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/*
* Raw Input
*
* Copyright 2012 Henri Verbeet
* Copyright 2018 Zebediah Figura for CodeWeavers
*
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winnls.h"
#include "winreg.h"
#include "winuser.h"
#include "setupapi.h"
#include "ddk/hidsdi.h"
#include "wine/debug.h"
#include "wine/server.h"
#include "wine/hid.h"
#include "user_private.h"
#include "initguid.h"
#include "devpkey.h"
#include "ntddmou.h"
#include "ntddkbd.h"
WINE_DEFAULT_DEBUG_CHANNEL(rawinput);
DEFINE_DEVPROPKEY(DEVPROPKEY_HID_HANDLE, 0xbc62e415, 0xf4fe, 0x405c, 0x8e, 0xda, 0x63, 0x6f, 0xb5, 0x9f, 0x08, 0x98, 2);
struct device
{
SP_DEVICE_INTERFACE_DETAIL_DATA_W *detail;
HANDLE file;
HANDLE handle;
RID_DEVICE_INFO info;
PHIDP_PREPARSED_DATA data;
};
static struct device *rawinput_devices;
static unsigned int rawinput_devices_count, rawinput_devices_max;
static CRITICAL_SECTION rawinput_devices_cs;
static CRITICAL_SECTION_DEBUG rawinput_devices_cs_debug =
{
0, 0, &rawinput_devices_cs,
{ &rawinput_devices_cs_debug.ProcessLocksList, &rawinput_devices_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": rawinput_devices_cs") }
};
static CRITICAL_SECTION rawinput_devices_cs = { &rawinput_devices_cs_debug, -1, 0, 0, 0, 0 };
static BOOL array_reserve(void **elements, unsigned int *capacity, unsigned int count, unsigned int size)
{
unsigned int new_capacity, max_capacity;
void *new_elements;
if (count <= *capacity)
return TRUE;
max_capacity = ~(SIZE_T)0 / size;
if (count > max_capacity)
return FALSE;
new_capacity = max(4, *capacity);
while (new_capacity < count && new_capacity <= max_capacity / 2)
new_capacity *= 2;
if (new_capacity < count)
new_capacity = max_capacity;
if (!(new_elements = realloc(*elements, new_capacity * size)))
return FALSE;
*elements = new_elements;
*capacity = new_capacity;
return TRUE;
}
static struct device *add_device(HDEVINFO set, SP_DEVICE_INTERFACE_DATA *iface)
{
SP_DEVINFO_DATA device_data = {sizeof(device_data)};
SP_DEVICE_INTERFACE_DETAIL_DATA_W *detail;
struct device *device = NULL;
UINT32 handle;
HANDLE file;
DWORD i, size, type;
SetupDiGetDeviceInterfaceDetailW(set, iface, NULL, 0, &size, &device_data);
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
{
ERR("Failed to get device path, error %#x.\n", GetLastError());
return FALSE;
}
if (!SetupDiGetDevicePropertyW(set, &device_data, &DEVPROPKEY_HID_HANDLE, &type, (BYTE *)&handle, sizeof(handle), NULL, 0) ||
type != DEVPROP_TYPE_UINT32)
{
ERR("Failed to get device handle, error %#x.\n", GetLastError());
return NULL;
}
if (!(detail = malloc(size)))
{
ERR("Failed to allocate memory.\n");
return FALSE;
}
detail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_W);
SetupDiGetDeviceInterfaceDetailW(set, iface, detail, size, NULL, NULL);
file = CreateFileW(detail->DevicePath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0);
if (file == INVALID_HANDLE_VALUE)
{
ERR("Failed to open device file %s, error %u.\n", debugstr_w(detail->DevicePath), GetLastError());
free(detail);
return NULL;
}
for (i = 0; i < rawinput_devices_count && !device; ++i)
if (rawinput_devices[i].handle == UlongToHandle(handle))
device = rawinput_devices + i;
if (device)
{
TRACE("Updating device %x / %s.\n", handle, debugstr_w(detail->DevicePath));
HidD_FreePreparsedData(device->data);
CloseHandle(device->file);
free(device->detail);
}
else if (array_reserve((void **)&rawinput_devices, &rawinput_devices_max,
rawinput_devices_count + 1, sizeof(*rawinput_devices)))
{
device = &rawinput_devices[rawinput_devices_count++];
TRACE("Adding device %x / %s.\n", handle, debugstr_w(detail->DevicePath));
}
else
{
ERR("Failed to allocate memory.\n");
CloseHandle(file);
free(detail);
return NULL;
}
device->detail = detail;
device->file = file;
device->handle = ULongToHandle(handle);
device->info.cbSize = sizeof(RID_DEVICE_INFO);
device->data = NULL;
return device;
}
static void find_devices(void)
{
SP_DEVICE_INTERFACE_DATA iface = { sizeof(iface) };
struct device *device;
HIDD_ATTRIBUTES attr;
HIDP_CAPS caps;
GUID hid_guid;
HDEVINFO set;
DWORD idx;
HidD_GetHidGuid(&hid_guid);
EnterCriticalSection(&rawinput_devices_cs);
/* destroy previous list */
for (idx = 0; idx < rawinput_devices_count; ++idx)
{
HidD_FreePreparsedData(rawinput_devices[idx].data);
CloseHandle(rawinput_devices[idx].file);
free(rawinput_devices[idx].detail);
}
rawinput_devices_count = 0;
set = SetupDiGetClassDevsW(&hid_guid, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
for (idx = 0; SetupDiEnumDeviceInterfaces(set, NULL, &hid_guid, idx, &iface); ++idx)
{
if (!(device = add_device(set, &iface)))
continue;
attr.Size = sizeof(HIDD_ATTRIBUTES);
if (!HidD_GetAttributes(device->file, &attr))
WARN("Failed to get attributes.\n");
device->info.dwType = RIM_TYPEHID;
device->info.u.hid.dwVendorId = attr.VendorID;
device->info.u.hid.dwProductId = attr.ProductID;
device->info.u.hid.dwVersionNumber = attr.VersionNumber;
if (!HidD_GetPreparsedData(device->file, &device->data))
WARN("Failed to get preparsed data.\n");
if (!HidP_GetCaps(device->data, &caps))
WARN("Failed to get caps.\n");
device->info.u.hid.usUsagePage = caps.UsagePage;
device->info.u.hid.usUsage = caps.Usage;
}
SetupDiDestroyDeviceInfoList(set);
set = SetupDiGetClassDevsW(&GUID_DEVINTERFACE_MOUSE, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
for (idx = 0; SetupDiEnumDeviceInterfaces(set, NULL, &GUID_DEVINTERFACE_MOUSE, idx, &iface); ++idx)
{
static const RID_DEVICE_INFO_MOUSE mouse_info = {1, 5, 0, FALSE};
if (!(device = add_device(set, &iface)))
continue;
device->info.dwType = RIM_TYPEMOUSE;
device->info.u.mouse = mouse_info;
}
SetupDiDestroyDeviceInfoList(set);
set = SetupDiGetClassDevsW(&GUID_DEVINTERFACE_KEYBOARD, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
for (idx = 0; SetupDiEnumDeviceInterfaces(set, NULL, &GUID_DEVINTERFACE_KEYBOARD, idx, &iface); ++idx)
{
static const RID_DEVICE_INFO_KEYBOARD keyboard_info = {0, 0, 1, 12, 3, 101};
if (!(device = add_device(set, &iface)))
continue;
device->info.dwType = RIM_TYPEKEYBOARD;
device->info.u.keyboard = keyboard_info;
}
SetupDiDestroyDeviceInfoList(set);
LeaveCriticalSection(&rawinput_devices_cs);
}
static struct device *find_device_from_handle(HANDLE handle)
{
UINT i;
for (i = 0; i < rawinput_devices_count; ++i)
if (rawinput_devices[i].handle == handle)
return rawinput_devices + i;
find_devices();
for (i = 0; i < rawinput_devices_count; ++i)
if (rawinput_devices[i].handle == handle)
return rawinput_devices + i;
return NULL;
}
struct rawinput_thread_data *rawinput_thread_data(void)
{
struct user_thread_info *thread_info = get_user_thread_info();
struct rawinput_thread_data *data = thread_info->rawinput;
if (data) return data;
data = thread_info->rawinput = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
RAWINPUT_BUFFER_SIZE + sizeof(struct user_thread_info) );
return data;
}
BOOL rawinput_from_hardware_message(RAWINPUT *rawinput, const struct hardware_msg_data *msg_data)
{
rawinput->header.dwType = msg_data->rawinput.type;
if (msg_data->rawinput.type == RIM_TYPEMOUSE)
{
static const unsigned int button_flags[] =
{
0, /* MOUSEEVENTF_MOVE */
RI_MOUSE_LEFT_BUTTON_DOWN, /* MOUSEEVENTF_LEFTDOWN */
RI_MOUSE_LEFT_BUTTON_UP, /* MOUSEEVENTF_LEFTUP */
RI_MOUSE_RIGHT_BUTTON_DOWN, /* MOUSEEVENTF_RIGHTDOWN */
RI_MOUSE_RIGHT_BUTTON_UP, /* MOUSEEVENTF_RIGHTUP */
RI_MOUSE_MIDDLE_BUTTON_DOWN, /* MOUSEEVENTF_MIDDLEDOWN */
RI_MOUSE_MIDDLE_BUTTON_UP, /* MOUSEEVENTF_MIDDLEUP */
};
unsigned int i;
rawinput->header.dwSize = FIELD_OFFSET(RAWINPUT, data) + sizeof(RAWMOUSE);
rawinput->header.hDevice = WINE_MOUSE_HANDLE;
rawinput->header.wParam = 0;
rawinput->data.mouse.usFlags = MOUSE_MOVE_RELATIVE;
rawinput->data.mouse.u.s.usButtonFlags = 0;
rawinput->data.mouse.u.s.usButtonData = 0;
for (i = 1; i < ARRAY_SIZE(button_flags); ++i)
{
if (msg_data->flags & (1 << i))
rawinput->data.mouse.u.s.usButtonFlags |= button_flags[i];
}
if (msg_data->flags & MOUSEEVENTF_WHEEL)
{
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_WHEEL;
rawinput->data.mouse.u.s.usButtonData = msg_data->rawinput.mouse.data;
}
if (msg_data->flags & MOUSEEVENTF_HWHEEL)
{
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_HORIZONTAL_WHEEL;
rawinput->data.mouse.u.s.usButtonData = msg_data->rawinput.mouse.data;
}
if (msg_data->flags & MOUSEEVENTF_XDOWN)
{
if (msg_data->rawinput.mouse.data == XBUTTON1)
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_BUTTON_4_DOWN;
else if (msg_data->rawinput.mouse.data == XBUTTON2)
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_BUTTON_5_DOWN;
}
if (msg_data->flags & MOUSEEVENTF_XUP)
{
if (msg_data->rawinput.mouse.data == XBUTTON1)
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_BUTTON_4_UP;
else if (msg_data->rawinput.mouse.data == XBUTTON2)
rawinput->data.mouse.u.s.usButtonFlags |= RI_MOUSE_BUTTON_5_UP;
}
rawinput->data.mouse.ulRawButtons = 0;
rawinput->data.mouse.lLastX = msg_data->rawinput.mouse.x;
rawinput->data.mouse.lLastY = msg_data->rawinput.mouse.y;
rawinput->data.mouse.ulExtraInformation = msg_data->info;
}
else if (msg_data->rawinput.type == RIM_TYPEKEYBOARD)
{
rawinput->header.dwSize = FIELD_OFFSET(RAWINPUT, data) + sizeof(RAWKEYBOARD);
rawinput->header.hDevice = WINE_KEYBOARD_HANDLE;
rawinput->header.wParam = 0;
rawinput->data.keyboard.MakeCode = msg_data->rawinput.kbd.scan;
rawinput->data.keyboard.Flags = msg_data->flags & KEYEVENTF_KEYUP ? RI_KEY_BREAK : RI_KEY_MAKE;
if (msg_data->flags & KEYEVENTF_EXTENDEDKEY) rawinput->data.keyboard.Flags |= RI_KEY_E0;
rawinput->data.keyboard.Reserved = 0;
switch (msg_data->rawinput.kbd.vkey)
{
case VK_LSHIFT:
case VK_RSHIFT:
rawinput->data.keyboard.VKey = VK_SHIFT;
rawinput->data.keyboard.Flags &= ~RI_KEY_E0;
break;
case VK_LCONTROL:
case VK_RCONTROL:
rawinput->data.keyboard.VKey = VK_CONTROL;
break;
case VK_LMENU:
case VK_RMENU:
rawinput->data.keyboard.VKey = VK_MENU;
break;
default:
rawinput->data.keyboard.VKey = msg_data->rawinput.kbd.vkey;
break;
}
rawinput->data.keyboard.Message = msg_data->rawinput.kbd.message;
rawinput->data.keyboard.ExtraInformation = msg_data->info;
}
else
{
FIXME("Unhandled rawinput type %#x.\n", msg_data->rawinput.type);
return FALSE;
}
return TRUE;
}
/***********************************************************************
* GetRawInputDeviceList (USER32.@)
*/
UINT WINAPI GetRawInputDeviceList(RAWINPUTDEVICELIST *devices, UINT *device_count, UINT size)
{
UINT i;
TRACE("devices %p, device_count %p, size %u.\n", devices, device_count, size);
if (size != sizeof(*devices))
{
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
if (!device_count)
{
SetLastError(ERROR_NOACCESS);
return ~0U;
}
find_devices();
if (!devices)
{
*device_count = rawinput_devices_count;
return 0;
}
if (*device_count < rawinput_devices_count)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
*device_count = rawinput_devices_count;
return ~0U;
}
for (i = 0; i < rawinput_devices_count; ++i)
{
devices[i].hDevice = rawinput_devices[i].handle;
devices[i].dwType = rawinput_devices[i].info.dwType;
}
return rawinput_devices_count;
}
/***********************************************************************
* RegisterRawInputDevices (USER32.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH RegisterRawInputDevices(RAWINPUTDEVICE *devices, UINT device_count, UINT size)
{
struct rawinput_device *d;
BOOL ret;
UINT i;
TRACE("devices %p, device_count %u, size %u.\n", devices, device_count, size);
if (size != sizeof(*devices))
{
WARN("Invalid structure size %u.\n", size);
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
for (i = 0; i < device_count; ++i)
{
if ((devices[i].dwFlags & RIDEV_INPUTSINK) &&
(devices[i].hwndTarget == NULL))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if ((devices[i].dwFlags & RIDEV_REMOVE) &&
(devices[i].hwndTarget != NULL))
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
}
if (!(d = HeapAlloc( GetProcessHeap(), 0, device_count * sizeof(*d) ))) return FALSE;
for (i = 0; i < device_count; ++i)
{
TRACE("device %u: page %#x, usage %#x, flags %#x, target %p.\n",
i, devices[i].usUsagePage, devices[i].usUsage,
devices[i].dwFlags, devices[i].hwndTarget);
if (devices[i].dwFlags & ~(RIDEV_REMOVE|RIDEV_NOLEGACY|RIDEV_INPUTSINK|RIDEV_DEVNOTIFY))
FIXME("Unhandled flags %#x for device %u.\n", devices[i].dwFlags, i);
d[i].usage_page = devices[i].usUsagePage;
d[i].usage = devices[i].usUsage;
d[i].flags = devices[i].dwFlags;
d[i].target = wine_server_user_handle( devices[i].hwndTarget );
}
SERVER_START_REQ( update_rawinput_devices )
{
wine_server_add_data( req, d, device_count * sizeof(*d) );
ret = !wine_server_call( req );
}
SERVER_END_REQ;
HeapFree( GetProcessHeap(), 0, d );
return ret;
}
/***********************************************************************
* GetRawInputData (USER32.@)
*/
UINT WINAPI GetRawInputData(HRAWINPUT rawinput, UINT command, void *data, UINT *data_size, UINT header_size)
{
struct rawinput_thread_data *thread_data = rawinput_thread_data();
UINT size;
TRACE("rawinput %p, command %#x, data %p, data_size %p, header_size %u.\n",
rawinput, command, data, data_size, header_size);
if (!rawinput || thread_data->hw_id != (UINT_PTR)rawinput)
{
SetLastError(ERROR_INVALID_HANDLE);
return ~0U;
}
if (header_size != sizeof(RAWINPUTHEADER))
{
WARN("Invalid structure size %u.\n", header_size);
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
switch (command)
{
case RID_INPUT:
size = thread_data->buffer->header.dwSize;
break;
case RID_HEADER:
size = sizeof(RAWINPUTHEADER);
break;
default:
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
if (!data)
{
*data_size = size;
return 0;
}
if (*data_size < size)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return ~0U;
}
memcpy(data, thread_data->buffer, size);
return size;
}
#ifdef _WIN64
typedef RAWINPUT RAWINPUT64;
#else
typedef struct
{
RAWINPUTHEADER header;
char pad[8];
union {
RAWMOUSE mouse;
RAWKEYBOARD keyboard;
RAWHID hid;
} data;
} RAWINPUT64;
#endif
/***********************************************************************
* GetRawInputBuffer (USER32.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH GetRawInputBuffer(RAWINPUT *data, UINT *data_size, UINT header_size)
{
struct hardware_msg_data *msg_data;
struct rawinput_thread_data *thread_data;
RAWINPUT *rawinput;
UINT count = 0, rawinput_size, next_size, overhead;
BOOL is_wow64;
int i;
if (IsWow64Process( GetCurrentProcess(), &is_wow64 ) && is_wow64)
rawinput_size = sizeof(RAWINPUT64);
else
rawinput_size = sizeof(RAWINPUT);
overhead = rawinput_size - sizeof(RAWINPUT);
if (header_size != sizeof(RAWINPUTHEADER))
{
WARN("Invalid structure size %u.\n", header_size);
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
if (!data_size)
{
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
if (!data)
{
TRACE("data %p, data_size %p (%u), header_size %u\n", data, data_size, *data_size, header_size);
SERVER_START_REQ( get_rawinput_buffer )
{
req->rawinput_size = rawinput_size;
req->buffer_size = 0;
if (wine_server_call( req )) return ~0U;
*data_size = reply->next_size;
}
SERVER_END_REQ;
return 0;
}
if (!(thread_data = rawinput_thread_data())) return ~0U;
rawinput = thread_data->buffer;
/* first RAWINPUT block in the buffer is used for WM_INPUT message data */
msg_data = (struct hardware_msg_data *)NEXTRAWINPUTBLOCK(rawinput);
SERVER_START_REQ( get_rawinput_buffer )
{
req->rawinput_size = rawinput_size;
req->buffer_size = *data_size;
wine_server_set_reply( req, msg_data, RAWINPUT_BUFFER_SIZE - rawinput->header.dwSize );
if (wine_server_call( req )) return ~0U;
next_size = reply->next_size;
count = reply->count;
}
SERVER_END_REQ;
for (i = 0; i < count; ++i)
{
rawinput_from_hardware_message(data, msg_data);
if (overhead) memmove((char *)&data->data + overhead, &data->data,
data->header.dwSize - sizeof(RAWINPUTHEADER));
data->header.dwSize += overhead;
data = NEXTRAWINPUTBLOCK(data);
msg_data++;
}
if (count == 0 && next_size == 0) *data_size = 0;
else if (next_size == 0) next_size = rawinput_size;
if (next_size && *data_size <= next_size)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
*data_size = next_size;
count = ~0U;
}
if (count) TRACE("data %p, data_size %p (%u), header_size %u, count %u\n", data, data_size, *data_size, header_size, count);
return count;
}
/***********************************************************************
* GetRawInputDeviceInfoA (USER32.@)
*/
UINT WINAPI GetRawInputDeviceInfoA(HANDLE device, UINT command, void *data, UINT *data_size)
{
TRACE("device %p, command %#x, data %p, data_size %p.\n",
device, command, data, data_size);
/* RIDI_DEVICENAME data_size is in chars, not bytes */
if (command == RIDI_DEVICENAME)
{
WCHAR *nameW;
UINT ret, nameW_sz;
if (!data_size) return ~0U;
nameW_sz = *data_size;
if (data && nameW_sz > 0)
nameW = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * nameW_sz);
else
nameW = NULL;
ret = GetRawInputDeviceInfoW(device, command, nameW, &nameW_sz);
if (ret && ret != ~0U)
WideCharToMultiByte(CP_ACP, 0, nameW, -1, data, *data_size, NULL, NULL);
*data_size = nameW_sz;
HeapFree(GetProcessHeap(), 0, nameW);
return ret;
}
return GetRawInputDeviceInfoW(device, command, data, data_size);
}
/***********************************************************************
* GetRawInputDeviceInfoW (USER32.@)
*/
UINT WINAPI GetRawInputDeviceInfoW(HANDLE handle, UINT command, void *data, UINT *data_size)
{
RID_DEVICE_INFO info;
struct device *device;
DWORD len, data_len;
TRACE("handle %p, command %#x, data %p, data_size %p.\n",
handle, command, data, data_size);
if (!data_size)
{
SetLastError(ERROR_NOACCESS);
return ~0U;
}
if (!(device = find_device_from_handle(handle)))
{
SetLastError(ERROR_INVALID_HANDLE);
return ~0U;
}
data_len = *data_size;
switch (command)
{
case RIDI_DEVICENAME:
if ((len = wcslen(device->detail->DevicePath) + 1) <= data_len && data)
memcpy(data, device->detail->DevicePath, len * sizeof(WCHAR));
*data_size = len;
break;
case RIDI_DEVICEINFO:
if ((len = sizeof(info)) <= data_len && data)
memcpy(data, &device->info, len);
*data_size = len;
break;
case RIDI_PREPARSEDDATA:
len = device->data ? ((WINE_HIDP_PREPARSED_DATA*)device->data)->dwSize : 0;
if (device->data && len <= data_len && data)
memcpy(data, device->data, len);
*data_size = len;
break;
default:
FIXME("command %#x not supported\n", command);
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
if (!data)
return 0;
if (data_len < len)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return ~0U;
}
return *data_size;
}
static int __cdecl compare_raw_input_devices(const void *ap, const void *bp)
{
const RAWINPUTDEVICE a = *(const RAWINPUTDEVICE *)ap;
const RAWINPUTDEVICE b = *(const RAWINPUTDEVICE *)bp;
if (a.usUsagePage != b.usUsagePage) return a.usUsagePage - b.usUsagePage;
if (a.usUsage != b.usUsage) return a.usUsage - b.usUsage;
return 0;
}
/***********************************************************************
* GetRegisteredRawInputDevices (USER32.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH GetRegisteredRawInputDevices(RAWINPUTDEVICE *devices, UINT *device_count, UINT size)
{
struct rawinput_device *buffer = NULL;
unsigned int i, status, count = ~0U, buffer_size;
TRACE("devices %p, device_count %p, size %u\n", devices, device_count, size);
if (size != sizeof(RAWINPUTDEVICE) || !device_count || (devices && !*device_count))
{
SetLastError(ERROR_INVALID_PARAMETER);
return ~0U;
}
buffer_size = *device_count * sizeof(*buffer);
if (devices && !(buffer = HeapAlloc(GetProcessHeap(), 0, buffer_size)))
return ~0U;
SERVER_START_REQ(get_rawinput_devices)
{
if (buffer) wine_server_set_reply(req, buffer, buffer_size);
status = wine_server_call_err(req);
*device_count = reply->device_count;
}
SERVER_END_REQ;
if (buffer && !status)
{
for (i = 0, count = *device_count; i < count; ++i)
{
devices[i].usUsagePage = buffer[i].usage_page;
devices[i].usUsage = buffer[i].usage;
devices[i].dwFlags = buffer[i].flags;
devices[i].hwndTarget = wine_server_ptr_handle(buffer[i].target);
}
qsort(devices, count, sizeof(*devices), compare_raw_input_devices);
}
if (buffer) HeapFree(GetProcessHeap(), 0, buffer);
else count = 0;
return count;
}
/***********************************************************************
* DefRawInputProc (USER32.@)
*/
LRESULT WINAPI DefRawInputProc(RAWINPUT **data, INT data_count, UINT header_size)
{
FIXME("data %p, data_count %d, header_size %u stub!\n", data, data_count, header_size);
return 0;
}
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