Re: Exclusive use of OMAP3 TI ISP Resizer

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To Aguirre Rodriguez, Sergio Alberto <saaguirre@xxxxxx> wrote:
>> Hi
>>
>> Current TI ISP implementation doesn't allow exclusive use of Resizer,
>> I mean CCDC->Resizer.
>
> Yeah, we haven't added that functionality yet to the driver because we didn't have the need with our customers yet. But as more people like you are demanding this, then a solution for implementing it shall be discussed.
>

What kind of complexity/effort involved using just the resizer?

As my sensor gives YUV 4:2:2, I can directly feed this to the resizer
pipeline. To kick start could you please share a quick hack?  I can
then take it forward.

>>
>> Any specific reason why CCDC->Preview->Resizer path has been taken?
>> Please share the background of this decision.
>
> The reason on deciding about this ISP datapath is because we wanted to emphasize the use of the OMAP3 ISP, instead of the use of a sensor internal ISP.
>

I can see from your design that you have character device wrapper to
use Resizer, can we fit this hack with CCDC->Resizer logic? this is my
quick guess, correct If I am wrong.
>>
>> My sensor gives only YUV data, but the Preview pipeline is happy only
>> with RAW Bayer.
>> Is this a hardware limitation?
>
> Yeah, the ISP Preview module can only convert from 10-bit Bayer data to YCbCr 4:2:2 data (YUV).
>
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