Mercurial > sdl-ios-xcode
annotate docs/html/sdlpauseaudio.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 |
children |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_PauseAudio</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_OpenAudio" | |
17 HREF="sdlopenaudio.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GetAudioStatus" | |
20 HREF="sdlgetaudiostatus.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="sdlopenaudio.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="sdlgetaudiostatus.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="SDLPAUSEAUDIO" | |
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74 ></A |
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75 >SDL_PauseAudio</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN6765" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_PauseAudio -- Pauses and unpauses the audio callback processing</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN6768" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN6769" |
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 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_PauseAudio</B | |
108 ></CODE | |
109 >(int pause_on);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN6775" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >This function pauses and unpauses the audio callback processing. | |
124 It should be called with <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >pause_on</I | |
128 ></TT | |
129 >=0 after opening the audio | |
130 device to start playing sound. This is so you can safely initialize | |
131 data for your callback function after opening the audio device. | |
132 Silence will be written to the audio device during the pause.</P | |
133 ></DIV | |
134 ><DIV | |
135 CLASS="REFSECT1" | |
136 ><A | |
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137 NAME="AEN6779" |
0 | 138 ></A |
139 ><H2 | |
140 >See Also</H2 | |
141 ><P | |
142 ><A | |
143 HREF="sdlgetaudiostatus.html" | |
144 ><TT | |
145 CLASS="FUNCTION" | |
146 >SDL_GetAudioStatus</TT | |
147 ></A | |
148 >, | |
149 <A | |
150 HREF="sdlopenaudio.html" | |
151 ><TT | |
152 CLASS="FUNCTION" | |
153 >SDL_OpenAudio</TT | |
154 ></A | |
155 ></P | |
156 ></DIV | |
157 ><DIV | |
158 CLASS="NAVFOOTER" | |
159 ><HR | |
160 ALIGN="LEFT" | |
161 WIDTH="100%"><TABLE | |
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162 SUMMARY="Footer navigation table" |
0 | 163 WIDTH="100%" |
164 BORDER="0" | |
165 CELLPADDING="0" | |
166 CELLSPACING="0" | |
167 ><TR | |
168 ><TD | |
169 WIDTH="33%" | |
170 ALIGN="left" | |
171 VALIGN="top" | |
172 ><A | |
173 HREF="sdlopenaudio.html" | |
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174 ACCESSKEY="P" |
0 | 175 >Prev</A |
176 ></TD | |
177 ><TD | |
178 WIDTH="34%" | |
179 ALIGN="center" | |
180 VALIGN="top" | |
181 ><A | |
182 HREF="index.html" | |
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183 ACCESSKEY="H" |
0 | 184 >Home</A |
185 ></TD | |
186 ><TD | |
187 WIDTH="33%" | |
188 ALIGN="right" | |
189 VALIGN="top" | |
190 ><A | |
191 HREF="sdlgetaudiostatus.html" | |
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192 ACCESSKEY="N" |
0 | 193 >Next</A |
194 ></TD | |
195 ></TR | |
196 ><TR | |
197 ><TD | |
198 WIDTH="33%" | |
199 ALIGN="left" | |
200 VALIGN="top" | |
201 >SDL_OpenAudio</TD | |
202 ><TD | |
203 WIDTH="34%" | |
204 ALIGN="center" | |
205 VALIGN="top" | |
206 ><A | |
207 HREF="audio.html" | |
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208 ACCESSKEY="U" |
0 | 209 >Up</A |
210 ></TD | |
211 ><TD | |
212 WIDTH="33%" | |
213 ALIGN="right" | |
214 VALIGN="top" | |
215 >SDL_GetAudioStatus</TD | |
216 ></TR | |
217 ></TABLE | |
218 ></DIV | |
219 ></BODY | |
220 ></HTML | |
221 > |