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About V4l2 overlay sequence

DISCUSSION xie 3 participants 3 messages Jun 10, 2009 – Jun 17, 2009 Media (V4L/DVB)

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#0 lore raw

Dear all ~~

With your help I have implemented the preview with capture interface ~~ Now i want to implement the preview with ovelay , and my camera support s ovelay ~
Who can tell me where I can find the document about ovelay sequcence ~ ? Or does there have a standard example source code ~ ?

Thanks a lot ~

Best regards

#1 lore raw

It seems to be totally described in v4l2 api specification document.

The document is saying like this:
VIDIOC_QUERYCAP
video input and video standard ioctls
VIDIOC_G_FBUF and VIDIOC_S_FBUF
VIDIOC_G_FMT/S_FMT/TRY_FMT
VIDIOC_OVERLAY

Take a look at the document for detailed usage.
Cheers,

Nate

Quoted 13 lines · xie

Dear all ~~

With your help I have implemented the preview with capture interface ~~ Now i want to implement the preview with ovelay , and my camera support s ovelay ~
Who can tell me where I can find the document about ovelay sequcence ~ ? Or does there have a standard example source code ~ ?

Thanks a lot ~

Best regards

Signature · 8 lines
=
DongSoo, Nathaniel Kim
Engineer
Mobile S/W Platform Lab.
Digital Media & Communications R&D Centre
Samsung Electronics CO., LTD.
e-mail : [email protected]
          [email protected]
#2 lore raw
Quoted 19 lines

-----Original Message-----
From: [email protected] [mailto:linux-media- [email protected]] On Behalf Of Dongsoo, Nathaniel Kim
Sent: Thursday, June 11, 2009 11:15 AM
To: xie
Cc: v4l2_linux
Subject: Re: About V4l2 overlay sequence

It seems to be totally described in v4l2 api specification document.

The document is saying like this:
VIDIOC_QUERYCAP
video input and video standard ioctls
VIDIOC_G_FBUF and VIDIOC_S_FBUF
VIDIOC_G_FMT/S_FMT/TRY_FMT
VIDIOC_OVERLAY

Quoted 18 lines

Take a look at the document for detailed usage.
Cheers,

Nate

Quoted 12 lines · xie

Dear all ~~

With your help I have implemented the preview with capture interface ~~ Now i want to implement the preview with ovelay , and my camera support s ovelay ~
Who can tell me where I can find the document about ovelay sequcence ~ ? Or does there have a standard example source code ~ ?

Thanks a lot ~

Best regards

[Shah, Hardik] You can also look at the OMAP display driver which is using this feature.
http://arago-project.org/git/people/vaibhav/ti-psp-omap-video.git?p=people/vaibhav/ti-psp-omap-video.git;a=blob;f=drivers/media/video/omap/omap_vout.c;h=fc8ccd9f9e30e070e32fd37b5a4e7fd07e19d2e3;hb=refs/heads/ti_display

All the ioctls listed by Nate above are supported by this driver.

Regards,
Hardik Shah

Quoted 17 lines
Quoted 1 line

--
=
DongSoo, Nathaniel Kim
Engineer
Mobile S/W Platform Lab.
Digital Media & Communications R&D Centre
Samsung Electronics CO., LTD.
e-mail : [email protected]
[email protected]
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