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comparison src/audio/SDL_audiodev.c @ 1895:c121d94672cb

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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 10 Jul 2006 21:04:37 +0000
parents 12b6d331d82a
children 5f6550e5184f 7852b5b78af5
comparison
equal deleted inserted replaced
1894:c69cee13dd76 1895:c121d94672cb
45 #ifndef _PATH_DEV_AUDIO 45 #ifndef _PATH_DEV_AUDIO
46 #define _PATH_DEV_AUDIO "/dev/audio" 46 #define _PATH_DEV_AUDIO "/dev/audio"
47 #endif 47 #endif
48 48
49 49
50 int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) 50 int
51 SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic)
51 { 52 {
52 const char *audiodev; 53 const char *audiodev;
53 int audio_fd; 54 int audio_fd;
54 char audiopath[1024]; 55 char audiopath[1024];
55 56
56 /* Figure out what our audio device is */ 57 /* Figure out what our audio device is */
57 if ( ((audiodev=SDL_getenv("SDL_PATH_DSP")) == NULL) && 58 if (((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) &&
58 ((audiodev=SDL_getenv("AUDIODEV")) == NULL) ) { 59 ((audiodev = SDL_getenv("AUDIODEV")) == NULL)) {
59 if ( classic ) { 60 if (classic) {
60 audiodev = _PATH_DEV_AUDIO; 61 audiodev = _PATH_DEV_AUDIO;
61 } else { 62 } else {
62 struct stat sb; 63 struct stat sb;
63 64
64 /* Added support for /dev/sound/\* in Linux 2.4 */ 65 /* Added support for /dev/sound/\* in Linux 2.4 */
65 if ( ((stat("/dev/sound", &sb) == 0) && S_ISDIR(sb.st_mode)) && 66 if (((stat("/dev/sound", &sb) == 0) && S_ISDIR(sb.st_mode))
66 ((stat(_PATH_DEV_DSP24, &sb) == 0) && S_ISCHR(sb.st_mode)) ) { 67 && ((stat(_PATH_DEV_DSP24, &sb) == 0)
67 audiodev = _PATH_DEV_DSP24; 68 && S_ISCHR(sb.st_mode))) {
68 } else { 69 audiodev = _PATH_DEV_DSP24;
69 audiodev = _PATH_DEV_DSP; 70 } else {
70 } 71 audiodev = _PATH_DEV_DSP;
71 } 72 }
72 } 73 }
73 audio_fd = open(audiodev, flags, 0); 74 }
75 audio_fd = open(audiodev, flags, 0);
74 76
75 /* If the first open fails, look for other devices */ 77 /* If the first open fails, look for other devices */
76 if ( (audio_fd < 0) && (SDL_strlen(audiodev) < (sizeof(audiopath)-3)) ) { 78 if ((audio_fd < 0) && (SDL_strlen(audiodev) < (sizeof(audiopath) - 3))) {
77 int exists, instance; 79 int exists, instance;
78 struct stat sb; 80 struct stat sb;
79 81
80 instance = 1; 82 instance = 1;
81 do { /* Don't use errno ENOENT - it may not be thread-safe */ 83 do { /* Don't use errno ENOENT - it may not be thread-safe */
82 SDL_snprintf(audiopath, SDL_arraysize(audiopath), 84 SDL_snprintf(audiopath, SDL_arraysize(audiopath),
83 "%s%d", audiodev, instance++); 85 "%s%d", audiodev, instance++);
84 exists = 0; 86 exists = 0;
85 if ( stat(audiopath, &sb) == 0 ) { 87 if (stat(audiopath, &sb) == 0) {
86 exists = 1; 88 exists = 1;
87 audio_fd = open(audiopath, flags, 0); 89 audio_fd = open(audiopath, flags, 0);
88 } 90 }
89 } while ( exists && (audio_fd < 0) ); 91 }
90 audiodev = audiopath; 92 while (exists && (audio_fd < 0));
91 } 93 audiodev = audiopath;
92 if ( path != NULL ) { 94 }
93 SDL_strlcpy(path, audiodev, maxlen); 95 if (path != NULL) {
94 path[maxlen-1] = '\0'; 96 SDL_strlcpy(path, audiodev, maxlen);
95 } 97 path[maxlen - 1] = '\0';
96 return(audio_fd); 98 }
99 return (audio_fd);
97 } 100 }
98 101
99 #elif SDL_AUDIO_DRIVER_PAUD 102 #elif SDL_AUDIO_DRIVER_PAUD
100 103
101 /* Get the name of the audio device we use for output */ 104 /* Get the name of the audio device we use for output */
108 111
109 #ifndef _PATH_DEV_DSP 112 #ifndef _PATH_DEV_DSP
110 #define _PATH_DEV_DSP "/dev/%caud%c/%c" 113 #define _PATH_DEV_DSP "/dev/%caud%c/%c"
111 #endif 114 #endif
112 115
113 char devsettings[][3] = 116 char devsettings[][3] = {
114 { 117 {'p', '0', '1'}, {'p', '0', '2'}, {'p', '0', '3'}, {'p', '0', '4'},
115 { 'p', '0', '1' }, { 'p', '0', '2' }, { 'p', '0', '3' }, { 'p', '0', '4' }, 118 {'p', '1', '1'}, {'p', '1', '2'}, {'p', '1', '3'}, {'p', '1', '4'},
116 { 'p', '1', '1' }, { 'p', '1', '2' }, { 'p', '1', '3' }, { 'p', '1', '4' }, 119 {'p', '2', '1'}, {'p', '2', '2'}, {'p', '2', '3'}, {'p', '2', '4'},
117 { 'p', '2', '1' }, { 'p', '2', '2' }, { 'p', '2', '3' }, { 'p', '2', '4' }, 120 {'p', '3', '1'}, {'p', '3', '2'}, {'p', '3', '3'}, {'p', '3', '4'},
118 { 'p', '3', '1' }, { 'p', '3', '2' }, { 'p', '3', '3' }, { 'p', '3', '4' }, 121 {'b', '0', '1'}, {'b', '0', '2'}, {'b', '0', '3'}, {'b', '0', '4'},
119 { 'b', '0', '1' }, { 'b', '0', '2' }, { 'b', '0', '3' }, { 'b', '0', '4' }, 122 {'b', '1', '1'}, {'b', '1', '2'}, {'b', '1', '3'}, {'b', '1', '4'},
120 { 'b', '1', '1' }, { 'b', '1', '2' }, { 'b', '1', '3' }, { 'b', '1', '4' }, 123 {'b', '2', '1'}, {'b', '2', '2'}, {'b', '2', '3'}, {'b', '2', '4'},
121 { 'b', '2', '1' }, { 'b', '2', '2' }, { 'b', '2', '3' }, { 'b', '2', '4' }, 124 {'b', '3', '1'}, {'b', '3', '2'}, {'b', '3', '3'}, {'b', '3', '4'},
122 { 'b', '3', '1' }, { 'b', '3', '2' }, { 'b', '3', '3' }, { 'b', '3', '4' }, 125 {'\0', '\0', '\0'}
123 { '\0', '\0', '\0' }
124 }; 126 };
125 127
126 static int OpenUserDefinedDevice(char *path, int maxlen, int flags) 128 static int
129 OpenUserDefinedDevice(char *path, int maxlen, int flags)
127 { 130 {
128 const char *audiodev; 131 const char *audiodev;
129 int audio_fd; 132 int audio_fd;
130 133
131 /* Figure out what our audio device is */ 134 /* Figure out what our audio device is */
132 if ((audiodev=SDL_getenv("SDL_PATH_DSP")) == NULL) { 135 if ((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) {
133 audiodev=SDL_getenv("AUDIODEV"); 136 audiodev = SDL_getenv("AUDIODEV");
134 } 137 }
135 if ( audiodev == NULL ) { 138 if (audiodev == NULL) {
136 return -1; 139 return -1;
137 } 140 }
138 audio_fd = open(audiodev, flags, 0); 141 audio_fd = open(audiodev, flags, 0);
139 if ( path != NULL ) { 142 if (path != NULL) {
140 SDL_strlcpy(path, audiodev, maxlen); 143 SDL_strlcpy(path, audiodev, maxlen);
141 path[maxlen-1] = '\0'; 144 path[maxlen - 1] = '\0';
142 } 145 }
143 return audio_fd; 146 return audio_fd;
144 } 147 }
145 148
146 int SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic) 149 int
150 SDL_OpenAudioPath(char *path, int maxlen, int flags, int classic)
147 { 151 {
148 struct stat sb; 152 struct stat sb;
149 int audio_fd; 153 int audio_fd;
150 char audiopath[1024]; 154 char audiopath[1024];
151 int cycle; 155 int cycle;
152 156
153 audio_fd = OpenUserDefinedDevice(path,maxlen,flags); 157 audio_fd = OpenUserDefinedDevice(path, maxlen, flags);
154 if ( audio_fd != -1 ) { 158 if (audio_fd != -1) {
155 return audio_fd; 159 return audio_fd;
156 } 160 }
157 161
158 cycle = 0; 162 cycle = 0;
159 while( devsettings[cycle][0] != '\0' ) { 163 while (devsettings[cycle][0] != '\0') {
160 SDL_snprintf( audiopath, SDL_arraysize(audiopath), 164 SDL_snprintf(audiopath, SDL_arraysize(audiopath),
161 _PATH_DEV_DSP, 165 _PATH_DEV_DSP,
162 devsettings[cycle][0], 166 devsettings[cycle][0],
163 devsettings[cycle][1], 167 devsettings[cycle][1], devsettings[cycle][2]);
164 devsettings[cycle][2]);
165 168
166 if ( stat(audiopath, &sb) == 0 ) { 169 if (stat(audiopath, &sb) == 0) {
167 audio_fd = open(audiopath, flags, 0); 170 audio_fd = open(audiopath, flags, 0);
168 if ( audio_fd > 0 ) { 171 if (audio_fd > 0) {
169 if ( path != NULL ) { 172 if (path != NULL) {
170 SDL_strlcpy( path, audiopath, maxlen ); 173 SDL_strlcpy(path, audiopath, maxlen);
171 } 174 }
172 return audio_fd; 175 return audio_fd;
173 } 176 }
174 } 177 }
175 } 178 }
176 return -1; 179 return -1;
177 } 180 }
178 181
179 #endif /* Audio driver selection */ 182 #endif /* Audio driver selection */
183 /* vi: set ts=4 sw=4 expandtab: */