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[directfb-users] Re: new user with a few questions
On Fri, Feb 06, 2004 at 10:48:21AM -0600, Eldridge, Michael wrote: > > > > would i need DLSCL_ADMINISTRATIVE access to the layer in order to > > > > change mplayer's window? will mplayer's directfb output driver > > > > cooperate with me on this? > > > > I don't think vo_directfb supports output to a window. At least > > vo_dfbmga doesn't. Layers contain windows, not the other way around. > > it was my understanding that directfb applications can run in a window > without any special support. does vo_directfb not "support" output to a > window because it requests exclusive access to the layer or something > similar? Simple fullscreen apps that don't care about layers or windows can be forced to windowed mode with the force-windowed option. Such apps get the primary surface via CreateSurface() + DSCAPS_PRIMARY surface capability. More complex apps use the layer and window APIs and thus have more control over things but it also means that you can't simply flip a magic switch to make them windowed vs. fullscreen. > > With some hardware (cle266) you could make the overlay layer use alpha > > blending so you could display the video on the overlay and the control > > interface on the primary layer. > > i'm still fuzzy on layers. is the cle266 the only directfb driver that > has an overlay layer? Most drivers have at least one extra layer. It looks like nsc, sis315, tdfx and radeon don't have extra layer support. > is the additional layer something supported > explicitly by the driver or an abstraction of segmented video memory? It's a hardware feature that needs proper support from the driver. > is the radeon driver not capable of such an overlay layer? The driver doesn't support it. The hardware has at least one overlay so adding support would be possible. -- Ville Syrjälä email@example.com http://www.sci.fi/~syrjala/ -- Info: To unsubscribe send a mail to firstname.lastname@example.org with "unsubscribe directfb-users" as subject.