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#import "OFInitializationFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFOpenItemFailedException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
static const uint16_t vendorIDNintendo = 0x057E;
static const uint16_t productIDN64Controller = 0x2019;
@interface OFGameController ()
- (instancetype)of_initWithPath: (OFString *)path OF_METHOD_FAMILY(init);
- (void)of_processEvents;
@end
static const uint16_t buttons[] = {
BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TL2,
BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_THUMBL, BTN_THUMBR,
BTN_DPAD_UP, BTN_DPAD_DOWN, BTN_DPAD_LEFT, BTN_DPAD_RIGHT
};
static OFString *
buttonToName(uint16_t button)
buttonToName(uint16_t button, uint16_t vendorID, uint16_t productID)
{
if (vendorID == vendorIDNintendo &&
productID == productIDN64Controller) {
switch (button) {
case BTN_TL2:
return @"Z";
case BTN_Y:
return @"C-Stick Left";
case BTN_C:
return @"C-Stick Right";
case BTN_SELECT:
return @"C-Stick Up";
case BTN_X:
return @"C-Stick Down";
case BTN_MODE:
return @"Home";
case BTN_Z:
return @"Capture";
case BTN_THUMBL:
case BTN_THUMBR:
return nil;
}
}
switch (button) {
case BTN_A:
return @"A";
case BTN_B:
return @"B";
case BTN_C:
return @"C";
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OFStringEncoding encoding = [OFLocale encoding];
unsigned long evBits[OFRoundUpToPowerOf2(OF_ULONG_BIT,
EV_MAX) / OF_ULONG_BIT] = { 0 };
unsigned long keyBits[OFRoundUpToPowerOf2(OF_ULONG_BIT,
KEY_MAX) / OF_ULONG_BIT] = { 0 };
unsigned long absBits[OFRoundUpToPowerOf2(OF_ULONG_BIT,
ABS_MAX) / OF_ULONG_BIT] = { 0 };
struct input_id inputID;
char name[128];
_path = [path copy];
if ((_fd = open([_path cStringWithEncoding: encoding],
O_RDONLY | O_NONBLOCK)) == -1)
@throw [OFOpenItemFailedException
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if (ioctl(_fd, EVIOCGBIT(EV_KEY, sizeof(keyBits)), keyBits) ==
-1)
@throw [OFInitializationFailedException exception];
if (!OFBitSetIsSet(keyBits, BTN_GAMEPAD))
@throw [OFInvalidArgumentException exception];
if (ioctl(_fd, EVIOCGID, &inputID) == -1)
@throw [OFInvalidArgumentException exception];
_vendorID = inputID.vendor;
_productID = inputID.product;
if (ioctl(_fd, EVIOCGNAME(sizeof(name)), name) == -1)
@throw [OFInitializationFailedException exception];
_name = [[OFString alloc] initWithCString: name
encoding: encoding];
_buttons = [[OFMutableSet alloc] init];
for (size_t i = 0; i < sizeof(buttons) / sizeof(*buttons); i++)
[_buttons addObject: buttonToName(buttons[i])];
for (size_t i = 0; i < sizeof(buttons) / sizeof(*buttons);
i++) {
OFString *buttonName =
buttonToName(buttons[i], _vendorID, _productID);
if (buttonName != nil)
[_buttons addObject: buttonName];
}
_pressedButtons = [[OFMutableSet alloc] init];
if (OFBitSetIsSet(evBits, EV_ABS)) {
if (ioctl(_fd, EVIOCGBIT(EV_ABS, sizeof(absBits)),
absBits) == -1)
@throw [OFInitializationFailedException
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}
- (void)of_processEvents
{
struct input_event event;
for (;;) {
OFString *name;
errno = 0;
if (read(_fd, &event, sizeof(event)) < (int)sizeof(event)) {
if (errno == EWOULDBLOCK)
return;
@throw [OFReadFailedException
exceptionWithObject: self
requestedLength: sizeof(event)
errNo: errno];
}
switch (event.type) {
case EV_KEY:
if ((name = buttonToName(event.code, _vendorID,
_productID)) != nil) {
if (event.value)
[_pressedButtons addObject:
if (event.value)
[_pressedButtons addObject: name];
buttonToName(event.code)];
else
[_pressedButtons removeObject:
buttonToName(event.code)];
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