static inline uint8_t get_nibble (void)
{
static uint8_t next = 0;
if (aligned) {
fieldoffset[field]++;
next = GETBYTES(1, "get_nibble (aligned)");
aligned = 0;
return next >> 4;
} else {
/*------------------------------------ performGet ---*/
static bool
performGet(FidgetPtr xx,
HIDDeviceDataPtr walkerHID,
PSymbol deviceType,
const short argc,
PAtom argv)
{
bool okSoFar = true;
OSErr result;
E_PhidgResult action = kPhidgDoDefault;
if (walkerHID->fClass)
{
PhidgetDescriptorPtr kind = reinterpret_cast<PhidgetDescriptorPtr>(walkerHID->fClass);
#if defined(COMPILE_FOR_OSX_4)
action = reinterpret_cast<FpDoGet>(kind->fDoGetFun)(OUR_NAME, deviceType,
xx->fDataOut, kind->fShared,
walkerHID->fPrivate, walkerHID,
short(argc - 2), argv + 2,
&result);
#endif /* COMPILE_FOR_OSX_4 */
#if defined(COMPILE_FOR_OS9_4)
action = static_cast<E_PhidgResult>(CallUniversalProc(kind->fDoGetUpp, uppDoGetProcInfo,
OUR_NAME, deviceType, xx->fDataOut, kind->fShared,
walkerHID->fPrivate, walkerHID, short(argc - 2), argv + 2,
&result));
#endif /* COMPILE_FOR_OS9_4 */
}
if (action == kPhidgDoDefault)
{
#if defined(COMPILE_FOR_OSX_4)
// Note that 'default' is only supported with 'CATS' - there is no reasonable behaviour
// if we are using a report handler... as we do for non-'CATS'!
if (argc >= 3)
{
long element = 0;
if (argv[2].a_type == A_LONG)
element = argv[2].a_w.w_long;
else
{
okSoFar = false;
LOG_ERROR_2(OUTPUT_PREFIX "element is not an integer for '%s:get'",
deviceType->s_name);
}
if (okSoFar)
{
HIDElementDataPtr anElement = NULL_PTR;
if (element)
{
// Find the matching element:
for (anElement = walkerHID->fFirstElement; anElement; anElement = anElement->fNext)
{
if (anElement->fCookie == reinterpret_cast<IOHIDElementCookie>(element))
break;
}
}
if (anElement)
{
UInt32 extendedLength;
Pvoid extendedValue;
IOReturn result;
long value = getHIDElementValue(OUR_NAME, *walkerHID, *anElement,
extendedLength, extendedValue, result);
if (result == KERN_SUCCESS)
{
if (extendedLength)
{
PAtom newList = GETBYTES(extendedLength + 2, Atom);
Pchar longValue = reinterpret_cast<Pchar>(extendedValue);
SETSYM(newList, deviceType);
SETSYM(newList + 1, walkerHID->fSerialNumber);
for (UInt32 ii = 0; ii < extendedLength; ++ii, ++longValue)
SETLONG(newList + ii + 2, long(*longValue & 0x00FF));
genericListOutput(xx->fDataOut, short(extendedLength + 2), newList);
FREEBYTES(newList, extendedLength + 2)
}
else
{
Atom newList[3];
SETSYM(newList, deviceType);
SETSYM(newList + 1, walkerHID->fSerialNumber);
SETLONG(newList + 2, value);
genericListOutput(xx->fDataOut, sizeof(newList) / sizeof(*newList),
newList);
}
}
if (result)
outlet_int(xx->fResultOut, result);
}
else
{
okSoFar = false;
LOG_ERROR_2(OUTPUT_PREFIX "element not found for '%sget'", deviceType->s_name)
}
}
