Mercurial > sdl-ios-xcode
annotate docs/html/sdllockyuvoverlay.html @ 896:b56dc586a5ef
Date: Tue, 16 Mar 2004 12:40:33 +0000
From: Alan Swanson
Subject: [SDL] [PATCH] Linux joystick evdev axis count fix
The event device configuration under Linux does not check the returned
ioctl value when reading the axis information. This means extra
undefined axes are returned.
Note, in EV_HandleEvents, the default for case EV_ABS is to return any
axis information which is fine as we have already checked for all valid
absolute axes. No new axes should be returned after opening the device.
(Unless, of course, the evdev allows closing and reassigning a new
device while in use and I can't believe that happens.)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 16 May 2004 22:48:06 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_LockYUVOverlay</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="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_CreateYUVOverlay" | |
17 HREF="sdlcreateyuvoverlay.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_UnlockYUVOverlay" | |
20 HREF="sdlunlockyuvoverlay.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="sdlcreateyuvoverlay.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="sdlunlockyuvoverlay.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="SDLLOCKYUVOVERLAY" | |
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74 ></A |
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75 >SDL_LockYUVOverlay</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2844" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_LockYUVOverlay -- Lock an overlay</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2847" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2848" |
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 >int <B | |
106 CLASS="FSFUNC" | |
107 >SDL_LockYUVOverlay</B | |
108 ></CODE | |
109 >(SDL_Overlay *overlay);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2854" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Much the same as <A | |
124 HREF="sdllocksurface.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_LockSurface</TT | |
128 ></A | |
129 >, <TT | |
130 CLASS="FUNCTION" | |
131 >SDL_LockYUVOverlay</TT | |
132 > locks the <A | |
133 HREF="sdloverlay.html" | |
134 ><TT | |
135 CLASS="PARAMETER" | |
136 ><I | |
137 >overlay</I | |
138 ></TT | |
139 ></A | |
140 > for direct access to pixel data.</P | |
141 ></DIV | |
142 ><DIV | |
143 CLASS="REFSECT1" | |
144 ><A | |
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145 NAME="AEN2862" |
0 | 146 ></A |
147 ><H2 | |
148 >Return Value</H2 | |
149 ><P | |
150 >Returns <SPAN | |
151 CLASS="RETURNVALUE" | |
152 >0</SPAN | |
153 > on success, or <SPAN | |
154 CLASS="RETURNVALUE" | |
155 >-1</SPAN | |
156 > on an error.</P | |
157 ></DIV | |
158 ><DIV | |
159 CLASS="REFSECT1" | |
160 ><A | |
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161 NAME="AEN2867" |
0 | 162 ></A |
163 ><H2 | |
164 >See Also</H2 | |
165 ><P | |
166 ><A | |
167 HREF="sdlunlockyuvoverlay.html" | |
168 ><TT | |
169 CLASS="FUNCTION" | |
170 >SDL_UnlockYUVOverlay</TT | |
171 ></A | |
172 >, | |
173 <A | |
174 HREF="sdlcreateyuvoverlay.html" | |
175 ><TT | |
176 CLASS="FUNCTION" | |
177 >SDL_CreateYUVOverlay</TT | |
178 ></A | |
179 >, | |
180 <A | |
181 HREF="sdloverlay.html" | |
182 ><SPAN | |
183 CLASS="STRUCTNAME" | |
184 >SDL_Overlay</SPAN | |
185 ></A | |
186 ></P | |
187 ></DIV | |
188 ><DIV | |
189 CLASS="NAVFOOTER" | |
190 ><HR | |
191 ALIGN="LEFT" | |
192 WIDTH="100%"><TABLE | |
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193 SUMMARY="Footer navigation table" |
0 | 194 WIDTH="100%" |
195 BORDER="0" | |
196 CELLPADDING="0" | |
197 CELLSPACING="0" | |
198 ><TR | |
199 ><TD | |
200 WIDTH="33%" | |
201 ALIGN="left" | |
202 VALIGN="top" | |
203 ><A | |
204 HREF="sdlcreateyuvoverlay.html" | |
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205 ACCESSKEY="P" |
0 | 206 >Prev</A |
207 ></TD | |
208 ><TD | |
209 WIDTH="34%" | |
210 ALIGN="center" | |
211 VALIGN="top" | |
212 ><A | |
213 HREF="index.html" | |
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214 ACCESSKEY="H" |
0 | 215 >Home</A |
216 ></TD | |
217 ><TD | |
218 WIDTH="33%" | |
219 ALIGN="right" | |
220 VALIGN="top" | |
221 ><A | |
222 HREF="sdlunlockyuvoverlay.html" | |
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223 ACCESSKEY="N" |
0 | 224 >Next</A |
225 ></TD | |
226 ></TR | |
227 ><TR | |
228 ><TD | |
229 WIDTH="33%" | |
230 ALIGN="left" | |
231 VALIGN="top" | |
232 >SDL_CreateYUVOverlay</TD | |
233 ><TD | |
234 WIDTH="34%" | |
235 ALIGN="center" | |
236 VALIGN="top" | |
237 ><A | |
238 HREF="video.html" | |
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239 ACCESSKEY="U" |
0 | 240 >Up</A |
241 ></TD | |
242 ><TD | |
243 WIDTH="33%" | |
244 ALIGN="right" | |
245 VALIGN="top" | |
246 >SDL_UnlockYUVOverlay</TD | |
247 ></TR | |
248 ></TABLE | |
249 ></DIV | |
250 ></BODY | |
251 ></HTML | |
252 > |