+++ /dev/null
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 2008 Edgar Simo
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
- Sam Lantinga
- slouken@libsdl.org
-*/
-#include "SDL_config.h"
-
-#include "SDL_syshaptic.h"
-#include "SDL_haptic_c.h"
-#include "../joystick/SDL_joystick_c.h" /* For SDL_PrivateJoystickValid */
-
-
-Uint8 SDL_numhaptics = 0;
-SDL_Haptic **SDL_haptics = NULL;
-
-
-/*
- * Initializes the Haptic devices.
- */
-int
-SDL_HapticInit(void)
-{
- int arraylen;
- int status;
-
- SDL_numhaptics = 0;
- status = SDL_SYS_HapticInit();
- if (status >= 0) {
- arraylen = (status + 1) * sizeof(*SDL_haptics);
- SDL_haptics = (SDL_Haptic **) SDL_malloc(arraylen);
- if (SDL_haptics == NULL) { /* Out of memory. */
- SDL_numhaptics = 0;
- } else {
- SDL_memset(SDL_haptics, 0, arraylen);
- SDL_numhaptics = status;
- }
- status = 0;
- }
-
- return status;
-}
-
-
-/*
- * Checks to see if the haptic device is valid
- */
-static int
-ValidHaptic(SDL_Haptic * haptic)
-{
- int i;
- int valid;
-
- valid = 0;
- if (haptic != NULL) {
- for (i = 0; i < SDL_numhaptics; i++) {
- if (SDL_haptics[i] == haptic) {
- valid = 1;
- break;
- }
- }
- }
-
- /* Create the error here. */
- if (valid == 0) {
- SDL_SetError("Haptic: Invalid haptic device identifier");
- }
-
- return valid;
-}
-
-
-/*
- * Returns the number of available devices.
- */
-int
-SDL_NumHaptics(void)
-{
- return SDL_numhaptics;
-}
-
-
-/*
- * Gets the name of a Haptic device by index.
- */
-const char *
-SDL_HapticName(int device_index)
-{
- if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
- SDL_SetError("Haptic: There are %d haptic devices available",
- SDL_numhaptics);
- return NULL;
- }
- return SDL_SYS_HapticName(device_index);
-}
-
-
-/*
- * Opens a Haptic device.
- */
-SDL_Haptic *
-SDL_HapticOpen(int device_index)
-{
- int i;
- SDL_Haptic *haptic;
-
- if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
- SDL_SetError("Haptic: There are %d haptic devices available",
- SDL_numhaptics);
- return NULL;
- }
-
- /* If the haptic is already open, return it */
- for (i = 0; SDL_haptics[i]; i++) {
- if (device_index == SDL_haptics[i]->index) {
- haptic = SDL_haptics[i];
- ++haptic->ref_count;
- return haptic;
- }
- }
-
- /* Create the haptic device */
- haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
- if (haptic == NULL) {
- SDL_OutOfMemory();
- return NULL;
- }
-
- /* Initialize the haptic device */
- SDL_memset(haptic, 0, (sizeof *haptic));
- haptic->index = device_index;
- if (SDL_SYS_HapticOpen(haptic) < 0) {
- SDL_free(haptic);
- return NULL;
- }
-
- /* Disable autocenter and set gain to max. */
- if (haptic->supported & SDL_HAPTIC_GAIN)
- SDL_HapticSetGain(haptic, 100);
- if (haptic->supported & SDL_HAPTIC_AUTOCENTER)
- SDL_HapticSetAutocenter(haptic, 0);
-
- /* Add haptic to list */
- ++haptic->ref_count;
- for (i = 0; SDL_haptics[i]; i++)
- /* Skip to next haptic */ ;
- SDL_haptics[i] = haptic;
-
- return haptic;
-}
-
-
-/*
- * Returns 1 if the device has been opened.
- */
-int
-SDL_HapticOpened(int device_index)
-{
- int i, opened;
-
- opened = 0;
- for (i = 0; SDL_haptics[i]; i++) {
- if (SDL_haptics[i]->index == (Uint8) device_index) {
- opened = 1;
- break;
- }
- }
- return opened;
-}
-
-
-/*
- * Returns the index to a haptic device.
- */
-int
-SDL_HapticIndex(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return haptic->index;
-}
-
-
-/*
- * Returns SDL_TRUE if mouse is haptic, SDL_FALSE if it isn't.
- */
-int
-SDL_MouseIsHaptic(void)
-{
- if (SDL_SYS_HapticMouse() < 0)
- return SDL_FALSE;
- return SDL_TRUE;
-}
-
-
-/*
- * Returns the haptic device if mouse is haptic or NULL elsewise.
- */
-SDL_Haptic *
-SDL_HapticOpenFromMouse(void)
-{
- int device_index;
-
- device_index = SDL_SYS_HapticMouse();
-
- if (device_index < 0) {
- SDL_SetError("Haptic: Mouse isn't a haptic device.");
- return NULL;
- }
-
- return SDL_HapticOpen(device_index);
-}
-
-
-/*
- * Returns SDL_TRUE if joystick has haptic features.
- */
-int
-SDL_JoystickIsHaptic(SDL_Joystick * joystick)
-{
- int ret;
-
- /* Must be a valid joystick */
- if (!SDL_PrivateJoystickValid(&joystick)) {
- return -1;
- }
-
- ret = SDL_SYS_JoystickIsHaptic(joystick);
-
- if (ret > 0)
- return SDL_TRUE;
- else if (ret == 0)
- return SDL_FALSE;
- else
- return -1;
-}
-
-
-/*
- * Opens a haptic device from a joystick.
- */
-SDL_Haptic *
-SDL_HapticOpenFromJoystick(SDL_Joystick * joystick)
-{
- int i;
- SDL_Haptic *haptic;
-
- /* Must be a valid joystick */
- if (!SDL_PrivateJoystickValid(&joystick)) {
- SDL_SetError("Haptic: Joystick isn't valid.");
- return NULL;
- }
-
- /* Joystick must be haptic */
- if (SDL_SYS_JoystickIsHaptic(joystick) <= 0) {
- SDL_SetError("Haptic: Joystick isn't a haptic device.");
- return NULL;
- }
-
- /* Check to see if joystick's haptic is already open */
- for (i = 0; SDL_haptics[i]; i++) {
- if (SDL_SYS_JoystickSameHaptic(SDL_haptics[i], joystick)) {
- haptic = SDL_haptics[i];
- ++haptic->ref_count;
- return haptic;
- }
- }
-
- /* Create the haptic device */
- haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
- if (haptic == NULL) {
- SDL_OutOfMemory();
- return NULL;
- }
-
- /* Initialize the haptic device */
- SDL_memset(haptic, 0, sizeof(SDL_Haptic));
- if (SDL_SYS_HapticOpenFromJoystick(haptic, joystick) < 0) {
- SDL_free(haptic);
- return NULL;
- }
-
- /* Add haptic to list */
- ++haptic->ref_count;
- for (i = 0; SDL_haptics[i]; i++)
- /* Skip to next haptic */ ;
- SDL_haptics[i] = haptic;
-
- return haptic;
-}
-
-
-/*
- * Closes a SDL_Haptic device.
- */
-void
-SDL_HapticClose(SDL_Haptic * haptic)
-{
- int i;
-
- /* Must be valid */
- if (!ValidHaptic(haptic)) {
- return;
- }
-
- /* Check if it's still in use */
- if (--haptic->ref_count < 0) {
- return;
- }
-
- /* Close it, properly removing effects if needed */
- for (i = 0; i < haptic->neffects; i++) {
- if (haptic->effects[i].hweffect != NULL) {
- SDL_HapticDestroyEffect(haptic, i);
- }
- }
- SDL_SYS_HapticClose(haptic);
-
- /* Remove from the list */
- for (i = 0; SDL_haptics[i]; ++i) {
- if (haptic == SDL_haptics[i]) {
- SDL_haptics[i] = NULL;
- SDL_memcpy(&SDL_haptics[i], &SDL_haptics[i + 1],
- (SDL_numhaptics - i) * sizeof(haptic));
- break;
- }
- }
-
- /* Free */
- SDL_free(haptic);
-}
-
-/*
- * Cleans up after the subsystem.
- */
-void
-SDL_HapticQuit(void)
-{
- SDL_SYS_HapticQuit();
- if (SDL_haptics != NULL) {
- SDL_free(SDL_haptics);
- SDL_haptics = NULL;
- }
- SDL_numhaptics = 0;
-}
-
-/*
- * Returns the number of effects a haptic device has.
- */
-int
-SDL_HapticNumEffects(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return haptic->neffects;
-}
-
-
-/*
- * Returns the number of effects a haptic device can play.
- */
-int
-SDL_HapticNumEffectsPlaying(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return haptic->nplaying;
-}
-
-
-/*
- * Returns supported effects by the device.
- */
-unsigned int
-SDL_HapticQuery(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return haptic->supported;
-}
-
-
-/*
- * Returns the number of axis on the device.
- */
-int
-SDL_HapticNumAxes(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return haptic->naxes;
-}
-
-/*
- * Checks to see if the device can support the effect.
- */
-int
-SDL_HapticEffectSupported(SDL_Haptic * haptic, SDL_HapticEffect * effect)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- if ((haptic->supported & effect->type) != 0)
- return SDL_TRUE;
- return SDL_FALSE;
-}
-
-/*
- * Creates a new haptic effect.
- */
-int
-SDL_HapticNewEffect(SDL_Haptic * haptic, SDL_HapticEffect * effect)
-{
- int i;
-
- /* Check for device validity. */
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- /* Check to see if effect is supported */
- if (SDL_HapticEffectSupported(haptic, effect) == SDL_FALSE) {
- SDL_SetError("Haptic: Effect not supported by haptic device.");
- return -1;
- }
-
- /* See if there's a free slot */
- for (i = 0; i < haptic->neffects; i++) {
- if (haptic->effects[i].hweffect == NULL) {
-
- /* Now let the backend create the real effect */
- if (SDL_SYS_HapticNewEffect(haptic, &haptic->effects[i], effect)
- != 0) {
- return -1; /* Backend failed to create effect */
- }
-
- SDL_memcpy(&haptic->effects[i].effect, effect,
- sizeof(SDL_HapticEffect));
- return i;
- }
- }
-
- SDL_SetError("Haptic: Device has no free space left.");
- return -1;
-}
-
-/*
- * Checks to see if an effect is valid.
- */
-static int
-ValidEffect(SDL_Haptic * haptic, int effect)
-{
- if ((effect < 0) || (effect >= haptic->neffects)) {
- SDL_SetError("Haptic: Invalid effect identifier.");
- return 0;
- }
- return 1;
-}
-
-/*
- * Updates an effect.
- */
-int
-SDL_HapticUpdateEffect(SDL_Haptic * haptic, int effect,
- SDL_HapticEffect * data)
-{
- if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
- return -1;
- }
-
- /* Can't change type dynamically. */
- if (data->type != haptic->effects[effect].effect.type) {
- SDL_SetError("Haptic: Updating effect type is illegal.");
- return -1;
- }
-
- /* Updates the effect */
- if (SDL_SYS_HapticUpdateEffect(haptic, &haptic->effects[effect], data) <
- 0) {
- return -1;
- }
-
- SDL_memcpy(&haptic->effects[effect].effect, data,
- sizeof(SDL_HapticEffect));
- return 0;
-}
-
-
-/*
- * Runs the haptic effect on the device.
- */
-int
-SDL_HapticRunEffect(SDL_Haptic * haptic, int effect, Uint32 iterations)
-{
- if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
- return -1;
- }
-
- /* Run the effect */
- if (SDL_SYS_HapticRunEffect(haptic, &haptic->effects[effect], iterations)
- < 0) {
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Stops the haptic effect on the device.
- */
-int
-SDL_HapticStopEffect(SDL_Haptic * haptic, int effect)
-{
- if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
- return -1;
- }
-
- /* Stop the effect */
- if (SDL_SYS_HapticStopEffect(haptic, &haptic->effects[effect]) < 0) {
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Gets rid of a haptic effect.
- */
-void
-SDL_HapticDestroyEffect(SDL_Haptic * haptic, int effect)
-{
- if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
- return;
- }
-
- /* Not allocated */
- if (haptic->effects[effect].hweffect == NULL) {
- return;
- }
-
- SDL_SYS_HapticDestroyEffect(haptic, &haptic->effects[effect]);
-}
-
-/*
- * Gets the status of a haptic effect.
- */
-int
-SDL_HapticGetEffectStatus(SDL_Haptic * haptic, int effect)
-{
- if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
- return -1;
- }
-
- if ((haptic->supported & SDL_HAPTIC_STATUS) == 0) {
- SDL_SetError("Haptic: Device does not support status queries.");
- return -1;
- }
-
- return SDL_SYS_HapticGetEffectStatus(haptic, &haptic->effects[effect]);
-}
-
-/*
- * Sets the global gain of the device.
- */
-int
-SDL_HapticSetGain(SDL_Haptic * haptic, int gain)
-{
- const char *env;
- int real_gain, max_gain;
-
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- if ((haptic->supported & SDL_HAPTIC_GAIN) == 0) {
- SDL_SetError("Haptic: Device does not support setting gain.");
- return -1;
- }
-
- if ((gain < 0) || (gain > 100)) {
- SDL_SetError("Haptic: Gain must be between 0 and 100.");
- return -1;
- }
-
- /* We use the envvar to get the maximum gain. */
- env = SDL_getenv("SDL_HAPTIC_GAIN_MAX");
- if (env != NULL) {
- max_gain = SDL_atoi(env);
-
- /* Check for sanity. */
- if (max_gain < 0)
- max_gain = 0;
- else if (max_gain > 100)
- max_gain = 100;
-
- /* We'll scale it linearly with SDL_HAPTIC_GAIN_MAX */
- real_gain = (gain * max_gain) / 100;
- } else {
- real_gain = gain;
- }
-
- if (SDL_SYS_HapticSetGain(haptic, real_gain) < 0) {
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Makes the device autocenter, 0 disables.
- */
-int
-SDL_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- if ((haptic->supported & SDL_HAPTIC_AUTOCENTER) == 0) {
- SDL_SetError("Haptic: Device does not support setting autocenter.");
- return -1;
- }
-
- if ((autocenter < 0) || (autocenter > 100)) {
- SDL_SetError("Haptic: Autocenter must be between 0 and 100.");
- return -1;
- }
-
- if (SDL_SYS_HapticSetAutocenter(haptic, autocenter) < 0) {
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Pauses the haptic device.
- */
-int
-SDL_HapticPause(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
- SDL_SetError("Haptic: Device does not support setting pausing.");
- return -1;
- }
-
- return SDL_SYS_HapticPause(haptic);
-}
-
-/*
- * Unpauses the haptic device.
- */
-int
-SDL_HapticUnpause(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
- return 0; /* Not going to be paused, so we pretend it's unpaused. */
- }
-
- return SDL_SYS_HapticUnpause(haptic);
-}
-
-/*
- * Stops all the currently playing effects.
- */
-int
-SDL_HapticStopAll(SDL_Haptic * haptic)
-{
- if (!ValidHaptic(haptic)) {
- return -1;
- }
-
- return SDL_SYS_HapticStopAll(haptic);
-}
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