On Fri, Apr 17, 2009 at 4:15 PM, Guennadi Liakhovetski
<g.liakhovetski@xxxxxx> wrote:
> On Fri, 17 Apr 2009, Dongsoo, Nathaniel Kim wrote:
>
>> Hi Guennadi,
>>
>> On Fri, Apr 17, 2009 at 4:00 PM, Guennadi Liakhovetski
>> <g.liakhovetski@xxxxxx> wrote:
>> > On Fri, 17 Apr 2009, Dongsoo, Nathaniel Kim wrote:
>> >
>> >> 1. make preview device a video output
>> >> => it makes sense. but codec path also has dedicated DMA to frame buffer.
>> >> What should we do with that? I have no idea by now.
>> >
>> > Add a V4L2_CAP_VIDEO_OVERLAY capability and if the user requests
>> > V4L2_BUF_TYPE_VIDEO_OVERLAY - configure direct output to framebuffer?
>> >
>>
>> OK that's an idea. Then we can use preview as video output device and
>> codec device as a capture device with overlay capability.
>
> Actually, if I interpret the "Camera interface overview" figure (20-1)
> correctly, both capture and output channels have the overlay capability,
> so, you can enable it for both of them and configure the respective one
> accordingly.
You are right. both of them can have overlay capability. I just forgot
that It could be configured like that. Thank you.
>
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
>
--
========================================================
DongSoo, Nathaniel Kim
Engineer
Mobile S/W Platform Lab.
Digital Media & Communications R&D Centre
Samsung Electronics CO., LTD.
e-mail : dongsoo.kim@xxxxxxxxx
dongsoo45.kim@xxxxxxxxxxx
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