view docs/man3/SDL_MixAudio.3 @ 916:46916168361d

Date: Sun, 25 Jul 2004 23:10:03 +0800 From: Chris Taylor Subject: SDL for Macintosh Programmer's Workshop: removed dynamic loading I'm working on a game called D2X which uses SDL, and I recently ported it to Mac OS 9. I used MPW to build it. It uses OpenGL. To get it to work, I had to build SDL so it doesn't dynamically load OpenGL. This is because I don't think MPW supports dynamic loading. The following patch makes sure when SDL is built under MPW, dynamic loading of shared libraries is disabled.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 25 Jul 2004 19:43:56 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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.TH "SDL_MixAudio" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_MixAudio\- Mix audio data
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBvoid \fBSDL_MixAudio\fP\fR(\fBUint8 *dst, Uint8 *src, Uint32 len, int volume\fR);
.SH "DESCRIPTION"
.PP
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\&.
.PP
.RS
\fBNote:  
.PP
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\&.
.RE
.SH "SEE ALSO"
.PP
\fI\fBSDL_OpenAudio\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58