Mercurial > sdl-ios-xcode
annotate docs/html/sdlunlockaudio.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_UnlockAudio</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_LockAudio" | |
17 HREF="sdllockaudio.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CloseAudio" | |
20 HREF="sdlcloseaudio.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="sdllockaudio.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="sdlcloseaudio.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="SDLUNLOCKAUDIO" | |
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74 ></A |
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75 >SDL_UnlockAudio</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7156" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_UnlockAudio -- Unlock the callback function</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN7159" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN7160" |
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_UnlockAudio</B | |
108 ></CODE | |
109 >(void);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN7166" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Unlocks a previous <A | |
124 HREF="sdllockaudio.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_LockAudio</TT | |
128 ></A | |
129 > call.</P | |
130 ></DIV | |
131 ><DIV | |
132 CLASS="REFSECT1" | |
133 ><A | |
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134 NAME="AEN7171" |
0 | 135 ></A |
136 ><H2 | |
137 >See Also</H2 | |
138 ><P | |
139 ><A | |
140 HREF="sdlopenaudio.html" | |
141 ><TT | |
142 CLASS="FUNCTION" | |
143 >SDL_OpenAudio</TT | |
144 ></A | |
145 ></P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="NAVFOOTER" | |
149 ><HR | |
150 ALIGN="LEFT" | |
151 WIDTH="100%"><TABLE | |
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152 SUMMARY="Footer navigation table" |
0 | 153 WIDTH="100%" |
154 BORDER="0" | |
155 CELLPADDING="0" | |
156 CELLSPACING="0" | |
157 ><TR | |
158 ><TD | |
159 WIDTH="33%" | |
160 ALIGN="left" | |
161 VALIGN="top" | |
162 ><A | |
163 HREF="sdllockaudio.html" | |
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164 ACCESSKEY="P" |
0 | 165 >Prev</A |
166 ></TD | |
167 ><TD | |
168 WIDTH="34%" | |
169 ALIGN="center" | |
170 VALIGN="top" | |
171 ><A | |
172 HREF="index.html" | |
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173 ACCESSKEY="H" |
0 | 174 >Home</A |
175 ></TD | |
176 ><TD | |
177 WIDTH="33%" | |
178 ALIGN="right" | |
179 VALIGN="top" | |
180 ><A | |
181 HREF="sdlcloseaudio.html" | |
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182 ACCESSKEY="N" |
0 | 183 >Next</A |
184 ></TD | |
185 ></TR | |
186 ><TR | |
187 ><TD | |
188 WIDTH="33%" | |
189 ALIGN="left" | |
190 VALIGN="top" | |
191 >SDL_LockAudio</TD | |
192 ><TD | |
193 WIDTH="34%" | |
194 ALIGN="center" | |
195 VALIGN="top" | |
196 ><A | |
197 HREF="audio.html" | |
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198 ACCESSKEY="U" |
0 | 199 >Up</A |
200 ></TD | |
201 ><TD | |
202 WIDTH="33%" | |
203 ALIGN="right" | |
204 VALIGN="top" | |
205 >SDL_CloseAudio</TD | |
206 ></TR | |
207 ></TABLE | |
208 ></DIV | |
209 ></BODY | |
210 ></HTML | |
211 > |