🚀 go-pugleaf

Hi Mike,

"Mike Browne" <mfbrowne@netcom.ca> wrote in message
news:3cc8807a$1_1@dnews...
> Can anyone point me to some  sample code that would show me how to capture
a
> frame from a video camera in jpg format. I have been using the
> capFileSaveDIB but I would like to save in a jpg format instead of a BMP
> format.
>
> Thanks for any help

Sorry, no sample code.  But...

You can get the video driver to send frames to a callback function using
capSetCallbackOnFrame.  The callback function is defined as:

LRESULT CALLBACK capVideoStreamCallback(
  HWND hWnd,
  LPVIDEOHDR lpVHdr
);

All the data you should need on the frame is in the VIDEOHDR struct,
including whether it's a keyframe, the locked memory area it's in, how big,
etc.  From memory (it's been a while) the frame data is in whatever capture
format your camera uses, so you might have to decode that back to bitmap
before you encode to jpeg.

Let us know how you get on anyway.

--
Corey Murtagh
The Electric Monk
"Quidquid latine dictum sit, altum viditur."