How to use device memory by cuda runtime API when decode video?

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

I use the Xavier device for video decoding, and want to use cuda runtime API do somethings. How do I get device memory pointer by DMABUF FD of NvBuffer.

3

Hi,
We have the demo code in jetson_multimedia_api samples. Please take a look at cuda_postprocess() in

/usr/src/jetson_multimedia_api/samples/12_camera_v4l2_cuda/
5

Hi,
I have the same question, and I want to avoid performance loss.
Does the device memory have to be accessed by EGLImage? Is there any other direct way?

6

Hi,
For getting data pointer to the CUDA buffer, it has to be accessed by EGLImage, as demonstrated in cuda_postprocess().