pcsxr-1.9.92

[pcsx_rearmed.git] / macosx / plugins / DFInput / SDL / src / joystick / darwin / SDL_sysjoystick.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2010 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifdef SDL_JOYSTICK_IOKIT

/* SDL joystick driver for Darwin / Mac OS X, based on the IOKit HID API */
/* Written 2001 by Max Horn */

#include <unistd.h>
#include <ctype.h>
#include <sysexits.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOCFPlugIn.h>
#ifdef MACOS_10_0_4
#include <IOKit/hidsystem/IOHIDUsageTables.h>
#else
/* The header was moved here in Mac OS X 10.1 */
#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
#endif
#include <IOKit/hid/IOHIDLib.h>
#include <IOKit/hid/IOHIDKeys.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Carbon/Carbon.h>      /* for NewPtrClear, DisposePtr */

/* For force feedback testing. */
#include <ForceFeedback/ForceFeedback.h>
#include <ForceFeedback/ForceFeedbackConstants.h>

#include "SDL_joystick.h"
#include "../SDL_sysjoystick.h"
#include "../SDL_joystick_c.h"
#include "SDL_sysjoystick_c.h"


/* Linked list of all available devices */
static recDevice *gpDeviceList = NULL;


static void
HIDReportErrorNum(char *strError, long numError)
{
    SDL_SetError(strError);
}

static void HIDGetCollectionElements(CFMutableDictionaryRef deviceProperties,
                                     recDevice * pDevice);

/* returns current value for element, polling element
 * will return 0 on error conditions which should be accounted for by application
 */

static SInt32
HIDGetElementValue(recDevice * pDevice, recElement * pElement)
{
    IOReturn result = kIOReturnSuccess;
    IOHIDEventStruct hidEvent;
    hidEvent.value = 0;

    if (NULL != pDevice && NULL != pElement && NULL != pDevice->interface) {
        result =
            (*(pDevice->interface))->getElementValue(pDevice->interface,
                                                     pElement->cookie,
                                                     &hidEvent);
        if (kIOReturnSuccess == result) {
            /* record min and max for auto calibration */
            if (hidEvent.value < pElement->minReport)
                pElement->minReport = hidEvent.value;
            if (hidEvent.value > pElement->maxReport)
                pElement->maxReport = hidEvent.value;
        }
    }

    /* auto user scale */
    return hidEvent.value;
}

static SInt32
HIDScaledCalibratedValue(recDevice * pDevice, recElement * pElement,
                         long min, long max)
{
    float deviceScale = max - min;
    float readScale = pElement->maxReport - pElement->minReport;
    SInt32 value = HIDGetElementValue(pDevice, pElement);
    if (readScale == 0)
        return value;           /* no scaling at all */
    else
        return ((value - pElement->minReport) * deviceScale / readScale) +
            min;
}


static void
HIDRemovalCallback(void *target, IOReturn result, void *refcon, void *sender)
{
    recDevice *device = (recDevice *) refcon;
    device->removed = 1;
    device->uncentered = 1;
}



/* Create and open an interface to device, required prior to extracting values or building queues.
 * Note: appliction now owns the device and must close and release it prior to exiting
 */

static IOReturn
HIDCreateOpenDeviceInterface(io_object_t hidDevice, recDevice * pDevice)
{
    IOReturn result = kIOReturnSuccess;
    HRESULT plugInResult = S_OK;
    SInt32 score = 0;
    IOCFPlugInInterface **ppPlugInInterface = NULL;

    if (NULL == pDevice->interface) {
        result =
            IOCreatePlugInInterfaceForService(hidDevice,
                                              kIOHIDDeviceUserClientTypeID,
                                              kIOCFPlugInInterfaceID,
                                              &ppPlugInInterface, &score);
        if (kIOReturnSuccess == result) {
            /* Call a method of the intermediate plug-in to create the device interface */
            plugInResult =
                (*ppPlugInInterface)->QueryInterface(ppPlugInInterface,
                                                     CFUUIDGetUUIDBytes
                                                     (kIOHIDDeviceInterfaceID),
                                                     (void *)
                                                     &(pDevice->interface));
            if (S_OK != plugInResult)
                HIDReportErrorNum