Mercurial > sdl-ios-xcode
annotate docs/html/sdlcd.html @ 2710:44e49d3fa6cf
Final merge of Google Summer of Code 2008 work...
Many-mouse and tablet support
by Szymon Wilczek, mentored by Ryan C. Gordon
Everything concerning the project is noted on the wiki:
http://wilku.ravenlord.ws/doku.php?id=start
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 25 Aug 2008 06:33:00 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_CD</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="CD-ROM" | |
| 14 HREF="cdrom.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_CDClose" | |
| 17 HREF="sdlcdclose.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_CDtrack" | |
| 20 HREF="sdlcdtrack.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="sdlcdclose.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="sdlcdtrack.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="SDLCD" | |
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74 ></A |
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75 >SDL_CD</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7566" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_CD -- CDROM Drive Information</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSECT1" | |
| 86 ><A | |
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87 NAME="AEN7569" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Structure Definition</H2 | |
| 91 ><PRE | |
| 92 CLASS="PROGRAMLISTING" | |
| 93 >typedef struct{ | |
| 94 int id; | |
| 95 CDstatus status; | |
| 96 int numtracks; | |
| 97 int cur_track; | |
| 98 int cur_frame; | |
| 99 SDL_CDtrack track[SDL_MAX_TRACKS+1]; | |
| 100 } SDL_CD;</PRE | |
| 101 ></DIV | |
| 102 ><DIV | |
| 103 CLASS="REFSECT1" | |
| 104 ><A | |
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105 NAME="AEN7572" |
| 0 | 106 ></A |
| 107 ><H2 | |
| 108 >Structure Data</H2 | |
| 109 ><DIV | |
| 110 CLASS="INFORMALTABLE" | |
| 111 ><A | |
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112 NAME="AEN7574" |
| 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 >id</I | |
| 128 ></TT | |
| 129 ></TD | |
| 130 ><TD | |
| 131 ALIGN="LEFT" | |
| 132 VALIGN="TOP" | |
| 133 >Private drive identifier</TD | |
| 134 ></TR | |
| 135 ><TR | |
| 136 ><TD | |
| 137 ALIGN="LEFT" | |
| 138 VALIGN="TOP" | |
| 139 ><TT | |
| 140 CLASS="STRUCTFIELD" | |
| 141 ><I | |
| 142 >status</I | |
| 143 ></TT | |
| 144 ></TD | |
| 145 ><TD | |
| 146 ALIGN="LEFT" | |
| 147 VALIGN="TOP" | |
| 148 >Drive <A | |
| 149 HREF="sdlcdstatus.html" | |
| 150 >status</A | |
| 151 ></TD | |
| 152 ></TR | |
| 153 ><TR | |
| 154 ><TD | |
| 155 ALIGN="LEFT" | |
| 156 VALIGN="TOP" | |
| 157 ><TT | |
| 158 CLASS="STRUCTFIELD" | |
| 159 ><I | |
| 160 >numtracks</I | |
| 161 ></TT | |
| 162 ></TD | |
| 163 ><TD | |
| 164 ALIGN="LEFT" | |
| 165 VALIGN="TOP" | |
| 166 >Number of tracks on the CD</TD | |
| 167 ></TR | |
| 168 ><TR | |
| 169 ><TD | |
| 170 ALIGN="LEFT" | |
| 171 VALIGN="TOP" | |
| 172 ><TT | |
| 173 CLASS="STRUCTFIELD" | |
| 174 ><I | |
| 175 >cur_track</I | |
| 176 ></TT | |
| 177 ></TD | |
| 178 ><TD | |
| 179 ALIGN="LEFT" | |
| 180 VALIGN="TOP" | |
| 181 >Current track</TD | |
| 182 ></TR | |
| 183 ><TR | |
| 184 ><TD | |
| 185 ALIGN="LEFT" | |
| 186 VALIGN="TOP" | |
| 187 ><TT | |
| 188 CLASS="STRUCTFIELD" | |
| 189 ><I | |
| 190 >cur_frame</I | |
| 191 ></TT | |
| 192 ></TD | |
| 193 ><TD | |
| 194 ALIGN="LEFT" | |
| 195 VALIGN="TOP" | |
| 196 >Current frame offset within the track</TD | |
| 197 ></TR | |
| 198 ><TR | |
| 199 ><TD | |
| 200 ALIGN="LEFT" | |
| 201 VALIGN="TOP" | |
| 202 ><TT | |
| 203 CLASS="STRUCTFIELD" | |
| 204 ><I | |
| 205 >track</I | |
| 206 ></TT | |
| 207 >[SDL_MAX_TRACKS+1]</TD | |
| 208 ><TD | |
| 209 ALIGN="LEFT" | |
| 210 VALIGN="TOP" | |
| 211 >Array of track descriptions. (see <A | |
| 212 HREF="sdlcdtrack.html" | |
| 213 ><SPAN | |
| 214 CLASS="STRUCTNAME" | |
| 215 >SDL_CDtrack</SPAN | |
| 216 ></A | |
| 217 >)</TD | |
| 218 ></TR | |
| 219 ></TBODY | |
| 220 ></TABLE | |
| 221 ><P | |
| 222 ></P | |
| 223 ></DIV | |
| 224 ></DIV | |
| 225 ><DIV | |
| 226 CLASS="REFSECT1" | |
| 227 ><A | |
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228 NAME="AEN7604" |
| 0 | 229 ></A |
| 230 ><H2 | |
| 231 >Description</H2 | |
| 232 ><P | |
| 233 >An <SPAN | |
| 234 CLASS="STRUCTNAME" | |
| 235 >SDL_CD</SPAN | |
| 236 > structure is returned by <A | |
| 237 HREF="sdlcdopen.html" | |
| 238 ><TT | |
| 239 CLASS="FUNCTION" | |
| 240 >SDL_CDOpen</TT | |
| 241 ></A | |
| 242 >. It represents an opened CDROM device and stores information on the layout of the tracks on the disc.</P | |
| 243 ><P | |
| 244 >A frame is the base data unit of a CD. <TT | |
| 245 CLASS="LITERAL" | |
| 246 >CD_FPS</TT | |
| 247 > frames is equal to 1 second of music. SDL provides two macros for converting between time and frames: <TT | |
| 248 CLASS="LITERAL" | |
| 249 >FRAMES_TO_MSF(f, M,S,F)</TT | |
| 250 > and <TT | |
| 251 CLASS="LITERAL" | |
| 252 >MSF_TO_FRAMES</TT | |
| 253 >.</P | |
| 254 ></DIV | |
| 255 ><DIV | |
| 256 CLASS="REFSECT1" | |
| 257 ><A | |
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258 NAME="AEN7614" |
| 0 | 259 ></A |
| 260 ><H2 | |
| 261 >Examples</H2 | |
| 262 ><PRE | |
| 263 CLASS="PROGRAMLISTING" | |
| 264 >int min, sec, frame; | |
| 265 int frame_offset; | |
| 266 | |
| 267 FRAMES_TO_MSF(cdrom->cur_frame, &min, &sec, &frame); | |
| 268 printf("Current Position: %d minutes, %d seconds, %d frames\n", min, sec, frame); | |
| 269 | |
| 270 frame_offset=MSF_TO_FRAMES(min, sec, frame);</PRE | |
| 271 ></DIV | |
| 272 ><DIV | |
| 273 CLASS="REFSECT1" | |
| 274 ><A | |
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275 NAME="AEN7617" |
| 0 | 276 ></A |
| 277 ><H2 | |
| 278 >See Also</H2 | |
| 279 ><P | |
| 280 ><A | |
| 281 HREF="sdlcdopen.html" | |
| 282 ><TT | |
| 283 CLASS="FUNCTION" | |
| 284 >SDL_CDOpen</TT | |
| 285 ></A | |
| 286 >, | |
| 287 <A | |
| 288 HREF="sdlcdtrack.html" | |
| 289 ><SPAN | |
| 290 CLASS="STRUCTNAME" | |
| 291 >SDL_CDtrack</SPAN | |
| 292 ></A | |
| 293 ></P | |
| 294 ></DIV | |
| 295 ><DIV | |
| 296 CLASS="NAVFOOTER" | |
| 297 ><HR | |
| 298 ALIGN="LEFT" | |
| 299 WIDTH="100%"><TABLE | |
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300 SUMMARY="Footer navigation table" |
| 0 | 301 WIDTH="100%" |
| 302 BORDER="0" | |
| 303 CELLPADDING="0" | |
| 304 CELLSPACING="0" | |
| 305 ><TR | |
| 306 ><TD | |
| 307 WIDTH="33%" | |
| 308 ALIGN="left" | |
| 309 VALIGN="top" | |
| 310 ><A | |
| 311 HREF="sdlcdclose.html" | |
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312 ACCESSKEY="P" |
| 0 | 313 >Prev</A |
| 314 ></TD | |
| 315 ><TD | |
| 316 WIDTH="34%" | |
| 317 ALIGN="center" | |
| 318 VALIGN="top" | |
| 319 ><A | |
| 320 HREF="index.html" | |
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321 ACCESSKEY="H" |
| 0 | 322 >Home</A |
| 323 ></TD | |
| 324 ><TD | |
| 325 WIDTH="33%" | |
| 326 ALIGN="right" | |
| 327 VALIGN="top" | |
| 328 ><A | |
| 329 HREF="sdlcdtrack.html" | |
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330 ACCESSKEY="N" |
| 0 | 331 >Next</A |
| 332 ></TD | |
| 333 ></TR | |
| 334 ><TR | |
| 335 ><TD | |
| 336 WIDTH="33%" | |
| 337 ALIGN="left" | |
| 338 VALIGN="top" | |
| 339 >SDL_CDClose</TD | |
| 340 ><TD | |
| 341 WIDTH="34%" | |
| 342 ALIGN="center" | |
| 343 VALIGN="top" | |
| 344 ><A | |
| 345 HREF="cdrom.html" | |
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346 ACCESSKEY="U" |
| 0 | 347 >Up</A |
| 348 ></TD | |
| 349 ><TD | |
| 350 WIDTH="33%" | |
| 351 ALIGN="right" | |
| 352 VALIGN="top" | |
| 353 >SDL_CDtrack</TD | |
| 354 ></TR | |
| 355 ></TABLE | |
| 356 ></DIV | |
| 357 ></BODY | |
| 358 ></HTML | |
| 359 > |