KSALLOCATOR_FRAMING_EX - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ks.h
typedef struct {
ULONG CountItems;
ULONG PinFlags;
KS_COMPRESSION OutputCompression;
ULONG PinWeight;
KS_FRAMING_ITEM FramingItem[1];
} KSALLOCATOR_FRAMING_EX, *PKSALLOCATOR_FRAMING_EX;
View the official Windows Driver Kit DDI referenceNo description available.
The KSALLOCATOR_FRAMING_EX structure is the AVStream replacement for KSALLOCATOR_FRAMING. KSALLOCATOR_FRAMING_EX defines allocator requirements on a pin in a kernel level filter.
CountItemsSpecifies the number of framing items that are present in the FramingItem array.
PinFlagsReserved, set to zero.
OutputCompressionPoints to a structure of type KS_COMPRESSION that defines the frame ratio for transforms that change the size of a frame.
PinWeightThis pin framing's weight graph-wide. Reserved, set to zero.
FramingItemAn array of KS_FRAMING_ITEM structures specifying the actual framing items.
A minidriver can also use DECLARE_SIMPLE_FRAMING_EX to declare an extended framing structure in line with the original structure. This macro is defined in Ks.h as follows:
#define DECLARE_SIMPLE_FRAMING_EX(FramingExName, MemoryType, Flags, Frames, Alignment, MinFrameSize, MaxFrameSize) const KSALLOCATOR_FRAMING_EX FramingExName
DECLARE_SIMPLE_FRAMING_EX declares a KSALLOCATOR_FRAMING_EX structure called FramingExName with the specified memory type (often either STATIC_KS_TYPE_DONT_CARE or one of the kernel paged or nonpaged GUIDs). The Frames and Alignment fields of the macro correspond to the KSALLOCATOR_FRAMING. MinFrameSize and MaxFrameSize ensure that frames are within a specific size range. Flags corresponds to the OptionsFlags and RequirementsFlags in KSALLOCATOR_FRAMING.