diff options
Diffstat (limited to 'gr-fcd/lib/hid/hid-libusb.c')
| -rw-r--r-- | gr-fcd/lib/hid/hid-libusb.c | 1386 |
1 files changed, 0 insertions, 1386 deletions
diff --git a/gr-fcd/lib/hid/hid-libusb.c b/gr-fcd/lib/hid/hid-libusb.c deleted file mode 100644 index 82cbc9151..000000000 --- a/gr-fcd/lib/hid/hid-libusb.c +++ /dev/null @@ -1,1386 +0,0 @@ -/******************************************************* - HIDAPI - Multi-Platform library for - communication with HID devices. - - Alan Ott - Signal 11 Software - - 8/22/2009 - Linux Version - 6/2/2010 - Libusb Version - 8/13/2010 - - Copyright 2009, All Rights Reserved. - - At the discretion of the user of this library, - this software may be licensed under the terms of the - GNU Public License v3, a BSD-Style license, or the - original HIDAPI license as outlined in the LICENSE.txt, - LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt - files located at the root of the source distribution. - These files may also be found in the public source - code repository located at: - http://github.com/signal11/hidapi . -********************************************************/ - -#define _GNU_SOURCE // needed for wcsdup() before glibc 2.10 - -/* C */ -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <ctype.h> -#include <locale.h> -#include <errno.h> - -/* Unix */ -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/ioctl.h> -#include <sys/utsname.h> -#include <fcntl.h> -#include <pthread.h> -#include <wchar.h> - -/* GNU / LibUSB */ -#include "libusb.h" -#include "iconv.h" - -#include "hidapi.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef DEBUG_PRINTF -#define LOG(...) fprintf(stderr, __VA_ARGS__) -#else -#define LOG(...) do {} while (0) -#endif - - -/* Uncomment to enable the retrieval of Usage and Usage Page in -hid_enumerate(). Warning, this is very invasive as it requires the detach -and re-attach of the kernel driver. See comments inside hid_enumerate(). -Linux/libusb HIDAPI programs are encouraged to use the interface number -instead to differentiate between interfaces on a composite HID device. */ -/*#define INVASIVE_GET_USAGE*/ - -/* Linked List of input reports received from the device. */ -struct input_report { - uint8_t *data; - size_t len; - struct input_report *next; -}; - - -struct hid_device_ { - /* Handle to the actual device. */ - libusb_device_handle *device_handle; - - /* Endpoint information */ - int input_endpoint; - int output_endpoint; - int input_ep_max_packet_size; - - /* The interface number of the HID */ - int interface; - - /* Indexes of Strings */ - int manufacturer_index; - int product_index; - int serial_index; - - /* Whether blocking reads are used */ - int blocking; /* boolean */ - - /* Read thread objects */ - pthread_t thread; - pthread_mutex_t mutex; /* Protects input_reports */ - pthread_cond_t condition; - pthread_barrier_t barrier; /* Ensures correct startup sequence */ - int shutdown_thread; - struct libusb_transfer *transfer; - - /* List of received input reports. */ - struct input_report *input_reports; -}; - -static int initialized = 0; - -uint16_t get_usb_code_for_current_locale(void); -static int return_data(hid_device *dev, unsigned char *data, size_t length); - -static hid_device *new_hid_device(void) -{ - hid_device *dev = calloc(1, sizeof(hid_device)); - dev->device_handle = NULL; - dev->input_endpoint = 0; - dev->output_endpoint = 0; - dev->input_ep_max_packet_size = 0; - dev->interface = 0; - dev->manufacturer_index = 0; - dev->product_index = 0; - dev->serial_index = 0; - dev->blocking = 1; - dev->shutdown_thread = 0; - dev->transfer = NULL; - dev->input_reports = NULL; - - pthread_mutex_init(&dev->mutex, NULL); - pthread_cond_init(&dev->condition, NULL); - pthread_barrier_init(&dev->barrier, NULL, 2); - - return dev; -} - -static void free_hid_device(hid_device *dev) -{ - /* Clean up the thread objects */ - pthread_barrier_destroy(&dev->barrier); - pthread_cond_destroy(&dev->condition); - pthread_mutex_destroy(&dev->mutex); - - /* Free the device itself */ - free(dev); -} - -#if 0 -//TODO: Implement this funciton on Linux. -static void register_error(hid_device *device, const char *op) -{ - -} -#endif - -#ifdef INVASIVE_GET_USAGE -/* Get bytes from a HID Report Descriptor. - Only call with a num_bytes of 0, 1, 2, or 4. */ -static uint32_t get_bytes(uint8_t *rpt, size_t len, size_t num_bytes, size_t cur) -{ - /* Return if there aren't enough bytes. */ - if (cur + num_bytes >= len) - return 0; - - if (num_bytes == 0) - return 0; - else if (num_bytes == 1) { - return rpt[cur+1]; - } - else if (num_bytes == 2) { - return (rpt[cur+2] * 256 + rpt[cur+1]); - } - else if (num_bytes == 4) { - return (rpt[cur+4] * 0x01000000 + - rpt[cur+3] * 0x00010000 + - rpt[cur+2] * 0x00000100 + - rpt[cur+1] * 0x00000001); - } - else - return 0; -} - -/* Retrieves the device's Usage Page and Usage from the report - descriptor. The algorithm is simple, as it just returns the first - Usage and Usage Page that it finds in the descriptor. - The return value is 0 on success and -1 on failure. */ -static int get_usage(uint8_t *report_descriptor, size_t size, - unsigned short *usage_page, unsigned short *usage) -{ - int i = 0; - int size_code; - int data_len, key_size; - int usage_found = 0, usage_page_found = 0; - - while (i < size) { - int key = report_descriptor[i]; - int key_cmd = key & 0xfc; - - //printf("key: %02hhx\n", key); - - if ((key & 0xf0) == 0xf0) { - /* This is a Long Item. The next byte contains the - length of the data section (value) for this key. - See the HID specification, version 1.11, section - 6.2.2.3, titled "Long Items." */ - if (i+1 < size) - data_len = report_descriptor[i+1]; - else - data_len = 0; /* malformed report */ - key_size = 3; - } - else { - /* This is a Short Item. The bottom two bits of the - key contain the size code for the data section - (value) for this key. Refer to the HID - specification, version 1.11, section 6.2.2.2, - titled "Short Items." */ - size_code = key & 0x3; - switch (size_code) { - case 0: - case 1: - case 2: - data_len = size_code; - break; - case 3: - data_len = 4; - break; - default: - /* Can't ever happen since size_code is & 0x3 */ - data_len = 0; - break; - }; - key_size = 1; - } - - if (key_cmd == 0x4) { - *usage_page = get_bytes(report_descriptor, size, data_len, i); - usage_page_found = 1; - //printf("Usage Page: %x\n", (uint32_t)*usage_page); - } - if (key_cmd == 0x8) { - *usage = get_bytes(report_descriptor, size, data_len, i); - usage_found = 1; - //printf("Usage: %x\n", (uint32_t)*usage); - } - - if (usage_page_found && usage_found) - return 0; /* success */ - - /* Skip over this key and it's associated data */ - i += data_len + key_size; - } - - return -1; /* failure */ -} -#endif // INVASIVE_GET_USAGE - - -/* Get the first language the device says it reports. This comes from - USB string #0. */ -static uint16_t get_first_language(libusb_device_handle *dev) -{ - uint16_t buf[32]; - int len; - - /* Get the string from libusb. */ - len = libusb_get_string_descriptor(dev, - 0x0, /* String ID */ - 0x0, /* Language */ - (unsigned char*)buf, - sizeof(buf)); - if (len < 4) - return 0x0; - - return buf[1]; // First two bytes are len and descriptor type. -} - -static int is_language_supported(libusb_device_handle *dev, uint16_t lang) -{ - uint16_t buf[32]; - int len; - int i; - - /* Get the string from libusb. */ - len = libusb_get_string_descriptor(dev, - 0x0, /* String ID */ - 0x0, /* Language */ - (unsigned char*)buf, - sizeof(buf)); - if (len < 4) - return 0x0; - - - len /= 2; /* language IDs are two-bytes each. */ - /* Start at index 1 because there are two bytes of protocol data. */ - for (i = 1; i < len; i++) { - if (buf[i] == lang) - return 1; - } - - return 0; -} - - -/* This function returns a newly allocated wide string containing the USB - device string numbered by the index. The returned string must be freed - by using free(). */ -static wchar_t *get_usb_string(libusb_device_handle *dev, uint8_t idx) -{ - char buf[512]; - unsigned int len; - wchar_t *str = NULL; - wchar_t wbuf[256]; - - /* iconv variables */ - iconv_t ic; - size_t inbytes; - size_t outbytes; - size_t res; - char *inptr; - char *outptr; - - /* Determine which language to use. */ - uint16_t lang; - lang = get_usb_code_for_current_locale(); - if (!is_language_supported(dev, lang)) - lang = get_first_language(dev); - - /* Get the string from libusb. */ - len = libusb_get_string_descriptor(dev, - idx, - lang, - (unsigned char*)buf, - sizeof(buf)); - if (len < 0) - return NULL; - - buf[sizeof(buf)-1] = '\0'; - - if (len+1 < sizeof(buf)) - buf[len+1] = '\0'; - - /* Initialize iconv. */ - ic = iconv_open("UTF-32", "UTF-16"); - if (ic == (iconv_t)-1) - return NULL; - - /* Convert to UTF-32 (wchar_t on glibc systems). - Skip the first character (2-bytes). */ - inptr = buf+2; - inbytes = len-2; - outptr = (char*) wbuf; - outbytes = sizeof(wbuf); - res = iconv(ic, &inptr, &inbytes, &outptr, &outbytes); - if (res == (size_t)-1) - goto err; - - /* Write the terminating NULL. */ - wbuf[sizeof(wbuf)/sizeof(wbuf[0])-1] = 0x00000000; - if (outbytes >= sizeof(wbuf[0])) - *((wchar_t*)outptr) = 0x00000000; - - /* Allocate and copy the string. */ - str = wcsdup(wbuf+1); - -err: - iconv_close(ic); - - return str; -} - -static char *make_path(libusb_device *dev, int interface_number) -{ - char str[64]; - snprintf(str, sizeof(str), "%04x:%04x:%02x", - libusb_get_bus_number(dev), - libusb_get_device_address(dev), - interface_number); - str[sizeof(str)-1] = '\0'; - - return strdup(str); -} - - -int HID_API_EXPORT hid_init(void) -{ - if (!initialized) { - if (libusb_init(NULL)) - return -1; - initialized = 1; - } - - return 0; -} - -int HID_API_EXPORT hid_exit(void) -{ - if (initialized) { - libusb_exit(NULL); - initialized = 0; - } - - return 0; -} - -struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id, unsigned short product_id) -{ - libusb_device **devs; - libusb_device *dev; - libusb_device_handle *handle; - ssize_t num_devs; - int i = 0; - - struct hid_device_info *root = NULL; // return object - struct hid_device_info *cur_dev = NULL; - - setlocale(LC_ALL,""); - - if (!initialized) - hid_init(); - - num_devs = libusb_get_device_list(NULL, &devs); - if (num_devs < 0) - return NULL; - while ((dev = devs[i++]) != NULL) { - struct libusb_device_descriptor desc; - struct libusb_config_descriptor *conf_desc = NULL; - int j, k; - int interface_num = 0; - - int res = libusb_get_device_descriptor(dev, &desc); - unsigned short dev_vid = desc.idVendor; - unsigned short dev_pid = desc.idProduct; - - /* HID's are defined at the interface level. */ - if (desc.bDeviceClass != LIBUSB_CLASS_PER_INTERFACE) - continue; - - res = libusb_get_active_config_descriptor(dev, &conf_desc); - if (res < 0) - libusb_get_config_descriptor(dev, 0, &conf_desc); - if (conf_desc) { - 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) { - interface_num = intf_desc->bInterfaceNumber; - - /* 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; - - /* VID/PID match. Create the record. */ - tmp = calloc(1, sizeof(struct hid_device_info)); - if (cur_dev) { - cur_dev->next = tmp; - } - else { - root = tmp; - } - cur_dev = tmp; - - /* Fill out the record */ - cur_dev->next = NULL; - cur_dev->path = make_path(dev, interface_num); - - res = libusb_open(dev, &handle); - - if (res >= 0) { - /* Serial Number */ - if (desc.iSerialNumber > 0) - cur_dev->serial_number = - get_usb_string(handle, desc.iSerialNumber); - - /* Manufacturer and Product strings */ - if (desc.iManufacturer > 0) - cur_dev->manufacturer_string = - get_usb_string(handle, desc.iManufacturer); - if (desc.iProduct > 0) - cur_dev->product_string = - get_usb_string(handle, desc.iProduct); - -#ifdef INVASIVE_GET_USAGE - /* - This section is removed because it is too - invasive on the system. Getting a Usage Page - and Usage requires parsing the HID Report - descriptor. Getting a HID Report descriptor - involves claiming the interface. Claiming the - interface involves detaching the kernel driver. - Detaching the kernel driver is hard on the system - because it will unclaim interfaces (if another - app has them claimed) and the re-attachment of - the driver will sometimes change /dev entry names. - It is for these reasons that this section is - #if 0. For composite devices, use the interface - field in the hid_device_info struct to distinguish - between interfaces. */ - int detached = 0; - unsigned char data[256]; - - /* Usage Page and Usage */ - res = libusb_kernel_driver_active(handle, interface_num); - if (res == 1) { - res = libusb_detach_kernel_driver(handle, interface_num); - if (res < 0) - LOG("Couldn't detach kernel driver, even though a kernel driver was attached."); - else - detached = 1; - } - res = libusb_claim_interface(handle, interface_num); - if (res >= 0) { - /* Get the HID Report Descriptor. */ - res = libusb_control_transfer(handle, LIBUSB_ENDPOINT_IN|LIBUSB_RECIPIENT_INTERFACE, LIBUSB_REQUEST_GET_DESCRIPTOR, (LIBUSB_DT_REPORT << 8)|interface_num, 0, data, sizeof(data), 5000); - if (res >= 0) { - unsigned short page=0, usage=0; - /* Parse the usage and usage page - out of the report descriptor. */ - get_usage(data, res, &page, &usage); - cur_dev->usage_page = page; - cur_dev->usage = usage; - } - else - LOG("libusb_control_transfer() for getting the HID report failed with %d\n", res); - - /* Release the interface */ - res = libusb_release_interface(handle, interface_num); - if (res < 0) - LOG("Can't release the interface.\n"); - } - else - LOG("Can't claim interface %d\n", res); - - /* Re-attach kernel driver if necessary. */ - if (detached) { - res = libusb_attach_kernel_driver(handle, interface_num); - if (res < 0) - LOG("Couldn't re-attach kernel driver.\n"); - } -#endif /*******************/ - - libusb_close(handle); - } - /* VID/PID */ - cur_dev->vendor_id = dev_vid; - cur_dev->product_id = dev_pid; - - /* Release Number */ - cur_dev->release_number = desc.bcdDevice; - - /* Interface Number */ - cur_dev->interface_number = interface_num; - } - } - } /* altsettings */ - } /* interfaces */ - libusb_free_config_descriptor(conf_desc); - } - } - - libusb_free_device_list(devs, 1); - - return root; -} - -void HID_API_EXPORT hid_free_enumeration(struct hid_device_info *devs) -{ - struct hid_device_info *d = devs; - while (d) { - struct hid_device_info *next = d->next; - free(d->path); - free(d->serial_number); - free(d->manufacturer_string); - free(d->product_string); - free(d); - d = next; - } -} - -hid_device * hid_open(unsigned short vendor_id, unsigned short product_id, wchar_t *serial_number) -{ - struct hid_device_info *devs, *cur_dev; - const char *path_to_open = NULL; - hid_device *handle = NULL; - - devs = hid_enumerate(vendor_id, product_id); - cur_dev = devs; - while (cur_dev) { - if (cur_dev->vendor_id == vendor_id && - cur_dev->product_id == product_id) { - if (serial_number) { - if (wcscmp(serial_number, cur_dev->serial_number) == 0) { - path_to_open = cur_dev->path; - break; - } - } - else { - path_to_open = cur_dev->path; - break; - } - } - cur_dev = cur_dev->next; - } - - if (path_to_open) { - /* Open the device */ - handle = hid_open_path(path_to_open); - } - - hid_free_enumeration(devs); - - return handle; -} - -static void read_callback(struct libusb_transfer *transfer) -{ - hid_device *dev = transfer->user_data; - - if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { - - struct input_report *rpt = malloc(sizeof(*rpt)); - rpt->data = malloc(transfer->actual_length); - memcpy(rpt->data, transfer->buffer, transfer->actual_length); - rpt->len = transfer->actual_length; - rpt->next = NULL; - - pthread_mutex_lock(&dev->mutex); - - /* Attach the new report object to the end of the list. */ - if (dev->input_reports == NULL) { - /* The list is empty. Put it at the root. */ - dev->input_reports = rpt; - pthread_cond_signal(&dev->condition); - } - else { - /* Find the end of the list and attach. */ - struct input_report *cur = dev->input_reports; - int num_queued = 0; - while (cur->next != NULL) { - cur = cur->next; - num_queued++; - } - cur->next = rpt; - - /* Pop one off if we've reached 30 in the queue. This - way we don't grow forever if the user never reads - anything from the device. */ - if (num_queued > 30) { - return_data(dev, NULL, 0); - } - } - pthread_mutex_unlock(&dev->mutex); - } - else if (transfer->status == LIBUSB_TRANSFER_CANCELLED) { - dev->shutdown_thread = 1; - return; - } - else if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { - dev->shutdown_thread = 1; - return; - } - else if (transfer->status == LIBUSB_TRANSFER_TIMED_OUT) { - //LOG("Timeout (normal)\n"); - } - else { - LOG("Unknown transfer code: %d\n", transfer->status); - } - - /* Re-submit the transfer object. */ - libusb_submit_transfer(transfer); -} - - -static void *read_thread(void *param) -{ - hid_device *dev = param; - unsigned char *buf; - const size_t length = dev->input_ep_max_packet_size; - - /* Set up the transfer object. */ - buf = malloc(length); - dev->transfer = libusb_alloc_transfer(0); - libusb_fill_interrupt_transfer(dev->transfer, - dev->device_handle, - dev->input_endpoint, - buf, - length, - read_callback, - dev, - 5000/*timeout*/); - - /* Make the first submission. Further submissions are made - from inside read_callback() */ - libusb_submit_transfer(dev->transfer); - - // Notify the main thread that the read thread is up and running. - pthread_barrier_wait(&dev->barrier); - - /* Handle all the events. */ - while (!dev->shutdown_thread) { - int res; - res = libusb_handle_events(NULL); - if (res < 0) { - /* There was an error. Break out of this loop. */ - break; - } - } - - /* Cancel any transfer that may be pending. This call will fail - if no transfers are pending, but that's OK. */ - if (libusb_cancel_transfer(dev->transfer) == 0) { - /* The transfer was cancelled, so wait for its completion. */ - libusb_handle_events(NULL); - } - - /* Now that the read thread is stopping, Wake any threads which are - waiting on data (in hid_read_timeout()). Do this under a mutex to - make sure that a thread which is about to go to sleep waiting on - the condition acutally will go to sleep before the condition is - signaled. */ - pthread_mutex_lock(&dev->mutex); - pthread_cond_broadcast(&dev->condition); - pthread_mutex_unlock(&dev->mutex); - - /* The dev->transfer->buffer and dev->transfer objects are cleaned up - in hid_close(). They are not cleaned up here because this thread - could end either due to a disconnect or due to a user - call to hid_close(). In both cases the objects can be safely - cleaned up after the call to pthread_join() (in hid_close()), but - since hid_close() calls libusb_cancel_transfer(), on these objects, - they can not be cleaned up here. */ - - return NULL; -} - - -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; - ssize_t num_devs; - int res; - int d = 0; - int good_open = 0; - - setlocale(LC_ALL,""); - - if (!initialized) - hid_init(); - - num_devs = 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; - } -} - - -int HID_API_EXPORT hid_write(hid_device *dev, const unsigned char *data, size_t length) -{ - int res; - int report_number = data[0]; - int skipped_report_id = 0; - - if (report_number == 0x0) { - data++; - length--; - skipped_report_id = 1; - } - - - if (dev->output_endpoint <= 0) { - /* No interrput out endpoint. Use the Control Endpoint */ - res = libusb_control_transfer(dev->device_handle, - LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_OUT, - 0x09/*HID Set_Report*/, - (2/*HID output*/ << 8) | report_number, - dev->interface, - (unsigned char *)data, length, - 1000/*timeout millis*/); - - if (res < 0) - return -1; - - if (skipped_report_id) - length++; - - return length; - } - else { - /* Use the interrupt out endpoint */ - int actual_length; - res = libusb_interrupt_transfer(dev->device_handle, - dev->output_endpoint, - (unsigned char*)data, - length, - &actual_length, 1000); - - if (res < 0) - return -1; - - if (skipped_report_id) - actual_length++; - - return actual_length; - } -} - -/* Helper function, to simplify hid_read(). - This should be called with dev->mutex locked. */ -static int return_data(hid_device *dev, unsigned char *data, size_t length) -{ - /* Copy the data out of the linked list item (rpt) into the - return buffer (data), and delete the liked list item. */ - struct input_report *rpt = dev->input_reports; - size_t len = (length < rpt->len)? length: rpt->len; - if (len > 0) - memcpy(data, rpt->data, len); - dev->input_reports = rpt->next; - free(rpt->data); - free(rpt); - return len; -} - -static void cleanup_mutex(void *param) -{ - hid_device *dev = param; - pthread_mutex_unlock(&dev->mutex); -} - - -int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds) -{ - int bytes_read = -1; - -#if 0 - int transferred; - int res = libusb_interrupt_transfer(dev->device_handle, dev->input_endpoint, data, length, &transferred, 5000); - LOG("transferred: %d\n", transferred); - return transferred; -#endif - - pthread_mutex_lock(&dev->mutex); - pthread_cleanup_push(&cleanup_mutex, dev); - - /* There's an input report queued up. Return it. */ - if (dev->input_reports) { - /* Return the first one */ - bytes_read = return_data(dev, data, length); - goto ret; - } - - if (dev->shutdown_thread) { - /* This means the device has been disconnected. - An error code of -1 should be returned. */ - bytes_read = -1; - goto ret; - } - - if (milliseconds == -1) { - /* Blocking */ - while (!dev->input_reports && !dev->shutdown_thread) { - pthread_cond_wait(&dev->condition, &dev->mutex); - } - if (dev->input_reports) { - bytes_read = return_data(dev, data, length); - } - } - else if (milliseconds > 0) { - /* Non-blocking, but called with timeout. */ - int res; - struct timespec ts; - clock_gettime(CLOCK_REALTIME, &ts); - ts.tv_sec += milliseconds / 1000; - ts.tv_nsec += (milliseconds % 1000) * 1000000; - if (ts.tv_nsec >= 1000000000L) { - ts.tv_sec++; - ts.tv_nsec -= 1000000000L; - } - - while (!dev->input_reports && !dev->shutdown_thread) { - res = pthread_cond_timedwait(&dev->condition, &dev->mutex, &ts); - if (res == 0) { - if (dev->input_reports) { - bytes_read = return_data(dev, data, length); - break; - } - - /* If we're here, there was a spurious wake up - or the read thread was shutdown. Run the - loop again (ie: don't break). */ - } - else if (res == ETIMEDOUT) { - /* Timed out. */ - bytes_read = 0; - break; - } - else { - /* Error. */ - bytes_read = -1; - break; - } - } - } - else { - /* Purely non-blocking */ - bytes_read = 0; - } - -ret: - pthread_mutex_unlock(&dev->mutex); - pthread_cleanup_pop(0); - - return bytes_read; -} - -int HID_API_EXPORT hid_read(hid_device *dev, unsigned char *data, size_t length) -{ - return hid_read_timeout(dev, data, length, dev->blocking ? -1 : 0); -} - -int HID_API_EXPORT hid_set_nonblocking(hid_device *dev, int nonblock) -{ - dev->blocking = !nonblock; - - return 0; -} - - -int HID_API_EXPORT hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length) -{ - int res = -1; - int skipped_report_id = 0; - int report_number = data[0]; - - if (report_number == 0x0) { - data++; - length--; - skipped_report_id = 1; - } - - res = libusb_control_transfer(dev->device_handle, - LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_OUT, - 0x09/*HID set_report*/, - (3/*HID feature*/ << 8) | report_number, - dev->interface, - (unsigned char *)data, length, - 1000/*timeout millis*/); - - if (res < 0) - return -1; - - /* Account for the report ID */ - if (skipped_report_id) - length++; - - return length; -} - -int HID_API_EXPORT hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length) -{ - int res = -1; - int skipped_report_id = 0; - int report_number = data[0]; - - if (report_number == 0x0) { - /* Offset the return buffer by 1, so that the report ID - will remain in byte 0. */ - data++; - length--; - skipped_report_id = 1; - } - res = libusb_control_transfer(dev->device_handle, - LIBUSB_REQUEST_TYPE_CLASS|LIBUSB_RECIPIENT_INTERFACE|LIBUSB_ENDPOINT_IN, - 0x01/*HID get_report*/, - (3/*HID feature*/ << 8) | report_number, - dev->interface, - (unsigned char *)data, length, - 1000/*timeout millis*/); - - if (res < 0) - return -1; - - if (skipped_report_id) - res++; - - return res; -} - - -void HID_API_EXPORT hid_close(hid_device *dev) -{ - if (!dev) - return; - - /* Cause read_thread() to stop. */ - dev->shutdown_thread = 1; - libusb_cancel_transfer(dev->transfer); - - /* Wait for read_thread() to end. */ - pthread_join(dev->thread, NULL); - - /* Clean up the Transfer objects allocated in read_thread(). */ - free(dev->transfer->buffer); - libusb_free_transfer(dev->transfer); - - /* release the interface */ - libusb_release_interface(dev->device_handle, dev->interface); - - /* Close the handle */ - libusb_close(dev->device_handle); - - /* 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); -} - - -int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return hid_get_indexed_string(dev, dev->manufacturer_index, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return hid_get_indexed_string(dev, dev->product_index, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return hid_get_indexed_string(dev, dev->serial_index, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen) -{ - wchar_t *str; - - str = get_usb_string(dev->device_handle, string_index); - if (str) { - wcsncpy(string, str, maxlen); - string[maxlen-1] = L'\0'; - free(str); - return 0; - } - else - return -1; -} - - -HID_API_EXPORT const wchar_t * HID_API_CALL hid_error(hid_device *dev) -{ - return NULL; -} - - -struct lang_map_entry { - const char *name; - const char *string_code; - uint16_t usb_code; -}; - -#define LANG(name,code,usb_code) { name, code, usb_code } -static struct lang_map_entry lang_map[] = { - LANG("Afrikaans", "af", 0x0436), - LANG("Albanian", "sq", 0x041C), - LANG("Arabic - United Arab Emirates", "ar_ae", 0x3801), - LANG("Arabic - Bahrain", "ar_bh", 0x3C01), - LANG("Arabic - Algeria", "ar_dz", 0x1401), - LANG("Arabic - Egypt", "ar_eg", 0x0C01), - LANG("Arabic - Iraq", "ar_iq", 0x0801), - LANG("Arabic - Jordan", "ar_jo", 0x2C01), - LANG("Arabic - Kuwait", "ar_kw", 0x3401), - LANG("Arabic - Lebanon", "ar_lb", 0x3001), - LANG("Arabic - Libya", "ar_ly", 0x1001), - LANG("Arabic - Morocco", "ar_ma", 0x1801), - LANG("Arabic - Oman", "ar_om", 0x2001), - LANG("Arabic - Qatar", "ar_qa", 0x4001), - LANG("Arabic - Saudi Arabia", "ar_sa", 0x0401), - LANG("Arabic - Syria", "ar_sy", 0x2801), - LANG("Arabic - Tunisia", "ar_tn", 0x1C01), - LANG("Arabic - Yemen", "ar_ye", 0x2401), - LANG("Armenian", "hy", 0x042B), - LANG("Azeri - Latin", "az_az", 0x042C), - LANG("Azeri - Cyrillic", "az_az", 0x082C), - LANG("Basque", "eu", 0x042D), - LANG("Belarusian", "be", 0x0423), - LANG("Bulgarian", "bg", 0x0402), - LANG("Catalan", "ca", 0x0403), - LANG("Chinese - China", "zh_cn", 0x0804), - LANG("Chinese - Hong Kong SAR", "zh_hk", 0x0C04), - LANG("Chinese - Macau SAR", "zh_mo", 0x1404), - LANG("Chinese - Singapore", "zh_sg", 0x1004), - LANG("Chinese - Taiwan", "zh_tw", 0x0404), - LANG("Croatian", "hr", 0x041A), - LANG("Czech", "cs", 0x0405), - LANG("Danish", "da", 0x0406), - LANG("Dutch - Netherlands", "nl_nl", 0x0413), - LANG("Dutch - Belgium", "nl_be", 0x0813), - LANG("English - Australia", "en_au", 0x0C09), - LANG("English - Belize", "en_bz", 0x2809), - LANG("English - Canada", "en_ca", 0x1009), - LANG("English - Caribbean", "en_cb", 0x2409), - LANG("English - Ireland", "en_ie", 0x1809), - LANG("English - Jamaica", "en_jm", 0x2009), - LANG("English - New Zealand", "en_nz", 0x1409), - LANG("English - Phillippines", "en_ph", 0x3409), - LANG("English - Southern Africa", "en_za", 0x1C09), - LANG("English - Trinidad", "en_tt", 0x2C09), - LANG("English - Great Britain", "en_gb", 0x0809), - LANG("English - United States", "en_us", 0x0409), - LANG("Estonian", "et", 0x0425), - LANG("Farsi", "fa", 0x0429), - LANG("Finnish", "fi", 0x040B), - LANG("Faroese", "fo", 0x0438), - LANG("French - France", "fr_fr", 0x040C), - LANG("French - Belgium", "fr_be", 0x080C), - LANG("French - Canada", "fr_ca", 0x0C0C), - LANG("French - Luxembourg", "fr_lu", 0x140C), - LANG("French - Switzerland", "fr_ch", 0x100C), - LANG("Gaelic - Ireland", "gd_ie", 0x083C), - LANG("Gaelic - Scotland", "gd", 0x043C), - LANG("German - Germany", "de_de", 0x0407), - LANG("German - Austria", "de_at", 0x0C07), - LANG("German - Liechtenstein", "de_li", 0x1407), - LANG("German - Luxembourg", "de_lu", 0x1007), - LANG("German - Switzerland", "de_ch", 0x0807), - LANG("Greek", "el", 0x0408), - LANG("Hebrew", "he", 0x040D), - LANG("Hindi", "hi", 0x0439), - LANG("Hungarian", "hu", 0x040E), - LANG("Icelandic", "is", 0x040F), - LANG("Indonesian", "id", 0x0421), - LANG("Italian - Italy", "it_it", 0x0410), - LANG("Italian - Switzerland", "it_ch", 0x0810), - LANG("Japanese", "ja", 0x0411), - LANG("Korean", "ko", 0x0412), - LANG("Latvian", "lv", 0x0426), - LANG("Lithuanian", "lt", 0x0427), - LANG("F.Y.R.O. Macedonia", "mk", 0x042F), - LANG("Malay - Malaysia", "ms_my", 0x043E), - LANG("Malay – Brunei", "ms_bn", 0x083E), - LANG("Maltese", "mt", 0x043A), - LANG("Marathi", "mr", 0x044E), - LANG("Norwegian - Bokml", "no_no", 0x0414), - LANG("Norwegian - Nynorsk", "no_no", 0x0814), - LANG("Polish", "pl", 0x0415), - LANG("Portuguese - Portugal", "pt_pt", 0x0816), - LANG("Portuguese - Brazil", "pt_br", 0x0416), - LANG("Raeto-Romance", "rm", 0x0417), - LANG("Romanian - Romania", "ro", 0x0418), - LANG("Romanian - Republic of Moldova", "ro_mo", 0x0818), - LANG("Russian", "ru", 0x0419), - LANG("Russian - Republic of Moldova", "ru_mo", 0x0819), - LANG("Sanskrit", "sa", 0x044F), - LANG("Serbian - Cyrillic", "sr_sp", 0x0C1A), - LANG("Serbian - Latin", "sr_sp", 0x081A), - LANG("Setsuana", "tn", 0x0432), - LANG("Slovenian", "sl", 0x0424), - LANG("Slovak", "sk", 0x041B), - LANG("Sorbian", "sb", 0x042E), - LANG("Spanish - Spain (Traditional)", "es_es", 0x040A), - LANG("Spanish - Argentina", "es_ar", 0x2C0A), - LANG("Spanish - Bolivia", "es_bo", 0x400A), - LANG("Spanish - Chile", "es_cl", 0x340A), - LANG("Spanish - Colombia", "es_co", 0x240A), - LANG("Spanish - Costa Rica", "es_cr", 0x140A), - LANG("Spanish - Dominican Republic", "es_do", 0x1C0A), - LANG("Spanish - Ecuador", "es_ec", 0x300A), - LANG("Spanish - Guatemala", "es_gt", 0x100A), - LANG("Spanish - Honduras", "es_hn", 0x480A), - LANG("Spanish - Mexico", "es_mx", 0x080A), - LANG("Spanish - Nicaragua", "es_ni", 0x4C0A), - LANG("Spanish - Panama", "es_pa", 0x180A), - LANG("Spanish - Peru", "es_pe", 0x280A), - LANG("Spanish - Puerto Rico", "es_pr", 0x500A), - LANG("Spanish - Paraguay", "es_py", 0x3C0A), - LANG("Spanish - El Salvador", "es_sv", 0x440A), - LANG("Spanish - Uruguay", "es_uy", 0x380A), - LANG("Spanish - Venezuela", "es_ve", 0x200A), - LANG("Southern Sotho", "st", 0x0430), - LANG("Swahili", "sw", 0x0441), - LANG("Swedish - Sweden", "sv_se", 0x041D), - LANG("Swedish - Finland", "sv_fi", 0x081D), - LANG("Tamil", "ta", 0x0449), - LANG("Tatar", "tt", 0X0444), - LANG("Thai", "th", 0x041E), - LANG("Turkish", "tr", 0x041F), - LANG("Tsonga", "ts", 0x0431), - LANG("Ukrainian", "uk", 0x0422), - LANG("Urdu", "ur", 0x0420), - LANG("Uzbek - Cyrillic", "uz_uz", 0x0843), - LANG("Uzbek – Latin", "uz_uz", 0x0443), - LANG("Vietnamese", "vi", 0x042A), - LANG("Xhosa", "xh", 0x0434), - LANG("Yiddish", "yi", 0x043D), - LANG("Zulu", "zu", 0x0435), - LANG(NULL, NULL, 0x0), -}; - -uint16_t get_usb_code_for_current_locale(void) -{ - char *locale; - char search_string[64]; - char *ptr; - - /* Get the current locale. */ - locale = setlocale(0, NULL); - if (!locale) - return 0x0; - - /* Make a copy of the current locale string. */ - strncpy(search_string, locale, sizeof(search_string)); - search_string[sizeof(search_string)-1] = '\0'; - - /* Chop off the encoding part, and make it lower case. */ - ptr = search_string; - while (*ptr) { - *ptr = tolower(*ptr); - if (*ptr == '.') { - *ptr = '\0'; - break; - } - ptr++; - } - - /* Find the entry which matches the string code of our locale. */ - struct lang_map_entry *lang = lang_map; - while (lang->string_code) { - if (!strcmp(lang->string_code, search_string)) { - return lang->usb_code; - } - lang++; - } - - /* There was no match. Find with just the language only. */ - /* Chop off the variant. Chop it off at the '_'. */ - ptr = search_string; - while (*ptr) { - *ptr = tolower(*ptr); - if (*ptr == '_') { - *ptr = '\0'; - break; - } - ptr++; - } - -#if 0 // TODO: Do we need this? - /* Find the entry which matches the string code of our language. */ - lang = lang_map; - while (lang->string_code) { - if (!strcmp(lang->string_code, search_string)) { - return lang->usb_code; - } - lang++; - } -#endif - - /* Found nothing. */ - return 0x0; -} - -#ifdef __cplusplus -} -#endif |