control (build in) webcam on desktop

[Mr_Gee]

I bought a new laptop yesterday

It has a built in webcam, so I was thinking of building a similar program as mentioned here
Is there a way of controling it through B4PPC?
It shows up in the hardware list as a usb2.0 webcam..

Thanks

[Erel]

You will need an external library to communicate with the webcam.

[colin9876]

That would be so cool if B4PPC could access the web cam, or the camera. I wanted to try and write a routine that detects the devices rotation from landscape to portrait - like they do on the new HTC diamond OS

AGraham - is it theoretically technically possible to write a C library to grab frames from the camera? If so how difficult?

[Mr_Gee]

Originally Posted by Erel

You will need an external library to communicate with the webcam.

What are the requirements for this lib?
There are several kinds of dll's and only one kind can be used with B4PPC..which one ?

[Erel]

See this thread for information about libraries: How to create a Basic4ppc library

[agraham]

Originally Posted by colin9876

AGraham - is it theoretically technically possible to write a C library to grab frames from the camera? If so how difficult?

Repeat after me - C# is not C - B4PPC needs .NET dlls written in a .NET language and C is not a .NET language.

But yes, I'm playing with a bit of C# code I've found that captures single images from the webcam on my EEE PC using Windows native avicap32.dll. No promises but I might be able turn it into a B4PPC library once I understand what's going on.

[dzt]

Originally Posted by agraham

Repeat after me - C# is not C - B4PPC needs .NET dlls written in a .NET language and C is not a .NET language.

[colin9876]

Sorry - c#! Thats the problem with these geniuses they get very touchy! lol!

Anyway if you can get Basic4ppc to capture a jpeg that would be amazing! I think you deserve another award for doing the wave generator, but a cam function would definately be ground breaking!

Does the device connect to the cam through a serial connection? My device has 2 cams, do they both connect in the same way?
Does cams send the picture as a stream of pixels? Im curious if the camera sends it in JPEG format to the WM OS, or does it get compressed later?

[agraham]

Check this out - Desktop Videocam image capture library

[colin9876]

Worked well on my laptop!