On 11/16/05, Smoof . <[EMAIL PROTECTED]> wrote: > Hello, > > I am writing an application that will display up to 9 independent video > streams (each stream is 320 x 240). I'm new to Xv and may not be using the > correct terminology so please bear with me. I have tried two approaches: > > The first approach was to create one large overlay using XvShmCreateImage > and tile in the video frames. Once all frames are tiled in, use > XvShmPutImage to send them to the X server. This method works perfectly. > However, my ultimate goal is to send each video stream to it's own GTK > widget so I can have each video stream playing in a window that can be > moved, be surrounded by buttons, minimized, etc... > > I implemented this by creating a simple GTK app with three drawing areas > (ultimately I will have 9) of 320x240 and used some GDK functions to > determine the X window id's for the widgets. I created a separate overlay > (again using XvShmCreateImage) for each window. Then I call XvShmPutImage > once for each window. Finally I call XFlush so send the requests to the X > server. I tried using XSync but it seemed to interfere with the GTK event > loop. > > The problem with this second approach is that the overlays are flashing blue > (the overlay color key from what I've read). So I looking for advice on how > to update multiple overlays at a rate of 24fps without any flashing. Or if > you don't think this is possible then please let me know and I'll just have > to get by with my first implementation. >
Most hardware only has one overlay so each widget will be fighting for it. only the one that has it at any given moment will actually display the video; the rest will show the colorkey. Alex > Thanks for your help > _______________________________________________ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
