Mercurial > sdl-ios-xcode
view docs/man3/SDL_MixAudio.3 @ 4256:ba587a51f899 SDL-1.2
Vitaly Minko to slouken
Hi all,
I wrote a patch, which allows user to rotate the screen in case of fbcon driver.
The rotation angle is controlled by SDL_VIDEO_FBCON_ROTATION environment variable and possible values are:
not set - Not rotating, no shadow.
"NONE" - Not rotating, but still using shadow.
"CW" - Rotating screen clockwise.
"UD" - Rotating screen upside down.
"CCW" - Rotating screen counter clockwise.
The patch is based on wscons driver, written by Staffan Ulfberg.
I tested it on
Device: Sharp Zaurus SL-C1000
SDL version: 1.2.13
Kernel version: 2.6.24.4
Best regards,
Vitaly.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 28 Sep 2009 06:23:22 +0000 |
parents | 4e3b250c950e |
children | 1238da4a7112 |
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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