Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickeventstate.html @ 3335:b8d313de8a65
Adam Strzelecki to SDL
Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit.
Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes).
(1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs
(2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space
(3) Copy other planes for planar YUVs in UpdateTexture
(4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code
Waiting for comments,
--
Adam Strzelecki | nanoant.com
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 04 Oct 2009 04:03:37 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickEventState</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="Event Functions." | |
14 HREF="eventfunctions.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_GetAppState" | |
17 HREF="sdlgetappstate.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="Joystick" | |
20 HREF="joystick.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="sdlgetappstate.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="joystick.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="SDLJOYSTICKEVENTSTATE" | |
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74 ></A |
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75 >SDL_JoystickEventState</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN5969" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_JoystickEventState -- Enable/disable joystick event polling</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN5972" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN5973" |
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_JoystickEventState</B | |
108 ></CODE | |
109 >(int state);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN5979" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >This function is used to enable or disable joystick event processing. With joystick event processing disabled you will have to update joystick states with <A | |
124 HREF="sdljoystickupdate.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_JoystickUpdate</TT | |
128 ></A | |
129 > and read the joystick information manually. <TT | |
130 CLASS="PARAMETER" | |
131 ><I | |
132 >state</I | |
133 ></TT | |
134 > is either <TT | |
135 CLASS="LITERAL" | |
136 >SDL_QUERY</TT | |
137 >, <TT | |
138 CLASS="LITERAL" | |
139 >SDL_ENABLE</TT | |
140 > or <TT | |
141 CLASS="LITERAL" | |
142 >SDL_IGNORE</TT | |
143 >.</P | |
144 ><DIV | |
145 CLASS="NOTE" | |
146 ><BLOCKQUOTE | |
147 CLASS="NOTE" | |
148 ><P | |
149 ><B | |
150 >Note: </B | |
151 >Joystick event handling is prefered</P | |
152 ></BLOCKQUOTE | |
153 ></DIV | |
154 ></DIV | |
155 ><DIV | |
156 CLASS="REFSECT1" | |
157 ><A | |
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158 NAME="AEN5990" |
0 | 159 ></A |
160 ><H2 | |
161 >Return Value</H2 | |
162 ><P | |
163 >If <TT | |
164 CLASS="PARAMETER" | |
165 ><I | |
166 >state</I | |
167 ></TT | |
168 > is <TT | |
169 CLASS="LITERAL" | |
170 >SDL_QUERY</TT | |
171 > then the current state is returned, otherwise the new processing <TT | |
172 CLASS="PARAMETER" | |
173 ><I | |
174 >state</I | |
175 ></TT | |
176 > is returned.</P | |
177 ></DIV | |
178 ><DIV | |
179 CLASS="REFSECT1" | |
180 ><A | |
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181 NAME="AEN5996" |
0 | 182 ></A |
183 ><H2 | |
184 >See Also</H2 | |
185 ><P | |
186 ><A | |
187 HREF="joystick.html" | |
188 >SDL Joystick Functions</A | |
189 >, | |
190 <A | |
191 HREF="sdljoystickupdate.html" | |
192 ><TT | |
193 CLASS="FUNCTION" | |
194 >SDL_JoystickUpdate</TT | |
195 ></A | |
196 >, | |
197 <A | |
198 HREF="sdljoyaxisevent.html" | |
199 ><SPAN | |
200 CLASS="STRUCTNAME" | |
201 >SDL_JoyAxisEvent</SPAN | |
202 ></A | |
203 >, | |
204 <A | |
205 HREF="sdljoyballevent.html" | |
206 ><SPAN | |
207 CLASS="STRUCTNAME" | |
208 >SDL_JoyBallEvent</SPAN | |
209 ></A | |
210 >, | |
211 <A | |
212 HREF="sdljoybuttonevent.html" | |
213 ><SPAN | |
214 CLASS="STRUCTNAME" | |
215 >SDL_JoyButtonEvent</SPAN | |
216 ></A | |
217 >, | |
218 <A | |
219 HREF="sdljoyhatevent.html" | |
220 ><SPAN | |
221 CLASS="STRUCTNAME" | |
222 >SDL_JoyHatEvent</SPAN | |
223 ></A | |
224 ></P | |
225 ></DIV | |
226 ><DIV | |
227 CLASS="NAVFOOTER" | |
228 ><HR | |
229 ALIGN="LEFT" | |
230 WIDTH="100%"><TABLE | |
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231 SUMMARY="Footer navigation table" |
0 | 232 WIDTH="100%" |
233 BORDER="0" | |
234 CELLPADDING="0" | |
235 CELLSPACING="0" | |
236 ><TR | |
237 ><TD | |
238 WIDTH="33%" | |
239 ALIGN="left" | |
240 VALIGN="top" | |
241 ><A | |
242 HREF="sdlgetappstate.html" | |
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243 ACCESSKEY="P" |
0 | 244 >Prev</A |
245 ></TD | |
246 ><TD | |
247 WIDTH="34%" | |
248 ALIGN="center" | |
249 VALIGN="top" | |
250 ><A | |
251 HREF="index.html" | |
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252 ACCESSKEY="H" |
0 | 253 >Home</A |
254 ></TD | |
255 ><TD | |
256 WIDTH="33%" | |
257 ALIGN="right" | |
258 VALIGN="top" | |
259 ><A | |
260 HREF="joystick.html" | |
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261 ACCESSKEY="N" |
0 | 262 >Next</A |
263 ></TD | |
264 ></TR | |
265 ><TR | |
266 ><TD | |
267 WIDTH="33%" | |
268 ALIGN="left" | |
269 VALIGN="top" | |
270 >SDL_GetAppState</TD | |
271 ><TD | |
272 WIDTH="34%" | |
273 ALIGN="center" | |
274 VALIGN="top" | |
275 ><A | |
276 HREF="eventfunctions.html" | |
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277 ACCESSKEY="U" |
0 | 278 >Up</A |
279 ></TD | |
280 ><TD | |
281 WIDTH="33%" | |
282 ALIGN="right" | |
283 VALIGN="top" | |
284 >Joystick</TD | |
285 ></TR | |
286 ></TABLE | |
287 ></DIV | |
288 ></BODY | |
289 ></HTML | |
290 > |