Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_MixAudio.3 @ 4287:0620847bf1a8 SDL-1.2
Fixed bug #798
kty@lavabit.com 2009-09-19 14:19:04 PDT
The stable release of SDL 1.2.13 for BeOS/Haiku has a bug in
BE_FindClosestFSMode that causes it to sometimes not select the best mode when
going fullscreen. There are in fact two bugs in the implementation but I will
not go into specifics because there is already a patch for it in the developer
SVN 1.3. However I am still reporting it because I believe the following code
is a better patch for the issue. The current implementation on SVN only works
if it is able to find an exact match for the requested mode. However, by
scanning from lowest-to-highest resolution instead of highest-to-lowest, one
can find the best mode at all times
| author | Sam Lantinga <slouken@libsdl.org> |
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| date | Sat, 10 Oct 2009 02:11:07 +0000 |
| parents | 4e3b250c950e |
| children | 1238da4a7112 |
| rev | line source |
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1 .TH "SDL_MixAudio" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
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3 SDL_MixAudio \- Mix audio data |
| 0 | 4 .SH "SYNOPSIS" |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBvoid \fBSDL_MixAudio\fP\fR(\fBUint8 *dst, Uint8 *src, Uint32 len, int volume\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
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11 This function takes two audio buffers of \fBlen\fR bytes each of the playing audio format and mixes them, performing addition, volume adjustment, and overflow clipping\&. The \fBvolume\fR ranges from 0 to \fBSDL_MIX_MAXVOLUME\fP and should be set to the maximum value for full audio volume\&. Note this does not change hardware volume\&. This is provided for convenience -- you can mix your own audio data\&. |
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12 .PP |
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13 .RS |
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14 \fBNote: |
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15 .PP |
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16 Do not use this function for mixing together more than two streams of sample data\&. The output from repeated application of this function may be distorted by clipping, because there is no accumulator with greater range than the input (not to mention this being an inefficient way of doing it)\&. Use mixing functions from SDL_mixer, OpenAL, or write your own mixer instead\&. |
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17 .RE |
| 0 | 18 .SH "SEE ALSO" |
| 19 .PP | |
| 20 \fI\fBSDL_OpenAudio\fP\fR | |
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21 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |