HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path)
{
hid_device *dev;
HIDP_CAPS caps;
PHIDP_PREPARSED_DATA pp_data = NULL;
BOOLEAN res;
NTSTATUS nt_res;
if (hid_init() < 0) {
return NULL;
}
dev = new_hid_device();
/* Open a handle to the device */
dev->device_handle = open_device(path, FALSE);
/* Check validity of write_handle. */
if (dev->device_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
register_error(dev, "CreateFile");
goto err;
}
/* Set the Input Report buffer size to 64 reports. */
res = HidD_SetNumInputBuffers(dev->device_handle, 64);
if (!res) {
register_error(dev, "HidD_SetNumInputBuffers");
goto err;
}
/* Get the Input Report length for the device. */
res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
if (!res) {
register_error(dev, "HidD_GetPreparsedData");
goto err;
}
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res != HIDP_STATUS_SUCCESS) {
register_error(dev, "HidP_GetCaps");
goto err_pp_data;
}
dev->output_report_length = caps.OutputReportByteLength;
dev->input_report_length = caps.InputReportByteLength;
HidD_FreePreparsedData(pp_data);
dev->read_buf = (char*) malloc(dev->input_report_length);
return dev;
err_pp_data:
HidD_FreePreparsedData(pp_data);
err:
free_hid_device(dev);
return NULL;
}
void HID_API_EXPORT hid_close(hid_device *dev)
{
if (!dev)
return;
/* Close the OS handle to the device, but only if it's not
been unplugged. If it's been unplugged, then calling
IOHIDDeviceClose() will crash. */
if (!dev->disconnected) {
IOHIDDeviceClose(dev->device_handle, kIOHIDOptionsTypeNone);
}
free_hid_device(dev);
}
void HID_API_EXPORT hid_close(hid_device *dev)
{
if ( !dev )
{
return;
}
/* Disconnect the report callback before close. */
if (!dev->disconnected) {
IOHIDDeviceRegisterInputReportCallback(
dev->device_handle, dev->input_report_buf, dev->max_input_report_len,
NULL, dev);
IOHIDManagerRegisterDeviceRemovalCallback(hid_mgr, NULL, dev);
IOHIDDeviceUnscheduleFromRunLoop(dev->device_handle, dev->run_loop, dev->run_loop_mode);
IOHIDDeviceScheduleWithRunLoop(dev->device_handle, CFRunLoopGetMain(), kCFRunLoopDefaultMode);
}
/* Cause read_thread() to stop. */
dev->shutdown_thread = 1;
/* Wake up the run thread's event loop so that the thread can exit. */
CFRunLoopSourceSignal(dev->source);
CFRunLoopWakeUp(dev->run_loop);
/* Notify the read thread that it can shut down now. */
pthread_barrier_wait(&dev->shutdown_barrier);
/* Wait for read_thread() to end. */
pthread_join(dev->thread, NULL);
/* Close the OS handle to the device, but only if it's not
been unplugged. If it's been unplugged, then calling
IOHIDDeviceClose() will crash. */
if (!dev->disconnected) {
IOHIDDeviceClose(dev->device_handle, kIOHIDOptionsTypeNone);
}
/* Clear out the queue of received reports. */
pthread_mutex_lock(&dev->mutex);
while (dev->input_reports) {
return_data(dev, NULL, 0);
}
pthread_mutex_unlock(&dev->mutex);
free_hid_device(dev);
}
hid_device * HID_API_EXPORT hid_open_path(const char *path)
{
hid_device *dev = NULL;
dev = new_hid_device();
libusb_device **devs;
libusb_device *usb_dev;
int res;
int d = 0;
int good_open = 0;
setlocale(LC_ALL,"");
if (!initialized)
hid_init();
libusb_get_device_list(NULL, &devs);
while ((usb_dev = devs[d++]) != NULL) {
struct libusb_device_descriptor desc;
struct libusb_config_descriptor *conf_desc = NULL;
int i,j,k;
libusb_get_device_descriptor(usb_dev, &desc);
if (libusb_get_active_config_descriptor(usb_dev, &conf_desc) < 0)
continue;
for (j = 0; j < conf_desc->bNumInterfaces; j++) {
const struct libusb_interface *intf = &conf_desc->interface[j];
for (k = 0; k < intf->num_altsetting; k++) {
const struct libusb_interface_descriptor *intf_desc;
intf_desc = &intf->altsetting[k];
if (intf_desc->bInterfaceClass == LIBUSB_CLASS_HID) {
char *dev_path = make_path(usb_dev, intf_desc->bInterfaceNumber);
if (!strcmp(dev_path, path)) {
/* Matched Paths. Open this device */
// OPEN HERE //
res = libusb_open(usb_dev, &dev->device_handle);
if (res < 0) {
LOG("can't open device\n");
free(dev_path);
break;
}
good_open = 1;
/* Detach the kernel driver, but only if the
device is managed by the kernel */
if (libusb_kernel_driver_active(dev->device_handle, intf_desc->bInterfaceNumber) == 1) {
res = libusb_detach_kernel_driver(dev->device_handle, intf_desc->bInterfaceNumber);
if (res < 0) {
libusb_close(dev->device_handle);
LOG("Unable to detach Kernel Driver\n");
free(dev_path);
good_open = 0;
break;
}
}
res = libusb_claim_interface(dev->device_handle, intf_desc->bInterfaceNumber);
if (res < 0) {
LOG("can't claim interface %d: %d\n", intf_desc->bInterfaceNumber, res);
free(dev_path);
libusb_close(dev->device_handle);
good_open = 0;
break;
}
/* Store off the string descriptor indexes */
dev->manufacturer_index = desc.iManufacturer;
dev->product_index = desc.iProduct;
dev->serial_index = desc.iSerialNumber;
/* Store off the interface number */
dev->interface = intf_desc->bInterfaceNumber;
/* Find the INPUT and OUTPUT endpoints. An
OUTPUT endpoint is not required. */
for (i = 0; i < intf_desc->bNumEndpoints; i++) {
const struct libusb_endpoint_descriptor *ep
= &intf_desc->endpoint[i];
/* Determine the type and direction of this
endpoint. */
int is_interrupt =
(ep->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK)
== LIBUSB_TRANSFER_TYPE_INTERRUPT;
int is_output =
(ep->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK)
== LIBUSB_ENDPOINT_OUT;
int is_input =
(ep->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK)
== LIBUSB_ENDPOINT_IN;
/* Decide whether to use it for intput or output. */
if (dev->input_endpoint == 0 &&
is_interrupt && is_input) {
/* Use this endpoint for INPUT */
dev->input_endpoint = ep->bEndpointAddress;
dev->input_ep_max_packet_size = ep->wMaxPacketSize;
}
if (dev->output_endpoint == 0 &&
is_interrupt && is_output) {
/* Use this endpoint for OUTPUT */
dev->output_endpoint = ep->bEndpointAddress;
}
}
pthread_create(&dev->thread, NULL, read_thread, dev);
// Wait here for the read thread to be initialized.
pthread_barrier_wait(&dev->barrier);
}
free(dev_path);
}
}
}
libusb_free_config_descriptor(conf_desc);
}
libusb_free_device_list(devs, 1);
// If we have a good handle, return it.
if (good_open) {
return dev;
}
else {
// Unable to open any devices.
free_hid_device(dev);
return NULL;
}
}
hid_device * HID_API_EXPORT hid_open_path(const char *path)
{
int i;
hid_device *dev = NULL;
CFIndex num_devices;
dev = new_hid_device();
/* Set up the HID Manager if it hasn't been done */
hid_init();
CFSetRef device_set = IOHIDManagerCopyDevices(hid_mgr);
num_devices = CFSetGetCount(device_set);
IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef));
CFSetGetValues(device_set, (const void **) device_array);
for (i = 0; i < num_devices; i++) {
char cbuf[BUF_LEN];
size_t len;
IOHIDDeviceRef os_dev = device_array[i];
len = make_path(os_dev, cbuf, sizeof(cbuf));
if (!strcmp(cbuf, path)) {
// Matched Paths. Open this Device.
IOReturn ret = IOHIDDeviceOpen(os_dev, kIOHIDOptionsTypeNone);
if (ret == kIOReturnSuccess) {
char str[32];
free(device_array);
CFRelease(device_set);
dev->device_handle = os_dev;
/* Create the buffers for receiving data */
dev->max_input_report_len = (CFIndex) get_max_report_length(os_dev);
dev->input_report_buf = calloc(dev->max_input_report_len, sizeof(uint8_t));
/* Create the Run Loop Mode for this device.
printing the reference seems to work. */
sprintf(str, "HIDAPI_%p", os_dev);
dev->run_loop_mode =
CFStringCreateWithCString(NULL, str, kCFStringEncodingASCII);
/* Attach the device to a Run Loop */
IOHIDDeviceRegisterInputReportCallback(
os_dev, dev->input_report_buf, dev->max_input_report_len,
&hid_report_callback, dev);
IOHIDManagerRegisterDeviceRemovalCallback(hid_mgr, hid_device_removal_callback, NULL);
/* Start the read thread */
pthread_create(&dev->thread, NULL, read_thread, dev);
/* Wait here for the read thread to be initialized. */
pthread_barrier_wait(&dev->barrier);
return dev;
}
else {
goto return_error;
}
}
}
return_error:
free(device_array);
CFRelease(device_set);
free_hid_device(dev);
return NULL;
}
/* hid_open_path()
*
* path must be a valid path to an IOHIDDevice in the IOService plane
* Example: "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/EHC1@1D,7/AppleUSBEHCI/PLAYSTATION(R)3 Controller@fd120000/IOUSBInterface@0/IOUSBHIDDriver"
*/
hid_device * HID_API_EXPORT hid_open_path(const char *path)
{
hid_device *dev = NULL;
io_registry_entry_t entry = MACH_PORT_NULL;
dev = new_hid_device();
/* Set up the HID Manager if it hasn't been done */
if (hid_init() < 0)
return NULL;
/* Get the IORegistry entry for the given path */
entry = IORegistryEntryFromPath(kIOMasterPortDefault, path);
if (entry == MACH_PORT_NULL) {
/* Path wasn't valid (maybe device was removed?) */
goto return_error;
}
/* Create an IOHIDDevice for the entry */
dev->device_handle = IOHIDDeviceCreate(kCFAllocatorDefault, entry);
if (dev->device_handle == NULL) {
/* Error creating the HID device */
goto return_error;
}
/* Open the IOHIDDevice */
IOReturn ret = IOHIDDeviceOpen(dev->device_handle, kIOHIDOptionsTypeSeizeDevice);
if (ret == kIOReturnSuccess) {
char str[32];
/* Create the buffers for receiving data */
dev->max_input_report_len = (CFIndex) get_max_report_length(dev->device_handle);
dev->input_report_buf = calloc(dev->max_input_report_len, sizeof(uint8_t));
/* Create the Run Loop Mode for this device.
printing the reference seems to work. */
sprintf(str, "HIDAPI_%p", dev->device_handle);
dev->run_loop_mode =
CFStringCreateWithCString(NULL, str, kCFStringEncodingASCII);
/* Attach the device to a Run Loop */
IOHIDDeviceRegisterInputReportCallback(
dev->device_handle, dev->input_report_buf, dev->max_input_report_len,
&hid_report_callback, dev);
IOHIDDeviceRegisterRemovalCallback(dev->device_handle, hid_device_removal_callback, dev);
/* Start the read thread */
pthread_create(&dev->thread, NULL, read_thread, dev);
/* Wait here for the read thread to be initialized. */
pthread_barrier_wait(&dev->barrier);
IOObjectRelease(entry);
return dev;
}
else {
goto return_error;
}
return_error:
if (dev->device_handle != NULL)
CFRelease(dev->device_handle);
if (entry != MACH_PORT_NULL)
IOObjectRelease(entry);
free_hid_device(dev);
return NULL;
}
