Mercurial > sdl-ios-xcode
annotate docs/html/sdlbuildaudiocvt.html @ 4106:12bb6311fd5d SDL-1.2
Hans de Goede fixed bug #495
When running boswars: http://www.boswars.org/ on a machine with intel
integrathed graphics it crashes when it tries to play the initial theora
splashscreen video:
X Error of failed request: BadAlloc (insufficient resources for operation)
Major opcode of failed request: 140 (XVideo)
Minor opcode of failed request: 19 ()
Serial number of failed request: 25
Current serial number in output stream: 26
boswars: xcb_xlib.c:41: xcb_xlib_lock: Assertion `!c->xlib.lock' failed.
Aborted
I recognized this problem from a few years back, when I encountered it while
working on the Xv blitter for xmame. The problem is that for some reason
creation the Xvport and XvImage succeeds, and failure (lack of resources / hw
capability?) is only indicated during the first XvPut[Shm]Image. I've written a
patch for SDL using the work around for this I developed for xmame (and which
is still used successfully in xmame after many years of usage).
I'll admit it isn't very pretty, but after investigating several possibilities
this was the best option, any other fixes would need changes to the SDL api and
abi.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 29 Dec 2007 02:23:48 +0000 |
parents | 355632dca928 |
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rev | line source |
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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 > |