/*
* Stops all currently playing effects.
*/
int
SDL_SYS_HapticStopAll(SDL_Haptic * haptic)
{
HRESULT ret;
ret = FFDeviceSendForceFeedbackCommand(haptic->hwdata->device,
FFSFFC_STOPALL);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Error stopping device: %s.", FFStrError(ret));
}
return 0;
}
/*
* Stops an effect.
*/
int
SDL_SYS_HapticStopEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
{
HRESULT ret;
ret = FFEffectStop(effect->hweffect->ref);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Unable to stop the effect: %s.",
FFStrError(ret));
}
return 0;
}
/*
* Unpauses the device.
*/
int
SDL_SYS_HapticUnpause(SDL_Haptic * haptic)
{
HRESULT ret;
ret = FFDeviceSendForceFeedbackCommand(haptic->hwdata->device,
FFSFFC_CONTINUE);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Error pausing device: %s.", FFStrError(ret));
}
return 0;
}
/*
* Sets the gain.
*/
int
SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain)
{
HRESULT ret;
Uint32 val;
val = gain * 100; /* Mac OS X uses 0 to 10,000 */
ret = FFDeviceSetForceFeedbackProperty(haptic->hwdata->device,
FFPROP_FFGAIN, &val);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Error setting gain: %s.", FFStrError(ret));
}
return 0;
}
/*
* Frees the effect.
*/
void
SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic, struct haptic_effect *effect)
{
HRESULT ret;
ret = FFDeviceReleaseEffect(haptic->hwdata->device, effect->hweffect->ref);
if (ret != FF_OK) {
SDL_SetError("Haptic: Error removing the effect from the device: %s.",
FFStrError(ret));
}
SDL_SYS_HapticFreeFFEFFECT(&effect->hweffect->effect,
effect->effect.type);
SDL_free(effect->hweffect);
effect->hweffect = NULL;
}
/*
* Creates a new haptic effect.
*/
int
SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
SDL_HapticEffect * base)
{
HRESULT ret;
CFUUIDRef type;
/* Alloc the effect. */
effect->hweffect = (struct haptic_hweffect *)
SDL_malloc(sizeof(struct haptic_hweffect));
if (effect->hweffect == NULL) {
SDL_OutOfMemory();
goto err_hweffect;
}
/* Get the type. */
type = SDL_SYS_HapticEffectType(base->type);
if (type == NULL) {
goto err_hweffect;
}
/* Get the effect. */
if (SDL_SYS_ToFFEFFECT(haptic, &effect->hweffect->effect, base) < 0) {
goto err_effectdone;
}
/* Create the actual effect. */
ret = FFDeviceCreateEffect(haptic->hwdata->device, type,
&effect->hweffect->effect,
&effect->hweffect->ref);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to create effect: %s.", FFStrError(ret));
goto err_effectdone;
}
return 0;
err_effectdone:
SDL_SYS_HapticFreeFFEFFECT(&effect->hweffect->effect, base->type);
err_hweffect:
if (effect->hweffect != NULL) {
SDL_free(effect->hweffect);
effect->hweffect = NULL;
}
return -1;
}
/*
* Gets the status of a haptic effect.
*/
int
SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
struct haptic_effect *effect)
{
HRESULT ret;
FFEffectStatusFlag status;
ret = FFEffectGetEffectStatus(effect->hweffect->ref, &status);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to get effect status: %s.",
FFStrError(ret));
return -1;
}
if (status == 0)
return SDL_FALSE;
return SDL_TRUE; /* Assume it's playing or emulated. */
}
/*
* Updates an effect.
*/
int
SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
struct haptic_effect *effect,
SDL_HapticEffect * data)
{
HRESULT ret;
FFEffectParameterFlag flags;
FFEFFECT temp;
/* Get the effect. */
SDL_memset(&temp, 0, sizeof(FFEFFECT));
if (SDL_SYS_ToFFEFFECT(haptic, &temp, data) < 0) {
goto err_update;
}
/* Set the flags. Might be worthwhile to diff temp with loaded effect and
* only change those parameters. */
flags = FFEP_DIRECTION |
FFEP_DURATION |
FFEP_ENVELOPE |
FFEP_STARTDELAY |
FFEP_TRIGGERBUTTON |
FFEP_TRIGGERREPEATINTERVAL | FFEP_TYPESPECIFICPARAMS;
/* Create the actual effect. */
ret = FFEffectSetParameters(effect->hweffect->ref, &temp, flags);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to update effect: %s.", FFStrError(ret));
goto err_update;
}
/* Copy it over. */
SDL_SYS_HapticFreeFFEFFECT(&effect->hweffect->effect, data->type);
SDL_memcpy(&effect->hweffect->effect, &temp, sizeof(FFEFFECT));
return 0;
err_update:
SDL_SYS_HapticFreeFFEFFECT(&temp, data->type);
return -1;
}
/*
* Sets the autocentering.
*/
int
SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
{
HRESULT ret;
Uint32 val;
/* Mac OS X only has 0 (off) and 1 (on) */
if (autocenter == 0)
val = 0;
else
val = 1;
ret = FFDeviceSetForceFeedbackProperty(haptic->hwdata->device,
FFPROP_AUTOCENTER, &val);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Error setting autocenter: %s.",
FFStrError(ret));
}
return 0;
}
/*
* Runs an effect.
*/
int
SDL_SYS_HapticRunEffect(SDL_Haptic * haptic, struct haptic_effect *effect,
Uint32 iterations)
{
HRESULT ret;
Uint32 iter;
/* Check if it's infinite. */
if (iterations == SDL_HAPTIC_INFINITY) {
iter = FF_INFINITE;
} else
iter = iterations;
/* Run the effect. */
ret = FFEffectStart(effect->hweffect->ref, iter, 0);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Unable to run the effect: %s.",
FFStrError(ret));
}
return 0;
}
/*
* Opens the haptic device from the file descriptor.
*/
static int
SDL_SYS_HapticOpenFromService(SDL_Haptic * haptic, io_service_t service)
{
HRESULT ret;
int ret2;
/* Allocate the hwdata */
haptic->hwdata = (struct haptic_hwdata *)
SDL_malloc(sizeof(*haptic->hwdata));
if (haptic->hwdata == NULL) {
SDL_OutOfMemory();
goto creat_err;
}
SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
/* Open the device */
ret = FFCreateDevice(service, &haptic->hwdata->device);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to create device from service: %s.",
FFStrError(ret));
goto creat_err;
}
/* Get supported features. */
ret2 = GetSupportedFeatures(haptic);
if (ret2 < 0) {
goto open_err;
}
/* Reset and then enable actuators. */
ret = FFDeviceSendForceFeedbackCommand(haptic->hwdata->device,
FFSFFC_RESET);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to reset device: %s.", FFStrError(ret));
goto open_err;
}
ret = FFDeviceSendForceFeedbackCommand(haptic->hwdata->device,
FFSFFC_SETACTUATORSON);
if (ret != FF_OK) {
SDL_SetError("Haptic: Unable to enable actuators: %s.",
FFStrError(ret));
goto open_err;
}
/* Allocate effects memory. */
haptic->effects = (struct haptic_effect *)
SDL_malloc(sizeof(struct haptic_effect) * haptic->neffects);
if (haptic->effects == NULL) {
SDL_OutOfMemory();
goto open_err;
}
/* Clear the memory */
SDL_memset(haptic->effects, 0,
sizeof(struct haptic_effect) * haptic->neffects);
return 0;
/* Error handling */
open_err:
FFReleaseDevice(haptic->hwdata->device);
creat_err:
if (haptic->hwdata != NULL) {
SDL_free(haptic->hwdata);
haptic->hwdata = NULL;
}
return -1;
}
/*
* Gets supported features.
*/
static unsigned int
GetSupportedFeatures(SDL_Haptic * haptic)
{
HRESULT ret;
FFDeviceObjectReference device;
FFCAPABILITIES features;
unsigned int supported;
Uint32 val;
device = haptic->hwdata->device;
ret = FFDeviceGetForceFeedbackCapabilities(device, &features);
if (ret != FF_OK) {
return SDL_SetError("Haptic: Unable to get device's supported features.");
}
supported = 0;
/* Get maximum effects. */
haptic->neffects = features.storageCapacity;
haptic->nplaying = features.playbackCapacity;
/* Test for effects. */
FF_TEST(FFCAP_ET_CONSTANTFORCE, SDL_HAPTIC_CONSTANT);
FF_TEST(FFCAP_ET_RAMPFORCE, SDL_HAPTIC_RAMP);
/* !!! FIXME: put this back when we have more bits in 2.1 */
/* FF_TEST(FFCAP_ET_SQUARE, SDL_HAPTIC_SQUARE); */
FF_TEST(FFCAP_ET_SINE, SDL_HAPTIC_SINE);
FF_TEST(FFCAP_ET_TRIANGLE, SDL_HAPTIC_TRIANGLE);
FF_TEST(FFCAP_ET_SAWTOOTHUP, SDL_HAPTIC_SAWTOOTHUP);
FF_TEST(FFCAP_ET_SAWTOOTHDOWN, SDL_HAPTIC_SAWTOOTHDOWN);
FF_TEST(FFCAP_ET_SPRING, SDL_HAPTIC_SPRING);
FF_TEST(FFCAP_ET_DAMPER, SDL_HAPTIC_DAMPER);
FF_TEST(FFCAP_ET_INERTIA, SDL_HAPTIC_INERTIA);
FF_TEST(FFCAP_ET_FRICTION, SDL_HAPTIC_FRICTION);
FF_TEST(FFCAP_ET_CUSTOMFORCE, SDL_HAPTIC_CUSTOM);
/* Check if supports gain. */
ret = FFDeviceGetForceFeedbackProperty(device, FFPROP_FFGAIN,
&val, sizeof(val));
if (ret == FF_OK) {
supported |= SDL_HAPTIC_GAIN;
} else if (ret != FFERR_UNSUPPORTED) {
return SDL_SetError("Haptic: Unable to get if device supports gain: %s.",
FFStrError(ret));
}
/* Checks if supports autocenter. */
ret = FFDeviceGetForceFeedbackProperty(device, FFPROP_AUTOCENTER,
&val, sizeof(val));
if (ret == FF_OK) {
supported |= SDL_HAPTIC_AUTOCENTER;
} else if (ret != FFERR_UNSUPPORTED) {
return SDL_SetError
("Haptic: Unable to get if device supports autocenter: %s.",
FFStrError(ret));
}
/* Check for axes, we have an artificial limit on axes */
haptic->naxes = ((features.numFfAxes) > 3) ? 3 : features.numFfAxes;
/* Actually store the axes we want to use */
SDL_memcpy(haptic->hwdata->axes, features.ffAxes,
haptic->naxes * sizeof(Uint8));
/* Always supported features. */
supported |= SDL_HAPTIC_STATUS | SDL_HAPTIC_PAUSE;
haptic->supported = supported;
return 0;
}
