boolean_t isNXEvent (IOHIDEventRef event) {
CFIndex usage = IOHIDEventGetIntegerValue(event, kIOHIDEventFieldVendorDefinedUsage);
if (IOHIDEventGetType(event) == kIOHIDEventTypeVendorDefined &&
IOHIDEventGetIntegerValue(event, kIOHIDEventFieldVendorDefinedUsagePage) == kHIDPage_AppleVendor &&
(usage == kHIDUsage_AppleVendor_NXEvent ||
usage == kHIDUsage_AppleVendor_NXEvent_Translated ||
usage == kHIDUsage_AppleVendor_NXEvent_Diagnostic)) {
return true;
}
return false;
}
void printNXEventInfo (IOHIDEventRef event) {
CFIndex usage = IOHIDEventGetIntegerValue(event, kIOHIDEventFieldVendorDefinedUsage);
if (__nxUsageMask & (1 << usage))
{
NXEvent *nxEvent = NULL;
CFIndex nxEventLength = 0;
IOHIDEventGetVendorDefinedData (event, (uint8_t**)&nxEvent, &nxEventLength);
if (nxEvent && (nxEventLength == sizeof(NXEvent) || nxEventLength == sizeof(NXEventExt)))
{
if (__nxTypeMask & (1 << nxEvent->type))
{
CFStringRef nxEventDescription;
if (nxEventLength == sizeof(NXEventExt)) {
nxEventDescription = NxEventExtCreateDescription (nxEvent);
} else {
nxEventDescription = NxEventCreateDescription (nxEvent);
}
printf("[NXEvent Dispatch Type: %s]\n%s",
(usage == kHIDUsage_AppleVendor_NXEvent) ? "Kernel" : (
(usage == kHIDUsage_AppleVendor_NXEvent_Translated) ? "Translated" : "Diagnostic"),
CFStringGetCStringPtr(nxEventDescription, kCFStringEncodingMacRoman)
);
CFRelease(nxEventDescription);
}
}
else
{
printf("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
printf("ERROR!!! NXEventData %p, nxEventLength = 0x%lx (expected length 0x%lx)\n", nxEvent, nxEventLength, sizeof(NXEvent));
printf("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
}
}
}
static bool button_pressed(void *event_system, uint32_t usage_page, uint32_t usage) {
/* This magic comes straight from Substrate... I don't really understand
* what it's doing. In particular, where is the equivalent kernel
* implementation on OS X? Does it not exist? But I guess Substrate is
* emulating backboardd. */
void *dummy = IOHIDEventCreateKeyboardEvent(NULL, mach_absolute_time(),
usage_page, usage,
0, 0);
if (!dummy) {
ib_log("couldn't create dummy HID event");
return false;
}
void *event = IOHIDEventSystemCopyEvent(event_system,
kIOHIDEventTypeKeyboard,
dummy, 0);
if (!event)
return false;
CFIndex ival = IOHIDEventGetIntegerValue(event, kIOHIDEventFieldKeyboardDown);
return ival;
}
