Mercurial > sdl-ios-xcode

comparison src/audio/mint/SDL_mintaudio_dma8.c @ 2060:866052b01ee5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
indent is evil
author Sam Lantinga <slouken@libsdl.org>
date Sat, 28 Oct 2006 16:48:03 +0000
parents 5f6550e5184f
children 29e07f91bc1f
comparison
equal deleted inserted replaced
2059:4685ccd33d0e 2060:866052b01ee5
99 Jdisint(MFP_DMASOUND); 99 Jdisint(MFP_DMASOUND);
100 100
101 DEBUG_PRINT((DEBUG_NAME "closeaudio: interrupt disabled\n")); 101 DEBUG_PRINT((DEBUG_NAME "closeaudio: interrupt disabled\n"));
102 102
103 /* Wait if currently playing sound */ 103 /* Wait if currently playing sound */
104 while (SDL_MintAudio_mutex != 0) {} 104 while (SDL_MintAudio_mutex != 0) {
105 }
105 106
106 DEBUG_PRINT((DEBUG_NAME "closeaudio: no more interrupt running\n")); 107 DEBUG_PRINT((DEBUG_NAME "closeaudio: no more interrupt running\n"));
107 108
108 /* Clear buffers */ 109 /* Clear buffers */
109 if (SDL_MintAudio_audiobuf[0]) { 110 if (SDL_MintAudio_audiobuf[0]) {
125 126
126 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ", 127 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",
127 SDL_AUDIO_BITSIZE(this->spec.format))); 128 SDL_AUDIO_BITSIZE(this->spec.format)));
128 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format))); 129 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
129 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format))); 130 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
130 DEBUG_PRINT(("big endian=%d, ", SDL_AUDIO_ISBIGENDIAN(this->spec.format))); 131 DEBUG_PRINT(("big endian=%d, ",
132 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
131 DEBUG_PRINT(("channels=%d, ", this->spec.channels)); 133 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
132 DEBUG_PRINT(("freq=%d\n", this->spec.freq)); 134 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
133 135
134 if (this->spec.channels > 2) { 136 if (this->spec.channels > 2) {
135 this->spec.channels = 2; /* no more than stereo! */ 137 this->spec.channels = 2; /* no more than stereo! */
136 } 138 }
137 139
138 /* Check formats available */ 140 /* Check formats available */
139 this->spec.format = AUDIO_S8; 141 this->spec.format = AUDIO_S8;
140 142
182 184
183 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ", 185 DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",
184 SDL_AUDIO_BITSIZE(this->spec.format))); 186 SDL_AUDIO_BITSIZE(this->spec.format)));
185 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format))); 187 DEBUG_PRINT(("float=%d, ", SDL_AUDIO_ISFLOAT(this->spec.format)));
186 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format))); 188 DEBUG_PRINT(("signed=%d, ", SDL_AUDIO_ISSIGNED(this->spec.format)));
187 DEBUG_PRINT(("big endian=%d, ", SDL_AUDIO_ISBIGENDIAN(this->spec.format))); 189 DEBUG_PRINT(("big endian=%d, ",
190 SDL_AUDIO_ISBIGENDIAN(this->spec.format)));
188 DEBUG_PRINT(("channels=%d, ", this->spec.channels)); 191 DEBUG_PRINT(("channels=%d, ", this->spec.channels));
189 DEBUG_PRINT(("freq=%d\n", this->spec.freq)); 192 DEBUG_PRINT(("freq=%d\n", this->spec.freq));
190 193
191 return 0; 194 return 0;
192 } 195 }
253 return 0; 256 return 0;
254 } 257 }
255 258
256 /* Initialize all variables that we clean on shutdown */ 259 /* Initialize all variables that we clean on shutdown */
257 this->hidden = (struct SDL_PrivateAudioData *) 260 this->hidden = (struct SDL_PrivateAudioData *)
258 SDL_malloc((sizeof *this->hidden)); 261 SDL_malloc((sizeof *this->hidden));
259 if (this->hidden == NULL) { 262 if (this->hidden == NULL) {
260 SDL_OutOfMemory(); 263 SDL_OutOfMemory();
261 return 0; 264 return 0;
262 } 265 }
263 SDL_memset(this->hidden, 0, (sizeof *this->hidden)); 266 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
265 SDL_CalculateAudioSpec(&this->spec); 268 SDL_CalculateAudioSpec(&this->spec);
266 269
267 /* Allocate memory for audio buffers in DMA-able RAM */ 270 /* Allocate memory for audio buffers in DMA-able RAM */
268 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", this->spec.size)); 271 DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", this->spec.size));
269 272
270 SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(this->spec.size * 2, MX_STRAM); 273 SDL_MintAudio_audiobuf[0] =
274 Atari_SysMalloc(this->spec.size * 2, MX_STRAM);
271 if (SDL_MintAudio_audiobuf[0] == NULL) { 275 if (SDL_MintAudio_audiobuf[0] == NULL) {
272 SDL_free(this->hidden); 276 SDL_free(this->hidden);
273 this->hidden = NULL; 277 this->hidden = NULL;
274 SDL_OutOfMemory(); 278 SDL_OutOfMemory();
275 return 0; 279 return 0;
276 } 280 }
277 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + this->spec.size; 281 SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + this->spec.size;
278 SDL_MintAudio_numbuf = 0; 282 SDL_MintAudio_numbuf = 0;
279 SDL_memset(SDL_MintAudio_audiobuf[0],this->spec.silence,this->spec.size*2); 283 SDL_memset(SDL_MintAudio_audiobuf[0], this->spec.silence,
284 this->spec.size * 2);
280 SDL_MintAudio_audiosize = this->spec.size; 285 SDL_MintAudio_audiosize = this->spec.size;
281 SDL_MintAudio_mutex = 0; 286 SDL_MintAudio_mutex = 0;
282 287
283 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", 288 DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n",
284 SDL_MintAudio_audiobuf[0])); 289 SDL_MintAudio_audiobuf[0]));
288 SDL_MintAudio_CheckFpu(); 293 SDL_MintAudio_CheckFpu();
289 294
290 /* Setup audio hardware */ 295 /* Setup audio hardware */
291 MINTDMA8_InitAudio(this); 296 MINTDMA8_InitAudio(this);
292 297
293 return 1; /* good to go. */ 298 return 1; /* good to go. */
294 } 299 }
295 300
296 static int 301 static int
297 MINTDMA8_Init(SDL_AudioDriverImpl *impl) 302 MINTDMA8_Init(SDL_AudioDriverImpl * impl)
298 { 303 {
299 /* Cookie _MCH present ? if not, assume ST machine */ 304 /* Cookie _MCH present ? if not, assume ST machine */
300 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { 305 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
301 cookie_mch = MCH_ST; 306 cookie_mch = MCH_ST;
302 } 307 }