CTransInPlaceFilter::DecideBufferSize (Windows CE 5.0)
Determines the size of the transport buffer.
HRESULT DecideBufferSize(IMemAllocator* pAlloc,ALLOCATOR_PROPERTIES* pProperties);
Parameters
- pAlloc
Pointer to the IMemAllocator object used by the output pin. - pProperties
Requested allocator properties for count, size, and alignment, as specified by the ALLOCATOR_PROPERTIES structure.
Return Values
Returns NOERROR if successful; otherwise, returns an HRESULT value indicating the error.
HRESULT can be one of the following standard constants, or other values not listed.
| Value | Description |
|---|---|
| E_FAIL | Failure. |
| E_POINTER | Null pointer argument. |
| E_INVALIDARG | Invalid argument. |
| E_NOTIMPL | Method is not supported. |
Remarks
This member function overrides the CTransformFilter::DecideBufferSize member function. It is called when the filter must provide its own allocator. Allocator requirements are obtained from the filter's input pin and passed to the output pin.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements.
For more information, see Setting Up the Build Environment.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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