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How to adjust contrast for 2planes in DP for i.MX6DL

Question asked by yuuki on Jun 21, 2017
Latest reply on Jun 30, 2017 by Bio_TICFSL
Branched to a new discussion

Dear all,

 

In our system,
Fb1 is yuv format,fb0 is rgb32 format and use gragh alpha value.
so fb0 and fb1 display at the same time is possible.

 

Linux BSP is fsl-yocto-L4.1.15_1.2.0

We modify the ipu_disp.c file as follows.


DP_COM_CONF_CSC_DEF_BOTH should be used according to our system situation.

 

We tested two following contents.

 

1. dp_csc_array[2][1]:{DP_COM_CONF_CSC_DEF_BOTH, (void *)&rgb2rgb_coeff}
    => However fb1 color displays NG and  fb0 color displays OK.

2. dp_csc_array[2][1]:{DP_COM_CONF_CSC_DEF_BOTH, (void *)&ycbcr2rgb_coeff}
    => However fb1 color displays OK and fb0 color displays NG.


We want to know is it available to adjust contrast when fb1 and fb0 using gragh alpha value and displaying at the same time under condition choosing DP_COM_CONF_CSC_DEF_BOTH and rgb2rgb_coeff?
(fb1 is yuv format, fb0 is rgb32 format)

 

May I have any advice?

 

Best Regards,
Yuuki

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