Mercurial > sdl-ios-xcode
annotate docs/html/sdldisplayyuvoverlay.html @ 914:bbf8dcc8aed6
Date: Wed, 23 Jun 2004 17:05:33 -0400
From: Chris Nelson
Subject: [SDL] [Patch] WiseGroup MP-8800 / MP-8866 (PS2 Joystick)
In the current cvs version, SDL doesn't handle these Playstation2
controller => USB adapters correctly, in linux.
It will always assume that the maximum number of joysticks (2 in the
case of the MP-8866, 4 in the case of the 8800) are plugged in. This is
bad not only because it allows SDL to exaggerate the number of logical
joysticks, but primarily because the joystick axes are mapped
incorrectly, all over the place, such that the devices are effectively
unusable unless you have the maximum number of joysticks plugged in.
My changes to src/joystick/linux/SDL_sysjoystick.c build on another's
previous work (which was a special case for this very joystick,
actually), and fix both of these problems, as well as making the current
code a little more general, to allow for others to more easily drop in
code for quirky joysticks such as these.
I've tested this code under 2.6.7 as well as 2.4.24... Both work as
advertised (provided you load the JOYDEV linux code as a module,
otherwise they won't work at all, new code or old, but that's another
issue entirely).
Though this sounds horribly formal, you have my permission to distribute
all of my work on this issue under the LGPL. So there.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 25 Jul 2004 18:31:50 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_DisplayYUVOverlay</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_UnlockYUVOverlay" | |
17 HREF="sdlunlockyuvoverlay.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_FreeYUVOverlay" | |
20 HREF="sdlfreeyuvoverlay.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="sdlunlockyuvoverlay.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="sdlfreeyuvoverlay.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="SDLDISPLAYYUVOVERLAY" | |
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74 ></A |
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75 >SDL_DisplayYUVOverlay</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2908" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_DisplayYUVOverlay -- Blit the overlay to the display</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2911" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2912" |
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_DisplayYUVOverlay</B | |
108 ></CODE | |
109 >(SDL_Overlay *overlay, SDL_Rect *dstrect);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2918" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Blit the <TT | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >overlay</I | |
127 ></TT | |
128 > to the surface specified when it was <A | |
129 HREF="sdlcreateyuvoverlay.html" | |
130 >created</A | |
131 >. The <A | |
132 HREF="sdlrect.html" | |
133 ><SPAN | |
134 CLASS="STRUCTNAME" | |
135 >SDL_Rect</SPAN | |
136 ></A | |
137 > structure, <TT | |
138 CLASS="PARAMETER" | |
139 ><I | |
140 >dstrect</I | |
141 ></TT | |
142 >, specifies the position and size of the destination. If the <TT | |
143 CLASS="PARAMETER" | |
144 ><I | |
145 >dstrect</I | |
146 ></TT | |
147 > is a larger or smaller than the overlay then the overlay will be scaled, this is optimized for 2x scaling.</P | |
148 ></DIV | |
149 ><DIV | |
150 CLASS="REFSECT1" | |
151 ><A | |
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152 NAME="AEN2927" |
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153 ></A |
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154 ><H2 |
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155 >Return Values</H2 |
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156 ><P |
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157 >Returns 0 on success</P |
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158 ></DIV |
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159 ><DIV |
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160 CLASS="REFSECT1" |
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161 ><A |
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162 NAME="AEN2930" |
0 | 163 ></A |
164 ><H2 | |
165 >See Also</H2 | |
166 ><P | |
167 ><A | |
168 HREF="sdloverlay.html" | |
169 ><SPAN | |
170 CLASS="STRUCTNAME" | |
171 >SDL_Overlay</SPAN | |
172 ></A | |
173 >, | |
174 <A | |
175 HREF="sdlcreateyuvoverlay.html" | |
176 ><TT | |
177 CLASS="FUNCTION" | |
178 >SDL_CreateYUVOverlay</TT | |
179 ></A | |
180 ></P | |
181 ></DIV | |
182 ><DIV | |
183 CLASS="NAVFOOTER" | |
184 ><HR | |
185 ALIGN="LEFT" | |
186 WIDTH="100%"><TABLE | |
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187 SUMMARY="Footer navigation table" |
0 | 188 WIDTH="100%" |
189 BORDER="0" | |
190 CELLPADDING="0" | |
191 CELLSPACING="0" | |
192 ><TR | |
193 ><TD | |
194 WIDTH="33%" | |
195 ALIGN="left" | |
196 VALIGN="top" | |
197 ><A | |
198 HREF="sdlunlockyuvoverlay.html" | |
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199 ACCESSKEY="P" |
0 | 200 >Prev</A |
201 ></TD | |
202 ><TD | |
203 WIDTH="34%" | |
204 ALIGN="center" | |
205 VALIGN="top" | |
206 ><A | |
207 HREF="index.html" | |
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208 ACCESSKEY="H" |
0 | 209 >Home</A |
210 ></TD | |
211 ><TD | |
212 WIDTH="33%" | |
213 ALIGN="right" | |
214 VALIGN="top" | |
215 ><A | |
216 HREF="sdlfreeyuvoverlay.html" | |
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217 ACCESSKEY="N" |
0 | 218 >Next</A |
219 ></TD | |
220 ></TR | |
221 ><TR | |
222 ><TD | |
223 WIDTH="33%" | |
224 ALIGN="left" | |
225 VALIGN="top" | |
226 >SDL_UnlockYUVOverlay</TD | |
227 ><TD | |
228 WIDTH="34%" | |
229 ALIGN="center" | |
230 VALIGN="top" | |
231 ><A | |
232 HREF="video.html" | |
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233 ACCESSKEY="U" |
0 | 234 >Up</A |
235 ></TD | |
236 ><TD | |
237 WIDTH="33%" | |
238 ALIGN="right" | |
239 VALIGN="top" | |
240 >SDL_FreeYUVOverlay</TD | |
241 ></TR | |
242 ></TABLE | |
243 ></DIV | |
244 ></BODY | |
245 ></HTML | |
246 > |