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/*
* Windows backend common header for libusb 1.0
*
* This file brings together header code common between
* the desktop Windows and Windows CE backends.
* Copyright © 2012-2013 RealVNC Ltd.
* Copyright © 2009-2012 Pete Batard <pete@akeo.ie>
* With contributions from Michael Plante, Orin Eman et al.
* Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
* Major code testing contribution by Xiaofan Chen
*
* 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 2.1 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
// Windows API default is uppercase - ugh!
#if !defined(bool)
#define bool BOOL
#endif
#if !defined(true)
#define true TRUE
#endif
#if !defined(false)
#define false FALSE
#endif
#define EPOCH_TIME UINT64_C(116444736000000000) // 1970.01.01 00:00:000 in MS Filetime
#if defined(__CYGWIN__ )
#define _stricmp strcasecmp
#define _strdup strdup
// _beginthreadex is MSVCRT => unavailable for cygwin. Fallback to using CreateThread
#define _beginthreadex(a, b, c, d, e, f) CreateThread(a, b, (LPTHREAD_START_ROUTINE)c, d, e, (LPDWORD)f)
#endif
#define safe_free(p) do {if (p != NULL) {free((void *)p); p = NULL;}} while (0)
#ifndef ARRAYSIZE
#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
#endif
#define ERR_BUFFER_SIZE 256
/*
* API macros - leveraged from libusb-win32 1.x
*/
#ifndef _WIN32_WCE
#define DLL_STRINGIFY(s) #s
#define DLL_LOAD_LIBRARY(name) LoadLibraryA(DLL_STRINGIFY(name))
#else
#define DLL_STRINGIFY(s) L#s
#define DLL_LOAD_LIBRARY(name) LoadLibrary(DLL_STRINGIFY(name))
#endif
/*
* Macros for handling DLL themselves
*/
#define DLL_DECLARE_HANDLE(name) \
static HMODULE __dll_##name##_handle = NULL
#define DLL_GET_HANDLE(name) \
do { \
__dll_##name##_handle = DLL_LOAD_LIBRARY(name); \
if (!__dll_##name##_handle) \
return LIBUSB_ERROR_NOT_FOUND; \
} while (0)
#define DLL_FREE_HANDLE(name) \
do { \
if (__dll_##name##_handle) { \
FreeLibrary(__dll_##name##_handle); \
__dll_##name##_handle = NULL; \
} \
} while (0)
/*
* Macros for handling functions within a DLL
*/
#define DLL_DECLARE_FUNC_PREFIXNAME(api, ret, prefixname, name, args) \
typedef ret (api * __dll_##name##_func_t)args; \
static __dll_##name##_func_t prefixname = NULL
#define DLL_DECLARE_FUNC(api, ret, name, args) \
DLL_DECLARE_FUNC_PREFIXNAME(api, ret, name, name, args)
#define DLL_DECLARE_FUNC_PREFIXED(api, ret, prefix, name, args) \
DLL_DECLARE_FUNC_PREFIXNAME(api, ret, prefix##name, name, args)
#define DLL_LOAD_FUNC_PREFIXNAME(dll, prefixname, name, ret_on_failure) \
do { \
HMODULE h = __dll_##dll##_handle; \
prefixname = (__dll_##name##_func_t)GetProcAddress(h, \
DLL_STRINGIFY(name)); \
if (prefixname) \
break; \
prefixname = (__dll_##name##_func_t)GetProcAddress(h, \
DLL_STRINGIFY(name) DLL_STRINGIFY(A)); \
if (prefixname) \
break; \
prefixname = (__dll_##name##_func_t)GetProcAddress(h, \
DLL_STRINGIFY(name) DLL_STRINGIFY(W)); \
if (prefixname) \
break; \
if (ret_on_failure) \
return LIBUSB_ERROR_NOT_FOUND; \
} while (0)
#define DLL_LOAD_FUNC(dll, name, ret_on_failure) \
DLL_LOAD_FUNC_PREFIXNAME(dll, name, name, ret_on_failure)
#define DLL_LOAD_FUNC_PREFIXED(dll, prefix, name, ret_on_failure) \
DLL_LOAD_FUNC_PREFIXNAME(dll, prefix##name, name, ret_on_failure)
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