// Handles the SET_FOCUS message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleSetFocus(MpFlowGraphBase* pFlowGraph)
{
if (pFlowGraph != NULL)
{
if (!isManagedFlowGraph(pFlowGraph) ||
!pFlowGraph->isStarted())
{
Nprintf("MpMT::handleSetFocus(0x%X) INVALID: %smanaged, %sstarted\n",
(int) pFlowGraph,
(int) (isManagedFlowGraph(pFlowGraph)? "" : "NOT "),
(int) (pFlowGraph->isStarted() ? "" : "NOT "), 0,0,0);
return FALSE; // we aren't managing this flow graph, return FALSE
}
}
if (mpFocus != NULL)
{
#ifndef DISABLE_LOCAL_AUDIO
// stop input stream
MpAudioDriverManager* pAudioManager = MpAudioDriverManager::getInstance();
if (pAudioManager)
{
pAudioManager->abortInputStream();
}
#endif
// remove focus from the flow graph that currently has it
Nprintf("MpMT::handleSetFocus(0x%X): removing old focus (0x%X)\n",
(int) pFlowGraph, (int) mpFocus, 0,0,0,0);
mpFocus->loseFocus();
}
mpFocus = pFlowGraph;
if (mpFocus != NULL)
{
// try to give focus to the indicated flow graph
if (OS_SUCCESS != mpFocus->gainFocus())
{
Nprintf("MpMT::handleSetFocus(0x%X): attempt to give focus FAILED\n",
(int) pFlowGraph, 0,0,0,0,0);
mpFocus = NULL;
return FALSE; // the flow graph did not accept focus.
}
#ifndef DISABLE_LOCAL_AUDIO
// start input stream
MpAudioDriverManager* pAudioManager = MpAudioDriverManager::getInstance();
if (pAudioManager)
{
pAudioManager->startInputStream();
}
#endif
Nprintf("MpMT::handleSetFocus(0x%X): attempt to give focus SUCCEEDED\n",
(int) pFlowGraph, 0,0,0,0,0);
}
return TRUE;
}
// Handles the UNMANAGE message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleUnmanage(MpFlowGraphBase* pFlowGraph)
{
OsLock lock(mMutex);
UtlBoolean found;
OsStatus res;
if (pFlowGraph == mpFocus)
handleSetFocus(NULL);
if (!isManagedFlowGraph(pFlowGraph)) {
return FALSE; // flow graph is not presently managed, return FALSE
}
if (pFlowGraph->getState() != MpFlowGraphBase::STOPPED)
{
handleStop(pFlowGraph);
// since we have "unmanaged" this flow graph, we need to coerce the
// flow graph into processing its messages so that it gets the
// indication that it has been stopped.
res = pFlowGraph->processNextFrame();
assert(res == OS_SUCCESS);
}
UtlPtr<MpFlowGraphBase> ptr(pFlowGraph);
// deletes the old UtlPtr we allocated earlier
found = mManagedFlowGraphs.destroy(&ptr);
return found;
}
// Handles the SET_FOCUS message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleSetFocus(MpFlowGraphBase* pFlowGraph)
{
if (pFlowGraph != NULL)
{
if (!isManagedFlowGraph(pFlowGraph) ||
!pFlowGraph->isStarted())
{
Nprintf("MpMT::handleSetFocus(0x%p) INVALID: %smanaged, %sstarted\n",
pFlowGraph,
(int) (isManagedFlowGraph(pFlowGraph)? "" : "NOT "),
(int) (pFlowGraph->isStarted() ? "" : "NOT "), 0,0,0);
return FALSE; // we aren't managing this flow graph, return FALSE
}
}
if (mpFocus != NULL)
{
// remove focus from the flow graph that currently has it
Nprintf("MpMT::handleSetFocus(0x%p): removing old focus (0x%p)\n",
pFlowGraph, mpFocus, 0,0,0,0);
mpFocus->loseFocus();
}
mpFocus = pFlowGraph;
if (mpFocus != NULL)
{
// try to give focus to the indicated flow graph
if (OS_SUCCESS != mpFocus->gainFocus())
{
Nprintf("MpMT::handleSetFocus(0x%p): attempt to give focus FAILED\n",
pFlowGraph, 0,0,0,0,0);
mpFocus = NULL;
return FALSE; // the flow graph did not accept focus.
}
Nprintf("MpMT::handleSetFocus(0x%p): attempt to give focus SUCCEEDED\n",
pFlowGraph, 0,0,0,0,0);
}
return TRUE;
}
// Handles the UNMANAGE message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleUnmanage(MpFlowGraphBase* pFlowGraph)
{
OsLock lock(mMutex);
UtlBoolean found;
int i;
OsStatus res;
if (pFlowGraph == mpFocus)
handleSetFocus(NULL);
if (!isManagedFlowGraph(pFlowGraph)) {
return FALSE; // flow graph is not presently managed, return FALSE
}
if (pFlowGraph->getState() != MpFlowGraphBase::STOPPED)
{
handleStop(pFlowGraph);
// since we have "unmanaged" this flow graph, we need to coerce the
// flow graph into processing its messages so that it gets the
// indication that it has been stopped.
res = pFlowGraph->processNextFrame();
assert(res == OS_SUCCESS);
}
found = FALSE;
for (i=0; i < mManagedCnt; i++)
{
if (found)
{ // compact the managed flow graphs array
mManagedFGs[i-1] = mManagedFGs[i];
}
if (mManagedFGs[i] == pFlowGraph)
{
// PRINTF("MpMediaTask::handleUnmanage: Removing flow graph # %d!\n", i, 0,0,0,0,0);
found = TRUE;
mManagedFGs[i] = NULL;
}
}
if (!found) { // we aren't managing this flow graph,
return FALSE; // return FALSE
}
mManagedCnt--;
return TRUE;
}
// Handles the START message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleStart(MpFlowGraphBase* pFlowGraph)
{
OsStatus res;
if (!isManagedFlowGraph(pFlowGraph))
return FALSE; // flow graph is not presently managed, return FALSE
if (pFlowGraph->isStarted()) // if already started, return FALSE
return FALSE;
res = pFlowGraph->start();
assert(res == OS_SUCCESS);
mStartedCnt++;
return TRUE;
}
// Handles the MANAGE message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleManage(MpFlowGraphBase* pFlowGraph)
{
OsLock lock(mMutex);
if (isManagedFlowGraph(pFlowGraph)) { // we are already managing
// PRINTF("MpMediaTask::handleManage: ERROR: flow graph already managed!\n", 0,0,0,0,0,0);
return FALSE; // the flow graph, return FALSE
}
// PRINTF("MpMediaTask::handleManage: Adding flow graph # %d!\n", mManagedCnt, 0,0,0,0,0);
// add flowgraph to hashbag
UtlContainable* pRes = mManagedFlowGraphs.insert(new UtlPtr<MpFlowGraphBase>(pFlowGraph));
assert(pRes);
return pRes != NULL;
}
// Handles the STOP message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleStop(MpFlowGraphBase* pFlowGraph)
{
OsStatus res;
if (pFlowGraph == mpFocus)
handleSetFocus(NULL);
if (!isManagedFlowGraph(pFlowGraph))
return FALSE; // flow graph is not presently managed, return FALSE
if (pFlowGraph->getState() == MpFlowGraphBase::STOPPED)
return FALSE; // if already stopped, return FALSE
res = pFlowGraph->stop();
assert(res == OS_SUCCESS);
mStartedCnt--;
return TRUE;
}
// Handles the MANAGE message.
// Returns TRUE if the message was handled, otherwise FALSE.
UtlBoolean MpMediaTask::handleManage(MpFlowGraphBase* pFlowGraph)
{
OsLock lock(mMutex);
if (mManagedCnt >= mMaxFlowGraph) {
// PRINTF("MpMediaTask::handleManage: ERROR: too many flow graphs!\n", 0,0,0,0,0,0);
return FALSE;
}
if (isManagedFlowGraph(pFlowGraph)) { // we are already managing
// PRINTF("MpMediaTask::handleManage: ERROR: flow graph already managed!\n", 0,0,0,0,0,0);
return FALSE; // the flow graph, return FALSE
}
// PRINTF("MpMediaTask::handleManage: Adding flow graph # %d!\n", mManagedCnt, 0,0,0,0,0);
mManagedFGs[mManagedCnt] = pFlowGraph;
mManagedCnt++;
return TRUE;
}