Mercurial > sdl-ios-xcode
annotate docs/html/guideaudioexamples.html @ 1135:cf6133247d34
Mac Classic and CodeWarrior patches.
--ryan.
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Subject: Re: [SDL] Updated Mac patch
Date: Tue, 6 Sep 2005 15:21:27 +0200
To: A list for developers using the SDL library <sdl@libsdl.org>
Earlier, I wrote:
> Updated the previous Mac patch to disable Carbon by default.
> Also "fixed" the SDL.spec again, so that it builds on Darwin.
>
> http://www.algonet.se/~afb/SDL-1.2.9-mac.patch
> Also applied fine to SDL12 CVS, when I tried it.
>
> Haven't completed any new packaging or projects for Xcode/PB,
> but it seems to build and install fine here (in development).
Tested the new patch to build with old CodeWarrior and MPW,
and it seems it needed some hacks with those old headers...
Just in case you want to support the archeological versions -
here is a small add-on to the above patch, to fix those...
http://www.algonet.se/~afb/SDL-1.2.9-classic.patch
I couldn't get the old CW5 projects to build without a few
modifications - such as deleting the stray old header in:
"CWprojects/Support/Carbon/Include/ConditionalMacros.h" ?
But I updated both projects to CW6 too and built for Carbon,
and it ran all of the Mac test projects without any problems.
The MPW file seems to have compiled, with a small order change.
As long as you're still shipping the CWProjects and MPWmake
with the download, they should probably be updated/fixed ?
(another "solution" would of course be to just delete them)
I'll post my new projects along with the new Xcode projects
later on, along with XML exports of the various .mcp files.
(CW5 builds for Classic / "PPC", and CW6 builds for Carbon)
It'll be packaged as a part of the next SpriteWorld X release...
http://spriteworldx.sourceforge.net/ [Classic/Carbon/Win/X11]
--anders
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 08 Sep 2005 06:34:28 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Audio Examples</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="Examples" | |
| 14 HREF="guideexamples.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="Event Examples" | |
| 17 HREF="guideeventexamples.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="CDROM Examples" | |
| 20 HREF="guidecdromexamples.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="SECT1" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="guideeventexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 >Chapter 4. Examples</TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="guidecdromexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><DIV | |
| 72 CLASS="SECT1" | |
| 73 ><H1 | |
| 74 CLASS="SECT1" | |
| 75 ><A | |
| 76 NAME="GUIDEAUDIOEXAMPLES" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
77 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
78 >Audio Examples</H1 |
| 0 | 79 ><P |
| 80 ></P | |
| 81 ><DIV | |
| 82 CLASS="SECT2" | |
| 83 ><H2 | |
| 84 CLASS="SECT2" | |
| 85 ><A | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
86 NAME="AEN382" |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
88 >Opening the audio device</H2 |
| 0 | 89 ><P |
| 90 ><PRE | |
| 91 CLASS="PROGRAMLISTING" | |
| 92 > SDL_AudioSpec wanted; | |
| 93 extern void fill_audio(void *udata, Uint8 *stream, int len); | |
| 94 | |
| 95 /* Set the audio format */ | |
| 96 wanted.freq = 22050; | |
| 97 wanted.format = AUDIO_S16; | |
| 98 wanted.channels = 2; /* 1 = mono, 2 = stereo */ | |
| 99 wanted.samples = 1024; /* Good low-latency value for callback */ | |
| 100 wanted.callback = fill_audio; | |
| 101 wanted.userdata = NULL; | |
| 102 | |
| 103 /* Open the audio device, forcing the desired format */ | |
| 104 if ( SDL_OpenAudio(&wanted, NULL) < 0 ) { | |
| 105 fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError()); | |
| 106 return(-1); | |
| 107 } | |
| 108 return(0);</PRE | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ><DIV | |
| 112 CLASS="SECT2" | |
| 113 ><H2 | |
| 114 CLASS="SECT2" | |
| 115 ><A | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
116 NAME="AEN386" |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
117 ></A |
|
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
118 >Playing audio</H2 |
| 0 | 119 ><P |
| 120 ><PRE | |
| 121 CLASS="PROGRAMLISTING" | |
| 122 > static Uint8 *audio_chunk; | |
| 123 static Uint32 audio_len; | |
| 124 static Uint8 *audio_pos; | |
| 125 | |
| 126 /* The audio function callback takes the following parameters: | |
| 127 stream: A pointer to the audio buffer to be filled | |
| 128 len: The length (in bytes) of the audio buffer | |
| 129 */ | |
| 130 void fill_audio(void *udata, Uint8 *stream, int len) | |
| 131 { | |
| 132 /* Only play if we have data left */ | |
| 133 if ( audio_len == 0 ) | |
| 134 return; | |
| 135 | |
| 136 /* Mix as much data as possible */ | |
| 137 len = ( len > audio_len ? audio_len : len ); | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
138 SDL_MixAudio(stream, audio_pos, len, SDL_MIX_MAXVOLUME); |
| 0 | 139 audio_pos += len; |
| 140 audio_len -= len; | |
| 141 } | |
| 142 | |
| 143 /* Load the audio data ... */ | |
| 144 | |
| 145 ;;;;; | |
| 146 | |
| 147 audio_pos = audio_chunk; | |
| 148 | |
| 149 /* Let the callback function play the audio chunk */ | |
| 150 SDL_PauseAudio(0); | |
| 151 | |
| 152 /* Do some processing */ | |
| 153 | |
| 154 ;;;;; | |
| 155 | |
| 156 /* Wait for sound to complete */ | |
| 157 while ( audio_len > 0 ) { | |
| 158 SDL_Delay(100); /* Sleep 1/10 second */ | |
| 159 } | |
| 160 SDL_CloseAudio();</PRE | |
| 161 ></P | |
| 162 ></DIV | |
| 163 ></DIV | |
| 164 ><DIV | |
| 165 CLASS="NAVFOOTER" | |
| 166 ><HR | |
| 167 ALIGN="LEFT" | |
| 168 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
169 SUMMARY="Footer navigation table" |
| 0 | 170 WIDTH="100%" |
| 171 BORDER="0" | |
| 172 CELLPADDING="0" | |
| 173 CELLSPACING="0" | |
| 174 ><TR | |
| 175 ><TD | |
| 176 WIDTH="33%" | |
| 177 ALIGN="left" | |
| 178 VALIGN="top" | |
| 179 ><A | |
| 180 HREF="guideeventexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
181 ACCESSKEY="P" |
| 0 | 182 >Prev</A |
| 183 ></TD | |
| 184 ><TD | |
| 185 WIDTH="34%" | |
| 186 ALIGN="center" | |
| 187 VALIGN="top" | |
| 188 ><A | |
| 189 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
190 ACCESSKEY="H" |
| 0 | 191 >Home</A |
| 192 ></TD | |
| 193 ><TD | |
| 194 WIDTH="33%" | |
| 195 ALIGN="right" | |
| 196 VALIGN="top" | |
| 197 ><A | |
| 198 HREF="guidecdromexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
199 ACCESSKEY="N" |
| 0 | 200 >Next</A |
| 201 ></TD | |
| 202 ></TR | |
| 203 ><TR | |
| 204 ><TD | |
| 205 WIDTH="33%" | |
| 206 ALIGN="left" | |
| 207 VALIGN="top" | |
| 208 >Event Examples</TD | |
| 209 ><TD | |
| 210 WIDTH="34%" | |
| 211 ALIGN="center" | |
| 212 VALIGN="top" | |
| 213 ><A | |
| 214 HREF="guideexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
215 ACCESSKEY="U" |
| 0 | 216 >Up</A |
| 217 ></TD | |
| 218 ><TD | |
| 219 WIDTH="33%" | |
| 220 ALIGN="right" | |
| 221 VALIGN="top" | |
| 222 >CDROM Examples</TD | |
| 223 ></TR | |
| 224 ></TABLE | |
| 225 ></DIV | |
| 226 ></BODY | |
| 227 ></HTML | |
| 228 > |