.TH "SDL_Overlay" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME"SDL_Overlay\- YUV video overlay.SH "STRUCTURE DEFINITION".PP.nf\f(CWtypedef struct{  Uint32 format;  int w, h;  int planes;  Uint16 *pitches;  Uint8 **pixels;  Uint32 hw_overlay:1;} SDL_Overlay;\fR.fi.PP.SH "STRUCTURE DATA".TP 20\fBformat\fROverlay format (see below).TP 20\fBw, h\fRWidth and height of overlay.TP 20\fBplanes\fRNumber of planes in the overlay\&. Usually either 1 or 3.TP 20\fBpitches\fRAn array of pitches, one for each plane\&. Pitch is the length of a row in bytes\&..TP 20\fBpixels\fRAn array of pointers to teh data of each plane\&. The overlay should be locked before these pointers are used\&..TP 20\fBhw_overlay\fRThis will be set to 1 if the overlay is hardware accelerated\&..SH "DESCRIPTION".PPA \fBSDL_Overlay\fR is similar to a \fI\fBSDL_Surface\fR\fR except it stores a YUV overlay\&. All the fields are read only, except for \fBpixels\fR which should be \fIlocked\fR before use\&. The \fBformat\fR field stores the format of the overlay which is one of the following: .PP.nf\f(CW#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 */\fR.fi.PP More information on YUV formats can be found at \fIhttp://www\&.webartz\&.com/fourcc/indexyuv\&.htm (link to URL http://www.webartz.com/fourcc/indexyuv.htm) \fR\&..SH "SEE ALSO".PP\fI\fBSDL_CreateYUVOverlay\fP\fR, \fI\fBSDL_LockYUVOverlay\fP\fR, \fI\fBSDL_UnlockYUVOverlay\fP\fR, \fI\fBSDL_FreeYUVOverlay\fP\fR...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01