Added initial joystick support on OS X

This commit is contained in:
Sergey Tikhomirov 2011-09-18 22:05:00 +03:00
parent 901a743d97
commit 2357cf6f30
4 changed files with 486 additions and 8 deletions

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@ -117,8 +117,12 @@ if (UNIX AND APPLE)
# Set up library and include paths
find_library(COCOA_FRAMEWORK Cocoa)
find_library(IOKIT_FRAMEWORK IOKit)
find_library(CORE_FOUNDATION_FRAMEWORK CoreFoundation)
list(APPEND GLFW_LIBRARIES ${COCOA_FRAMEWORK})
list(APPEND GLFW_LIBRARIES ${OPENGL_gl_LIBRARY})
list(APPEND GLFW_LIBRARIES ${IOKIT_FRAMEWORK})
list(APPEND GLFW_LIBRARIES ${CORE_FOUNDATION_FRAMEWORK})
endif(UNIX AND APPLE)
#--------------------------------------------------------------------

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@ -225,6 +225,8 @@ int _glfwPlatformInit(void)
_glfwLibrary.NS.desktopMode =
(NSDictionary*) CGDisplayCurrentMode(CGMainDisplayID());
_glfwInitJoysticks();
return GL_TRUE;
}
@ -243,6 +245,8 @@ int _glfwPlatformTerminate(void)
[_glfwLibrary.NS.autoreleasePool release];
_glfwLibrary.NS.autoreleasePool = nil;
_glfwTerminateJoysticks();
return GL_TRUE;
}

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@ -30,6 +30,388 @@
#include "internal.h"
#include <unistd.h>
#include <ctype.h>
#include <sysexits.h>
#include <mach/mach.h>
#include <mach/mach_error.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/hid/IOHIDLib.h>
#include <IOKit/hid/IOHIDKeys.h>
#include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
//------------------------------------------------------------------------
// Joystick element information
//------------------------------------------------------------------------
typedef struct {
IOHIDElementCookie Cookie;
long Value;
long Min;
long Max;
long MinReport;
long MaxReport;
} joystick_element_t;
//------------------------------------------------------------------------
// Joystick information & state
//------------------------------------------------------------------------
typedef struct {
int Present;
char Product[256];
IOHIDDeviceInterface ** Interface;
int NumAxes;
int NumButtons;
int NumHats;
CFMutableArrayRef Axes;
CFMutableArrayRef Buttons;
CFMutableArrayRef Hats;
} joystick_t;
joystick_t _glfwJoysticks[GLFW_JOYSTICK_LAST + 1];
void GetElementsCFArrayHandler(const void * value, void * parameter);
static void JoystickAddElemet(joystick_t * joystick, CFTypeRef refElement)
{
long elementType, usagePage, usage;
CFTypeRef refElementType, refUsagePage, refUsage;
refElementType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementTypeKey));
refUsagePage = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsagePageKey));
refUsage = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementUsageKey));
CFMutableArrayRef elementsArray = NULL;
CFNumberGetValue(refElementType, kCFNumberLongType, &elementType);
CFNumberGetValue(refUsagePage, kCFNumberLongType, &usagePage);
CFNumberGetValue(refUsage, kCFNumberLongType, &usage);
if ((elementType == kIOHIDElementTypeInput_Axis) ||
(elementType == kIOHIDElementTypeInput_Button) ||
(elementType == kIOHIDElementTypeInput_Misc))
{
switch (usagePage) /* only interested in kHIDPage_GenericDesktop and kHIDPage_Button */
{
case kHIDPage_GenericDesktop:
switch (usage)
{
case kHIDUsage_GD_X:
case kHIDUsage_GD_Y:
case kHIDUsage_GD_Z:
case kHIDUsage_GD_Rx:
case kHIDUsage_GD_Ry:
case kHIDUsage_GD_Rz:
case kHIDUsage_GD_Slider:
case kHIDUsage_GD_Dial:
case kHIDUsage_GD_Wheel:
joystick->NumAxes++;
elementsArray = joystick->Axes;
break;
case kHIDUsage_GD_Hatswitch:
joystick->NumHats++;
elementsArray = joystick->Hats;
break;
}
break;
case kHIDPage_Button:
joystick->NumButtons++;
elementsArray = joystick->Buttons;
break;
default:
break;
}
if (elementsArray)
{
long number;
CFTypeRef refType;
joystick_element_t * element = (joystick_element_t *) malloc(sizeof(joystick_element_t));
CFArrayAppendValue(elementsArray, element);
refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementCookieKey));
if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
element->Cookie = (IOHIDElementCookie) number;
refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMinKey));
if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
element->MinReport = element->Min = number;
refType = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementMaxKey));
if (refType && CFNumberGetValue(refType, kCFNumberLongType, &number))
element->MaxReport = element->Max = number;
}
}
else
{
CFTypeRef refElementTop = CFDictionaryGetValue(refElement, CFSTR(kIOHIDElementKey));
if (refElementTop)
{
CFTypeID type = CFGetTypeID (refElementTop);
if (type == CFArrayGetTypeID()) /* if element is an array */
{
CFRange range = {0, CFArrayGetCount (refElementTop)};
CFArrayApplyFunction(refElementTop, range, GetElementsCFArrayHandler, joystick);
}
}
}
}
void GetElementsCFArrayHandler(const void * value, void * parameter)
{
if (CFGetTypeID(value) == CFDictionaryGetTypeID())
JoystickAddElemet((joystick_t *) parameter, (CFTypeRef) value);
}
static long GetElementValue(joystick_t * joystick, joystick_element_t * element)
{
IOReturn result = kIOReturnSuccess;
IOHIDEventStruct hidEvent;
hidEvent.value = 0;
if (NULL != joystick && NULL != element && NULL != joystick->Interface)
{
result = (*(joystick->Interface))->getElementValue(joystick->Interface, element->Cookie, &hidEvent);
if (kIOReturnSuccess == result)
{
/* record min and max for auto calibration */
if (hidEvent.value < element->MinReport)
element->MinReport = hidEvent.value;
if (hidEvent.value > element->MaxReport)
element->MaxReport = hidEvent.value;
}
}
/* auto user scale */
return (long) hidEvent.value;
}
static void RemoveJoystick(joystick_t * joystick)
{
if (joystick->Present)
{
joystick->Present = GL_FALSE;
for (int i = 0; i < joystick->NumAxes; i++)
{
joystick_element_t * axes =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Axes, i);
free(axes);
}
CFArrayRemoveAllValues(joystick->Axes);
joystick->NumAxes = 0;
for (int i = 0; i < joystick->NumButtons; i++)
{
joystick_element_t * button =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Buttons, i);
free(button);
}
CFArrayRemoveAllValues(joystick->Buttons);
joystick->NumButtons = 0;
for (int i = 0; i < joystick->NumHats; i++)
{
joystick_element_t * hat =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Hats, i);
free(hat);
}
CFArrayRemoveAllValues(joystick->Hats);
joystick->Hats = 0;
(*(joystick->Interface))->close(joystick->Interface);
(*(joystick->Interface))->Release(joystick->Interface);
joystick->Interface = NULL;
}
}
static void RemovalCallback(void * target, IOReturn result, void * refcon, void * sender)
{
RemoveJoystick((joystick_t *) refcon);
}
static void PollJoystickEvents(void)
{
for (int i = 0; i < GLFW_JOYSTICK_LAST + 1; i++)
{
joystick_t * joystick = &_glfwJoysticks[i];
if (joystick->Present)
{
for (CFIndex i = 0; i < joystick->NumButtons; i++)
{
joystick_element_t * button =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Buttons, i);
button->Value = GetElementValue(joystick, button);
}
for (CFIndex i = 0; i < joystick->NumAxes; i++)
{
joystick_element_t * axes =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick->Axes, i);
axes->Value = GetElementValue(joystick, axes);
}
}
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// Initialize joystick interface
//========================================================================
void _glfwInitJoysticks(void)
{
int deviceCounter = 0;
IOReturn result = kIOReturnSuccess;
mach_port_t masterPort = 0;
io_iterator_t objectIterator = 0;
CFMutableDictionaryRef hidMatchDictionary = NULL;
io_object_t ioHIDDeviceObject = 0;
result = IOMasterPort(bootstrap_port, &masterPort);
hidMatchDictionary = IOServiceMatching(kIOHIDDeviceKey);
if (kIOReturnSuccess != result || !hidMatchDictionary)
return;
result = IOServiceGetMatchingServices(masterPort, hidMatchDictionary, &objectIterator);
if (kIOReturnSuccess != result)
return;
if (!objectIterator) /* there are no joysticks */
return;
while ((ioHIDDeviceObject = IOIteratorNext(objectIterator)))
{
CFMutableDictionaryRef hidProperties = 0;
kern_return_t result;
CFTypeRef refCF = 0;
IOCFPlugInInterface ** ppPlugInInterface = NULL;
HRESULT plugInResult = S_OK;
SInt32 score = 0;
long usagePage, usage;
result = IORegistryEntryCreateCFProperties(
ioHIDDeviceObject,
&hidProperties,
kCFAllocatorDefault,
kNilOptions);
if (result != kIOReturnSuccess) continue;
/* Check device type */
refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDPrimaryUsagePageKey));
if (refCF)
CFNumberGetValue(refCF, kCFNumberLongType, &usagePage);
refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDPrimaryUsageKey));
if (refCF)
CFNumberGetValue (refCF, kCFNumberLongType, &usage);
if ((usagePage != kHIDPage_GenericDesktop) ||
(usage != kHIDUsage_GD_Joystick &&
usage != kHIDUsage_GD_GamePad &&
usage != kHIDUsage_GD_MultiAxisController))
{
/* We don't interested in this device */
continue;
}
joystick_t * joystick = &_glfwJoysticks[deviceCounter];
joystick->Present = GL_TRUE;
result = IOCreatePlugInInterfaceForService(
ioHIDDeviceObject,
kIOHIDDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&ppPlugInInterface,
&score);
if (kIOReturnSuccess != result)
exit(EXIT_SUCCESS);
plugInResult = (*ppPlugInInterface)->QueryInterface(
ppPlugInInterface,
CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID),
(void *) &(joystick->Interface));
if (S_OK != plugInResult)
exit(EXIT_FAILURE);
(*ppPlugInInterface)->Release(ppPlugInInterface);
(*(joystick->Interface))->open(joystick->Interface, 0);
(*(joystick->Interface))->setRemovalCallback(joystick->Interface, RemovalCallback, joystick, joystick);
/* Get product string */
refCF = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDProductKey));
if (refCF)
CFStringGetCString(refCF, (char *) &(joystick->Product), 256, CFStringGetSystemEncoding());
joystick->NumAxes = 0;
joystick->NumButtons = 0;
joystick->NumHats = 0;
joystick->Axes = CFArrayCreateMutable(NULL, 0, NULL);
joystick->Buttons = CFArrayCreateMutable(NULL, 0, NULL);
joystick->Hats = CFArrayCreateMutable(NULL, 0, NULL);
CFTypeRef refTopElement = CFDictionaryGetValue(hidProperties, CFSTR(kIOHIDElementKey));
CFTypeID type = CFGetTypeID(refTopElement);
if (type == CFArrayGetTypeID())
{
CFRange range = {0, CFArrayGetCount(refTopElement)};
CFArrayApplyFunction(refTopElement, range, GetElementsCFArrayHandler, (void *) joystick);
}
deviceCounter++;
}
}
//========================================================================
// Close all opened joystick handles
//========================================================================
void _glfwTerminateJoysticks(void)
{
for (int i = 0; i < GLFW_JOYSTICK_LAST + 1; i++)
{
joystick_t * joystick = &_glfwJoysticks[i];
RemoveJoystick(joystick);
}
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
@ -38,29 +420,108 @@
// Determine joystick capabilities
//========================================================================
int _glfwPlatformGetJoystickParam( int joy, int param )
int _glfwPlatformGetJoystickParam(int joy, int param)
{
// TODO: Implement this.
if (!_glfwJoysticks[joy].Present)
{
// TODO: Figure out if this is an error
return 0;
}
switch (param)
{
case GLFW_PRESENT:
return GL_TRUE;
case GLFW_AXES:
return (int) CFArrayGetCount(_glfwJoysticks[joy].Axes);
case GLFW_BUTTONS:
return (int) CFArrayGetCount(_glfwJoysticks[joy].Buttons);
default:
break;
}
return 0;
}
//========================================================================
// Get joystick axis positions
//========================================================================
int _glfwPlatformGetJoystickPos( int joy, float *pos, int numaxes )
int _glfwPlatformGetJoystickPos(int joy, float *pos, int numaxes)
{
// TODO: Implement this.
return 0;
if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
return 0;
joystick_t joystick = _glfwJoysticks[joy];
if (!joystick.Present)
{
// TODO: Figure out if this is an error
return 0;
}
numaxes = numaxes < joystick.NumAxes ? numaxes : joystick.NumAxes;
// Update joystick state
PollJoystickEvents();
for (int i = 0; i < numaxes; i++)
{
joystick_element_t * axes =
(joystick_element_t *) CFArrayGetValueAtIndex(joystick.Axes, i);
long readScale = axes->MaxReport - axes->MinReport;
if (readScale == 0)
pos[i] = axes->Value;
else
pos[i] = (2.0f * (axes->Value - axes->MinReport) / readScale) - 1.0f;
printf("%ld, %ld, %ld\n", axes->Value, axes->MinReport, axes->MaxReport);
if (i & 1)
pos[i] = -pos[i];
}
return numaxes;
}
//========================================================================
// Get joystick button states
//========================================================================
int _glfwPlatformGetJoystickButtons( int joy, unsigned char *buttons, int numbuttons )
int _glfwPlatformGetJoystickButtons(int joy, unsigned char *buttons,
int numbuttons)
{
// TODO: Implement this.
return 0;
if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
return 0;
joystick_t joystick = _glfwJoysticks[joy];
if (!joystick.Present)
{
// TODO: Figure out if this is an error
return 0;
}
numbuttons = numbuttons < joystick.NumButtons ? numbuttons : joystick.NumButtons;
// Update joystick state
PollJoystickEvents();
for (int i = 0; i < numbuttons; i++)
{
joystick_element_t * button = (joystick_element_t *) CFArrayGetValueAtIndex(joystick.Buttons, i);
buttons[i] = button->Value ? GLFW_PRESS : GLFW_RELEASE;
}
return numbuttons;
}

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@ -97,4 +97,13 @@ typedef struct _GLFWlibraryNS
} _GLFWlibraryNS;
//========================================================================
// Prototypes for platform specific internal functions
//========================================================================
// Joystick input
void _glfwInitJoysticks(void);
void _glfwTerminateJoysticks(void);
#endif // _platform_h_