ALLOCATOR_PROPERTIES structure
Applies to: desktop apps only
The ALLOCATOR_PROPERTIES structure describes an allocator's count, size, alignment, and prefix properties.
Syntax
typedef struct _AllocatorProperties {
long cBuffers;
long cbBuffer;
long cbAlign;
long cbPrefix;
} ALLOCATOR_PROPERTIES;
Members
- cBuffers
-
Number of buffers created by the allocator.
- cbBuffer
-
Size of each buffer in bytes, excluding any prefix.
- cbAlign
-
Alignment of the buffer; buffer start will be aligned on a multiple of this value.
- cbPrefix
-
Each buffer is preceded by a prefix of this many bytes.
Remarks
The IMediaSample::GetPointer method returns a pointer to the beginning of the buffer, not including the prefix bytes designated by cbPrefix.
The alignment is applied to the prefix data, if any. If a nonzero prefix is used, the beginning of the prefix is aligned according to cbAlign.
Requirements
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See also
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Build date: 3/6/2012