COutputQueue.NewSegment method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The NewSegment method delivers a new segment to the input pin.
Syntax
HRESULT NewSegment(
REFERENCE_TIME tStart,
REFERENCE_TIME tStop,
double dRate
);
Parameters
-
tStart
-
Starting media position of the segment, in 100-nanosecond units.
-
tStop
-
End media position of the segment, in 100-nanosecond units.
-
dRate
-
Rate at which this segment should be processed, as a percentage of the original rate.
Return value
Returns an HRESULT value.
Remarks
If the object is using a thread, it queues the following items, in order:
- A NEW_SEGMENT control message.
- The segment data.
The NEW_SEGMENT message notifies the thread that the next item on the queue will contain segment data. The segment data is bundled in a structure, declared as follows:
struct NewSegmentPacket {
REFERENCE_TIME tStart;
REFERENCE_TIME tStop;
double dRate;
};
The thread calls the IPin::NewSegment method on the input pin, using the data given in the structure.
If the object is not using a thread, it calls the COutputQueue::SendAnyway method to deliver any pending samples. Then it calls IPin::NewSegment on the input pin.
Requirements
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