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/* $OpenBSD: usbhid.h,v 1.9 2021/05/30 19:54:52 jcs Exp $ */
/* $NetBSD: usbhid.h,v 1.1 2001/12/28 17:45:27 augustss Exp $ */
/*
* Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
typedef struct report_desc *report_desc_t;
typedef struct hid_data *hid_data_t;
typedef enum hid_kind {
hid_input, hid_output, hid_feature, hid_collection, hid_endcollection
} hid_kind_t;
typedef struct hid_item {
/* Global */
uint32_t _usage_page;
int32_t logical_minimum;
int32_t logical_maximum;
int32_t physical_minimum;
int32_t physical_maximum;
int32_t unit_exponent;
int32_t unit;
int32_t report_size;
int32_t report_ID;
#define NO_REPORT_ID 0
int32_t report_count;
/* Local */
uint32_t usage;
int32_t usage_minimum;
int32_t usage_maximum;
int32_t designator_index;
int32_t designator_minimum;
int32_t designator_maximum;
int32_t string_index;
int32_t string_minimum;
int32_t string_maximum;
int32_t set_delimiter;
/* Misc */
int32_t collection;
int collevel;
enum hid_kind kind;
uint32_t flags;
/* Location */
uint32_t pos;
/* unused */
struct hid_item *next;
} hid_item_t;
#define HID_PAGE(u) (((u) >> 16) & 0xffff)
#define HID_USAGE(u) ((u) & 0xffff)
/* Obtaining a report descriptor, descr.c: */
report_desc_t hid_get_report_desc(int file);
report_desc_t hid_use_report_desc(unsigned char *data, unsigned int size);
void hid_dispose_report_desc(report_desc_t);
void hid_get_report_desc_data(report_desc_t, uint8_t **, uint32_t *);
/* Parsing of a HID report descriptor, parse.c: */
hid_data_t hid_start_parse(report_desc_t d, int kindset, int id);
void hid_end_parse(hid_data_t s);
int hid_get_item(hid_data_t s, hid_item_t *h);
int hid_report_size(report_desc_t d, enum hid_kind k, int id);
int hid_locate(report_desc_t d, unsigned int usage, enum hid_kind k,
hid_item_t *h, int id);
/* Conversion to/from usage names, usage.c: */
const char *hid_usage_page(int i);
const char *hid_usage_in_page(unsigned int u);
void hid_init(const char *file);
int hid_start(const char *file);
int hid_parse_usage_in_page(const char *name);
int hid_parse_usage_page(const char *name);
/* Extracting/insertion of data, data.c: */
int32_t hid_get_data(const void *p, const hid_item_t *h);
void hid_set_data(void *p, const hid_item_t *h, int32_t data);
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