1 .TH "SDL_Overlay" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
3 SDL_Overlay\- YUV video overlay
4 .SH "STRUCTURE DEFINITION"
20 Overlay format (see below)
23 Width and height of overlay
26 Number of planes in the overlay\&. Usually either 1 or 3
29 An array of pitches, one for each plane\&. Pitch is the length of a row in bytes\&.
32 An array of pointers to teh data of each plane\&. The overlay should be locked before these pointers are used\&.
35 This will be set to 1 if the overlay is hardware accelerated\&.
38 A \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:
41 \f(CW#define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U */
42 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V */
43 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 */
44 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 */
45 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 */\fR
48 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\&.
51 \fI\fBSDL_CreateYUVOverlay\fP\fR, \fI\fBSDL_LockYUVOverlay\fP\fR, \fI\fBSDL_UnlockYUVOverlay\fP\fR, \fI\fBSDL_FreeYUVOverlay\fP\fR
52 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01