Mercurial > sdl-ios-xcode
annotate docs/html/sdllockaudio.html @ 4165:3b8ac3d311a2 SDL-1.2
Hello.
This patch provides basic support for video on the Sony PS3
Linux framebuffer. Scaling, format-conversion, and drawing is
done from the SPEs, so there is little performance impact to
PPE applications. This is by no means production quality code,
but it is a very good start and a good example of how to use the
PS3's hardware capabilities to accelerate video playback on
the box.
The driver has been verified to work with ffplay, mplayer and xine.
This piece of software has been developed at the IBM R&D Lab
in Boeblingen, Germany and is now returned to the community.
Enjoy !
Signed-off-by: D.Herrendoerfer < d.herrendoerfer [at] de [dot] ibm [dot] com >
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 02 Apr 2009 04:06:55 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
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| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_LockAudio</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_MixAudio" | |
| 17 HREF="sdlmixaudio.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_UnlockAudio" | |
| 20 HREF="sdlunlockaudio.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="sdlmixaudio.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="sdlunlockaudio.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="SDLLOCKAUDIO" | |
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74 ></A |
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75 >SDL_LockAudio</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7134" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_LockAudio -- Lock out the callback function</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN7137" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN7138" |
| 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_LockAudio</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="AEN7144" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >The lock manipulated by these functions protects the callback function. | |
| 124 During a LockAudio period, you can be guaranteed that the | |
| 125 callback function is not running. Do not call these from the callback | |
| 126 function or you will cause deadlock.</P | |
| 127 ></DIV | |
| 128 ><DIV | |
| 129 CLASS="REFSECT1" | |
| 130 ><A | |
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131 NAME="AEN7147" |
| 0 | 132 ></A |
| 133 ><H2 | |
| 134 >See Also</H2 | |
| 135 ><P | |
| 136 ><A | |
| 137 HREF="sdlopenaudio.html" | |
| 138 ><TT | |
| 139 CLASS="FUNCTION" | |
| 140 >SDL_OpenAudio</TT | |
| 141 ></A | |
| 142 ></P | |
| 143 ></DIV | |
| 144 ><DIV | |
| 145 CLASS="NAVFOOTER" | |
| 146 ><HR | |
| 147 ALIGN="LEFT" | |
| 148 WIDTH="100%"><TABLE | |
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149 SUMMARY="Footer navigation table" |
| 0 | 150 WIDTH="100%" |
| 151 BORDER="0" | |
| 152 CELLPADDING="0" | |
| 153 CELLSPACING="0" | |
| 154 ><TR | |
| 155 ><TD | |
| 156 WIDTH="33%" | |
| 157 ALIGN="left" | |
| 158 VALIGN="top" | |
| 159 ><A | |
| 160 HREF="sdlmixaudio.html" | |
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161 ACCESSKEY="P" |
| 0 | 162 >Prev</A |
| 163 ></TD | |
| 164 ><TD | |
| 165 WIDTH="34%" | |
| 166 ALIGN="center" | |
| 167 VALIGN="top" | |
| 168 ><A | |
| 169 HREF="index.html" | |
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170 ACCESSKEY="H" |
| 0 | 171 >Home</A |
| 172 ></TD | |
| 173 ><TD | |
| 174 WIDTH="33%" | |
| 175 ALIGN="right" | |
| 176 VALIGN="top" | |
| 177 ><A | |
| 178 HREF="sdlunlockaudio.html" | |
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179 ACCESSKEY="N" |
| 0 | 180 >Next</A |
| 181 ></TD | |
| 182 ></TR | |
| 183 ><TR | |
| 184 ><TD | |
| 185 WIDTH="33%" | |
| 186 ALIGN="left" | |
| 187 VALIGN="top" | |
| 188 >SDL_MixAudio</TD | |
| 189 ><TD | |
| 190 WIDTH="34%" | |
| 191 ALIGN="center" | |
| 192 VALIGN="top" | |
| 193 ><A | |
| 194 HREF="audio.html" | |
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195 ACCESSKEY="U" |
| 0 | 196 >Up</A |
| 197 ></TD | |
| 198 ><TD | |
| 199 WIDTH="33%" | |
| 200 ALIGN="right" | |
| 201 VALIGN="top" | |
| 202 >SDL_UnlockAudio</TD | |
| 203 ></TR | |
| 204 ></TABLE | |
| 205 ></DIV | |
| 206 ></BODY | |
| 207 ></HTML | |
| 208 > |