text: /* LIBUSB-WIN32, Generic Windows USB Library
   * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  
  #include <windows.h>
  #include <errno.h>
  
  /*#include "usb.h"*/
  
  #define LIBUSB_DLL_NAME "libusb0.dll"
  #define ENOFILE 2
  
  
  typedef usb_dev_handle * (*usb_open_t)(struct usb_device *dev);
  typedef int (*usb_close_t)(usb_dev_handle *dev);
  typedef int (*usb_get_string_t)(usb_dev_handle *dev, int index, int langid,
                                  char *buf, size_t buflen);
  typedef int (*usb_get_string_simple_t)(usb_dev_handle *dev, int index,
                                         char *buf, size_t buflen);
  typedef int (*usb_get_descriptor_by_endpoint_t)(usb_dev_handle *udev, int ep,
          unsigned char type,
          unsigned char index,
          void *buf, int size);
  typedef int (*usb_get_descriptor_t)(usb_dev_handle *udev, unsigned char type,
                                      unsigned char index, void *buf, int size);
  typedef int (*usb_bulk_write_t)(usb_dev_handle *dev, int ep, char *bytes,
                                  int size, int timeout);
  typedef int (*usb_bulk_read_t)(usb_dev_handle *dev, int ep, char *bytes,
                                 int size, int timeout);
  typedef int (*usb_interrupt_write_t)(usb_dev_handle *dev, int ep, char *bytes,
                                       int size, int timeout);
  typedef int (*usb_interrupt_read_t)(usb_dev_handle *dev, int ep, char *bytes,
                                      int size, int timeout);
  typedef int (*usb_control_msg_t)(usb_dev_handle *dev, int requesttype,
                                   int request, int value, int index,
                                   char *bytes, int size, int timeout);
  typedef int (*usb_set_configuration_t)(usb_dev_handle *dev, int configuration);
  typedef int (*usb_claim_interface_t)(usb_dev_handle *dev, int interface);
  typedef int (*usb_release_interface_t)(usb_dev_handle *dev, int interface);
  typedef int (*usb_set_altinterface_t)(usb_dev_handle *dev, int alternate);
  typedef int (*usb_resetep_t)(usb_dev_handle *dev, unsigned int ep);
  typedef int (*usb_clear_halt_t)(usb_dev_handle *dev, unsigned int ep);
  typedef int (*usb_reset_t)(usb_dev_handle *dev);
  typedef int (*usb_reset_ex_t)(usb_dev_handle *dev, unsigned int reset_type);
  typedef char * (*usb_strerror_t)(void);
  typedef void (*usb_init_t)(void);
  typedef void (*usb_set_debug_t)(int level);
  typedef int (*usb_find_busses_t)(void);
  typedef int (*usb_find_devices_t)(void);
  typedef struct usb_device * (*usb_device_t)(usb_dev_handle *dev);
  typedef struct usb_bus * (*usb_get_busses_t)(void);
  typedef int (*usb_install_service_np_t)(void);
  typedef int (*usb_uninstall_service_np_t)(void);
  typedef int (*usb_install_driver_np_t)(const char *inf_file);
  typedef const struct usb_version * (*usb_get_version_t)(void);
  typedef int (*usb_isochronous_setup_async_t)(usb_dev_handle *dev,
          void **context,
          unsigned char ep, int pktsize);
  typedef int (*usb_bulk_setup_async_t)(usb_dev_handle *dev, void **context,
                                        unsigned char ep);
  typedef int (*usb_interrupt_setup_async_t)(usb_dev_handle *dev, void **context,
          unsigned char ep);
  typedef int (*usb_submit_async_t)(void *context, char *bytes, int size);
  typedef int (*usb_reap_async_t)(void *context, int timeout);
  typedef int (*usb_free_async_t)(void **context);
  
  
  static usb_open_t _usb_open = NULL;
  static usb_close_t _usb_close = NULL;
  static usb_get_string_t _usb_get_string = NULL;
  static usb_get_string_simple_t _usb_get_string_simple = NULL;
  static usb_get_descriptor_by_endpoint_t _usb_get_descriptor_by_endpoint = NULL;
  static usb_get_descriptor_t _usb_get_descriptor = NULL;
  static usb_bulk_write_t _usb_bulk_write = NULL;
  static usb_bulk_read_t _usb_bulk_read = NULL;
  static usb_interrupt_write_t _usb_interrupt_write = NULL;
  static usb_interrupt_read_t _usb_interrupt_read = NULL;
  static usb_control_msg_t _usb_control_msg = NULL;
  static usb_set_configuration_t _usb_set_configuration = NULL;
  static usb_claim_interface_t _usb_claim_interface = NULL;
  static usb_release_interface_t _usb_release_interface = NULL;
  static usb_set_altinterface_t _usb_set_altinterface = NULL;
  static usb_resetep_t _usb_resetep = NULL;
  static usb_clear_halt_t _usb_clear_halt = NULL;
  static usb_reset_t _usb_reset = NULL;
  static usb_reset_ex_t _usb_reset_ex = NULL;
  static usb_strerror_t _usb_strerror = NULL;
  static usb_init_t _usb_init = NULL;
  static usb_set_debug_t _usb_set_debug = NULL;
  static usb_find_busses_t _usb_find_busses = NULL;
  static usb_find_devices_t _usb_find_devices = NULL;
  static usb_device_t _usb_device = NULL;
  static usb_get_busses_t _usb_get_busses = NULL;
  static usb_install_service_np_t _usb_install_service_np = NULL;
  static usb_uninstall_service_np_t _usb_uninstall_service_np = NULL;
  static usb_install_driver_np_t _usb_install_driver_np = NULL;
  static usb_get_version_t _usb_get_version = NULL;
  static usb_isochronous_setup_async_t _usb_isochronous_setup_async = NULL;
  static usb_bulk_setup_async_t _usb_bulk_setup_async = NULL;
  static usb_interrupt_setup_async_t _usb_interrupt_setup_async = NULL;
  static usb_submit_async_t _usb_submit_async = NULL;
  static usb_reap_async_t _usb_reap_async = NULL;
  static usb_free_async_t _usb_free_async = NULL;
  
  
  
  
  void usb_init(void)
  {
      HINSTANCE libusb_dll  = LoadLibraryA(LIBUSB_DLL_NAME);
  
      if (!libusb_dll)
          return;
  
      _usb_open = (usb_open_t)
                  GetProcAddress(libusb_dll, "usb_open");
      _usb_close = (usb_close_t)
                   GetProcAddress(libusb_dll, "usb_close");
      _usb_get_string = (usb_get_string_t)
                        GetProcAddress(libusb_dll, "usb_get_string");
      _usb_get_string_simple = (usb_get_string_simple_t)
                               GetProcAddress(libusb_dll, "usb_get_string_simple");
      _usb_get_descriptor_by_endpoint = (usb_get_descriptor_by_endpoint_t)
                                        GetProcAddress(libusb_dll, "usb_get_descriptor_by_endpoint");
      _usb_get_descriptor = (usb_get_descriptor_t)
                            GetProcAddress(libusb_dll, "usb_get_descriptor");
      _usb_bulk_write = (usb_bulk_write_t)
                        GetProcAddress(libusb_dll, "usb_bulk_write");
      _usb_bulk_read = (usb_bulk_read_t)
                       GetProcAddress(libusb_dll, "usb_bulk_read");
      _usb_interrupt_write = (usb_interrupt_write_t)
                             GetProcAddress(libusb_dll, "usb_interrupt_write");
      _usb_interrupt_read = (usb_interrupt_read_t)
                            GetProcAddress(libusb_dll, "usb_interrupt_read");
      _usb_control_msg = (usb_control_msg_t)
                         GetProcAddress(libusb_dll, "usb_control_msg");
      _usb_set_configuration = (usb_set_configuration_t)
                               GetProcAddress(libusb_dll, "usb_set_configuration");
      _usb_claim_interface = (usb_claim_interface_t)
                             GetProcAddress(libusb_dll, "usb_claim_interface");
      _usb_release_interface = (usb_release_interface_t)
                               GetProcAddress(libusb_dll, "usb_release_interface");
      _usb_set_altinterface = (usb_set_altinterface_t)
                              GetProcAddress(libusb_dll, "usb_set_altinterface");
      _usb_resetep = (usb_resetep_t)
                     GetProcAddress(libusb_dll, "usb_resetep");
      _usb_clear_halt = (usb_clear_halt_t)
                        GetProcAddress(libusb_dll, "usb_clear_halt");
      _usb_reset = (usb_reset_t)
                   GetProcAddress(libusb_dll, "usb_reset");
      _usb_reset_ex = (usb_reset_ex_t)
                   GetProcAddress(libusb_dll, "usb_reset_ex");
      _usb_strerror = (usb_strerror_t)
                      GetProcAddress(libusb_dll, "usb_strerror");
      _usb_init = (usb_init_t)
                  GetProcAddress(libusb_dll, "usb_init");
      _usb_set_debug = (usb_set_debug_t)
                       GetProcAddress(libusb_dll, "usb_set_debug");
      _usb_find_busses = (usb_find_busses_t)
                         GetProcAddress(libusb_dll, "usb_find_busses");
      _usb_find_devices = (usb_find_devices_t)
                          GetProcAddress(libusb_dll, "usb_find_devices");
      _usb_device = (usb_device_t)
                    GetProcAddress(libusb_dll, "usb_device");
      _usb_get_busses = (usb_get_busses_t)
                        GetProcAddress(libusb_dll, "usb_get_busses");
      _usb_install_service_np = (usb_install_service_np_t)
                                GetProcAddress(libusb_dll, "usb_install_service_np");
      _usb_uninstall_service_np = (usb_uninstall_service_np_t)
                                  GetProcAddress(libusb_dll, "usb_uninstall_service_np");
      _usb_install_driver_np = (usb_install_driver_np_t)
                               GetProcAddress(libusb_dll, "usb_install_driver_np");
      _usb_get_version = (usb_get_version_t)
                         GetProcAddress(libusb_dll, "usb_get_version");
      _usb_isochronous_setup_async = (usb_isochronous_setup_async_t)
                                     GetProcAddress(libusb_dll, "usb_isochronous_setup_async");
      _usb_bulk_setup_async = (usb_bulk_setup_async_t)
                              GetProcAddress(libusb_dll, "usb_bulk_setup_async");
      _usb_interrupt_setup_async = (usb_interrupt_setup_async_t)
                                   GetProcAddress(libusb_dll, "usb_interrupt_setup_async");
      _usb_submit_async = (usb_submit_async_t)
                          GetProcAddress(libusb_dll, "usb_submit_async");
      _usb_reap_async = (usb_reap_async_t)
                        GetProcAddress(libusb_dll, "usb_reap_async");
      _usb_free_async = (usb_free_async_t)
                        GetProcAddress(libusb_dll, "usb_free_async");
  
      if (_usb_init)
          _usb_init();
  }
  
  usb_dev_handle *usb_open(struct usb_device *dev)
  {
      if (_usb_open)
          return _usb_open(dev);
      else
          return NULL;
  }
  
  int usb_close(usb_dev_handle *dev)
  {
      if (_usb_close)
          return _usb_close(dev);
      else
          return -ENOFILE;
  }
  
  int usb_get_string(usb_dev_handle *dev, int index, int langid, char *buf,
                     size_t buflen)
  {
      if (_usb_get_string)
          return _usb_get_string(dev, index, langid, buf, buflen);
      else
          return -ENOFILE;
  }
  
  int usb_get_string_simple(usb_dev_handle *dev, int index, char *buf,
                            size_t buflen)
  {
      if (_usb_get_string_simple)
          return _usb_get_string_simple(dev, index, buf, buflen);
      else
          return -ENOFILE;
  }
  
  int usb_get_descriptor_by_endpoint(usb_dev_handle *udev, int ep,
                                     unsigned char type, unsigned char index,
                                     void *buf, int size)
  {
      if (_usb_get_descriptor_by_endpoint)
          return _usb_get_descriptor_by_endpoint(udev, ep, type, index, buf, size);
      else
          return -ENOFILE;
  }
  
  int usb_get_descriptor(usb_dev_handle *udev, unsigned char type,
                         unsigned char index, void *buf, int size)
  {
      if (_usb_get_descriptor)
          return _usb_get_descriptor(udev, type, index, buf, size);
      else
          return -ENOFILE;
  }
  
  int usb_bulk_write(usb_dev_handle *dev, int ep, char *bytes, int size,
                     int timeout)
  {
      if (_usb_bulk_write)
          return _usb_bulk_write(dev, ep, bytes, size, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_bulk_read(usb_dev_handle *dev, int ep, char *bytes, int size,
                    int timeout)
  {
      if (_usb_bulk_read)
          return _usb_bulk_read(dev, ep, bytes, size, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_interrupt_write(usb_dev_handle *dev, int ep, char *bytes, int size,
                          int timeout)
  {
      if (_usb_interrupt_write)
          return _usb_interrupt_write(dev, ep, bytes, size, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_interrupt_read(usb_dev_handle *dev, int ep, char *bytes, int size,
                         int timeout)
  {
      if (_usb_interrupt_read)
          return _usb_interrupt_read(dev, ep, bytes, size, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_control_msg(usb_dev_handle *dev, int requesttype, int request,
                      int value, int index, char *bytes, int size,
                      int timeout)
  {
      if (_usb_control_msg)
          return _usb_control_msg(dev, requesttype, request, value, index, bytes,
                                  size, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_set_configuration(usb_dev_handle *dev, int configuration)
  {
      if (_usb_set_configuration)
          return _usb_set_configuration(dev, configuration);
      else
          return -ENOFILE;
  }
  
  int usb_claim_interface(usb_dev_handle *dev, int interface)
  {
      if (_usb_claim_interface)
          return _usb_claim_interface(dev, interface);
      else
          return -ENOFILE;
  }
  
  int usb_release_interface(usb_dev_handle *dev, int interface)
  {
      if (_usb_release_interface)
          return _usb_release_interface(dev, interface);
      else
          return -ENOFILE;
  }
  
  int usb_set_altinterface(usb_dev_handle *dev, int alternate)
  {
      if (_usb_set_altinterface)
          return _usb_set_altinterface(dev, alternate);
      else
          return -ENOFILE;
  }
  
  int usb_resetep(usb_dev_handle *dev, unsigned int ep)
  {
      if (_usb_resetep)
          return _usb_resetep(dev, ep);
      else
          return -ENOFILE;
  }
  
  int usb_clear_halt(usb_dev_handle *dev, unsigned int ep)
  {
      if (_usb_clear_halt)
          return _usb_clear_halt(dev, ep);
      else
          return -ENOFILE;
  }
  
  int usb_reset(usb_dev_handle *dev)
  {
      if (_usb_reset)
          return _usb_reset(dev);
      else
          return -ENOFILE;
  }
  
  int usb_reset_ex(usb_dev_handle *dev, unsigned int reset_type)
  {
      if (_usb_reset_ex)
          return _usb_reset_ex(dev, reset_type);
      else
          return -ENOFILE;
  }
  
  char *usb_strerror(void)
  {
      if (_usb_strerror)
          return _usb_strerror();
      else
          return NULL;
  }
  
  void usb_set_debug(int level)
  {
      if (_usb_set_debug)
          /*return*/ _usb_set_debug(level);
  }
  
  int usb_find_busses(void)
  {
      if (_usb_find_busses)
          return _usb_find_busses();
      else
          return -ENOFILE;
  }
  
  int usb_find_devices(void)
  {
      if (_usb_find_devices)
          return _usb_find_devices();
      else
          return -ENOFILE;
  }
  
  struct usb_device *usb_device(usb_dev_handle *dev)
  {
      if (_usb_device)
          return _usb_device(dev);
      else
          return NULL;
  }
  
  struct usb_bus *usb_get_busses(void)
  {
      if (_usb_get_busses)
          return _usb_get_busses();
      else
          return NULL;
  }
  
  int usb_install_service_np(void)
  {
      if (_usb_install_service_np)
          return _usb_install_service_np();
      else
          return -ENOFILE;
  }
  
  int usb_uninstall_service_np(void)
  {
      if (_usb_uninstall_service_np)
          return _usb_uninstall_service_np();
      else
          return -ENOFILE;
  }
  
  int usb_install_driver_np(const char *inf_file)
  {
      if (_usb_install_driver_np)
          return _usb_install_driver_np(inf_file);
      else
          return -ENOFILE;
  }
  
  const struct usb_version *usb_get_version(void)
  {
      if (_usb_get_version)
          return _usb_get_version();
      else
          return NULL;
  }
  
  int usb_isochronous_setup_async(usb_dev_handle *dev, void **context,
                                  unsigned char ep, int pktsize)
  {
      if (_usb_isochronous_setup_async)
          return _usb_isochronous_setup_async(dev, context, ep, pktsize);
      else
          return -ENOFILE;
  }
  
  int usb_bulk_setup_async(usb_dev_handle *dev, void **context,
                           unsigned char ep)
  {
      if (_usb_bulk_setup_async)
          return _usb_bulk_setup_async(dev, context, ep);
      else
          return -ENOFILE;
  }
  
  int usb_interrupt_setup_async(usb_dev_handle *dev, void **context,
                                unsigned char ep)
  {
      if (_usb_interrupt_setup_async)
          return _usb_interrupt_setup_async(dev, context, ep);
      else
          return -ENOFILE;
  }
  
  int usb_submit_async(void *context, char *bytes, int size)
  {
      if (_usb_submit_async)
          return _usb_submit_async(context, bytes, size);
      else
          return -ENOFILE;
  }
  
  int usb_reap_async(void *context, int timeout)
  {
      if (_usb_reap_async)
          return _usb_reap_async(context, timeout);
      else
          return -ENOFILE;
  }
  
  int usb_free_async(void **context)
  {
      if (_usb_free_async)
          return _usb_free_async(context);
      else
          return -ENOFILE;
  }
  