src/haptic/SDL_haptic.c
author Edgar Simo <bobbens@gmail.com>
Wed, 02 Jul 2008 08:24:35 +0000
branchgsoc2008_force_feedback
changeset 2489 96adc8025331
parent 2488 8e2bdbccf7ff
child 2490 be9b206d44af
permissions -rw-r--r--
Exposed some of the joystick stuff to the haptic subsystem. Added SDL_JoystickIsHaptic().
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 2008 Edgar Simo
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_haptic_c.h"
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#include "SDL_syshaptic.h"
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#include "../joystick/SDL_joystick_c.h" /* For SDL_PrivateJoystickValid */
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static Uint8 SDL_numhaptics = 0;
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SDL_Haptic **SDL_haptics = NULL;
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static SDL_Haptic *default_haptic = NULL;
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/*
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 * Initializes the Haptic devices.
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 */
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int
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SDL_HapticInit(void)
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{  
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   int arraylen;
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   int status;
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   SDL_numhaptics = 0;
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   status = SDL_SYS_HapticInit();
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   if (status >= 0) {
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      arraylen = (status + 1) * sizeof(*SDL_haptics);
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      SDL_haptics = (SDL_Haptic **) SDL_malloc(arraylen);
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      if (SDL_haptics == NULL) {
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         SDL_numhaptics = 0;
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      } else {
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         SDL_memset(SDL_haptics, 0, arraylen);
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         SDL_numhaptics = status;
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      }
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      status = 0;
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   }
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   default_haptic = NULL;
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   return status;
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}
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/*
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 * Returns the number of available devices.
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 */
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int
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SDL_NumHaptics(void)
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{
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   return SDL_numhaptics;
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}
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/*
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 * Gets the name of a Haptic device by index.
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 */
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const char *
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SDL_HapticName(int device_index)
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{
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   if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
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      SDL_SetError("There are %d haptic devices available", SDL_numhaptics);
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      return NULL;
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   }
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   return SDL_SYS_HapticName(device_index);
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}
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/*
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 * Opens a Haptic device.
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 */
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SDL_Haptic *
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SDL_HapticOpen(int device_index)
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{
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   int i;
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   SDL_Haptic *haptic;
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   if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
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      SDL_SetError("There are %d haptic devices available", SDL_numhaptics);
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      return NULL;
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   }
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   /* If the haptic is already open, return it */
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   for (i=0; SDL_haptics[i]; i++) {             
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      if (device_index == SDL_haptics[i]->index) {
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         haptic = SDL_haptics[i];
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         ++haptic->ref_count;
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         return haptic;
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      }
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   }
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   /* Create the haptic device */
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   haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
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   if (haptic == NULL) {
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      SDL_OutOfMemory();
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      return NULL;
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   }
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   /* Initialize the haptic device */
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   SDL_memset(haptic, 0, (sizeof *haptic));
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   haptic->index = device_index;
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   if (SDL_SYS_HapticOpen(haptic) < 0) {
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      SDL_free(haptic);
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      return NULL;
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   }
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   /* Add haptic to list */
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   ++haptic->ref_count;
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   for (i = 0; SDL_haptics[i]; ++i)
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      /* Skip to next haptic */ ;
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   SDL_haptics[i] = haptic;
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   return haptic;
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}
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/*
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 * Returns SDL_TRUE if joystick has haptic features.
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 */
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int
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SDL_JoystickIsHaptic(SDL_Joystick * joystick)
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{
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   int ret;
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   if (!SDL_PrivateJoystickValid(&joystick)) {
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      return -1;
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   }
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   145
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   ret = SDL_SYS_JoystickIsHaptic(joystick);
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   147
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   if (ret > 0) return SDL_TRUE;
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   else if (ret == 0) return SDL_FALSE;
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   else return -1;
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   151
}
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/*
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 * Opens a haptic device from a joystick.
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 */
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SDL_Haptic *
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SDL_HapticOpenFromJoystick(SDL_Joystick * joystick)
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{
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   if (!SDL_PrivateJoystickValid(&joystick)) {
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      return -1;
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   162
   }
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   return -1;
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   164
}
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   167
/*
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 * Checks to see if the haptic device is valid
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 */
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static int
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ValidHaptic(SDL_Haptic ** haptic)
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{
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   int valid;
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   174
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   if (*haptic == NULL) {
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      SDL_SetError("Haptic device hasn't been opened yet");
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      valid = 0;
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   } else {
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      valid = 1;
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   }
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   return valid;
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   182
}
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   185
/*
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 * Closes a SDL_Haptic device.
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 */
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   188
void
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   189
SDL_HapticClose(SDL_Haptic * haptic)
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   190
{
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   191
   int i;
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   192
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   193
   /* Must be valid */
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   194
   if (!ValidHaptic(&haptic)) {
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   195
      return;
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   196
   }
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   197
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   198
   /* Check if it's still in use */
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   199
   if (--haptic->ref_count < 0) {
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      return;
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   201
   }
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   202
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   203
   /* Close it, properly removing effects if needed */
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   204
   for (i=0; i<haptic->neffects; i++) {
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   205
      if (haptic->effects[i].hweffect != NULL) {
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   206
         SDL_HapticDestroyEffect(haptic,i);
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   207
      }
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   208
   }
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   209
   SDL_SYS_HapticClose(haptic);
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   210
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   211
   /* Remove from the list */
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   212
   for (i = 0; SDL_haptics[i]; ++i) {
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   213
      if (haptic == SDL_haptics[i]) {
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   214
         SDL_memcpy(&SDL_haptics[i], &SDL_haptics[i + 1],
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               (SDL_numhaptics - i) * sizeof(haptic));
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   216
         break;
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   217
      }
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   218
   }
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   219
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   220
   /* Free */
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   221
   SDL_free(haptic);
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   222
}
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   223
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   224
/*
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   225
 * Cleans up after the subsystem.
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   226
 */
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   227
void
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   228
SDL_HapticQuit(void)
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   229
{
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   230
   SDL_numhaptics = 0;
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   231
3f80bf1528b4 Properly quit the SDL_haptic subsystem.
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   232
   SDL_SYS_HapticQuit();
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   233
   if (SDL_haptics != NULL) {
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   234
      SDL_free(SDL_haptics);
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   235
      SDL_haptics = NULL;
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   236
   }
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   237
}
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   238
2478
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   239
/*
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   240
 * Returns the number of effects a haptic device has.
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   241
 */
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   242
int
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   243
SDL_HapticNumEffects(SDL_Haptic * haptic)
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   244
{
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   245
   if (!ValidHaptic(&haptic)) {
4fd783e0f34b Added query functions for haptic devices.
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   246
      return -1;
4fd783e0f34b Added query functions for haptic devices.
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   247
   }
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   248
4fd783e0f34b Added query functions for haptic devices.
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   249
   return haptic->neffects;
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   250
}
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   251
4fd783e0f34b Added query functions for haptic devices.
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   252
/*
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   253
 * Returns supported effects by the device.
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   254
 */
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   255
unsigned int
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   256
SDL_HapticQueryEffects(SDL_Haptic * haptic)
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   257
{
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   258
   if (!ValidHaptic(&haptic)) {
4fd783e0f34b Added query functions for haptic devices.
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   259
      return -1;
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   260
   }
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   261
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   262
   return haptic->supported;
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   263
}
4fd783e0f34b Added query functions for haptic devices.
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diff changeset
   264
2486
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   265
/*
24dd8b8669fa Added SDL_HAPTIC_CUSTOM (not supported on linux).
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   266
 * Checks to see if the device can support the effect.
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   267
 */
2478
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   268
int
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   269
SDL_HapticEffectSupported(SDL_Haptic * haptic, SDL_HapticEffect * effect)
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   270
{
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   271
   if (!ValidHaptic(&haptic)) {
4fd783e0f34b Added query functions for haptic devices.
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   272
      return -1;
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   273
   }
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   274
4fd783e0f34b Added query functions for haptic devices.
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   275
   if ((haptic->supported & effect->type) != 0)
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   276
      return SDL_TRUE;
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   277
   return SDL_FALSE;
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   278
}
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   279
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   280
/*
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   281
 * Creates a new haptic effect.
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   282
 */
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   283
int
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diff changeset
   284
SDL_HapticNewEffect(SDL_Haptic * haptic, SDL_HapticEffect * effect)
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   285
{
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diff changeset
   286
   int i;
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diff changeset
   287
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   288
   /* Check for device validity. */
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   289
   if (!ValidHaptic(&haptic)) {
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   290
      return -1;
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diff changeset
   291
   }
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diff changeset
   292
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b883974445fc Some more error reporting.
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   293
   /* Check to see if effect is supported */
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   294
   if (SDL_HapticEffectSupported(haptic,effect)==SDL_FALSE) {
b883974445fc Some more error reporting.
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diff changeset
   295
      SDL_SetError("Haptic effect not supported by haptic device.");
b883974445fc Some more error reporting.
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diff changeset
   296
      return -1;
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diff changeset
   297
   }
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diff changeset
   298
2477
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   299
   /* See if there's a free slot */
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   300
   for (i=0; i<haptic->neffects; i++) {
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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   301
      if (haptic->effects[i].hweffect == NULL) {
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   302
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   303
         /* Now let the backend create the real effect */
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b883974445fc Some more error reporting.
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   304
         if (SDL_SYS_HapticNewEffect(haptic,&haptic->effects[i],effect) != 0) {
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   305
            return -1; /* Backend failed to create effect */
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   306
         }
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diff changeset
   307
         return i;
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diff changeset
   308
      }
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   309
   }
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   310
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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   311
   SDL_SetError("Haptic device has no free space left.");
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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   312
   return -1;
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   313
}
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   314
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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   315
/*
2480
b883974445fc Some more error reporting.
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   316
 * Checks to see if an effect is valid.
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   317
 */
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   318
static int
b883974445fc Some more error reporting.
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diff changeset
   319
ValidEffect(SDL_Haptic * haptic, int effect)
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diff changeset
   320
{
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diff changeset
   321
   if ((effect < 0) || (effect >= haptic->neffects)) {
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diff changeset
   322
      SDL_SetError("Invalid haptic effect identifier.");
b883974445fc Some more error reporting.
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diff changeset
   323
      return 0;
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diff changeset
   324
   }
b883974445fc Some more error reporting.
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   325
   return 1;
b883974445fc Some more error reporting.
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diff changeset
   326
}
b883974445fc Some more error reporting.
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diff changeset
   327
b883974445fc Some more error reporting.
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diff changeset
   328
/*
2488
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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   329
 * Updates an effect.
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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   330
 */
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   331
int
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   332
SDL_HapticUpdateEffect(SDL_Haptic * haptic, int effect, SDL_HapticEffect * data)
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   333
{
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   334
   if (!ValidHaptic(&haptic) || !ValidEffect(haptic,effect)) {
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   335
      return -1;
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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parents: 2486
diff changeset
   336
   }
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   337
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
Edgar Simo <bobbens@gmail.com>
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diff changeset
   338
   /* Updates the effect */
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
Edgar Simo <bobbens@gmail.com>
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diff changeset
   339
   if (SDL_SYS_HapticUpdateEffect(haptic,&haptic->effects[effect],data) < 0) {
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   340
      return -1;
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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parents: 2486
diff changeset
   341
   }
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   342
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   343
   return 0;
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   344
}
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
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diff changeset
   345
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2486
diff changeset
   346
8e2bdbccf7ff Added SDL_HapticUpdateEffect().
Edgar Simo <bobbens@gmail.com>
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diff changeset
   347
/*
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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   348
 * Runs the haptic effect on the device.
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   349
 */
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   350
int
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   351
SDL_HapticRunEffect(SDL_Haptic * haptic, int effect)
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
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diff changeset
   352
{
2480
b883974445fc Some more error reporting.
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diff changeset
   353
   if (!ValidHaptic(&haptic) || !ValidEffect(haptic,effect)) {
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   354
      return -1;
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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parents: 2476
diff changeset
   355
   }
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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diff changeset
   356
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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diff changeset
   357
   /* Run the effect */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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diff changeset
   358
   if (SDL_SYS_HapticRunEffect(haptic,&haptic->effects[effect]) < 0) {
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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parents: 2478
diff changeset
   359
      return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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parents: 2478
diff changeset
   360
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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parents: 2478
diff changeset
   361
b9eb2cfe16cd Added some preliminary support for haptic effect control.
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diff changeset
   362
   return 0;
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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diff changeset
   363
}
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
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parents: 2476
diff changeset
   364
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   365
/*
2485
67978eea6d10 Added SDL_HapticStopEffect().
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diff changeset
   366
 * Stops the haptic effect on the device.
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
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diff changeset
   367
 */
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   368
int
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   369
SDL_HapticStopEffect(SDL_Haptic * haptic, int effect)
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   370
{
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   371
   if (!ValidHaptic(&haptic) || !ValidEffect(haptic,effect)) {
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   372
      return -1;
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   373
   }
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   374
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   375
   /* Stop the effect */
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   376
   if (SDL_SYS_HapticStopEffect(haptic,&haptic->effects[effect]) < 0) {
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   377
      return -1;
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   378
   }
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   379
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   380
   return 0;
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   381
}
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   382
67978eea6d10 Added SDL_HapticStopEffect().
Edgar Simo <bobbens@gmail.com>
parents: 2484
diff changeset
   383
/*
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   384
 * Gets rid of a haptic effect.
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   385
 */
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   386
void
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   387
SDL_HapticDestroyEffect(SDL_Haptic * haptic, int effect)
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   388
{
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   389
   if (!ValidHaptic(&haptic) || !ValidEffect(haptic,effect)) {
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   390
      return;
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   391
   }
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   392
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   393
   /* Not allocated */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   394
   if (haptic->effects[effect].hweffect == NULL) {
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   395
      return;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   396
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   397
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   398
   SDL_SYS_HapticDestroyEffect(haptic, &haptic->effects[effect]);
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   399
}
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   400
2483
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   401
/*
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   402
 * Sets the global gain of the device.
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   403
 */
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   404
int
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   405
SDL_HapticSetGain(SDL_Haptic * haptic, int gain )
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   406
{
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   407
   if (!ValidHaptic(&haptic)) {
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   408
      return -1;
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   409
   }
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   410
2484
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   411
   if ((haptic->supported & SDL_HAPTIC_GAIN) == 0) {
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   412
      SDL_SetError("Haptic device does not support setting gain.");
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   413
      return -1;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   414
   }
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   415
2483
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   416
   if ((gain < 0) || (gain > 100)) {
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   417
      SDL_SetError("Haptic gain must be between 0 and 100.");
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   418
      return -1;
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   419
   }
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   420
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   421
   if (SDL_SYS_HapticSetGain(haptic,gain) < 0) {
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   422
      return -1;
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   423
   }
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   424
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   425
   return 0;
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   426
}
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   427
2484
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   428
/*
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   429
 * Makes the device autocenter, 0 disables.
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   430
 */
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   431
int
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   432
SDL_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter )
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   433
{
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   434
   if (!ValidHaptic(&haptic)) {
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   435
      return -1;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   436
   }
2483
9d52368ebcf5 Setting effects memory to 0.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   437
2484
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   438
   if ((haptic->supported & SDL_HAPTIC_AUTOCENTER) == 0) {
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   439
      SDL_SetError("Haptic device does not support setting autocenter.");
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   440
      return -1;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   441
   }
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   442
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   443
   if ((autocenter < 0) || (autocenter > 100)) {
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   444
      SDL_SetError("Haptic autocenter must be between 0 and 100.");
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   445
      return -1;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   446
   }                                           
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   447
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   448
   if (SDL_SYS_HapticSetAutocenter(haptic,autocenter) < 0) {
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   449
      return -1;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   450
   }
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   451
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   452
   return 0;
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   453
}
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   454
666472fd4cb0 HapticSetGain checks to see if device supports it.
Edgar Simo <bobbens@gmail.com>
parents: 2483
diff changeset
   455