soc-camera : add new flags

soc-camera : add new flags

[Matthieu CASTET]

Hi,

I am trying to use soc-camera for our camera IP.

Our IP allow to chose if the synchronization is done according to  ITU-R
BT601 or ITU-R BT656.
Can new flag be added to negotiate the synchronization standard between
host and sensor.

Our IP also allow to select if the data on the bus is transmitted on the
CbYCrY order or YCbYCr order.
Can new flag be added to negotiate the synchronization standard between
host and sensor.


Thanks


Matthieu

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Re: soc-camera : add new flags

[Guennadi Liakhovetski]

On Thu, 18 Dec 2008, Matthieu CASTET wrote:

> Hi,
> 
> I am trying to use soc-camera for our camera IP.
> 
> Our IP allow to chose if the synchronization is done according to  ITU-R
> BT601 or ITU-R BT656.
> Can new flag be added to negotiate the synchronization standard between
> host and sensor.

Yes, sure, send a patch. Just add required 
SOCAM_SYNC_{GATED,NONGATED,BT601,BT656} (or whatever you'd like to call 
them) flags, and extend soc_camera_bus_param_compatible() to verify them.

> Our IP also allow to select if the data on the bus is transmitted on the
> CbYCrY order or YCbYCr order.
> Can new flag be added to negotiate the synchronization standard between
> host and sensor.

Different statement but the same question? If you wanted to ask about 
colour format then just use different YUYV / UYVY / ... fourcc codes.

Thanks
Guennadi
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Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer

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Re: soc-camera : add new flags

[Matthieu CASTET]

Guennadi Liakhovetski a écrit :
> On Thu, 18 Dec 2008, Matthieu CASTET wrote:
> 
>> Hi,
>>
>> I am trying to use soc-camera for our camera IP.
>>
>> Our IP allow to chose if the synchronization is done according to  ITU-R
>> BT601 or ITU-R BT656.
>> Can new flag be added to negotiate the synchronization standard between
>> host and sensor.
> 
> Yes, sure, send a patch. Just add required 
> SOCAM_SYNC_{GATED,NONGATED,BT601,BT656} (or whatever you'd like to call 
> them) flags, and extend soc_camera_bus_param_compatible() to verify them.
> 
Ok

>> Our IP also allow to select if the data on the bus is transmitted on the
>> CbYCrY order or YCbYCr order.
>> Can new flag be added to negotiate the synchronization standard between
>> host and sensor.
> 
> Different statement but the same question? If you wanted to ask about 
> colour format then just use different YUYV / UYVY / ... fourcc codes.
How do you differentiate color format of the bus and the color format
output by v4l ?

In our case the bus format can be YUYV or UYVY, but the host camera IP
can only output YUV422P/YUV420/YVU420.



Matthieu

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Re: soc-camera : add new flags

[Guennadi Liakhovetski]

On Thu, 18 Dec 2008, Matthieu CASTET wrote:

> Guennadi Liakhovetski a écrit :
> > On Thu, 18 Dec 2008, Matthieu CASTET wrote:
> > 
> >> Our IP also allow to select if the data on the bus is transmitted on the
> >> CbYCrY order or YCbYCr order.
> >> Can new flag be added to negotiate the synchronization standard between
> >> host and sensor.
> > 
> > Different statement but the same question? If you wanted to ask about 
> > colour format then just use different YUYV / UYVY / ... fourcc codes.
> How do you differentiate color format of the bus and the color format
> output by v4l ?
> 
> In our case the bus format can be YUYV or UYVY, but the host camera IP
> can only output YUV422P/YUV420/YVU420.

This is what our recently added format conversion infrastructure is for, 
basically your camera host driver is called on camera supported format 
enumeration for each camera format and it has to decide whether it 
supports that format and to which formats it can convert it. Both in-tree 
host drivers support this.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer

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