1 <HTML 2 ><HEAD 3 ><TITLE 4 >SDL_LockYUVOverlay</TITLE 5 ><META 6 NAME="GENERATOR" 7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ 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_CreateYUVOverlay" 17 HREF="sdlcreateyuvoverlay.html"><LINK 18 REL="NEXT" 19 TITLE="SDL_UnlockYUVOverlay" 20 HREF="sdlunlockyuvoverlay.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 31 SUMMARY="Header navigation table" 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="sdlcreateyuvoverlay.html" 49 ACCESSKEY="P" 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="sdlunlockyuvoverlay.html" 63 ACCESSKEY="N" 64 >Next</A 65 ></TD 66 ></TR 67 ></TABLE 68 ><HR 69 ALIGN="LEFT" 70 WIDTH="100%"></DIV 71 ><H1 72 ><A 73 NAME="SDLLOCKYUVOVERLAY" 74 ></A 75 >SDL_LockYUVOverlay</H1 76 ><DIV 77 CLASS="REFNAMEDIV" 78 ><A 79 NAME="AEN2844" 80 ></A 81 ><H2 82 >Name</H2 83 >SDL_LockYUVOverlay -- Lock an overlay</DIV 84 ><DIV 85 CLASS="REFSYNOPSISDIV" 86 ><A 87 NAME="AEN2847" 88 ></A 89 ><H2 90 >Synopsis</H2 91 ><DIV 92 CLASS="FUNCSYNOPSIS" 93 ><A 94 NAME="AEN2848" 95 ></A 96 ><P 97 ></P 98 ><PRE 99 CLASS="FUNCSYNOPSISINFO" 100 >#include "SDL.h"</PRE 101 ><P 102 ><CODE 103 ><CODE 104 CLASS="FUNCDEF" 105 >int <B 106 CLASS="FSFUNC" 107 >SDL_LockYUVOverlay</B 108 ></CODE 109 >(SDL_Overlay *overlay);</CODE 110 ></P 111 ><P 112 ></P 113 ></DIV 114 ></DIV 115 ><DIV 116 CLASS="REFSECT1" 117 ><A 118 NAME="AEN2854" 119 ></A 120 ><H2 121 >Description</H2 122 ><P 123 >Much the same as <A 124 HREF="sdllocksurface.html" 125 ><TT 126 CLASS="FUNCTION" 127 >SDL_LockSurface</TT 128 ></A 129 >, <TT 130 CLASS="FUNCTION" 131 >SDL_LockYUVOverlay</TT 132 > locks the <A 133 HREF="sdloverlay.html" 134 ><TT 135 CLASS="PARAMETER" 136 ><I 137 >overlay</I 138 ></TT 139 ></A 140 > for direct access to pixel data.</P 141 ></DIV 142 ><DIV 143 CLASS="REFSECT1" 144 ><A 145 NAME="AEN2862" 146 ></A 147 ><H2 148 >Return Value</H2 149 ><P 150 >Returns <SPAN 151 CLASS="RETURNVALUE" 152 >0</SPAN 153 > on success, or <SPAN 154 CLASS="RETURNVALUE" 155 >-1</SPAN 156 > on an error.</P 157 ></DIV 158 ><DIV 159 CLASS="REFSECT1" 160 ><A 161 NAME="AEN2867" 162 ></A 163 ><H2 164 >See Also</H2 165 ><P 166 ><A 167 HREF="sdlunlockyuvoverlay.html" 168 ><TT 169 CLASS="FUNCTION" 170 >SDL_UnlockYUVOverlay</TT 171 ></A 172 >, 173 <A 174 HREF="sdlcreateyuvoverlay.html" 175 ><TT 176 CLASS="FUNCTION" 177 >SDL_CreateYUVOverlay</TT 178 ></A 179 >, 180 <A 181 HREF="sdloverlay.html" 182 ><SPAN 183 CLASS="STRUCTNAME" 184 >SDL_Overlay</SPAN 185 ></A 186 ></P 187 ></DIV 188 ><DIV 189 CLASS="NAVFOOTER" 190 ><HR 191 ALIGN="LEFT" 192 WIDTH="100%"><TABLE 193 SUMMARY="Footer navigation table" 194 WIDTH="100%" 195 BORDER="0" 196 CELLPADDING="0" 197 CELLSPACING="0" 198 ><TR 199 ><TD 200 WIDTH="33%" 201 ALIGN="left" 202 VALIGN="top" 203 ><A 204 HREF="sdlcreateyuvoverlay.html" 205 ACCESSKEY="P" 206 >Prev</A 207 ></TD 208 ><TD 209 WIDTH="34%" 210 ALIGN="center" 211 VALIGN="top" 212 ><A 213 HREF="index.html" 214 ACCESSKEY="H" 215 >Home</A 216 ></TD 217 ><TD 218 WIDTH="33%" 219 ALIGN="right" 220 VALIGN="top" 221 ><A 222 HREF="sdlunlockyuvoverlay.html" 223 ACCESSKEY="N" 224 >Next</A 225 ></TD 226 ></TR 227 ><TR 228 ><TD 229 WIDTH="33%" 230 ALIGN="left" 231 VALIGN="top" 232 >SDL_CreateYUVOverlay</TD 233 ><TD 234 WIDTH="34%" 235 ALIGN="center" 236 VALIGN="top" 237 ><A 238 HREF="video.html" 239 ACCESSKEY="U" 240 >Up</A 241 ></TD 242 ><TD 243 WIDTH="33%" 244 ALIGN="right" 245 VALIGN="top" 246 >SDL_UnlockYUVOverlay</TD 247 ></TR 248 ></TABLE 249 ></DIV 250 ></BODY 251 ></HTML 252 >
