Video for windows capture in the background? - CSharp

On 22 Aug., 09:34, slack.vic... wrote:
> Hi guys, what i'm trying to do is do frame processing with the
> possibility of the app to not be in focus.What happens if the capture
> window gets hidden is that no more frames are sent to the
> callback...I've tried fyield to no avail.I'd greatly appreciate it if
> someone could put me on the right path with this one.
>
> vic.

Simply stop capturing the window if it has the state of beeing
minimized.

I am not sure i you are using .NET so can't give you an example =)

On Aug 22, 12:42 pm, maxpa1n <Max.Hoel...@gmx.de> wrote:
> On 22 Aug., 09:34, slack.vic... wrote:
>
> > Hi guys, what i'm trying to do is do frame processing with the
> > possibility of the app to not be in focus.What happens if the capture
> > window gets hidden is that no more frames are sent to the
> > callback...I've tried fyield to no avail.I'd greatly appreciate it if
> > someone could put me on the right path with this one.
>
> > vic.
>
> Simply stop capturing the window if it has the state of beeing
> minimized.
>
> I am not sure i you are using .NET so can't give you an example =)


Well, no, i've made a C# wrapper around the avicap32.dll...anyway, the
solution to keep frame processing going in the background or when the
capture window is hidden is to make a timer to the desired framerate
and manually grab frames with the WM_CAP_GRAB_FRAME message, save them
in the clipboard with WM_CAP_EDIT_COPY and grab them back into a
bitmap with
(Bitmap)Clipboard.GetDataObject().GetData(DataFormats.Bitmap);

thanks anyways,
vic.