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comparison src/audio/macosx/SDL_coreaudio.c @ 3790:8f8209f8da6d SDL-ryan-multiple-audio-device

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Added audio device enumeration for 1.3.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 03 Oct 2006 20:07:50 +0000
parents 7006b176ef4f
children 866c310e2cb5
comparison
equal deleted inserted replaced
3789:e2f68b579a01 3790:8f8209f8da6d
27 #include "SDL_audio.h" 27 #include "SDL_audio.h"
28 #include "../SDL_audio_c.h" 28 #include "../SDL_audio_c.h"
29 #include "../SDL_sysaudio.h" 29 #include "../SDL_sysaudio.h"
30 #include "SDL_coreaudio.h" 30 #include "SDL_coreaudio.h"
31 31
32 #define DEBUG_COREAUDIO 1 32 #define DEBUG_COREAUDIO 0
33 33
34 typedef struct COREAUDIO_DeviceList 34 typedef struct COREAUDIO_DeviceList
35 { 35 {
36 AudioDeviceID id; 36 AudioDeviceID id;
37 const char *name; 37 const char *name;
167 (*devCount)++; 167 (*devCount)++;
168 } 168 }
169 } 169 }
170 } 170 }
171 171
172 static inline void
173 build_device_lists(void)
174 {
175 build_device_list(0, &outputDevices, &outputDeviceCount);
176 build_device_list(1, &inputDevices, &inputDeviceCount);
177 }
178
179
180 static inline void
181 free_device_lists(void)
182 {
183 free_device_list(&outputDevices, &outputDeviceCount);
184 free_device_list(&inputDevices, &inputDeviceCount);
185 }
186
187
172 static int 188 static int
173 find_device_id(const char *devname, int iscapture, AudioDeviceID *id) 189 find_device_id(const char *devname, int iscapture, AudioDeviceID *id)
174 { 190 {
175 int i = ((iscapture) ? inputDeviceCount : outputDeviceCount); 191 int i = ((iscapture) ? inputDeviceCount : outputDeviceCount);
176 COREAUDIO_DeviceList *devs = ((iscapture) ? inputDevices : outputDevices); 192 COREAUDIO_DeviceList *devs = ((iscapture) ? inputDevices : outputDevices);
186 } 202 }
187 203
188 204
189 /* Audio driver functions */ 205 /* Audio driver functions */
190 206
207 static int COREAUDIO_DetectDevices(int iscapture);
208 static const char *COREAUDIO_GetAudioDevice(int index, int iscapture);
191 static int COREAUDIO_OpenAudio(_THIS, const char *devname, int iscapture); 209 static int COREAUDIO_OpenAudio(_THIS, const char *devname, int iscapture);
192 static void COREAUDIO_WaitAudio(_THIS); 210 static void COREAUDIO_WaitAudio(_THIS);
193 static void COREAUDIO_PlayAudio(_THIS); 211 static void COREAUDIO_PlayAudio(_THIS);
194 static Uint8 *COREAUDIO_GetAudioBuf(_THIS); 212 static Uint8 *COREAUDIO_GetAudioBuf(_THIS);
195 static void COREAUDIO_CloseAudio(_THIS); 213 static void COREAUDIO_CloseAudio(_THIS);
204 } 222 }
205 223
206 static int 224 static int
207 COREAUDIO_Init(SDL_AudioDriverImpl *impl) 225 COREAUDIO_Init(SDL_AudioDriverImpl *impl)
208 { 226 {
209 /* !!! FIXME: should these _really_ be static? */
210 build_device_list(0, &outputDevices, &outputDeviceCount);
211 build_device_list(1, &inputDevices, &inputDeviceCount);
212
213 /* Set the function pointers */ 227 /* Set the function pointers */
228 impl->DetectDevices = COREAUDIO_DetectDevices;
229 impl->GetAudioDevice = COREAUDIO_GetAudioDevice;
214 impl->OpenAudio = COREAUDIO_OpenAudio; 230 impl->OpenAudio = COREAUDIO_OpenAudio;
215 impl->WaitAudio = COREAUDIO_WaitAudio; 231 impl->WaitAudio = COREAUDIO_WaitAudio;
216 impl->PlayAudio = COREAUDIO_PlayAudio; 232 impl->PlayAudio = COREAUDIO_PlayAudio;
217 impl->GetAudioBuf = COREAUDIO_GetAudioBuf; 233 impl->GetAudioBuf = COREAUDIO_GetAudioBuf;
218 impl->CloseAudio = COREAUDIO_CloseAudio; 234 impl->CloseAudio = COREAUDIO_CloseAudio;
225 "coreaudio", "Mac OS X CoreAudio", 241 "coreaudio", "Mac OS X CoreAudio",
226 COREAUDIO_Available, COREAUDIO_Init 242 COREAUDIO_Available, COREAUDIO_Init
227 }; 243 };
228 244
229 245
246 static int
247 COREAUDIO_DetectDevices(int iscapture)
248 {
249 if (iscapture) {
250 build_device_list(1, &inputDevices, &inputDeviceCount);
251 return inputDeviceCount;
252 } else {
253 build_device_list(0, &outputDevices, &outputDeviceCount);
254 return outputDeviceCount;
255 }
256
257 return 0; /* shouldn't ever hit this. */
258 }
259
260
261 static const char *
262 COREAUDIO_GetAudioDevice(int index, int iscapture)
263 {
264 if ((iscapture) && (index < inputDeviceCount)) {
265 return inputDevices[index].name;
266 } else if ((!iscapture) && (index < outputDeviceCount)) {
267 return outputDevices[index].name;
268 }
269
270 SDL_SetError("No such device");
271 return NULL;
272 }
273
274
230 static void 275 static void
231 COREAUDIO_Deinitialize(void) 276 COREAUDIO_Deinitialize(void)
232 { 277 {
233 free_device_list(&outputDevices, &outputDeviceCount); 278 free_device_lists();
234 free_device_list(&inputDevices, &inputDeviceCount);
235 } 279 }
236 280
237 281
238 /* The CoreAudio callback */ 282 /* The CoreAudio callback */
239 static OSStatus 283 static OSStatus