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Tidy up handling of eye tracker streaming

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This commit is contained in:
David Rowe 2015-08-10 12:52:47 -07:00
parent 051a398fa2
commit 4f3c4a5312
2 changed files with 10 additions and 5 deletions
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14
interface/src/devices/EyeTracker.cpp
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@ -29,9 +29,11 @@ static void CALLBACK eyeTrackerCallback(smi_CallbackDataStruct* data) {
EyeTracker::~EyeTracker() {
#ifdef HAVE_IVIEWHMD
int result = smi_quit();
if (result != SMI_RET_SUCCESS) {
qCWarning(interfaceapp) << "Eye Tracker: Error terminating tracking:" << smiReturnValueToString(result);
if (_isStreaming) {
int result = smi_quit();
if (result != SMI_RET_SUCCESS) {
qCWarning(interfaceapp) << "Eye Tracker: Error terminating tracking:" << smiReturnValueToString(result);
}
}
#endif
}
@ -131,16 +133,18 @@ void EyeTracker::setEnabled(bool enabled, bool simulate) {
qCDebug(interfaceapp) << "Eye Tracker: Set enabled =" << enabled << ", simulate =" << simulate;
bool success = true;
int result = 0;
if (enabled) {
if (enabled && !_isStreaming) {
// There is no smi_stopStreaming() method so keep streaming once started in case tracking is re-enabled after stopping.
result = smi_startStreaming(simulate);
if (result != SMI_RET_SUCCESS) {
qCWarning(interfaceapp) << "Eye Tracker: Error starting streaming:" << smiReturnValueToString(result);
success = false;
}
_isStreaming = success;
}
_isEnabled = enabled && success;
_isEnabled = enabled && _isStreaming;
_isSimulating = _isEnabled && simulate;
if (!success && result != SMI_ERROR_HMD_NOT_SUPPORTED) {

1
interface/src/devices/EyeTracker.h
View file

@ -50,6 +50,7 @@ private:
QString smiReturnValueToString(int value);
bool _isInitialized = false;
bool _isStreaming = false;
bool _isEnabled = false;
bool _isSimulating = false;