// Handle the FLOWGRAPH_DESTROY_RESOURCES message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpFlowGraphBase::handleDestroyResources(void)
{
int i;
int numResources;
MpResource* pResource;
// if not already stopped, then stop the flow graph
if (mCurState == STARTED)
if (handleStop() == FALSE)
{
assert(FALSE);
return FALSE;
}
// iterate over all resources
// BE VERY CAREFUL HERE. The handleRemoveResource() operation
// SHUFFLES the array we are using to tell us what resources need
// to be removed.
// You have been warned.
numResources = mResourceCnt;
for (i=numResources-1; i >= 0; i--)
{
pResource = mUnsorted[i];
// disconnect all inputs and outputs
if ((disconnectAllInputs(pResource) == FALSE) ||
(disconnectAllOutputs(pResource) == FALSE))
{
assert(FALSE);
return FALSE;
}
// remove the resource from the flow graph
if (handleRemoveResource(pResource) == FALSE)
{
assert(FALSE);
return FALSE;
}
// destroy the resource
delete pResource;
}
return TRUE;
}
void Node::disconnectAll()
{
disconnectAllInputs();
disconnectAllOutputs();
}
void AudioNodeOutput::disconnectAll() {
disconnectAllInputs();
disconnectAllParams();
}
// Handle the FLOWGRAPH_REMOVE_RESOURCE message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpFlowGraphBase::handleRemoveResource(MpResource* pResource)
{
UtlBoolean found;
int i;
UtlString* pDictKey;
UtlString* pKey;
// make sure this resource is part of this flow graph
if (pResource->getFlowGraph() != this)
{
Zprintf("handleRemoveResource:\n"
" pResource=0x%p, pResource->getFlowGraph()=0x%p, this=0x%p\n",
pResource, (pResource->getFlowGraph()), this, 0,0,0);
assert(FALSE);
return FALSE;
}
// remove all input links from this resource
if (disconnectAllInputs(pResource) == FALSE)
{
assert(FALSE);
return FALSE;
}
// remove all output links from this resource
if (disconnectAllOutputs(pResource) == FALSE)
{
assert(FALSE);
return FALSE;
}
// remove the entry from the dictionary for this resource
OsSysLog::add(FAC_MP, PRI_DEBUG, "MpFlowGraphBase::handleRemoveResource %s\n",
pResource->getName().data());
pKey = new UtlString(pResource->getName());
pDictKey = (UtlString*) mResourceDict.remove(pKey);
delete pKey;
if (pDictKey == NULL)
{
assert(FALSE); // no entry found for the resource
return FALSE;
}
delete pDictKey; // get rid of the dictionary key for the entry
// remove the resource from the unsorted array of resources for this graph
found = FALSE;
for (i=0; i < mResourceCnt; i++)
{
if (found)
{ // shift entries following the
mUnsorted[i-1] = mUnsorted[i]; // deleted resource down by one
}
else if (mUnsorted[i] == pResource)
{
found = TRUE;
mUnsorted[i] = NULL; // clear the entry
}
}
if (!found)
{
assert(FALSE); // didn't find the entry
return FALSE;
}
pResource->setFlowGraph(NULL); // remove the reference to this flow graph
mResourceCnt--;
mUnsorted[mResourceCnt] = NULL;
mRecomputeOrder = TRUE;
return TRUE;
}
