md_frame_roi Struct Reference

Collaboration diagram for md_frame_roi:

Data Fields
md_frame_roi_header *	header
void *	data
uns32	dataSize
void *	extMdData
uns16	extMdDataSize

Detailed Description

This is a helper structure that is used to decode the md_frame_roi_header. Since the header cannot contain any pointers, PVCAM will calculate all information using offsets from frame & ROI headers.

The structure must be created using the pl_md_create_frame_struct function. Please note the structure keeps only pointers to data residing in the image buffer. Once the buffer is deleted the contents of the structure become invalid.

Field Documentation

data

void* md_frame_roi::data

Points to the ROI image data.

dataSize

uns32 md_frame_roi::dataSize

Size of the ROI image data in bytes.

extMdData

void* md_frame_roi::extMdData

Points directly to ext. metadata data within the buffer.

extMdDataSize

uns16 md_frame_roi::extMdDataSize

Size of the ext. metadata buffer.

header

md_frame_roi_header* md_frame_roi::header

Points directly to the header within the buffer.