Mercurial > sdl-ios-xcode
annotate docs/html/sdlbuildaudiocvt.html @ 1614:6162b8d921ce
Date: Wed, 29 Mar 2006 17:26:55 +0200 CEST
From: "Fran���is Revol"
Subject: [SDL] BeOS port fix: PrintScreen key crashing
It seems the latest SDL crashes when someone hits the PrtScrn key in
ZETA (BeOS R6), somewhere it gets a negative value as key code (or a
big unsigned maybe ?), and uses it as an index in the keysym table...
I'll investigate the cause for the negative value, but it's always
better to check for bounds correctly when indexing a table. The
attached diff fixes it.
Fran���is Revol
--
Software Architect
yellowTAB GmbH
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 31 Mar 2006 06:16:20 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_BuildAudioCVT</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="Audio" | |
| 14 HREF="audio.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_AudioCVT" | |
| 17 HREF="sdlaudiocvt.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_ConvertAudio" | |
| 20 HREF="sdlconvertaudio.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="sdlaudiocvt.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="sdlconvertaudio.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="SDLBUILDAUDIOCVT" | |
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74 ></A |
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75 >SDL_BuildAudioCVT</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7002" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_BuildAudioCVT -- Initializes a SDL_AudioCVT structure for conversion</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN7005" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN7006" |
| 0 | 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_BuildAudioCVT</B | |
| 108 ></CODE | |
| 109 >(SDL_AudioCVT *cvt, Uint16 src_format, Uint8 src_channels, int src_rate, Uint16 dst_format, Uint8 dst_channels, int dst_rate);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN7012" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Before an <A | |
| 124 HREF="sdlaudiocvt.html" | |
| 125 ><SPAN | |
| 126 CLASS="STRUCTNAME" | |
| 127 >SDL_AudioCVT</SPAN | |
| 128 ></A | |
| 129 > structure can be used to convert audio data it must be initialized with source and destination information. </P | |
| 130 ><P | |
| 131 ><TT | |
| 132 CLASS="PARAMETER" | |
| 133 ><I | |
| 134 >src_format</I | |
| 135 ></TT | |
| 136 > and <TT | |
| 137 CLASS="PARAMETER" | |
| 138 ><I | |
| 139 >dst_format</I | |
| 140 ></TT | |
| 141 > are the source and destination format of the conversion. (For information on audio formats see <A | |
| 142 HREF="sdlaudiospec.html" | |
| 143 ><SPAN | |
| 144 CLASS="STRUCTNAME" | |
| 145 > SDL_AudioSpec</SPAN | |
| 146 ></A | |
| 147 >). <TT | |
| 148 CLASS="PARAMETER" | |
| 149 ><I | |
| 150 >src_channels</I | |
| 151 ></TT | |
| 152 > and <TT | |
| 153 CLASS="PARAMETER" | |
| 154 ><I | |
| 155 >dst_channels</I | |
| 156 ></TT | |
| 157 > are the number of channels in the source and destination formats. Finally, <TT | |
| 158 CLASS="PARAMETER" | |
| 159 ><I | |
| 160 >src_rate</I | |
| 161 ></TT | |
| 162 > and <TT | |
| 163 CLASS="PARAMETER" | |
| 164 ><I | |
| 165 >dst_rate</I | |
| 166 ></TT | |
| 167 > are the frequency or samples-per-second of the source and destination formats. Once again, see <A | |
| 168 HREF="sdlaudiospec.html" | |
| 169 ><SPAN | |
| 170 CLASS="STRUCTNAME" | |
| 171 >SDL_AudioSpec</SPAN | |
| 172 ></A | |
| 173 >.</P | |
| 174 ></DIV | |
| 175 ><DIV | |
| 176 CLASS="REFSECT1" | |
| 177 ><A | |
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178 NAME="AEN7028" |
| 0 | 179 ></A |
| 180 ><H2 | |
| 181 >Return Values</H2 | |
| 182 ><P | |
| 183 >Returns <SPAN | |
| 184 CLASS="RETURNVALUE" | |
| 185 >-1</SPAN | |
| 186 > if the filter could not be built or 1 if it could.</P | |
| 187 ></DIV | |
| 188 ><DIV | |
| 189 CLASS="REFSECT1" | |
| 190 ><A | |
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191 NAME="AEN7032" |
| 0 | 192 ></A |
| 193 ><H2 | |
| 194 >Examples</H2 | |
| 195 ><P | |
| 196 >See <A | |
| 197 HREF="sdlconvertaudio.html" | |
| 198 ><TT | |
| 199 CLASS="FUNCTION" | |
| 200 >SDL_ConvertAudio</TT | |
| 201 ></A | |
| 202 >.</P | |
| 203 ></DIV | |
| 204 ><DIV | |
| 205 CLASS="REFSECT1" | |
| 206 ><A | |
|
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207 NAME="AEN7037" |
| 0 | 208 ></A |
| 209 ><H2 | |
| 210 >See Also</H2 | |
| 211 ><P | |
| 212 ><A | |
| 213 HREF="sdlconvertaudio.html" | |
| 214 ><TT | |
| 215 CLASS="FUNCTION" | |
| 216 >SDL_ConvertAudio</TT | |
| 217 ></A | |
| 218 >, | |
| 219 <A | |
| 220 HREF="sdlaudiocvt.html" | |
| 221 ><TT | |
| 222 CLASS="FUNCTION" | |
| 223 >SDL_AudioCVT</TT | |
| 224 ></A | |
| 225 ></P | |
| 226 ></DIV | |
| 227 ><DIV | |
| 228 CLASS="NAVFOOTER" | |
| 229 ><HR | |
| 230 ALIGN="LEFT" | |
| 231 WIDTH="100%"><TABLE | |
|
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232 SUMMARY="Footer navigation table" |
| 0 | 233 WIDTH="100%" |
| 234 BORDER="0" | |
| 235 CELLPADDING="0" | |
| 236 CELLSPACING="0" | |
| 237 ><TR | |
| 238 ><TD | |
| 239 WIDTH="33%" | |
| 240 ALIGN="left" | |
| 241 VALIGN="top" | |
| 242 ><A | |
| 243 HREF="sdlaudiocvt.html" | |
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803
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parents:
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244 ACCESSKEY="P" |
| 0 | 245 >Prev</A |
| 246 ></TD | |
| 247 ><TD | |
| 248 WIDTH="34%" | |
| 249 ALIGN="center" | |
| 250 VALIGN="top" | |
| 251 ><A | |
| 252 HREF="index.html" | |
|
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253 ACCESSKEY="H" |
| 0 | 254 >Home</A |
| 255 ></TD | |
| 256 ><TD | |
| 257 WIDTH="33%" | |
| 258 ALIGN="right" | |
| 259 VALIGN="top" | |
| 260 ><A | |
| 261 HREF="sdlconvertaudio.html" | |
|
803
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262 ACCESSKEY="N" |
| 0 | 263 >Next</A |
| 264 ></TD | |
| 265 ></TR | |
| 266 ><TR | |
| 267 ><TD | |
| 268 WIDTH="33%" | |
| 269 ALIGN="left" | |
| 270 VALIGN="top" | |
| 271 >SDL_AudioCVT</TD | |
| 272 ><TD | |
| 273 WIDTH="34%" | |
| 274 ALIGN="center" | |
| 275 VALIGN="top" | |
| 276 ><A | |
| 277 HREF="audio.html" | |
|
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278 ACCESSKEY="U" |
| 0 | 279 >Up</A |
| 280 ></TD | |
| 281 ><TD | |
| 282 WIDTH="33%" | |
| 283 ALIGN="right" | |
| 284 VALIGN="top" | |
| 285 >SDL_ConvertAudio</TD | |
| 286 ></TR | |
| 287 ></TABLE | |
| 288 ></DIV | |
| 289 ></BODY | |
| 290 ></HTML | |
| 291 > |