Files
archived-hidapi/libusb/hidapi_libusb.h
Ihor Dutchak aaf5f3d172 add libusb-specific hid_libusb_wrap_sys_device
Rationale: on Android one must use UsbManager, to access any
USB device. As a result, libraries like libusb can only use file descriptors
that are provided by UsbManager.
libusb has an API to use such file descriptors: hid_libusb_wrap_sys_device.
Having hid_libusb_wrap_sys_device currently is the only way to make hidapi
work on Android without root access and without custom Android builds.

Relevant info: https://github.com/libusb/libusb/pull/830/files
2021-09-18 18:56:56 +03:00

55 lines
1.6 KiB
C

/*******************************************************
HIDAPI - Multi-Platform library for
communication with HID devices.
libusb/hidapi Team
Copyright 2021, 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:
https://github.com/libusb/hidapi .
********************************************************/
/** @file
* @defgroup API hidapi API
*/
#ifndef HIDAPI_LIBUSB_H__
#define HIDAPI_LIBUSB_H__
#include <stdint.h>
#include "hidapi.h"
#ifdef __cplusplus
extern "C" {
#endif
/** @brief Open a HID device using libusb_wrap_sys_device.
See https://libusb.sourceforge.io/api-1.0/group__libusb__dev.html#ga98f783e115ceff4eaf88a60e6439563c,
for details on libusb_wrap_sys_device.
@ingroup API
@param sys_dev Platform-specific file descriptor that can be recognised by libusb.
@param interface_num USB interface number of the device to be used as HID interface.
Pass -1 to select first HID interface of the device.
@returns
This function returns a pointer to a #hid_device object on
success or NULL on failure.
*/
HID_API_EXPORT hid_device * HID_API_CALL hid_libusb_wrap_sys_device(intptr_t sys_dev, int interface_num);
#ifdef __cplusplus
}
#endif
#endif