src/joystick/darwin/SDL_sysjoystick_c.h
author Ryan C. Gordon <icculus@icculus.org>
Tue, 24 Mar 2015 13:52:01 -0400
changeset 9433 bd062398b648
parent 8242 f6a2b1a6932b
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Cleanups in the joystick code.

Removed some redundant state and other confusions.

Fixes Bugzilla #2738.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #ifndef SDL_JOYSTICK_IOKIT_H
    24 
    25 #include <IOKit/hid/IOHIDLib.h>
    26 
    27 struct recElement
    28 {
    29     IOHIDElementRef elementRef;
    30     IOHIDElementCookie cookie;
    31     uint32_t usagePage, usage;      /* HID usage */
    32     SInt32 min;                   /* reported min value possible */
    33     SInt32 max;                   /* reported max value possible */
    34 
    35     /* runtime variables used for auto-calibration */
    36     SInt32 minReport;             /* min returned value */
    37     SInt32 maxReport;             /* max returned value */
    38 
    39     struct recElement *pNext;   /* next element in list */
    40 };
    41 typedef struct recElement recElement;
    42 
    43 struct joystick_hwdata
    44 {
    45     IOHIDDeviceRef deviceRef;   /* HIDManager device handle */
    46     io_service_t ffservice;     /* Interface for force feedback, 0 = no ff */
    47 
    48     char product[256];          /* name of product */
    49     uint32_t usage;                 /* usage page from IOUSBHID Parser.h which defines general usage */
    50     uint32_t usagePage;             /* usage within above page from IOUSBHID Parser.h which defines specific usage */
    51 
    52     int axes;                  /* number of axis (calculated, not reported by device) */
    53     int buttons;               /* number of buttons (calculated, not reported by device) */
    54     int hats;                  /* number of hat switches (calculated, not reported by device) */
    55     int elements;              /* number of total elements (should be total of above) (calculated, not reported by device) */
    56 
    57     recElement *firstAxis;
    58     recElement *firstButton;
    59     recElement *firstHat;
    60 
    61     SDL_bool removed;
    62 
    63     int instance_id;
    64     SDL_JoystickGUID guid;
    65     Uint8 send_open_event;      /* 1 if we need to send an Added event for this device */
    66 
    67     struct joystick_hwdata *pNext;      /* next device */
    68 };
    69 typedef struct joystick_hwdata recDevice;
    70 
    71 
    72 #endif /* SDL_JOYSTICK_IOKIT_H */