struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
struct hid_device_info *root = NULL; // return object
struct hid_device_info *cur_dev = NULL;
CFIndex num_devices;
int i;
setlocale(LC_ALL,"");
/* Set up the HID Manager if it hasn't been done */
hid_init();
/* Get a list of the Devices */
CFSetRef device_set = IOHIDManagerCopyDevices(hid_mgr);
/* Convert the list into a C array so we can iterate easily. */
num_devices = CFSetGetCount(device_set);
IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef));
CFSetGetValues(device_set, (const void **) device_array);
/* Iterate over each device, making an entry for it. */
for (i = 0; i < num_devices; i++) {
unsigned short dev_vid;
unsigned short dev_pid;
#define BUF_LEN 256
wchar_t buf[BUF_LEN];
char cbuf[BUF_LEN];
IOHIDDeviceRef dev = device_array[i];
if (!dev) {
continue;
}
dev_vid = get_vendor_id(dev);
dev_pid = get_product_id(dev);
/* Check the VID/PID against the arguments */
if ((vendor_id == 0x0 && product_id == 0x0) ||
(vendor_id == dev_vid && product_id == dev_pid)) {
struct hid_device_info *tmp;
size_t len;
/* VID/PID match. Create the record. */
tmp = malloc(sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
// Get the Usage Page and Usage for this device.
cur_dev->usage_page = get_int_property(dev, CFSTR(kIOHIDPrimaryUsagePageKey));
cur_dev->usage = get_int_property(dev, CFSTR(kIOHIDPrimaryUsageKey));
/* Fill out the record */
cur_dev->next = NULL;
len = make_path(dev, cbuf, sizeof(cbuf));
cur_dev->path = strdup(cbuf);
/* Serial Number */
get_serial_number(dev, buf, BUF_LEN);
cur_dev->serial_number = dup_wcs(buf);
/* Manufacturer and Product strings */
get_manufacturer_string(dev, buf, BUF_LEN);
cur_dev->manufacturer_string = dup_wcs(buf);
get_product_string(dev, buf, BUF_LEN);
cur_dev->product_string = dup_wcs(buf);
/* VID/PID */
cur_dev->vendor_id = dev_vid;
cur_dev->product_id = dev_pid;
/* Release Number */
cur_dev->release_number = get_int_property(dev, CFSTR(kIOHIDVersionNumberKey));
/* Interface Number (Unsupported on Mac)*/
cur_dev->interface_number = -1;
}
}
free(device_array);
CFRelease(device_set);
return root;
}
struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
struct hid_device_info *root = NULL; /* return object */
struct hid_device_info *cur_dev = NULL;
CFIndex num_devices;
int i;
/* Set up the HID Manager if it hasn't been done */
if (hid_init() < 0)
return NULL;
/* give the IOHIDManager a chance to update itself */
process_pending_events();
/* Get a list of the Devices */
IOHIDManagerSetDeviceMatching(hid_mgr, NULL);
CFSetRef device_set = IOHIDManagerCopyDevices(hid_mgr);
/* Convert the list into a C array so we can iterate easily. */
num_devices = CFSetGetCount(device_set);
IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef));
CFSetGetValues(device_set, (const void **) device_array);
/* Iterate over each device, making an entry for it. */
for (i = 0; i < num_devices; i++) {
unsigned short dev_vid;
unsigned short dev_pid;
#define BUF_LEN 256
wchar_t buf[BUF_LEN];
IOHIDDeviceRef dev = device_array[i];
if (!dev) {
continue;
}
dev_vid = get_vendor_id(dev);
dev_pid = get_product_id(dev);
/* Check the VID/PID against the arguments */
if ((vendor_id == 0x0 || vendor_id == dev_vid) &&
(product_id == 0x0 || product_id == dev_pid)) {
struct hid_device_info *tmp;
io_object_t iokit_dev;
kern_return_t res;
io_string_t path;
/* VID/PID match. Create the record. */
tmp = malloc(sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Get the Usage Page and Usage for this device. */
cur_dev->usage_page = get_int_property(dev, CFSTR(kIOHIDPrimaryUsagePageKey));
cur_dev->usage = get_int_property(dev, CFSTR(kIOHIDPrimaryUsageKey));
/* Fill out the record */
cur_dev->next = NULL;
/* Fill in the path (IOService plane) */
iokit_dev = hidapi_IOHIDDeviceGetService(dev);
res = IORegistryEntryGetPath(iokit_dev, kIOServicePlane, path);
if (res == KERN_SUCCESS)
cur_dev->path = strdup(path);
else
cur_dev->path = strdup("");
/* Serial Number */
get_serial_number(dev, buf, BUF_LEN);
cur_dev->serial_number = dup_wcs(buf);
/* Manufacturer and Product strings */
get_manufacturer_string(dev, buf, BUF_LEN);
cur_dev->manufacturer_string = dup_wcs(buf);
get_product_string(dev, buf, BUF_LEN);
cur_dev->product_string = dup_wcs(buf);
/* VID/PID */
cur_dev->vendor_id = dev_vid;
cur_dev->product_id = dev_pid;
/* Release Number */
cur_dev->release_number = get_int_property(dev, CFSTR(kIOHIDVersionNumberKey));
/* Interface Number (Unsupported on Mac)*/
cur_dev->interface_number = -1;
}
}
free(device_array);
CFRelease(device_set);
return root;
}
