Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickupdate.html @ 2866:e532417a6977
Fixed SDL 1.2 compatibility problem.
The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec
with the correct samples and size set by the driver. This value is important
since it may be used by applications that size audio buffers, etc.
However, we want to allow advanced applications to call SDL_OpenAudioDevice()
which gets passed a const 'desired' parameter, and have the correct data filled
into the 'obtained' parameter, possibly allowing or not allowing format changes.
So... 'obtained' becomes the audio format the user callback is expected to use,
and we add flags to allow the application to specify which format changes are
allowed.
Note: We really need to add a way to query the 'obtained' audio spec.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 13 Dec 2008 06:36:47 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_JoystickUpdate</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="Joystick" | |
| 14 HREF="joystick.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_JoystickNumButtons" | |
| 17 HREF="sdljoysticknumbuttons.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_JoystickGetAxis" | |
| 20 HREF="sdljoystickgetaxis.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="sdljoysticknumbuttons.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="sdljoystickgetaxis.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="SDLJOYSTICKUPDATE" | |
|
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74 ></A |
|
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75 >SDL_JoystickUpdate</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN6296" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_JoystickUpdate -- Updates the state of all joysticks</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN6299" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN6300" |
| 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 >void <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_JoystickUpdate</B | |
| 108 ></CODE | |
| 109 >(void);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN6306" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >Updates the state(position, buttons, etc.) of all open joysticks. If joystick events have been enabled with <A | |
| 124 HREF="sdljoystickeventstate.html" | |
| 125 ><TT | |
| 126 CLASS="FUNCTION" | |
| 127 >SDL_JoystickEventState</TT | |
| 128 ></A | |
| 129 > then this is called automatically in the event loop.</P | |
| 130 ></DIV | |
| 131 ><DIV | |
| 132 CLASS="REFSECT1" | |
| 133 ><A | |
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134 NAME="AEN6311" |
| 0 | 135 ></A |
| 136 ><H2 | |
| 137 >See Also</H2 | |
| 138 ><P | |
| 139 ><A | |
| 140 HREF="sdljoystickeventstate.html" | |
| 141 ><TT | |
| 142 CLASS="FUNCTION" | |
| 143 >SDL_JoystickEventState</TT | |
| 144 ></A | |
| 145 ></P | |
| 146 ></DIV | |
| 147 ><DIV | |
| 148 CLASS="NAVFOOTER" | |
| 149 ><HR | |
| 150 ALIGN="LEFT" | |
| 151 WIDTH="100%"><TABLE | |
|
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parents:
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152 SUMMARY="Footer navigation table" |
| 0 | 153 WIDTH="100%" |
| 154 BORDER="0" | |
| 155 CELLPADDING="0" | |
| 156 CELLSPACING="0" | |
| 157 ><TR | |
| 158 ><TD | |
| 159 WIDTH="33%" | |
| 160 ALIGN="left" | |
| 161 VALIGN="top" | |
| 162 ><A | |
| 163 HREF="sdljoysticknumbuttons.html" | |
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355632dca928
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parents:
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diff
changeset
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164 ACCESSKEY="P" |
| 0 | 165 >Prev</A |
| 166 ></TD | |
| 167 ><TD | |
| 168 WIDTH="34%" | |
| 169 ALIGN="center" | |
| 170 VALIGN="top" | |
| 171 ><A | |
| 172 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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173 ACCESSKEY="H" |
| 0 | 174 >Home</A |
| 175 ></TD | |
| 176 ><TD | |
| 177 WIDTH="33%" | |
| 178 ALIGN="right" | |
| 179 VALIGN="top" | |
| 180 ><A | |
| 181 HREF="sdljoystickgetaxis.html" | |
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803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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182 ACCESSKEY="N" |
| 0 | 183 >Next</A |
| 184 ></TD | |
| 185 ></TR | |
| 186 ><TR | |
| 187 ><TD | |
| 188 WIDTH="33%" | |
| 189 ALIGN="left" | |
| 190 VALIGN="top" | |
| 191 >SDL_JoystickNumButtons</TD | |
| 192 ><TD | |
| 193 WIDTH="34%" | |
| 194 ALIGN="center" | |
| 195 VALIGN="top" | |
| 196 ><A | |
| 197 HREF="joystick.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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198 ACCESSKEY="U" |
| 0 | 199 >Up</A |
| 200 ></TD | |
| 201 ><TD | |
| 202 WIDTH="33%" | |
| 203 ALIGN="right" | |
| 204 VALIGN="top" | |
| 205 >SDL_JoystickGetAxis</TD | |
| 206 ></TR | |
| 207 ></TABLE | |
| 208 ></DIV | |
| 209 ></BODY | |
| 210 ></HTML | |
| 211 > |