i.MX Processors中的主题 Re: imx6q video display problem

imx6q video display problem

lampo — Thu, 17 Nov 2016 05:46:48 GMT

Hello, I want to preview my video on HDMI LCD, my cmos sensor is 8 bit grayscale, 752x480. and I tested it with mxc_v4l2_overlay.c from imx_test package.

I find the image show in LCD in not the same as the sensor output, i.e. smaller , copied to 16 same images, green background! (see the attachment)

I want to know if grayscale image direct preview is supported by imx6q? if yes, how should I modified the driver(I have modified the driver for capture grayscale sensor image, but not for preview)?

or do I have to first capture it to mem,then output to LCD (mxc_v4l2_output.c)?

thanks a lot !

Re: imx6q video display problem

lampo — Mon, 21 Nov 2016 01:04:33 GMT

Does anyone know how to modify mxc_v4l2_output.c to display gray image on LCD? thanks a lot.

Re: imx6q video display problem

joanxie — Tue, 13 Dec 2016 08:45:53 GMT

I have a sample code for jpeg camera sensor, this is for 8bit grayscale, but Im not sure if I can uploade here, you can create a ticket, then I send to you.

https://community.nxp.com/docs/DOC-329745

Re: imx6q video display problem

lampo — Tue, 13 Dec 2016 10:11:25 GMT

thanks a lot, Joan. Could you please send to guanlinbo@gzrobot.com ? really appreciated!