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CBaseAllocator::Alloc (Compact 2013)

3/26/2014

Allocates a media sample object.

Syntax

HRESULT Alloc(void); 

Parameters

None.

Return Value

Returns an HRESULT value.

Remarks

Override this member function to allocate memory, instantiate CMediaSample objects, and add them to the free list represented by the m_lFree data member. The CMemAllocator::Alloc member function is an example of an override of this member function. It calls this member function first to ensure that allocator properties have been set.

This member function is called from the CBaseAllocator::Commit member function when entering the active state. The default implementation returns an error value if the IMemAllocator::SetProperties method has not been called yet, and checks that there are no outstanding buffers.

Requirements

Header

dshow.h,
Streams.h

Library

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

See Also

Reference

CBaseAllocator Class