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

Added SDL_HapticUpdateEffect().

comparison

equal deleted inserted replaced

-:4c8e25ef2d97
+:8e2bdbccf7ff
 }
 /* Prepare the ff_effect */
 linux_effect = &effect->hweffect->effect;
 if (SDL_SYS_ToFFEffect( linux_effect, base ) != 0) {
-return -1;
+goto new_effect_err;
 }
 linux_effect->id = -1; /* Have the kernel give it an id */
 /* Upload the effect */
 if (ioctl(haptic->hwdata->fd, EVIOCSFF, linux_effect) < 0) {
 SDL_SetError("Error uploading effect to the haptic device.");
-return -1;
+goto new_effect_err;
 }
 return 0;
+new_effect_err:
+free(effect->hweffect);
+effect->hweffect = NULL;
+return -1;
+}
+/*
+* Updates an effect.
+*
+* Note: Dynamically updating the direction can in some cases force
+* the effect to restart and run once.
+*/
+int SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
+struct haptic_effect * effect, SDL_HapticEffect * data)
+{
+struct ff_effect linux_effect;
+/* Create the new effect */
+if (SDL_SYS_ToFFEffect( &linux_effect, data ) != 0) {
+return -1;
+}
+linux_effect.id = effect->hweffect->effect.id;
+/* See if it can be uploaded. */
+if (ioctl(haptic->hwdata->fd, EVIOCSFF, &linux_effect) < 0) {
+SDL_SetError("Error updating the haptic effect.");
+return -1;
+}
+/* Copy the new effect into memory. */
+SDL_memcpy( &effect->hweffect->effect, &linux_effect, sizeof(struct ff_effect) );
+return effect->hweffect->effect.id;
 }
 /*
 * Runs an effect.

Mercurial > sdl-ios-xcode