IOHIDBase.h   [plain text]

/*
 * Copyright (c) 1999-2008 Apple Computer, Inc.  All Rights Reserved.
 * 
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
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 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#ifndef _IOKIT_HID_IOHIDBASE_H_
#define _IOKIT_HID_IOHIDBASE_H_

#include <IOKit/hid/IOHIDKeys.h>

__BEGIN_DECLS

/*! @typedef IOHIDDeviceRef
	This is the type of a reference to the IOHIDDevice.
*/
typedef struct __IOHIDDevice * IOHIDDeviceRef;

/*! @typedef IOHIDElementRef
	This is the type of a reference to the IOHIDElement.
*/
typedef struct __IOHIDElement * IOHIDElementRef;

/*! @typedef IOHIDValueRef
	This is the type of a reference to the IOHIDValue.
*/
typedef struct __IOHIDValue * IOHIDValueRef;

/*!
  @typedef IOHIDValueScaleType
  @abstract Describes different types of scaling that can be performed on element values.
  @constant kIOHIDValueScaleTypeCalibrated Type for value that is scaled with respect to the calibration properties.
  @constant kIOHIDValueScaleTypePhysical Type for value that is scaled with respect to the physical min and physical max of the element.
*/
enum {
    kIOHIDValueScaleTypeCalibrated,
    kIOHIDValueScaleTypePhysical
};
typedef uint32_t IOHIDValueScaleType;

/*!
    @typedef    IOHIDTransactionDirectionType
    @abstract   Direction for an IOHIDDeviceTransactionInterface.
    @constant   kIOHIDTransactionDirectionTypeInput Transaction direction used for requesting element values from a device. 
    @constant   kIOHIDTransactionDirectionTypeOutput Transaction direction used for dispatching element values to a device. 
*/
enum {
    kIOHIDTransactionDirectionTypeInput,
    kIOHIDTransactionDirectionTypeOutput
};
typedef uint32_t IOHIDTransactionDirectionType;

/*!
    @enum       IOHIDTransactionOption
    @abstract   Options to be used in conjuntion with an IOHIDDeviceTransactionInterface.
    @constant   kIOHIDTransactionOptionDefaultOutputValue Option to set the default element value to be used with an
                IOHIDDeviceTransactionInterface of direction kIOHIDTransactionDirectionTypeOutput. 
*/
enum {
    kIOHIDTransactionOptionDefaultOutputValue = 0x0001
};


/*! @typedef IOHIDCallback
    @discussion Type and arguments of callout C function that is used when a completion routine is called.
    @param context void * pointer to your data, often a pointer to an object.
    @param result Completion result of desired operation.
    @param refcon void * pointer to more data.
    @param sender Interface instance sending the completion routine.
*/
typedef void (*IOHIDCallback)(
                                    void *                  context, 
                                    IOReturn                result, 
                                    void *                  sender);

/*! @typedef IOHIDReportCallback
    @discussion Type and arguments of callout C function that is used when a HID report completion routine is called.
    @param context void * pointer to your data, often a pointer to an object.
    @param result Completion result of desired operation.
    @param refcon void * pointer to more data.
    @param sender Interface instance sending the completion routine.
    @param type The type of the report that was completed.
    @param reportID The ID of the report that was completed.
    @param report Pointer to the buffer containing the contents of the report.
    @param reportLength Size of the buffer received upon completion.
*/
typedef void (*IOHIDReportCallback) (
                                    void *                  context, 
                                    IOReturn                result, 
                                    void *                  sender, 
                                    IOHIDReportType         type, 
                                    uint32_t                reportID,
                                    uint8_t *               report, 
                                    CFIndex                 reportLength);

/*! @typedef IOHIDValueCallback
    @discussion Type and arguments of callout C function that is used when an element value completion routine is called.
    @param context void * pointer to more data.
    @param result Completion result of desired operation.
    @param sender Interface instance sending the completion routine.
    @param value IOHIDValueRef containing the returned element value.
*/
typedef void (*IOHIDValueCallback) ( 
                                    void *                  context,
                                    IOReturn                result, 
                                    void *                  sender,
                                    IOHIDValueRef           value);

/*! @typedef IOHIDValueMultipleCallback
    @discussion Type and arguments of callout C function that is used when an element value completion routine is called.
    @param context void * pointer to more data.
    @param result Completion result of desired operation.
    @param sender Interface instance sending the completion routine.
    @param multiple CFDictionaryRef containing the returned element key value pairs.
*/
typedef void (*IOHIDValueMultipleCallback) ( 
                                    void *                  context,
                                    IOReturn                result, 
                                    void *                  sender,
                                    CFDictionaryRef         multiple);

/*! @typedef IOHIDDeviceCallback
    @discussion Type and arguments of callout C function that is used when a device routine is called.
    @param context void * pointer to more data.
    @param result Completion result of desired operation.
    @param device IOHIDDeviceRef containing the sending device.
*/
typedef void (*IOHIDDeviceCallback) ( 
                                    void *                  context,
                                    IOReturn                result, 
                                    void *                  sender,
                                    IOHIDDeviceRef          device);

__END_DECLS
#endif /* _IOKIT_HID_IOHIDBASE_H_ */