149 lines
5.1 KiB
C
149 lines
5.1 KiB
C
/*!
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* @file libhid.h
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* @brief HID Library - User API
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*
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* @author Copyright (C) 2003 - 2007
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* Arnaud Quette <arnaud.quette@free.fr> && <arnaud.quette@mgeups.com>
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* Charles Lepple <clepple@ghz.cc>
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* Peter Selinger <selinger@users.sourceforge.net>
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* Arjen de Korte <adkorte-guest@alioth.debian.org>
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*
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* This program is sponsored by MGE UPS SYSTEMS - opensource.mgeups.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* -------------------------------------------------------------------------- */
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#ifndef _LIBHID_H
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#define _LIBHID_H
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#include "config.h"
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#include <sys/types.h>
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#include "hidtypes.h"
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#include "timehead.h"
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#ifdef SHUT_MODE
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#include "libshut.h"
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typedef SHUTDevice_t HIDDevice_t;
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typedef char HIDDeviceMatcher_t;
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typedef int hid_dev_handle_t;
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typedef shut_communication_subdriver_t communication_subdriver_t;
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#else
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#include "libusb.h"
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typedef USBDevice_t HIDDevice_t;
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typedef USBDeviceMatcher_t HIDDeviceMatcher_t;
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typedef usb_dev_handle * hid_dev_handle_t;
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typedef usb_communication_subdriver_t communication_subdriver_t;
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#endif
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/* use explicit booleans */
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#ifndef FALSE
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typedef enum ebool { FALSE, TRUE } bool_t;
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#else
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typedef int bool_t;
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#endif
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/* Device open modes */
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#define MODE_OPEN 0 /* open a HID device for the first time */
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#define MODE_REOPEN 1 /* reopen a HID device that was opened before */
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#define MAX_TS 2 /* validity period of a gotten report (2 sec) */
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/* ---------------------------------------------------------------------- */
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/* structure to describe an item in a usage table */
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typedef struct {
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const char *usage_name;
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const HIDNode_t usage_code;
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} usage_lkp_t;
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extern usage_lkp_t hid_usage_lkp[];
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/* an object of type usage_tables_t is a NULL-terminated array of
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* pointers to individual usage tables. */
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typedef usage_lkp_t *usage_tables_t;
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extern communication_subdriver_t *comm_driver;
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extern HIDDesc_t *pDesc; /* parsed Report Descriptor */
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/* report buffer structure: holds data about most recent report for
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each given report id */
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typedef struct reportbuf_s {
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time_t ts[256]; /* timestamp when report was retrieved */
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int len[256]; /* size of report data */
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unsigned char *data[256]; /* report data (allocated) */
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} reportbuf_t;
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extern reportbuf_t *reportbuf; /* buffer for most recent reports */
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/* ---------------------------------------------------------------------- */
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/*
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* HIDGetItemValue
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* -------------------------------------------------------------------------- */
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int HIDGetItemValue(hid_dev_handle_t udev, const char *hidpath, double *Value, usage_tables_t *utab);
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/*
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* HIDGetItemString
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* -------------------------------------------------------------------------- */
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char *HIDGetItemString(hid_dev_handle_t udev, const char *hidpath, char *buf, size_t buflen, usage_tables_t *utab);
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/*
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* HIDSetItemValue
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* -------------------------------------------------------------------------- */
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bool_t HIDSetItemValue(hid_dev_handle_t udev, const char *hidpath, double value, usage_tables_t *utab);
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/*
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* GetItemData
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* -------------------------------------------------------------------------- */
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HIDData_t *HIDGetItemData(const char *hidpath, usage_tables_t *utab);
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/*
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* GetDataItem
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* -------------------------------------------------------------------------- */
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char *HIDGetDataItem(const HIDData_t *hiddata, usage_tables_t *utab);
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/*
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* HIDGetDataValue
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* -------------------------------------------------------------------------- */
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int HIDGetDataValue(hid_dev_handle_t udev, HIDData_t *hiddata, double *Value, int age);
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/*
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* HIDSetDataValue
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* -------------------------------------------------------------------------- */
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int HIDSetDataValue(hid_dev_handle_t udev, HIDData_t *hiddata, double Value);
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/*
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* HIDGetIndexString
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* -------------------------------------------------------------------------- */
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char *HIDGetIndexString(hid_dev_handle_t udev, int Index, char *buf, size_t buflen);
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/*
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* HIDGetEvents
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* -------------------------------------------------------------------------- */
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int HIDGetEvents(hid_dev_handle_t udev, HIDData_t **event, int eventlen);
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/*
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* Support functions
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* -------------------------------------------------------------------------- */
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void HIDDumpTree(hid_dev_handle_t udev, usage_tables_t *utab);
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const char *HIDDataType(const HIDData_t *hiddata);
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void free_report_buffer(reportbuf_t *rbuf);
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reportbuf_t *new_report_buffer(HIDDesc_t *pDesc);
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#endif /* _LIBHID_H */
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