Mercurial > sdl-ios-xcode
view src/audio/SDL_audiodev.c @ 914:bbf8dcc8aed6
Date: Wed, 23 Jun 2004 17:05:33 -0400
From: Chris Nelson
Subject: [SDL] [Patch] WiseGroup MP-8800 / MP-8866 (PS2 Joystick)
In the current cvs version, SDL doesn't handle these Playstation2
controller => USB adapters correctly, in linux.
It will always assume that the maximum number of joysticks (2 in the
case of the MP-8866, 4 in the case of the 8800) are plugged in. This is
bad not only because it allows SDL to exaggerate the number of logical
joysticks, but primarily because the joystick axes are mapped
incorrectly, all over the place, such that the devices are effectively
unusable unless you have the maximum number of joysticks plugged in.
My changes to src/joystick/linux/SDL_sysjoystick.c build on another's
previous work (which was a special case for this very joystick,
actually), and fix both of these problems, as well as making the current
code a little more general, to allow for others to more easily drop in
code for quirky joysticks such as these.
I've tested this code under 2.6.7 as well as 2.4.24... Both work as
advertised (provided you load the JOYDEV linux code as a module,
otherwise they won't work at all, new code or old, but that's another
issue entirely).
Though this sounds horribly formal, you have my permission to distribute
all of my work on this issue under the LGPL. So there.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 25 Jul 2004 18:31:50 +0000 |
parents | b8d311d90021 |
children | 0f3aa6ab3341 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Get the name of the audio device we use for output */ #if defined(unix) || defined(__unix__) #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #include <string.h> #include "SDL_audiodev_c.h" #ifndef _PATH_DEV_DSP #ifdef __OpenBSD__ #define _PATH_DEV_DSP "/dev/audio" #else #define _PATH_DEV_DSP "/dev/dsp" #endif #endif #ifndef _PATH_DEV_DSP24 #define _PATH_DEV_DSP24 "/dev/sound/dsp" #endif #ifndef _PATH_DEV_AUDIO #define _PATH_DEV_AUDIO "/dev/audio" #endif int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) { const char *audiodev; int audio_fd; char audiopath[1024]; /* Figure out what our audio device is */ if ( ((audiodev=getenv("SDL_PATH_DSP")) == NULL) && ((audiodev=getenv("AUDIODEV")) == NULL) ) { if ( classic ) { audiodev = _PATH_DEV_AUDIO; } else { struct stat sb; /* Added support for /dev/sound/\* in Linux 2.4 */ if ( (stat("/dev/sound", &sb) == 0) && S_ISDIR(sb.st_mode) ) { audiodev = _PATH_DEV_DSP24; } else { audiodev = _PATH_DEV_DSP; } } } audio_fd = open(audiodev, flags, 0); /* If the first open fails, look for other devices */ if ( (audio_fd < 0) && (strlen(audiodev) < (sizeof(audiopath)-3)) ) { int exists, instance; struct stat sb; instance = 1; do { /* Don't use errno ENOENT - it may not be thread-safe */ sprintf(audiopath, "%s%d", audiodev, instance++); exists = 0; if ( stat(audiopath, &sb) == 0 ) { exists = 1; audio_fd = open(audiopath, flags, 0); } } while ( exists && (audio_fd < 0) ); audiodev = audiopath; } if ( path != NULL ) { strncpy(path, audiodev, maxlen); path[maxlen-1] = '\0'; } return(audio_fd); } #elif defined(_AIX) /* Get the name of the audio device we use for output */ #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <string.h> #include "SDL_audiodev_c.h" #ifndef _PATH_DEV_DSP #define _PATH_DEV_DSP "/dev/%caud%c/%c" #endif char devsettings[][3] = { { 'p', '0', '1' }, { 'p', '0', '2' }, { 'p', '0', '3' }, { 'p', '0', '4' }, { 'p', '1', '1' }, { 'p', '1', '2' }, { 'p', '1', '3' }, { 'p', '1', '4' }, { 'p', '2', '1' }, { 'p', '2', '2' }, { 'p', '2', '3' }, { 'p', '2', '4' }, { 'p', '3', '1' }, { 'p', '3', '2' }, { 'p', '3', '3' }, { 'p', '3', '4' }, { 'b', '0', '1' }, { 'b', '0', '2' }, { 'b', '0', '3' }, { 'b', '0', '4' }, { 'b', '1', '1' }, { 'b', '1', '2' }, { 'b', '1', '3' }, { 'b', '1', '4' }, { 'b', '2', '1' }, { 'b', '2', '2' }, { 'b', '2', '3' }, { 'b', '2', '4' }, { 'b', '3', '1' }, { 'b', '3', '2' }, { 'b', '3', '3' }, { 'b', '3', '4' }, { '\0', '\0', '\0' } }; static int OpenUserDefinedDevice(char *path, int maxlen, int flags) { const char *audiodev; int audio_fd; /* Figure out what our audio device is */ if ((audiodev=getenv("SDL_PATH_DSP")) == NULL) { audiodev=getenv("AUDIODEV"); } if ( audiodev == NULL ) { return -1; } audio_fd = open(audiodev, flags, 0); if ( path != NULL ) { strncpy(path, audiodev, maxlen); path[maxlen-1] = '\0'; } return audio_fd; } int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) { struct stat sb; int audio_fd; char audiopath[1024]; int cycle; audio_fd = OpenUserDefinedDevice(path,maxlen,flags); if ( audio_fd != -1 ) { return audio_fd; } cycle = 0; while( devsettings[cycle][0] != '\0' ) { sprintf( audiopath, _PATH_DEV_DSP, devsettings[cycle][0], devsettings[cycle][1], devsettings[cycle][2]); if ( stat(audiopath, &sb) == 0 ) { audio_fd = open(audiopath, flags, 0); if ( audio_fd > 0 ) { if ( path != NULL ) { strncpy( path, audiopath, maxlen ); path[maxlen-1] = '\0'; } return audio_fd; } } } return -1; } #endif /* UNIX system */