On Monday, 21 March 2016 at 15:45:36 UTC, wobbles wrote:
Hi Folks,
I have a project in mind that I'd like to run on my new
Raspberry Pi 3.
Essentially a security camera that will only record when it
detects changes between frames.
Now, this is already a solved problem I believe, however in the
interest of learning I want to do it myself.
Ideally, I'd compare two images using the OpenCV library, and
ideally I'd do that from D code.
However, there exists no OpenCV binding for D that I can find.
Is there a technical reason for this?
I understand the OpenCV C api is quite old and dated, and it's
recommended to use the C++ one as a result.
On that, where is C++ / D linkage at?
I know very little about linking the two, but it's something
I'd like to learn more about and see this as an opportunity for
that - before I sink a load of time into it, however, it'd be
good to know if it's even feasibly possible to do so.
Thanks!
It's quite easy to write bindings for libraries that have a C
interface (ie most), if only a bit boring.
- First check in code.dlang.org or
https://github.com/D-Programming-Deimos it doesn't not already
exist.
- Choose to create a static or dynamic bindings. For
multiplatform a dynamic loader will be easier dependency-wise,
for *nix systems static linking may be easier.
- When porting C headers, there is a few gotchas:
https://p0nce.github.io/d-idioms/#Porting-from-C-gotchas
- Take inspiraton at either Deimos or Derelict to create either.
