How does the data above DMA carry out zero-copy encoding?

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hello
I refer to the coding example in the tegra_multimedia_api. I want to directly map to the encoded capture_plane via DMA. How do I use the zero-copy encoding?
Is there any way to get video data in DMA into the encoder without incurring extra overhead?

2

I want to convert video data in DMA to EGLStream data and then import it into gstreamer. Is there any way to do this at low cost?

3

Hi,

Please check tegra_multimedia_api\samples\v4l2cuda in multimedia API first.
It demonstrates v4l2 source → CUDA buffers, which should be helpful for your use case.

Thanks.