 Important: |
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| This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist. |
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 IAsyncReaderinterface.
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 |
|---|---|
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m_pAlloc |
Pointer to the IMemAllocatorinterface used by the connection. |
Member Functions
| Member function | Description |
|---|---|
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Instructs the pin to start pulling data from the asynchronous reader. |
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Aligns a LONGLONGvalue down to the next LONGboundary. |
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Aligns a LONGLONGvalue up to the next LONGboundary. |
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Initiates a connection from this pin to the asynchronous reader. |
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Constructs a CPullPinobject. |
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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 |
|---|---|
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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 |