Mercurial > sdl-ios-xcode
comparison src/audio/amigaos/SDL_ahiaudio.c @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 28 May 2006 13:04:16 +0000 |
parents | d910939febfa |
children | 4da1ee79c9af |
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1661:281d3f4870e5 | 1662:782fd950bd46 |
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26 #include "SDL_audio.h" | 26 #include "SDL_audio.h" |
27 #include "../SDL_audio_c.h" | 27 #include "../SDL_audio_c.h" |
28 #include "SDL_ahiaudio.h" | 28 #include "SDL_ahiaudio.h" |
29 | 29 |
30 /* Audio driver functions */ | 30 /* Audio driver functions */ |
31 static int AHI_OpenAudio(_THIS, SDL_AudioSpec *spec); | 31 static int AHI_OpenAudio (_THIS, SDL_AudioSpec * spec); |
32 static void AHI_WaitAudio(_THIS); | 32 static void AHI_WaitAudio (_THIS); |
33 static void AHI_PlayAudio(_THIS); | 33 static void AHI_PlayAudio (_THIS); |
34 static Uint8 *AHI_GetAudioBuf(_THIS); | 34 static Uint8 *AHI_GetAudioBuf (_THIS); |
35 static void AHI_CloseAudio(_THIS); | 35 static void AHI_CloseAudio (_THIS); |
36 | 36 |
37 #ifndef __SASC | 37 #ifndef __SASC |
38 #define mymalloc(x) AllocVec(x,MEMF_PUBLIC) | 38 #define mymalloc(x) AllocVec(x,MEMF_PUBLIC) |
39 #define myfree FreeVec | 39 #define myfree FreeVec |
40 #else | 40 #else |
41 #define mymalloc malloc | 41 #define mymalloc malloc |
42 #define myfree free | 42 #define myfree free |
43 #endif | 43 #endif |
44 | 44 |
45 /* Audio driver bootstrap functions */ | 45 /* Audio driver bootstrap functions */ |
46 | 46 |
47 static int Audio_Available(void) | 47 static int |
48 { | 48 Audio_Available (void) |
49 int ok=0; | 49 { |
50 struct MsgPort *p; | 50 int ok = 0; |
51 struct AHIRequest *req; | 51 struct MsgPort *p; |
52 | 52 struct AHIRequest *req; |
53 if(p=CreateMsgPort()) | 53 |
54 { | 54 if (p = CreateMsgPort ()) { |
55 if(req=(struct AHIRequest *)CreateIORequest(p,sizeof(struct AHIRequest))) | 55 if (req = |
56 { | 56 (struct AHIRequest *) CreateIORequest (p, |
57 req->ahir_Version=4; | 57 sizeof (struct |
58 | 58 AHIRequest))) { |
59 if(!OpenDevice(AHINAME,0,(struct IORequest *)req,NULL)) | 59 req->ahir_Version = 4; |
60 { | 60 |
61 D(bug("AHI available.\n")); | 61 if (!OpenDevice (AHINAME, 0, (struct IORequest *) req, NULL)) { |
62 ok=1; | 62 D (bug ("AHI available.\n")); |
63 CloseDevice((struct IORequest *)req); | 63 ok = 1; |
64 } | 64 CloseDevice ((struct IORequest *) req); |
65 DeleteIORequest((struct IORequest *)req); | 65 } |
66 } | 66 DeleteIORequest ((struct IORequest *) req); |
67 DeleteMsgPort(p); | 67 } |
68 } | 68 DeleteMsgPort (p); |
69 | 69 } |
70 D(if(!ok) bug("AHI not available\n")); | 70 |
71 return ok; | 71 D (if (!ok) bug ("AHI not available\n")); |
72 } | 72 return ok; |
73 | 73 } |
74 static void Audio_DeleteDevice(SDL_AudioDevice *device) | 74 |
75 { | 75 static void |
76 SDL_free(device->hidden); | 76 Audio_DeleteDevice (SDL_AudioDevice * device) |
77 SDL_free(device); | 77 { |
78 } | 78 SDL_free (device->hidden); |
79 | 79 SDL_free (device); |
80 static SDL_AudioDevice *Audio_CreateDevice(int devindex) | 80 } |
81 { | 81 |
82 SDL_AudioDevice *this; | 82 static SDL_AudioDevice * |
83 Audio_CreateDevice (int devindex) | |
84 { | |
85 SDL_AudioDevice *this; | |
83 | 86 |
84 #ifndef NO_AMIGADEBUG | 87 #ifndef NO_AMIGADEBUG |
85 D(bug("AHI created...\n")); | 88 D (bug ("AHI created...\n")); |
86 #endif | 89 #endif |
87 | 90 |
88 /* Initialize all variables that we clean on shutdown */ | 91 /* Initialize all variables that we clean on shutdown */ |
89 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); | 92 this = (SDL_AudioDevice *) SDL_malloc (sizeof (SDL_AudioDevice)); |
90 if ( this ) { | 93 if (this) { |
91 SDL_memset(this, 0, (sizeof *this)); | 94 SDL_memset (this, 0, (sizeof *this)); |
92 this->hidden = (struct SDL_PrivateAudioData *) | 95 this->hidden = (struct SDL_PrivateAudioData *) |
93 SDL_malloc((sizeof *this->hidden)); | 96 SDL_malloc ((sizeof *this->hidden)); |
94 } | 97 } |
95 if ( (this == NULL) || (this->hidden == NULL) ) { | 98 if ((this == NULL) || (this->hidden == NULL)) { |
96 SDL_OutOfMemory(); | 99 SDL_OutOfMemory (); |
97 if ( this ) { | 100 if (this) { |
98 SDL_free(this); | 101 SDL_free (this); |
99 } | 102 } |
100 return(0); | 103 return (0); |
101 } | 104 } |
102 SDL_memset(this->hidden, 0, (sizeof *this->hidden)); | 105 SDL_memset (this->hidden, 0, (sizeof *this->hidden)); |
103 | 106 |
104 /* Set the function pointers */ | 107 /* Set the function pointers */ |
105 this->OpenAudio = AHI_OpenAudio; | 108 this->OpenAudio = AHI_OpenAudio; |
106 this->WaitAudio = AHI_WaitAudio; | 109 this->WaitAudio = AHI_WaitAudio; |
107 this->PlayAudio = AHI_PlayAudio; | 110 this->PlayAudio = AHI_PlayAudio; |
108 this->GetAudioBuf = AHI_GetAudioBuf; | 111 this->GetAudioBuf = AHI_GetAudioBuf; |
109 this->CloseAudio = AHI_CloseAudio; | 112 this->CloseAudio = AHI_CloseAudio; |
110 | 113 |
111 this->free = Audio_DeleteDevice; | 114 this->free = Audio_DeleteDevice; |
112 | 115 |
113 return this; | 116 return this; |
114 } | 117 } |
115 | 118 |
116 AudioBootStrap AHI_bootstrap = { | 119 AudioBootStrap AHI_bootstrap = { |
117 "AHI", Audio_Available, Audio_CreateDevice | 120 "AHI", Audio_Available, Audio_CreateDevice |
118 }; | 121 }; |
119 | 122 |
120 | 123 |
121 void static AHI_WaitAudio(_THIS) | 124 void static |
122 { | 125 AHI_WaitAudio (_THIS) |
123 if(!CheckIO((struct IORequest *)audio_req[current_buffer])) | 126 { |
124 { | 127 if (!CheckIO ((struct IORequest *) audio_req[current_buffer])) { |
125 WaitIO((struct IORequest *)audio_req[current_buffer]); | 128 WaitIO ((struct IORequest *) audio_req[current_buffer]); |
126 // AbortIO((struct IORequest *)audio_req[current_buffer]); | 129 // AbortIO((struct IORequest *)audio_req[current_buffer]); |
127 } | 130 } |
128 } | 131 } |
129 | 132 |
130 static void AHI_PlayAudio(_THIS) | 133 static void |
131 { | 134 AHI_PlayAudio (_THIS) |
132 if(playing>1) | 135 { |
133 WaitIO((struct IORequest *)audio_req[current_buffer]); | 136 if (playing > 1) |
134 | 137 WaitIO ((struct IORequest *) audio_req[current_buffer]); |
135 /* Write the audio data out */ | 138 |
136 audio_req[current_buffer] -> ahir_Std. io_Message.mn_Node.ln_Pri = 60; | 139 /* Write the audio data out */ |
137 audio_req[current_buffer] -> ahir_Std. io_Data = mixbuf[current_buffer]; | 140 audio_req[current_buffer]->ahir_Std.io_Message.mn_Node.ln_Pri = 60; |
138 audio_req[current_buffer] -> ahir_Std. io_Length = this->hidden->size; | 141 audio_req[current_buffer]->ahir_Std.io_Data = mixbuf[current_buffer]; |
139 audio_req[current_buffer] -> ahir_Std. io_Offset = 0; | 142 audio_req[current_buffer]->ahir_Std.io_Length = this->hidden->size; |
140 audio_req[current_buffer] -> ahir_Std . io_Command = CMD_WRITE; | 143 audio_req[current_buffer]->ahir_Std.io_Offset = 0; |
141 audio_req[current_buffer] -> ahir_Frequency = this->hidden->freq; | 144 audio_req[current_buffer]->ahir_Std.io_Command = CMD_WRITE; |
142 audio_req[current_buffer] -> ahir_Volume = 0x10000; | 145 audio_req[current_buffer]->ahir_Frequency = this->hidden->freq; |
143 audio_req[current_buffer] -> ahir_Type = this->hidden->type; | 146 audio_req[current_buffer]->ahir_Volume = 0x10000; |
144 audio_req[current_buffer] -> ahir_Position = 0x8000; | 147 audio_req[current_buffer]->ahir_Type = this->hidden->type; |
145 audio_req[current_buffer] -> ahir_Link = (playing>0 ? audio_req[current_buffer^1] : NULL); | 148 audio_req[current_buffer]->ahir_Position = 0x8000; |
146 | 149 audio_req[current_buffer]->ahir_Link = |
147 SendIO((struct IORequest *)audio_req[current_buffer]); | 150 (playing > 0 ? audio_req[current_buffer ^ 1] : NULL); |
148 current_buffer^=1; | 151 |
149 | 152 SendIO ((struct IORequest *) audio_req[current_buffer]); |
150 playing++; | 153 current_buffer ^= 1; |
151 } | 154 |
152 | 155 playing++; |
153 static Uint8 *AHI_GetAudioBuf(_THIS) | 156 } |
154 { | 157 |
155 return(mixbuf[current_buffer]); | 158 static Uint8 * |
156 } | 159 AHI_GetAudioBuf (_THIS) |
157 | 160 { |
158 static void AHI_CloseAudio(_THIS) | 161 return (mixbuf[current_buffer]); |
159 { | 162 } |
160 D(bug("Closing audio...\n")); | 163 |
161 | 164 static void |
162 playing=0; | 165 AHI_CloseAudio (_THIS) |
163 | 166 { |
164 if(audio_req[0]) | 167 D (bug ("Closing audio...\n")); |
165 { | 168 |
166 if(audio_req[1]) | 169 playing = 0; |
167 { | 170 |
168 D(bug("Break req[1]...\n")); | 171 if (audio_req[0]) { |
169 | 172 if (audio_req[1]) { |
170 AbortIO((struct IORequest *)audio_req[1]); | 173 D (bug ("Break req[1]...\n")); |
171 WaitIO((struct IORequest *)audio_req[1]); | 174 |
172 } | 175 AbortIO ((struct IORequest *) audio_req[1]); |
173 | 176 WaitIO ((struct IORequest *) audio_req[1]); |
174 D(bug("Break req[0]...\n")); | 177 } |
175 | 178 |
176 AbortIO((struct IORequest *)audio_req[0]); | 179 D (bug ("Break req[0]...\n")); |
177 WaitIO((struct IORequest *)audio_req[0]); | 180 |
178 | 181 AbortIO ((struct IORequest *) audio_req[0]); |
179 if(audio_req[1]) | 182 WaitIO ((struct IORequest *) audio_req[0]); |
180 { | 183 |
181 D(bug("Break AGAIN req[1]...\n")); | 184 if (audio_req[1]) { |
182 AbortIO((struct IORequest *)audio_req[1]); | 185 D (bug ("Break AGAIN req[1]...\n")); |
183 WaitIO((struct IORequest *)audio_req[1]); | 186 AbortIO ((struct IORequest *) audio_req[1]); |
184 } | 187 WaitIO ((struct IORequest *) audio_req[1]); |
188 } | |
185 // Double abort to be sure to break the dbuffering process. | 189 // Double abort to be sure to break the dbuffering process. |
186 | 190 |
187 SDL_Delay(200); | 191 SDL_Delay (200); |
188 | 192 |
189 D(bug("Reqs breaked, closing device...\n")); | 193 D (bug ("Reqs breaked, closing device...\n")); |
190 CloseDevice((struct IORequest *)audio_req[0]); | 194 CloseDevice ((struct IORequest *) audio_req[0]); |
191 D(bug("Device closed, freeing memory...\n")); | 195 D (bug ("Device closed, freeing memory...\n")); |
192 myfree(audio_req[1]); | 196 myfree (audio_req[1]); |
193 D(bug("Memory freed, deleting IOReq...\n")); | 197 D (bug ("Memory freed, deleting IOReq...\n")); |
194 DeleteIORequest((struct IORequest *)audio_req[0]); | 198 DeleteIORequest ((struct IORequest *) audio_req[0]); |
195 audio_req[0]=audio_req[1]=NULL; | 199 audio_req[0] = audio_req[1] = NULL; |
196 } | 200 } |
197 | 201 |
198 D(bug("Freeing mixbuf[0]...\n")); | 202 D (bug ("Freeing mixbuf[0]...\n")); |
199 if ( mixbuf[0] != NULL ) { | 203 if (mixbuf[0] != NULL) { |
200 myfree(mixbuf[0]); | 204 myfree (mixbuf[0]); |
201 // SDL_FreeAudioMem(mixbuf[0]); | 205 // SDL_FreeAudioMem(mixbuf[0]); |
202 mixbuf[0] = NULL; | 206 mixbuf[0] = NULL; |
203 } | 207 } |
204 | 208 |
205 D(bug("Freeing mixbuf[1]...\n")); | 209 D (bug ("Freeing mixbuf[1]...\n")); |
206 if ( mixbuf[1] != NULL ) { | 210 if (mixbuf[1] != NULL) { |
207 myfree(mixbuf[1]); | 211 myfree (mixbuf[1]); |
208 // SDL_FreeAudioMem(mixbuf[1]); | 212 // SDL_FreeAudioMem(mixbuf[1]); |
209 mixbuf[1] = NULL; | 213 mixbuf[1] = NULL; |
210 } | 214 } |
211 | 215 |
212 D(bug("Freeing audio_port...\n")); | 216 D (bug ("Freeing audio_port...\n")); |
213 | 217 |
214 if ( audio_port != NULL ) { | 218 if (audio_port != NULL) { |
215 DeleteMsgPort(audio_port); | 219 DeleteMsgPort (audio_port); |
216 audio_port = NULL; | 220 audio_port = NULL; |
217 } | 221 } |
218 D(bug("...done!\n")); | 222 D (bug ("...done!\n")); |
219 } | 223 } |
220 | 224 |
221 static int AHI_OpenAudio(_THIS, SDL_AudioSpec *spec) | 225 static int |
222 { | 226 AHI_OpenAudio (_THIS, SDL_AudioSpec * spec) |
223 // int width; | 227 { |
224 | 228 // int width; |
225 D(bug("AHI opening...\n")); | 229 |
226 | 230 D (bug ("AHI opening...\n")); |
227 /* Determine the audio parameters from the AudioSpec */ | 231 |
228 switch ( spec->format & 0xFF ) { | 232 /* Determine the audio parameters from the AudioSpec */ |
229 | 233 switch (spec->format & 0xFF) { |
230 case 8: { /* Signed 8 bit audio data */ | 234 |
231 D(bug("Samples a 8 bit...\n")); | 235 case 8: |
232 spec->format = AUDIO_S8; | 236 { /* Signed 8 bit audio data */ |
233 this->hidden->bytespersample=1; | 237 D (bug ("Samples a 8 bit...\n")); |
234 if(spec->channels<2) | 238 spec->format = AUDIO_S8; |
235 this->hidden->type = AHIST_M8S; | 239 this->hidden->bytespersample = 1; |
236 else | 240 if (spec->channels < 2) |
237 this->hidden->type = AHIST_S8S; | 241 this->hidden->type = AHIST_M8S; |
238 } | 242 else |
239 break; | 243 this->hidden->type = AHIST_S8S; |
240 | 244 } |
241 case 16: { /* Signed 16 bit audio data */ | 245 break; |
242 D(bug("Samples a 16 bit...\n")); | 246 |
243 spec->format = AUDIO_S16MSB; | 247 case 16: |
244 this->hidden->bytespersample=2; | 248 { /* Signed 16 bit audio data */ |
245 if(spec->channels<2) | 249 D (bug ("Samples a 16 bit...\n")); |
246 this->hidden->type = AHIST_M16S; | 250 spec->format = AUDIO_S16MSB; |
247 else | 251 this->hidden->bytespersample = 2; |
248 this->hidden->type = AHIST_S16S; | 252 if (spec->channels < 2) |
249 } | 253 this->hidden->type = AHIST_M16S; |
250 break; | 254 else |
251 | 255 this->hidden->type = AHIST_S16S; |
252 default: { | 256 } |
253 SDL_SetError("Unsupported audio format"); | 257 break; |
254 return(-1); | 258 |
255 } | 259 default: |
256 } | 260 { |
257 | 261 SDL_SetError ("Unsupported audio format"); |
258 if(spec->channels!=1 && spec->channels!=2) | 262 return (-1); |
259 { | 263 } |
260 D(bug("Wrong channel number!\n")); | 264 } |
261 SDL_SetError("Channel number non supported"); | 265 |
262 return -1; | 266 if (spec->channels != 1 && spec->channels != 2) { |
263 } | 267 D (bug ("Wrong channel number!\n")); |
264 | 268 SDL_SetError ("Channel number non supported"); |
265 D(bug("Before CalculateAudioSpec\n")); | 269 return -1; |
266 /* Update the fragment size as size in bytes */ | 270 } |
267 SDL_CalculateAudioSpec(spec); | 271 |
268 | 272 D (bug ("Before CalculateAudioSpec\n")); |
269 D(bug("Before CreateMsgPort\n")); | 273 /* Update the fragment size as size in bytes */ |
270 | 274 SDL_CalculateAudioSpec (spec); |
271 if(!(audio_port=CreateMsgPort())) | 275 |
272 { | 276 D (bug ("Before CreateMsgPort\n")); |
273 SDL_SetError("Unable to create a MsgPort"); | 277 |
274 return -1; | 278 if (!(audio_port = CreateMsgPort ())) { |
275 } | 279 SDL_SetError ("Unable to create a MsgPort"); |
276 | 280 return -1; |
277 D(bug("Before CreateIORequest\n")); | 281 } |
278 | 282 |
279 if(!(audio_req[0]=(struct AHIRequest *)CreateIORequest(audio_port,sizeof(struct AHIRequest)))) | 283 D (bug ("Before CreateIORequest\n")); |
280 { | 284 |
281 SDL_SetError("Unable to create an AHIRequest"); | 285 if (! |
282 DeleteMsgPort(audio_port); | 286 (audio_req[0] = |
283 return -1; | 287 (struct AHIRequest *) CreateIORequest (audio_port, |
284 } | 288 sizeof (struct AHIRequest)))) |
285 | 289 { |
286 audio_req[0]->ahir_Version = 4; | 290 SDL_SetError ("Unable to create an AHIRequest"); |
287 | 291 DeleteMsgPort (audio_port); |
288 if(OpenDevice(AHINAME,0,(struct IORequest *)audio_req[0],NULL)) | 292 return -1; |
289 { | 293 } |
290 SDL_SetError("Unable to open AHI device!\n"); | 294 |
291 DeleteIORequest((struct IORequest *)audio_req[0]); | 295 audio_req[0]->ahir_Version = 4; |
292 DeleteMsgPort(audio_port); | 296 |
293 return -1; | 297 if (OpenDevice (AHINAME, 0, (struct IORequest *) audio_req[0], NULL)) { |
294 } | 298 SDL_SetError ("Unable to open AHI device!\n"); |
295 | 299 DeleteIORequest ((struct IORequest *) audio_req[0]); |
296 D(bug("AFTER opendevice\n")); | 300 DeleteMsgPort (audio_port); |
297 | 301 return -1; |
298 /* Set output frequency and size */ | 302 } |
299 this->hidden->freq = spec->freq; | 303 |
300 this->hidden->size = spec->size; | 304 D (bug ("AFTER opendevice\n")); |
301 | 305 |
302 D(bug("Before buffer allocation\n")); | 306 /* Set output frequency and size */ |
303 | 307 this->hidden->freq = spec->freq; |
304 /* Allocate mixing buffer */ | 308 this->hidden->size = spec->size; |
305 mixbuf[0] = (Uint8 *)mymalloc(spec->size); | 309 |
306 mixbuf[1] = (Uint8 *)mymalloc(spec->size); | 310 D (bug ("Before buffer allocation\n")); |
307 | 311 |
308 D(bug("Before audio_req allocation\n")); | 312 /* Allocate mixing buffer */ |
309 | 313 mixbuf[0] = (Uint8 *) mymalloc (spec->size); |
310 if(!(audio_req[1]=mymalloc(sizeof(struct AHIRequest)))) | 314 mixbuf[1] = (Uint8 *) mymalloc (spec->size); |
311 { | 315 |
312 SDL_OutOfMemory(); | 316 D (bug ("Before audio_req allocation\n")); |
313 return(-1); | 317 |
314 } | 318 if (!(audio_req[1] = mymalloc (sizeof (struct AHIRequest)))) { |
315 | 319 SDL_OutOfMemory (); |
316 D(bug("Before audio_req memcpy\n")); | 320 return (-1); |
317 | 321 } |
318 SDL_memcpy(audio_req[1],audio_req[0],sizeof(struct AHIRequest)); | 322 |
319 | 323 D (bug ("Before audio_req memcpy\n")); |
320 if ( mixbuf[0] == NULL || mixbuf[1] == NULL ) { | 324 |
321 SDL_OutOfMemory(); | 325 SDL_memcpy (audio_req[1], audio_req[0], sizeof (struct AHIRequest)); |
322 return(-1); | 326 |
323 } | 327 if (mixbuf[0] == NULL || mixbuf[1] == NULL) { |
324 | 328 SDL_OutOfMemory (); |
325 D(bug("Before mixbuf memset\n")); | 329 return (-1); |
326 | 330 } |
327 SDL_memset(mixbuf[0], spec->silence, spec->size); | 331 |
328 SDL_memset(mixbuf[1], spec->silence, spec->size); | 332 D (bug ("Before mixbuf memset\n")); |
329 | 333 |
330 current_buffer=0; | 334 SDL_memset (mixbuf[0], spec->silence, spec->size); |
331 playing=0; | 335 SDL_memset (mixbuf[1], spec->silence, spec->size); |
332 | 336 |
333 D(bug("AHI opened: freq:%ld mixbuf:%lx/%lx buflen:%ld bits:%ld channels:%ld\n",spec->freq,mixbuf[0],mixbuf[1],spec->size,this->hidden->bytespersample*8,spec->channels)); | 337 current_buffer = 0; |
334 | 338 playing = 0; |
335 /* We're ready to rock and roll. :-) */ | 339 |
336 return(0); | 340 D (bug |
337 } | 341 ("AHI opened: freq:%ld mixbuf:%lx/%lx buflen:%ld bits:%ld channels:%ld\n", |
342 spec->freq, mixbuf[0], mixbuf[1], spec->size, | |
343 this->hidden->bytespersample * 8, spec->channels)); | |
344 | |
345 /* We're ready to rock and roll. :-) */ | |
346 return (0); | |
347 } | |
348 | |
349 /* vi: set ts=4 sw=4 expandtab: */ |