Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_MixAudio.3 @ 4390:725e506f6243 SDL-1.2
Fixed bug #895
Markus Rothe 2009-12-07 09:32:46 PST
Check if libspe2 is available
Building on PowerPC64 results in:
[...]
In file included from ./src/video/ps3/SDL_ps3events_c.h:33,
from ./src/video/ps3/SDL_ps3video.c:32:
./src/video/ps3/SDL_ps3video.h:34:21: error: libspe2.h: No such file or
directory
In file included from ./src/video/ps3/SDL_ps3events_c.h:33,
from ./src/video/ps3/SDL_ps3video.c:32:
./src/video/ps3/SDL_ps3video.h:75: error: expected specifier-qualifier-list
before 'spe_context_ptr_t'
./src/video/ps3/SDL_ps3video.c:78: error: expected '=', ',', ';', 'asm' or
'__attribute__' before 'fb_writer_spu'
./src/video/ps3/SDL_ps3video.c: In function 'PS3_VideoInit':
./src/video/ps3/SDL_ps3video.c:167: error: 'spu_data_t' has no member named
'program'
./src/video/ps3/SDL_ps3video.c:167: error: 'fb_writer_spu' undeclared (first
use in this function)
[...]
The problem is that the ps3 video driver is being build regardless if libspe2
is installed or not. The attached patch fixes this problem.
[ Note: The other headers that are being checked for are coming from the linux
headers package on powerpc64. As a result these are also available if you're on
a generic powerpc64 machine and not a PS3 only. ]
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 11 Dec 2009 15:14:13 +0000 |
parents | 1238da4a7112 |
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181
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Updated from the SDL Documentation Project
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1 .TH "SDL_MixAudio" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
0 | 2 .SH "NAME" |
4107
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Erik Heckers fixed bug #493
Sam Lantinga <slouken@libsdl.org>
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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 | |
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
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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\&. |
181
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12 .PP |
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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13 .RS |
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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14 \fBNote: |
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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15 .PP |
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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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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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
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17 .RE |
0 | 18 .SH "SEE ALSO" |
19 .PP | |
20 \fI\fBSDL_OpenAudio\fP\fR | |
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Debian patch: f230_manpages.diff
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21 .\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |