1517 lines
41 KiB
C
1517 lines
41 KiB
C
--- src/hidapi/libusb/hid.c.orig 2020-03-31 19:30:48 UTC
|
||
+++ src/hidapi/libusb/hid.c
|
||
@@ -0,0 +1,1514 @@
|
||
+/*******************************************************
|
||
+ 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
|
||
+ FreeBSD Version - 11/1/2011
|
||
+
|
||
+ 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 General 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>
|
||
+#ifndef __ANDROID__
|
||
+#include <iconv.h>
|
||
+#endif
|
||
+
|
||
+#include "hidapi.h"
|
||
+
|
||
+#ifdef __ANDROID__
|
||
+
|
||
+/* Barrier implementation because Android/Bionic don't have pthread_barrier.
|
||
+ This implementation came from Brent Priddy and was posted on
|
||
+ StackOverflow. It is used with his permission. */
|
||
+typedef int pthread_barrierattr_t;
|
||
+typedef struct pthread_barrier {
|
||
+ pthread_mutex_t mutex;
|
||
+ pthread_cond_t cond;
|
||
+ int count;
|
||
+ int trip_count;
|
||
+} pthread_barrier_t;
|
||
+
|
||
+static int pthread_barrier_init(pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned int count)
|
||
+{
|
||
+ if(count == 0) {
|
||
+ errno = EINVAL;
|
||
+ return -1;
|
||
+ }
|
||
+
|
||
+ if(pthread_mutex_init(&barrier->mutex, 0) < 0) {
|
||
+ return -1;
|
||
+ }
|
||
+ if(pthread_cond_init(&barrier->cond, 0) < 0) {
|
||
+ pthread_mutex_destroy(&barrier->mutex);
|
||
+ return -1;
|
||
+ }
|
||
+ barrier->trip_count = count;
|
||
+ barrier->count = 0;
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static int pthread_barrier_destroy(pthread_barrier_t *barrier)
|
||
+{
|
||
+ pthread_cond_destroy(&barrier->cond);
|
||
+ pthread_mutex_destroy(&barrier->mutex);
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+static int pthread_barrier_wait(pthread_barrier_t *barrier)
|
||
+{
|
||
+ pthread_mutex_lock(&barrier->mutex);
|
||
+ ++(barrier->count);
|
||
+ if(barrier->count >= barrier->trip_count)
|
||
+ {
|
||
+ barrier->count = 0;
|
||
+ pthread_cond_broadcast(&barrier->cond);
|
||
+ pthread_mutex_unlock(&barrier->mutex);
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||
+ return 1;
|
||
+ }
|
||
+ else
|
||
+ {
|
||
+ pthread_cond_wait(&barrier->cond, &(barrier->mutex));
|
||
+ pthread_mutex_unlock(&barrier->mutex);
|
||
+ return 0;
|
||
+ }
|
||
+}
|
||
+
|
||
+#endif
|
||
+
|
||
+#ifdef __cplusplus
|
||
+extern "C" {
|
||
+#endif
|
||
+
|
||
+#ifdef DEBUG_PRINTF
|
||
+#define LOG(...) fprintf(stderr, __VA_ARGS__)
|
||
+#else
|
||
+#define LOG(...) do {} while (0)
|
||
+#endif
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||
+
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||
+#ifndef __FreeBSD__
|
||
+#define DETACH_KERNEL_DRIVER
|
||
+#endif
|
||
+
|
||
+/* Uncomment to enable the retrieval of Usage and Usage Page in
|
||
+hid_enumerate(). Warning, on platforms different from FreeBSD
|
||
+this is very invasive as it requires the detach
|
||
+and re-attach of the kernel driver. See comments inside hid_enumerate().
|
||
+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 */
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||
+
|
||
+ /* Read thread objects */
|
||
+ pthread_t thread;
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||
+ pthread_mutex_t mutex; /* Protects input_reports */
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||
+ pthread_cond_t condition;
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||
+ pthread_barrier_t barrier; /* Ensures correct startup sequence */
|
||
+ int shutdown_thread;
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||
+ int cancelled;
|
||
+ struct libusb_transfer *transfer;
|
||
+
|
||
+ /* List of received input reports. */
|
||
+ struct input_report *input_reports;
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||
+};
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||
+
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||
+static libusb_context *usb_context = NULL;
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||
+
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||
+uint16_t get_usb_code_for_current_locale(void);
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||
+static int return_data(hid_device *dev, unsigned char *data, size_t length);
|
||
+
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||
+static hid_device *new_hid_device(void)
|
||
+{
|
||
+ hid_device *dev = calloc(1, sizeof(hid_device));
|
||
+ dev->blocking = 1;
|
||
+
|
||
+ pthread_mutex_init(&dev->mutex, NULL);
|
||
+ pthread_cond_init(&dev->condition, NULL);
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||
+ pthread_barrier_init(&dev->barrier, NULL, 2);
|
||
+
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||
+ return dev;
|
||
+}
|
||
+
|
||
+static void free_hid_device(hid_device *dev)
|
||
+{
|
||
+ /* Clean up the thread objects */
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||
+ pthread_barrier_destroy(&dev->barrier);
|
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+ pthread_cond_destroy(&dev->condition);
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||
+ pthread_mutex_destroy(&dev->mutex);
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||
+
|
||
+ /* Free the device itself */
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||
+ free(dev);
|
||
+}
|
||
+
|
||
+#if 0
|
||
+/*TODO: Implement this funciton on hidapi/libusb.. */
|
||
+static void register_error(hid_device *dev, const char *op)
|
||
+{
|
||
+
|
||
+}
|
||
+#endif
|
||
+
|
||
+#ifdef INVASIVE_GET_USAGE
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||
+/* 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)
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||
+ return 0;
|
||
+
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||
+ if (num_bytes == 0)
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||
+ return 0;
|
||
+ else if (num_bytes == 1) {
|
||
+ return rpt[cur+1];
|
||
+ }
|
||
+ else if (num_bytes == 2) {
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||
+ return (rpt[cur+2] * 256 + rpt[cur+1]);
|
||
+ }
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||
+ else if (num_bytes == 4) {
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||
+ return (rpt[cur+4] * 0x01000000 +
|
||
+ rpt[cur+3] * 0x00010000 +
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||
+ rpt[cur+2] * 0x00000100 +
|
||
+ rpt[cur+1] * 0x00000001);
|
||
+ }
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||
+ else
|
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+ 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. */
|
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+static int get_usage(uint8_t *report_descriptor, size_t size,
|
||
+ unsigned short *usage_page, unsigned short *usage)
|
||
+{
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||
+ unsigned int i = 0;
|
||
+ int size_code;
|
||
+ int data_len, key_size;
|
||
+ int usage_found = 0, usage_page_found = 0;
|
||
+
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||
+ while (i < size) {
|
||
+ int key = report_descriptor[i];
|
||
+ int key_cmd = key & 0xfc;
|
||
+
|
||
+ //printf("key: %02hhx\n", key);
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||
+
|
||
+ 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
|
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+ 6.2.2.3, titled "Long Items." */
|
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+ if (i+1 < size)
|
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+ 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
|
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+ (value) for this key. Refer to the HID
|
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+ specification, version 1.11, section 6.2.2.2,
|
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+ titled "Short Items." */
|
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+ size_code = key & 0x3;
|
||
+ switch (size_code) {
|
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+ case 0:
|
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+ case 1:
|
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+ case 2:
|
||
+ data_len = size_code;
|
||
+ break;
|
||
+ case 3:
|
||
+ data_len = 4;
|
||
+ break;
|
||
+ default:
|
||
+ /* Can't ever happen since size_code is & 0x3 */
|
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+ data_len = 0;
|
||
+ break;
|
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+ };
|
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+ key_size = 1;
|
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+ }
|
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+
|
||
+ if (key_cmd == 0x4) {
|
||
+ *usage_page = get_bytes(report_descriptor, size, data_len, i);
|
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+ usage_page_found = 1;
|
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+ //printf("Usage Page: %x\n", (uint32_t)*usage_page);
|
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+ }
|
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+ if (key_cmd == 0x8) {
|
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+ *usage = get_bytes(report_descriptor, size, data_len, i);
|
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+ usage_found = 1;
|
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+ //printf("Usage: %x\n", (uint32_t)*usage);
|
||
+ }
|
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+
|
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+ if (usage_page_found && usage_found)
|
||
+ return 0; /* success */
|
||
+
|
||
+ /* Skip over this key and it's associated data */
|
||
+ i += data_len + key_size;
|
||
+ }
|
||
+
|
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+ return -1; /* failure */
|
||
+}
|
||
+#endif /* INVASIVE_GET_USAGE */
|
||
+
|
||
+#if defined(__FreeBSD__) && __FreeBSD__ < 10
|
||
+/* The libusb version included in FreeBSD < 10 doesn't have this function. In
|
||
+ mainline libusb, it's inlined in libusb.h. This function will bear a striking
|
||
+ resemblance to that one, because there's about one way to code it.
|
||
+
|
||
+ Note that the data parameter is Unicode in UTF-16LE encoding.
|
||
+ Return value is the number of bytes in data, or LIBUSB_ERROR_*.
|
||
+ */
|
||
+static inline int libusb_get_string_descriptor(libusb_device_handle *dev,
|
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+ uint8_t descriptor_index, uint16_t lang_id,
|
||
+ unsigned char *data, int length)
|
||
+{
|
||
+ return libusb_control_transfer(dev,
|
||
+ LIBUSB_ENDPOINT_IN | 0x0, /* Endpoint 0 IN */
|
||
+ LIBUSB_REQUEST_GET_DESCRIPTOR,
|
||
+ (LIBUSB_DT_STRING << 8) | descriptor_index,
|
||
+ lang_id, data, (uint16_t) length, 1000);
|
||
+}
|
||
+
|
||
+#endif
|
||
+
|
||
+
|
||
+/* 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];
|
||
+ int len;
|
||
+ wchar_t *str = NULL;
|
||
+
|
||
+#ifndef __ANDROID__ /* we don't use iconv on Android */
|
||
+ wchar_t wbuf[256];
|
||
+ /* iconv variables */
|
||
+ iconv_t ic;
|
||
+ size_t inbytes;
|
||
+ size_t outbytes;
|
||
+ size_t res;
|
||
+#ifdef __FreeBSD__
|
||
+ const char *inptr;
|
||
+#else
|
||
+ char *inptr;
|
||
+#endif
|
||
+ char *outptr;
|
||
+#endif
|
||
+
|
||
+ /* 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;
|
||
+
|
||
+#ifdef __ANDROID__
|
||
+
|
||
+ /* Bionic does not have iconv support nor wcsdup() function, so it
|
||
+ has to be done manually. The following code will only work for
|
||
+ code points that can be represented as a single UTF-16 character,
|
||
+ and will incorrectly convert any code points which require more
|
||
+ than one UTF-16 character.
|
||
+
|
||
+ Skip over the first character (2-bytes). */
|
||
+ len -= 2;
|
||
+ str = malloc((len / 2 + 1) * sizeof(wchar_t));
|
||
+ int i;
|
||
+ for (i = 0; i < len / 2; i++) {
|
||
+ str[i] = buf[i * 2 + 2] | (buf[i * 2 + 3] << 8);
|
||
+ }
|
||
+ str[len / 2] = 0x00000000;
|
||
+
|
||
+#else
|
||
+
|
||
+ /* buf does not need to be explicitly NULL-terminated because
|
||
+ it is only passed into iconv() which does not need it. */
|
||
+
|
||
+ /* Initialize iconv. */
|
||
+ ic = iconv_open("WCHAR_T", "UTF-16LE");
|
||
+ if (ic == (iconv_t)-1) {
|
||
+ LOG("iconv_open() failed\n");
|
||
+ return NULL;
|
||
+ }
|
||
+
|
||
+ /* Convert to native wchar_t (UTF-32 on glibc/BSD 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) {
|
||
+ LOG("iconv() failed\n");
|
||
+ 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);
|
||
+
|
||
+err:
|
||
+ iconv_close(ic);
|
||
+
|
||
+#endif
|
||
+
|
||
+ 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 (!usb_context) {
|
||
+ const char *locale;
|
||
+
|
||
+ /* Init Libusb */
|
||
+ if (libusb_init(&usb_context))
|
||
+ return -1;
|
||
+
|
||
+ /* Set the locale if it's not set. */
|
||
+ locale = setlocale(LC_CTYPE, NULL);
|
||
+ if (!locale)
|
||
+ setlocale(LC_CTYPE, "");
|
||
+ }
|
||
+
|
||
+ return 0;
|
||
+}
|
||
+
|
||
+int HID_API_EXPORT hid_exit(void)
|
||
+{
|
||
+ if (usb_context) {
|
||
+ libusb_exit(usb_context);
|
||
+ usb_context = NULL;
|
||
+ }
|
||
+
|
||
+ 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;
|
||
+
|
||
+ if(hid_init() < 0)
|
||
+ return NULL;
|
||
+
|
||
+ num_devs = libusb_get_device_list(usb_context, &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;
|
||
+
|
||
+ 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 || vendor_id == dev_vid) &&
|
||
+ (product_id == 0x0 || 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. */
|
||
+ unsigned char data[256];
|
||
+#ifdef DETACH_KERNEL_DRIVER
|
||
+ int detached = 0;
|
||
+ /* 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;
|
||
+ }
|
||
+#endif
|
||
+ 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);
|
||
+#ifdef DETACH_KERNEL_DRIVER
|
||
+ /* 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
|
||
+}
|
||
+#endif /* INVASIVE_GET_USAGE */
|
||
+
|
||
+ 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, const 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 (cur_dev->serial_number &&
|
||
+ 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;
|
||
+ int res;
|
||
+
|
||
+ 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;
|
||
+ dev->cancelled = 1;
|
||
+ return;
|
||
+ }
|
||
+ else if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
|
||
+ dev->shutdown_thread = 1;
|
||
+ dev->cancelled = 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. */
|
||
+ res = libusb_submit_transfer(transfer);
|
||
+ if (res != 0) {
|
||
+ LOG("Unable to submit URB. libusb error code: %d\n", res);
|
||
+ dev->shutdown_thread = 1;
|
||
+ dev->cancelled = 1;
|
||
+ }
|
||
+}
|
||
+
|
||
+
|
||
+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(usb_context);
|
||
+ if (res < 0) {
|
||
+ /* There was an error. */
|
||
+ LOG("read_thread(): libusb reports error # %d\n", res);
|
||
+
|
||
+ /* Break out of this loop only on fatal error.*/
|
||
+ if (res != LIBUSB_ERROR_BUSY &&
|
||
+ res != LIBUSB_ERROR_TIMEOUT &&
|
||
+ res != LIBUSB_ERROR_OVERFLOW &&
|
||
+ res != LIBUSB_ERROR_INTERRUPTED) {
|
||
+ break;
|
||
+ }
|
||
+ }
|
||
+ }
|
||
+
|
||
+ /* Cancel any transfer that may be pending. This call will fail
|
||
+ if no transfers are pending, but that's OK. */
|
||
+ libusb_cancel_transfer(dev->transfer);
|
||
+
|
||
+ while (!dev->cancelled)
|
||
+ libusb_handle_events_completed(usb_context, &dev->cancelled);
|
||
+
|
||
+ /* 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 actually 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;
|
||
+
|
||
+ libusb_device **devs;
|
||
+ libusb_device *usb_dev;
|
||
+ int res;
|
||
+ int d = 0;
|
||
+ int good_open = 0;
|
||
+
|
||
+ if(hid_init() < 0)
|
||
+ return NULL;
|
||
+
|
||
+ dev = new_hid_device();
|
||
+
|
||
+ libusb_get_device_list(usb_context, &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;
|
||
+#ifdef DETACH_KERNEL_DRIVER
|
||
+ /* 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;
|
||
+ }
|
||
+ }
|
||
+#endif
|
||
+ 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 input 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 interrupt 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;
|
||
+ struct lang_map_entry *lang;
|
||
+
|
||
+ /* 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. */
|
||
+ 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
|