view docs/html/sdlcreateyuvoverlay.html @ 950:b7a5c1b64829

Date: Tue, 24 Aug 2004 06:16:32 +0200 From: Christian Biere Subject: [SDL] YUV Overlay vs. XV_AUTOPAINT_COLORKEY I have a problem with SDL's YUV Overlay support using X11 Xv. Some people reported that they get nothing but a black screen. I've compared the output of xvattr they've sent me with the values I get here. It turned out that XV_AUTOPAINT_COLORKEY was disabled. By enabling this feature everything works fine.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 25 Aug 2004 05:39:03 +0000
parents 355632dca928
children
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>SDL_CreateYUVOverlay</H1
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><H2
>Name</H2
>SDL_CreateYUVOverlay&nbsp;--&nbsp;Create a YUV video overlay</DIV
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CLASS="REFSYNOPSISDIV"
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>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_Overlay *<B
CLASS="FSFUNC"
>SDL_CreateYUVOverlay</B
></CODE
>(int width, int height, Uint32 format, SDL_Surface *display);</CODE
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><H2
>Description</H2
><P
><TT
CLASS="FUNCTION"
>SDL_CreateYUVOverlay</TT
> creates a YUV overlay of the specified <TT
CLASS="PARAMETER"
><I
>width</I
></TT
>, <TT
CLASS="PARAMETER"
><I
>height</I
></TT
> and <TT
CLASS="PARAMETER"
><I
>format</I
></TT
> (see <A
HREF="sdloverlay.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Overlay</SPAN
></A
> for a list of available formats), for the provided <TT
CLASS="PARAMETER"
><I
>display</I
></TT
>. A <A
HREF="sdloverlay.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Overlay</SPAN
></A
> structure is returned.</P
><P
>The term 'overlay' is a misnomer since, unless the overlay is created in hardware, the contents for the display surface underneath the area where the overlay is shown will be overwritten when the overlay is displayed.</P
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>See Also</H2
><P
><A
HREF="sdloverlay.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Overlay</SPAN
></A
>,
<A
HREF="sdldisplayyuvoverlay.html"
><TT
CLASS="FUNCTION"
>SDL_DisplayYUVOverlay</TT
></A
>,
<A
HREF="sdlfreeyuvoverlay.html"
><TT
CLASS="FUNCTION"
>SDL_FreeYUVOverlay</TT
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