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later this year I'm going to have a lot of time on my hands, and I thought I'd start a "small" project for myself and release it as open source.
I'd like to code my own Fraps alternative. (or continue with Taksi http://taksi.sourceforge.net ).
Fraps is a video & sound recording programm, which captures the screen during gameplay. It has way more functions than I need and its commercial.
All I want is being able to record the screen / game I'm currently playing continuously including sound no other extras.
Now this is a new area for me, but not the programming languages. I thought I'll be using C++ (& others if needed).
What I need are hints where to look, and what to look for, where to read stuff rearding it. Etc. etc.
I hope y'all can help me!
Here is some good info on the techniques used by FRAPS.
http://www.woodmann.com/forum/archive/index.php/t-11023.htm
My company published a source code in C++ for hooking into DirectX to capture video and calculate FPS (audio is not included). It is available on github as AVRecorderTool.
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I'm refactoring some of my directx10 code to directx11 and trying to figure out DIrectWrite for my text functions. From MSDN, I hear that they're switching everything to this and that directwrite is now included with direct3d. But, eh - I can't find a tutorial that actually shows 3d Rendered text with directwrite. Anyone know an example?
Microsoft "Direct3D and Direct2D text overlay sample" should do the trick ! http://code.msdn.microsoft.com/windowsapps/Direct2D-Direct3D-Interop-ee641e46
You want to start with the code Samples that Microsoft provide:
http://archive.msdn.microsoft.com/DirectWrite
These are really good and I managed to implement DirectWrite quite easily following the samples. They are all documented pretty well. Check out the header file DWrite.h as well, this is fully documented (the same as the website).
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I'm looking for a sample code.
It's 3D modeling using camera.
like this: http://mi.eng.cam.ac.uk/~qp202/my_papers/BMVC09/
Hopefully, I want to use c or c++.
Thanks.
openCv is probably the easiest place to start.
There are a few chapters about creatign scenes from stereo pairs (which is a bit easier) in the opencv book otherwise 3d models from image understanding is still possible - but a lot harder mathematically.
You may want to check out OpenCV for computer vision functionality and OpenGL for 3D graphics. Both are widely used APIs with plenty of online documentation and examples, both official and third-party.
You could try contacting the author of the paper to see if he's willing to release his source code to you. It looks like he used CGAL (for the Delauny Tetrahedralisation) so if you go that route, you'll need to get a copy of that.
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any websites, books etc. If someone would like to share their own experiences.
thank you
This is a free book which runs through some recurring tasks in computer vision and image processing.
Regarding the C++, you can take a look at OpenCV which is a computer vision library written in c/c++
I've had a lot of success with open-cv. I've done an effect similar to Adobe's "Magic Wand" tool.
http://opencv.willowgarage.com/wiki/
http://en.wikipedia.org/wiki/OpenCV
If you are interested in writing your own library you will need a pretty serious math background. The algorithms involved can be pretty intense.
There's a good list of simple image processing operators here, but really the best is to take courses in DSP and image processing.
Did some C image processing when I was in school.
I read this ebook. It was helpful.
http://homepages.inf.ed.ac.uk/rbf/BOOKS/PHILLIPS/cips2ed.pdf
Magick++ is a good API for image processing in C++, and has a tutorial(PDF).
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I would like to mix several sound (wave) streams into one.
Each stream might have a different format (bits/sample, channel count, etc.), so conversion is needed also.
I am looking for a library to do this, which I can link into my VS C++ project, before jumping in and implementing my own.
If you just want a library you can use the SOX library. It is pretty good and easy to use.
If you want more control over how the mixing is done, and maybe have more than 2 files to mix, you should take a look at the STK library
It is very simple yet quite powerful. The following is an example of how you can use a single line of code to mix two waves (simple superpositioning of the signals)
output.tick( input1.tick()*0.5+ input2.tick()*0.5 );
Hope this helps.
FMOD is quite good.
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I was wondering if anyone knew of a simple opengl game engine for linux where the source is available to read.
I basically want to read the source to get a better idea of how things are put together without worrying about the code being cross platform or having fancy particle effects or anything.
You may be interested in Irrlicht
Have a look at DevMaster, a website with a lot of information about game programming and a 3D Engines Database.
You might want to check Ogre
SDL supports OpenGL, is open source, and you can port your game to Windows if you want. I've used it to write a Tetris program. It supports C and C++.
A simple engine for beginners, written in C++, contains samples to start with and sample game project to study:
D'Enfent Engine