forked from KolibriOS/kolibrios
354 lines
4.7 KiB
HTML
354 lines
4.7 KiB
HTML
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>SDL_Overlay</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
|
|
"><LINK
|
|
REL="HOME"
|
|
TITLE="SDL Library Documentation"
|
|
HREF="index.html"><LINK
|
|
REL="UP"
|
|
TITLE="Video"
|
|
HREF="video.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="SDL_VideoInfo"
|
|
HREF="sdlvideoinfo.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Window Management"
|
|
HREF="wm.html"></HEAD
|
|
><BODY
|
|
CLASS="REFENTRY"
|
|
BGCOLOR="#FFF8DC"
|
|
TEXT="#000000"
|
|
LINK="#0000ee"
|
|
VLINK="#551a8b"
|
|
ALINK="#ff0000"
|
|
><DIV
|
|
CLASS="NAVHEADER"
|
|
><TABLE
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TH
|
|
COLSPAN="3"
|
|
ALIGN="center"
|
|
>SDL Library Documentation</TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="sdlvideoinfo.html"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
></TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="wm.html"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><H1
|
|
><A
|
|
NAME="SDLOVERLAY"
|
|
>SDL_Overlay</A
|
|
></H1
|
|
><DIV
|
|
CLASS="REFNAMEDIV"
|
|
><A
|
|
NAME="AEN3042"
|
|
></A
|
|
><H2
|
|
>Name</H2
|
|
>SDL_Overlay -- YUV video overlay</DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN3045"
|
|
></A
|
|
><H2
|
|
>Structure Definition</H2
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>typedef struct{
|
|
Uint32 format;
|
|
int w, h;
|
|
int planes;
|
|
Uint16 *pitches;
|
|
Uint8 **pixels;
|
|
Uint32 hw_overlay:1;
|
|
} SDL_Overlay;</PRE
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN3048"
|
|
></A
|
|
><H2
|
|
>Structure Data</H2
|
|
><DIV
|
|
CLASS="INFORMALTABLE"
|
|
><A
|
|
NAME="AEN3050"
|
|
></A
|
|
><P
|
|
></P
|
|
><TABLE
|
|
BORDER="0"
|
|
CLASS="CALSTABLE"
|
|
><TBODY
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>format</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>Overlay format (see below)</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>w, h</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>Width and height of overlay</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>planes</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>Number of planes in the overlay. Usually either 1 or 3</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>pitches</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>An array of pitches, one for each plane. Pitch is the length of a row in bytes.</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>pixels</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>An array of pointers to teh data of each plane. The overlay should be locked before these pointers are used.</TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
><TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>hw_overlay</I
|
|
></TT
|
|
></TD
|
|
><TD
|
|
ALIGN="LEFT"
|
|
VALIGN="TOP"
|
|
>This will be set to 1 if the overlay is hardware accelerated.</TD
|
|
></TR
|
|
></TBODY
|
|
></TABLE
|
|
><P
|
|
></P
|
|
></DIV
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN3077"
|
|
></A
|
|
><H2
|
|
>Description</H2
|
|
><P
|
|
>A <SPAN
|
|
CLASS="STRUCTNAME"
|
|
>SDL_Overlay</SPAN
|
|
> is similar to a <A
|
|
HREF="sdlsurface.html"
|
|
><SPAN
|
|
CLASS="STRUCTNAME"
|
|
>SDL_Surface</SPAN
|
|
></A
|
|
> except it stores a YUV overlay. All the fields are read only, except for <TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>pixels</I
|
|
></TT
|
|
> which should be <A
|
|
HREF="sdllockyuvoverlay.html"
|
|
>locked</A
|
|
> before use. The <TT
|
|
CLASS="STRUCTFIELD"
|
|
><I
|
|
>format</I
|
|
></TT
|
|
> field stores the format of the overlay which is one of the following:
|
|
<PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>#define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U */
|
|
#define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V */
|
|
#define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 */
|
|
#define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 */
|
|
#define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 */</PRE
|
|
>
|
|
More information on YUV formats can be found at <A
|
|
HREF="http://www.webartz.com/fourcc/indexyuv.htm"
|
|
TARGET="_top"
|
|
>http://www.webartz.com/fourcc/indexyuv.htm</A
|
|
>.</P
|
|
></DIV
|
|
><DIV
|
|
CLASS="REFSECT1"
|
|
><A
|
|
NAME="AEN3088"
|
|
></A
|
|
><H2
|
|
>See Also</H2
|
|
><P
|
|
><A
|
|
HREF="sdlcreateyuvoverlay.html"
|
|
><TT
|
|
CLASS="FUNCTION"
|
|
>SDL_CreateYUVOverlay</TT
|
|
></A
|
|
>,
|
|
<A
|
|
HREF="sdllockyuvoverlay.html"
|
|
><TT
|
|
CLASS="FUNCTION"
|
|
>SDL_LockYUVOverlay</TT
|
|
></A
|
|
>,
|
|
<A
|
|
HREF="sdlunlockyuvoverlay.html"
|
|
><TT
|
|
CLASS="FUNCTION"
|
|
>SDL_UnlockYUVOverlay</TT
|
|
></A
|
|
>,
|
|
<A
|
|
HREF="sdlfreeyuvoverlay.html"
|
|
><TT
|
|
CLASS="FUNCTION"
|
|
>SDL_FreeYUVOverlay</TT
|
|
></A
|
|
></P
|
|
></DIV
|
|
><DIV
|
|
CLASS="NAVFOOTER"
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="sdlvideoinfo.html"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="index.html"
|
|
>Home</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="wm.html"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>SDL_VideoInfo</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="video.html"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Window Management</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |