FrameQueueBuffer

The FrameQueueBuffer is the interface for buffers used by the FrameQueueSink and the FrameSnapSink. IF you want to implement your own FrameQueueBuffer to queue in FrameQueueSink or FrameSnapSink, you derived from the FrameQueueUserBuffer class.

There are multiple ways to create instances of FrameQueueBuffer:

Call the free function createFrameQueueBuffer
Call FrameQueueSink::allocAndQueueBuffers to create buffers with the frame type required by the FrameQueueSink and put them into the sink's input queue.
Call FrameSnapSink::allocAndQueueBufferCache to create buffers with the frame type required by the FrameSnapSink, and directly make them available for use by the sink.

The buffer lifetimes are managed by reference counting, therefore it is important to always use tFrameQueueBufferPtrs to hold them. The memory will be reclaimed once the last reference is destroyed.

Information

    Header File: tisudshl.h
    Namespace: DShowLib
    Introduced in version 3.5

Inheritance

    IFrame
            FrameQueueBuffer
                    FrameQueueUserBuffer

Methods

	Method		Description


	getUserPointer		Returns the userPtr argument that was passed to createFrameQueueBuffer when creating this buffer.

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