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wine/dlls/winmm/joystick.c
Zebediah Figura 8c985449c3 winmm: Reimplement joystick axis mapping. 
This should more closely match the algorithm used by native, discovered through
extensive manual testing.

This does not include any automated tests, both because I could not get winmm to
recognize a second plugged joystick, and (as I eventually discovered while
testing) the number of tests that would be necessary to conclusively prove this
algorithm turned out to be impractical.
2023-11-30 10:08:09 +01:00

697 lines
22 KiB
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/*
* joystick functions
*
* Copyright 1997 Andreas Mohr
* Copyright 2000 Wolfgang Schwotzer
* Copyright 2000 Eric Pouech
* Copyright 2020 Zebediah Figura for CodeWeavers
* Copyright 2021 Rémi Bernon 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>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "windef.h"
#include "winbase.h"
#include "mmsystem.h"
#include "hidusage.h"
#include "initguid.h"
#include "dinput.h"
#include "winemm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(winmm);
static CRITICAL_SECTION joystick_cs;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &joystick_cs,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": joystick_cs") }
};
static CRITICAL_SECTION joystick_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
enum axis
{
AXIS_X,
AXIS_Y,
AXIS_Z,
AXIS_R,
AXIS_U,
AXIS_V,
AXIS_COUNT,
};
#define BUTTON_COUNT 32
struct joystick_state
{
LONG axes[AXIS_COUNT];
LONG pov;
BYTE buttons[BUTTON_COUNT];
};
#define JOY_PERIOD_MIN (10) /* min Capture time period */
#define JOY_PERIOD_MAX (1000) /* max Capture time period */
struct joystick
{
DIDEVICEINSTANCEW instance;
IDirectInputDevice8W *device;
struct joystick_state state;
HANDLE event;
JOYINFO info;
HWND capture;
UINT timer;
DWORD threshold;
BOOL changed;
};
static DIDEVICEINSTANCEW instances[16];
static struct joystick joysticks[16];
static IDirectInput8W *dinput;
static BOOL CALLBACK enum_instances( const DIDEVICEINSTANCEW *instance, void *context )
{
ULONG index = *(ULONG *)context;
BYTE type = instance->dwDevType;
if (type == DI8DEVTYPE_MOUSE) return DIENUM_CONTINUE;
if (type == DI8DEVTYPE_KEYBOARD) return DIENUM_CONTINUE;
instances[index++] = *instance;
if (index >= ARRAY_SIZE(instances)) return DIENUM_STOP;
*(ULONG *)context = index;
return DIENUM_CONTINUE;
}
static BOOL WINAPI joystick_load_once( INIT_ONCE *once, void *param, void **context )
{
HRESULT hr = DirectInput8Create( hWinMM32Instance, DIRECTINPUT_VERSION, &IID_IDirectInput8W,
(void **)&dinput, NULL );
if (FAILED(hr)) ERR( "Could not create dinput instance, hr %#lx\n", hr );
return TRUE;
}
void joystick_unload(void)
{
int i;
if (!dinput) return;
for (i = 0; i < ARRAY_SIZE(joysticks); i++)
{
if (!joysticks[i].device) continue;
IDirectInputDevice8_Release( joysticks[i].device );
CloseHandle( joysticks[i].event );
}
IDirectInput8_Release( dinput );
}
static int is_already_mapped( const DIOBJECTDATAFORMAT *object_formats, DWORD count, DWORD instance_number )
{
DWORD i;
for (i = 0; i < count; ++i)
{
if (object_formats[i].dwType == instance_number)
return 1;
}
return 0;
}
struct usage_enum_params
{
WORD usage;
int found;
DWORD instance_number;
};
static BOOL CALLBACK usage_enum_cb( const DIDEVICEOBJECTINSTANCEW *instance, void *ctx )
{
struct usage_enum_params *params = ctx;
if (!(instance->dwFlags & DIDOI_ASPECTPOSITION))
return DIENUM_CONTINUE;
if (instance->wUsagePage != HID_USAGE_PAGE_GENERIC)
return DIENUM_CONTINUE;
if ((params->usage == instance->wUsage)
|| (params->usage == HID_USAGE_GENERIC_Z && instance->wUsage == HID_USAGE_GENERIC_WHEEL))
{
params->instance_number = instance->dwType;
params->found = 1;
return DIENUM_STOP;
}
return DIENUM_CONTINUE;
}
static HRESULT set_data_format( IDirectInputDevice8W *device )
{
DIOBJECTDATAFORMAT object_formats[AXIS_COUNT + 1 + BUTTON_COUNT] = {{0}}; /* +1 for hat switch */
DIOBJECTDATAFORMAT *object_format;
DIDATAFORMAT data_format = {0};
unsigned int i, j;
static const struct
{
WORD usages[5];
}
usage_mappings[AXIS_COUNT] =
{
[AXIS_X] = {{HID_USAGE_GENERIC_X, HID_USAGE_GENERIC_RY}},
[AXIS_Y] = {{HID_USAGE_GENERIC_Y, HID_USAGE_GENERIC_RX}},
[AXIS_Z] = {{HID_USAGE_GENERIC_Z, HID_USAGE_GENERIC_SLIDER, HID_USAGE_GENERIC_DIAL}},
[AXIS_R] = {{HID_USAGE_GENERIC_RZ, HID_USAGE_GENERIC_SLIDER, HID_USAGE_GENERIC_DIAL, HID_USAGE_GENERIC_RY, HID_USAGE_GENERIC_RX}},
[AXIS_U] = {{HID_USAGE_GENERIC_SLIDER, HID_USAGE_GENERIC_DIAL, HID_USAGE_GENERIC_RY, HID_USAGE_GENERIC_RX}},
[AXIS_V] = {{HID_USAGE_GENERIC_RX}},
};
data_format.dwSize = sizeof(DIDATAFORMAT);
data_format.dwObjSize = sizeof(DIOBJECTDATAFORMAT);
data_format.dwFlags = DIDF_ABSAXIS;
data_format.dwDataSize = sizeof(struct joystick_state);
data_format.rgodf = object_formats;
for (i = 0; i < ARRAY_SIZE(usage_mappings); ++i)
{
for (j = 0; j < ARRAY_SIZE(usage_mappings[i].usages) && usage_mappings[i].usages[j]; ++j)
{
struct usage_enum_params params = {.usage = usage_mappings[i].usages[j]};
/* We can almost use GetObjectInfo() here, except that winmm
* treats Z and wheel identically. */
if (FAILED(IDirectInputDevice8_EnumObjects( device, usage_enum_cb, &params, DIDFT_AXIS )))
continue;
if (!params.found)
continue;
if (is_already_mapped( object_formats, data_format.dwNumObjs, params.instance_number ))
continue;
object_format = &object_formats[data_format.dwNumObjs++];
object_format->dwOfs = offsetof(struct joystick_state, axes[i]);
object_format->dwType = params.instance_number;
break;
}
}
object_format = &object_formats[data_format.dwNumObjs++];
object_format->pguid = &GUID_POV;
object_format->dwOfs = offsetof(struct joystick_state, pov);
object_format->dwType = DIDFT_OPTIONAL | DIDFT_POV | DIDFT_ANYINSTANCE;
for (i = 0; i < BUTTON_COUNT; ++i)
{
object_format = &object_formats[data_format.dwNumObjs++];
object_format->dwOfs = offsetof(struct joystick_state, buttons[i]);
object_format->dwType = DIDFT_OPTIONAL | DIDFT_BUTTON | DIDFT_ANYINSTANCE;
}
return IDirectInputDevice8_SetDataFormat( device, &data_format );
}
static void find_joysticks(void)
{
static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
IDirectInputDevice8W *device;
HANDLE event;
DWORD index;
HRESULT hr;
InitOnceExecuteOnce( &init_once, joystick_load_once, NULL, NULL );
if (!dinput) return;
index = 0;
IDirectInput8_EnumDevices( dinput, DI8DEVCLASS_ALL, enum_instances, &index, DIEDFL_ATTACHEDONLY );
TRACE( "found %lu device instances\n", index );
while (index--)
{
if (!memcmp( &joysticks[index].instance, &instances[index], sizeof(DIDEVICEINSTANCEW) ))
continue;
if (joysticks[index].device)
{
IDirectInputDevice8_Release( joysticks[index].device );
CloseHandle( joysticks[index].event );
}
if (!(event = CreateEventW( NULL, FALSE, FALSE, NULL )))
WARN( "could not event for device, error %lu\n", GetLastError() );
else if (FAILED(hr = IDirectInput8_CreateDevice( dinput, &instances[index].guidInstance, &device, NULL )))
WARN( "could not create device %s instance, hr %#lx\n",
debugstr_guid( &instances[index].guidInstance ), hr );
else if (FAILED(hr = IDirectInputDevice8_SetEventNotification( device, event )))
WARN( "SetEventNotification device %p hr %#lx\n", device, hr );
else if (FAILED(hr = IDirectInputDevice8_SetCooperativeLevel( device, NULL, DISCL_NONEXCLUSIVE|DISCL_BACKGROUND )))
WARN( "SetCooperativeLevel device %p hr %#lx\n", device, hr );
else if (FAILED(hr = set_data_format( device )))
WARN( "SetDataFormat device %p hr %#lx\n", device, hr );
else if (FAILED(hr = IDirectInputDevice8_Acquire( device )))
WARN( "Acquire device %p hr %#lx\n", device, hr );
else
{
TRACE( "opened device %p event %p\n", device, event );
memset( &joysticks[index], 0, sizeof(struct joystick) );
joysticks[index].instance = instances[index];
joysticks[index].device = device;
joysticks[index].event = event;
continue;
}
CloseHandle( event );
if (device) IDirectInputDevice8_Release( device );
memmove( joysticks + index, joysticks + index + 1,
(ARRAY_SIZE(joysticks) - index - 1) * sizeof(struct joystick) );
memset( &joysticks[ARRAY_SIZE(joysticks) - 1], 0, sizeof(struct joystick) );
}
}
static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
{
unsigned int diff = x > y ? x - y : y - x;
return diff <= max_diff;
}
static void CALLBACK joystick_timer( HWND hwnd, UINT msg, UINT_PTR timer, DWORD time )
{
MMRESULT res;
JOYINFO info;
WORD change;
LONG pos;
int i;
EnterCriticalSection( &joystick_cs );
for (i = 0; i < ARRAY_SIZE(joysticks); i++)
{
if (joysticks[i].capture != hwnd) continue;
if ((res = joyGetPos( i, &info )))
{
WARN( "joyGetPos failed: %08x\n", res );
continue;
}
pos = MAKELONG( info.wXpos, info.wYpos );
if (!joysticks[i].changed ||
!compare_uint( joysticks[i].info.wXpos, info.wXpos, joysticks[i].threshold ) ||
!compare_uint( joysticks[i].info.wYpos, info.wYpos, joysticks[i].threshold ))
{
SendMessageA( hwnd, MM_JOY1MOVE + i, info.wButtons, pos );
joysticks[i].info.wXpos = info.wXpos;
joysticks[i].info.wYpos = info.wYpos;
}
if (!joysticks[i].changed ||
!compare_uint( joysticks[i].info.wZpos, info.wZpos, joysticks[i].threshold ))
{
SendMessageA( hwnd, MM_JOY1ZMOVE + i, info.wButtons, pos );
joysticks[i].info.wZpos = info.wZpos;
}
if ((change = joysticks[i].info.wButtons ^ info.wButtons) != 0)
{
if (info.wButtons & change)
SendMessageA( hwnd, MM_JOY1BUTTONDOWN + i, (change << 8) | (info.wButtons & change), pos );
if (joysticks[i].info.wButtons & change)
SendMessageA( hwnd, MM_JOY1BUTTONUP + i, (change << 8) | (joysticks[i].info.wButtons & change), pos );
joysticks[i].info.wButtons = info.wButtons;
}
}
LeaveCriticalSection( &joystick_cs );
}
/**************************************************************************
* joyConfigChanged [WINMM.@]
*/
MMRESULT WINAPI joyConfigChanged(DWORD flags)
{
FIXME( "flags %#lx stub!\n", flags );
if (flags) return JOYERR_PARMS;
return JOYERR_NOERROR;
}
/**************************************************************************
* joyGetNumDevs [WINMM.@]
*/
UINT WINAPI DECLSPEC_HOTPATCH joyGetNumDevs(void)
{
return ARRAY_SIZE(joysticks);
}
/**************************************************************************
* joyGetDevCapsW [WINMM.@]
*/
MMRESULT WINAPI DECLSPEC_HOTPATCH joyGetDevCapsW( UINT_PTR id, JOYCAPSW *caps, UINT size )
{
static ULONG last_check;
DIDEVICEOBJECTINSTANCEW instance = {.dwSize = sizeof(DIDEVICEOBJECTINSTANCEW)};
DIDEVCAPS dicaps = {.dwSize = sizeof(DIDEVCAPS)};
DIPROPDWORD diprop =
{
.diph =
{
.dwSize = sizeof(DIPROPDWORD),
.dwHeaderSize = sizeof(DIPROPHEADER),
.dwHow = DIPH_DEVICE,
},
};
MMRESULT res = JOYERR_NOERROR;
IDirectInputDevice8W *device;
ULONG ticks = GetTickCount();
HRESULT hr;
TRACE( "id %d, caps %p, size %u.\n", (int)id, caps, size );
if (!caps) return MMSYSERR_INVALPARAM;
if (size != sizeof(JOYCAPSW) && size != sizeof(JOYCAPS2W)) return JOYERR_PARMS;
memset( caps, 0, size );
wcscpy( caps->szRegKey, L"DINPUT.DLL" );
if (id == ~(UINT_PTR)0) return JOYERR_NOERROR;
if (id >= ARRAY_SIZE(joysticks)) return JOYERR_PARMS;
EnterCriticalSection( &joystick_cs );
if (!(device = joysticks[id].device) && (ticks - last_check) >= 2000)
{
last_check = ticks;
find_joysticks();
}
if (!(device = joysticks[id].device)) res = JOYERR_PARMS;
else if (FAILED(hr = IDirectInputDevice8_GetCapabilities( device, &dicaps )))
{
WARN( "GetCapabilities device %p returned %#lx\n", device, hr );
res = JOYERR_PARMS;
}
else
{
hr = IDirectInputDevice8_GetProperty( device, DIPROP_VIDPID, &diprop.diph );
if (FAILED(hr)) WARN( "GetProperty device %p returned %#lx\n", device, hr );
else
{
caps->wMid = LOWORD(diprop.dwData);
caps->wPid = HIWORD(diprop.dwData);
}
wcscpy( caps->szPname, L"Wine joystick driver" );
caps->wXmin = 0;
caps->wXmax = 0xffff;
caps->wYmin = 0;
caps->wYmax = 0xffff;
caps->wZmin = 0;
caps->wZmax = 0xffff;
caps->wNumButtons = dicaps.dwButtons;
caps->wPeriodMin = JOY_PERIOD_MIN;
caps->wPeriodMax = JOY_PERIOD_MAX;
caps->wRmin = 0;
caps->wRmax = 0xffff;
caps->wUmin = 0;
caps->wUmax = 0xffff;
caps->wVmin = 0;
caps->wVmax = 0xffff;
caps->wCaps = 0;
caps->wMaxAxes = AXIS_COUNT;
caps->wNumAxes = min( dicaps.dwAxes, caps->wMaxAxes );
caps->wMaxButtons = BUTTON_COUNT;
hr = IDirectInputDevice8_GetObjectInfo( device, &instance, offsetof(struct joystick_state, axes[AXIS_Z]), DIPH_BYOFFSET );
if (SUCCEEDED(hr)) caps->wCaps |= JOYCAPS_HASZ;
hr = IDirectInputDevice8_GetObjectInfo( device, &instance, offsetof(struct joystick_state, axes[AXIS_R]), DIPH_BYOFFSET );
if (SUCCEEDED(hr)) caps->wCaps |= JOYCAPS_HASR;
hr = IDirectInputDevice8_GetObjectInfo( device, &instance, offsetof(struct joystick_state, axes[AXIS_U]), DIPH_BYOFFSET );
if (SUCCEEDED(hr)) caps->wCaps |= JOYCAPS_HASU;
hr = IDirectInputDevice8_GetObjectInfo( device, &instance, offsetof(struct joystick_state, axes[AXIS_V]), DIPH_BYOFFSET );
if (SUCCEEDED(hr)) caps->wCaps |= JOYCAPS_HASV;
hr = IDirectInputDevice8_GetObjectInfo( device, &instance, offsetof(struct joystick_state, pov), DIPH_BYOFFSET );
if (SUCCEEDED(hr)) caps->wCaps |= JOYCAPS_HASPOV|JOYCAPS_POV4DIR;
}
LeaveCriticalSection( &joystick_cs );
return res;
}
/**************************************************************************
* joyGetDevCapsA [WINMM.@]
*/
MMRESULT WINAPI DECLSPEC_HOTPATCH joyGetDevCapsA( UINT_PTR id, JOYCAPSA *caps, UINT size )
{
UINT size_w = sizeof(JOYCAPS2W);
JOYCAPS2W caps_w;
MMRESULT res;
TRACE( "id %d, caps %p, size %u.\n", (int)id, caps, size );
if (!caps) return MMSYSERR_INVALPARAM;
if (size != sizeof(JOYCAPSA) && size != sizeof(JOYCAPS2A)) return JOYERR_PARMS;
if (size == sizeof(JOYCAPSA)) size_w = sizeof(JOYCAPSW);
res = joyGetDevCapsW( id, (JOYCAPSW *)&caps_w, size_w );
if (res) return res;
caps->wMid = caps_w.wMid;
caps->wPid = caps_w.wPid;
WideCharToMultiByte( CP_ACP, 0, caps_w.szPname, -1, caps->szPname,
sizeof(caps->szPname), NULL, NULL );
caps->wXmin = caps_w.wXmin;
caps->wXmax = caps_w.wXmax;
caps->wYmin = caps_w.wYmin;
caps->wYmax = caps_w.wYmax;
caps->wZmin = caps_w.wZmin;
caps->wZmax = caps_w.wZmax;
caps->wNumButtons = caps_w.wNumButtons;
caps->wPeriodMin = caps_w.wPeriodMin;
caps->wPeriodMax = caps_w.wPeriodMax;
caps->wRmin = caps_w.wRmin;
caps->wRmax = caps_w.wRmax;
caps->wUmin = caps_w.wUmin;
caps->wUmax = caps_w.wUmax;
caps->wVmin = caps_w.wVmin;
caps->wVmax = caps_w.wVmax;
caps->wCaps = caps_w.wCaps;
caps->wMaxAxes = caps_w.wMaxAxes;
caps->wNumAxes = caps_w.wNumAxes;
caps->wMaxButtons = caps_w.wMaxButtons;
WideCharToMultiByte( CP_ACP, 0, caps_w.szRegKey, -1, caps->szRegKey,
sizeof(caps->szRegKey), NULL, NULL );
WideCharToMultiByte( CP_ACP, 0, caps_w.szOEMVxD, -1, caps->szOEMVxD,
sizeof(caps->szOEMVxD), NULL, NULL );
if (size == sizeof(JOYCAPS2A))
{
JOYCAPS2A *caps2_a = (JOYCAPS2A *)caps;
caps2_a->ManufacturerGuid = caps_w.ManufacturerGuid;
caps2_a->ProductGuid = caps_w.ProductGuid;
caps2_a->NameGuid = caps_w.NameGuid;
}
return JOYERR_NOERROR;
}
/**************************************************************************
* joyGetPosEx [WINMM.@]
*/
MMRESULT WINAPI DECLSPEC_HOTPATCH joyGetPosEx( UINT id, JOYINFOEX *info )
{
static ULONG last_check;
DWORD i, ticks = GetTickCount();
MMRESULT res = JOYERR_NOERROR;
IDirectInputDevice8W *device;
struct joystick_state state;
HRESULT hr;
TRACE( "id %u, info %p.\n", id, info );
if (!info) return MMSYSERR_INVALPARAM;
if (id >= ARRAY_SIZE(joysticks) || info->dwSize < sizeof(JOYINFOEX)) return JOYERR_PARMS;
EnterCriticalSection( &joystick_cs );
if (!(device = joysticks[id].device) && (ticks - last_check) >= 2000)
{
last_check = ticks;
find_joysticks();
}
if (!(device = joysticks[id].device))
res = JOYERR_PARMS;
else if (FAILED(hr = IDirectInputDevice8_GetDeviceState( device, sizeof(struct joystick_state), &state )))
{
WARN( "GetDeviceState device %p returned %#lx\n", device, hr );
res = JOYERR_PARMS;
}
else
{
if (info->dwFlags & JOY_RETURNX) info->dwXpos = state.axes[AXIS_X];
if (info->dwFlags & JOY_RETURNY) info->dwYpos = state.axes[AXIS_Y];
if (info->dwFlags & JOY_RETURNZ) info->dwZpos = state.axes[AXIS_Z];
if (info->dwFlags & JOY_RETURNR) info->dwRpos = state.axes[AXIS_R];
if (info->dwFlags & JOY_RETURNU) info->dwUpos = state.axes[AXIS_U];
if (info->dwFlags & JOY_RETURNV) info->dwVpos = state.axes[AXIS_V];
if (info->dwFlags & JOY_RETURNPOV)
{
if (state.pov == ~0) info->dwPOV = 0xffff;
else info->dwPOV = state.pov;
}
if (info->dwFlags & JOY_RETURNBUTTONS)
{
info->dwButtonNumber = info->dwButtons = 0;
for (i = 0; i < ARRAY_SIZE(state.buttons); ++i)
{
if (!state.buttons[i]) continue;
info->dwButtonNumber++;
info->dwButtons |= 1 << i;
}
}
}
LeaveCriticalSection( &joystick_cs );
return res;
}
/**************************************************************************
* joyGetPos [WINMM.@]
*/
MMRESULT WINAPI joyGetPos( UINT id, JOYINFO *info )
{
JOYINFOEX infoex =
{
.dwSize = sizeof(JOYINFOEX),
.dwFlags = JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ | JOY_RETURNBUTTONS,
};
MMRESULT res;
TRACE( "id %u, info %p.\n", id, info );
if (!info) return MMSYSERR_INVALPARAM;
if ((res = joyGetPosEx( id, &infoex ))) return res;
info->wXpos = infoex.dwXpos;
info->wYpos = infoex.dwYpos;
info->wZpos = infoex.dwZpos;
info->wButtons = infoex.dwButtons;
return JOYERR_NOERROR;
}
/**************************************************************************
* joyGetThreshold [WINMM.@]
*/
MMRESULT WINAPI joyGetThreshold( UINT id, UINT *threshold )
{
TRACE( "id %u, threshold %p.\n", id, threshold );
if (id >= ARRAY_SIZE(joysticks)) return JOYERR_PARMS;
EnterCriticalSection( &joystick_cs );
*threshold = joysticks[id].threshold;
LeaveCriticalSection( &joystick_cs );
return JOYERR_NOERROR;
}
/**************************************************************************
* joyReleaseCapture [WINMM.@]
*/
MMRESULT WINAPI joyReleaseCapture( UINT id )
{
TRACE( "id %u.\n", id );
if (id >= ARRAY_SIZE(joysticks)) return JOYERR_PARMS;
EnterCriticalSection( &joystick_cs );
if (!joysticks[id].capture)
TRACE("Joystick is not captured, ignoring request.\n");
else
{
KillTimer( joysticks[id].capture, joysticks[id].timer );
joysticks[id].capture = 0;
joysticks[id].timer = 0;
}
LeaveCriticalSection( &joystick_cs );
return JOYERR_NOERROR;
}
/**************************************************************************
* joySetCapture [WINMM.@]
*/
MMRESULT WINAPI joySetCapture( HWND hwnd, UINT id, UINT period, BOOL changed )
{
MMRESULT res = JOYERR_NOERROR;
TRACE( "hwnd %p, id %u, period %u, changed %u.\n", hwnd, id, period, changed );
if (id >= ARRAY_SIZE(joysticks) || hwnd == 0) return JOYERR_PARMS;
if (period < JOY_PERIOD_MIN) period = JOY_PERIOD_MIN;
else if (period > JOY_PERIOD_MAX) period = JOY_PERIOD_MAX;
EnterCriticalSection( &joystick_cs );
if (joysticks[id].capture || !IsWindow( hwnd ))
res = JOYERR_NOCANDO; /* FIXME: what should be returned ? */
else if (joyGetPos( id, &joysticks[id].info ) != JOYERR_NOERROR)
res = JOYERR_UNPLUGGED;
else if ((joysticks[id].timer = SetTimer( hwnd, 0, period, joystick_timer )) == 0)
res = JOYERR_NOCANDO;
else
{
joysticks[id].capture = hwnd;
joysticks[id].changed = changed;
}
LeaveCriticalSection( &joystick_cs );
return res;
}
/**************************************************************************
* joySetThreshold [WINMM.@]
*/
MMRESULT WINAPI joySetThreshold( UINT id, UINT threshold )
{
TRACE( "id %u, threshold %u.\n", id, threshold );
if (id >= ARRAY_SIZE(joysticks) || threshold > 65535) return MMSYSERR_INVALPARAM;
EnterCriticalSection( &joystick_cs );
joysticks[id].threshold = threshold;
LeaveCriticalSection( &joystick_cs );
return JOYERR_NOERROR;
}
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