Saturday, March 15, 2008

Add Worker Thread in Source Filter derived from CSource class

How to create threads within CSource derived class.
within PushDesktop Source Filter,I created the thread. within this thread, I incremented the integer.within FillBuffer() fn, I displayed the integer value.
ThreadProc() {
i++; SetEvent( m_hEvent); }
FillBuffer() { WaitForSingleObject( m_hEvent);
}
the following code is not working ;
ThreadProc() {
while(true) {
dwWaitObject = WaitForSingleObject(m_hStopEvent, 5);
if(dwWaitObject == WAIT_OBJECT_0) { return 0; }
i++;
SetEvent( m_hEvent);
}
}
FillBuffer()
{
WaitForSingleObject( m_hEvent);
}
ThreadProc() {
i++; SetEvent( m_hEvent); }
FillBuffer() { WaitForSingleObject( m_hEvent);
}

At every one second, the video renderer waits for data from the source Filter. So if u modify thedwWaitObject = WaitForSingleObject(m_hStopEvent, 5); as
dwWaitObject = WaitForSingleObject(m_hStopEvent, 2); then it is working.
we must not take that much of time ...
Try with one more thing:
ThreadProc() { ThreadCB(); }
ThreadCB() { WaitForSingleObject(); printf("\n sundar");
}

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