[RFC] API for controlling Scenemode Preset

[RFC] API for controlling Scenemode Preset

[Kim, HeungJun]

Hello everyone,

This is a suggestion about the preset for the scenemode of camera. It's just
one API, and its role determines which current scenemode preset of camera is.

The kinds of scenemode are various at each camera. But, as you look around 
camera, the each scenemode has common name and the specific scenemode just
exist or not. So, I started to collect the scenemode common set of Fujitsu
M-5MOLS and NEC CE147. And, I found these modes are perfetly matched, althogh
the names are a little different.

I introduce these scenemode preset.

	Fujitsu M5MO		NEC CE147

	Portrait		Portrait
	Landscape		Landscape
	Sports			Sports
	Party & Indoor		Indoor & Party
	Beach & Snow		Beach & Snow
	Sunset			Sunset
	Dawn & Dusk		Dawn
	Fall			FallColor
	Night			Night
	Against Light		Against
	Fire			Fireworks
	Text			Text
	Candle			Candlelight

The camera just one scememode at one time, so these can be express by menu type
like this.

CID name
	: V4L2_CID_SCENEMODE

CID enumeration
	: enum v4l2_scenemode {
		V4L2_SCENEMODE_PORTRAIT	=	0,
		V4L2_SCENEMODE_LANDSCAPE	=	1,
		V4L2_SCENEMODE_SPORTS	=	2,
		V4L2_SCENEMODE_PARTY_INDOOR	=	3,
		V4L2_SCENEMODE_BEACH_SNOW	=	4,
		V4L2_SCENEMODE_SUNSET	=	5,
		V4L2_SCENEMODE_DAWN_DUSK	=	6,
		V4L2_SCENEMODE_FALLCOLOR	=	7,
		V4L2_SCENEMODE_NIGHT	=	8,
		V4L2_SCENEMODE_AGAINST_LIGHT	=	9,
		V4L2_SCENEMODE_FIREWORKS	=	10,
		V4L2_SCENEMODE_TEXT	=	11,
		V4L2_SCENEMODE_CANDLELIGHT	=	12,
	};

Thanks for reading, and welcome always any comments & opinions & any other cases.
I want to know any other case very much. :)

Ragards,
Heungjun Kim

Re: [RFC] API for controlling Scenemode Preset

[Laurent Pinchart]

Hi HeungJun,

On Thursday 31 March 2011 07:39:09 Kim, HeungJun wrote:
> Hello everyone,
> 
> This is a suggestion about the preset for the scenemode of camera. It's
> just one API, and its role determines which current scenemode preset of
> camera is.
> 
> The kinds of scenemode are various at each camera. But, as you look around
> camera, the each scenemode has common name and the specific scenemode just
> exist or not. So, I started to collect the scenemode common set of Fujitsu
> M-5MOLS and NEC CE147. And, I found these modes are perfetly matched,
> althogh the names are a little different.

[snip]

Are those presets really implemented in hardware ? I expect that they control 
various configuration parameters such as white balance. Can all those 
parameters also be controlled manually, or are they (or some of them) settable 
only through the scene mode presets ?

-- 
Regards,

Laurent Pinchart

Re: [RFC] API for controlling Scenemode Preset

[Kim HeungJun]

Hi Laurent,

2011. 3. 31., 오후 11:12, Laurent Pinchart 작성:

> Hi HeungJun,
> 
> On Thursday 31 March 2011 07:39:09 Kim, HeungJun wrote:
>> Hello everyone,
>> 
>> This is a suggestion about the preset for the scenemode of camera. It's
>> just one API, and its role determines which current scenemode preset of
>> camera is.
>> 
>> The kinds of scenemode are various at each camera. But, as you look around
>> camera, the each scenemode has common name and the specific scenemode just
>> exist or not. So, I started to collect the scenemode common set of Fujitsu
>> M-5MOLS and NEC CE147. And, I found these modes are perfetly matched,
>> althogh the names are a little different.
> 
> [snip]
> 
> Are those presets really implemented in hardware ? I expect that they control 
> various configuration parameters such as white balance. Can all those 
> parameters also be controlled manually, or are they (or some of them) settable 
> only through the scene mode presets ?
Yeah. These modes can be easily activated only one I2C register access. So, maybe
this is the reason why this is called 'preset'. Although it needs previous works, the all
recommended flow table(or order? I can't express well) of I2C  command(like
relative white balance, exposure, iso, etc) are ready in document.

Probably, it can be concerned about control clustered with the other controls.
Because, the scene mode itself means 'preset' which is accompanied by various
control. But, I think doing that is the role of driver's side, and the truth to be needed 
scene mode API is irrelevant.

Thanks for comments.

Regards,
Heungjun Kim

> 
> -- 
> Regards,
> 
> Laurent Pinchart
> --
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