Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickopened.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> |
---|---|
date | Sun, 04 Oct 2009 04:03:37 +0000 |
parents | 355632dca928 |
children |
rev | line source |
---|---|
0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickOpened</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="Joystick" | |
14 HREF="joystick.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_JoystickOpen" | |
17 HREF="sdljoystickopen.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_JoystickIndex" | |
20 HREF="sdljoystickindex.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 | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdljoystickopen.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdljoystickindex.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="SDLJOYSTICKOPENED" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_JoystickOpened</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN6128" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_JoystickOpened -- Determine if a joystick has been opened</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN6131" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
94 NAME="AEN6132" |
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_JoystickOpened</B | |
108 ></CODE | |
109 >(int index);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
118 NAME="AEN6138" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Determines whether a joystick has already been opened within the application. <TT | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >index</I | |
127 ></TT | |
128 > refers to the N'th joystick on the system.</P | |
129 ></DIV | |
130 ><DIV | |
131 CLASS="REFSECT1" | |
132 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
133 NAME="AEN6142" |
0 | 134 ></A |
135 ><H2 | |
136 >Return Value</H2 | |
137 ><P | |
138 >Returns <SPAN | |
139 CLASS="RETURNVALUE" | |
140 >1</SPAN | |
141 > if the joystick has been opened, or <SPAN | |
142 CLASS="RETURNVALUE" | |
143 >0</SPAN | |
144 > if it has not.</P | |
145 ></DIV | |
146 ><DIV | |
147 CLASS="REFSECT1" | |
148 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
149 NAME="AEN6147" |
0 | 150 ></A |
151 ><H2 | |
152 >See Also</H2 | |
153 ><P | |
154 ><A | |
155 HREF="sdljoystickopen.html" | |
156 ><TT | |
157 CLASS="FUNCTION" | |
158 >SDL_JoystickOpen</TT | |
159 ></A | |
160 >, | |
161 <A | |
162 HREF="sdljoystickclose.html" | |
163 ><TT | |
164 CLASS="FUNCTION" | |
165 >SDL_JoystickClose</TT | |
166 ></A | |
167 ></P | |
168 ></DIV | |
169 ><DIV | |
170 CLASS="NAVFOOTER" | |
171 ><HR | |
172 ALIGN="LEFT" | |
173 WIDTH="100%"><TABLE | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
174 SUMMARY="Footer navigation table" |
0 | 175 WIDTH="100%" |
176 BORDER="0" | |
177 CELLPADDING="0" | |
178 CELLSPACING="0" | |
179 ><TR | |
180 ><TD | |
181 WIDTH="33%" | |
182 ALIGN="left" | |
183 VALIGN="top" | |
184 ><A | |
185 HREF="sdljoystickopen.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
186 ACCESSKEY="P" |
0 | 187 >Prev</A |
188 ></TD | |
189 ><TD | |
190 WIDTH="34%" | |
191 ALIGN="center" | |
192 VALIGN="top" | |
193 ><A | |
194 HREF="index.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
195 ACCESSKEY="H" |
0 | 196 >Home</A |
197 ></TD | |
198 ><TD | |
199 WIDTH="33%" | |
200 ALIGN="right" | |
201 VALIGN="top" | |
202 ><A | |
203 HREF="sdljoystickindex.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
204 ACCESSKEY="N" |
0 | 205 >Next</A |
206 ></TD | |
207 ></TR | |
208 ><TR | |
209 ><TD | |
210 WIDTH="33%" | |
211 ALIGN="left" | |
212 VALIGN="top" | |
213 >SDL_JoystickOpen</TD | |
214 ><TD | |
215 WIDTH="34%" | |
216 ALIGN="center" | |
217 VALIGN="top" | |
218 ><A | |
219 HREF="joystick.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
220 ACCESSKEY="U" |
0 | 221 >Up</A |
222 ></TD | |
223 ><TD | |
224 WIDTH="33%" | |
225 ALIGN="right" | |
226 VALIGN="top" | |
227 >SDL_JoystickIndex</TD | |
228 ></TR | |
229 ></TABLE | |
230 ></DIV | |
231 ></BODY | |
232 ></HTML | |
233 > |