Create VPIImage out of NvBuffer with V4L2_MEMORY_USERPTR memory type

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
#1

Hi there,

I can create VPIImage from NvBuffer, given it is has V4L2_MEMORY_MMAP memory type, and therefore has valid DMABUF FD, e.g.

vpiImageCreateNvBufferWrapper(buffer.planes[0].fd, &params, 0, &img)

However I cannot achieve this for NvBuffer which has V4L2_MEMORY_USERPTR memory type and therefore has no valid DMABUF FD:

buffer.planes[0].fd == -1

How can I wrap NvBuffer with V4L2_MEMORY_USERPTR into VPIImage?

#3

Hi,
This is not a supported case. The buffer has to be in V4L2_MEMORY_MMAP or V4L2_MEMORY_DMABUF.

#4

Thank you for clarification.

#6

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