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-   -   n900 Camera red light - ways to disable? (https://talk.maemo.org/showthread.php?t=40271)

Clayton 2010-01-13 00:27

n900 Camera red light - ways to disable?
 
Whenever a photo is taken the lights/flash will blink red and whenever taking video the lights/flash will stay red during filming. The light does not seem to have any point whatsoever other than informing others of my photo/video recording.

Is there a way to disable this red light?

svanheulen 2010-01-13 07:02

Re: n900 Camera red light - ways to disable?
 
Nevermind. Thought I knew where to fix that but nope.

R-R 2010-01-13 07:24

Re: n900 Camera red light - ways to disable?
 
Code:

PatternWebcamActive=20;1;0;r;9d80400004ffc0000000;9d800000
I'm guessing this would have been the line... if i understand this:
Priority: 20
# ScreenOn - 0 only show pattern when the display is off
# 1 show pattern even when the display is on

Changing from 1 to 0 didn't do anything after a reboot, still getting the red light, is this actually in the camera driver?

That line must be for the eventual use of the front camera....

qwerty12 2010-01-13 10:56

Re: n900 Camera red light - ways to disable?
 
It's enabled via an ioctl (done by the camera app itself, I believe) on the camera's devfs entry, not by MCE.

V4L2_CID_INDICATOR_INTENSITY... that's the one - search http://repository.maemo.org/pool/fre....6+0m5.diff.gz for it.

Strutten 2010-01-13 12:29

Re: n900 Camera red light - ways to disable?
 
On standard cameras, the red light is used for autofocus.

feydrutha 2010-01-13 13:30

Re: n900 Camera red light - ways to disable?
 
Quote:

Originally Posted by Strutten (Post 468220)
On standard cameras, the red light is used for autofocus.

Exactly... if you try to take a picture somewhere that is not illuminated enough for the autofocus to work, cameras turn on a little light. Without it autofocus will not work.

Dr. Drips 2010-01-13 13:52

Re: n900 Camera red light - ways to disable?
 
but the focus of the camcorder is fixed right?

ewan 2010-01-13 14:00

Re: n900 Camera red light - ways to disable?
 
Fixed for the duration of a recording; it auto focuses once at the start, then stays there. It should be possible in principle to use the light only during that stage, and then turn it off.

Dr. Drips 2010-01-13 14:15

Re: n900 Camera red light - ways to disable?
 
I tried it, but it seems to make less sense now:
the focus is, indeed, been done while pressing the button half way.
but it doesn't use the red light. if you focus in the dark it uses the white leds.

the red light seems to be an indicator for the people that you record only
Like Clayton suspected.

cashclientel 2010-01-13 14:22

Re: n900 Camera red light - ways to disable?
 
Guys, the red light on the N900 is not used for auto focussing like other cameras use it. It's used as a protection device to let people know when they're being filmed and to let you know the countdown of the auto timer. It has been a standard feature on all Nokias for a few years now. I think it's driven by laws in Asia and Australia about the usage of concealed cameras.


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