cupvaGatherScatterDataFlowParams_t

Defined in src/host/c_api/include/detail/workloads/cupva_host_dataflow.h

struct cupvaGatherScatterDataFlowParams_t

Parameters structure for CupvaGatherScatterDataFlowSetParams.

This structure is used to setup a GatherScatterDataFlow with CupvaGatherScatterDataFlowSetParams. The fields in this structure map to methods in cupva::GatherScatterDataFlow.

Public Members

cupvaParameter_t *handler

Parameter referring to the handler in VMEM to use for triggering.

int32_t numTilesPerTrigger

Maximum number of tiles which this GSDF will transfer each trigger. Must be <= 32.

cupvaBufferType_t bufferType

The type of the buffer provided as ext pointer. Only used when OffsetPointer is specified. Defaults to CUPVA_RAW.

const void *ptrSrc

Source device pointer in external memory. Only one of ptrSrc, opSrc, ptrDst and opDst should be specified, the rest should be NULL.

cupvaOffsetPointer_t *opSrc

Source offset pointer in external memory. Only one of ptrSrc, opSrc, ptrDst and opDst should be specified, the rest should be NULL.

void *ptrDst

Destination offset pointer in external memory. Only one of ptrSrc, opSrc, ptrDst and opDst should be specified, the rest should be NULL.

cupvaOffsetPointer_t *opDst

Destination offset pointer in external memory. Only one of ptrSrc, opSrc, ptrDst and opDst should be specified, the rest should be NULL.

int32_t bpp

Bytes per pixel, must be 1, 2 or 4.

int32_t extWidth

Width of external buffer in pixels.

int32_t extHeight

Height of external buffer in pixels.

int32_t extLinePitch

Line pitch of external buffer in pixels.

bool allowNonUniformLP

A flag to allow non-uniform line pitches. If this is set to true, the line pitch of each plane in PlanarGeometry may be different.

struct PlanarGeometry *geom

Planar geometry info of the external buffer.

int32_t tileWidth

Width of tile in pixels.

int32_t tileHeight

Height of tile in pixels.

cupvaPadModeType_t padMode

Padding mode for out of bounds accesses. If a read tile would access out-of-bounds according to the image dimensions, DMA engine is used to generate padding instead. Note that padding only applies to cupvaGSDFUpdateTiles.

int32_t padVal

Padding value to use for constant padding mode.