Mercurial > sdl-ios-xcode
annotate docs/html/sdlunlockyuvoverlay.html @ 1157:baf35853ad54
Date: Mon, 10 Oct 2005 13:09:32 +0300
From: Tommi Kyntola <tommi.kyntola@ray.fi>
To: sdl@libsdl.org
Subject: [SDL] [RFC] get_ticks broken on linux
It uses gettimeofday to calculate the timedifference.
Gettimeofday returns current time which is seldom monotonous.
This breaks SDL timer subsystem. (time callbacks and all that
get borked when the time difference ms is suddenly ~ 2^32)
I posted a message about this earlier but got no response.
Some thoughts on this matter would be appreciated.
(Or even an explanation for the lack of interest.)
A patch below would use the posix timers that have been around
since posix 93 and do provide a good source of monotonous time
on linux boxes (and on few others too).
The following patch is also availabe at:
http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch
It's against 1.2.9, but I can easily rediffit against
the cvs branch is needed.
cheers,
Tommi Kyntola tommi.kyntola@ray.fi
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Tue, 11 Oct 2005 18:16:12 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_UnlockYUVOverlay</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_LockYUVOverlay" | |
17 HREF="sdllockyuvoverlay.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_DisplayYUVOverlay" | |
20 HREF="sdldisplayyuvoverlay.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="sdllockyuvoverlay.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="sdldisplayyuvoverlay.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="SDLUNLOCKYUVOVERLAY" | |
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74 ></A |
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75 >SDL_UnlockYUVOverlay</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2880" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_UnlockYUVOverlay -- Unlock an overlay</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2883" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2884" |
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_UnlockYUVOverlay</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="AEN2890" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >The opposite to <A | |
124 HREF="sdllockyuvoverlay.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_LockYUVOverlay</TT | |
128 ></A | |
129 >. Unlocks a previously locked overlay. An overlay must be unlocked before it can be displayed.</P | |
130 ></DIV | |
131 ><DIV | |
132 CLASS="REFSECT1" | |
133 ><A | |
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134 NAME="AEN2895" |
0 | 135 ></A |
136 ><H2 | |
137 >See Also</H2 | |
138 ><P | |
139 ><A | |
140 HREF="sdllockyuvoverlay.html" | |
141 ><TT | |
142 CLASS="FUNCTION" | |
143 >SDL_UnlockYUVOverlay</TT | |
144 ></A | |
145 >, | |
146 <A | |
147 HREF="sdlcreateyuvoverlay.html" | |
148 ><TT | |
149 CLASS="FUNCTION" | |
150 >SDL_CreateYUVOverlay</TT | |
151 ></A | |
152 >, | |
153 <A | |
154 HREF="sdloverlay.html" | |
155 ><SPAN | |
156 CLASS="STRUCTNAME" | |
157 >SDL_Overlay</SPAN | |
158 ></A | |
159 ></P | |
160 ></DIV | |
161 ><DIV | |
162 CLASS="NAVFOOTER" | |
163 ><HR | |
164 ALIGN="LEFT" | |
165 WIDTH="100%"><TABLE | |
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166 SUMMARY="Footer navigation table" |
0 | 167 WIDTH="100%" |
168 BORDER="0" | |
169 CELLPADDING="0" | |
170 CELLSPACING="0" | |
171 ><TR | |
172 ><TD | |
173 WIDTH="33%" | |
174 ALIGN="left" | |
175 VALIGN="top" | |
176 ><A | |
177 HREF="sdllockyuvoverlay.html" | |
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178 ACCESSKEY="P" |
0 | 179 >Prev</A |
180 ></TD | |
181 ><TD | |
182 WIDTH="34%" | |
183 ALIGN="center" | |
184 VALIGN="top" | |
185 ><A | |
186 HREF="index.html" | |
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187 ACCESSKEY="H" |
0 | 188 >Home</A |
189 ></TD | |
190 ><TD | |
191 WIDTH="33%" | |
192 ALIGN="right" | |
193 VALIGN="top" | |
194 ><A | |
195 HREF="sdldisplayyuvoverlay.html" | |
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196 ACCESSKEY="N" |
0 | 197 >Next</A |
198 ></TD | |
199 ></TR | |
200 ><TR | |
201 ><TD | |
202 WIDTH="33%" | |
203 ALIGN="left" | |
204 VALIGN="top" | |
205 >SDL_LockYUVOverlay</TD | |
206 ><TD | |
207 WIDTH="34%" | |
208 ALIGN="center" | |
209 VALIGN="top" | |
210 ><A | |
211 HREF="video.html" | |
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212 ACCESSKEY="U" |
0 | 213 >Up</A |
214 ></TD | |
215 ><TD | |
216 WIDTH="33%" | |
217 ALIGN="right" | |
218 VALIGN="top" | |
219 >SDL_DisplayYUVOverlay</TD | |
220 ></TR | |
221 ></TABLE | |
222 ></DIV | |
223 ></BODY | |
224 ></HTML | |
225 > |