Re: Getting a hook from shell mode to do motion detection?

On Mon, Jan 01, 2018 at 11:20:46AM -0500, Alan Corey wrote:
> I guess capture.c isn't exactly self-contained:
> preview.c:(.text+0x4c): undefined reference to `sample_create_context'
> preview.c:(.text+0xbc): undefined reference to `canon_enable_capture'
> preview.c:(.text+0xd0): undefined reference to `camera_eosviewfinder'
> preview.c:(.text+0x1b0): undefined reference to `camera_auto_focus'
> preview.c:(.text+0x1c4): undefined reference to `camera_auto_focus'
> preview.c:(.text+0x204): undefined reference to `camera_manual_focus'
> preview.c:(.text+0x2e4): undefined reference to `camera_eosviewfinder'
> 
> So I guess I'll have to write some placeholders at least to use it.
> The Lunkwill stuff is still online from 8 years ago but I don't see
> them there.  Or I probably should take out the missing stuff and only
> put in what I need.  I went to preview.c first because I want to see
> how feasible capturing previews and handing them off to my motion
> detection is going to be.

you also need to build and link with:

sample-photobooth.c context.c config.c
 
> It seems wasteful to go through compressing each one to a JPEG and
> uncompressing it again but I suppose the camera's firmware dictates
> that.

Likely, yes.

Ciao, Marcus

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