[PATCH 1/2] media: Add mem2mem deinterlacing driver.

[javier Martin]

Hi Hans,
thank you for your comments.

On 11 July 2012 11:45, Hans Verkuil <hverkuil at xs4all.nl> wrote:
> Hi Javier!
>
> Thanks for the patch.
>
> On Wed 11 July 2012 10:55:03 Javier Martin wrote:
>> Some video decoders such as tvp5150 provide separate
>> video fields (V4L2_FIELD_SEQ_TB). This driver uses
>> dmaengine to convert this format to V4L2_FIELD_INTERLACED_TB
>> (weaving) or V4L2_FIELD_NONE (line doubling)
>
> Which field is used for the line doubling? Top or bottom? Or is each field
> doubled, thus doubling the framerate?

No, just top field is used.
I don't know if it's worth defining a new field format for doubling fields.

> I also recommend adding SEQ_BT/INTERLACED_BT support: NTSC transmits the bottom
> field first, so it is useful to have support for that.

Adding that is quite easy but I cannot test it.
Maybe someone could add it later?


-- 
Javier Martin
Vista Silicon S.L.
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