Mercurial > sdl-ios-xcode
annotate docs/html/sdlbuildaudiocvt.html @ 983:7f08bd66f1ca
Date: Fri, 19 Nov 2004 06:23:53 -0800 (PST)
From: Eric Wing
Subject: OS X Mouse inversion problem fix (again)
Here's yet another patch for the OS X mouse inversion
problem. This should fix the problem once and for all.
I know I've said this before, but *This time for
sure!* :)
If you recall, my last patch broke the non-OpenGL
windowed code and caused the inversion to occur there
instead. Max submitted a patch that partially reverted
the changes back which included the os version hack
which is currently the most recent CVS.
Aaron Sullivan identified and reported to the mailing
list the other day, that the last partial regression
of the code broke OS X 10.2. Looking over the results,
I'm thinking that I was slightly more successful than
I thought at unifying the code. I think I was trying
to unify the code base for OpenGL and non-OpenGL
windowed modes for all versions of the OS. It looks
like I failed at at unifying the OpenGL and non-OpenGL
code, but I did succeed at unifying the OS versions.
Thus, we no longer need the hack for the OS version
checks. The partial regression still included an OS
check which is what broke things for < 10.3.
Attached is the patch for SDL_QuartzWM.m. It basically
is a half-line change that removes one of the two
checks that decides if the mouse coordinates need to
be inverted, i.e:
if (system_version >= 0x1030 &&
(SDL_VideoSurface->flags & SDL_OPENGL) )
becomes this:
if(SDL_VideoSurface->flags & SDL_OPENGL)
With Aaron's outstanding help, we have collectively
tested:
windowed OpenGL
windowed non-OpenGL
fullscreen OpenGL
fullscreen non-OpenGL
under OS X 10.2 (Jaguar), 10.3 (Panther), and 10.4
(Tiger).
We don't have access to 10.0 or 10.1, but since the
original problem didn't materialize until 10.3, I'm
hopeful that testing 10.2 is sufficient. And now that
the code is uniform, I'm also hoping we'll be safe
moving forward to deal with future revisions of the OS
with this issue.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_BuildAudioCVT</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="Audio" | |
14 HREF="audio.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_AudioCVT" | |
17 HREF="sdlaudiocvt.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_ConvertAudio" | |
20 HREF="sdlconvertaudio.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="sdlaudiocvt.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="sdlconvertaudio.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="SDLBUILDAUDIOCVT" | |
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74 ></A |
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75 >SDL_BuildAudioCVT</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7002" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_BuildAudioCVT -- Initializes a SDL_AudioCVT structure for conversion</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN7005" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN7006" |
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_BuildAudioCVT</B | |
108 ></CODE | |
109 >(SDL_AudioCVT *cvt, Uint16 src_format, Uint8 src_channels, int src_rate, Uint16 dst_format, Uint8 dst_channels, int dst_rate);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN7012" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Before an <A | |
124 HREF="sdlaudiocvt.html" | |
125 ><SPAN | |
126 CLASS="STRUCTNAME" | |
127 >SDL_AudioCVT</SPAN | |
128 ></A | |
129 > structure can be used to convert audio data it must be initialized with source and destination information. </P | |
130 ><P | |
131 ><TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >src_format</I | |
135 ></TT | |
136 > and <TT | |
137 CLASS="PARAMETER" | |
138 ><I | |
139 >dst_format</I | |
140 ></TT | |
141 > are the source and destination format of the conversion. (For information on audio formats see <A | |
142 HREF="sdlaudiospec.html" | |
143 ><SPAN | |
144 CLASS="STRUCTNAME" | |
145 > SDL_AudioSpec</SPAN | |
146 ></A | |
147 >). <TT | |
148 CLASS="PARAMETER" | |
149 ><I | |
150 >src_channels</I | |
151 ></TT | |
152 > and <TT | |
153 CLASS="PARAMETER" | |
154 ><I | |
155 >dst_channels</I | |
156 ></TT | |
157 > are the number of channels in the source and destination formats. Finally, <TT | |
158 CLASS="PARAMETER" | |
159 ><I | |
160 >src_rate</I | |
161 ></TT | |
162 > and <TT | |
163 CLASS="PARAMETER" | |
164 ><I | |
165 >dst_rate</I | |
166 ></TT | |
167 > are the frequency or samples-per-second of the source and destination formats. Once again, see <A | |
168 HREF="sdlaudiospec.html" | |
169 ><SPAN | |
170 CLASS="STRUCTNAME" | |
171 >SDL_AudioSpec</SPAN | |
172 ></A | |
173 >.</P | |
174 ></DIV | |
175 ><DIV | |
176 CLASS="REFSECT1" | |
177 ><A | |
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178 NAME="AEN7028" |
0 | 179 ></A |
180 ><H2 | |
181 >Return Values</H2 | |
182 ><P | |
183 >Returns <SPAN | |
184 CLASS="RETURNVALUE" | |
185 >-1</SPAN | |
186 > if the filter could not be built or 1 if it could.</P | |
187 ></DIV | |
188 ><DIV | |
189 CLASS="REFSECT1" | |
190 ><A | |
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191 NAME="AEN7032" |
0 | 192 ></A |
193 ><H2 | |
194 >Examples</H2 | |
195 ><P | |
196 >See <A | |
197 HREF="sdlconvertaudio.html" | |
198 ><TT | |
199 CLASS="FUNCTION" | |
200 >SDL_ConvertAudio</TT | |
201 ></A | |
202 >.</P | |
203 ></DIV | |
204 ><DIV | |
205 CLASS="REFSECT1" | |
206 ><A | |
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207 NAME="AEN7037" |
0 | 208 ></A |
209 ><H2 | |
210 >See Also</H2 | |
211 ><P | |
212 ><A | |
213 HREF="sdlconvertaudio.html" | |
214 ><TT | |
215 CLASS="FUNCTION" | |
216 >SDL_ConvertAudio</TT | |
217 ></A | |
218 >, | |
219 <A | |
220 HREF="sdlaudiocvt.html" | |
221 ><TT | |
222 CLASS="FUNCTION" | |
223 >SDL_AudioCVT</TT | |
224 ></A | |
225 ></P | |
226 ></DIV | |
227 ><DIV | |
228 CLASS="NAVFOOTER" | |
229 ><HR | |
230 ALIGN="LEFT" | |
231 WIDTH="100%"><TABLE | |
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232 SUMMARY="Footer navigation table" |
0 | 233 WIDTH="100%" |
234 BORDER="0" | |
235 CELLPADDING="0" | |
236 CELLSPACING="0" | |
237 ><TR | |
238 ><TD | |
239 WIDTH="33%" | |
240 ALIGN="left" | |
241 VALIGN="top" | |
242 ><A | |
243 HREF="sdlaudiocvt.html" | |
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244 ACCESSKEY="P" |
0 | 245 >Prev</A |
246 ></TD | |
247 ><TD | |
248 WIDTH="34%" | |
249 ALIGN="center" | |
250 VALIGN="top" | |
251 ><A | |
252 HREF="index.html" | |
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253 ACCESSKEY="H" |
0 | 254 >Home</A |
255 ></TD | |
256 ><TD | |
257 WIDTH="33%" | |
258 ALIGN="right" | |
259 VALIGN="top" | |
260 ><A | |
261 HREF="sdlconvertaudio.html" | |
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262 ACCESSKEY="N" |
0 | 263 >Next</A |
264 ></TD | |
265 ></TR | |
266 ><TR | |
267 ><TD | |
268 WIDTH="33%" | |
269 ALIGN="left" | |
270 VALIGN="top" | |
271 >SDL_AudioCVT</TD | |
272 ><TD | |
273 WIDTH="34%" | |
274 ALIGN="center" | |
275 VALIGN="top" | |
276 ><A | |
277 HREF="audio.html" | |
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278 ACCESSKEY="U" |
0 | 279 >Up</A |
280 ></TD | |
281 ><TD | |
282 WIDTH="33%" | |
283 ALIGN="right" | |
284 VALIGN="top" | |
285 >SDL_ConvertAudio</TD | |
286 ></TR | |
287 ></TABLE | |
288 ></DIV | |
289 ></BODY | |
290 ></HTML | |
291 > |