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i.MX8 ISI and CSC

Question asked by Wayne Kuo on Sep 24, 2019
Latest reply on Sep 24, 2019 by igorpadykov

Hi Experts,

 

I have questions for ISI and CSC of i.MX8.

According to RM, ISI has a function for color space conversion and can do YUV-to-RGB or RGB-to-YUV conversion.

 

Now I have a camera (OV10635) output to i.MX8 MIPI-CSI and the pixel format is set as YUYV. I want to use ISI to do a YUV-to-RGB conversion.

However, I can't get the right color on my HDMI display, even I use mx8_v4l2_cap_drm tool to save buffer to a file and use online viewer to display the file. 

 

Here is my questions:

1. Is there any register can control the input YUV sequence? Like, YUYV, YVYU, UYVY or VYUY?

2. My Camera output seems be 8-bits YUYV (32-bit format), is that available for ISI input?

3. My ISI input format setting is V4L2_PIX_FMT_YUV32, is that right for my case?

4. According to CSC Chapter, I can do a YUV-to-RGB conversion, but what is the output format? Like, RGBA, BGRA, ARGB, ABGR, RGB or BGR? And what is the format, 32-bits or 24-bits?

 

Thanks and Regards,

Wayne Kuo

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