[sugar] [Activities] Camera raw mode (WAS: Panorama activity)
christoph.derndorfer at gmail.com
Sat Sep 6 10:15:35 EDT 2008
IIRC the camera also supports a RAW mode, right?
Is this another feature that we could integrate into an advanced camera
activity that also includes the features mentioned below?
On Fri, Sep 5, 2008 at 4:26 PM, Nirav Patel <olpc at spongezone.net> wrote:
> I don't know about integrating it into Record, but the other issues
> are fairly easy to resolve. I wrote a Python module over the summer
> to interface v4l2 cameras that returns Pygame surfaces. Capturing
> images is near instant (~20ms for 640x480 RGB). Autogain and
> autowhitebalance can be disabled using v4l2 camera controls. There is
> support in my module for the hflip and vflip controls, but adding
> additional controls is trivial.
> Alternately, we could just use a little utility in C to access any
> v4l2 camera control. Since the module I wrote is for Pygame and is
> eventually going to be cross platform, adding v4l2 specific stuff to
> it is probably not the greatest idea.
> It may just be better to skip sticking it in Record and make a
> standalone activity, since Record seems to have plenty of issues on
> its own without a big new feature. There wouldn't be much code
> duplication if Panorama doesn't use gstreamer anyway.
> On Fri, Sep 5, 2008 at 9:26 AM, Benjamin M. Schwartz
> <bmschwar at fas.harvard.edu> wrote:
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> > Christoph Derndorfer wrote:
> > | Sweet, I totally missed that!
> > |
> > | Is anyone actively working on integrating that functionality into
> > | or making it available as a seperate activity?
> > |
> > | Christoph
> > |
> > See http://lists.laptop.org/pipermail/sugar/2008-February/004307.html
> > The Panorama Activity is snot quite barely functional. It might be best
> > to roll this functionality into Record, and Erik Blankinship has
> > some interest in that. However, Record's UI is very unusual, and I am
> > about to attempt integration with it myself. Also, as you can see in the
> > examples, this process is only likely to work well once the camera's
> > automatic white balance and gain control are deactivated. The only way I
> > know how to do that is to run in Bayer mode. Bayer mode was introduced
> > a recent gstreamer, but gstreamer was recently downgraded, which leaves
> > without a known reliable way to access Bayer mode.
> > - --Ben
> > P.S. For Bayer mode info, see
> > http://lists.laptop.org/pipermail/devel/2008-February/011029.html
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e-mail: christoph at olpcnews.com
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