XnStatus XnDeviceBase::DestroyStream(const XnChar* StreamName)
{
XnStatus nRetVal = XN_STATUS_OK;
xnLogInfo(XN_MASK_DDK, "Destroying stream '%s'...", StreamName);
// keep the stream name (we now delete the module, so the name will be lost)
XnChar strStreamName[XN_DEVICE_MAX_STRING_LENGTH];
strncpy(strStreamName, StreamName, XN_DEVICE_MAX_STRING_LENGTH);
// Find the stream
XnDeviceModuleHolder* pStreamHolder;
nRetVal = FindStream(strStreamName, &pStreamHolder);
XN_IS_STATUS_OK(nRetVal);
// remove it from map
nRetVal = RemoveModule(strStreamName);
XN_IS_STATUS_OK(nRetVal);
// and free it's memory
DestroyStreamModule(pStreamHolder);
// free memory of registered properties to this stream
FreeModuleRegisteredProperties(StreamName);
// raise event
m_OnStreamsChangeEvent.Raise(GetDeviceHandle(), strStreamName, XN_DEVICE_STREAM_DELETED);
xnLogVerbose(XN_MASK_DDK, "'%s' stream destroyed.", strStreamName);
return XN_STATUS_OK;
}
XnStatus XnDeviceBase::DestroyStream(const XnChar* StreamName)
{
XnStatus nRetVal = XN_STATUS_OK;
xnLogInfo(XN_MASK_DDK, "Destroying stream '%s'...", StreamName);
// keep the stream name (we now delete the module, so the name will be lost)
XnChar strStreamName[XN_DEVICE_MAX_STRING_LENGTH];
strncpy(strStreamName, StreamName, XN_DEVICE_MAX_STRING_LENGTH);
xnl::AutoCSLocker lock(m_hLock);
// Find the stream
XnDeviceModuleHolder* pStreamHolder;
nRetVal = FindStream(strStreamName, &pStreamHolder);
XN_IS_STATUS_OK(nRetVal);
XnDeviceStream* pStream = (XnDeviceStream*)pStreamHolder->GetModule();
XnUInt32 nRefCount = pStream->DecRef();
if (0 == nRefCount)
{
// remove it from map
nRetVal = RemoveModule(strStreamName);
XN_IS_STATUS_OK(nRetVal);
// and free it's memory
DestroyStreamModule(pStreamHolder);
// free memory of registered properties to this stream
FreeModuleRegisteredProperties(StreamName);
xnLogVerbose(XN_MASK_DDK, "'%s' stream destroyed.", strStreamName);
}
else
{
xnLogVerbose(XN_MASK_DDK, "'%s' stream now has %d references.", strStreamName, nRefCount);
}
return XN_STATUS_OK;
}
XnStatus XnDeviceBase::CreateStreamImpl(const XnChar* strType, const XnChar* strName, const XnActualPropertiesHash* pInitialSet)
{
XnStatus nRetVal = XN_STATUS_OK;
xnLogInfo(XN_MASK_DDK, "Creating stream '%s' of type '%s'...", strName, strType);
XnDeviceModule* pModule;
if (FindModule(strName, &pModule) == XN_STATUS_OK)
{
// already exists. check sharing mode (when shared, we allow "creating" the same stream)
if (GetSharingMode() != XN_DEVICE_SHARED ||
!IsStream(pModule) ||
strcmp(strType, ((XnDeviceStream*)pModule)->GetType()) != 0)
{
XN_LOG_WARNING_RETURN(XN_STATUS_STREAM_ALREADY_EXISTS, XN_MASK_DDK, "A stream with this name already exists!");
}
// OK, we'll allow this. Just set new configuration
if (pInitialSet != NULL)
{
nRetVal = pModule->BatchConfig(*pInitialSet);
XN_IS_STATUS_OK(nRetVal);
}
}
else
{
// create stream
XnDeviceModuleHolder* pNewStreamHolder = NULL;
nRetVal = CreateStreamModule(strType, strName, &pNewStreamHolder);
XN_IS_STATUS_OK(nRetVal);
XnDeviceStream* pNewStream = (XnDeviceStream*)(pNewStreamHolder->GetModule());
if (pNewStream == NULL)
{
DestroyStreamModule(pNewStreamHolder);
XN_LOG_ERROR_RETURN(XN_STATUS_ERROR, XN_MASK_DDK, "Internal Error: Invalid new stream!");
}
// initialize the stream
xnLogVerbose(XN_MASK_DDK, "Initializing stream '%s'...", strName);
nRetVal = pNewStreamHolder->Init(pInitialSet);
if (nRetVal != XN_STATUS_OK)
{
DestroyStreamModule(pNewStreamHolder);
return (nRetVal);
}
// set it's mirror value (if not requested otherwise)
XnBool bSetMirror = TRUE;
if (pInitialSet != NULL)
{
XnActualPropertiesHash::ConstIterator it = pInitialSet->end();
if (XN_STATUS_OK == pInitialSet->Find(XN_MODULE_PROPERTY_MIRROR, it))
{
bSetMirror = FALSE;
}
}
if (bSetMirror)
{
nRetVal = pNewStream->SetMirror((XnBool)m_DeviceMirror.GetValue());
if (nRetVal != XN_STATUS_OK)
{
DestroyStreamModule(pNewStreamHolder);
return (nRetVal);
}
}
// add it to the list of existing modules
nRetVal = AddModule(pNewStreamHolder);
if (nRetVal != XN_STATUS_OK)
{
DestroyStreamModule(pNewStreamHolder);
return (nRetVal);
}
xnLogInfo(XN_MASK_DDK, "Stream '%s' was initialized.", strName);
nRetVal = StreamAdded(pNewStream);
XN_IS_STATUS_OK(nRetVal);
xnLogInfo(XN_MASK_DDK, "'%s' stream was created.", strName);
}
return (XN_STATUS_OK);
}
