Camera Data Path of TX2

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi Nvidia,

I got confused from the Block Diagram provided by Nvidia ,

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  1. How Raw Video Data is transfered from CSI to H/W encoder?

I assume this the path, but i can’t find the exact path
CSI → VI → CPU → GPU → H/W

Kindly can anyone help me out to find how the data follows.

I have went through the sample codes(tegra_multimedia_api) & the docs nvl4t_docs.

2

Hi meRaza,
For tegra_multimedia_api\samples\10_camera_recording, it is
CSI camera input → camera ISP → DMA buffers → Video encode

3

Please check out this “Getting Started with the JetPack Camera API” PDF: [url]http://on-demand.gputechconf.com/gtc/2016/webinar/getting-started-jetpack-camera-api.pdf[/url]

The presentation was for TX1, but I think it most likely applies to TX2 as well.

External Media

tx1-camera-subsystem.png
tx1-camera-subsystem.png1519×1054 143 KB

4

Thanks Danel for quick reply .

It really helped me solve most of my confusion.
And I have few more quires

  1. for the tegra_multimedia_api\samples\12_camera_v4l2_cuda, IT has same path ? .

  2. for audio path will be I2s → device memory → Host Memory → APC . Is this correct ?

5

Thanks jkjung13 , The document you provided has good info , which I can use for development of product using TX2 libargus .