annotate docs/html/sdloverlay.html @ 701:aaf3b8af6616

Date: Sat, 30 Aug 2003 16:28:10 +0300 From: "Mike Gorchak" Subject: Re: SDL 1.2.6 - minor changes about shared library building under QNX6 into README.QNX - added forgotten libSDLmain.a into distribution, SDL.qpg.in - added header guards to the all headers. - fixed fullscreen double buffered mode. - fixed Photon crashes after/during using fullscreen OpenGL modes. - added GL_MakeCurrent function. - added SDL_VIDEOEXPOSE event, when OpenGL window have been resized - added more HAVE_OPENGL checks to avoid dead code compilation without using OpenGL - finished code reorganization (began into previous patches).
author Sam Lantinga <slouken@libsdl.org>
date Sat, 30 Aug 2003 17:07:59 +0000
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children 355632dca928
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1 <HTML
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3 ><TITLE
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4 >SDL_Overlay</TITLE
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5 ><META
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6 NAME="GENERATOR"
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64
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8 "><LINK
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9 REL="HOME"
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10 TITLE="SDL Library Documentation"
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11 HREF="index.html"><LINK
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13 TITLE="Video"
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16 TITLE="SDL_VideoInfo"
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17 HREF="sdlvideoinfo.html"><LINK
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20 HREF="wm.html"></HEAD
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27 ALINK="#ff0000"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 WIDTH="100%"
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32 BORDER="0"
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33 CELLPADDING="0"
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34 CELLSPACING="0"
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35 ><TR
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36 ><TH
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37 COLSPAN="3"
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38 ALIGN="center"
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39 >SDL Library Documentation</TH
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40 ></TR
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41 ><TR
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42 ><TD
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45 VALIGN="bottom"
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46 ><A
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47 HREF="sdlvideoinfo.html"
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48 >Prev</A
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49 ></TD
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50 ><TD
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51 WIDTH="80%"
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52 ALIGN="center"
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53 VALIGN="bottom"
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54 ></TD
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55 ><TD
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56 WIDTH="10%"
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58 VALIGN="bottom"
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59 ><A
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60 HREF="wm.html"
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61 >Next</A
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62 ></TD
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63 ></TR
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64 ></TABLE
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65 ><HR
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67 WIDTH="100%"></DIV
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68 ><H1
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69 ><A
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70 NAME="SDLOVERLAY"
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71 >SDL_Overlay</A
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72 ></H1
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73 ><DIV
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74 CLASS="REFNAMEDIV"
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75 ><A
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76 NAME="AEN3080"
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77 ></A
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78 ><H2
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79 >Name</H2
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80 >SDL_Overlay&nbsp;--&nbsp;YUV video overlay</DIV
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81 ><DIV
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82 CLASS="REFSECT1"
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83 ><A
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84 NAME="AEN3083"
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85 ></A
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86 ><H2
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87 >Structure Definition</H2
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88 ><PRE
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89 CLASS="PROGRAMLISTING"
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90 >typedef struct{
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91 Uint32 format;
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92 int w, h;
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93 int planes;
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94 Uint16 *pitches;
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95 Uint8 **pixels;
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96 Uint32 hw_overlay:1;
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97 } SDL_Overlay;</PRE
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98 ></DIV
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99 ><DIV
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100 CLASS="REFSECT1"
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101 ><A
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102 NAME="AEN3086"
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103 ></A
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104 ><H2
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105 >Structure Data</H2
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106 ><DIV
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107 CLASS="INFORMALTABLE"
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108 ><A
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109 NAME="AEN3088"
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110 ></A
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111 ><P
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112 ></P
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113 ><TABLE
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114 BORDER="0"
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115 CLASS="CALSTABLE"
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116 ><TBODY
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117 ><TR
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118 ><TD
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119 ALIGN="LEFT"
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120 VALIGN="TOP"
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121 ><TT
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122 CLASS="STRUCTFIELD"
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123 ><I
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124 >format</I
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125 ></TT
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126 ></TD
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127 ><TD
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128 ALIGN="LEFT"
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129 VALIGN="TOP"
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130 >Overlay format (see below)</TD
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131 ></TR
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132 ><TR
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133 ><TD
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134 ALIGN="LEFT"
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135 VALIGN="TOP"
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136 ><TT
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137 CLASS="STRUCTFIELD"
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138 ><I
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139 >w, h</I
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140 ></TT
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141 ></TD
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142 ><TD
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143 ALIGN="LEFT"
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144 VALIGN="TOP"
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145 >Width and height of overlay</TD
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146 ></TR
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147 ><TR
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148 ><TD
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149 ALIGN="LEFT"
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150 VALIGN="TOP"
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151 ><TT
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152 CLASS="STRUCTFIELD"
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153 ><I
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154 >planes</I
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155 ></TT
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156 ></TD
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157 ><TD
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158 ALIGN="LEFT"
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159 VALIGN="TOP"
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160 >Number of planes in the overlay. Usually either 1 or 3</TD
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161 ></TR
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162 ><TR
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163 ><TD
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164 ALIGN="LEFT"
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165 VALIGN="TOP"
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166 ><TT
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167 CLASS="STRUCTFIELD"
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168 ><I
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169 >pitches</I
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170 ></TT
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171 ></TD
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172 ><TD
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173 ALIGN="LEFT"
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174 VALIGN="TOP"
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175 >An array of pitches, one for each plane. Pitch is the length of a row in bytes.</TD
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176 ></TR
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177 ><TR
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178 ><TD
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179 ALIGN="LEFT"
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180 VALIGN="TOP"
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181 ><TT
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182 CLASS="STRUCTFIELD"
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183 ><I
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184 >pixels</I
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185 ></TT
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186 ></TD
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187 ><TD
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188 ALIGN="LEFT"
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189 VALIGN="TOP"
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190 >An array of pointers to teh data of each plane. The overlay should be locked before these pointers are used.</TD
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191 ></TR
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192 ><TR
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193 ><TD
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194 ALIGN="LEFT"
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195 VALIGN="TOP"
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196 ><TT
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197 CLASS="STRUCTFIELD"
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198 ><I
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199 >hw_overlay</I
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200 ></TT
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201 ></TD
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202 ><TD
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203 ALIGN="LEFT"
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204 VALIGN="TOP"
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205 >This will be set to 1 if the overlay is hardware accelerated.</TD
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206 ></TR
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207 ></TBODY
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208 ></TABLE
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209 ><P
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210 ></P
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211 ></DIV
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212 ></DIV
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213 ><DIV
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214 CLASS="REFSECT1"
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215 ><A
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216 NAME="AEN3115"
0
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217 ></A
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218 ><H2
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219 >Description</H2
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220 ><P
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221 >A <SPAN
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222 CLASS="STRUCTNAME"
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223 >SDL_Overlay</SPAN
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224 > is similar to a <A
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225 HREF="sdlsurface.html"
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226 ><SPAN
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227 CLASS="STRUCTNAME"
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228 >SDL_Surface</SPAN
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229 ></A
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230 > except it stores a YUV overlay. All the fields are read only, except for <TT
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231 CLASS="STRUCTFIELD"
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232 ><I
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233 >pixels</I
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234 ></TT
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235 > which should be <A
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236 HREF="sdllockyuvoverlay.html"
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237 >locked</A
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238 > before use. The <TT
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239 CLASS="STRUCTFIELD"
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240 ><I
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241 >format</I
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242 ></TT
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243 > field stores the format of the overlay which is one of the following:
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244 <PRE
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245 CLASS="PROGRAMLISTING"
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246 >#define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U */
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247 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V */
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248 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 */
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249 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 */
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250 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 */</PRE
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251 >
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252 More information on YUV formats can be found at <A
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253 HREF="http://www.webartz.com/fourcc/indexyuv.htm"
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254 TARGET="_top"
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255 >http://www.webartz.com/fourcc/indexyuv.htm</A
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256 >.</P
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257 ></DIV
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258 ><DIV
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259 CLASS="REFSECT1"
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260 ><A
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261 NAME="AEN3126"
0
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262 ></A
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263 ><H2
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264 >See Also</H2
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265 ><P
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266 ><A
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267 HREF="sdlcreateyuvoverlay.html"
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268 ><TT
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269 CLASS="FUNCTION"
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270 >SDL_CreateYUVOverlay</TT
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271 ></A
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272 >,
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273 <A
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274 HREF="sdllockyuvoverlay.html"
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275 ><TT
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276 CLASS="FUNCTION"
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277 >SDL_LockYUVOverlay</TT
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278 ></A
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279 >,
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280 <A
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281 HREF="sdlunlockyuvoverlay.html"
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282 ><TT
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283 CLASS="FUNCTION"
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284 >SDL_UnlockYUVOverlay</TT
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285 ></A
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286 >,
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287 <A
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288 HREF="sdlfreeyuvoverlay.html"
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289 ><TT
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290 CLASS="FUNCTION"
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291 >SDL_FreeYUVOverlay</TT
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292 ></A
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293 ></P
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294 ></DIV
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295 ><DIV
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296 CLASS="NAVFOOTER"
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297 ><HR
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298 ALIGN="LEFT"
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299 WIDTH="100%"><TABLE
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300 WIDTH="100%"
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301 BORDER="0"
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302 CELLPADDING="0"
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303 CELLSPACING="0"
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304 ><TR
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305 ><TD
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306 WIDTH="33%"
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307 ALIGN="left"
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308 VALIGN="top"
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309 ><A
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310 HREF="sdlvideoinfo.html"
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311 >Prev</A
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312 ></TD
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313 ><TD
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314 WIDTH="34%"
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315 ALIGN="center"
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316 VALIGN="top"
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317 ><A
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318 HREF="index.html"
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319 >Home</A
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320 ></TD
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321 ><TD
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322 WIDTH="33%"
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323 ALIGN="right"
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324 VALIGN="top"
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325 ><A
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326 HREF="wm.html"
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327 >Next</A
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328 ></TD
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329 ></TR
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330 ><TR
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331 ><TD
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332 WIDTH="33%"
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333 ALIGN="left"
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334 VALIGN="top"
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335 >SDL_VideoInfo</TD
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336 ><TD
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337 WIDTH="34%"
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338 ALIGN="center"
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339 VALIGN="top"
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340 ><A
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341 HREF="video.html"
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342 >Up</A
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343 ></TD
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344 ><TD
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345 WIDTH="33%"
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346 ALIGN="right"
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347 VALIGN="top"
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348 >Window Management</TD
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349 ></TR
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350 ></TABLE
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351 ></DIV
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352 ></BODY
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74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 >