dlls/dinput/keyboard/main.c - wine - Git at Google

 /*		DirectInput Keyboard device
  *
  * Copyright 1998 Marcus Meissner
  * Copyright 1998,1999 Lionel Ulmer
  * Copyright 2000-2001 TransGaming Technologies Inc.
  *
  * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */

 #include "config.h"
 #include "wine/port.h"

 #include <string.h>
 #ifdef HAVE_SYS_ERRNO_H
 # include <sys/errno.h>
 #endif

 #include "winbase.h"
 #include "winuser.h"
 #include "winerror.h"
 #include "dinput.h"

 #include "dinput_private.h"
 #include "device_private.h"
 #include "wine/debug.h"

 WINE_DEFAULT_DEBUG_CHANNEL(dinput);

 static ICOM_VTABLE(IDirectInputDevice8A) SysKeyboardAvt;

 typedef struct SysKeyboardAImpl SysKeyboardAImpl;
 struct SysKeyboardAImpl
 {
         LPVOID                          lpVtbl;
         DWORD                           ref;
         GUID                            guid;

 	IDirectInputAImpl *dinput;

 	HANDLE	hEvent;
         /* SysKeyboardAImpl */
 	int                             acquired;
         int                             buffersize;  /* set in 'SetProperty'         */
         LPDIDEVICEOBJECTDATA            buffer;      /* buffer for 'GetDeviceData'.
                                                         Alloc at 'Acquire', Free at
                                                         'Unacquire'                  */
         int                             count;       /* number of objects in use in
                                                         'buffer'                     */
         int                             start;       /* 'buffer' rotates. This is the
                                                         first in use (if count > 0)  */
         BOOL                            overflow;    /* return DI_BUFFEROVERFLOW in
                                                         'GetDeviceData'              */
         CRITICAL_SECTION                crit;
 };

 SysKeyboardAImpl *current; /* Today's acquired device
 FIXME: currently this can be only one.
 Maybe this should be a linked list or st.
 I don't know what the rules are for multiple acquired keyboards,
 but 'DI_LOSTFOCUS' and 'DI_UNACQUIRED' exist for a reason.
 */

 static BYTE DInputKeyState[256]; /* array for 'GetDeviceState' */

 HHOOK keyboard_hook;

 LRESULT CALLBACK KeyboardCallback( int code, WPARAM wparam, LPARAM lparam )
 {
   TRACE("(%d,%d,%ld)\n", code, wparam, lparam);

   if (code == HC_ACTION)
     {
       BYTE dik_code;
       BOOL down;
       DWORD timestamp;

       {
         KBDLLHOOKSTRUCT *hook = (KBDLLHOOKSTRUCT *)lparam;
         dik_code = hook->scanCode;
         if (hook->flags & LLKHF_EXTENDED) dik_code |= 0x80;
         down = !(hook->flags & LLKHF_UP);
         timestamp = hook->time;
       }

       DInputKeyState[dik_code] = (down ? 0x80 : 0);

       if (current != NULL)
         {
           if (current->hEvent)
             SetEvent(current->hEvent);

           if (current->buffer != NULL)
             {
               int n;

               EnterCriticalSection(&(current->crit));

               n = (current->start + current->count) % current->buffersize;

               current->buffer[n].dwOfs = dik_code;
               current->buffer[n].dwData = down ? 0x80 : 0;
               current->buffer[n].dwTimeStamp = timestamp;
               current->buffer[n].dwSequence = current->dinput->evsequence++;

 	      TRACE("Adding event at offset %d : %ld - %ld - %ld - %ld\n", n,
 		    current->buffer[n].dwOfs, current->buffer[n].dwData, current->buffer[n].dwTimeStamp, current->buffer[n].dwSequence);

               if (current->count == current->buffersize)
                 {
                   current->start++;
                   current->overflow = TRUE;
                 }
               else
                 current->count++;

               LeaveCriticalSection(&(current->crit));
             }
         }
     }

   return CallNextHookEx(keyboard_hook, code, wparam, lparam);
 }

 static GUID DInput_Wine_Keyboard_GUID = { /* 0ab8648a-7735-11d2-8c73-71df54a96441 */
   0x0ab8648a,
   0x7735,
   0x11d2,
   {0x8c, 0x73, 0x71, 0xdf, 0x54, 0xa9, 0x64, 0x41}
 };

 static BOOL keyboarddev_enum_device(DWORD dwDevType, DWORD dwFlags, LPDIDEVICEINSTANCEA lpddi)
 {
   if ((dwDevType == 0) || (dwDevType == DIDEVTYPE_KEYBOARD)) {
     TRACE("Enumerating the Keyboard device\n");

     lpddi->guidInstance = GUID_SysKeyboard;/* DInput's GUID */
     lpddi->guidProduct = DInput_Wine_Keyboard_GUID; /* Vendor's GUID */
     lpddi->dwDevType = DIDEVTYPE_KEYBOARD | (DIDEVTYPEKEYBOARD_UNKNOWN << 8);
     strcpy(lpddi->tszInstanceName, "Keyboard");
     strcpy(lpddi->tszProductName, "Wine Keyboard");

     return TRUE;
   }

   return FALSE;
 }

 static SysKeyboardAImpl *alloc_device(REFGUID rguid, LPVOID kvt, IDirectInputAImpl *dinput)
 {
     SysKeyboardAImpl* newDevice;
     newDevice = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(SysKeyboardAImpl));
     newDevice->lpVtbl = kvt;
     newDevice->ref = 1;
     memcpy(&(newDevice->guid),rguid,sizeof(*rguid));
     newDevice->dinput = dinput;

     return newDevice;
 }


 static HRESULT keyboarddev_create_device(IDirectInputAImpl *dinput, REFGUID rguid, REFIID riid, LPDIRECTINPUTDEVICEA* pdev)
 {
   if ((IsEqualGUID(&GUID_SysKeyboard,rguid)) ||          /* Generic Keyboard */
       (IsEqualGUID(&DInput_Wine_Keyboard_GUID,rguid))) { /* Wine Keyboard */
     if ((riid == NULL) ||
 	IsEqualGUID(&IID_IDirectInputDeviceA,riid) ||
 	IsEqualGUID(&IID_IDirectInputDevice2A,riid) ||
 	IsEqualGUID(&IID_IDirectInputDevice7A,riid) ||
 	IsEqualGUID(&IID_IDirectInputDevice8A,riid)) {
       *pdev=(IDirectInputDeviceA*) alloc_device(rguid, &SysKeyboardAvt, dinput);
       TRACE("Creating a Keyboard device (%p)\n", *pdev);
       return DI_OK;
     } else
       return DIERR_NOINTERFACE;
   }

   return DIERR_DEVICENOTREG;
 }

 static dinput_device keyboarddev = {
   100,
   keyboarddev_enum_device,
   keyboarddev_create_device
 };

 DECL_GLOBAL_CONSTRUCTOR(keyboarddev_register) { dinput_register_device(&keyboarddev); }

 static HRESULT WINAPI SysKeyboardAImpl_SetProperty(
 	LPDIRECTINPUTDEVICE8A iface,REFGUID rguid,LPCDIPROPHEADER ph
 )
 {
 	ICOM_THIS(SysKeyboardAImpl,iface);

 	TRACE("(this=%p,%s,%p)\n",This,debugstr_guid(rguid),ph);
 	TRACE("(size=%ld,headersize=%ld,obj=%ld,how=%ld\n",
             ph->dwSize,ph->dwHeaderSize,ph->dwObj,ph->dwHow);
 	if (!HIWORD(rguid)) {
 		switch ((DWORD)rguid) {
 		case (DWORD) DIPROP_BUFFERSIZE: {
 			LPCDIPROPDWORD	pd = (LPCDIPROPDWORD)ph;

 			TRACE("(buffersize=%ld)\n",pd->dwData);

                         if (This->acquired)
                            return DIERR_INVALIDPARAM;

                         This->buffersize = pd->dwData;

 			break;
 		}
 		default:
 			WARN("Unknown type %ld\n",(DWORD)rguid);
 			break;
 		}
 	}
 	return 0;
 }

 static HRESULT WINAPI SysKeyboardAImpl_GetDeviceState(
 	LPDIRECTINPUTDEVICE8A iface,DWORD len,LPVOID ptr
 )
 {
     /* Note: device does not need to be acquired */
     if (len != 256)
       return DIERR_INVALIDPARAM;

     memcpy(ptr, DInputKeyState, 256);
     return DI_OK;
 }

 static HRESULT WINAPI SysKeyboardAImpl_GetDeviceData(
 	LPDIRECTINPUTDEVICE8A iface,DWORD dodsize,LPDIDEVICEOBJECTDATA dod,
 	LPDWORD entries,DWORD flags
 )
 {
 	ICOM_THIS(SysKeyboardAImpl,iface);
 	int ret = DI_OK, i = 0;

 	TRACE("(this=%p,%ld,%p,%p(%ld)),0x%08lx)\n",
 	      This,dodsize,dod,entries,entries?*entries:0,flags);

 	if (This->acquired == 0)
 	  return DIERR_NOTACQUIRED;

         if (This->buffer == NULL)
           return DIERR_NOTBUFFERED;

         if (dodsize < sizeof(*dod))
           return DIERR_INVALIDPARAM;

         EnterCriticalSection(&(This->crit));

         /* Copy item at a time for the case dodsize > sizeof(buffer[n]) */
         while ((i < *entries || *entries == INFINITE) && i < This->count)
           {
             if (dod != NULL)
               {
                 int n = (This->start + i) % This->buffersize;
                 LPDIDEVICEOBJECTDATA pd
                    = (LPDIDEVICEOBJECTDATA)((BYTE *)dod + dodsize * i);
                 pd->dwOfs       = This->buffer[n].dwOfs;
                 pd->dwData      = This->buffer[n].dwData;
                 pd->dwTimeStamp = This->buffer[n].dwTimeStamp;
                 pd->dwSequence  = This->buffer[n].dwSequence;
               }
             i++;
           }

         *entries = i;

         if (This->overflow)
           ret = DI_BUFFEROVERFLOW;

         if (!(flags & DIGDD_PEEK))
           {
             /* Empty buffer */
             This->count -= i;
             This->start = (This->start + i) % This->buffersize;
             This->overflow = FALSE;
           }

         LeaveCriticalSection(&(This->crit));

 	TRACE("Returning %ld events queued\n", *entries);

         return ret;
 }

 static HRESULT WINAPI SysKeyboardAImpl_Unacquire(LPDIRECTINPUTDEVICE8A iface);

 static HRESULT WINAPI SysKeyboardAImpl_Acquire(LPDIRECTINPUTDEVICE8A iface)
 {
 	ICOM_THIS(SysKeyboardAImpl,iface);

 	TRACE("(this=%p)\n",This);

         if (This->acquired)
           return S_FALSE;

         This->acquired = 1;

         if (current != NULL)
           {
             FIXME("Not more than one keyboard can be acquired at the same time.\n");
             SysKeyboardAImpl_Unacquire(iface);
           }

         current = This;

         if (This->buffersize > 0)
           {
             This->buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                                      This->buffersize * sizeof(*(This->buffer)));
             This->start = 0;
             This->count = 0;
             This->overflow = FALSE;
             InitializeCriticalSection(&(This->crit));
           }
         else
           This->buffer = NULL;

 	return DI_OK;
 }

 static HRESULT WINAPI SysKeyboardAImpl_Unacquire(LPDIRECTINPUTDEVICE8A iface)
 {
 	ICOM_THIS(SysKeyboardAImpl,iface);
 	TRACE("(this=%p)\n",This);

         if (This->acquired == 0)
           return DI_NOEFFECT;

         if (current == This)
           current = NULL;
         else
           ERR("this != current\n");

         This->acquired = 0;

         if (This->buffersize >= 0)
           {
             HeapFree(GetProcessHeap(), 0, This->buffer);
             This->buffer = NULL;
             DeleteCriticalSection(&(This->crit));
           }

 	return DI_OK;
 }

 static HRESULT WINAPI SysKeyboardAImpl_SetEventNotification(LPDIRECTINPUTDEVICE8A iface,
 							    HANDLE hnd) {
   ICOM_THIS(SysKeyboardAImpl,iface);

   TRACE("(this=%p,0x%08lx)\n",This,(DWORD)hnd);

   This->hEvent = hnd;
   return DI_OK;
 }

 /******************************************************************************
   *     GetCapabilities : get the device capablitites
   */
 static HRESULT WINAPI SysKeyboardAImpl_GetCapabilities(
 	LPDIRECTINPUTDEVICE8A iface,
 	LPDIDEVCAPS lpDIDevCaps)
 {
   ICOM_THIS(SysKeyboardAImpl,iface);

   TRACE("(this=%p,%p)\n",This,lpDIDevCaps);

   if (lpDIDevCaps->dwSize == sizeof(DIDEVCAPS)) {
     lpDIDevCaps->dwFlags = DIDC_ATTACHED;
     lpDIDevCaps->dwDevType = DIDEVTYPE_KEYBOARD;
     lpDIDevCaps->dwAxes = 0;
     lpDIDevCaps->dwButtons = 0;
     lpDIDevCaps->dwPOVs = 0;
     lpDIDevCaps->dwFFSamplePeriod = 0;
     lpDIDevCaps->dwFFMinTimeResolution = 0;
     lpDIDevCaps->dwFirmwareRevision = 100;
     lpDIDevCaps->dwHardwareRevision = 100;
     lpDIDevCaps->dwFFDriverVersion = 0;
   } else {
     /* DirectX 3.0 */
     FIXME("DirectX 3.0 not supported....\n");
   }

   return DI_OK;
 }

 static ICOM_VTABLE(IDirectInputDevice8A) SysKeyboardAvt =
 {
 	ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 	IDirectInputDevice2AImpl_QueryInterface,
 	IDirectInputDevice2AImpl_AddRef,
 	IDirectInputDevice2AImpl_Release,
 	SysKeyboardAImpl_GetCapabilities,
 	IDirectInputDevice2AImpl_EnumObjects,
 	IDirectInputDevice2AImpl_GetProperty,
 	SysKeyboardAImpl_SetProperty,
 	SysKeyboardAImpl_Acquire,
 	SysKeyboardAImpl_Unacquire,
 	SysKeyboardAImpl_GetDeviceState,
 	SysKeyboardAImpl_GetDeviceData,
 	IDirectInputDevice2AImpl_SetDataFormat,
 	SysKeyboardAImpl_SetEventNotification,
 	IDirectInputDevice2AImpl_SetCooperativeLevel,
 	IDirectInputDevice2AImpl_GetObjectInfo,
 	IDirectInputDevice2AImpl_GetDeviceInfo,
 	IDirectInputDevice2AImpl_RunControlPanel,
 	IDirectInputDevice2AImpl_Initialize,
 	IDirectInputDevice2AImpl_CreateEffect,
 	IDirectInputDevice2AImpl_EnumEffects,
 	IDirectInputDevice2AImpl_GetEffectInfo,
 	IDirectInputDevice2AImpl_GetForceFeedbackState,
 	IDirectInputDevice2AImpl_SendForceFeedbackCommand,
 	IDirectInputDevice2AImpl_EnumCreatedEffectObjects,
 	IDirectInputDevice2AImpl_Escape,
 	IDirectInputDevice2AImpl_Poll,
         IDirectInputDevice2AImpl_SendDeviceData,
         IDirectInputDevice7AImpl_EnumEffectsInFile,
         IDirectInputDevice7AImpl_WriteEffectToFile,
         IDirectInputDevice8AImpl_BuildActionMap,
         IDirectInputDevice8AImpl_SetActionMap,
         IDirectInputDevice8AImpl_GetImageInfo
 };
	/* DirectInput Keyboard device
	*
	* Copyright 1998 Marcus Meissner
	* Copyright 1998,1999 Lionel Ulmer
	* Copyright 2000-2001 TransGaming Technologies Inc.
	*
	* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include "config.h"
	#include "wine/port.h"

	#include <string.h>
	#ifdef HAVE_SYS_ERRNO_H
	# include <sys/errno.h>
	#endif

	#include "winbase.h"
	#include "winuser.h"
	#include "winerror.h"
	#include "dinput.h"

	#include "dinput_private.h"
	#include "device_private.h"
	#include "wine/debug.h"

	WINE_DEFAULT_DEBUG_CHANNEL(dinput);

	static ICOM_VTABLE(IDirectInputDevice8A) SysKeyboardAvt;

	typedef struct SysKeyboardAImpl SysKeyboardAImpl;
	struct SysKeyboardAImpl
	{
	LPVOID lpVtbl;
	DWORD ref;
	GUID guid;

	IDirectInputAImpl *dinput;

	HANDLE hEvent;
	/* SysKeyboardAImpl */
	int acquired;
	int buffersize; /* set in 'SetProperty' */
	LPDIDEVICEOBJECTDATA buffer; /* buffer for 'GetDeviceData'.
	Alloc at 'Acquire', Free at
	'Unacquire' */
	int count; /* number of objects in use in
	'buffer' */
	int start; /* 'buffer' rotates. This is the
	first in use (if count > 0) */
	BOOL overflow; /* return DI_BUFFEROVERFLOW in
	'GetDeviceData' */
	CRITICAL_SECTION crit;
	};

	SysKeyboardAImpl current; / Today's acquired device
	FIXME: currently this can be only one.
	Maybe this should be a linked list or st.
	I don't know what the rules are for multiple acquired keyboards,
	but 'DI_LOSTFOCUS' and 'DI_UNACQUIRED' exist for a reason.
	*/

	static BYTE DInputKeyState[256]; /* array for 'GetDeviceState' */

	HHOOK keyboard_hook;

	LRESULT CALLBACK KeyboardCallback( int code, WPARAM wparam, LPARAM lparam )
	{
	TRACE("(%d,%d,%ld)\n", code, wparam, lparam);

	if (code == HC_ACTION)
	{
	BYTE dik_code;
	BOOL down;
	DWORD timestamp;

	{
	KBDLLHOOKSTRUCT hook = (KBDLLHOOKSTRUCT )lparam;
	dik_code = hook->scanCode;
	if (hook->flags & LLKHF_EXTENDED) dik_code \|= 0x80;
	down = !(hook->flags & LLKHF_UP);
	timestamp = hook->time;
	}

	DInputKeyState[dik_code] = (down ? 0x80 : 0);

	if (current != NULL)
	{
	if (current->hEvent)
	SetEvent(current->hEvent);

	if (current->buffer != NULL)
	{
	int n;

	EnterCriticalSection(&(current->crit));

	n = (current->start + current->count) % current->buffersize;

	current->buffer[n].dwOfs = dik_code;
	current->buffer[n].dwData = down ? 0x80 : 0;
	current->buffer[n].dwTimeStamp = timestamp;
	current->buffer[n].dwSequence = current->dinput->evsequence++;

	TRACE("Adding event at offset %d : %ld - %ld - %ld - %ld\n", n,
	current->buffer[n].dwOfs, current->buffer[n].dwData, current->buffer[n].dwTimeStamp, current->buffer[n].dwSequence);

	if (current->count == current->buffersize)
	{
	current->start++;
	current->overflow = TRUE;
	}
	else
	current->count++;

	LeaveCriticalSection(&(current->crit));
	}
	}
	}

	return CallNextHookEx(keyboard_hook, code, wparam, lparam);
	}

	static GUID DInput_Wine_Keyboard_GUID = { /* 0ab8648a-7735-11d2-8c73-71df54a96441 */
	0x0ab8648a,
	0x7735,
	0x11d2,
	{0x8c, 0x73, 0x71, 0xdf, 0x54, 0xa9, 0x64, 0x41}
	};

	static BOOL keyboarddev_enum_device(DWORD dwDevType, DWORD dwFlags, LPDIDEVICEINSTANCEA lpddi)
	{
	if ((dwDevType == 0) \|\| (dwDevType == DIDEVTYPE_KEYBOARD)) {
	TRACE("Enumerating the Keyboard device\n");

	lpddi->guidInstance = GUID_SysKeyboard;/* DInput's GUID */
	lpddi->guidProduct = DInput_Wine_Keyboard_GUID; /* Vendor's GUID */
	lpddi->dwDevType = DIDEVTYPE_KEYBOARD \| (DIDEVTYPEKEYBOARD_UNKNOWN << 8);
	strcpy(lpddi->tszInstanceName, "Keyboard");
	strcpy(lpddi->tszProductName, "Wine Keyboard");

	return TRUE;
	}

	return FALSE;
	}

	static SysKeyboardAImpl alloc_device(REFGUID rguid, LPVOID kvt, IDirectInputAImpl dinput)
	{
	SysKeyboardAImpl* newDevice;
	newDevice = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(SysKeyboardAImpl));
	newDevice->lpVtbl = kvt;
	newDevice->ref = 1;
	memcpy(&(newDevice->guid),rguid,sizeof(*rguid));
	newDevice->dinput = dinput;

	return newDevice;
	}


	static HRESULT keyboarddev_create_device(IDirectInputAImpl dinput, REFGUID rguid, REFIID riid, LPDIRECTINPUTDEVICEA pdev)
	{
	if ((IsEqualGUID(&GUID_SysKeyboard,rguid)) \|\| /* Generic Keyboard */
	(IsEqualGUID(&DInput_Wine_Keyboard_GUID,rguid))) { /* Wine Keyboard */
	if ((riid == NULL) \|\|
	IsEqualGUID(&IID_IDirectInputDeviceA,riid) \|\|
	IsEqualGUID(&IID_IDirectInputDevice2A,riid) \|\|
	IsEqualGUID(&IID_IDirectInputDevice7A,riid) \|\|
	IsEqualGUID(&IID_IDirectInputDevice8A,riid)) {
	pdev=(IDirectInputDeviceA) alloc_device(rguid, &SysKeyboardAvt, dinput);
	TRACE("Creating a Keyboard device (%p)\n", *pdev);
	return DI_OK;
	} else
	return DIERR_NOINTERFACE;
	}

	return DIERR_DEVICENOTREG;
	}

	static dinput_device keyboarddev = {
	100,
	keyboarddev_enum_device,
	keyboarddev_create_device
	};

	DECL_GLOBAL_CONSTRUCTOR(keyboarddev_register) { dinput_register_device(&keyboarddev); }

	static HRESULT WINAPI SysKeyboardAImpl_SetProperty(
	LPDIRECTINPUTDEVICE8A iface,REFGUID rguid,LPCDIPROPHEADER ph
	)
	{
	ICOM_THIS(SysKeyboardAImpl,iface);

	TRACE("(this=%p,%s,%p)\n",This,debugstr_guid(rguid),ph);
	TRACE("(size=%ld,headersize=%ld,obj=%ld,how=%ld\n",
	ph->dwSize,ph->dwHeaderSize,ph->dwObj,ph->dwHow);
	if (!HIWORD(rguid)) {
	switch ((DWORD)rguid) {
	case (DWORD) DIPROP_BUFFERSIZE: {
	LPCDIPROPDWORD pd = (LPCDIPROPDWORD)ph;

	TRACE("(buffersize=%ld)\n",pd->dwData);

	if (This->acquired)
	return DIERR_INVALIDPARAM;

	This->buffersize = pd->dwData;

	break;
	}
	default:
	WARN("Unknown type %ld\n",(DWORD)rguid);
	break;
	}
	}
	return 0;
	}

	static HRESULT WINAPI SysKeyboardAImpl_GetDeviceState(
	LPDIRECTINPUTDEVICE8A iface,DWORD len,LPVOID ptr
	)
	{
	/* Note: device does not need to be acquired */
	if (len != 256)
	return DIERR_INVALIDPARAM;

	memcpy(ptr, DInputKeyState, 256);
	return DI_OK;
	}

	static HRESULT WINAPI SysKeyboardAImpl_GetDeviceData(
	LPDIRECTINPUTDEVICE8A iface,DWORD dodsize,LPDIDEVICEOBJECTDATA dod,
	LPDWORD entries,DWORD flags
	)
	{
	ICOM_THIS(SysKeyboardAImpl,iface);
	int ret = DI_OK, i = 0;

	TRACE("(this=%p,%ld,%p,%p(%ld)),0x%08lx)\n",
	This,dodsize,dod,entries,entries?*entries:0,flags);

	if (This->acquired == 0)
	return DIERR_NOTACQUIRED;

	if (This->buffer == NULL)
	return DIERR_NOTBUFFERED;

	if (dodsize < sizeof(*dod))
	return DIERR_INVALIDPARAM;

	EnterCriticalSection(&(This->crit));

	/* Copy item at a time for the case dodsize > sizeof(buffer[n]) */
	while ((i < entries \|\| entries == INFINITE) && i < This->count)
	{
	if (dod != NULL)
	{
	int n = (This->start + i) % This->buffersize;
	LPDIDEVICEOBJECTDATA pd
	= (LPDIDEVICEOBJECTDATA)((BYTE )dod + dodsize i);
	pd->dwOfs = This->buffer[n].dwOfs;
	pd->dwData = This->buffer[n].dwData;
	pd->dwTimeStamp = This->buffer[n].dwTimeStamp;
	pd->dwSequence = This->buffer[n].dwSequence;
	}
	i++;
	}

	*entries = i;

	if (This->overflow)
	ret = DI_BUFFEROVERFLOW;

	if (!(flags & DIGDD_PEEK))
	{
	/* Empty buffer */
	This->count -= i;
	This->start = (This->start + i) % This->buffersize;
	This->overflow = FALSE;
	}

	LeaveCriticalSection(&(This->crit));

	TRACE("Returning %ld events queued\n", *entries);

	return ret;
	}

	static HRESULT WINAPI SysKeyboardAImpl_Unacquire(LPDIRECTINPUTDEVICE8A iface);

	static HRESULT WINAPI SysKeyboardAImpl_Acquire(LPDIRECTINPUTDEVICE8A iface)
	{
	ICOM_THIS(SysKeyboardAImpl,iface);

	TRACE("(this=%p)\n",This);

	if (This->acquired)
	return S_FALSE;

	This->acquired = 1;

	if (current != NULL)
	{
	FIXME("Not more than one keyboard can be acquired at the same time.\n");
	SysKeyboardAImpl_Unacquire(iface);
	}

	current = This;

	if (This->buffersize > 0)
	{
	This->buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
	This->buffersize * sizeof(*(This->buffer)));
	This->start = 0;
	This->count = 0;
	This->overflow = FALSE;
	InitializeCriticalSection(&(This->crit));
	}
	else
	This->buffer = NULL;

	return DI_OK;
	}

	static HRESULT WINAPI SysKeyboardAImpl_Unacquire(LPDIRECTINPUTDEVICE8A iface)
	{
	ICOM_THIS(SysKeyboardAImpl,iface);
	TRACE("(this=%p)\n",This);

	if (This->acquired == 0)
	return DI_NOEFFECT;

	if (current == This)
	current = NULL;
	else
	ERR("this != current\n");

	This->acquired = 0;

	if (This->buffersize >= 0)
	{
	HeapFree(GetProcessHeap(), 0, This->buffer);
	This->buffer = NULL;
	DeleteCriticalSection(&(This->crit));
	}

	return DI_OK;
	}

	static HRESULT WINAPI SysKeyboardAImpl_SetEventNotification(LPDIRECTINPUTDEVICE8A iface,
	HANDLE hnd) {
	ICOM_THIS(SysKeyboardAImpl,iface);

	TRACE("(this=%p,0x%08lx)\n",This,(DWORD)hnd);

	This->hEvent = hnd;
	return DI_OK;
	}

	/******************************************************************************
	* GetCapabilities : get the device capablitites
	*/
	static HRESULT WINAPI SysKeyboardAImpl_GetCapabilities(
	LPDIRECTINPUTDEVICE8A iface,
	LPDIDEVCAPS lpDIDevCaps)
	{
	ICOM_THIS(SysKeyboardAImpl,iface);

	TRACE("(this=%p,%p)\n",This,lpDIDevCaps);

	if (lpDIDevCaps->dwSize == sizeof(DIDEVCAPS)) {
	lpDIDevCaps->dwFlags = DIDC_ATTACHED;
	lpDIDevCaps->dwDevType = DIDEVTYPE_KEYBOARD;
	lpDIDevCaps->dwAxes = 0;
	lpDIDevCaps->dwButtons = 0;
	lpDIDevCaps->dwPOVs = 0;
	lpDIDevCaps->dwFFSamplePeriod = 0;
	lpDIDevCaps->dwFFMinTimeResolution = 0;
	lpDIDevCaps->dwFirmwareRevision = 100;
	lpDIDevCaps->dwHardwareRevision = 100;
	lpDIDevCaps->dwFFDriverVersion = 0;
	} else {
	/* DirectX 3.0 */
	FIXME("DirectX 3.0 not supported....\n");
	}

	return DI_OK;
	}

	static ICOM_VTABLE(IDirectInputDevice8A) SysKeyboardAvt =
	{
	ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
	IDirectInputDevice2AImpl_QueryInterface,
	IDirectInputDevice2AImpl_AddRef,
	IDirectInputDevice2AImpl_Release,
	SysKeyboardAImpl_GetCapabilities,
	IDirectInputDevice2AImpl_EnumObjects,
	IDirectInputDevice2AImpl_GetProperty,
	SysKeyboardAImpl_SetProperty,
	SysKeyboardAImpl_Acquire,
	SysKeyboardAImpl_Unacquire,
	SysKeyboardAImpl_GetDeviceState,
	SysKeyboardAImpl_GetDeviceData,
	IDirectInputDevice2AImpl_SetDataFormat,
	SysKeyboardAImpl_SetEventNotification,
	IDirectInputDevice2AImpl_SetCooperativeLevel,
	IDirectInputDevice2AImpl_GetObjectInfo,
	IDirectInputDevice2AImpl_GetDeviceInfo,
	IDirectInputDevice2AImpl_RunControlPanel,
	IDirectInputDevice2AImpl_Initialize,
	IDirectInputDevice2AImpl_CreateEffect,
	IDirectInputDevice2AImpl_EnumEffects,
	IDirectInputDevice2AImpl_GetEffectInfo,
	IDirectInputDevice2AImpl_GetForceFeedbackState,
	IDirectInputDevice2AImpl_SendForceFeedbackCommand,
	IDirectInputDevice2AImpl_EnumCreatedEffectObjects,
	IDirectInputDevice2AImpl_Escape,
	IDirectInputDevice2AImpl_Poll,
	IDirectInputDevice2AImpl_SendDeviceData,
	IDirectInputDevice7AImpl_EnumEffectsInFile,
	IDirectInputDevice7AImpl_WriteEffectToFile,
	IDirectInputDevice8AImpl_BuildActionMap,
	IDirectInputDevice8AImpl_SetActionMap,
	IDirectInputDevice8AImpl_GetImageInfo
	};