else {
	// For wide char output just copy string buffer,
	// and zero-terminate output string.
	CopyMemory(buffer, ser_num->bString, bytes_written);
	reinterpret_cast<wchar_t*>(buffer)[str_len] = L'\0';
	}

	if (ser_num != &initial_ser_num)
	delete[] reinterpret_cast<char*>(ser_num);

	return ret;
	}

	bool AdbWinUsbInterfaceObject::GetEndpointInformation(
	UCHAR endpoint_index,
	AdbEndpointInformation* info) {
	if (!IsOpened()) {
	SetLastError(ERROR_INVALID_HANDLE);
	return false;
	}

	if (NULL == info) {
	SetLastError(ERROR_INVALID_PARAMETER);
	return false;
	}

	// Get actual endpoint index for predefined read / write endpoints.
	if (ADB_QUERY_BULK_READ_ENDPOINT_INDEX == endpoint_index) {
	endpoint_index = def_read_endpoint_;
	} else if (ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX == endpoint_index) {
	endpoint_index = def_write_endpoint_;
	}

	// Query endpoint information
	WINUSB_PIPE_INFORMATION pipe_info;
	if (!WinUsb_QueryPipe(winusb_handle(), interface_number(), endpoint_index,
	&pipe_info)) {
	return false;
	}

	// Save endpoint information into output.
	info->max_packet_size = pipe_info.MaximumPacketSize;
	info->max_transfer_size = 0xFFFFFFFF;
	info->endpoint_address = pipe_info.PipeId;
	info->polling_interval = pipe_info.Interval;
	info->setting_index = interface_number();
	switch (pipe_info.PipeType) {
	case UsbdPipeTypeControl:
	info->endpoint_type = AdbEndpointTypeControl;
	break;

	case UsbdPipeTypeIsochronous:
	info->endpoint_type = AdbEndpointTypeIsochronous;
	break;

	case UsbdPipeTypeBulk:
	info->endpoint_type = AdbEndpointTypeBulk;
	break;

	case UsbdPipeTypeInterrupt:
	info->endpoint_type = AdbEndpointTypeInterrupt;
	break;

	default:
	info->endpoint_type = AdbEndpointTypeInvalid;
	break;
	}

	return true;
	}

	ADBAPIHANDLE AdbWinUsbInterfaceObject::OpenEndpoint(
	UCHAR endpoint_index,
	AdbOpenAccessType access_type,
	AdbOpenSharingMode sharing_mode) {
	// Convert index into id
	UCHAR endpoint_id;

	if ((ADB_QUERY_BULK_READ_ENDPOINT_INDEX == endpoint_index) \|\|
	(def_read_endpoint_ == endpoint_index)) {
	endpoint_id = read_endpoint_id_;
	endpoint_index = def_read_endpoint_;
	} else if ((ADB_QUERY_BULK_WRITE_ENDPOINT_INDEX == endpoint_index) \|\|
	(def_write_endpoint_ == endpoint_index)) {
	endpoint_id = write_endpoint_id_;
	endpoint_index = def_write_endpoint_;
	} else {
	SetLastError(ERROR_INVALID_PARAMETER);
	return false;
	}

	return OpenEndpoint(endpoint_id, endpoint_index);
	}

	ADBAPIHANDLE AdbWinUsbInterfaceObject::OpenEndpoint(UCHAR endpoint_id,
	UCHAR endpoint_index) {
	if (!IsOpened()) {
	SetLastError(ERROR_INVALID_HANDLE);
	return false;
	}

	AdbEndpointObject* adb_endpoint = NULL;

	try {
	adb_endpoint =
	new AdbWinUsbEndpointObject(this, endpoint_id, endpoint_index);
	} catch (...) {
	SetLastError(ERROR_OUTOFMEMORY);
	return NULL;
	}

	ADBAPIHANDLE ret = adb_endpoint->CreateHandle();

	adb_endpoint->Release();

	return ret;
	}