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comparison src/audio/mint/SDL_mintaudio_mcsn.c @ 1111:12c49532be00

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Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
author Patrice Mandin <patmandin@gmail.com>
date Wed, 10 Aug 2005 13:29:49 +0000
parents 856f76a099c7
children 3692456e7b0f
comparison
equal deleted inserted replaced
1110:b6fdf299a2f3 1111:12c49532be00
28 */ 28 */
29 29
30 #include <stdlib.h> 30 #include <stdlib.h>
31 #include <stdio.h> 31 #include <stdio.h>
32 #include <string.h> 32 #include <string.h>
33 #include <support.h>
33 34
34 /* Mint includes */ 35 /* Mint includes */
35 #include <mint/osbind.h> 36 #include <mint/osbind.h>
36 #include <mint/falcon.h> 37 #include <mint/falcon.h>
37 #include <mint/cookie.h> 38 #include <mint/cookie.h>
83 static int Audio_Available(void) 84 static int Audio_Available(void)
84 { 85 {
85 unsigned long dummy; 86 unsigned long dummy;
86 const char *envr = getenv("SDL_AUDIODRIVER"); 87 const char *envr = getenv("SDL_AUDIODRIVER");
87 88
88 /* We can't use XBIOS in interrupt under MiNT */ 89 SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
89 if (Getcookie(C_MiNT, &dummy) == C_FOUND) { 90
90 return(0); 91 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
91 }
92
93 /* nor with Magic */
94 if (Getcookie(C_MagX, &dummy) == C_FOUND) { 92 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
95 return(0); 93 return(0);
96 } 94 }
97 95
98 /* Check if user asked a different audio driver */ 96 /* Check if user asked a different audio driver */
195 } 193 }
196 194
197 static void Mint_CloseAudio(_THIS) 195 static void Mint_CloseAudio(_THIS)
198 { 196 {
199 /* Stop replay */ 197 /* Stop replay */
198 SDL_MintAudio_WaitThread();
200 Buffoper(0); 199 Buffoper(0);
201 200
202 /* Uninstall interrupt */ 201 if (!SDL_MintAudio_mint_present) {
203 Jdisint(MFP_DMASOUND); 202 /* Uninstall interrupt */
203 Jdisint(MFP_DMASOUND);
204 }
204 205
205 /* Wait if currently playing sound */ 206 /* Wait if currently playing sound */
206 while (SDL_MintAudio_mutex != 0) { 207 while (SDL_MintAudio_mutex != 0) {
207 } 208 }
208 209
296 { 297 {
297 int channels_mode, prediv, dmaclock; 298 int channels_mode, prediv, dmaclock;
298 void *buffer; 299 void *buffer;
299 300
300 /* Stop currently playing sound */ 301 /* Stop currently playing sound */
302 SDL_MintAudio_quit_thread = SDL_FALSE;
303 SDL_MintAudio_thread_finished = SDL_TRUE;
304 SDL_MintAudio_WaitThread();
301 Buffoper(0); 305 Buffoper(0);
302 306
303 /* Set replay tracks */ 307 /* Set replay tracks */
304 Settracks(0,0); 308 Settracks(0,0);
305 Setmontracks(0); 309 Setmontracks(0);
337 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; 341 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
338 if (Setbuffer(0, buffer, buffer + spec->size)<0) { 342 if (Setbuffer(0, buffer, buffer + spec->size)<0) {
339 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); 343 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
340 } 344 }
341 345
342 /* Install interrupt */ 346 if (SDL_MintAudio_mint_present) {
343 Jdisint(MFP_DMASOUND); 347 SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
344 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); 348 } else {
345 Jenabint(MFP_DMASOUND); 349 /* Install interrupt */
346 350 Jdisint(MFP_DMASOUND);
347 if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { 351 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);
348 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); 352 Jenabint(MFP_DMASOUND);
353
354 if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) {
355 DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
356 }
349 } 357 }
350 358
351 /* Go */ 359 /* Go */
352 Buffoper(SB_PLA_ENA|SB_PLA_RPT); 360 Buffoper(SB_PLA_ENA|SB_PLA_RPT);
353 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); 361 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
388 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); 396 DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
389 397
390 /* Setup audio hardware */ 398 /* Setup audio hardware */
391 Mint_InitAudio(this, spec); 399 Mint_InitAudio(this, spec);
392 400
393 return(1); /* We don't use threaded audio */ 401 return(1); /* We don't use SDL threaded audio */
394 } 402 }