CPullPin Class
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4/8/2010
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This class is provided to allow a filter downstream from the source to create a thread and pull a media stream from an asynchronous source filter that supports the IAsyncReader interface.
Typically, this class is implemented on the input pin of a parser filter, because the DirectShow asynchronous reader filter just reads a media stream from a file and provides no parsing.
Protected Data Members
| Member | Description |
|---|---|
m_pAlloc |
Pointer to the IMemAllocator interface used by the connection. |
Member Functions
| Member function | Description |
|---|---|
Instructs the pin to start pulling data from the asynchronous reader. |
|
Aligns a LONGLONG value down to the next LONG boundary. |
|
Aligns a LONGLONG value up to the next LONG boundary. |
|
Initiates a connection from this pin to the asynchronous reader. |
|
Constructs a CPullPin object. |
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Breaks a connection to the asynchronous reader. |
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Retrieves the total duration of the media stream. |
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Retrieves the asynchronous reader interface. |
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Instructs the pin to stop pulling data from the asynchronous reader. |
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Sets the start and stop times of the media stream. |
Overrideable Member Functions
| Member function | Description |
|---|---|
Flushes this pin and all downstream pins. |
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Proposes an allocator for use by the asynchronous reader. |
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Signals end of flushing operation. |
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Sends end-of-stream notification downstream. |
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Handles run-time errors that caused pulling to stop. |
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Handles the arrival of data from the asynchronous reader. |
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment |