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comparison src/audio/baudio/SDL_beaudio.cc @ 3837:7c9663fb0860 SDL-ryan-multiple-audio-device

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BeOS audio now works in 1.3 branch.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Oct 2006 01:39:01 +0000
parents 29e83f221c62
children 66fb40445587
comparison
equal deleted inserted replaced
3836:7dc7327cd626 3837:7c9663fb0860
37 #include "SDL_beaudio.h" 37 #include "SDL_beaudio.h"
38 38
39 } 39 }
40 40
41 41
42 static int BEAUDIO_Available(void) 42 static int BEOSAUDIO_Available(void)
43 { 43 {
44 return 1; /* Always available on BeOS. */ 44 return 1; /* Always available on BeOS. */
45 } 45 }
46 46
47 47
77 } 77 }
78 } 78 }
79 } 79 }
80 80
81 static void 81 static void
82 BEAUDIO_CloseDevice(_THIS) 82 BEOSAUDIO_CloseDevice(_THIS)
83 { 83 {
84 if (_this->hidden != NULL) { 84 if (_this->hidden != NULL) {
85 if (_this->hidden->audio_obj) { 85 if (_this->hidden->audio_obj) {
86 _this->hidden->audio_obj->Stop(); 86 _this->hidden->audio_obj->Stop();
87 delete _this->hidden->audio_obj; 87 delete _this->hidden->audio_obj;
88 _this->hidden->audio_obj = NULL; 88 _this->hidden->audio_obj = NULL;
89 } 89 }
90 90
91 delete _this->hidden; 91 delete _this->hidden;
92 _this->hidden = NULL; 92 _this->hidden = NULL;
93
94 /* Quit the Be Application, if there's nothing left to do */
95 SDL_QuitBeApp();
96 } 93 }
97 } 94 }
98 95
99 static int 96 static int
100 BEAUDIO_OpenDevice(_THIS, const char *devname, int iscapture) 97 BEOSAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
101 { 98 {
102 int valid_datatype = 0; 99 int valid_datatype = 0;
103 media_raw_audio_format format; 100 media_raw_audio_format format;
104 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format); 101 SDL_AudioFormat test_format = SDL_FirstAudioFormat(_this->spec.format);
105 102
106 /* Initialize all variables that we clean on shutdown */ 103 /* Initialize all variables that we clean on shutdown */
107 _this->hidden = new SDL_PrivateAudioData; 104 _this->hidden = new SDL_PrivateAudioData;
108 if (_this->hidden == NULL) { 105 if (_this->hidden == NULL) {
109 SDL_OutOfMemory(); 106 SDL_OutOfMemory();
110 return 0; 107 return 0;
111 } 108 }
112 SDL_memset(_this->hidden, 0, (sizeof *_this->hidden)); 109 SDL_memset(_this->hidden, 0, (sizeof *_this->hidden));
113 110
114 /* Initialize the Be Application, if it's not already started */
115 if (SDL_InitBeApp() < 0) {
116 return 0;
117 }
118
119 /* Parse the audio format and fill the Be raw audio format */ 111 /* Parse the audio format and fill the Be raw audio format */
120 SDL_memset(&format, '\0', sizeof(media_raw_audio_format)); 112 SDL_memset(&format, '\0', sizeof(media_raw_audio_format));
121 format.byte_order = B_MEDIA_LITTLE_ENDIAN; 113 format.byte_order = B_MEDIA_LITTLE_ENDIAN;
122 format.frame_rate = (float) this->spec.freq; 114 format.frame_rate = (float) _this->spec.freq;
123 format.channel_count = this->spec.channels; /* !!! FIXME: support > 2? */ 115 format.channel_count = _this->spec.channels; /* !!! FIXME: support > 2? */
124 while ((!valid_datatype) && (test_format)) { 116 while ((!valid_datatype) && (test_format)) {
125 valid_datatype = 1; 117 valid_datatype = 1;
126 this->spec.format = test_format; 118 _this->spec.format = test_format;
127 switch (test_format) { 119 switch (test_format) {
128 case AUDIO_S8: 120 case AUDIO_S8:
129 format.format = media_raw_audio_format::B_AUDIO_CHAR; 121 format.format = media_raw_audio_format::B_AUDIO_CHAR;
130 break; 122 break;
131 123
165 test_format = SDL_NextAudioFormat(); 157 test_format = SDL_NextAudioFormat();
166 break; 158 break;
167 } 159 }
168 } 160 }
169 161
170 format.buffer_size = this->spec.samples; 162 format.buffer_size = _this->spec.samples;
171 163
172 if (!valid_datatype) { /* shouldn't happen, but just in case... */ 164 if (!valid_datatype) { /* shouldn't happen, but just in case... */
165 BEOSAUDIO_CloseDevice(_this);
173 SDL_SetError("Unsupported audio format"); 166 SDL_SetError("Unsupported audio format");
174 return 0; 167 return 0;
175 } 168 }
176 169
177 /* Calculate the final parameters for this audio specification */ 170 /* Calculate the final parameters for this audio specification */
178 SDL_CalculateAudioSpec(&this->spec); 171 SDL_CalculateAudioSpec(&_this->spec);
179 172
180 /* Subscribe to the audio stream (creates a new thread) */ 173 /* Subscribe to the audio stream (creates a new thread) */
181 sigset_t omask; 174 sigset_t omask;
182 SDL_MaskSignals(&omask); 175 SDL_MaskSignals(&omask);
183 _this->hidden->audio_obj = new BSoundPlayer(&format, "SDL Audio", 176 _this->hidden->audio_obj = new BSoundPlayer(&format, "SDL Audio",
185 SDL_UnmaskSignals(&omask); 178 SDL_UnmaskSignals(&omask);
186 179
187 if (_this->hidden->audio_obj->Start() == B_NO_ERROR) { 180 if (_this->hidden->audio_obj->Start() == B_NO_ERROR) {
188 _this->hidden->audio_obj->SetHasData(true); 181 _this->hidden->audio_obj->SetHasData(true);
189 } else { 182 } else {
183 BEOSAUDIO_CloseDevice(_this);
190 SDL_SetError("Unable to start Be audio"); 184 SDL_SetError("Unable to start Be audio");
191 return 0; 185 return 0;
192 } 186 }
193 187
194 /* We're running! */ 188 /* We're running! */
195 return 1; 189 return 1;
196 } 190 }
197 191
192 static void
193 BEOSAUDIO_Deinitialize(void)
194 {
195 SDL_QuitBeApp();
196 }
197
198 static int 198 static int
199 BEAUDIO_Init(SDL_AudioDriverImpl *impl) 199 BEOSAUDIO_Init(SDL_AudioDriverImpl *impl)
200 { 200 {
201 /* Initialize the Be Application, if it's not already started */
202 if (SDL_InitBeApp() < 0) {
203 return 0;
204 }
205
201 /* Set the function pointers */ 206 /* Set the function pointers */
202 impl->OpenDevice = DSP_OpenDevice; 207 impl->OpenDevice = BEOSAUDIO_OpenDevice;
203 impl->CloseDevice = DSP_CloseDevice; 208 impl->CloseDevice = BEOSAUDIO_CloseDevice;
209 impl->Deinitialize = BEOSAUDIO_Deinitialize;
204 impl->ProvidesOwnCallbackThread = 1; 210 impl->ProvidesOwnCallbackThread = 1;
205 impl->OnlyHasDefaultOutputDevice = 1; 211 impl->OnlyHasDefaultOutputDevice = 1;
206 212
207 return 1; 213 return 1;
208 } 214 }
209 215
210 216 extern "C" { extern AudioBootStrap BEOSAUDIO_bootstrap; }
211 AudioBootStrap BEAUDIO_bootstrap = { 217 AudioBootStrap BEOSAUDIO_bootstrap = {
212 "baudio", "BeOS BSoundPlayer", 218 "baudio", "BeOS BSoundPlayer",
213 BEAUDIO_Available, BEAUDIO_Init, 0 219 BEOSAUDIO_Available, BEOSAUDIO_Init, 0
214 }; 220 };
215 221
216 /* vi: set ts=4 sw=4 expandtab: */ 222 /* vi: set ts=4 sw=4 expandtab: */
223