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SDL_syshaptic.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 2008 Edgar Simo
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
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#ifdef SDL_HAPTIC_DINPUT
#include "SDL_haptic.h"
#include "../SDL_syshaptic.h"
#include "SDL_joystick.h"
#include "../../joystick/SDL_sysjoystick.h" /* For the real SDL_Joystick */
/*#include "../../joystick/win32/SDL_sysjoystick_c.h"*/ /* For joystick hwdata */
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
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#define DIRECTINPUT_VERSION 0x0700 /* Need at least DirectX 7 for dwStartDelay */
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#include <dinput.h>
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#include <dxerr.h>
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#ifdef _MSC_VER
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# pragma comment (lib, "dinput8.lib")
# pragma comment (lib, "dxguid.lib")
# pragma comment (lib, "dxerr.lib")
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#endif /* _MSC_VER */
/* an ISO hack for VisualC++ */
#ifdef _MSC_VER
#define snprintf _snprintf
#endif /* _MSC_VER */
#define MAX_HAPTICS 32
/*
* List of available haptic devices.
*/
static struct
{
DIDEVICEINSTANCE instance;
SDL_Haptic *haptic;
} SDL_hapticlist[MAX_HAPTICS];
/*
* Haptic system hardware data.
*/
struct haptic_hwdata
{
LPDIRECTINPUTDEVICE2 device;
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DWORD axes[3];
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DIDEVCAPS capabilities;
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};
/*
* Haptic system effect data.
*/
struct haptic_hweffect
{
DIEFFECT effect;
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LPDIRECTINPUTEFFECT ref;
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};
/*
* Internal stuff.
*/
static LPDIRECTINPUT dinput = NULL;
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/*
* External stuff.
*/
extern HINSTANCE SDL_Instance;
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extern HWND SDL_HelperWindow;
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/*
* Prototypes.
*/
static BOOL CALLBACK EnumHapticsCallback(const DIDEVICEINSTANCE * pdidInstance, VOID * pContext);
/*
* Like SDL_SetError but for DX error codes.
*/
static void
DI_SetError(const char *str, HRESULT err)
{
SDL_SetError( "Haptic: %s - %s: %s", str,
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DXGetErrorString(err),
DXGetErrorDescription(err));
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}
/*
* Initializes the haptic subsystem.
*/
int
SDL_SYS_HapticInit(void)
{
HRESULT ret;
if (dinput != NULL) { /* Already open. */
SDL_SetError("Haptic: SubSystem already open.");
return -1;
}
/* Clear all the memory. */
SDL_memset(SDL_hapticlist, 0, sizeof(SDL_hapticlist));
SDL_numhaptics = 0;
ret = CoInitialize(NULL);
if (FAILED(ret)) {
DI_SetError("Coinitialize",ret);
return -1;
}
ret = CoCreateInstance(&CLSID_DirectInput, NULL, CLSCTX_INPROC_SERVER,
&IID_IDirectInput, &dinput);
if (FAILED(ret)) {
DI_SetError("CoCreateInstance",ret);
return -1;
}
/* Because we used CoCreateInstance, we need to Initialize it, first. */
ret = IDirectInput_Initialize(dinput, SDL_Instance, DIRECTINPUT_VERSION);
if (FAILED(ret)) {
DI_SetError("Initializing DirectInput device",ret);
return -1;
}
/* Look for haptic devices. */
ret = IDirectInput_EnumDevices( dinput,
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0, /* Not sure if this is legal, but gets all devices. */
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EnumHapticsCallback,
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NULL, DIEDFL_FORCEFEEDBACK | DIEDFL_ATTACHEDONLY);
if (FAILED(ret)) {
DI_SetError("Enumerating DirectInput devices",ret);
return -1;
}
return SDL_numhaptics;
}
/*
* Callback to find the haptic devices.
*/
static BOOL CALLBACK
EnumHapticsCallback(const DIDEVICEINSTANCE * pdidInstance, VOID * pContext)
{
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SDL_memcpy(&SDL_hapticlist[SDL_numhaptics].instance, pdidInstance,
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sizeof(DIDEVICEINSTANCE));
SDL_numhaptics++;
if (SDL_numhaptics >= MAX_HAPTICS)
return DIENUM_STOP;
return DIENUM_CONTINUE;
}
/*
* Return the name of a haptic device, does not need to be opened.
*/
const char *
SDL_SYS_HapticName(int index)
{
return SDL_hapticlist[index].instance.tszProductName;
}
/*
* Callback to get all supported effects.
*/
#define EFFECT_TEST(e,s) \
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if ((pei->guid.Data1 == e.Data1) && \
(pei->guid.Data2 == e.Data2) && \
(pei->guid.Data3 == e.Data3) && \
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(SDL_strcmp(pei->guid.Data4,e.Data4)==0)) \
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haptic->supported |= (s)
static BOOL CALLBACK
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DI_EffectCallback(LPCDIEFFECTINFO pei, LPVOID pv)
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{
/* Prepare the haptic device. */
SDL_Haptic *haptic = (SDL_Haptic*) pv;
/* Get supported. */
EFFECT_TEST(GUID_Spring, SDL_HAPTIC_SPRING);
EFFECT_TEST(GUID_Damper, SDL_HAPTIC_DAMPER);
EFFECT_TEST(GUID_Inertia, SDL_HAPTIC_INERTIA);
EFFECT_TEST(GUID_Friction, SDL_HAPTIC_FRICTION);
EFFECT_TEST(GUID_ConstantForce, SDL_HAPTIC_CONSTANT);
EFFECT_TEST(GUID_CustomForce, SDL_HAPTIC_CUSTOM);
EFFECT_TEST(GUID_Sine, SDL_HAPTIC_SINE);
EFFECT_TEST(GUID_Square, SDL_HAPTIC_SQUARE);
EFFECT_TEST(GUID_Triangle, SDL_HAPTIC_TRIANGLE);
EFFECT_TEST(GUID_SawtoothUp, SDL_HAPTIC_SAWTOOTHUP);
EFFECT_TEST(GUID_SawtoothDown, SDL_HAPTIC_SAWTOOTHDOWN);
EFFECT_TEST(GUID_RampForce, SDL_HAPTIC_RAMP);
/* Check for more. */
return DIENUM_CONTINUE;
}
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/*
* Callback to get supported axes.
*/
static BOOL CALLBACK
DI_DeviceObjectCallback(LPCDIDEVICEOBJECTINSTANCE dev, LPVOID pvRef)
{
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SDL_Haptic *haptic = (SDL_Haptic *) pvRef;
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if ((dev->dwType & DIDFT_AXIS) && (dev->dwFlags & DIDOI_FFACTUATOR)) {
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haptic->hwdata->axes[haptic->naxes] = dev->dwOfs;
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haptic->naxes++;
/* Currently using the artificial limit of 3 axes. */
if (haptic->naxes >= 3) {
return DIENUM_STOP;
}
}
return DIENUM_CONTINUE;
}
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/*
* Opens the haptic device from the file descriptor.
*
* Steps:
* - Open temporary DirectInputDevice interface.
* - Create DirectInputDevice2 interface.
* - Release DirectInputDevice interface.
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* - Set cooperative level.
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* - Set data format.
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* - Get capabilities.
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* - Acquire exclusiveness.
* - Reset actuators.
* - Get supported featuers.
*/
static int
SDL_SYS_HapticOpenFromInstance(SDL_Haptic * haptic, DIDEVICEINSTANCE instance)
{
HRESULT ret;
LPDIRECTINPUTDEVICE device;
DIPROPDWORD dipdw;
/* Allocate the hwdata */
haptic->hwdata = (struct haptic_hwdata *)
SDL_malloc(sizeof(*haptic->hwdata));
if (haptic->hwdata == NULL) {
SDL_OutOfMemory();
goto creat_err;
}
SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
/* Open the device */
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ret = IDirectInput_CreateDevice( dinput, &instance.guidInstance,
&device, NULL );
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if (FAILED(ret)) {
DI_SetError("Creating DirectInput device",ret);
goto creat_err;
}
/* Now get the IDirectInputDevice2 interface, instead. */
ret = IDirectInputDevice_QueryInterface( device,
&IID_IDirectInputDevice2,
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(LPVOID *) &haptic->hwdata->device );
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/* Done with the temporary one now. */
IDirectInputDevice_Release(device);
if (FAILED(ret)) {
DI_SetError("Querying DirectInput interface",ret);
goto creat_err;
}
/* Grab it exclusively to use force feedback stuff. */
ret =IDirectInputDevice2_SetCooperativeLevel( haptic->hwdata->device,
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SDL_HelperWindow,
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DISCL_EXCLUSIVE | DISCL_BACKGROUND );
if (FAILED(ret)) {
DI_SetError("Setting cooperative level to exclusive",ret);
goto acquire_err;
}
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/* Set data format. */
ret = IDirectInputDevice2_SetDataFormat( haptic->hwdata->device,
&c_dfDIJoystick2 );
if (FAILED(ret)) {
DI_SetError("Setting data format",ret);
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goto query_err;
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}
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/* Get capabilities. */
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haptic->hwdata->capabilities.dwSize = sizeof(DIDEVCAPS);
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ret = IDirectInputDevice2_GetCapabilities( haptic->hwdata->device,
&haptic->hwdata->capabilities );
if (FAILED(ret)) {
DI_SetError("Getting device capabilities",ret);
goto acquire_err;
}
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/* Get number of axes. */
ret = IDirectInputDevice2_EnumObjects( haptic->hwdata->device,
DI_DeviceObjectCallback,
haptic, DIDFT_AXIS );
if (FAILED(ret)) {
DI_SetError("Getting device axes",ret);
goto query_err;
}
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/* Acquire the device. */
ret = IDirectInputDevice2_Acquire(haptic->hwdata->device);
if (FAILED(ret)) {
DI_SetError("Acquiring DirectInput device",ret);
goto query_err;
}
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/* Reset all actuators - just in case. */
ret = IDirectInputDevice2_SendForceFeedbackCommand( haptic->hwdata->device,
DISFFC_RESET );
if (FAILED(ret)) {
DI_SetError("Resetting device",ret);
goto acquire_err;
}
/* Enabling actuators. */
ret = IDirectInputDevice2_SendForceFeedbackCommand( haptic->hwdata->device,
DISFFC_SETACTUATORSON );
if (FAILED(ret)) {
DI_SetError("Enabling actuators",ret);
goto acquire_err;
}
/* Get supported effects. */
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ret = IDirectInputDevice2_EnumEffects( haptic->hwdata->device,
DI_EffectCallback, haptic, DIEFT_ALL );
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if (FAILED(ret)) {
DI_SetError("Enumerating supported effects",ret);
goto acquire_err;
}
if (haptic->supported == 0) { /* Error since device supports nothing. */
SDL_SetError("Haptic: Internal error on finding supported effects.");
goto acquire_err;
}
/* Check autogain and autocenter. */
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = 10000;
ret = IDirectInputDevice2_SetProperty( haptic->hwdata->device,
DIPROP_FFGAIN, &dipdw.diph );
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if (!FAILED(ret)) { /* Gain is supported. */
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haptic->supported |= SDL_HAPTIC_GAIN;
}
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dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
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dipdw.dwData = DIPROPAUTOCENTER_OFF;
ret = IDirectInputDevice2_SetProperty( haptic->hwdata->device,
DIPROP_AUTOCENTER, &dipdw.diph );
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if (!FAILED(ret)) { /* Autocenter is supported. */
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haptic->supported |= SDL_HAPTIC_AUTOCENTER;
}
/* Check maximum effects. */
haptic->neffects = 128; /* TODO actually figure this out. */
haptic->nplaying = 128;
/* Prepare effects memory. */
haptic->effects = (struct haptic_effect *)
SDL_malloc(sizeof(struct haptic_effect) * haptic->neffects);
if (haptic->effects == NULL) {
SDL_OutOfMemory();
goto acquire_err;
}
/* Clear the memory */
SDL_memset(haptic->effects, 0,
sizeof(struct haptic_effect) * haptic->neffects);
return 0;
/* Error handling */
acquire_err:
IDirectInputDevice2_Unacquire(haptic->hwdata->device);
query_err:
IDirectInputDevice2_Release(haptic->hwdata->device);
creat_err:
if (haptic->hwdata != NULL) {
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SDL_free(haptic->hwdata);
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haptic->hwdata = NULL;
}
return -1;
}
/*
* Opens a haptic device for usage.
*/
int
SDL_SYS_HapticOpen(SDL_Haptic * haptic)
{
return SDL_SYS_HapticOpenFromInstance( haptic,
SDL_hapticlist[haptic->index].instance );
}
/*
* Opens a haptic device from first mouse it finds for usage.
*/
int
SDL_SYS_HapticMouse(void)
{
return -1;
}
/*
* Checks to see if a joystick has haptic features.
*/
int
SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
{
return SDL_FALSE;
}
/*
* Checks to see if the haptic device and joystick and in reality the same.
*/
int
SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic, SDL_Joystick * joystick)
{
return 0;
}
/*
* Opens a SDL_Haptic from a SDL_Joystick.
*/
int
SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
{
return -1;
}
/*
* Closes the haptic device.
*/
void
SDL_SYS_HapticClose(SDL_Haptic * haptic)
{
if (haptic->hwdata) {
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/* Free effects. */
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SDL_free(haptic->effects);
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haptic->effects = NULL;
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haptic->neffects = 0;
/* Clean up */
IDirectInputDevice2_Unacquire(haptic->hwdata->device);
IDirectInputDevice2_Release(haptic->hwdata->device);
/* Free */
SDL_free(haptic->hwdata);
haptic->hwdata = NULL;
}
}
/*
* Clean up after system specific haptic stuff
*/
void
SDL_SYS_HapticQuit(void)
{
IDirectInput_Release(dinput);
dinput = NULL;
}
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/*
* Converts an SDL trigger button to an DIEFFECT trigger button.
*/
static DWORD
DIGetTriggerButton( Uint16 button )
{
DWORD dwTriggerButton;
dwTriggerButton = DIEB_NOTRIGGER;
if (button != 0) {
dwTriggerButton = DIJOFS_BUTTON(button - 1);
}
return dwTriggerButton;
}
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/*
* Sets the direction.
*/
static int
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SDL_SYS_SetDirection( DIEFFECT * effect, SDL_HapticDirection *dir, int naxes )
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{
LONG *rglDir;
/* Handle no axes a part. */
if (naxes == 0) {
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effect->dwFlags |= DIEFF_SPHERICAL; /* Set as default. */
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effect->rglDirection = NULL;
return 0;
}
/* Has axes. */
rglDir = SDL_malloc( sizeof(LONG) * naxes );
if (rglDir == NULL) {
SDL_OutOfMemory();
return -1;
}
SDL_memset( rglDir, 0, sizeof(LONG) * naxes );
effect->rglDirection = rglDir;
switch (dir->type) {
case SDL_HAPTIC_POLAR:
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effect->dwFlags |= DIEFF_POLAR;
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rglDir[0] = dir->dir[0];
return 0;
case SDL_HAPTIC_CARTESIAN:
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effect->dwFlags |= DIEFF_CARTESIAN;
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rglDir[0] = dir->dir[0];
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if (naxes > 1)
rglDir[1] = dir->dir[1];
if (naxes > 2)
rglDir[2] = dir->dir[2];
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return 0;
case SDL_HAPTIC_SPHERICAL:
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effect->dwFlags |= DIEFF_SPHERICAL;
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rglDir[0] = dir->dir[0];
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if (naxes > 1)
rglDir[1] = dir->dir[1];
if (naxes > 2)
rglDir[2] = dir->dir[2];
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return 0;
default:
SDL_SetError("Haptic: Unknown direction type.");
return -1;
}
}
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#define CONVERT(x) (((x) > 0x7FFF) ? 10000 : ((x)*10000) / 0x7FFF)
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/*
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* Creates the DIEFFECT from a SDL_HapticEffect.
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*/
static int
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SDL_SYS_ToDIEFFECT( SDL_Haptic * haptic, DIEFFECT * dest, SDL_HapticEffect * src )
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{
int i;
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DICONSTANTFORCE *constant;
DIPERIODIC *periodic;
DICONDITION *condition; /* Actually an array of conditions - one per axis. */
DIRAMPFORCE *ramp;
DICUSTOMFORCE *custom;
DIENVELOPE *envelope;
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SDL_HapticConstant *hap_constant;
SDL_HapticPeriodic *hap_periodic;
SDL_HapticCondition *hap_condition;
SDL_HapticRamp *hap_ramp;
SDL_HapticCustom *hap_custom;
DWORD *axes;
/* Set global stuff. */
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SDL_memset(dest, 0, sizeof(DIEFFECT));
dest->dwSize = sizeof(DIEFFECT); /* Set the structure size. */
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dest->dwSamplePeriod = 0; /* Not used by us. */
dest->dwGain = 10000; /* Gain is set globally, not locally. */
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dest->dwFlags = DIEFF_OBJECTOFFSETS; /* Seems obligatory. */
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/* Envelope. */
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envelope = SDL_malloc( sizeof(DIENVELOPE) );
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if (envelope == NULL) {
SDL_OutOfMemory();
return -1;
}
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SDL_memset(envelope, 0, sizeof(DIENVELOPE));
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dest->lpEnvelope = envelope;
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envelope->dwSize = sizeof(DIENVELOPE); /* Always should be this. */
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/* Axes. */
dest->cAxes = haptic->naxes;
if (dest->cAxes > 0) {
axes = SDL_malloc(sizeof(DWORD) * dest->cAxes);
if (axes == NULL) {
SDL_OutOfMemory();
return -1;
}
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axes[0] = haptic->hwdata->axes[0]; /* Always at least one axis. */
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if (dest->cAxes > 1) {
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axes[1] = haptic->hwdata->axes[1];
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}
if (dest->cAxes > 2) {
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axes[2] = haptic->hwdata->axes[2];
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}
dest->rgdwAxes = axes;
}
/* The big type handling switch, even bigger then linux's version. */
switch (src->type) {
case SDL_HAPTIC_CONSTANT:
hap_constant = &src->constant;
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constant = SDL_malloc( sizeof(DICONSTANTFORCE) );
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if (constant == NULL) {
SDL_OutOfMemory();
return -1;
}
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SDL_memset(constant, 0, sizeof(DICONSTANTFORCE));
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/* Specifics */
constant->lMagnitude = CONVERT(hap_constant->level);
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dest->cbTypeSpecificParams = sizeof(DICONSTANTFORCE);
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dest->lpvTypeSpecificParams = constant;
/* Generics */
dest->dwDuration = hap_constant->length * 1000; /* In microseconds. */
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dest->dwTriggerButton = DIGetTriggerButton(hap_constant->button);
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dest->dwTriggerRepeatInterval = hap_constant->interval;
dest->dwStartDelay = hap_constant->delay * 1000; /* In microseconds. */
/* Direction. */
if (SDL_SYS_SetDirection(dest, &hap_constant->direction, dest->cAxes) < 0) {
return -1;
}
/* Envelope */
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if ((hap_constant->attack_length==0) && (hap_constant->fade_length==0)) {
SDL_free(dest->lpEnvelope);
dest->lpEnvelope = NULL;
}
else {
envelope->dwAttackLevel = CONVERT(hap_constant->attack_level);
envelope->dwAttackTime = hap_constant->attack_length * 1000;
envelope->dwFadeLevel = CONVERT(hap_constant->fade_level);
envelope->dwFadeTime = hap_constant->fade_length * 1000;
}
672
673
674
675
676
677
678
679
680
break;
case SDL_HAPTIC_SINE:
case SDL_HAPTIC_SQUARE:
case SDL_HAPTIC_TRIANGLE:
case SDL_HAPTIC_SAWTOOTHUP:
case SDL_HAPTIC_SAWTOOTHDOWN:
hap_periodic = &src->periodic;
681
periodic = SDL_malloc(sizeof(DIPERIODIC));
682
683
684
685
if (periodic == NULL) {
SDL_OutOfMemory();
return -1;
}
686
SDL_memset(periodic, 0, sizeof(DIPERIODIC));
687
688
689
690
691
692
/* Specifics */
periodic->dwMagnitude = CONVERT(hap_periodic->magnitude);
periodic->lOffset = CONVERT(hap_periodic->offset);
periodic->dwPhase = hap_periodic->phase;
periodic->dwPeriod = hap_periodic->period * 1000;
693
dest->cbTypeSpecificParams = sizeof(DIPERIODIC);
694
695
696
697
dest->lpvTypeSpecificParams = periodic;
/* Generics */
dest->dwDuration = hap_periodic->length * 1000; /* In microseconds. */
698
dest->dwTriggerButton = DIGetTriggerButton(hap_periodic->button);
699
700
701
702
703
704
705
706
707
dest->dwTriggerRepeatInterval = hap_periodic->interval;
dest->dwStartDelay = hap_periodic->delay * 1000; /* In microseconds. */
/* Direction. */
if (SDL_SYS_SetDirection(dest, &hap_periodic->direction, dest->cAxes) < 0) {
return -1;
}
/* Envelope */
708
709
710
711
712
713
714
715
716
717
if ((hap_periodic->attack_length==0) && (hap_periodic->fade_length==0)) {
SDL_free(dest->lpEnvelope);
dest->lpEnvelope = NULL;
}
else {
envelope->dwAttackLevel = CONVERT(hap_periodic->attack_level);
envelope->dwAttackTime = hap_periodic->attack_length * 1000;
envelope->dwFadeLevel = CONVERT(hap_periodic->fade_level);
envelope->dwFadeTime = hap_periodic->fade_length * 1000;
}
718
719
720
721
722
723
724
725
break;
case SDL_HAPTIC_SPRING:
case SDL_HAPTIC_DAMPER:
case SDL_HAPTIC_INERTIA:
case SDL_HAPTIC_FRICTION:
hap_condition = &src->condition;
726
condition = SDL_malloc(sizeof(DICONDITION) * dest->cAxes);
727
728
729
730
if (condition == NULL) {
SDL_OutOfMemory();
return -1;
}
731
SDL_memset(condition, 0, sizeof(DICONDITION));
732
733
/* Specifics */
734
for (i=0; i<(int)dest->cAxes; i++) {
735
736
737
738
739
740
741
condition[i].lOffset = CONVERT(hap_condition->center[i]);
condition[i].lPositiveCoefficient = CONVERT(hap_condition->right_coeff[i]);
condition[i].lNegativeCoefficient = CONVERT(hap_condition->left_coeff[i]);
condition[i].dwPositiveSaturation = CONVERT(hap_condition->right_sat[i]);
condition[i].dwNegativeSaturation = CONVERT(hap_condition->left_sat[i]);
condition[i].lDeadBand = CONVERT(hap_condition->deadband[i]);
}
742
dest->cbTypeSpecificParams = sizeof(DICONDITION) * dest->cAxes;
743
744
745
746
dest->lpvTypeSpecificParams = condition;
/* Generics */
dest->dwDuration = hap_condition->length * 1000; /* In microseconds. */
747
dest->dwTriggerButton = DIGetTriggerButton(hap_condition->button);
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
dest->dwTriggerRepeatInterval = hap_condition->interval;
dest->dwStartDelay = hap_condition->delay * 1000; /* In microseconds. */
/* Direction. */
if (SDL_SYS_SetDirection(dest, &hap_condition->direction, dest->cAxes) < 0) {
return -1;
}
/* Envelope */
/* TODO Check is envelope actually used.
envelope->dwAttackLevel = CONVERT(hap_condition->attack_level);
envelope->dwAttackTime = hap_condition->attack_length * 1000;
envelope->dwFadeLevel = CONVERT(hap_condition->fade_level);
envelope->dwFadeTime = hap_condition->fade_length * 1000;
*/
break;
case SDL_HAPTIC_RAMP:
hap_ramp = &src->ramp;
768
ramp = SDL_malloc(sizeof(DIRAMPFORCE));
769
770
771
772
if (ramp == NULL) {
SDL_OutOfMemory();
return -1;
}
773
SDL_memset(ramp, 0, sizeof(DIRAMPFORCE));
774
775
776
777
/* Specifics */
ramp->lStart = CONVERT(hap_ramp->start);
ramp->lEnd = CONVERT(hap_ramp->end);
778
dest->cbTypeSpecificParams = sizeof(DIRAMPFORCE);
779
780
781
782
dest->lpvTypeSpecificParams = ramp;
/* Generics */
dest->dwDuration = hap_ramp->length * 1000; /* In microseconds. */
783
dest->dwTriggerButton = DIGetTriggerButton(hap_ramp->button);
784
785
786
787
788
789
790
791
792
dest->dwTriggerRepeatInterval = hap_ramp->interval;
dest->dwStartDelay = hap_ramp->delay * 1000; /* In microseconds. */
/* Direction. */
if (SDL_SYS_SetDirection(dest, &hap_ramp->direction, dest->cAxes) < 0) {
return -1;
}
/* Envelope */
793
794
795
796
797
798
799
800
801
802
if ((hap_ramp->attack_length==0) && (hap_ramp->fade_length==0)) {
SDL_free(dest->lpEnvelope);
dest->lpEnvelope = NULL;
}
else {
envelope->dwAttackLevel = CONVERT(hap_ramp->attack_level);
envelope->dwAttackTime = hap_ramp->attack_length * 1000;
envelope->dwFadeLevel = CONVERT(hap_ramp->fade_level);
envelope->dwFadeTime = hap_ramp->fade_length * 1000;
}
803
804
805
806
807
break;
case SDL_HAPTIC_CUSTOM:
hap_custom = &src->custom;
808
custom = SDL_malloc(sizeof(DICUSTOMFORCE));
809
810
811
812
if (custom == NULL) {
SDL_OutOfMemory();
return -1;
}
813
SDL_memset(custom, 0, sizeof(DICUSTOMFORCE));
814
815
816
817
818
819
820
821
822
/* Specifics */
custom->cChannels = hap_custom->channels;
custom->dwSamplePeriod = hap_custom->period * 1000;
custom->cSamples = hap_custom->samples;
custom->rglForceData = SDL_malloc(sizeof(LONG)*custom->cSamples*custom->cChannels);
for (i=0; i<hap_custom->samples*hap_custom->channels; i++) { /* Copy data. */
custom->rglForceData[i] = CONVERT(hap_custom->data[i]);
}
823
dest->cbTypeSpecificParams = sizeof(DICUSTOMFORCE);
824
825
826
827
dest->lpvTypeSpecificParams = custom;
/* Generics */
dest->dwDuration = hap_custom->length * 1000; /* In microseconds. */
828
dest->dwTriggerButton = DIGetTriggerButton(hap_custom->button);
829
830
831
832
833
834
835
836
837
dest->dwTriggerRepeatInterval = hap_custom->interval;
dest->dwStartDelay = hap_custom->delay * 1000; /* In microseconds. */
/* Direction. */
if (SDL_SYS_SetDirection(dest, &hap_custom->direction, dest->cAxes) < 0) {
return -1;
}
/* Envelope */
838
839
840
841
842
843
844
845
846
847
if ((hap_custom->attack_length==0) && (hap_custom->fade_length==0)) {
SDL_free(dest->lpEnvelope);
dest->lpEnvelope = NULL;
}
else {
envelope->dwAttackLevel = CONVERT(hap_custom->attack_level);
envelope->dwAttackTime = hap_custom->attack_length * 1000;
envelope->dwFadeLevel = CONVERT(hap_custom->fade_level);
envelope->dwFadeTime = hap_custom->fade_length * 1000;
}
848
849
850
851
852
853
854
855
856
857
858
859
860
861
break;
default:
SDL_SetError("Haptic: Unknown effect type.");
return -1;
}
return 0;
}
/*
862
* Frees an DIEFFECT allocated by SDL_SYS_ToDIEFFECT.
863
864
*/
static void
865
SDL_SYS_HapticFreeDIEFFECT( DIEFFECT * effect, int type )
866
{
867
DICUSTOMFORCE *custom;
868
869
870
871
872
873
874
875
876
877
878
if (effect->lpEnvelope != NULL) {
SDL_free(effect->lpEnvelope);
effect->lpEnvelope = NULL;
}
if (effect->rgdwAxes != NULL) {
SDL_free(effect->rgdwAxes);
effect->rgdwAxes = NULL;
}
if (effect->lpvTypeSpecificParams != NULL) {
if (type == SDL_HAPTIC_CUSTOM) { /* Must free the custom data. */
879
custom = (DICUSTOMFORCE*) effect->lpvTypeSpecificParams;
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
SDL_free(custom->rglForceData);
custom->rglForceData = NULL;
}
SDL_free(effect->lpvTypeSpecificParams);
effect->lpvTypeSpecificParams = NULL;
}
if (effect->rglDirection != NULL) {
SDL_free(effect->rglDirection);
effect->rglDirection = NULL;
}
}
/*
* Gets the effect type from the generic SDL haptic effect wrapper.
*/
896
897
static REFGUID
SDL_SYS_HapticEffectType(SDL_HapticEffect * effect)
898
{
899
switch (effect->type) {
900
case SDL_HAPTIC_CONSTANT:
901
return &GUID_ConstantForce;
902
903
case SDL_HAPTIC_RAMP:
904
return &GUID_RampForce;
905
906
case SDL_HAPTIC_SQUARE:
907
return &GUID_Square;
908
909
case SDL_HAPTIC_SINE:
910
return &GUID_Sine;
911
912
case SDL_HAPTIC_TRIANGLE:
913
return &GUID_Triangle;
914
915
case SDL_HAPTIC_SAWTOOTHUP:
916
return &GUID_SawtoothUp;
917
918
case SDL_HAPTIC_SAWTOOTHDOWN:
919
return &GUID_SawtoothDown;
920
921
case SDL_HAPTIC_SPRING:
922
return &GUID_Spring;
923
924
case SDL_HAPTIC_DAMPER:
925
return &GUID_Damper;
926
927
case SDL_HAPTIC_INERTIA:
928
return &GUID_Inertia;
929
930
case SDL_HAPTIC_FRICTION:
931
return &GUID_Friction;
932
933
case SDL_HAPTIC_CUSTOM:
934
return &GUID_CustomForce;
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
default:
SDL_SetError("Haptic: Unknown effect type.");
return NULL;
}
}
/*
* Creates a new haptic effect.
*/
int
SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect * effect,
SDL_HapticEffect * base)
{
HRESULT ret;
951
952
/* Get the type. */
953
REFGUID type = SDL_SYS_HapticEffectType(base);
954
955
956
if (type == NULL) {
goto err_hweffect;
}
957
958
959
960
961
962
963
964
965
966
/* Alloc the effect. */
effect->hweffect = (struct haptic_hweffect *)
SDL_malloc(sizeof(struct haptic_hweffect));
if (effect->hweffect == NULL) {
SDL_OutOfMemory();
goto err_hweffect;
}
/* Get the effect. */
967
if (SDL_SYS_ToDIEFFECT(haptic, &effect->hweffect->effect, base) < 0) {
968
969
970
971
goto err_effectdone;
}
/* Create the actual effect. */
972
973
974
975
ret = IDirectInputDevice2_CreateEffect(haptic->hwdata->device, type,
&effect->hweffect->effect, &effect->hweffect->ref, NULL);
if (FAILED(ret)) {
DI_SetError("Unable to create effect",ret);
976
977
978
979
980
981
goto err_effectdone;
}
return 0;
err_effectdone:
982
SDL_SYS_HapticFreeDIEFFECT(&effect->hweffect->effect, base->type);
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
err_hweffect:
if (effect->hweffect != NULL) {
SDL_free(effect->hweffect);
effect->hweffect = NULL;
}
return -1;
}
/*
* Updates an effect.
*/
int
SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
struct haptic_effect * effect, SDL_HapticEffect * data)
{
HRESULT ret;
1000
DWORD flags;