status_t
JoystickProtocolHandler::_Update()
{
status_t result = fReport.WaitForReport(B_INFINITE_TIMEOUT);
if (result != B_OK) {
if (fReport.Device()->IsRemoved()) {
TRACE("device has been removed\n");
return B_DEV_NOT_READY;
}
if (result == B_CANCELED)
return B_CANCELED;
if (result != B_INTERRUPTED) {
// interrupts happen when other reports come in on the same
// input as ours
TRACE_ALWAYS("error waiting for report: %s\n", strerror(result));
}
// signal that we simply want to try again
return B_OK;
}
result = mutex_lock(&fUpdateLock);
if (result != B_OK) {
fReport.DoneProcessing();
return result;
}
memset(fCurrentValues.data, 0, fCurrentValues.data_size);
for (uint32 i = 0; i < fAxisCount; i++) {
if (fAxis[i] == NULL)
continue;
if (fAxis[i]->Extract() == B_OK && fAxis[i]->Valid())
fCurrentValues.axes[i] = (int16)fAxis[i]->ScaledData(16, true);
}
for (uint32 i = 0; i < fHatCount; i++) {
HIDReportItem *hat = fHats[i];
if (hat == NULL)
continue;
if (hat->Extract() != B_OK || !hat->Valid())
continue;
fCurrentValues.hats[i] = hat->ScaledRangeData(1, 8);
}
for (uint32 i = 0; i < fButtonCount; i++) {
HIDReportItem *button = fButtons[i];
if (button == NULL)
break;
uint16 index = button->UsageID() - 1;
if (index >= fMaxButton)
continue;
if (button->Extract() == B_OK && button->Valid()) {
fCurrentValues.buttons[index / 32]
|= (button->Data() & 1) << (index % 32);
}
}
fReport.DoneProcessing();
TRACE("got joystick report\n");
*fCurrentValues.timestamp = system_time();
mutex_unlock(&fUpdateLock);
return B_OK;
}
status_t
TabletProtocolHandler::_ReadReport(void *buffer)
{
status_t result = fReport.WaitForReport(B_INFINITE_TIMEOUT);
if (result != B_OK) {
if (fReport.Device()->IsRemoved()) {
TRACE("device has been removed\n");
return B_DEV_NOT_READY;
}
if (result != B_INTERRUPTED) {
// interrupts happen when other reports come in on the same
// input as ours
TRACE_ALWAYS("error waiting for report: %s\n", strerror(result));
}
// signal that we simply want to try again
return B_INTERRUPTED;
}
float axisAbsoluteData[2];
axisAbsoluteData[0] = 0.0f;
axisAbsoluteData[1] = 0.0f;
if (fXAxis.Extract() == B_OK && fXAxis.Valid())
axisAbsoluteData[0] = fXAxis.ScaledFloatData();
if (fYAxis.Extract() == B_OK && fYAxis.Valid())
axisAbsoluteData[1] = fYAxis.ScaledFloatData();
uint32 wheelData = 0;
if (fWheel != NULL && fWheel->Extract() == B_OK && fWheel->Valid())
wheelData = fWheel->Data();
uint32 buttons = 0;
for (uint32 i = 0; i < B_MAX_MOUSE_BUTTONS; i++) {
HIDReportItem *button = fButtons[i];
if (button == NULL)
break;
if (button->Extract() == B_OK && button->Valid())
buttons |= (button->Data() & 1) << (button->UsageID() - 1);
}
float pressure = 1.0f;
if (fPressure != NULL && fPressure->Extract() == B_OK
&& fPressure->Valid()) {
pressure = fPressure->ScaledFloatData();
}
float xTilt = 0.0f;
if (fXTilt != NULL && fXTilt->Extract() == B_OK && fXTilt->Valid())
xTilt = fXTilt->ScaledFloatData();
float yTilt = 0.0f;
if (fXTilt != NULL && fYTilt->Extract() == B_OK && fYTilt->Valid())
yTilt = fYTilt->ScaledFloatData();
bool inRange = true;
if (fRange != NULL)
inRange = fRange->Extract() == B_OK && fRange->Valid();
bool eraser = false;
if (fEraser != NULL && fEraser->Extract() == B_OK && fEraser->Valid())
eraser = (fEraser->Data() & 1) != 0;
fReport.DoneProcessing();
TRACE("got tablet report\n");
int32 clicks = 0;
bigtime_t timestamp = system_time();
if (buttons != 0) {
if (fLastButtons == 0) {
if (fLastClickTime + fClickSpeed > timestamp)
fClickCount++;
else
fClickCount = 1;
}
fLastClickTime = timestamp;
clicks = fClickCount;
}
fLastButtons = buttons;
tablet_movement *info = (tablet_movement *)buffer;
memset(info, 0, sizeof(tablet_movement));
info->xpos = axisAbsoluteData[0];
info->ypos = axisAbsoluteData[1];
info->has_contact = inRange;
info->pressure = pressure;
info->eraser = eraser;
info->tilt_x = xTilt;
info->tilt_y = yTilt;
info->buttons = buttons;
info->clicks = clicks;
info->timestamp = timestamp;
info->wheel_ydelta = -wheelData;
return B_OK;
}