Mercurial > sdl-ios-xcode
annotate docs/html/sdlwmseticon.html @ 765:4c2ba6161939
Editors Note: The original patch was modified to use SDL_Delay() instead of
nanosleep because nanosleep may not be portable to all systems
using SDL with the ALSA backend. This may be a moot point with
the switch to blocking writes anyway...
Date: Sat, 27 Dec 2003 21:47:36 +0100
From: Michel Daenzer
To: Debian Bug Tracking System
Subject: [SDL] Bug#225252: [PATCH] ALSA fixes
Package: libsdl1.2debian-all
Version: 1.2.6-2
Severity: normal
Tags: patch
For SDL 1.2.6, the ALSA backend was changed to call snd_pcm_open() with
SND_PCM_NONBLOCK. That's a good idea per se, however, it causes high CPU
usage, interrupted sound and stuttering in some games here. Taking a nanosleep
whenever snd_pcm_writei() returns -EAGAIN fixes this, but I think it's more
efficient to use blocking mode for the actual sound playback. Feedback from the
SDL and ALSA lists appreciated.
The patch also fixes the default ALSA device to be used.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 04 Jan 2004 15:40:50 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_WM_SetIcon</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="Window Management" | |
| 14 HREF="wm.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_WM_GetCaption" | |
| 17 HREF="sdlwmgetcaption.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_WM_IconifyWindow" | |
| 20 HREF="sdlwmiconifywindow.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="sdlwmgetcaption.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="sdlwmiconifywindow.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="SDLWMSETICON" | |
| 71 >SDL_WM_SetIcon</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN3198" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_WM_SetIcon -- Sets the icon for the display window.</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
|
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84 NAME="AEN3201" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
|
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91 NAME="AEN3202" |
| 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 >void <B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_WM_SetIcon</B | |
| 105 ></CODE | |
| 106 >(SDL_Surface *icon, Uint8 *mask);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
|
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115 NAME="AEN3208" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
|
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120 >Sets the icon for the display window. Win32 icons must be 32x32.</P |
| 0 | 121 ><P |
| 122 >This function must be called before the first call to | |
| 123 <A | |
| 124 HREF="sdlsetvideomode.html" | |
| 125 >SDL_SetVideoMode</A | |
| 126 >.</P | |
| 127 ><P | |
| 128 >It takes an <TT | |
| 129 CLASS="PARAMETER" | |
| 130 ><I | |
| 131 >icon</I | |
| 132 ></TT | |
| 133 > surface, and a <TT | |
| 134 CLASS="PARAMETER" | |
| 135 ><I | |
| 136 >mask</I | |
| 137 ></TT | |
| 138 > in MSB format.</P | |
| 139 ><P | |
| 140 >If <TT | |
| 141 CLASS="PARAMETER" | |
| 142 ><I | |
| 143 >mask</I | |
| 144 ></TT | |
| 145 > is <TT | |
| 146 CLASS="LITERAL" | |
| 147 >NULL</TT | |
| 148 >, the entire | |
| 149 icon surface will be used as the icon.</P | |
| 150 ></DIV | |
| 151 ><DIV | |
| 152 CLASS="REFSECT1" | |
| 153 ><A | |
|
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154 NAME="AEN3219" |
| 0 | 155 ></A |
| 156 ><H2 | |
| 157 >Example</H2 | |
| 158 ><PRE | |
| 159 CLASS="PROGRAMLISTING" | |
| 160 >SDL_WM_SetIcon(SDL_LoadBMP("icon.bmp"), NULL);</PRE | |
| 161 ></DIV | |
| 162 ><DIV | |
| 163 CLASS="REFSECT1" | |
| 164 ><A | |
|
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165 NAME="AEN3222" |
| 0 | 166 ></A |
| 167 ><H2 | |
| 168 >See Also</H2 | |
| 169 ><P | |
| 170 ><A | |
| 171 HREF="sdlsetvideomode.html" | |
| 172 ><TT | |
| 173 CLASS="FUNCTION" | |
| 174 >SDL_SetVideoMode</TT | |
| 175 ></A | |
| 176 >, | |
| 177 <A | |
| 178 HREF="sdlwmsetcaption.html" | |
| 179 ><TT | |
| 180 CLASS="FUNCTION" | |
| 181 >SDL_WM_SetCaption</TT | |
| 182 ></A | |
| 183 ></P | |
| 184 ></DIV | |
| 185 ><DIV | |
| 186 CLASS="NAVFOOTER" | |
| 187 ><HR | |
| 188 ALIGN="LEFT" | |
| 189 WIDTH="100%"><TABLE | |
| 190 WIDTH="100%" | |
| 191 BORDER="0" | |
| 192 CELLPADDING="0" | |
| 193 CELLSPACING="0" | |
| 194 ><TR | |
| 195 ><TD | |
| 196 WIDTH="33%" | |
| 197 ALIGN="left" | |
| 198 VALIGN="top" | |
| 199 ><A | |
| 200 HREF="sdlwmgetcaption.html" | |
| 201 >Prev</A | |
| 202 ></TD | |
| 203 ><TD | |
| 204 WIDTH="34%" | |
| 205 ALIGN="center" | |
| 206 VALIGN="top" | |
| 207 ><A | |
| 208 HREF="index.html" | |
| 209 >Home</A | |
| 210 ></TD | |
| 211 ><TD | |
| 212 WIDTH="33%" | |
| 213 ALIGN="right" | |
| 214 VALIGN="top" | |
| 215 ><A | |
| 216 HREF="sdlwmiconifywindow.html" | |
| 217 >Next</A | |
| 218 ></TD | |
| 219 ></TR | |
| 220 ><TR | |
| 221 ><TD | |
| 222 WIDTH="33%" | |
| 223 ALIGN="left" | |
| 224 VALIGN="top" | |
| 225 >SDL_WM_GetCaption</TD | |
| 226 ><TD | |
| 227 WIDTH="34%" | |
| 228 ALIGN="center" | |
| 229 VALIGN="top" | |
| 230 ><A | |
| 231 HREF="wm.html" | |
| 232 >Up</A | |
| 233 ></TD | |
| 234 ><TD | |
| 235 WIDTH="33%" | |
| 236 ALIGN="right" | |
| 237 VALIGN="top" | |
| 238 >SDL_WM_IconifyWindow</TD | |
| 239 ></TR | |
| 240 ></TABLE | |
| 241 ></DIV | |
| 242 ></BODY | |
| 243 ></HTML | |
| 244 > |