sdl-ios-xcode: src/haptic/win32/SDL

comparison src/haptic/win32/SDL_syshaptic.c @ 2617:a168397d6549 gsoc2008_force_feedback

Finished implementing the haptic<->joystick functions.

author	Edgar Simo <bobbens@gmail.com>
date	Wed, 06 Aug 2008 09:06:41 +0000
parents	088907e9a2bb
children	fb71df34124f

comparison

equal deleted inserted replaced

-:acd5da848404
+:a168397d6549
 #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 */
+#include "../../joystick/win32/SDL_dxjoystick_c.h" /* For joystick hwdata */
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #define DIRECTINPUT_VERSION 0x0700 /* Need at least DirectX 7 for dwStartDelay */
 * Haptic system hardware data.
 */
 struct haptic_hwdata
 {
 LPDIRECTINPUTDEVICE2 device;
-DWORD axes[3];
+DWORD axes[3]; /* Axes to use. */
+int is_joystick; /* Device is loaded as joystick. */
 };
 /*
 * Haptic system effect data.
 DI_SetError(const char *str, HRESULT err)
 {
 SDL_SetError( "Haptic: %s - %s: %s", str,
 DXGetErrorString(err),
 DXGetErrorDescription(err));
+}
+/*
+* Checks to see if two GUID are the same.
+*/
+static int
+DI_GUIDIsSame(GUID * a, GUID * b)
+{
+if (((a)->Data1 == (b)->Data1) &&
+((a)->Data2 == (b)->Data2) &&
+((a)->Data3 == (b)->Data3) &&
+(SDL_strcmp((a)->Data4, (b)->Data4)==0))
+return 1;
+return 0;
 }
 /*
 * Initializes the haptic subsystem.
 /*
 * Callback to get all supported effects.
 */
-#define EFFECT_TEST(e,s)   \
+#define EFFECT_TEST(e,s)               \
-if ((pei->guid.Data1 == e.Data1) &&   \
+if (DI_GUIDIsSame(&pei->guid, &(e)))   \
-(pei->guid.Data2 == e.Data2) && \
-(pei->guid.Data3 == e.Data3) && \
-(SDL_strcmp(pei->guid.Data4,e.Data4)==0)) \
 haptic->supported |= (s)
 static BOOL CALLBACK
 DI_EffectCallback(LPCDIEFFECTINFO pei, LPVOID pv)
 {
 /* Prepare the haptic device. */
 *
 *    Steps:
 *       - Open temporary DirectInputDevice interface.
 *       - Create DirectInputDevice2 interface.
 *       - Release DirectInputDevice interface.
-*       - Set cooperative level.
+*       - Call SDL_SYS_HapticOpenFromDevice2
-*       - Set data format.
-*       - Acquire exclusiveness.
-*       - Reset actuators.
-*       - Get supported featuers.
 */
 static int
 SDL_SYS_HapticOpenFromInstance(SDL_Haptic * haptic, DIDEVICEINSTANCE instance)
 {
 HRESULT ret;
+int ret2;
 LPDIRECTINPUTDEVICE device;
 DIPROPDWORD dipdw;
 /* Allocate the hwdata */
 haptic->hwdata = (struct haptic_hwdata *)
 if (FAILED(ret)) {
 DI_SetError("Querying DirectInput interface",ret);
 goto creat_err;
 }
+ret2 = SDL_SYS_HapticOpenFromDevice2( haptic, haptic->hwdata->device );
+if (ret2 < 0) {
+goto query_err;
+}
+return 0;
+query_err:
+IDirectInputDevice2_Release(haptic->hwdata->device);
+creat_err:
+if (haptic->hwdata != NULL) {
+SDL_free(haptic->hwdata);
+haptic->hwdata = NULL;
+}
+}
+/*
+* Opens the haptic device from the file descriptor.
+*
+*    Steps:
+*       - Set cooperative level.
+*       - Set data format.
+*       - Acquire exclusiveness.
+*       - Reset actuators.
+*       - Get supported featuers.
+*/
+static int
+SDL_SYS_HapticOpenFromDevice2(SDL_Haptic * haptic, LPDIRECTINPUTDEVICE2 device2)
+{
+HRESULT ret;
+/* We'll use the device2 from now on. */
+haptic->hwdata->device = device2;
 /* Grab it exclusively to use force feedback stuff. */
 ret =IDirectInputDevice2_SetCooperativeLevel( haptic->hwdata->device,
 SDL_HelperWindow,
 DISCL_EXCLUSIVE | DISCL_BACKGROUND );
 if (FAILED(ret)) {
 /* Set data format. */
 ret = IDirectInputDevice2_SetDataFormat( haptic->hwdata->device,
 &c_dfDIJoystick2 );
 if (FAILED(ret)) {
 DI_SetError("Setting data format",ret);
-goto query_err;
+goto acquire_err;
 }
 /* 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;
+goto acquire_err;
 }
 /* Acquire the device. */
 ret = IDirectInputDevice2_Acquire(haptic->hwdata->device);
 if (FAILED(ret)) {
 DI_SetError("Acquiring DirectInput device",ret);
-goto query_err;
+goto acquire_err;
 }
 /* Reset all actuators - just in case. */
 ret = IDirectInputDevice2_SendForceFeedbackCommand( haptic->hwdata->device,
 DISFFC_RESET );
 return 0;
 /* Error handling */
 acquire_err:
 IDirectInputDevice2_Unacquire(haptic->hwdata->device);
-query_err:
-IDirectInputDevice2_Release(haptic->hwdata->device);
-creat_err:
-if (haptic->hwdata != NULL) {
-SDL_free(haptic->hwdata);
-haptic->hwdata = NULL;
-}
 return -1;
 }
 * Checks to see if a joystick has haptic features.
 */
 int
 SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick)
 {
+if (joystick->hwdata->Capabilities.dwFlags & DIDC_FORCEFEEDBACK) {
+return SDL_TRUE;
+}
 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)
 {
+HRESULT ret;
+DIDEVICEINSTANCE hap_instance, joy_instance;
+/* Get the device instances. */
+ret = IDirectInputDevice2_GetDeviceInfo( haptic->hwdata->device,
+&hap_instance );
+if (FAILED(ret)) {
+return 0;
+}
+ret = IDirectInputDevice2_GetDeviceInfo( joystick->hwdata->InputDevice,
+&joy_instance );
+if (FAILED(ret)) {
+return 0;
+}
+if (DI_GUIDIsSame(&hap_instance.guidInstance, &joy_instance.guidInstance))
+return 1;
 return 0;
 }
 /*
 * Opens a SDL_Haptic from a SDL_Joystick.
 */
 int
 SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
 {
-return -1;
+int ret;
+ret = SDL_SYS_HapticOpenFromDevice2( haptic, joystick->hwdata->InputDevice );
+if (ret < 0) {
+return -1;
+}
+/* It's using the joystick device. */
+haptic->hwdata->is_joystick = 1;
+return 0;
 }
 /*
 * Closes the haptic device.
 haptic->effects = NULL;
 haptic->neffects = 0;
 /* Clean up */
 IDirectInputDevice2_Unacquire(haptic->hwdata->device);
-IDirectInputDevice2_Release(haptic->hwdata->device);
+/* Only release if isn't grabbed by a joystick. */
+if (haptic->hwdata->is_joystick == 0) {
+IDirectInputDevice2_Release(haptic->hwdata->device);
+}
 /* Free */
 SDL_free(haptic->hwdata);
 haptic->hwdata = NULL;
 }

Mercurial > sdl-ios-xcode

comparison src/haptic/win32/SDL_syshaptic.c @ 2617:a168397d6549 gsoc2008_force_feedback