src/haptic/linux/SDL_syshaptic.c
author Edgar Simo <bobbens@gmail.com>
Tue, 01 Jul 2008 11:21:36 +0000
branchgsoc2008_force_feedback
changeset 2482 b51ad78812d5
parent 2481 5d0ea4576f20
child 2483 9d52368ebcf5
permissions -rw-r--r--
Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead). Added and partially implemented CONDITION and RAMP effects.
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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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#ifdef SDL_JOYSTICK_LINUX
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#include "SDL_haptic.h"
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#include "../SDL_haptic_c.h"
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#include "../SDL_syshaptic.h"
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#include <unistd.h> /* close */
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#include <linux/input.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <linux/limits.h>
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#include <string.h>
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#include <errno.h>
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#define MAX_HAPTICS  32
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/*
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 * List of available haptic devices.
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 */
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static struct
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{
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   char *fname;
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   SDL_Haptic *haptic;
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} SDL_hapticlist[MAX_HAPTICS];
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/*
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 * Haptic system hardware data.
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 */
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struct haptic_hwdata
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{
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   int fd;
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};
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/*
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 * Haptic system effect data.
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 */
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struct haptic_hweffect
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{
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   struct ff_effect effect;
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};
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#define test_bit(nr, addr) \
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   (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0)
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#define EV_TEST(ev,f) \
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   if (test_bit((ev), features)) ret |= (f);
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/*
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 * Test whether a device has haptic properties.
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 * Returns available properties or 0 if there are none.
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 */
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static int
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EV_IsHaptic(int fd)
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{
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   unsigned int ret;
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   unsigned long features[1 + FF_MAX/sizeof(unsigned long)];
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   ret = 0;
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   ioctl(fd, EVIOCGBIT(EV_FF, sizeof(unsigned long) * 4), features);
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   EV_TEST(FF_CONSTANT,   SDL_HAPTIC_CONSTANT);
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   EV_TEST(FF_PERIODIC,   SDL_HAPTIC_PERIODIC);
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   EV_TEST(FF_RAMP,       SDL_HAPTIC_RAMP);
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   EV_TEST(FF_SPRING,     SDL_HAPTIC_SPRING);
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   EV_TEST(FF_FRICTION,   SDL_HAPTIC_FRICTION);
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   EV_TEST(FF_DAMPER,     SDL_HAPTIC_DAMPER);
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   EV_TEST(FF_INERTIA,    SDL_HAPTIC_INERTIA);
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   EV_TEST(FF_GAIN,       SDL_HAPTIC_GAIN);
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   EV_TEST(FF_AUTOCENTER, SDL_HAPTIC_AUTOCENTER);
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   return ret;
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}
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int
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SDL_SYS_HapticInit(void)
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{
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   const char joydev_pattern[] = "/dev/input/event%d";
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   dev_t dev_nums[MAX_HAPTICS];
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   char path[PATH_MAX];
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   struct stat sb;
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   int fd;
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   int i, j, k;
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   int duplicate;
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   int numhaptics;
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   numhaptics = 0;
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   i = 0;
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   for (j = 0; j < MAX_HAPTICS; ++j) {
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      snprintf(path, PATH_MAX, joydev_pattern, i++);
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      /* check to see if file exists */
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      if (stat(path,&sb) != 0)
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         break;
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      /* check for duplicates */
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      duplicate = 0;
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      for (k = 0; (k < numhaptics) && !duplicate; ++k) {
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         if (sb.st_rdev == dev_nums[k]) {
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            duplicate = 1;
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         }                                                     
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      }                                                         
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      if (duplicate) {
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         continue;
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      }
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      /* try to open */
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      fd = open(path, O_RDWR, 0);
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      if (fd < 0) continue;
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#ifdef DEBUG_INPUT_EVENTS
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      printf("Checking %s\n", path);
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#endif          
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      /* see if it works */
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      if (EV_IsHaptic(fd)!=0) {
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         SDL_hapticlist[numhaptics].fname = SDL_strdup(path);
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         SDL_hapticlist[numhaptics].haptic = NULL;
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         dev_nums[numhaptics] = sb.st_rdev;
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         ++numhaptics;
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      }
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      close(fd);
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   }
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   return numhaptics;
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}
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   159
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/*
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 * Return the name of a haptic device, does not need to be opened.
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 */
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const char *
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SDL_SYS_HapticName(int index)
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{
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   int fd;
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   static char namebuf[128];
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   char *name;
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   name = NULL;
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   fd = open(SDL_hapticlist[index].fname, O_RDONLY, 0);
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   if (fd >= 0) {
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      if (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) {
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         name = SDL_hapticlist[index].fname;
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      }
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      else {
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         name = namebuf;
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      }
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   }
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   close(fd);
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   return name;
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}
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   185
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/*
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 * Opens a haptic device for usage.
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 */
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int
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SDL_SYS_HapticOpen(SDL_Haptic * haptic)
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{
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   int i;
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   int fd;
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   /* Open the character device */
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   fd = open(SDL_hapticlist[haptic->index].fname, O_RDWR, 0);
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   if (fd < 0) {
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      SDL_SetError("Unable to open %s\n", SDL_hapticlist[haptic->index]);
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      return -1;
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   }
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   /* Allocate the hwdata */
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   haptic->hwdata = (struct haptic_hwdata *)
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         SDL_malloc(sizeof(*haptic->hwdata));
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   if (haptic->hwdata == NULL) {
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      SDL_OutOfMemory();
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      goto open_err;
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   208
   }
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   SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
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   /* Set the data */
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   haptic->hwdata->fd = fd;
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   haptic->supported = EV_IsHaptic(fd);
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   213
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   /* Set the effects */
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   if (ioctl(fd, EVIOCGEFFECTS, &haptic->neffects) < 0) {
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      SDL_SetError("Unable to query haptic device memory.");
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      goto open_err;
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   }
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   haptic->effects = (struct haptic_effect *)
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         SDL_malloc(sizeof(struct haptic_effect) * haptic->neffects);
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   if (haptic->effects == NULL) {
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      SDL_OutOfMemory();
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      goto open_err;
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   224
   }
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   225
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   return 0;
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   227
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   228
   /* Error handling */
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open_err:
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   close(fd);
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   231
   if (haptic->hwdata != NULL) {
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   232
      free(haptic->hwdata);
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      haptic->hwdata = NULL;
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   234
   }
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   return -1;
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   236
}
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   238
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   239
/*
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   240
 * Closes the haptic device.
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   241
 */
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   242
void
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SDL_SYS_HapticClose(SDL_Haptic * haptic)
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   244
{
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   245
   if (haptic->hwdata) {
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   246
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   247
      /* Clean up */
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      close(haptic->hwdata->fd);
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   249
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   250
      /* Free */
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      SDL_free(haptic->hwdata);
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      haptic->hwdata = NULL;
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      SDL_free(haptic->effects);
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   254
      haptic->neffects = 0;
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   }
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   256
}
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   257
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   258
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   259
/* 
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   260
 * Clean up after system specific haptic stuff
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   261
 */
2474
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   262
void
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   263
SDL_SYS_HapticQuit(void)
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   264
{
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   265
   int i;
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   266
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   267
   for (i=0; SDL_hapticlist[i].fname != NULL; i++) {
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   268
      SDL_free(SDL_hapticlist[i].fname);
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   269
   }
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   270
   SDL_hapticlist[0].fname = NULL;
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   271
}
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   272
2481
5d0ea4576f20 More comments.
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   273
#define  CLAMP(x)    (((x) > 32767) ? 32767 : x)
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   274
/*
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   275
 * Initializes the linux effect struct from a haptic_effect.
2481
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   276
 * Values above 32767 (for unsigned) are unspecified so we must clamp.
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   277
 */
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   278
static int
2480
b883974445fc Some more error reporting.
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   279
SDL_SYS_ToFFEffect( struct ff_effect * dest, SDL_HapticEffect * src )
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   280
{
2482
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
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diff changeset
   281
   int i;
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   282
   SDL_HapticConstant *constant;
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   283
   SDL_HapticPeriodic *periodic;
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   284
   SDL_HapticCondition *condition;
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   285
   SDL_HapticRamp *ramp;
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diff changeset
   286
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   287
   /* Clear up */
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   288
   SDL_memset(dest, 0, sizeof(struct ff_effect));
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diff changeset
   289
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   290
   switch (src->type) {
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   291
      case SDL_HAPTIC_CONSTANT:
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   292
         constant = &src->constant;
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diff changeset
   293
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diff changeset
   294
         /* Header */
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   295
         dest->type = FF_CONSTANT;
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   296
         dest->direction = CLAMP(constant->direction);
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diff changeset
   297
b883974445fc Some more error reporting.
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diff changeset
   298
         /* Replay */
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   299
         dest->replay.length = CLAMP(constant->length);
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diff changeset
   300
         dest->replay.delay = CLAMP(constant->delay);
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diff changeset
   301
b883974445fc Some more error reporting.
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diff changeset
   302
         /* Trigger */
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   303
         dest->trigger.button = CLAMP(constant->button);
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diff changeset
   304
         dest->trigger.interval = CLAMP(constant->interval);
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diff changeset
   305
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diff changeset
   306
         /* Constant */
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diff changeset
   307
         dest->u.constant.level = constant->level;
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diff changeset
   308
b883974445fc Some more error reporting.
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diff changeset
   309
         /* Envelope */
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diff changeset
   310
         dest->u.constant.envelope.attack_length = CLAMP(constant->attack_length);
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diff changeset
   311
         dest->u.constant.envelope.attack_level = CLAMP(constant->attack_level);
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diff changeset
   312
         dest->u.constant.envelope.fade_length = CLAMP(constant->fade_length);
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diff changeset
   313
         dest->u.constant.envelope.fade_level = CLAMP(constant->fade_level);
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diff changeset
   314
b883974445fc Some more error reporting.
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diff changeset
   315
         break;
b883974445fc Some more error reporting.
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diff changeset
   316
b883974445fc Some more error reporting.
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   317
      case SDL_HAPTIC_PERIODIC:
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   318
         periodic = &src->periodic;
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diff changeset
   319
b883974445fc Some more error reporting.
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diff changeset
   320
         /* Header */
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diff changeset
   321
         dest->type = FF_PERIODIC;
2481
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diff changeset
   322
         dest->direction = CLAMP(periodic->direction);
2480
b883974445fc Some more error reporting.
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diff changeset
   323
         
b883974445fc Some more error reporting.
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diff changeset
   324
         /* Replay */
2481
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diff changeset
   325
         dest->replay.length = CLAMP(periodic->length);
5d0ea4576f20 More comments.
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diff changeset
   326
         dest->replay.delay = CLAMP(periodic->delay);
2480
b883974445fc Some more error reporting.
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diff changeset
   327
         
b883974445fc Some more error reporting.
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diff changeset
   328
         /* Trigger */
2481
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diff changeset
   329
         dest->trigger.button = CLAMP(periodic->button);
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diff changeset
   330
         dest->trigger.interval = CLAMP(periodic->interval);
2480
b883974445fc Some more error reporting.
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diff changeset
   331
         
b883974445fc Some more error reporting.
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diff changeset
   332
         /* Constant */
2481
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diff changeset
   333
         switch (periodic->waveform) {
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diff changeset
   334
            case SDL_WAVEFORM_SINE:
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diff changeset
   335
               dest->u.periodic.waveform = FF_SINE;
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diff changeset
   336
               break;
5d0ea4576f20 More comments.
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parents: 2480
diff changeset
   337
            case SDL_WAVEFORM_SQUARE:
5d0ea4576f20 More comments.
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diff changeset
   338
               dest->u.periodic.waveform = FF_SQUARE;
5d0ea4576f20 More comments.
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parents: 2480
diff changeset
   339
               break;
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   340
            case SDL_WAVEFORM_TRIANGLE:
5d0ea4576f20 More comments.
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parents: 2480
diff changeset
   341
               dest->u.periodic.waveform = FF_TRIANGLE;
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   342
               break;
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   343
            case SDL_WAVEFORM_SAWTOOTHUP:
5d0ea4576f20 More comments.
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diff changeset
   344
               dest->u.periodic.waveform = FF_SAW_UP;
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diff changeset
   345
               break;
5d0ea4576f20 More comments.
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parents: 2480
diff changeset
   346
            case SDL_WAVEFORM_SAWTOOTHDOWN:
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diff changeset
   347
               dest->u.periodic.waveform = FF_SAW_DOWN;
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Edgar Simo <bobbens@gmail.com>
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diff changeset
   348
               break;
5d0ea4576f20 More comments.
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diff changeset
   349
5d0ea4576f20 More comments.
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diff changeset
   350
            default:
5d0ea4576f20 More comments.
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diff changeset
   351
               SDL_SetError("Unknown waveform.");
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diff changeset
   352
               return -1;
5d0ea4576f20 More comments.
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diff changeset
   353
         }
5d0ea4576f20 More comments.
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diff changeset
   354
         dest->u.periodic.period = CLAMP(periodic->period);
2480
b883974445fc Some more error reporting.
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diff changeset
   355
         dest->u.periodic.magnitude = periodic->magnitude;
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diff changeset
   356
         dest->u.periodic.offset = periodic->offset;
2481
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
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diff changeset
   357
         dest->u.periodic.phase = CLAMP(periodic->phase);
2480
b883974445fc Some more error reporting.
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diff changeset
   358
         
b883974445fc Some more error reporting.
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diff changeset
   359
         /* Envelope */
2481
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   360
         dest->u.periodic.envelope.attack_length = CLAMP(periodic->attack_length);
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   361
         dest->u.periodic.envelope.attack_level = CLAMP(periodic->attack_level);
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   362
         dest->u.periodic.envelope.fade_length = CLAMP(periodic->fade_length);
5d0ea4576f20 More comments.
Edgar Simo <bobbens@gmail.com>
parents: 2480
diff changeset
   363
         dest->u.periodic.envelope.fade_level = CLAMP(periodic->fade_level);
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   364
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   365
         break;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   366
2482
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   367
      case SDL_HAPTIC_SPRING:
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   368
      case SDL_HAPTIC_DAMPER:
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   369
      case SDL_HAPTIC_INERTIA:
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   370
      case SDL_HAPTIC_FRICTION:
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   371
         condition = &src->condition;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   372
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   373
         /* Header */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   374
         if (dest->type == SDL_HAPTIC_SPRING)
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   375
            dest->type = FF_SPRING;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   376
         else if (dest->type == SDL_HAPTIC_DAMPER)
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   377
            dest->type = FF_DAMPER;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   378
         else if (dest->type == SDL_HAPTIC_INERTIA)
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   379
            dest->type = FF_INERTIA;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   380
         else if (dest->type == SDL_HAPTIC_FRICTION)
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   381
            dest->type = FF_FRICTION;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   382
         dest->direction = CLAMP(condition->direction);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   383
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   384
         /* Replay */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   385
         dest->replay.length = CLAMP(condition->length);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   386
         dest->replay.delay = CLAMP(condition->delay);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   387
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   388
         /* Trigger */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   389
         dest->trigger.button = CLAMP(condition->button);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   390
         dest->trigger.interval = CLAMP(condition->interval);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   391
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   392
         /* Condition - TODO handle axes */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   393
         dest->u.condition[0].right_saturation = CLAMP(condition->right_sat);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   394
         dest->u.condition[0].left_saturation = CLAMP(condition->left_sat);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   395
         dest->u.condition[0].right_coeff = condition->right_coeff;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   396
         dest->u.condition[0].left_coeff = condition->left_coeff;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   397
         dest->u.condition[0].deadband = CLAMP(condition->deadband);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   398
         dest->u.condition[0].center = condition->center;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   399
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   400
         break;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   401
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   402
      case SDL_HAPTIC_RAMP:
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   403
         ramp = &src->ramp;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   404
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   405
         /* Header */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   406
         dest->type = FF_RAMP;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   407
         dest->direction = CLAMP(ramp->direction);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   408
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   409
         /* Replay */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   410
         dest->replay.length = CLAMP(ramp->length);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   411
         dest->replay.delay = CLAMP(ramp->delay);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   412
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   413
         /* Trigger */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   414
         dest->trigger.button = CLAMP(ramp->button);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   415
         dest->trigger.interval = CLAMP(ramp->interval);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   416
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   417
         /* Ramp */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   418
         dest->u.ramp.start_level = ramp->start;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   419
         dest->u.ramp.end_level = ramp->end;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   420
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   421
         /* Envelope */
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   422
         dest->u.ramp.envelope.attack_length = CLAMP(ramp->attack_length);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   423
         dest->u.ramp.envelope.attack_level = CLAMP(ramp->attack_level);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   424
         dest->u.ramp.envelope.fade_length = CLAMP(ramp->fade_length);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   425
         dest->u.ramp.envelope.fade_level = CLAMP(ramp->fade_level);
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   426
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   427
         break;
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   428
b51ad78812d5 Removed the linux only SDL_HAPTIC_RUMBLE (use PERIODIC instead).
Edgar Simo <bobbens@gmail.com>
parents: 2481
diff changeset
   429
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   430
      default:
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   431
         SDL_SetError("Unknown haptic effect type.");
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   432
         return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   433
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   434
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   435
   return 0;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   436
}
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   437
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   438
/*
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   439
 * Creates a new haptic effect.
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   440
 */
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   441
int
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   442
SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect * effect,
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   443
      SDL_HapticEffect * base)
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   444
{
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   445
   struct ff_effect * linux_effect;
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   446
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   447
   /* Allocate the hardware effect */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   448
   effect->hweffect = (struct haptic_hweffect *) 
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   449
         SDL_malloc(sizeof(struct haptic_hweffect));
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   450
   if (effect->hweffect == NULL) {
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   451
      SDL_OutOfMemory();
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   452
      return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   453
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   454
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   455
   /* Prepare the ff_effect */
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   456
   linux_effect = &effect->hweffect->effect;
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   457
   if (SDL_SYS_ToFFEffect( linux_effect, base ) != 0) {
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   458
      return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   459
   }
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   460
   linux_effect->id = -1; /* Have the kernel give it an id */
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   461
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   462
   /* Upload the effect */
2480
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   463
   if (ioctl(haptic->hwdata->fd, EVIOCSFF, linux_effect) < 0) {
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   464
      SDL_SetError("Error uploading effect to the haptic device: %s",
b883974445fc Some more error reporting.
Edgar Simo <bobbens@gmail.com>
parents: 2479
diff changeset
   465
            strerror(errno));
2479
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   466
      return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   467
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   468
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   469
   return 0;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   470
}
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   471
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   472
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   473
/*
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   474
 * Runs an effect.
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   475
 */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   476
int
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   477
SDL_SYS_HapticRunEffect(SDL_Haptic * haptic, struct haptic_effect * effect)
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   478
{
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   479
   struct input_event run;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   480
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   481
   /* Prepare to run the effect */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   482
   run.type = EV_FF;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   483
   run.code = effect->hweffect->effect.id;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   484
   run.value = 1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   485
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   486
   if (write(haptic->hwdata->fd, (const void*) &run, sizeof(run)) < 0) {
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   487
      SDL_SetError("Unable to run the haptic effect.");
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   488
      return -1;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   489
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   490
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   491
   return 0;
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   492
}
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   493
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   494
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   495
/*
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   496
 * Frees the effect
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   497
 */
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   498
void
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   499
SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic, struct haptic_effect * effect)
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   500
{
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   501
   if (ioctl(haptic->hwdata->fd, EVIOCRMFF, effect->hweffect->effect.id) < 0) {
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   502
      SDL_SetError("Error removing the effect from the haptic device.");
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   503
   }
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   504
   SDL_free(effect->hweffect);
b9eb2cfe16cd Added some preliminary support for haptic effect control.
Edgar Simo <bobbens@gmail.com>
parents: 2478
diff changeset
   505
   effect->hweffect = NULL;
2477
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   506
}
97f75ea43a93 Starting to add infrastructure to handle haptic effects.
Edgar Simo <bobbens@gmail.com>
parents: 2476
diff changeset
   507
2474
3f80bf1528b4 Properly quit the SDL_haptic subsystem.
Edgar Simo <bobbens@gmail.com>
parents: 2472
diff changeset
   508
2472
3f73c88c9abb First commit of the SDL_haptic subsystem.
Edgar Simo <bobbens@gmail.com>
parents:
diff changeset
   509
#endif /* SDL_HAPTIC_LINUX */