WearerPtr Wearer::create(DescriptionPtr dsc)
{
/* REMEBER TO UPDATE CLONE, WHEN ADDING NEW ELEMENTS */
WearerPtr w = nullptr;
WearerDescriptionPtr wearerDsc = std::dynamic_pointer_cast<WearerDescription>(dsc);
if ( wearerDsc != nullptr )
{
w.reset( new Wearer );
wearerDsc->eqItems->maxSize = wearerDsc->itemSlots.size();
std::for_each(wearerDsc->itemSlots.begin(), wearerDsc->itemSlots.end(), [&](ItemSlotType slot)
{
w->_itemSlots[slot] = nullptr;
});
w->_equippedItems = Container::create(wearerDsc->eqItems);
if ( w->_equippedItems )
{
assignItemsToSlots( w );
}
}else throw creation_error("Wrong wearer description!");
return w;
}
// create a UInput device and return the file descriptor as a handle
JNIEXPORT jint JNICALL Java_com_endpoint_lg_evdev_writer_UinputDevice_createDevice(JNIEnv *env, jclass cls, jstring uinput_path, jstring dev_name, jint id_vendor, jint id_product, jint version, jintArray abs_min, jintArray abs_max) {
struct uinput_user_dev uidev;
int status;
// open the uinput node at the provided path
const char *nv_uinput_path = env->GetStringUTFChars(uinput_path, 0);
int fd = open(nv_uinput_path, O_WRONLY | O_NONBLOCK);
if (fd < 0) {
#ifdef DEBUG
perror("opening the uinput node");
#endif
return -1;
}
env->ReleaseStringUTFChars(uinput_path, nv_uinput_path);
/*** specify allowed event types and codes ***/
// EV_KEY
status = ioctl(fd, UI_SET_EVBIT, EV_KEY);
if (status != 0)
return creation_error("error activating EV_KEY type");
status = allow_all_codes(fd, UI_SET_KEYBIT, KEY_MAX);
if (status != 0)
return creation_error("error activating EV_KEY codes");
// EV_REL
status = ioctl(fd, UI_SET_EVBIT, EV_REL);
if (status != 0)
return creation_error("error activating EV_REL type");
allow_all_codes(fd, UI_SET_RELBIT, REL_MAX);
if (status != 0)
return creation_error("error activating EV_REL codes");
// EV_ABS
status = ioctl(fd, UI_SET_EVBIT, EV_ABS);
if (status != 0)
return creation_error("error activating EV_ABS type");
allow_all_codes(fd, UI_SET_ABSBIT, ABS_MAX);
if (status != 0)
return creation_error("error activating EV_ABS codes");
// EV_SYN
status = ioctl(fd, UI_SET_EVBIT, EV_SYN);
if (status != 0)
return creation_error("error activating EV_SYN type");
// initialize the user device struct
memset(&uidev, 0, sizeof(uidev));
// set the device name -- grab the string from JVM
const char *nv_dev_name = env->GetStringUTFChars(dev_name, 0);
strncpy(uidev.name, nv_dev_name, UINPUT_MAX_NAME_SIZE);
env->ReleaseStringUTFChars(dev_name, nv_dev_name);
// set more device attributes
uidev.id.bustype = BUS_USB; // XXX: this is a big assumption
uidev.id.vendor = (__u16)id_vendor;
uidev.id.product = (__u16)id_product;
uidev.id.version = (__u16)version;
// set ABS min/max values
copy_native_int_array(env, uidev.absmin, abs_min, ABS_CNT);
copy_native_int_array(env, uidev.absmax, abs_max, ABS_CNT);
// write our device information
status = write(fd, &uidev, sizeof(uidev));
if (status != sizeof(uidev))
return creation_error("error writing uinput_user_dev");
// create the device
status = ioctl(fd, UI_DEV_CREATE);
if (status != 0)
return creation_error("error on ioctl UI_DEV_CREATE");
#ifdef DEBUG
fprintf(
stderr,
"created device: %s vendor: %d product: %d version: %d\n",
uidev.name, uidev.id.vendor, uidev.id.product, uidev.id.version
);
#endif
// fd is now a handle for the user device
return fd;
}
