Mercurial > sdl-ios-xcode
annotate docs/html/sdlcdtrack.html @ 3096:ae4e80dbe330
Date: Tue, 17 Feb 2009 14:00:25 +0100
From: Stefan Klug
Subject: [SDL] Possible bug, paused audio playing garbage
On my WinCE device a paused audio device plays random garbage.
This might also be the issue in the thread "sound cracks with SDL_mixer
and AUDIO_S16LSB"
I don't have that much knowledge of the SDL audio part, but the attached
patch fixes it for me, and collapses two redundant ifs.
I'm not sure if this is the correct way to fix this.
Shouldn't the complete stream conversion part of the RunAudio loop be
dependent on the paused property of the device? (not only the call to
(*fill)(udata, istream, istream_len).
Anyways. Would be great if the patch or a fix could find its way to SVN ;-)
Cheers
Stefan
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 23 Mar 2009 05:21:40 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_CDtrack</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_CD" | |
| 17 HREF="sdlcd.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="Multi-threaded Programming" | |
| 20 HREF="thread.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="sdlcd.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="thread.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="SDLCDTRACK" | |
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74 ></A |
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75 >SDL_CDtrack</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7628" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_CDtrack -- CD Track Information Structure</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSECT1" | |
| 86 ><A | |
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87 NAME="AEN7631" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Structure Definition</H2 | |
| 91 ><PRE | |
| 92 CLASS="PROGRAMLISTING" | |
| 93 >typedef struct{ | |
| 94 Uint8 id; | |
| 95 Uint8 type; | |
| 96 Uint32 length; | |
| 97 Uint32 offset; | |
| 98 } SDL_CDtrack;</PRE | |
| 99 ></DIV | |
| 100 ><DIV | |
| 101 CLASS="REFSECT1" | |
| 102 ><A | |
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103 NAME="AEN7634" |
| 0 | 104 ></A |
| 105 ><H2 | |
| 106 >Structure Data</H2 | |
| 107 ><DIV | |
| 108 CLASS="INFORMALTABLE" | |
| 109 ><A | |
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110 NAME="AEN7636" |
| 0 | 111 ></A |
| 112 ><P | |
| 113 ></P | |
| 114 ><TABLE | |
| 115 BORDER="0" | |
| 116 CLASS="CALSTABLE" | |
| 117 ><TBODY | |
| 118 ><TR | |
| 119 ><TD | |
| 120 ALIGN="LEFT" | |
| 121 VALIGN="TOP" | |
| 122 ><TT | |
| 123 CLASS="STRUCTFIELD" | |
| 124 ><I | |
| 125 >id</I | |
| 126 ></TT | |
| 127 ></TD | |
| 128 ><TD | |
| 129 ALIGN="LEFT" | |
| 130 VALIGN="TOP" | |
| 131 >Track number (0-99)</TD | |
| 132 ></TR | |
| 133 ><TR | |
| 134 ><TD | |
| 135 ALIGN="LEFT" | |
| 136 VALIGN="TOP" | |
| 137 ><TT | |
| 138 CLASS="STRUCTFIELD" | |
| 139 ><I | |
| 140 >type</I | |
| 141 ></TT | |
| 142 ></TD | |
| 143 ><TD | |
| 144 ALIGN="LEFT" | |
| 145 VALIGN="TOP" | |
| 146 ><TT | |
| 147 CLASS="LITERAL" | |
| 148 >SDL_AUDIO_TRACK</TT | |
| 149 > or <TT | |
| 150 CLASS="LITERAL" | |
| 151 >SDL_DATA_TRACK</TT | |
| 152 ></TD | |
| 153 ></TR | |
| 154 ><TR | |
| 155 ><TD | |
| 156 ALIGN="LEFT" | |
| 157 VALIGN="TOP" | |
| 158 ><TT | |
| 159 CLASS="STRUCTFIELD" | |
| 160 ><I | |
| 161 >length</I | |
| 162 ></TT | |
| 163 ></TD | |
| 164 ><TD | |
| 165 ALIGN="LEFT" | |
| 166 VALIGN="TOP" | |
| 167 >Length, in frames, of this track</TD | |
| 168 ></TR | |
| 169 ><TR | |
| 170 ><TD | |
| 171 ALIGN="LEFT" | |
| 172 VALIGN="TOP" | |
| 173 ><TT | |
| 174 CLASS="STRUCTFIELD" | |
| 175 ><I | |
| 176 >offset</I | |
| 177 ></TT | |
| 178 ></TD | |
| 179 ><TD | |
| 180 ALIGN="LEFT" | |
| 181 VALIGN="TOP" | |
| 182 >Frame offset to the beginning of this track</TD | |
| 183 ></TR | |
| 184 ></TBODY | |
| 185 ></TABLE | |
| 186 ><P | |
| 187 ></P | |
| 188 ></DIV | |
| 189 ></DIV | |
| 190 ><DIV | |
| 191 CLASS="REFSECT1" | |
| 192 ><A | |
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193 NAME="AEN7657" |
| 0 | 194 ></A |
| 195 ><H2 | |
| 196 >Description</H2 | |
| 197 ><P | |
| 198 ><SPAN | |
| 199 CLASS="STRUCTNAME" | |
| 200 >SDL_CDtrack</SPAN | |
| 201 > stores data on each track on a CD, its fields should be pretty self explainatory. It is a member a the <A | |
| 202 HREF="sdlcd.html" | |
| 203 ><SPAN | |
| 204 CLASS="STRUCTNAME" | |
| 205 >SDL_CD</SPAN | |
| 206 ></A | |
| 207 > structure.</P | |
| 208 ><DIV | |
| 209 CLASS="NOTE" | |
| 210 ><BLOCKQUOTE | |
| 211 CLASS="NOTE" | |
| 212 ><P | |
| 213 ><B | |
| 214 >Note: </B | |
| 215 >Frames can be converted to standard timings. There are <TT | |
| 216 CLASS="LITERAL" | |
| 217 >CD_FPS</TT | |
| 218 > frames per second, so <SPAN | |
| 219 CLASS="STRUCTNAME" | |
| 220 >SDL_CDtrack</SPAN | |
| 221 >.<TT | |
| 222 CLASS="STRUCTFIELD" | |
| 223 ><I | |
| 224 >length</I | |
| 225 ></TT | |
| 226 >/<TT | |
| 227 CLASS="LITERAL" | |
| 228 >CD_FPS</TT | |
| 229 >=length_in_seconds.</P | |
| 230 ></BLOCKQUOTE | |
| 231 ></DIV | |
| 232 ></DIV | |
| 233 ><DIV | |
| 234 CLASS="REFSECT1" | |
| 235 ><A | |
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236 NAME="AEN7669" |
| 0 | 237 ></A |
| 238 ><H2 | |
| 239 >See Also</H2 | |
| 240 ><P | |
| 241 ><A | |
| 242 HREF="sdlcd.html" | |
| 243 ><SPAN | |
| 244 CLASS="STRUCTNAME" | |
| 245 >SDL_CD</SPAN | |
| 246 ></A | |
| 247 ></P | |
| 248 ></DIV | |
| 249 ><DIV | |
| 250 CLASS="NAVFOOTER" | |
| 251 ><HR | |
| 252 ALIGN="LEFT" | |
| 253 WIDTH="100%"><TABLE | |
|
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254 SUMMARY="Footer navigation table" |
| 0 | 255 WIDTH="100%" |
| 256 BORDER="0" | |
| 257 CELLPADDING="0" | |
| 258 CELLSPACING="0" | |
| 259 ><TR | |
| 260 ><TD | |
| 261 WIDTH="33%" | |
| 262 ALIGN="left" | |
| 263 VALIGN="top" | |
| 264 ><A | |
| 265 HREF="sdlcd.html" | |
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266 ACCESSKEY="P" |
| 0 | 267 >Prev</A |
| 268 ></TD | |
| 269 ><TD | |
| 270 WIDTH="34%" | |
| 271 ALIGN="center" | |
| 272 VALIGN="top" | |
| 273 ><A | |
| 274 HREF="index.html" | |
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275 ACCESSKEY="H" |
| 0 | 276 >Home</A |
| 277 ></TD | |
| 278 ><TD | |
| 279 WIDTH="33%" | |
| 280 ALIGN="right" | |
| 281 VALIGN="top" | |
| 282 ><A | |
| 283 HREF="thread.html" | |
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284 ACCESSKEY="N" |
| 0 | 285 >Next</A |
| 286 ></TD | |
| 287 ></TR | |
| 288 ><TR | |
| 289 ><TD | |
| 290 WIDTH="33%" | |
| 291 ALIGN="left" | |
| 292 VALIGN="top" | |
| 293 >SDL_CD</TD | |
| 294 ><TD | |
| 295 WIDTH="34%" | |
| 296 ALIGN="center" | |
| 297 VALIGN="top" | |
| 298 ><A | |
| 299 HREF="cdrom.html" | |
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300 ACCESSKEY="U" |
| 0 | 301 >Up</A |
| 302 ></TD | |
| 303 ><TD | |
| 304 WIDTH="33%" | |
| 305 ALIGN="right" | |
| 306 VALIGN="top" | |
| 307 >Multi-threaded Programming</TD | |
| 308 ></TR | |
| 309 ></TABLE | |
| 310 ></DIV | |
| 311 ></BODY | |
| 312 ></HTML | |
| 313 > |