Mercurial > sdl-ios-xcode
annotate src/audio/SDL_audiodev.c @ 1029:f87f87efd45a
Date: Mon, 17 Jan 2005 20:54:50 +0200
From: Ville [snip]
Subject: [PATCH] SDL/DirectFB: remove Matrox CRTC2 flicker filter
Hi,
This patch removes the flicker filter option from the DirectFB backend's
Matrox CRTC2 code in SDL. I will be removing the option from DirectFB
(because it doesn't actually work) and that would cause the SDL code to
fail without this fix.
I was going to send this to some SDL list directly but libsdl.org is down
so I'm not sure what if any lists there are. Thomas Jarosch (the guy who
wrote the code) said you would accept SDL patches. Let me know if I should
send this somewhere else.
-- Ville Syrj�l� syrjala _at sci.fi http://www.sci.fi/~syrjala/
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Mon, 17 Jan 2005 19:38:28 +0000 |
| parents | 0f3aa6ab3341 |
| children | 974ba6ae0fa3 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Get the name of the audio device we use for output */ | |
| 29 | |
| 30 #if defined(unix) || defined(__unix__) | |
| 31 | |
| 32 #include <stdlib.h> | |
| 33 #include <stdio.h> | |
| 34 #include <fcntl.h> | |
| 35 #include <sys/types.h> | |
| 36 #include <sys/stat.h> | |
| 37 #include <string.h> | |
| 38 | |
| 39 #include "SDL_audiodev_c.h" | |
| 40 | |
| 41 #ifndef _PATH_DEV_DSP | |
|
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Select patches included from The NetBSD Package Collection (www.pkgsrc.org)
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42 #if defined(__NetBSD__) || defined(__OpenBSD__) |
|
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43 #define _PATH_DEV_DSP "/dev/audio" |
|
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44 #else |
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45 #define _PATH_DEV_DSP "/dev/dsp" |
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46 #endif |
| 0 | 47 #endif |
| 48 #ifndef _PATH_DEV_DSP24 | |
| 49 #define _PATH_DEV_DSP24 "/dev/sound/dsp" | |
| 50 #endif | |
| 51 #ifndef _PATH_DEV_AUDIO | |
| 52 #define _PATH_DEV_AUDIO "/dev/audio" | |
| 53 #endif | |
| 54 | |
| 55 | |
| 56 int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) | |
| 57 { | |
| 58 const char *audiodev; | |
| 59 int audio_fd; | |
| 60 char audiopath[1024]; | |
| 61 | |
| 62 /* Figure out what our audio device is */ | |
| 63 if ( ((audiodev=getenv("SDL_PATH_DSP")) == NULL) && | |
| 64 ((audiodev=getenv("AUDIODEV")) == NULL) ) { | |
| 65 if ( classic ) { | |
| 66 audiodev = _PATH_DEV_AUDIO; | |
| 67 } else { | |
| 68 struct stat sb; | |
| 69 | |
| 70 /* Added support for /dev/sound/\* in Linux 2.4 */ | |
| 71 if ( (stat("/dev/sound", &sb) == 0) && | |
| 72 S_ISDIR(sb.st_mode) ) { | |
| 73 audiodev = _PATH_DEV_DSP24; | |
| 74 } else { | |
| 75 audiodev = _PATH_DEV_DSP; | |
| 76 } | |
| 77 } | |
| 78 } | |
| 79 audio_fd = open(audiodev, flags, 0); | |
| 80 | |
| 81 /* If the first open fails, look for other devices */ | |
| 82 if ( (audio_fd < 0) && (strlen(audiodev) < (sizeof(audiopath)-3)) ) { | |
| 83 int exists, instance; | |
| 84 struct stat sb; | |
| 85 | |
| 86 instance = 1; | |
| 87 do { /* Don't use errno ENOENT - it may not be thread-safe */ | |
| 88 sprintf(audiopath, "%s%d", audiodev, instance++); | |
| 89 exists = 0; | |
| 90 if ( stat(audiopath, &sb) == 0 ) { | |
| 91 exists = 1; | |
| 92 audio_fd = open(audiopath, flags, 0); | |
| 93 } | |
| 94 } while ( exists && (audio_fd < 0) ); | |
| 95 audiodev = audiopath; | |
| 96 } | |
| 97 if ( path != NULL ) { | |
| 98 strncpy(path, audiodev, maxlen); | |
| 99 path[maxlen-1] = '\0'; | |
| 100 } | |
| 101 return(audio_fd); | |
| 102 } | |
| 103 | |
| 104 #elif defined(_AIX) | |
| 105 | |
| 106 /* Get the name of the audio device we use for output */ | |
| 107 | |
| 108 #include <stdlib.h> | |
| 109 #include <sys/types.h> | |
| 110 #include <sys/stat.h> | |
| 111 #include <string.h> | |
| 112 | |
| 113 #include "SDL_audiodev_c.h" | |
| 114 | |
| 115 #ifndef _PATH_DEV_DSP | |
| 116 #define _PATH_DEV_DSP "/dev/%caud%c/%c" | |
| 117 #endif | |
| 118 | |
| 119 char devsettings[][3] = | |
| 120 { | |
| 121 { 'p', '0', '1' }, { 'p', '0', '2' }, { 'p', '0', '3' }, { 'p', '0', '4' }, | |
| 122 { 'p', '1', '1' }, { 'p', '1', '2' }, { 'p', '1', '3' }, { 'p', '1', '4' }, | |
| 123 { 'p', '2', '1' }, { 'p', '2', '2' }, { 'p', '2', '3' }, { 'p', '2', '4' }, | |
| 124 { 'p', '3', '1' }, { 'p', '3', '2' }, { 'p', '3', '3' }, { 'p', '3', '4' }, | |
| 125 { 'b', '0', '1' }, { 'b', '0', '2' }, { 'b', '0', '3' }, { 'b', '0', '4' }, | |
| 126 { 'b', '1', '1' }, { 'b', '1', '2' }, { 'b', '1', '3' }, { 'b', '1', '4' }, | |
| 127 { 'b', '2', '1' }, { 'b', '2', '2' }, { 'b', '2', '3' }, { 'b', '2', '4' }, | |
| 128 { 'b', '3', '1' }, { 'b', '3', '2' }, { 'b', '3', '3' }, { 'b', '3', '4' }, | |
| 129 { '\0', '\0', '\0' } | |
| 130 }; | |
| 131 | |
| 132 static int OpenUserDefinedDevice(char *path, int maxlen, int flags) | |
| 133 { | |
| 134 const char *audiodev; | |
| 135 int audio_fd; | |
| 136 | |
| 137 /* Figure out what our audio device is */ | |
| 138 if ((audiodev=getenv("SDL_PATH_DSP")) == NULL) { | |
| 139 audiodev=getenv("AUDIODEV"); | |
| 140 } | |
| 141 if ( audiodev == NULL ) { | |
| 142 return -1; | |
| 143 } | |
| 144 audio_fd = open(audiodev, flags, 0); | |
| 145 if ( path != NULL ) { | |
| 146 strncpy(path, audiodev, maxlen); | |
| 147 path[maxlen-1] = '\0'; | |
| 148 } | |
| 149 return audio_fd; | |
| 150 } | |
| 151 | |
| 152 int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) | |
| 153 { | |
| 154 struct stat sb; | |
| 155 int audio_fd; | |
| 156 char audiopath[1024]; | |
| 157 int cycle; | |
| 158 | |
| 159 audio_fd = OpenUserDefinedDevice(path,maxlen,flags); | |
| 160 if ( audio_fd != -1 ) { | |
| 161 return audio_fd; | |
| 162 } | |
| 163 | |
| 164 cycle = 0; | |
| 165 while( devsettings[cycle][0] != '\0' ) { | |
| 166 sprintf( audiopath, | |
| 167 _PATH_DEV_DSP, | |
| 168 devsettings[cycle][0], | |
| 169 devsettings[cycle][1], | |
| 170 devsettings[cycle][2]); | |
| 171 | |
| 172 if ( stat(audiopath, &sb) == 0 ) { | |
| 173 audio_fd = open(audiopath, flags, 0); | |
| 174 if ( audio_fd > 0 ) { | |
| 175 if ( path != NULL ) { | |
| 176 strncpy( path, audiopath, maxlen ); | |
| 177 path[maxlen-1] = '\0'; | |
| 178 } | |
| 179 return audio_fd; | |
| 180 } | |
| 181 } | |
| 182 } | |
| 183 return -1; | |
| 184 } | |
| 185 | |
| 186 #endif /* UNIX system */ |