CSALLOCATOR Values (Windows Embedded CE 6.0)
1/6/2010
The following table shows macro values that are used to describe allocator settings.
| Value | Description |
|---|---|
CSALLOCATOR_FLAG_ALLOCATOR_EXISTS |
Indicates that the allocator exists. |
CSALLOCATOR_FLAG_CAN_ALLOCATE |
Indicates that the filter is capable of allocating device-specific memory. See additional information below. |
CSALLOCATOR_FLAG_DEVICE_SPECIFIC |
Indicates that the physical memory type is device-specific. |
CSALLOCATOR_FLAG_INSIST_ON_FRAMESIZE_RATIO |
Indicates that the frame ratio defined in CS_COMPRESSION must be maintained. |
CSALLOCATOR_FLAG_PARTIAL_READ_SUPPORT |
Indicates that the filter supports partial fill of frames. |
CSALLOCATOR_OPTIONF_COMPATIBLE |
Indicates that the framing options of the allocator being created are compatible with the downstream allocator. This option is typically specified when an in-place modifier is assigned an allocator for copy buffers. If the filter is not required to modify a given frame, it may submit the frame to the downstream filter without allocating an additional frame from the downstream allocator when this option is specified. |
CSALLOCATOR_OPTIONF_SYSTEM_MEMORY |
Indicates the use of system memory for allocations. When specified, the allocator must allocate memory from the pool as specified in the PoolType member. Otherwise, it is assumed that the sink provides a system address mapping to on-board RAM or other forms of storage on the device. |
CSALLOCATOR_REQUIREMENTF_FRAME_INTEGRITY |
Indicates that the connection point requires that downstream filters maintain the data integrity of specified frames. |
CSALLOCATOR_REQUIREMENTF_INPLACE_MODIFIER |
Indicates that the connection point can perform an in-place modification. |
CSALLOCATOR_REQUIREMENTF_MUST_ALLOCATE |
Indicates that the connection point requires that it allocate any frames sent. |
CSALLOCATOR_REQUIREMENTF_PREFERENCES_ONLY |
Indicates that the Requirements flags are preferences only and the connection point is able to allocate frames that do not meet those specifications. |
CSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY |
Indicates that the connection point requires system memory for allocations. If this option is not set, it is assumed that the sink provides a system address space mapping to on-board RAM or other forms of storage on the device. |
Requirements
| Header | cs.h |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |