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CTransInPlaceFilter::DecideBufferSize (Compact 2013)

  • [アーティクル]

3/26/2014

Determines the size of the transport buffer.

Syntax

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 Value

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

Header

dshow.h,
Streams.h

Library

ole32.lib,
Ole32auth.lib,
Strmbase.lib,
Strmiids.lib,
uuid.lib

See Also

Reference

CTransInPlaceFilter Class