AGX Xavier DMA

Hello, we are using an HDMI to MIPI chip on AGX Xavier, connected to the CSI interface of AGX Xavier.
The image format output from the HDMI to MIPI chip is UYVY(YUV422), is it possible to move the image format to I420(YUV420) via DMA or other DMA from CSI?
For example, the DMA establishes a mapping relationship when moving, and the UYVY drops 1 set of YU for every 4 Y during the move to get I420.
Does AGX Xavier support this type of DMA handling?
您好,我们在AGX Xavier上使用了一个HDMI转MIPI的芯片,接到了AGX Xavier的CSI接口上。
HDMI转MIPI芯片输出的图像格式为UYVY(YUV422),请问能不能通过CSI的DMA或者其他的DMA将图像格式搬成I420(YUV420)?
比如DMA在搬运时,建立一个映射关系,UYVY在搬运过程中每4个Y丢掉1组YU,从而得到I420。
请问AGX Xavier支持这种DMA搬运方式吗?

The reason we have this need is that for project use we need the I420 rather than the UYVY image format.
我们有这种需求的原因是:在项目使用中,我们需要I420而非UYVY的图像格式。

I would suggest use nvvidconv or V4L2 Video Converter of MMAPI to convert it to I420. The pipeline could be like.

HDMI → NVCSI → VI → nvvidconv

https://docs.nvidia.com/jetson/l4t-multimedia/group__V4L2Conv.html

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.