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glfw/src/win32_joystick.c
Camilla Löwy 6d51b39106 Select mapping platform name at runtime 
This is done in preparation for runtime platform selection.
2021-10-12 12:54:35 +02:00

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//========================================================================
// GLFW 3.4 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
// Please use C89 style variable declarations in this file because VS 2010
//========================================================================
#include "internal.h"
#include <stdio.h>
#include <math.h>
#define _GLFW_TYPE_AXIS 0
#define _GLFW_TYPE_SLIDER 1
#define _GLFW_TYPE_BUTTON 2
#define _GLFW_TYPE_POV 3
// Data produced with DirectInput device object enumeration
//
typedef struct _GLFWobjenumWin32
{
IDirectInputDevice8W* device;
_GLFWjoyobjectWin32* objects;
int objectCount;
int axisCount;
int sliderCount;
int buttonCount;
int povCount;
} _GLFWobjenumWin32;
// Define local copies of the necessary GUIDs
//
static const GUID _glfw_IID_IDirectInput8W =
{0xbf798031,0x483a,0x4da2,{0xaa,0x99,0x5d,0x64,0xed,0x36,0x97,0x00}};
static const GUID _glfw_GUID_XAxis =
{0xa36d02e0,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_YAxis =
{0xa36d02e1,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_ZAxis =
{0xa36d02e2,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_RxAxis =
{0xa36d02f4,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_RyAxis =
{0xa36d02f5,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_RzAxis =
{0xa36d02e3,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_Slider =
{0xa36d02e4,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
static const GUID _glfw_GUID_POV =
{0xa36d02f2,0xc9f3,0x11cf,{0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00}};
#define IID_IDirectInput8W _glfw_IID_IDirectInput8W
#define GUID_XAxis _glfw_GUID_XAxis
#define GUID_YAxis _glfw_GUID_YAxis
#define GUID_ZAxis _glfw_GUID_ZAxis
#define GUID_RxAxis _glfw_GUID_RxAxis
#define GUID_RyAxis _glfw_GUID_RyAxis
#define GUID_RzAxis _glfw_GUID_RzAxis
#define GUID_Slider _glfw_GUID_Slider
#define GUID_POV _glfw_GUID_POV
// Object data array for our clone of c_dfDIJoystick
// Generated with https://github.com/elmindreda/c_dfDIJoystick2
//
static DIOBJECTDATAFORMAT _glfwObjectDataFormats[] =
{
{ &GUID_XAxis,DIJOFS_X,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_YAxis,DIJOFS_Y,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_ZAxis,DIJOFS_Z,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_RxAxis,DIJOFS_RX,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_RyAxis,DIJOFS_RY,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_RzAxis,DIJOFS_RZ,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_Slider,DIJOFS_SLIDER(0),DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_Slider,DIJOFS_SLIDER(1),DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
{ &GUID_POV,DIJOFS_POV(0),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ &GUID_POV,DIJOFS_POV(1),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ &GUID_POV,DIJOFS_POV(2),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ &GUID_POV,DIJOFS_POV(3),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(0),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(1),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(2),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(3),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(4),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(5),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(6),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(7),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(8),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(9),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(10),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(11),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(12),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(13),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(14),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(15),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(16),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(17),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(18),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(19),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(20),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(21),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(22),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(23),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(24),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(25),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(26),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(27),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(28),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(29),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(30),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
{ NULL,DIJOFS_BUTTON(31),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
};
// Our clone of c_dfDIJoystick
//
static const DIDATAFORMAT _glfwDataFormat =
{
sizeof(DIDATAFORMAT),
sizeof(DIOBJECTDATAFORMAT),
DIDFT_ABSAXIS,
sizeof(DIJOYSTATE),
sizeof(_glfwObjectDataFormats) / sizeof(DIOBJECTDATAFORMAT),
_glfwObjectDataFormats
};
// Returns a description fitting the specified XInput capabilities
//
static const char* getDeviceDescription(const XINPUT_CAPABILITIES* xic)
{
switch (xic->SubType)
{
case XINPUT_DEVSUBTYPE_WHEEL:
return "XInput Wheel";
case XINPUT_DEVSUBTYPE_ARCADE_STICK:
return "XInput Arcade Stick";
case XINPUT_DEVSUBTYPE_FLIGHT_STICK:
return "XInput Flight Stick";
case XINPUT_DEVSUBTYPE_DANCE_PAD:
return "XInput Dance Pad";
case XINPUT_DEVSUBTYPE_GUITAR:
return "XInput Guitar";
case XINPUT_DEVSUBTYPE_DRUM_KIT:
return "XInput Drum Kit";
case XINPUT_DEVSUBTYPE_GAMEPAD:
{
if (xic->Flags & XINPUT_CAPS_WIRELESS)
return "Wireless Xbox Controller";
else
return "Xbox Controller";
}
}
return "Unknown XInput Device";
}
// Lexically compare device objects
//
static int compareJoystickObjects(const void* first, const void* second)
{
const _GLFWjoyobjectWin32* fo = first;
const _GLFWjoyobjectWin32* so = second;
if (fo->type != so->type)
return fo->type - so->type;
return fo->offset - so->offset;
}
// Checks whether the specified device supports XInput
// Technique from FDInputJoystickManager::IsXInputDeviceFast in ZDoom
//
static GLFWbool supportsXInput(const GUID* guid)
{
UINT i, count = 0;
RAWINPUTDEVICELIST* ridl;
GLFWbool result = GLFW_FALSE;
if (GetRawInputDeviceList(NULL, &count, sizeof(RAWINPUTDEVICELIST)) != 0)
return GLFW_FALSE;
ridl = _glfw_calloc(count, sizeof(RAWINPUTDEVICELIST));
if (GetRawInputDeviceList(ridl, &count, sizeof(RAWINPUTDEVICELIST)) == (UINT) -1)
{
_glfw_free(ridl);
return GLFW_FALSE;
}
for (i = 0; i < count; i++)
{
RID_DEVICE_INFO rdi;
char name[256];
UINT size;
if (ridl[i].dwType != RIM_TYPEHID)
continue;
ZeroMemory(&rdi, sizeof(rdi));
rdi.cbSize = sizeof(rdi);
size = sizeof(rdi);
if ((INT) GetRawInputDeviceInfoA(ridl[i].hDevice,
RIDI_DEVICEINFO,
&rdi, &size) == -1)
{
continue;
}
if (MAKELONG(rdi.hid.dwVendorId, rdi.hid.dwProductId) != (LONG) guid->Data1)
continue;
memset(name, 0, sizeof(name));
size = sizeof(name);
if ((INT) GetRawInputDeviceInfoA(ridl[i].hDevice,
RIDI_DEVICENAME,
name, &size) == -1)
{
break;
}
name[sizeof(name) - 1] = '\0';
if (strstr(name, "IG_"))
{
result = GLFW_TRUE;
break;
}
}
_glfw_free(ridl);
return result;
}
// Frees all resources associated with the specified joystick
//
static void closeJoystick(_GLFWjoystick* js)
{
if (js->win32.device)
{
IDirectInputDevice8_Unacquire(js->win32.device);
IDirectInputDevice8_Release(js->win32.device);
}
_glfw_free(js->win32.objects);
_glfwFreeJoystick(js);
_glfwInputJoystick(js, GLFW_DISCONNECTED);
}
// DirectInput device object enumeration callback
// Insights gleaned from SDL
//
static BOOL CALLBACK deviceObjectCallback(const DIDEVICEOBJECTINSTANCEW* doi,
void* user)
{
_GLFWobjenumWin32* data = user;
_GLFWjoyobjectWin32* object = data->objects + data->objectCount;
if (DIDFT_GETTYPE(doi->dwType) & DIDFT_AXIS)
{
DIPROPRANGE dipr;
if (memcmp(&doi->guidType, &GUID_Slider, sizeof(GUID)) == 0)
object->offset = DIJOFS_SLIDER(data->sliderCount);
else if (memcmp(&doi->guidType, &GUID_XAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_X;
else if (memcmp(&doi->guidType, &GUID_YAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_Y;
else if (memcmp(&doi->guidType, &GUID_ZAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_Z;
else if (memcmp(&doi->guidType, &GUID_RxAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_RX;
else if (memcmp(&doi->guidType, &GUID_RyAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_RY;
else if (memcmp(&doi->guidType, &GUID_RzAxis, sizeof(GUID)) == 0)
object->offset = DIJOFS_RZ;
else
return DIENUM_CONTINUE;
ZeroMemory(&dipr, sizeof(dipr));
dipr.diph.dwSize = sizeof(dipr);
dipr.diph.dwHeaderSize = sizeof(dipr.diph);
dipr.diph.dwObj = doi->dwType;
dipr.diph.dwHow = DIPH_BYID;
dipr.lMin = -32768;
dipr.lMax = 32767;
if (FAILED(IDirectInputDevice8_SetProperty(data->device,
DIPROP_RANGE,
&dipr.diph)))
{
return DIENUM_CONTINUE;
}
if (memcmp(&doi->guidType, &GUID_Slider, sizeof(GUID)) == 0)
{
object->type = _GLFW_TYPE_SLIDER;
data->sliderCount++;
}
else
{
object->type = _GLFW_TYPE_AXIS;
data->axisCount++;
}
}
else if (DIDFT_GETTYPE(doi->dwType) & DIDFT_BUTTON)
{
object->offset = DIJOFS_BUTTON(data->buttonCount);
object->type = _GLFW_TYPE_BUTTON;
data->buttonCount++;
}
else if (DIDFT_GETTYPE(doi->dwType) & DIDFT_POV)
{
object->offset = DIJOFS_POV(data->povCount);
object->type = _GLFW_TYPE_POV;
data->povCount++;
}
data->objectCount++;
return DIENUM_CONTINUE;
}
// DirectInput device enumeration callback
//
static BOOL CALLBACK deviceCallback(const DIDEVICEINSTANCE* di, void* user)
{
int jid = 0;
DIDEVCAPS dc;
DIPROPDWORD dipd;
IDirectInputDevice8* device;
_GLFWobjenumWin32 data;
_GLFWjoystick* js;
char guid[33];
char name[256];
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
js = _glfw.joysticks + jid;
if (js->present)
{
if (memcmp(&js->win32.guid, &di->guidInstance, sizeof(GUID)) == 0)
return DIENUM_CONTINUE;
}
}
if (supportsXInput(&di->guidProduct))
return DIENUM_CONTINUE;
if (FAILED(IDirectInput8_CreateDevice(_glfw.win32.dinput8.api,
&di->guidInstance,
&device,
NULL)))
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to create device");
return DIENUM_CONTINUE;
}
if (FAILED(IDirectInputDevice8_SetDataFormat(device, &_glfwDataFormat)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to set device data format");
IDirectInputDevice8_Release(device);
return DIENUM_CONTINUE;
}
ZeroMemory(&dc, sizeof(dc));
dc.dwSize = sizeof(dc);
if (FAILED(IDirectInputDevice8_GetCapabilities(device, &dc)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to query device capabilities");
IDirectInputDevice8_Release(device);
return DIENUM_CONTINUE;
}
ZeroMemory(&dipd, sizeof(dipd));
dipd.diph.dwSize = sizeof(dipd);
dipd.diph.dwHeaderSize = sizeof(dipd.diph);
dipd.diph.dwHow = DIPH_DEVICE;
dipd.dwData = DIPROPAXISMODE_ABS;
if (FAILED(IDirectInputDevice8_SetProperty(device,
DIPROP_AXISMODE,
&dipd.diph)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to set device axis mode");
IDirectInputDevice8_Release(device);
return DIENUM_CONTINUE;
}
memset(&data, 0, sizeof(data));
data.device = device;
data.objects = _glfw_calloc(dc.dwAxes + (size_t) dc.dwButtons + dc.dwPOVs,
sizeof(_GLFWjoyobjectWin32));
if (FAILED(IDirectInputDevice8_EnumObjects(device,
deviceObjectCallback,
&data,
DIDFT_AXIS | DIDFT_BUTTON | DIDFT_POV)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to enumerate device objects");
IDirectInputDevice8_Release(device);
_glfw_free(data.objects);
return DIENUM_CONTINUE;
}
qsort(data.objects, data.objectCount,
sizeof(_GLFWjoyobjectWin32),
compareJoystickObjects);
if (!WideCharToMultiByte(CP_UTF8, 0,
di->tszInstanceName, -1,
name, sizeof(name),
NULL, NULL))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert joystick name to UTF-8");
IDirectInputDevice8_Release(device);
_glfw_free(data.objects);
return DIENUM_STOP;
}
// Generate a joystick GUID that matches the SDL 2.0.5+ one
if (memcmp(&di->guidProduct.Data4[2], "PIDVID", 6) == 0)
{
sprintf(guid, "03000000%02x%02x0000%02x%02x000000000000",
(uint8_t) di->guidProduct.Data1,
(uint8_t) (di->guidProduct.Data1 >> 8),
(uint8_t) (di->guidProduct.Data1 >> 16),
(uint8_t) (di->guidProduct.Data1 >> 24));
}
else
{
sprintf(guid, "05000000%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x00",
name[0], name[1], name[2], name[3],
name[4], name[5], name[6], name[7],
name[8], name[9], name[10]);
}
js = _glfwAllocJoystick(name, guid,
data.axisCount + data.sliderCount,
data.buttonCount,
data.povCount);
if (!js)
{
IDirectInputDevice8_Release(device);
_glfw_free(data.objects);
return DIENUM_STOP;
}
js->win32.device = device;
js->win32.guid = di->guidInstance;
js->win32.objects = data.objects;
js->win32.objectCount = data.objectCount;
_glfwInputJoystick(js, GLFW_CONNECTED);
return DIENUM_CONTINUE;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Checks for new joysticks after DBT_DEVICEARRIVAL
//
void _glfwDetectJoystickConnectionWin32(void)
{
if (_glfw.win32.xinput.instance)
{
DWORD index;
for (index = 0; index < XUSER_MAX_COUNT; index++)
{
int jid;
char guid[33];
XINPUT_CAPABILITIES xic;
_GLFWjoystick* js;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
if (_glfw.joysticks[jid].present &&
_glfw.joysticks[jid].win32.device == NULL &&
_glfw.joysticks[jid].win32.index == index)
{
break;
}
}
if (jid <= GLFW_JOYSTICK_LAST)
continue;
if (XInputGetCapabilities(index, 0, &xic) != ERROR_SUCCESS)
continue;
// Generate a joystick GUID that matches the SDL 2.0.5+ one
sprintf(guid, "78696e707574%02x000000000000000000",
xic.SubType & 0xff);
js = _glfwAllocJoystick(getDeviceDescription(&xic), guid, 6, 10, 1);
if (!js)
continue;
js->win32.index = index;
_glfwInputJoystick(js, GLFW_CONNECTED);
}
}
if (_glfw.win32.dinput8.api)
{
if (FAILED(IDirectInput8_EnumDevices(_glfw.win32.dinput8.api,
DI8DEVCLASS_GAMECTRL,
deviceCallback,
NULL,
DIEDFL_ALLDEVICES)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Failed to enumerate DirectInput8 devices");
return;
}
}
}
// Checks for joystick disconnection after DBT_DEVICEREMOVECOMPLETE
//
void _glfwDetectJoystickDisconnectionWin32(void)
{
int jid;
for (jid = 0; jid <= GLFW_JOYSTICK_LAST; jid++)
{
_GLFWjoystick* js = _glfw.joysticks + jid;
if (js->present)
_glfwPlatformPollJoystick(js, _GLFW_POLL_PRESENCE);
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
GLFWbool _glfwPlatformInitJoysticks(void)
{
if (_glfw.win32.dinput8.instance)
{
if (FAILED(DirectInput8Create(GetModuleHandle(NULL),
DIRECTINPUT_VERSION,
&IID_IDirectInput8W,
(void**) &_glfw.win32.dinput8.api,
NULL)))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create interface");
return GLFW_FALSE;
}
}
_glfwDetectJoystickConnectionWin32();
return GLFW_TRUE;
}
void _glfwPlatformTerminateJoysticks(void)
{
int jid;
for (jid = GLFW_JOYSTICK_1; jid <= GLFW_JOYSTICK_LAST; jid++)
closeJoystick(_glfw.joysticks + jid);
if (_glfw.win32.dinput8.api)
IDirectInput8_Release(_glfw.win32.dinput8.api);
}
int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
{
if (js->win32.device)
{
int i, ai = 0, bi = 0, pi = 0;
HRESULT result;
DIJOYSTATE state;
IDirectInputDevice8_Poll(js->win32.device);
result = IDirectInputDevice8_GetDeviceState(js->win32.device,
sizeof(state),
&state);
if (result == DIERR_NOTACQUIRED || result == DIERR_INPUTLOST)
{
IDirectInputDevice8_Acquire(js->win32.device);
IDirectInputDevice8_Poll(js->win32.device);
result = IDirectInputDevice8_GetDeviceState(js->win32.device,
sizeof(state),
&state);
}
if (FAILED(result))
{
closeJoystick(js);
return GLFW_FALSE;
}
if (mode == _GLFW_POLL_PRESENCE)
return GLFW_TRUE;
for (i = 0; i < js->win32.objectCount; i++)
{
const void* data = (char*) &state + js->win32.objects[i].offset;
switch (js->win32.objects[i].type)
{
case _GLFW_TYPE_AXIS:
case _GLFW_TYPE_SLIDER:
{
const float value = (*((LONG*) data) + 0.5f) / 32767.5f;
_glfwInputJoystickAxis(js, ai, value);
ai++;
break;
}
case _GLFW_TYPE_BUTTON:
{
const char value = (*((BYTE*) data) & 0x80) != 0;
_glfwInputJoystickButton(js, bi, value);
bi++;
break;
}
case _GLFW_TYPE_POV:
{
const int states[9] =
{
GLFW_HAT_UP,
GLFW_HAT_RIGHT_UP,
GLFW_HAT_RIGHT,
GLFW_HAT_RIGHT_DOWN,
GLFW_HAT_DOWN,
GLFW_HAT_LEFT_DOWN,
GLFW_HAT_LEFT,
GLFW_HAT_LEFT_UP,
GLFW_HAT_CENTERED
};
// Screams of horror are appropriate at this point
int stateIndex = LOWORD(*(DWORD*) data) / (45 * DI_DEGREES);
if (stateIndex < 0 || stateIndex > 8)
stateIndex = 8;
_glfwInputJoystickHat(js, pi, states[stateIndex]);
pi++;
break;
}
}
}
}
else
{
int i, dpad = 0;
DWORD result;
XINPUT_STATE xis;
const WORD buttons[10] =
{
XINPUT_GAMEPAD_A,
XINPUT_GAMEPAD_B,
XINPUT_GAMEPAD_X,
XINPUT_GAMEPAD_Y,
XINPUT_GAMEPAD_LEFT_SHOULDER,
XINPUT_GAMEPAD_RIGHT_SHOULDER,
XINPUT_GAMEPAD_BACK,
XINPUT_GAMEPAD_START,
XINPUT_GAMEPAD_LEFT_THUMB,
XINPUT_GAMEPAD_RIGHT_THUMB
};
result = XInputGetState(js->win32.index, &xis);
if (result != ERROR_SUCCESS)
{
if (result == ERROR_DEVICE_NOT_CONNECTED)
closeJoystick(js);
return GLFW_FALSE;
}
if (mode == _GLFW_POLL_PRESENCE)
return GLFW_TRUE;
_glfwInputJoystickAxis(js, 0, (xis.Gamepad.sThumbLX + 0.5f) / 32767.5f);
_glfwInputJoystickAxis(js, 1, -(xis.Gamepad.sThumbLY + 0.5f) / 32767.5f);
_glfwInputJoystickAxis(js, 2, (xis.Gamepad.sThumbRX + 0.5f) / 32767.5f);
_glfwInputJoystickAxis(js, 3, -(xis.Gamepad.sThumbRY + 0.5f) / 32767.5f);
_glfwInputJoystickAxis(js, 4, xis.Gamepad.bLeftTrigger / 127.5f - 1.f);
_glfwInputJoystickAxis(js, 5, xis.Gamepad.bRightTrigger / 127.5f - 1.f);
for (i = 0; i < 10; i++)
{
const char value = (xis.Gamepad.wButtons & buttons[i]) ? 1 : 0;
_glfwInputJoystickButton(js, i, value);
}
if (xis.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP)
dpad |= GLFW_HAT_UP;
if (xis.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT)
dpad |= GLFW_HAT_RIGHT;
if (xis.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN)
dpad |= GLFW_HAT_DOWN;
if (xis.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT)
dpad |= GLFW_HAT_LEFT;
_glfwInputJoystickHat(js, 0, dpad);
}
return GLFW_TRUE;
}
const char* _glfwPlatformGetMappingName(void)
{
return "Windows";
}
void _glfwPlatformUpdateGamepadGUID(char* guid)
{
if (strcmp(guid + 20, "504944564944") == 0)
{
char original[33];
strncpy(original, guid, sizeof(original) - 1);
sprintf(guid, "03000000%.4s0000%.4s000000000000",
original, original + 4);
}
}
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