Mercurial > sdl-ios-xcode
annotate docs/html/sdloverlay.html @ 1510:720f8bb49d7d
Win32 fixes
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 13 Mar 2006 02:06:33 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_Overlay</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Video" | |
| 14 HREF="video.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_VideoInfo" | |
| 17 HREF="sdlvideoinfo.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="Window Management" | |
| 20 HREF="wm.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
| 0 | 32 WIDTH="100%" |
| 33 BORDER="0" | |
| 34 CELLPADDING="0" | |
| 35 CELLSPACING="0" | |
| 36 ><TR | |
| 37 ><TH | |
| 38 COLSPAN="3" | |
| 39 ALIGN="center" | |
| 40 >SDL Library Documentation</TH | |
| 41 ></TR | |
| 42 ><TR | |
| 43 ><TD | |
| 44 WIDTH="10%" | |
| 45 ALIGN="left" | |
| 46 VALIGN="bottom" | |
| 47 ><A | |
| 48 HREF="sdlvideoinfo.html" | |
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49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 ></TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="wm.html" | |
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63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><H1 | |
| 72 ><A | |
| 73 NAME="SDLOVERLAY" | |
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74 ></A |
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75 >SDL_Overlay</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN3464" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_Overlay -- YUV video overlay</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSECT1" | |
| 86 ><A | |
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87 NAME="AEN3467" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Structure Definition</H2 | |
| 91 ><PRE | |
| 92 CLASS="PROGRAMLISTING" | |
| 93 >typedef struct{ | |
| 94 Uint32 format; | |
| 95 int w, h; | |
| 96 int planes; | |
| 97 Uint16 *pitches; | |
| 98 Uint8 **pixels; | |
| 99 Uint32 hw_overlay:1; | |
| 100 } SDL_Overlay;</PRE | |
| 101 ></DIV | |
| 102 ><DIV | |
| 103 CLASS="REFSECT1" | |
| 104 ><A | |
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105 NAME="AEN3470" |
| 0 | 106 ></A |
| 107 ><H2 | |
| 108 >Structure Data</H2 | |
| 109 ><DIV | |
| 110 CLASS="INFORMALTABLE" | |
| 111 ><A | |
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112 NAME="AEN3472" |
| 0 | 113 ></A |
| 114 ><P | |
| 115 ></P | |
| 116 ><TABLE | |
| 117 BORDER="0" | |
| 118 CLASS="CALSTABLE" | |
| 119 ><TBODY | |
| 120 ><TR | |
| 121 ><TD | |
| 122 ALIGN="LEFT" | |
| 123 VALIGN="TOP" | |
| 124 ><TT | |
| 125 CLASS="STRUCTFIELD" | |
| 126 ><I | |
| 127 >format</I | |
| 128 ></TT | |
| 129 ></TD | |
| 130 ><TD | |
| 131 ALIGN="LEFT" | |
| 132 VALIGN="TOP" | |
| 133 >Overlay format (see below)</TD | |
| 134 ></TR | |
| 135 ><TR | |
| 136 ><TD | |
| 137 ALIGN="LEFT" | |
| 138 VALIGN="TOP" | |
| 139 ><TT | |
| 140 CLASS="STRUCTFIELD" | |
| 141 ><I | |
| 142 >w, h</I | |
| 143 ></TT | |
| 144 ></TD | |
| 145 ><TD | |
| 146 ALIGN="LEFT" | |
| 147 VALIGN="TOP" | |
| 148 >Width and height of overlay</TD | |
| 149 ></TR | |
| 150 ><TR | |
| 151 ><TD | |
| 152 ALIGN="LEFT" | |
| 153 VALIGN="TOP" | |
| 154 ><TT | |
| 155 CLASS="STRUCTFIELD" | |
| 156 ><I | |
| 157 >planes</I | |
| 158 ></TT | |
| 159 ></TD | |
| 160 ><TD | |
| 161 ALIGN="LEFT" | |
| 162 VALIGN="TOP" | |
| 163 >Number of planes in the overlay. Usually either 1 or 3</TD | |
| 164 ></TR | |
| 165 ><TR | |
| 166 ><TD | |
| 167 ALIGN="LEFT" | |
| 168 VALIGN="TOP" | |
| 169 ><TT | |
| 170 CLASS="STRUCTFIELD" | |
| 171 ><I | |
| 172 >pitches</I | |
| 173 ></TT | |
| 174 ></TD | |
| 175 ><TD | |
| 176 ALIGN="LEFT" | |
| 177 VALIGN="TOP" | |
| 178 >An array of pitches, one for each plane. Pitch is the length of a row in bytes.</TD | |
| 179 ></TR | |
| 180 ><TR | |
| 181 ><TD | |
| 182 ALIGN="LEFT" | |
| 183 VALIGN="TOP" | |
| 184 ><TT | |
| 185 CLASS="STRUCTFIELD" | |
| 186 ><I | |
| 187 >pixels</I | |
| 188 ></TT | |
| 189 ></TD | |
| 190 ><TD | |
| 191 ALIGN="LEFT" | |
| 192 VALIGN="TOP" | |
| 193 >An array of pointers to teh data of each plane. The overlay should be locked before these pointers are used.</TD | |
| 194 ></TR | |
| 195 ><TR | |
| 196 ><TD | |
| 197 ALIGN="LEFT" | |
| 198 VALIGN="TOP" | |
| 199 ><TT | |
| 200 CLASS="STRUCTFIELD" | |
| 201 ><I | |
| 202 >hw_overlay</I | |
| 203 ></TT | |
| 204 ></TD | |
| 205 ><TD | |
| 206 ALIGN="LEFT" | |
| 207 VALIGN="TOP" | |
| 208 >This will be set to 1 if the overlay is hardware accelerated.</TD | |
| 209 ></TR | |
| 210 ></TBODY | |
| 211 ></TABLE | |
| 212 ><P | |
| 213 ></P | |
| 214 ></DIV | |
| 215 ></DIV | |
| 216 ><DIV | |
| 217 CLASS="REFSECT1" | |
| 218 ><A | |
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parents:
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219 NAME="AEN3499" |
| 0 | 220 ></A |
| 221 ><H2 | |
| 222 >Description</H2 | |
| 223 ><P | |
| 224 >A <SPAN | |
| 225 CLASS="STRUCTNAME" | |
| 226 >SDL_Overlay</SPAN | |
| 227 > is similar to a <A | |
| 228 HREF="sdlsurface.html" | |
| 229 ><SPAN | |
| 230 CLASS="STRUCTNAME" | |
| 231 >SDL_Surface</SPAN | |
| 232 ></A | |
| 233 > except it stores a YUV overlay. All the fields are read only, except for <TT | |
| 234 CLASS="STRUCTFIELD" | |
| 235 ><I | |
| 236 >pixels</I | |
| 237 ></TT | |
| 238 > which should be <A | |
| 239 HREF="sdllockyuvoverlay.html" | |
| 240 >locked</A | |
| 241 > before use. The <TT | |
| 242 CLASS="STRUCTFIELD" | |
| 243 ><I | |
| 244 >format</I | |
| 245 ></TT | |
| 246 > field stores the format of the overlay which is one of the following: | |
| 247 <PRE | |
| 248 CLASS="PROGRAMLISTING" | |
| 249 >#define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U */ | |
| 250 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V */ | |
| 251 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 */ | |
| 252 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 */ | |
| 253 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 */</PRE | |
| 254 > | |
| 255 More information on YUV formats can be found at <A | |
| 256 HREF="http://www.webartz.com/fourcc/indexyuv.htm" | |
| 257 TARGET="_top" | |
| 258 >http://www.webartz.com/fourcc/indexyuv.htm</A | |
| 259 >.</P | |
| 260 ></DIV | |
| 261 ><DIV | |
| 262 CLASS="REFSECT1" | |
| 263 ><A | |
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264 NAME="AEN3510" |
| 0 | 265 ></A |
| 266 ><H2 | |
| 267 >See Also</H2 | |
| 268 ><P | |
| 269 ><A | |
| 270 HREF="sdlcreateyuvoverlay.html" | |
| 271 ><TT | |
| 272 CLASS="FUNCTION" | |
| 273 >SDL_CreateYUVOverlay</TT | |
| 274 ></A | |
| 275 >, | |
| 276 <A | |
| 277 HREF="sdllockyuvoverlay.html" | |
| 278 ><TT | |
| 279 CLASS="FUNCTION" | |
| 280 >SDL_LockYUVOverlay</TT | |
| 281 ></A | |
| 282 >, | |
| 283 <A | |
| 284 HREF="sdlunlockyuvoverlay.html" | |
| 285 ><TT | |
| 286 CLASS="FUNCTION" | |
| 287 >SDL_UnlockYUVOverlay</TT | |
| 288 ></A | |
| 289 >, | |
| 290 <A | |
| 291 HREF="sdlfreeyuvoverlay.html" | |
| 292 ><TT | |
| 293 CLASS="FUNCTION" | |
| 294 >SDL_FreeYUVOverlay</TT | |
| 295 ></A | |
| 296 ></P | |
| 297 ></DIV | |
| 298 ><DIV | |
| 299 CLASS="NAVFOOTER" | |
| 300 ><HR | |
| 301 ALIGN="LEFT" | |
| 302 WIDTH="100%"><TABLE | |
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303 SUMMARY="Footer navigation table" |
| 0 | 304 WIDTH="100%" |
| 305 BORDER="0" | |
| 306 CELLPADDING="0" | |
| 307 CELLSPACING="0" | |
| 308 ><TR | |
| 309 ><TD | |
| 310 WIDTH="33%" | |
| 311 ALIGN="left" | |
| 312 VALIGN="top" | |
| 313 ><A | |
| 314 HREF="sdlvideoinfo.html" | |
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parents:
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315 ACCESSKEY="P" |
| 0 | 316 >Prev</A |
| 317 ></TD | |
| 318 ><TD | |
| 319 WIDTH="34%" | |
| 320 ALIGN="center" | |
| 321 VALIGN="top" | |
| 322 ><A | |
| 323 HREF="index.html" | |
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324 ACCESSKEY="H" |
| 0 | 325 >Home</A |
| 326 ></TD | |
| 327 ><TD | |
| 328 WIDTH="33%" | |
| 329 ALIGN="right" | |
| 330 VALIGN="top" | |
| 331 ><A | |
| 332 HREF="wm.html" | |
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355632dca928
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parents:
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333 ACCESSKEY="N" |
| 0 | 334 >Next</A |
| 335 ></TD | |
| 336 ></TR | |
| 337 ><TR | |
| 338 ><TD | |
| 339 WIDTH="33%" | |
| 340 ALIGN="left" | |
| 341 VALIGN="top" | |
| 342 >SDL_VideoInfo</TD | |
| 343 ><TD | |
| 344 WIDTH="34%" | |
| 345 ALIGN="center" | |
| 346 VALIGN="top" | |
| 347 ><A | |
| 348 HREF="video.html" | |
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349 ACCESSKEY="U" |
| 0 | 350 >Up</A |
| 351 ></TD | |
| 352 ><TD | |
| 353 WIDTH="33%" | |
| 354 ALIGN="right" | |
| 355 VALIGN="top" | |
| 356 >Window Management</TD | |
| 357 ></TR | |
| 358 ></TABLE | |
| 359 ></DIV | |
| 360 ></BODY | |
| 361 ></HTML | |
| 362 > |