Mercurial > sdl-ios-xcode
annotate docs/html/sdlloadwav.html @ 571:8e3ce997621c
Date: Thu, 16 Jan 2003 13:48:31 +0200
From: "Mike Gorchak"
Subject: All QNX patches
whole patches concerning QNX. Almost all code has been rewritten by Julian
and me. Added initial support for hw overlays in QNX and many many others
fixes.
P.S. This patches has been reviewed by Dave Rempel from QSSL and included in
SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1
version of QNX, which will be available soon.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 20 Jan 2003 01:38:37 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_LoadWAV</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 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_GetAudioStatus" | |
| 17 HREF="sdlgetaudiostatus.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_FreeWAV" | |
| 20 HREF="sdlfreewav.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 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdlgetaudiostatus.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlfreewav.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLLOADWAV" | |
| 71 >SDL_LoadWAV</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN6428" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_LoadWAV -- Load a WAVE file</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN6431" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
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91 NAME="AEN6432" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
| 97 >#include "SDL.h"</PRE | |
| 98 ><P | |
| 99 ><CODE | |
| 100 ><CODE | |
| 101 CLASS="FUNCDEF" | |
| 102 >SDL_AudioSpec *<B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_LoadWAV</B | |
| 105 ></CODE | |
| 106 >(const char *file, SDL_AudioSpec *spec, Uint8 **audio_buf, Uint32 *audio_len);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN6438" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 ><TT | |
| 121 CLASS="FUNCTION" | |
| 122 >SDL_LoadWAV</TT | |
| 123 > | |
| 124 This function loads a WAVE <TT | |
| 125 CLASS="PARAMETER" | |
| 126 ><I | |
| 127 >file</I | |
| 128 ></TT | |
| 129 > into memory.</P | |
| 130 ><P | |
| 131 >If this function succeeds, it returns the given | |
| 132 <A | |
| 133 HREF="sdlaudiospec.html" | |
| 134 ><TT | |
| 135 CLASS="FUNCTION" | |
| 136 >SDL_AudioSpec</TT | |
| 137 ></A | |
| 138 >, | |
| 139 filled with the audio data format of the wave data, and sets | |
| 140 <TT | |
| 141 CLASS="PARAMETER" | |
| 142 ><I | |
| 143 >audio_buf</I | |
| 144 ></TT | |
| 145 > to a <TT | |
| 146 CLASS="FUNCTION" | |
| 147 >malloc</TT | |
| 148 >'d | |
| 149 buffer containing the audio data, and sets <TT | |
| 150 CLASS="PARAMETER" | |
| 151 ><I | |
| 152 >audio_len</I | |
| 153 ></TT | |
| 154 > | |
| 155 to the length of that audio buffer, in bytes. You need to free the audio | |
| 156 buffer with <A | |
| 157 HREF="sdlfreewav.html" | |
| 158 ><TT | |
| 159 CLASS="FUNCTION" | |
| 160 >SDL_FreeWAV</TT | |
| 161 ></A | |
| 162 > when you are | |
| 163 done with it.</P | |
| 164 ><P | |
| 165 >This function returns <TT | |
| 166 CLASS="LITERAL" | |
| 167 >NULL</TT | |
| 168 > and sets the SDL | |
| 169 error message if the wave file cannot be opened, uses an unknown data format, | |
| 170 or is corrupt. Currently raw, MS-ADPCM and IMA-ADPCM WAVE files are supported.</P | |
| 171 ></DIV | |
| 172 ><DIV | |
| 173 CLASS="REFSECT1" | |
| 174 ><A | |
|
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175 NAME="AEN6453" |
| 0 | 176 ></A |
| 177 ><H2 | |
| 178 >Example</H2 | |
| 179 ><PRE | |
| 180 CLASS="PROGRAMLISTING" | |
| 181 >SDL_AudioSpec wav_spec; | |
| 182 Uint32 wav_length; | |
| 183 Uint8 *wav_buffer; | |
| 184 | |
| 185 /* Load the WAV */ | |
| 186 if( SDL_LoadWAV("test.wav", &wav_spec, &wav_buffer, &wav_length) == NULL ){ | |
| 187 fprintf(stderr, "Could not open test.wav: %s\n", SDL_GetError()); | |
| 188 exit(-1); | |
| 189 } | |
| 190 . | |
| 191 . | |
| 192 . | |
| 193 /* Do stuff with the WAV */ | |
| 194 . | |
| 195 . | |
| 196 /* Free It */ | |
| 197 SDL_FreeWAV(wav_buffer);</PRE | |
| 198 ></DIV | |
| 199 ><DIV | |
| 200 CLASS="REFSECT1" | |
| 201 ><A | |
|
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202 NAME="AEN6456" |
| 0 | 203 ></A |
| 204 ><H2 | |
| 205 >See Also</H2 | |
| 206 ><P | |
| 207 ><A | |
| 208 HREF="sdlaudiospec.html" | |
| 209 ><SPAN | |
| 210 CLASS="STRUCTNAME" | |
| 211 >SDL_AudioSpec</SPAN | |
| 212 ></A | |
| 213 >, | |
| 214 <A | |
| 215 HREF="sdlopenaudio.html" | |
| 216 ><TT | |
| 217 CLASS="FUNCTION" | |
| 218 >SDL_OpenAudio</TT | |
| 219 ></A | |
| 220 >, | |
| 221 <A | |
| 222 HREF="sdlfreewav.html" | |
| 223 ><TT | |
| 224 CLASS="FUNCTION" | |
| 225 >SDL_FreeWAV</TT | |
| 226 ></A | |
| 227 ></P | |
| 228 ></DIV | |
| 229 ><DIV | |
| 230 CLASS="NAVFOOTER" | |
| 231 ><HR | |
| 232 ALIGN="LEFT" | |
| 233 WIDTH="100%"><TABLE | |
| 234 WIDTH="100%" | |
| 235 BORDER="0" | |
| 236 CELLPADDING="0" | |
| 237 CELLSPACING="0" | |
| 238 ><TR | |
| 239 ><TD | |
| 240 WIDTH="33%" | |
| 241 ALIGN="left" | |
| 242 VALIGN="top" | |
| 243 ><A | |
| 244 HREF="sdlgetaudiostatus.html" | |
| 245 >Prev</A | |
| 246 ></TD | |
| 247 ><TD | |
| 248 WIDTH="34%" | |
| 249 ALIGN="center" | |
| 250 VALIGN="top" | |
| 251 ><A | |
| 252 HREF="index.html" | |
| 253 >Home</A | |
| 254 ></TD | |
| 255 ><TD | |
| 256 WIDTH="33%" | |
| 257 ALIGN="right" | |
| 258 VALIGN="top" | |
| 259 ><A | |
| 260 HREF="sdlfreewav.html" | |
| 261 >Next</A | |
| 262 ></TD | |
| 263 ></TR | |
| 264 ><TR | |
| 265 ><TD | |
| 266 WIDTH="33%" | |
| 267 ALIGN="left" | |
| 268 VALIGN="top" | |
| 269 >SDL_GetAudioStatus</TD | |
| 270 ><TD | |
| 271 WIDTH="34%" | |
| 272 ALIGN="center" | |
| 273 VALIGN="top" | |
| 274 ><A | |
| 275 HREF="audio.html" | |
| 276 >Up</A | |
| 277 ></TD | |
| 278 ><TD | |
| 279 WIDTH="33%" | |
| 280 ALIGN="right" | |
| 281 VALIGN="top" | |
| 282 >SDL_FreeWAV</TD | |
| 283 ></TR | |
| 284 ></TABLE | |
| 285 ></DIV | |
| 286 ></BODY | |
| 287 ></HTML | |
| 288 > |