Mercurial > sdl-ios-xcode
annotate docs/html/reference.html @ 2042:3908e1f808e1
Fixed bug #292
I might be on crack here.
It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and
right channels of a stereo stream together, and clamps the new mono channel if
it would overflow.
Shouldn't it be dividing by 2 to average the two sample points instead of
clamping? Otherwise the mono sample point's volume doubles in the conversion.
This would also make the conversion faster, as it replaces two branches per
sample frame with a bitwise shift.
--ryan.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 24 Sep 2006 15:56:36 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL Reference</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="PREVIOUS" | |
| 13 TITLE="Time Examples" | |
| 14 HREF="guidetimeexamples.html"><LINK | |
| 15 REL="NEXT" | |
| 16 TITLE="General" | |
| 17 HREF="general.html"></HEAD | |
| 18 ><BODY | |
| 19 CLASS="PART" | |
| 20 BGCOLOR="#FFF8DC" | |
| 21 TEXT="#000000" | |
| 22 LINK="#0000ee" | |
| 23 VLINK="#551a8b" | |
| 24 ALINK="#ff0000" | |
| 25 ><DIV | |
| 26 CLASS="NAVHEADER" | |
| 27 ><TABLE | |
|
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diff
changeset
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28 SUMMARY="Header navigation table" |
| 0 | 29 WIDTH="100%" |
| 30 BORDER="0" | |
| 31 CELLPADDING="0" | |
| 32 CELLSPACING="0" | |
| 33 ><TR | |
| 34 ><TH | |
| 35 COLSPAN="3" | |
| 36 ALIGN="center" | |
| 37 >SDL Library Documentation</TH | |
| 38 ></TR | |
| 39 ><TR | |
| 40 ><TD | |
| 41 WIDTH="10%" | |
| 42 ALIGN="left" | |
| 43 VALIGN="bottom" | |
| 44 ><A | |
| 45 HREF="guidetimeexamples.html" | |
|
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355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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46 ACCESSKEY="P" |
| 0 | 47 >Prev</A |
| 48 ></TD | |
| 49 ><TD | |
| 50 WIDTH="80%" | |
| 51 ALIGN="center" | |
| 52 VALIGN="bottom" | |
| 53 ></TD | |
| 54 ><TD | |
| 55 WIDTH="10%" | |
| 56 ALIGN="right" | |
| 57 VALIGN="bottom" | |
| 58 ><A | |
| 59 HREF="general.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
60 ACCESSKEY="N" |
| 0 | 61 >Next</A |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><DIV | |
| 69 CLASS="PART" | |
| 70 ><A | |
| 71 NAME="REFERENCE" | |
| 72 ></A | |
| 73 ><DIV | |
| 74 CLASS="TITLEPAGE" | |
| 75 ><H1 | |
| 76 CLASS="TITLE" | |
| 77 >II. SDL Reference</H1 | |
| 78 ><DIV | |
| 79 CLASS="TOC" | |
| 80 ><DL | |
| 81 ><DT | |
| 82 ><B | |
| 83 >Table of Contents</B | |
| 84 ></DT | |
| 85 ><DT | |
| 86 >5. <A | |
| 87 HREF="general.html" | |
| 88 >General</A | |
| 89 ></DT | |
| 90 ><DT | |
| 91 >6. <A | |
| 92 HREF="video.html" | |
| 93 >Video</A | |
| 94 ></DT | |
| 95 ><DT | |
| 96 >7. <A | |
| 97 HREF="wm.html" | |
| 98 >Window Management</A | |
| 99 ></DT | |
| 100 ><DT | |
| 101 >8. <A | |
| 102 HREF="event.html" | |
| 103 >Events</A | |
| 104 ></DT | |
| 105 ><DT | |
| 106 >9. <A | |
| 107 HREF="joystick.html" | |
| 108 >Joystick</A | |
| 109 ></DT | |
| 110 ><DT | |
| 111 >10. <A | |
| 112 HREF="audio.html" | |
| 113 >Audio</A | |
| 114 ></DT | |
| 115 ><DT | |
| 116 >11. <A | |
| 117 HREF="cdrom.html" | |
| 118 >CD-ROM</A | |
| 119 ></DT | |
| 120 ><DT | |
| 121 >12. <A | |
| 122 HREF="thread.html" | |
| 123 >Multi-threaded Programming</A | |
| 124 ></DT | |
| 125 ><DT | |
| 126 >13. <A | |
| 127 HREF="time.html" | |
| 128 >Time</A | |
| 129 ></DT | |
| 130 ></DL | |
| 131 ></DIV | |
| 132 ></DIV | |
| 133 ></DIV | |
| 134 ><DIV | |
| 135 CLASS="NAVFOOTER" | |
| 136 ><HR | |
| 137 ALIGN="LEFT" | |
| 138 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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139 SUMMARY="Footer navigation table" |
| 0 | 140 WIDTH="100%" |
| 141 BORDER="0" | |
| 142 CELLPADDING="0" | |
| 143 CELLSPACING="0" | |
| 144 ><TR | |
| 145 ><TD | |
| 146 WIDTH="33%" | |
| 147 ALIGN="left" | |
| 148 VALIGN="top" | |
| 149 ><A | |
| 150 HREF="guidetimeexamples.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
151 ACCESSKEY="P" |
| 0 | 152 >Prev</A |
| 153 ></TD | |
| 154 ><TD | |
| 155 WIDTH="34%" | |
| 156 ALIGN="center" | |
| 157 VALIGN="top" | |
| 158 ><A | |
| 159 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
160 ACCESSKEY="H" |
| 0 | 161 >Home</A |
| 162 ></TD | |
| 163 ><TD | |
| 164 WIDTH="33%" | |
| 165 ALIGN="right" | |
| 166 VALIGN="top" | |
| 167 ><A | |
| 168 HREF="general.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
169 ACCESSKEY="N" |
| 0 | 170 >Next</A |
| 171 ></TD | |
| 172 ></TR | |
| 173 ><TR | |
| 174 ><TD | |
| 175 WIDTH="33%" | |
| 176 ALIGN="left" | |
| 177 VALIGN="top" | |
| 178 >Time Examples</TD | |
| 179 ><TD | |
| 180 WIDTH="34%" | |
| 181 ALIGN="center" | |
| 182 VALIGN="top" | |
| 183 > </TD | |
| 184 ><TD | |
| 185 WIDTH="33%" | |
| 186 ALIGN="right" | |
| 187 VALIGN="top" | |
| 188 >General</TD | |
| 189 ></TR | |
| 190 ></TABLE | |
| 191 ></DIV | |
| 192 ></BODY | |
| 193 ></HTML | |
| 194 > |