Mercurial > almixer_isolated
comparison SDL_ALmixer.c @ 0:01e39f9f58d5
Bitkeeper era.
author | Eric Wing <ewing . public |-at-| gmail . com> |
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date | Wed, 27 Oct 2010 16:50:19 -0700 |
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children | a8a8fe374984 |
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1 | |
2 /* Here's an OpenAL implementation modeled after | |
3 * the SDL_SoundMixer which was built ontop of SDL_Mixer | |
4 * and SDL_Sound. | |
5 * Eric Wing | |
6 */ | |
7 | |
8 #include "SDL_ALmixer.h" | |
9 | |
10 #include "SDL.h" /* For SDL_GetTicks(), SDL_Delay */ | |
11 #include "al.h" /* OpenAL */ | |
12 #include "alc.h" /* For creating OpenAL contexts */ | |
13 | |
14 /* For malloc, bsearch, qsort */ | |
15 #include <stdlib.h> | |
16 | |
17 /* For memcpy */ | |
18 #include <string.h> | |
19 | |
20 #if 0 | |
21 /* for toupper */ | |
22 #include <ctype.h> | |
23 /* for strrchr */ | |
24 #include <string.h> | |
25 #endif | |
26 | |
27 /* Currently used in the output debug functions */ | |
28 #include <stdio.h> | |
29 | |
30 /* My own CircularQueue implementation needed | |
31 * to work around the Nvidia problem of the | |
32 * lack of a buffer query. | |
33 */ | |
34 #include "CircularQueue.h" | |
35 | |
36 /* Needed for the Mutex locks (and threads if enabled) */ | |
37 #include "SDL_thread.h" | |
38 | |
39 /* Because of the API differences between the Loki | |
40 * and Creative distributions, we need to know which | |
41 * version to use. The LOKI distribution currently | |
42 * has AL_BYTE_LOKI defined in altypes.h which | |
43 * I will use as a flag to identify the distributions. | |
44 * If this is ever removed, I might revert back to the | |
45 * if defined(_WIN32) or defined(__APPLE__) test to | |
46 * identify the Creative dist. | |
47 * I'm not sure if or how the Nvidia distribution differs | |
48 * from the Creative distribution. So for | |
49 * now, the Nvidia distribution gets lumped with the | |
50 * Creative dist and I hope nothing will break. | |
51 * My aluGetErrorString may be the most vulnerable. | |
52 */ | |
53 #ifdef AL_BYTE_LOKI | |
54 #define USING_LOKI_AL_DIST | |
55 /* This is a short term fix to get around the | |
56 * queuing problem with non-power of two buffer sizes. | |
57 * Hopefully the maintainers will fix this before | |
58 * we're ready to ship. | |
59 */ | |
60 #define ENABLE_LOKI_QUEUE_FIX_HACK | |
61 | |
62 /* The AL_GAIN in the Loki dist doesn't seem to do | |
63 * what I want/expect it to do. I want to use it for | |
64 * Fading, but it seems to work like an off/on switch. | |
65 * 0 = off, >0 = on. | |
66 * The AL_GAIN_LINEAR_LOKI switch seems to do what | |
67 * I want, so I'll redefine it here so the code is consistent | |
68 */ | |
69 /* Update: I've changed the source volume implementations | |
70 * to use AL_MAX_GAIN, so I don't think I need this block | |
71 * of code anymore. The listener uses AL_GAIN, but I | |
72 * hope they got this one right since there isn't a AL_MAX_GAIN | |
73 * for the listener. | |
74 */ | |
75 /* | |
76 #undef AL_GAIN | |
77 #include "alexttypes.h" | |
78 #define AL_GAIN AL_GAIN_LINEAR_LOKI | |
79 */ | |
80 #else | |
81 /* Might need to run other tests to figure out the DIST */ | |
82 /* I've been told that Nvidia doesn't define constants | |
83 * in the headers like Creative. Instead of | |
84 * #define AL_REFERENCE_DISTANCE 0x1020, | |
85 * Nvidia prefers you query OpenAL for a value. | |
86 * int AL_REFERENCE_DISTANCE = alGetEnumValue(ALubyte*)"AL_REFERNECE_DISTANCE"); | |
87 * So I'm assuming this means the Nvidia lacks this value. | |
88 * If this is the case, | |
89 * I guess we can use it to identify the Nvidia dist | |
90 */ | |
91 #ifdef AL_REFERENCE_DISTANCE | |
92 #define USING_CREATIVE_AL_DIST | |
93 #else | |
94 #define USING_NVIDIA_AL_DIST | |
95 #endif | |
96 #endif | |
97 | |
98 #ifdef ENABLE_LOKI_QUEUE_FIX_HACK | |
99 /* Need memset to zero out data */ | |
100 #include <string.h> | |
101 #endif | |
102 | |
103 | |
104 /* Seek issues for predecoded samples: | |
105 * The problem is that OpenAL makes us copy an | |
106 * entire buffer if we want to use it. This | |
107 * means we potentially have two copies of the | |
108 * same data. For predecoded data, this can be a | |
109 * large amount of memory. However, for seek | |
110 * support, I need to be able to get access to | |
111 * the original data so I can set byte positions. | |
112 * The following flags let you disable seek support | |
113 * if you don't want the memory hit, keep everything, | |
114 * or let you try to minimize the memory wasted by | |
115 * fetching it from the OpenAL buffer if needed | |
116 * and making a copy of it. | |
117 * Update: I don't think I need this flag anymore. I've made the | |
118 * effects of this user customizable by the access_data flag on load. | |
119 * If set to true, then seek and data callbacks work, with the | |
120 * cost of more memory and possibly CPU for copying the data through | |
121 * the callbacks. If false, then the extra memory is freed, but | |
122 * you don't get the features. | |
123 */ | |
124 /* | |
125 #define DISABLE_PREDECODED_SEEK | |
126 */ | |
127 /* Problem: Even though alGetBufferi(., AL_DATA, .) | |
128 * is in the Creative Programmer's reference, | |
129 * it actually isn't in the dist. (Invalid enum | |
130 * in Creative, can't compile in Loki.) | |
131 * So we have to keep it disabled | |
132 */ | |
133 #define DISABLE_SEEK_MEMORY_OPTIMIZATION | |
134 | |
135 #ifndef DISABLE_SEEK_MEMORY_OPTIMIZATION | |
136 /* Needed for memcpy */ | |
137 #include <string.h> | |
138 #endif | |
139 | |
140 /* Old way of doing things: | |
141 #if defined(_WIN32) || defined(__APPLE__) | |
142 #define USING_CREATIVE_AL_DIST | |
143 #else | |
144 #define USING_LOKI_AL_DIST | |
145 #endif | |
146 */ | |
147 | |
148 /************ REMOVE ME (Don't need anymore) ********/ | |
149 #if 0 | |
150 /* Let's get fancy and see if triple buffering | |
151 * does anything good for us | |
152 * Must be 2 or more or things will probably break | |
153 */ | |
154 #define NUMBER_OF_QUEUE_BUFFERS 5 | |
155 /* This is the number of buffers that are queued up | |
156 * when play first starts up. This should be at least 1 | |
157 * and no more than NUMBER_OF_QUEUE_BUFFERS | |
158 */ | |
159 #define NUMBER_OF_START_UP_BUFFERS 2 | |
160 #endif | |
161 /************ END REMOVE ME (Don't need anymore) ********/ | |
162 | |
163 static Uint8 ALmixer_Initialized = 0; | |
164 /* This should be set correctly by Init */ | |
165 static Uint32 ALmixer_Frequency_global = ALMIXER_DEFAULT_FREQUENCY; | |
166 | |
167 /* Will be initialized in Init */ | |
168 static Sint32 Number_of_Channels_global = 0; | |
169 static Sint32 Number_of_Reserve_Channels_global = 0; | |
170 static Uint32 Is_Playing_global = 0; | |
171 | |
172 /* This is for a simple lock system. It is not meant to be good, | |
173 * but just sufficient to minimize/avoid threading issues | |
174 */ | |
175 static SDL_mutex* simple_lock; | |
176 | |
177 #ifdef ENABLE_ALMIXER_THREADS | |
178 static SDL_Thread* Stream_Thread_global = NULL; | |
179 #endif | |
180 | |
181 | |
182 /* If ENABLE_PARANOID_SIGNEDNESS_CHECK is used, | |
183 * these values will be reset on Init() | |
184 * Consider these values Read-Only. | |
185 */ | |
186 | |
187 #define ALMIXER_SIGNED_VALUE 127 | |
188 #define ALMIXER_UNSIGNED_VALUE 255 | |
189 | |
190 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
191 static Uint16 SIGN_TYPE_16_BIT_FORMAT = AUDIO_S16SYS; | |
192 static Uint16 SIGN_TYPE_8_BIT_FORMAT = AUDIO_S8; | |
193 #else | |
194 static const Uint16 SIGN_TYPE_16_BIT_FORMAT = AUDIO_S16SYS; | |
195 static const Uint16 SIGN_TYPE_8_BIT_FORMAT = AUDIO_S8; | |
196 #endif | |
197 | |
198 static struct ALmixer_Channel | |
199 { | |
200 Uint8 channel_in_use; | |
201 Uint8 callback_update; /* For streaming determination */ | |
202 Uint8 needs_stream; /* For streaming determination */ | |
203 Uint8 halted; | |
204 Uint8 paused; | |
205 ALuint alsource; | |
206 ALmixer_Data* almixer_data; | |
207 Sint32 loops; | |
208 Sint32 expire_ticks; | |
209 Uint32 start_time; | |
210 | |
211 Uint8 fade_enabled; | |
212 Uint32 fade_expire_ticks; | |
213 Uint32 fade_start_time; | |
214 ALfloat fade_inv_time; | |
215 ALfloat fade_start_volume; | |
216 ALfloat fade_end_volume; | |
217 ALfloat max_volume; | |
218 ALfloat min_volume; | |
219 | |
220 /* Do we need other flags? | |
221 Uint8 *samples; | |
222 int volume; | |
223 int looping; | |
224 int tag; | |
225 Uint32 expire; | |
226 Uint32 start_time; | |
227 Mix_Fading fading; | |
228 int fade_volume; | |
229 Uint32 fade_length; | |
230 Uint32 ticks_fade; | |
231 effect_info *effects; | |
232 */ | |
233 } *ALmixer_Channel_List = NULL; | |
234 | |
235 /* This will be used to find a channel if the user supplies a source */ | |
236 typedef struct Source_Map | |
237 { | |
238 ALuint source; | |
239 Sint32 channel; | |
240 } Source_Map; | |
241 /* Keep an array of all sources with their associated channel */ | |
242 static Source_Map* Source_Map_List; | |
243 | |
244 static int Compare_Source_Map(const void* a, const void* b) | |
245 { | |
246 return ( ((Source_Map*)a)->source - ((Source_Map*)b)->source ); | |
247 } | |
248 | |
249 /* Sort by channel instead of source */ | |
250 static int Compare_Source_Map_by_channel(const void* a, const void* b) | |
251 { | |
252 return ( ((Source_Map*)a)->channel - ((Source_Map*)b)->channel ); | |
253 } | |
254 | |
255 /* Compare by albuffer */ | |
256 static int Compare_Buffer_Map(const void* a, const void* b) | |
257 { | |
258 return ( ((Buffer_Map*)a)->albuffer - ((Buffer_Map*)b)->albuffer ); | |
259 } | |
260 | |
261 /* This is for the user defined callback via | |
262 * ALmixer_ChannelFinished() | |
263 */ | |
264 static void (*Channel_Done_Callback)(Sint32 channel, void* userdata) = NULL; | |
265 static void* Channel_Done_Callback_Userdata = NULL; | |
266 static void (*Channel_Data_Callback)(Sint32 which_channel, Uint8* data, Uint32 num_bytes, Uint32 frequency, Uint8 channels, Uint8 bitdepth, Uint16 format, Uint8 decode_mode) = NULL; | |
267 | |
268 | |
269 /* I thought OpenAL seemed to lack an error number to string converter... | |
270 * but I was wrong. Apparently they call it alGetString() which | |
271 * breaks from the OpenGL gluGetErrorString() convention. | |
272 * (And since the documentation for OpenAL is so bad, I didn't see | |
273 * it until I had already written my own aluGetErrorString().) | |
274 * So for convenience, I will just call alGetString from here. | |
275 */ | |
276 static const ALubyte* aluGetErrorString(ALenum error) | |
277 { | |
278 return alGetString(error); | |
279 | |
280 #if 0 | |
281 switch(error) | |
282 { | |
283 case AL_NO_ERROR: | |
284 return NULL; | |
285 break; | |
286 case AL_INVALID_NAME: | |
287 return "Invalid name (ID)"; | |
288 break; | |
289 case AL_INVALID_VALUE: | |
290 return "Invalid value"; | |
291 break; | |
292 case AL_OUT_OF_MEMORY: | |
293 return "Out of memory"; | |
294 break; | |
295 /* Damn, even the error values are skewed between distributions */ | |
296 /* For the Creative Labs distributions (don't know about Nvidia) */ | |
297 /* For the Loki based distributions */ | |
298 #ifdef USING_LOKI_AL_DIST | |
299 case AL_ILLEGAL_ENUM: | |
300 return "Invalid enum value"; | |
301 break; | |
302 case AL_ILLEGAL_COMMAND: | |
303 return "Requested operation is not valid"; | |
304 break; | |
305 /* | |
306 #elif USING_CREATIVE_AL_DIST | |
307 */ | |
308 #else | |
309 case AL_INVALID_ENUM: | |
310 return "Invalid enum value"; | |
311 break; | |
312 case AL_INVALID_OPERATION: | |
313 return "Requested operation is not valid"; | |
314 break; | |
315 /* | |
316 #elif USING_NVIDIA_AL_DIST | |
317 */ | |
318 /* | |
319 case alGetEnumValue((ALubyte*)"??????"); | |
320 */ | |
321 #endif | |
322 default: | |
323 return "Unknown error value passed to aluGetErrorString()"; | |
324 break; | |
325 } | |
326 | |
327 /* Make compiler happy */ | |
328 return NULL; | |
329 #endif | |
330 } | |
331 | |
332 | |
333 static void PrintQueueStatus(ALuint source) | |
334 { | |
335 ALint buffers_queued = 0; | |
336 ALint buffers_processed = 0; | |
337 ALenum error; | |
338 | |
339 /* Get the number of buffers still queued */ | |
340 alGetSourcei( | |
341 source, | |
342 AL_BUFFERS_QUEUED, | |
343 &buffers_queued | |
344 ); | |
345 | |
346 if((error = alGetError()) != AL_NO_ERROR) | |
347 { | |
348 fprintf(stderr, "Error in PrintQueueStatus, Can't get buffers_queued: %s\n", | |
349 aluGetErrorString(error)); | |
350 } | |
351 /* Get the number of buffers processed | |
352 * so we know if we need to refill | |
353 */ | |
354 alGetSourcei( | |
355 source, | |
356 AL_BUFFERS_PROCESSED, | |
357 &buffers_processed | |
358 ); | |
359 if((error = alGetError()) != AL_NO_ERROR) | |
360 { | |
361 fprintf(stderr, "Error in PrintQueueStatus, Can't get buffers_processed: %s\n", | |
362 aluGetErrorString(error)); | |
363 } | |
364 | |
365 fprintf(stderr, "For source: %d, buffers_queued=%d, buffers_processed=%d\n", | |
366 source, | |
367 buffers_queued, | |
368 buffers_processed); | |
369 } | |
370 | |
371 | |
372 | |
373 static void Init_Channel(Sint32 channel) | |
374 { | |
375 | |
376 fprintf(stderr, "Init channel %d\n", channel); | |
377 ALmixer_Channel_List[channel].channel_in_use = 0; | |
378 ALmixer_Channel_List[channel].callback_update = 0; | |
379 ALmixer_Channel_List[channel].needs_stream = 0; | |
380 ALmixer_Channel_List[channel].paused = 0; | |
381 ALmixer_Channel_List[channel].halted = 0; | |
382 ALmixer_Channel_List[channel].loops = 0; | |
383 | |
384 ALmixer_Channel_List[channel].expire_ticks = 0; | |
385 ALmixer_Channel_List[channel].start_time = 0; | |
386 | |
387 ALmixer_Channel_List[channel].fade_enabled = 0; | |
388 ALmixer_Channel_List[channel].fade_expire_ticks = 0; | |
389 ALmixer_Channel_List[channel].fade_start_time = 0; | |
390 ALmixer_Channel_List[channel].fade_inv_time = 0.0f; | |
391 ALmixer_Channel_List[channel].fade_start_volume = 0.0f; | |
392 ALmixer_Channel_List[channel].fade_end_volume = 0.0f; | |
393 ALmixer_Channel_List[channel].max_volume = 1.0f; | |
394 ALmixer_Channel_List[channel].min_volume = 0.0f; | |
395 | |
396 ALmixer_Channel_List[channel].almixer_data = NULL; | |
397 } | |
398 /* Quick helper function to clean up a channel | |
399 * after it's done playing */ | |
400 static void Clean_Channel(Sint32 channel) | |
401 { | |
402 ALenum error; | |
403 ALmixer_Channel_List[channel].channel_in_use = 0; | |
404 ALmixer_Channel_List[channel].callback_update = 0; | |
405 ALmixer_Channel_List[channel].needs_stream = 0; | |
406 ALmixer_Channel_List[channel].paused = 0; | |
407 ALmixer_Channel_List[channel].halted = 0; | |
408 ALmixer_Channel_List[channel].loops = 0; | |
409 | |
410 | |
411 ALmixer_Channel_List[channel].expire_ticks = 0; | |
412 ALmixer_Channel_List[channel].start_time = 0; | |
413 | |
414 ALmixer_Channel_List[channel].fade_enabled = 0; | |
415 ALmixer_Channel_List[channel].fade_expire_ticks = 0; | |
416 ALmixer_Channel_List[channel].fade_start_time = 0; | |
417 ALmixer_Channel_List[channel].fade_inv_time = 0.0f; | |
418 ALmixer_Channel_List[channel].fade_start_volume = 0.0f; | |
419 ALmixer_Channel_List[channel].fade_end_volume = 0.0f; | |
420 | |
421 alSourcef(ALmixer_Channel_List[channel].alsource, AL_MAX_GAIN, | |
422 ALmixer_Channel_List[channel].max_volume); | |
423 | |
424 if((error = alGetError()) != AL_NO_ERROR) | |
425 { | |
426 fprintf(stderr, "10Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
427 aluGetErrorString(error)); | |
428 } | |
429 | |
430 alSourcef(ALmixer_Channel_List[channel].alsource, AL_MIN_GAIN, | |
431 ALmixer_Channel_List[channel].min_volume); | |
432 if((error = alGetError()) != AL_NO_ERROR) | |
433 { | |
434 fprintf(stderr, "11Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
435 aluGetErrorString(error)); | |
436 } | |
437 | |
438 if(ALmixer_Channel_List[channel].almixer_data != NULL) | |
439 { | |
440 if(ALmixer_Channel_List[channel].almixer_data->in_use > 0) | |
441 { | |
442 ALmixer_Channel_List[channel].almixer_data->in_use--; | |
443 } | |
444 } | |
445 /* Needed to determine if rewind is needed, can't reset */ | |
446 /* | |
447 ALmixer_Channel_List[channel].almixer_data->eof = 0; | |
448 */ | |
449 | |
450 ALmixer_Channel_List[channel].almixer_data = NULL; | |
451 } | |
452 | |
453 | |
454 #if 0 | |
455 /* Not needed anymore because not doing any fileext checks. | |
456 * | |
457 * Unfortunately, strcasecmp isn't portable so here's a | |
458 * reimplementation of it (taken from SDL_sound) | |
459 */ | |
460 static int ALmixer_strcasecmp(const char* x, const char* y) | |
461 { | |
462 int ux, uy; | |
463 | |
464 if (x == y) /* same pointer? Both NULL? */ | |
465 return(0); | |
466 | |
467 if (x == NULL) | |
468 return(-1); | |
469 | |
470 if (y == NULL) | |
471 return(1); | |
472 | |
473 do | |
474 { | |
475 ux = toupper((int) *x); | |
476 uy = toupper((int) *y); | |
477 if (ux > uy) | |
478 return(1); | |
479 else if (ux < uy) | |
480 return(-1); | |
481 x++; | |
482 y++; | |
483 } while ((ux) && (uy)); | |
484 | |
485 return(0); | |
486 } | |
487 #endif | |
488 | |
489 | |
490 /* What shoud this return? | |
491 * 127 for signed, 255 for unsigned | |
492 */ | |
493 static Uint8 GetSignednessValue(Uint16 format) | |
494 { | |
495 switch(format) | |
496 { | |
497 case AUDIO_U8: | |
498 case AUDIO_U16LSB: | |
499 case AUDIO_U16MSB: | |
500 return ALMIXER_UNSIGNED_VALUE; | |
501 break; | |
502 case AUDIO_S8: | |
503 case AUDIO_S16LSB: | |
504 case AUDIO_S16MSB: | |
505 return ALMIXER_SIGNED_VALUE; | |
506 break; | |
507 default: | |
508 return 0; | |
509 } | |
510 return 0; | |
511 } | |
512 | |
513 | |
514 static Uint8 GetBitDepth(Uint16 format) | |
515 { | |
516 Uint8 bit_depth = 16; | |
517 | |
518 switch(format) | |
519 { | |
520 case AUDIO_U8: | |
521 case AUDIO_S8: | |
522 bit_depth = 8; | |
523 break; | |
524 | |
525 case AUDIO_U16LSB: | |
526 /* | |
527 case AUDIO_U16: | |
528 */ | |
529 case AUDIO_S16LSB: | |
530 /* | |
531 case AUDIO_S16: | |
532 */ | |
533 case AUDIO_U16MSB: | |
534 case AUDIO_S16MSB: | |
535 /* | |
536 case AUDIO_U16SYS: | |
537 case AUDIO_S16SYS: | |
538 */ | |
539 bit_depth = 16; | |
540 break; | |
541 default: | |
542 bit_depth = 0; | |
543 } | |
544 return bit_depth; | |
545 } | |
546 | |
547 /* Need to translate between SDL/SDL_Sound audiospec | |
548 * and OpenAL conventions */ | |
549 static ALenum TranslateFormat(Sound_AudioInfo* info) | |
550 { | |
551 Uint8 bit_depth; | |
552 | |
553 bit_depth = GetBitDepth(info->format); | |
554 if(0 == bit_depth) | |
555 { | |
556 fprintf(stderr, "Warning: Unknown bit depth. Setting to 16\n"); | |
557 bit_depth = 16; | |
558 } | |
559 | |
560 if(2 == info->channels) | |
561 { | |
562 if(16 == bit_depth) | |
563 { | |
564 return AL_FORMAT_STEREO16; | |
565 } | |
566 else | |
567 { | |
568 return AL_FORMAT_STEREO8; | |
569 } | |
570 } | |
571 else | |
572 { | |
573 if(16 == bit_depth) | |
574 { | |
575 return AL_FORMAT_MONO16; | |
576 } | |
577 else | |
578 { | |
579 return AL_FORMAT_MONO8; | |
580 } | |
581 } | |
582 /* Make compiler happy. Shouldn't get here */ | |
583 return AL_FORMAT_STEREO16; | |
584 } | |
585 | |
586 /**************** REMOVED ****************************/ | |
587 /* This was removed because I originally thought | |
588 * OpenAL could return a pointer to the buffer data, | |
589 * but I was wrong. If something like that is ever | |
590 * implemented, then this might become useful. | |
591 */ | |
592 #if 0 | |
593 /* Reconstruct_Sound_Sample and Set_AudioInfo only | |
594 * are needed if the Seek memory optimization is | |
595 * used. Also, the Loki dist doesn't seem to support | |
596 * AL_DATA which I need for it. | |
597 */ | |
598 #ifndef DISABLE_SEEK_MEMORY_OPTIMIZATION | |
599 | |
600 static void Set_AudioInfo(Sound_AudioInfo* info, ALint frequency, ALint bits, ALint channels) | |
601 { | |
602 info->rate = (Uint32)frequency; | |
603 info->channels = (Uint8)channels; | |
604 | |
605 /* Not sure if it should be signed or unsigned. Hopefully | |
606 * that detail won't be needed. | |
607 */ | |
608 if(8 == bits) | |
609 { | |
610 info->format = AUDIO_U8; | |
611 } | |
612 else | |
613 { | |
614 info->format = AUDIO_U16SYS; | |
615 } | |
616 fprintf(stderr, "Audio info: freq=%d, chan=%d, format=%d\n", | |
617 info->rate, info->channels, info->format); | |
618 | |
619 } | |
620 | |
621 | |
622 static Sint32 Reconstruct_Sound_Sample(ALmixer_Data* data) | |
623 { | |
624 ALenum error; | |
625 ALint* data_from_albuffer; | |
626 ALint freq; | |
627 ALint bits; | |
628 ALint channels; | |
629 ALint size; | |
630 | |
631 /* Create memory all initiallized to 0. */ | |
632 data->sample = (Sound_Sample*)calloc(1, sizeof(Sound_Sample)); | |
633 if(NULL == data->sample) | |
634 { | |
635 ALmixer_SetError("Out of memory for Sound_Sample"); | |
636 return -1; | |
637 } | |
638 | |
639 /* Clear errors */ | |
640 alGetError(); | |
641 | |
642 alGetBufferi(data->buffer[0], AL_FREQUENCY, &freq); | |
643 if((error = alGetError()) != AL_NO_ERROR) | |
644 { | |
645 ALmixer_SetError("alGetBufferi(AL_FREQUENCT): %s", aluGetErrorString(error) ); | |
646 free(data->sample); | |
647 data->sample = NULL; | |
648 return -1; | |
649 } | |
650 | |
651 alGetBufferi(data->buffer[0], AL_BITS, &bits); | |
652 if((error = alGetError()) != AL_NO_ERROR) | |
653 { | |
654 ALmixer_SetError("alGetBufferi(AL_BITS): %s", aluGetErrorString(error) ); | |
655 free(data->sample); | |
656 data->sample = NULL; | |
657 return -1; | |
658 } | |
659 | |
660 alGetBufferi(data->buffer[0], AL_CHANNELS, &channels); | |
661 if((error = alGetError()) != AL_NO_ERROR) | |
662 { | |
663 ALmixer_SetError("alGetBufferi(AL_CHANNELS): %s", aluGetErrorString(error) ); | |
664 free(data->sample); | |
665 data->sample = NULL; | |
666 return -1; | |
667 } | |
668 | |
669 alGetBufferi(data->buffer[0], AL_SIZE, &size); | |
670 if((error = alGetError()) != AL_NO_ERROR) | |
671 { | |
672 ALmixer_SetError("alGetBufferi(AL_SIZE): %s", aluGetErrorString(error) ); | |
673 free(data->sample); | |
674 data->sample = NULL; | |
675 return -1; | |
676 } | |
677 | |
678 alGetBufferi(data->buffer[0], AL_DATA, data_from_albuffer); | |
679 if((error = alGetError()) != AL_NO_ERROR) | |
680 { | |
681 ALmixer_SetError("alGetBufferi(AL_DATA): %s", aluGetErrorString(error) ); | |
682 free(data->sample); | |
683 data->sample = NULL; | |
684 return -1; | |
685 } | |
686 | |
687 if(size <= 0) | |
688 { | |
689 ALmixer_SetError("No data in al buffer"); | |
690 free(data->sample); | |
691 data->sample = NULL; | |
692 return -1; | |
693 } | |
694 | |
695 /* Now that we have all the attributes, we need to | |
696 * allocate memory for the buffer and reconstruct | |
697 * the AudioInfo attributes. | |
698 */ | |
699 data->sample->buffer = malloc(size*sizeof(Uint8)); | |
700 if(NULL == data->sample->buffer) | |
701 { | |
702 ALmixer_SetError("Out of memory for sample->buffer"); | |
703 free(data->sample); | |
704 data->sample = NULL; | |
705 return -1; | |
706 } | |
707 | |
708 memcpy(data->sample->buffer, data_from_albuffer, size); | |
709 data->sample->buffer_size = size; | |
710 | |
711 /* Fill up the Sound_AudioInfo structures */ | |
712 Set_AudioInfo(&data->sample->desired, freq, bits, channels); | |
713 Set_AudioInfo(&data->sample->actual, freq, bits, channels); | |
714 | |
715 return 0; | |
716 } | |
717 | |
718 #endif /* End DISABLE_SEEK_MEMORY_OPTIMIZATION */ | |
719 #endif | |
720 /*************** END REMOVED *************************/ | |
721 | |
722 static void Invoke_Channel_Done_Callback(Sint32 channel) | |
723 { | |
724 if(NULL == Channel_Done_Callback) | |
725 { | |
726 return; | |
727 } | |
728 Channel_Done_Callback(channel, Channel_Done_Callback_Userdata); | |
729 } | |
730 | |
731 static Sint32 LookUpBuffer(ALuint buffer, Buffer_Map* buffer_map_list, Uint32 num_items_in_list) | |
732 { | |
733 /* Only the first value is used for the key */ | |
734 Buffer_Map key = { 0, 0, NULL, 0 }; | |
735 Buffer_Map* found_item = NULL; | |
736 key.albuffer = buffer; | |
737 | |
738 /* Use the ANSI C binary search feature (yea!) */ | |
739 found_item = (Buffer_Map*)bsearch(&key, buffer_map_list, num_items_in_list, sizeof(Buffer_Map), Compare_Buffer_Map); | |
740 if(NULL == found_item) | |
741 { | |
742 ALmixer_SetError("Can't find buffer"); | |
743 return -1; | |
744 } | |
745 return found_item->index; | |
746 } | |
747 | |
748 | |
749 /* FIXME: Need to pass back additional info to be useful. | |
750 * Bit rate, stereo/mono (num chans), time in msec? | |
751 * Precoded/streamed flag so user can plan for future data? | |
752 */ | |
753 static void Invoke_Channel_Data_Callback(Sint32 which_channel, Uint8* data, Uint32 num_bytes, Uint32 frequency, Uint8 channels, Uint16 format, Uint8 decode_mode) | |
754 { | |
755 /* | |
756 fprintf(stderr, "%x %x %x %x, bytes=%d, whichchan=%d, freq=%d, channels=%d\n", data[0], data[1], data[2], data[3], num_bytes, channels, frequency, channels); | |
757 */ | |
758 if(NULL == Channel_Data_Callback) | |
759 { | |
760 return; | |
761 } | |
762 Channel_Data_Callback(which_channel, data, num_bytes, frequency, channels, GetBitDepth(format), format, decode_mode); | |
763 } | |
764 | |
765 static void Invoke_Predecoded_Channel_Data_Callback(Sint32 channel, ALmixer_Data* data) | |
766 { | |
767 if(NULL == data->sample) | |
768 { | |
769 return; | |
770 } | |
771 /* The buffer position is complicated because if the current data was seeked, | |
772 * we must adjust the buffer to the seek position | |
773 */ | |
774 Invoke_Channel_Data_Callback(channel, | |
775 (((Uint8*) data->sample->buffer) + (data->total_bytes - data->loaded_bytes) ), | |
776 data->loaded_bytes, | |
777 data->sample->desired.rate, | |
778 data->sample->desired.channels, | |
779 data->sample->desired.format, | |
780 ALMIXER_DECODE_ALL | |
781 ); | |
782 } | |
783 | |
784 static void Invoke_Streamed_Channel_Data_Callback(Sint32 channel, ALmixer_Data* data, ALuint buffer) | |
785 { | |
786 Sint32 index; | |
787 if(NULL == data->buffer_map_list) | |
788 { | |
789 return; | |
790 } | |
791 index = LookUpBuffer(buffer, data->buffer_map_list, data->max_queue_buffers); | |
792 /* This should catch the case where all buffers are unqueued | |
793 * and the "current" buffer is id: 0 | |
794 */ | |
795 if(-1 == index) | |
796 { | |
797 return; | |
798 } | |
799 Invoke_Channel_Data_Callback(channel, | |
800 data->buffer_map_list[index].data, | |
801 data->buffer_map_list[index].num_bytes, | |
802 data->sample->desired.rate, | |
803 data->sample->desired.channels, | |
804 data->sample->desired.format, | |
805 ALMIXER_DECODE_STREAM | |
806 ); | |
807 } | |
808 | |
809 /* From SDL_Sound's playsound. Converts milliseconds to byte positions. | |
810 * This is needed for seeking on predecoded samples | |
811 */ | |
812 static Uint32 Convert_Msec_To_Byte_Pos(Sound_AudioInfo *info, Uint32 ms) | |
813 { | |
814 float frames_per_ms; | |
815 Uint32 frame_offset; | |
816 Uint32 frame_size; | |
817 fprintf(stderr, "In convert\n" ); | |
818 if(info == NULL) | |
819 { | |
820 fprintf(stderr, "Error, info is NULL\n"); | |
821 } | |
822 else | |
823 { | |
824 fprintf(stderr, "Not an error: info is not NULL\n"); | |
825 } | |
826 fprintf(stderr, "The rate=%d\n", info->rate); | |
827 | |
828 /* "frames" == "sample frames" */ | |
829 frames_per_ms = ((float) info->rate) / 1000.0f; | |
830 fprintf(stderr, "%f\n", frames_per_ms); | |
831 frame_offset = (Uint32) (frames_per_ms * ((float) ms)); | |
832 fprintf(stderr, "%d\n", frame_offset); | |
833 frame_size = (Uint32) ((info->format & 0xFF) / 8) * info->channels; | |
834 fprintf(stderr, "%d\n", frame_size); | |
835 return(frame_offset * frame_size); | |
836 } /* cvtMsToBytePos */ | |
837 | |
838 static Sint32 Set_Predecoded_Seek_Position(ALmixer_Data* data, Uint32 byte_position) | |
839 { | |
840 ALenum error; | |
841 /* clear error */ | |
842 alGetError(); | |
843 | |
844 /* Is it greater than, or greater-than or equal to ?? */ | |
845 if(byte_position > data->total_bytes) | |
846 { | |
847 /* We can't go past the end, so set to end? */ | |
848 fprintf(stderr, "Error, can't seek past end\n"); | |
849 | |
850 /* In case the below thing doesn't work, | |
851 * just rewind the whole thing. | |
852 * | |
853 alBufferData(data->buffer[0], | |
854 TranslateFormat(&data->sample->desired), | |
855 (Uint8*) data->sample->buffer, | |
856 data->total_bytes, | |
857 data->sample->desired.rate | |
858 ); | |
859 */ | |
860 | |
861 /* I was trying to set to the end, (1 byte remaining), | |
862 * but I was getting freezes. I'm thinking it might be | |
863 * another Power of 2 bug in the Loki dist. I tried 2, | |
864 * and it still hung. 4 didn't hang, but I got a clip | |
865 * artifact. 8 seemed to work okay. | |
866 */ | |
867 alBufferData(data->buffer[0], | |
868 TranslateFormat(&data->sample->desired), | |
869 (((Uint8*) data->sample->buffer) + (data->total_bytes - 8) ), | |
870 8, | |
871 data->sample->desired.rate | |
872 ); | |
873 if( (error = alGetError()) != AL_NO_ERROR) | |
874 { | |
875 ALmixer_SetError("Can't seek past end and alBufferData failed: %s\n", aluGetErrorString(error)); | |
876 return -1; | |
877 } | |
878 /* Need to set the loaded_bytes field because I don't trust the OpenAL | |
879 * query command to work because I don't know if it will mutilate the | |
880 * size for its own purposes or return the original size | |
881 */ | |
882 data->loaded_bytes = 8; | |
883 | |
884 /* Not sure if this should be an error or not */ | |
885 /* | |
886 ALmixer_SetError("Can't Seek past end"); | |
887 return -1; | |
888 */ | |
889 return 0; | |
890 } | |
891 | |
892 alBufferData(data->buffer[0], | |
893 TranslateFormat(&data->sample->desired), | |
894 &(((Uint8*)data->sample->buffer)[byte_position]), | |
895 data->total_bytes - byte_position, | |
896 data->sample->desired.rate | |
897 ); | |
898 if( (error = alGetError()) != AL_NO_ERROR) | |
899 { | |
900 ALmixer_SetError("alBufferData failed: %s\n", aluGetErrorString(error)); | |
901 return -1; | |
902 } | |
903 /* Need to set the loaded_bytes field because I don't trust the OpenAL | |
904 * query command to work because I don't know if it will mutilate the | |
905 * size for its own purposes or return the original size | |
906 */ | |
907 data->loaded_bytes = data->total_bytes - byte_position; | |
908 | |
909 return 0; | |
910 } | |
911 | |
912 /* This will compute the total playing time | |
913 * based upon the number of bytes and audio info. | |
914 * (In prinicple, it should compute the time for any given length) | |
915 */ | |
916 static Uint32 Compute_Total_Time(Sound_AudioInfo *info, Uint32 total_bytes) | |
917 { | |
918 Uint32 bytes_per_sec; | |
919 Uint32 bytes_per_sample; | |
920 double total_sec; | |
921 Uint32 total_msec; | |
922 | |
923 if(0 == total_bytes) | |
924 { | |
925 return 0; | |
926 } | |
927 /* SDL has a mask trick I was not aware of. Mask the upper bits | |
928 * of the format, and you get 8 or 16 which is the bits per sample. | |
929 * Divide by 8bits_per_bytes and you get bytes_per_sample | |
930 */ | |
931 bytes_per_sample = (Uint32) ((info->format & 0xFF) / 8); | |
932 /* To compute Bytes per second, do | |
933 * samples_per_sec * bytes_per_sample * number_of_channels | |
934 */ | |
935 bytes_per_sec = info->rate * bytes_per_sample * info->channels; | |
936 | |
937 /* Now to get total time (sec), do | |
938 * total_bytes / bytes_per_sec | |
939 */ | |
940 total_sec = total_bytes / (double)bytes_per_sec; | |
941 | |
942 /* Now convert seconds to milliseconds | |
943 * Add .5 to the float to do rounding before the final cast | |
944 */ | |
945 total_msec = (Uint32) ( (total_sec * 1000) + 0.5 ); | |
946 | |
947 fprintf(stderr, "%d\n", total_msec); | |
948 return total_msec; | |
949 } /* End Compute_Total_Time */ | |
950 | |
951 | |
952 | |
953 | |
954 /* Because we have multiple queue buffers and OpenAL won't let | |
955 * us access them, we need to keep copies of each buffer around | |
956 */ | |
957 static Sint32 CopyDataToAccessBuffer(ALmixer_Data* data, Uint32 num_bytes, ALuint buffer) | |
958 { | |
959 Sint32 index; | |
960 /* We only want to copy if access_data is true. | |
961 * This is determined by whether memory has been | |
962 * allocated in the buffer_map_list or not | |
963 */ | |
964 if(NULL == data->buffer_map_list) | |
965 { | |
966 return -1; | |
967 } | |
968 index = LookUpBuffer(buffer, data->buffer_map_list, data->max_queue_buffers); | |
969 if(-1 == index) | |
970 { | |
971 fprintf(stderr, ">>>>>>>CopyData catch, albuffer=%d\n",buffer); | |
972 return -1; | |
973 } | |
974 /* Copy the data to the access buffer */ | |
975 memcpy(data->buffer_map_list[index].data, data->sample->buffer, num_bytes); | |
976 data->buffer_map_list[index].num_bytes = data->sample->buffer_size; | |
977 | |
978 return 0; | |
979 } | |
980 | |
981 | |
982 /* For streamed data, gets more data | |
983 * and prepares it in the active Mix_chunk | |
984 */ | |
985 static Uint32 GetMoreData(ALmixer_Data* data, ALuint buffer) | |
986 { | |
987 Uint32 bytes_decoded; | |
988 ALenum error; | |
989 if(NULL == data) | |
990 { | |
991 ALmixer_SetError("Cannot GetMoreData() because ALmixer_Data* is NULL\n"); | |
992 return 0; | |
993 } | |
994 | |
995 bytes_decoded = Sound_Decode(data->sample); | |
996 if(data->sample->flags & SOUND_SAMPLEFLAG_ERROR) | |
997 { | |
998 fprintf(stderr, "Sound_Decode triggered an ERROR>>>>>>\n"); | |
999 ALmixer_SetError(Sound_GetError()); | |
1000 /* Force cleanup through FreeData | |
1001 Sound_FreeSample(data->sample); | |
1002 */ | |
1003 return 0; | |
1004 } | |
1005 | |
1006 | |
1007 /* Don't forget to add check for EOF */ | |
1008 /* Will return 0 bytes and pass the buck to check sample->flags */ | |
1009 if(0 == bytes_decoded) | |
1010 { | |
1011 #if 1 | |
1012 fprintf(stderr, "Hit eof while trying to buffer\n"); | |
1013 data->eof = 1; | |
1014 if(data->sample->flags & SOUND_SAMPLEFLAG_EOF) | |
1015 { | |
1016 fprintf(stderr, "\tEOF flag\n"); | |
1017 } | |
1018 if(data->sample->flags & SOUND_SAMPLEFLAG_CANSEEK) | |
1019 { | |
1020 fprintf(stderr, "\tCanSeek flag\n"); | |
1021 } | |
1022 if(data->sample->flags & SOUND_SAMPLEFLAG_EAGAIN) | |
1023 { | |
1024 fprintf(stderr, "\tEAGAIN flag\n"); | |
1025 } | |
1026 if(data->sample->flags & SOUND_SAMPLEFLAG_NONE) | |
1027 { | |
1028 fprintf(stderr, "\tNONE flag\n"); | |
1029 } | |
1030 #endif | |
1031 return 0; | |
1032 } | |
1033 | |
1034 #ifdef ENABLE_LOKI_QUEUE_FIX_HACK | |
1035 /******* REMOVE ME ********************************/ | |
1036 /***************** ANOTHER EXPERIEMENT *******************/ | |
1037 /* The PROBLEM: It seems that the Loki distribution has problems | |
1038 * with Queuing when the buffer size is not a power of two | |
1039 * and additional buffers must come after it. | |
1040 * The behavior is inconsistent, but one of several things | |
1041 * usually happens: | |
1042 * Playback is normal | |
1043 * Playback immediately stops after the non-pow2 buffer | |
1044 * Playback gets distorted on the non-pow2 buffer | |
1045 * The entire program segfaults. | |
1046 * The workaround is to always specify a power of two buffer size | |
1047 * and hope that SDL_sound always fill it. (By lucky coincidence, | |
1048 * I already submitted the Ogg fix.) However, this won't catch | |
1049 * cases where a loop happens because the read at the end of the | |
1050 * file is typically less than the buffer size. | |
1051 * | |
1052 * This fix addresses this issue, however it may break in | |
1053 * other conditions. Always decode in buffer sizes of powers of 2. | |
1054 * | |
1055 * The HACK: | |
1056 * If the buffer is short, try filling it up with 0's | |
1057 * to meet the user requested buffer_size which | |
1058 * is probably a nice number OpenAL likes, in | |
1059 * hopes to avoid a possible Loki bug with | |
1060 * short buffers. If looping (which is the main | |
1061 * reason for this), the negative side effect is | |
1062 * that it may take longer for the loop to start | |
1063 * because it must play dead silence. Or if the decoder | |
1064 * doesn't guarantee to return the requested bytes | |
1065 * (like Ogg), then you will get breakup in between | |
1066 * packets. | |
1067 */ | |
1068 if( (bytes_decoded) < data->sample->buffer_size) | |
1069 { | |
1070 Uint8 bit_depth; | |
1071 Uint8 signedness_value; | |
1072 int silence_value; | |
1073 /* Crap, memset value needs to be the "silent" value, | |
1074 * but it will differ for signed/unsigned and bit depth | |
1075 */ | |
1076 bit_depth = GetBitDepth(data->sample->desired.format); | |
1077 signedness_value = GetSignednessValue(data->sample->desired.format); | |
1078 if(ALMIXER_SIGNED_VALUE == signedness_value) | |
1079 { | |
1080 /* I'm guessing that if it's signed, then 0 is the | |
1081 * "silent" value */ | |
1082 silence_value = 0; | |
1083 } | |
1084 else | |
1085 { | |
1086 if(8 == bit_depth) | |
1087 { | |
1088 /* If 8 bit, I'm guessing it's (2^7)-1 = 127 */ | |
1089 silence_value = 127; | |
1090 } | |
1091 else | |
1092 { | |
1093 /* For 16 bit, I'm guessing it's (2^15)-1 = 32767 */ | |
1094 silence_value = 32767; | |
1095 } | |
1096 } | |
1097 /* Now fill up the rest of the data buffer with the | |
1098 * silence_value. | |
1099 * I don't think I have to worry about endian issues for | |
1100 * this part since the data is for internal use only | |
1101 * at this point. | |
1102 */ | |
1103 memset( &( ((Uint8*)(data->sample->buffer))[bytes_decoded] ), silence_value, data->sample->buffer_size - bytes_decoded); | |
1104 /* Now reset the bytes_decoded to reflect the entire | |
1105 * buffer to tell alBufferData what our full size is. | |
1106 */ | |
1107 fprintf(stderr, "ALTERED bytes decoded for silence: Original end was %d\n", bytes_decoded); | |
1108 bytes_decoded = data->sample->buffer_size; | |
1109 } | |
1110 /*********** END EXPERIMENT ******************************/ | |
1111 /******* END REMOVE ME ********************************/ | |
1112 #endif | |
1113 | |
1114 /* Now copy the data to the OpenAL buffer */ | |
1115 /* We can't just set a pointer because the API needs | |
1116 * its own copy to assist hardware acceleration */ | |
1117 alBufferData(buffer, | |
1118 TranslateFormat(&data->sample->desired), | |
1119 data->sample->buffer, | |
1120 bytes_decoded, | |
1121 data->sample->desired.rate | |
1122 ); | |
1123 if( (error = alGetError()) != AL_NO_ERROR) | |
1124 { | |
1125 ALmixer_SetError("alBufferData failed: %s\n", aluGetErrorString(error)); | |
1126 return 0; | |
1127 } | |
1128 | |
1129 /* If we need to, copy the data also to the access area | |
1130 * (the function will do the check for us) | |
1131 */ | |
1132 CopyDataToAccessBuffer(data, bytes_decoded, buffer); | |
1133 return bytes_decoded; | |
1134 } | |
1135 | |
1136 | |
1137 | |
1138 | |
1139 /******************** EXPERIEMENT **************************** | |
1140 * Test function to force maximum buffer filling during loops | |
1141 * REMOVE LATER | |
1142 *********************************************/ | |
1143 #if 0 | |
1144 static Sint32 GetMoreData2(ALmixer_Data* data, ALuint buffer) | |
1145 { | |
1146 Sint32 bytes_decoded; | |
1147 ALenum error; | |
1148 if(NULL == data) | |
1149 { | |
1150 ALmixer_SetError("Cannot GetMoreData() because ALmixer_Data* is NULL\n"); | |
1151 return -1; | |
1152 } | |
1153 | |
1154 if(AL_FALSE == alIsBuffer(buffer)) | |
1155 { | |
1156 fprintf(stderr, "NOT A BUFFER>>>>>>>>>>>>>>>\n"); | |
1157 return -1; | |
1158 } | |
1159 fprintf(stderr, "Entered GetMoreData222222: buffer id is %d\n", buffer); | |
1160 | |
1161 /* | |
1162 fprintf(stderr, "Decode in GetMoreData\n"); | |
1163 */ | |
1164 | |
1165 #if 0 | |
1166 if(buffer%2 == 1) | |
1167 { | |
1168 fprintf(stderr, "Setting buffer size to 16384\n"); | |
1169 Sound_SetBufferSize(data->sample, 16384); | |
1170 } | |
1171 else | |
1172 { | |
1173 fprintf(stderr, "Setting buffer size to 8192\n"); | |
1174 Sound_SetBufferSize(data->sample, 8192); | |
1175 } | |
1176 #endif | |
1177 | |
1178 bytes_decoded = Sound_Decode(data->sample); | |
1179 if(data->sample->flags & SOUND_SAMPLEFLAG_ERROR) | |
1180 { | |
1181 fprintf(stderr, "Sound_Decode triggered an ERROR>>>>>>\n"); | |
1182 ALmixer_SetError(Sound_GetError()); | |
1183 /* | |
1184 Sound_FreeSample(data->sample); | |
1185 */ | |
1186 return -1; | |
1187 } | |
1188 /* Don't forget to add check for EOF */ | |
1189 /* Will return 0 bytes and pass the buck to check sample->flags */ | |
1190 if(0 == bytes_decoded) | |
1191 { | |
1192 #if 1 | |
1193 fprintf(stderr, "Hit eof while trying to buffer\n"); | |
1194 data->eof = 1; | |
1195 if(data->sample->flags & SOUND_SAMPLEFLAG_EOF) | |
1196 { | |
1197 fprintf(stderr, "\tEOF flag\n"); | |
1198 } | |
1199 if(data->sample->flags & SOUND_SAMPLEFLAG_CANSEEK) | |
1200 { | |
1201 fprintf(stderr, "\tCanSeek flag\n"); | |
1202 } | |
1203 if(data->sample->flags & SOUND_SAMPLEFLAG_EAGAIN) | |
1204 { | |
1205 fprintf(stderr, "\tEAGAIN flag\n"); | |
1206 } | |
1207 if(data->sample->flags & SOUND_SAMPLEFLAG_NONE) | |
1208 { | |
1209 fprintf(stderr, "\tNONE flag\n"); | |
1210 } | |
1211 #endif | |
1212 return 0; | |
1213 } | |
1214 | |
1215 if(bytes_decoded < 16384) | |
1216 { | |
1217 char* tempbuffer1 = (char*)malloc(16384); | |
1218 char* tempbuffer2 = (char*)malloc(16384); | |
1219 int retval; | |
1220 memcpy(tempbuffer1, data->sample->buffer, bytes_decoded); | |
1221 retval = Sound_SetBufferSize(data->sample, 16384-bytes_decoded); | |
1222 if(retval == 1) | |
1223 { | |
1224 Uint32 new_bytes; | |
1225 Sound_Rewind(data->sample); | |
1226 new_bytes = Sound_Decode(data->sample); | |
1227 fprintf(stderr, "Orig bytes: %d, Make up bytes_decoded=%d, total=%d\n", bytes_decoded, new_bytes, new_bytes+bytes_decoded); | |
1228 | |
1229 memcpy(tempbuffer2, data->sample->buffer, new_bytes); | |
1230 | |
1231 retval = Sound_SetBufferSize(data->sample, 16384); | |
1232 fprintf(stderr, "Finished reset...now danger copy\n"); | |
1233 memcpy(data->sample->buffer, tempbuffer1,bytes_decoded); | |
1234 | |
1235 fprintf(stderr, "Finished reset...now danger copy2\n"); | |
1236 memcpy( &( ((char*)(data->sample->buffer))[bytes_decoded] ), tempbuffer2, new_bytes); | |
1237 | |
1238 fprintf(stderr, "Finished \n"); | |
1239 | |
1240 free(tempbuffer1); | |
1241 free(tempbuffer2); | |
1242 bytes_decoded += new_bytes; | |
1243 fprintf(stderr, "ASSERT bytes should equal 16384: %d\n", bytes_decoded); | |
1244 } | |
1245 else | |
1246 { | |
1247 fprintf(stderr, "Experiment failed: %s\n", Sound_GetError()); | |
1248 } | |
1249 } | |
1250 | |
1251 /* Now copy the data to the OpenAL buffer */ | |
1252 /* We can't just set a pointer because the API needs | |
1253 * its own copy to assist hardware acceleration */ | |
1254 alBufferData(buffer, | |
1255 TranslateFormat(&data->sample->desired), | |
1256 data->sample->buffer, | |
1257 bytes_decoded, | |
1258 data->sample->desired.rate | |
1259 ); | |
1260 if( (error = alGetError()) != AL_NO_ERROR) | |
1261 { | |
1262 ALmixer_SetError("alBufferData failed: %s\n", aluGetErrorString(error)); | |
1263 return -1; | |
1264 } | |
1265 | |
1266 fprintf(stderr, "GetMoreData2222 returning %d bytes decoded\n", bytes_decoded); | |
1267 return bytes_decoded; | |
1268 } | |
1269 #endif | |
1270 | |
1271 /************ END EXPERIEMENT - REMOVE ME *************************/ | |
1272 | |
1273 | |
1274 | |
1275 | |
1276 | |
1277 | |
1278 | |
1279 | |
1280 | |
1281 /* This function will look up the source for the corresponding channel */ | |
1282 /* Must return 0 on error instead of -1 because of unsigned int */ | |
1283 static ALuint Internal_GetSource(Sint32 channel) | |
1284 { | |
1285 Sint32 i; | |
1286 /* Make sure channel is in bounds */ | |
1287 if(channel >= Number_of_Channels_global) | |
1288 { | |
1289 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
1290 return 0; | |
1291 } | |
1292 /* If the user specified -1, then return the an available source */ | |
1293 if(channel < 0) | |
1294 { | |
1295 for(i=Number_of_Reserve_Channels_global; i<Number_of_Channels_global; i++) | |
1296 { | |
1297 if( ! ALmixer_Channel_List[i].channel_in_use ) | |
1298 { | |
1299 return ALmixer_Channel_List[i].alsource; | |
1300 } | |
1301 } | |
1302 /* If we get here, all sources are in use */ | |
1303 /* Error message seems too harsh | |
1304 ALmixer_SetError("All sources are in use"); | |
1305 */ | |
1306 return 0; | |
1307 } | |
1308 /* Last case: Return the source for the channel */ | |
1309 return ALmixer_Channel_List[channel].alsource; | |
1310 } | |
1311 | |
1312 /* This function will look up the channel for the corresponding source */ | |
1313 static Sint32 Internal_GetChannel(ALuint source) | |
1314 { | |
1315 Sint32 i; | |
1316 /* Only the first value is used for the key */ | |
1317 Source_Map key = { 0, 0 }; | |
1318 Source_Map* found_item = NULL; | |
1319 key.source = source; | |
1320 | |
1321 /* If the source is 0, look up the first available channel */ | |
1322 if(0 == source) | |
1323 { | |
1324 for(i=Number_of_Reserve_Channels_global; i<Number_of_Channels_global; i++) | |
1325 { | |
1326 if( ! ALmixer_Channel_List[i].channel_in_use ) | |
1327 { | |
1328 return i; | |
1329 } | |
1330 } | |
1331 /* If we get here, all sources are in use */ | |
1332 /* Error message seems too harsh | |
1333 ALmixer_SetError("All channels are in use"); | |
1334 */ | |
1335 return -1; | |
1336 } | |
1337 | |
1338 | |
1339 /* Else, look up the source and return the channel */ | |
1340 if(AL_FALSE == alIsSource(source)) | |
1341 { | |
1342 ALmixer_SetError("Is not a source"); | |
1343 return -1; | |
1344 } | |
1345 | |
1346 /* Use the ANSI C binary search feature (yea!) */ | |
1347 found_item = (Source_Map*)bsearch(&key, Source_Map_List, Number_of_Channels_global, sizeof(Source_Map), Compare_Source_Map); | |
1348 if(NULL == found_item) | |
1349 { | |
1350 ALmixer_SetError("Source is valid but not registered with ALmixer (to a channel)"); | |
1351 return -1; | |
1352 } | |
1353 return found_item->channel; | |
1354 } | |
1355 | |
1356 | |
1357 | |
1358 /* This function will find the first available channel (not in use) | |
1359 * from the specified start channel. Reserved channels to not qualify | |
1360 * as available. | |
1361 */ | |
1362 static Sint32 Internal_FindFreeChannel(Sint32 start_channel) | |
1363 { | |
1364 /* Start at the number of reserved so we skip over | |
1365 * all the reserved channels. | |
1366 */ | |
1367 Sint32 i = Number_of_Reserve_Channels_global; | |
1368 /* Quick check to see if we're out of bounds */ | |
1369 if(start_channel >= Number_of_Channels_global) | |
1370 { | |
1371 return -1; | |
1372 } | |
1373 | |
1374 /* If the start channel is even higher than the reserved, | |
1375 * then start at the higher value. | |
1376 */ | |
1377 if(start_channel > Number_of_Reserve_Channels_global) | |
1378 { | |
1379 i = start_channel; | |
1380 } | |
1381 | |
1382 /* i has already been set */ | |
1383 for( ; i<Number_of_Channels_global; i++) | |
1384 { | |
1385 if( ! ALmixer_Channel_List[i].channel_in_use ) | |
1386 { | |
1387 return i; | |
1388 } | |
1389 } | |
1390 /* If we get here, all sources are in use */ | |
1391 return -1; | |
1392 } | |
1393 | |
1394 | |
1395 | |
1396 | |
1397 /* Note: Behaves, almost like SDL_mixer, but keep in mind | |
1398 * that there is no "music" channel anymore, so 0 | |
1399 * will remove everything. (Note, I no longer allow 0 | |
1400 * so it gets set to the default number.) | |
1401 * Also, callbacks for deleted channels will not be called. | |
1402 * I really need to do error checking, for realloc and | |
1403 * GenSources, but reversing the damage is too painful | |
1404 * for me to think about at the moment, so it's not in here. | |
1405 */ | |
1406 static Sint32 Internal_AllocateChannels(Sint32 numchans) | |
1407 { | |
1408 ALenum error; | |
1409 int i; | |
1410 /* Return info */ | |
1411 if(numchans < 0) | |
1412 { | |
1413 return Number_of_Channels_global; | |
1414 } | |
1415 if(0 == numchans) | |
1416 { | |
1417 numchans = ALMIXER_DEFAULT_NUM_CHANNELS; | |
1418 } | |
1419 /* No change */ | |
1420 if(numchans == Number_of_Channels_global) | |
1421 { | |
1422 return Number_of_Channels_global; | |
1423 } | |
1424 /* We need to increase the number of channels */ | |
1425 if(numchans > Number_of_Channels_global) | |
1426 { | |
1427 /* Not sure how safe this is, but SDL_mixer does it | |
1428 * the same way */ | |
1429 ALmixer_Channel_List = (struct ALmixer_Channel*) realloc( ALmixer_Channel_List, numchans * sizeof(struct ALmixer_Channel)); | |
1430 | |
1431 /* Allocate memory for the list of sources that map to the channels */ | |
1432 Source_Map_List = (Source_Map*) realloc(Source_Map_List, numchans * sizeof(Source_Map)); | |
1433 | |
1434 for(i=Number_of_Channels_global; i<numchans; i++) | |
1435 { | |
1436 Init_Channel(i); | |
1437 /* Generate a new source and associate it with the channel */ | |
1438 alGenSources(1, &ALmixer_Channel_List[i].alsource); | |
1439 if((error = alGetError()) != AL_NO_ERROR) | |
1440 { | |
1441 fprintf(stderr, "12Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
1442 aluGetErrorString(error)); | |
1443 } | |
1444 /* Copy the source so the SourceMap has it too */ | |
1445 Source_Map_List[i].source = ALmixer_Channel_List[i].alsource; | |
1446 Source_Map_List[i].channel = i; | |
1447 /* Clean the channel because there are some things that need to | |
1448 * be done that can't happen until the source is set | |
1449 */ | |
1450 Clean_Channel(i); | |
1451 } | |
1452 | |
1453 /* The Source_Map_List must be sorted by source for binary searches | |
1454 */ | |
1455 qsort(Source_Map_List, numchans, sizeof(Source_Map), Compare_Source_Map); | |
1456 | |
1457 Number_of_Channels_global = numchans; | |
1458 return numchans; | |
1459 } | |
1460 /* Need to remove channels. This might be dangerous */ | |
1461 if(numchans < Number_of_Channels_global) | |
1462 { | |
1463 for(i=numchans; i<Number_of_Channels_global; i++) | |
1464 { | |
1465 /* Halt the channel */ | |
1466 ALmixer_HaltChannel(i); | |
1467 | |
1468 /* Delete source associated with the channel */ | |
1469 alDeleteSources(1, &ALmixer_Channel_List[i].alsource); | |
1470 if((error = alGetError()) != AL_NO_ERROR) | |
1471 { | |
1472 fprintf(stderr, "13Testing error: %s\n", | |
1473 aluGetErrorString(error)); | |
1474 } | |
1475 } | |
1476 | |
1477 | |
1478 /* Not sure how safe this is, but SDL_mixer does it | |
1479 * the same way */ | |
1480 ALmixer_Channel_List = (struct ALmixer_Channel*) realloc( ALmixer_Channel_List, numchans * sizeof(struct ALmixer_Channel)); | |
1481 | |
1482 /* The tricky part is that we must remove the entries | |
1483 * in the source map that correspond to the deleted channels. | |
1484 * We'll resort the map by channels so we can pick them off | |
1485 * in order. | |
1486 */ | |
1487 qsort(Source_Map_List, Number_of_Channels_global, sizeof(Source_Map), Compare_Source_Map_by_channel); | |
1488 | |
1489 /* Deallocate memory for the list of sources that map to the channels */ | |
1490 Source_Map_List = (Source_Map*) realloc(Source_Map_List, numchans * sizeof(Source_Map)); | |
1491 | |
1492 /* Now resort the map by source and the correct num of chans */ | |
1493 qsort(Source_Map_List, numchans, sizeof(Source_Map), Compare_Source_Map); | |
1494 | |
1495 /* Reset the number of channels */ | |
1496 Number_of_Channels_global = numchans; | |
1497 return numchans; | |
1498 } | |
1499 /* Shouldn't ever reach here */ | |
1500 return -1; | |
1501 | |
1502 } | |
1503 | |
1504 static Sint32 Internal_ReserveChannels(Sint32 num) | |
1505 { | |
1506 /* Can't reserve more than the max num of channels */ | |
1507 /* Actually, I'll allow it for people who just want to | |
1508 * set the value really high to effectively disable | |
1509 * auto-assignment | |
1510 */ | |
1511 | |
1512 /* Return the current number of reserved channels */ | |
1513 if(num < 0) | |
1514 { | |
1515 return Number_of_Reserve_Channels_global; | |
1516 } | |
1517 Number_of_Reserve_Channels_global = num; | |
1518 return Number_of_Reserve_Channels_global; | |
1519 } | |
1520 | |
1521 | |
1522 | |
1523 | |
1524 | |
1525 static Sint32 Internal_PlayChannelTimed(Sint32 channel, ALmixer_Data* data, Sint32 loops, Sint32 ticks) | |
1526 { | |
1527 ALenum error; | |
1528 int ret_flag = 0; | |
1529 if(NULL == data) | |
1530 { | |
1531 ALmixer_SetError("Can't play because data is NULL\n"); | |
1532 return -1; | |
1533 } | |
1534 | |
1535 /* There isn't a good way to share streamed files because | |
1536 * the decoded data doesn't stick around. | |
1537 * You must "Load" a brand new instance of | |
1538 * the data. If you try using the same data, | |
1539 * bad things may happen. This check will attempt | |
1540 * to prevent sharing | |
1541 */ | |
1542 if(0 == data->decoded_all) | |
1543 { | |
1544 if(data->in_use) | |
1545 { | |
1546 ALmixer_SetError("Can't play shared streamed sample because it is already in use"); | |
1547 return -1; | |
1548 } | |
1549 | |
1550 /* Make sure SDL_sound sample is not at EOF. | |
1551 * This mainly affects streamed files, | |
1552 * so the check is placed here | |
1553 */ | |
1554 if(data->eof) | |
1555 { | |
1556 if( -1 == ALmixer_RewindData(data) ) | |
1557 { | |
1558 ALmixer_SetError("Can't play sample because it is at EOF and cannot rewind"); | |
1559 return -1; | |
1560 } | |
1561 } | |
1562 } | |
1563 /* We need to provide the user with the first available channel */ | |
1564 if(-1 == channel) | |
1565 { | |
1566 Sint32 i; | |
1567 for(i=Number_of_Reserve_Channels_global; i<Number_of_Channels_global; i++) | |
1568 { | |
1569 if(0 == ALmixer_Channel_List[i].channel_in_use) | |
1570 { | |
1571 channel = i; | |
1572 break; | |
1573 } | |
1574 } | |
1575 /* if we couldn't find a channel, return an error */ | |
1576 if(i == Number_of_Channels_global) | |
1577 { | |
1578 ALmixer_SetError("No channels available for playing"); | |
1579 return -1; | |
1580 } | |
1581 } | |
1582 /* If we didn't assign the channel number, make sure it's not | |
1583 * out of bounds or in use */ | |
1584 else | |
1585 { | |
1586 if(channel >= Number_of_Channels_global) | |
1587 { | |
1588 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
1589 return -1; | |
1590 } | |
1591 else if(ALmixer_Channel_List[channel].channel_in_use) | |
1592 { | |
1593 ALmixer_SetError("Requested channel (%d) is in use", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
1594 return -1; | |
1595 } | |
1596 } | |
1597 /* Make sure the user doesn't enter some meaningless value */ | |
1598 if(loops < -1) | |
1599 { | |
1600 loops = -1; | |
1601 } | |
1602 | |
1603 /* loops will probably have to change to be controlled by SDL_Sound */ | |
1604 | |
1605 /* Set up the initial values for playing */ | |
1606 ALmixer_Channel_List[channel].channel_in_use = 1; | |
1607 data->in_use++; | |
1608 | |
1609 /* Shouldn't need updating until a callback is fired | |
1610 * (assuming that we call Play in this function | |
1611 */ | |
1612 ALmixer_Channel_List[channel].needs_stream = 0; | |
1613 ALmixer_Channel_List[channel].almixer_data = data; | |
1614 ALmixer_Channel_List[channel].start_time = SDL_GetTicks(); | |
1615 | |
1616 /* If user entered -1 (or less), set to -1 */ | |
1617 if(ticks < 0) | |
1618 { | |
1619 ALmixer_Channel_List[channel].expire_ticks = -1; | |
1620 } | |
1621 else | |
1622 { | |
1623 ALmixer_Channel_List[channel].expire_ticks = ticks; | |
1624 } | |
1625 | |
1626 | |
1627 ALmixer_Channel_List[channel].halted = 0; | |
1628 ALmixer_Channel_List[channel].paused = 0; | |
1629 | |
1630 /* Ran just use OpenAL to control loops if predecoded and infinite */ | |
1631 ALmixer_Channel_List[channel].loops = loops; | |
1632 if( (-1 == loops) && (data->decoded_all) ) | |
1633 { | |
1634 alSourcei(ALmixer_Channel_List[channel].alsource, AL_LOOPING, AL_TRUE); | |
1635 } | |
1636 else | |
1637 { | |
1638 alSourcei(ALmixer_Channel_List[channel].alsource, AL_LOOPING, AL_FALSE); | |
1639 } | |
1640 if((error = alGetError()) != AL_NO_ERROR) | |
1641 { | |
1642 fprintf(stderr, "13Testing error: %s\n", | |
1643 aluGetErrorString(error)); | |
1644 } | |
1645 | |
1646 #if 0 | |
1647 /* Because of the corner case, predecoded | |
1648 * files must add +1 to the loops. | |
1649 * Streams do not have this problem | |
1650 * because they can use the eof flag to | |
1651 * avoid the conflict. | |
1652 * Sharing data chunks prevents the use of the eof flag. | |
1653 * Since streams, cannot share, only predecoded | |
1654 * files are affected | |
1655 */ | |
1656 if(data->decoded_all) | |
1657 { | |
1658 /* Corner Case: Now that play calls are pushed | |
1659 * off to update(), the start call must | |
1660 * also come through here. So, start loops | |
1661 * must be +1 | |
1662 */ | |
1663 if(-1 == loops) | |
1664 { | |
1665 /* -1 is a special case, and you don't want | |
1666 * to add +1 to it */ | |
1667 ALmixer_Channel_List[channel].loops = -1; | |
1668 alSourcei(ALmixer_Channel_List[channel].alsource, AL_LOOPING, AL_TRUE); | |
1669 } | |
1670 else | |
1671 { | |
1672 ALmixer_Channel_List[channel].loops = loops+1; | |
1673 alSourcei(ALmixer_Channel_List[channel].alsource, AL_LOOPING, AL_FALSE); | |
1674 } | |
1675 } | |
1676 else | |
1677 { | |
1678 ALmixer_Channel_List[channel].loops = loops; | |
1679 /* Can we really loop on streamed data? */ | |
1680 alSourcei(ALmixer_Channel_List[channel].alsource, AL_LOOPING, AL_TRUE); | |
1681 } | |
1682 #endif | |
1683 | |
1684 /* Should I start playing here or pass the buck to update? */ | |
1685 /* Unlike SDL_SoundMixer, I think I'll do it here because | |
1686 * this library isn't a *total* hack and OpenAL has more | |
1687 * built in functionality I need, so less needs to be | |
1688 * controlled and directed through the update function. | |
1689 * The downside is less functionality is centralized. | |
1690 * The upside is that the update function should be | |
1691 * easier to maintain. | |
1692 */ | |
1693 | |
1694 /* Clear the error flag */ | |
1695 alGetError(); | |
1696 if(data->decoded_all) | |
1697 { | |
1698 /* Bind the data to the source */ | |
1699 alSourcei( | |
1700 ALmixer_Channel_List[channel].alsource, | |
1701 AL_BUFFER, | |
1702 data->buffer[0]); | |
1703 if((error = alGetError()) != AL_NO_ERROR) | |
1704 { | |
1705 ALmixer_SetError("Could not bind data to source: %s", | |
1706 aluGetErrorString(error) ); | |
1707 Clean_Channel(channel); | |
1708 return -1; | |
1709 } | |
1710 | |
1711 /* Make data available if access_data is enabled */ | |
1712 Invoke_Predecoded_Channel_Data_Callback(channel, data); | |
1713 } | |
1714 else | |
1715 { | |
1716 /* Need to use the streaming buffer for binding */ | |
1717 | |
1718 Uint32 bytes_returned; | |
1719 Uint32 j; | |
1720 data->num_buffers_in_use=0; | |
1721 /****** MODIFICATION must go here *********/ | |
1722 /* Since buffer queuing is pushed off until here to | |
1723 * avoid buffer conflicts, we must start reading | |
1724 * data here. First we make sure we have at least one | |
1725 * packet. Then we queue up until we hit our limit. | |
1726 */ | |
1727 bytes_returned = GetMoreData( | |
1728 data, | |
1729 data->buffer[0]); | |
1730 if(0 == bytes_returned) | |
1731 { | |
1732 /* No data or error */ | |
1733 ALmixer_SetError("Could not get data for streamed PlayChannel: %s", ALmixer_GetError()); | |
1734 Clean_Channel(channel); | |
1735 return -1; | |
1736 } | |
1737 /* Increment the number of buffers in use */ | |
1738 data->num_buffers_in_use++; | |
1739 | |
1740 | |
1741 /* Now we need to fill up the rest of the buffers. | |
1742 * There is a corner case where we run out of data | |
1743 * before the last buffer is filled. | |
1744 * Stop conditions are we run out of | |
1745 * data or we max out our preload buffers. | |
1746 */ | |
1747 | |
1748 fprintf(stderr, "Filling buffer #%d (AL id is %d)\n", 0, data->buffer[0]); | |
1749 for(j=1; j<data->num_startup_buffers; j++) | |
1750 { | |
1751 fprintf(stderr, "Filling buffer #%d (AL id is %d)\n", j, data->buffer[j]); | |
1752 /* | |
1753 fprintf(stderr, ">>>>>>>>>>>>>>>>>>HACK for GetMoreData2\n"); | |
1754 */ | |
1755 bytes_returned = GetMoreData( | |
1756 data, | |
1757 data->buffer[j]); | |
1758 /* | |
1759 * This might be a problem. I made a mistake with the types. I accidentally | |
1760 * made the bytes returned an Sint32 and returned -1 on error. | |
1761 * Bytes returned should be a Uint32, so now I no longer have a -1 case | |
1762 * to check. I hope I didn't break anything here | |
1763 */ | |
1764 #if 0 | |
1765 if(bytes_returned < 0) | |
1766 { | |
1767 /* Error found */ | |
1768 ALmixer_SetError("Could not get data for additional startup buffers for PlayChannel: %s", ALmixer_GetError()); | |
1769 /* We'll continue on because we do have some valid data */ | |
1770 ret_flag = -1; | |
1771 break; | |
1772 } | |
1773 else if(0 == bytes_returned) | |
1774 #endif | |
1775 if(0 == bytes_returned) | |
1776 { | |
1777 /* No more data to buffer */ | |
1778 /* Check for loops */ | |
1779 if( ALmixer_Channel_List[channel].loops != 0 ) | |
1780 { | |
1781 fprintf(stderr, "Need to rewind. In RAMPUP, handling loop\n"); | |
1782 if(0 == Sound_Rewind(data->sample)) | |
1783 { | |
1784 fprintf(stderr, "error in rewind\n"); | |
1785 ALmixer_SetError( Sound_GetError() ); | |
1786 ALmixer_Channel_List[channel].loops = 0; | |
1787 ret_flag = -1; | |
1788 /* We'll continue on because we do have some valid data */ | |
1789 break; | |
1790 } | |
1791 /* Remember to reset the data->eof flag */ | |
1792 data->eof = 0; | |
1793 if(ALmixer_Channel_List[channel].loops > 0) | |
1794 { | |
1795 ALmixer_Channel_List[channel].loops--; | |
1796 fprintf(stderr, "Inside 000 >>>>>>>>>>Loops=%d\n", ALmixer_Channel_List[channel].loops); | |
1797 } | |
1798 /* Would like to redo the loop, but due to | |
1799 * Sound_Rewind() bugs, we would risk falling | |
1800 * into an infinite loop | |
1801 */ | |
1802 bytes_returned = GetMoreData( | |
1803 data, | |
1804 data->buffer[j]); | |
1805 if(bytes_returned <= 0) | |
1806 { | |
1807 ALmixer_SetError("Could not get data: %s", ALmixer_GetError()); | |
1808 /* We'll continue on because we do have some valid data */ | |
1809 ret_flag = -1; | |
1810 break; | |
1811 } | |
1812 } | |
1813 else | |
1814 { | |
1815 /* No loops to do so quit here */ | |
1816 break; | |
1817 } | |
1818 } | |
1819 /* Increment the number of buffers in use */ | |
1820 data->num_buffers_in_use++; | |
1821 } | |
1822 /* | |
1823 fprintf(stderr, "In PlayChannel, about to queue: source=%d, num_buffers_in_use=%d\n", | |
1824 ALmixer_Channel_List[channel].alsource, | |
1825 data->num_buffers_in_use); | |
1826 */ | |
1827 | |
1828 alSourceQueueBuffers( | |
1829 ALmixer_Channel_List[channel].alsource, | |
1830 data->num_buffers_in_use, | |
1831 data->buffer); | |
1832 if((error = alGetError()) != AL_NO_ERROR) | |
1833 { | |
1834 ALmixer_SetError("Could not bind data to source: %s", | |
1835 aluGetErrorString(error) ); | |
1836 Clean_Channel(channel); | |
1837 return -1; | |
1838 } | |
1839 /* This is part of the hideous Nvidia workaround. In order to figure out | |
1840 * which buffer to show during callbacks (for things like | |
1841 * o-scopes), I must keep a copy of the buffers that are queued in my own | |
1842 * data structure. This code will be called only if | |
1843 * "access_data" was set, indicated by whether the queue is NULL. | |
1844 */ | |
1845 if(data->circular_buffer_queue != NULL) | |
1846 { | |
1847 Uint32 k; | |
1848 Uint32 queue_ret_flag; | |
1849 for(k=0; k<data->num_buffers_in_use; k++) | |
1850 { | |
1851 queue_ret_flag = CircularQueueUnsignedInt_PushBack(data->circular_buffer_queue, data->buffer[k]); | |
1852 if(0 == queue_ret_flag) | |
1853 { | |
1854 fprintf(stderr, "Serious internal error: CircularQueue could not push into queue.\n"); | |
1855 ALmixer_SetError("Serious internal error: CircularQueue failed to push into queue"); | |
1856 } | |
1857 /* | |
1858 else | |
1859 { | |
1860 fprintf(stderr, "Queue in PlayTimed\n"); | |
1861 CircularQueueUnsignedInt_Print(data->circular_buffer_queue); | |
1862 } | |
1863 */ | |
1864 } | |
1865 } | |
1866 | |
1867 | |
1868 /****** END **********/ | |
1869 } | |
1870 /* We have finished loading the data (predecoded or queued) | |
1871 * so now we can play | |
1872 */ | |
1873 alSourcePlay(ALmixer_Channel_List[channel].alsource); | |
1874 if((error = alGetError()) != AL_NO_ERROR) | |
1875 { | |
1876 ALmixer_SetError("Play failed: %s", | |
1877 aluGetErrorString(error) ); | |
1878 Clean_Channel(channel); | |
1879 return -1; | |
1880 } | |
1881 | |
1882 /* Add to the counter that something is playing */ | |
1883 Is_Playing_global++; | |
1884 if(-1 == ret_flag) | |
1885 { | |
1886 fprintf(stderr, "BACKDOOR ERROR >>>>>>>>>>>>>>>>>>\n"); | |
1887 return -1; | |
1888 } | |
1889 return channel; | |
1890 } | |
1891 | |
1892 | |
1893 /* In case the user wants to specify a source instead of a channel, | |
1894 * they may use this function. This function will look up the | |
1895 * source-to-channel map, and convert the call into a | |
1896 * PlayChannelTimed() function call. | |
1897 * Returns the channel it's being played on. | |
1898 * Note: If you are prefer this method, then you need to be careful | |
1899 * about using PlayChannel, particularly if you request the | |
1900 * first available channels because source and channels have | |
1901 * a one-to-one mapping in this API. It is quite easy for | |
1902 * a channel/source to already be in use because of this. | |
1903 * In this event, an error message will be returned to you. | |
1904 */ | |
1905 static ALuint Internal_PlaySourceTimed(ALuint source, ALmixer_Data* data, Sint32 loops, Sint32 ticks) | |
1906 { | |
1907 Sint32 channel; | |
1908 Sint32 retval; | |
1909 if(0 == source) | |
1910 { | |
1911 retval = Internal_PlayChannelTimed(-1, data, loops, ticks); | |
1912 if(-1 == retval) | |
1913 { | |
1914 return 0; | |
1915 } | |
1916 else | |
1917 { | |
1918 return Internal_GetSource(retval); | |
1919 } | |
1920 } | |
1921 | |
1922 channel = Internal_GetChannel(source); | |
1923 if(-1 == channel) | |
1924 { | |
1925 ALmixer_SetError("Cannot Play source: %s", ALmixer_GetError()); | |
1926 return 0; | |
1927 } | |
1928 retval = Internal_PlayChannelTimed(channel, data, loops, ticks); | |
1929 if(-1 == retval) | |
1930 { | |
1931 return 0; | |
1932 } | |
1933 else | |
1934 { | |
1935 return source; | |
1936 } | |
1937 /* make compiler happy */ | |
1938 return 0; | |
1939 } | |
1940 | |
1941 | |
1942 | |
1943 /* Will return the number of channels halted | |
1944 * or 0 for error | |
1945 */ | |
1946 static Sint32 Internal_HaltChannel(Sint32 channel) | |
1947 { | |
1948 Sint32 retval = 0; | |
1949 Sint32 counter = 0; | |
1950 ALenum error; | |
1951 ALint buffers_still_queued; | |
1952 ALint buffers_processed; | |
1953 | |
1954 if(channel >= Number_of_Channels_global) | |
1955 { | |
1956 ALmixer_SetError("Cannot halt channel %d because it exceeds maximum number of channels (%d)\n", channel, Number_of_Channels_global); | |
1957 return -1; | |
1958 } | |
1959 /* If the user specified a specific channel */ | |
1960 if(channel >= 0) | |
1961 { | |
1962 fprintf(stderr, "Halt on channel %d\n", channel); | |
1963 /* only need to process channel if in use */ | |
1964 if(ALmixer_Channel_List[channel].channel_in_use) | |
1965 { | |
1966 alSourceStop(ALmixer_Channel_List[channel].alsource); | |
1967 if((error = alGetError()) != AL_NO_ERROR) | |
1968 { | |
1969 fprintf(stderr, "14Testing error: %s\n", | |
1970 aluGetErrorString(error)); | |
1971 } | |
1972 /* Here's the situation. My old method of using | |
1973 * alSourceUnqueueBuffers() seemed to be invalid in light | |
1974 * of all the problems I suffered through with getting | |
1975 * the CoreData backend to work with this code. | |
1976 * As such, I'm changing all the code to set the buffer to | |
1977 * AL_NONE. Furthermore, the queued vs. non-queued issue | |
1978 * doesn't need to apply here. For non-queued, Loki, | |
1979 * Creative Windows, and CoreAudio seem to leave the | |
1980 * buffer queued (Old Mac didn't.) For queued, we need to | |
1981 * remove the processed buffers and force remove the | |
1982 * still-queued buffers. | |
1983 */ | |
1984 fprintf(stderr, "Halt on channel %d, channel in use\n", channel); | |
1985 alGetSourcei( | |
1986 ALmixer_Channel_List[channel].alsource, | |
1987 AL_BUFFERS_QUEUED, &buffers_still_queued | |
1988 ); | |
1989 if((error = alGetError()) != AL_NO_ERROR) | |
1990 { | |
1991 fprintf(stderr, "17Testing Error with buffers_still_queued: %s", | |
1992 aluGetErrorString(error)); | |
1993 ALmixer_SetError("Failed detecting still queued buffers: %s", | |
1994 aluGetErrorString(error) ); | |
1995 retval = -1; | |
1996 } | |
1997 alGetSourcei( | |
1998 ALmixer_Channel_List[channel].alsource, | |
1999 AL_BUFFERS_PROCESSED, &buffers_processed | |
2000 ); | |
2001 if((error = alGetError()) != AL_NO_ERROR) | |
2002 { | |
2003 fprintf(stderr, "17Testing Error with buffers_processed: %s", | |
2004 aluGetErrorString(error)); | |
2005 ALmixer_SetError("Failed detecting still processed buffers: %s", | |
2006 aluGetErrorString(error) ); | |
2007 retval = -1; | |
2008 } | |
2009 /* If either of these is greater than 0, it means we need | |
2010 * to clear the source | |
2011 */ | |
2012 if((buffers_still_queued > 0) || (buffers_processed > 0)) | |
2013 { | |
2014 alSourcei(ALmixer_Channel_List[channel].alsource, | |
2015 AL_BUFFER, | |
2016 AL_NONE); | |
2017 if((error = alGetError()) != AL_NO_ERROR) | |
2018 { | |
2019 fprintf(stderr, "17Testing Error with clearing buffer from source: %s", | |
2020 aluGetErrorString(error)); | |
2021 ALmixer_SetError("Failed to clear buffer from source: %s", | |
2022 aluGetErrorString(error) ); | |
2023 retval = -1; | |
2024 } | |
2025 } | |
2026 | |
2027 ALmixer_Channel_List[channel].almixer_data->num_buffers_in_use = 0; | |
2028 | |
2029 Clean_Channel(channel); | |
2030 Is_Playing_global--; | |
2031 /* Launch callback for consistency? */ | |
2032 Invoke_Channel_Done_Callback(channel); | |
2033 counter++; | |
2034 } | |
2035 } | |
2036 /* The user wants to halt all channels */ | |
2037 else | |
2038 { | |
2039 Sint32 i; | |
2040 for(i=0; i<Number_of_Channels_global; i++) | |
2041 { | |
2042 fprintf(stderr, "Halting channel %d\n", i); | |
2043 fprintf(stderr, "in use %d\n", ALmixer_Channel_List[i].channel_in_use ); | |
2044 /* only need to process channel if in use */ | |
2045 if(ALmixer_Channel_List[i].channel_in_use) | |
2046 { | |
2047 fprintf(stderr, "SourceStop %d\n", i); | |
2048 alSourceStop(ALmixer_Channel_List[i].alsource); | |
2049 if((error = alGetError()) != AL_NO_ERROR) | |
2050 { | |
2051 fprintf(stderr, "19Testing error: %s\n", | |
2052 aluGetErrorString(error)); | |
2053 } | |
2054 | |
2055 /* Here's the situation. My old method of using | |
2056 * alSourceUnqueueBuffers() seemed to be invalid in light | |
2057 * of all the problems I suffered through with getting | |
2058 * the CoreData backend to work with this code. | |
2059 * As such, I'm changing all the code to set the buffer to | |
2060 * AL_NONE. Furthermore, the queued vs. non-queued issue | |
2061 * doesn't need to apply here. For non-queued, Loki, | |
2062 * Creative Windows, and CoreAudio seem to leave the | |
2063 * buffer queued (Old Mac didn't.) For queued, we need to | |
2064 * remove the processed buffers and force remove the | |
2065 * still-queued buffers. | |
2066 */ | |
2067 fprintf(stderr, "Halt on channel %d, channel in use\n", channel); | |
2068 alGetSourcei( | |
2069 ALmixer_Channel_List[i].alsource, | |
2070 AL_BUFFERS_QUEUED, &buffers_still_queued | |
2071 ); | |
2072 if((error = alGetError()) != AL_NO_ERROR) | |
2073 { | |
2074 fprintf(stderr, "17Testing Error with buffers_still_queued: %s", | |
2075 aluGetErrorString(error)); | |
2076 ALmixer_SetError("Failed detecting still queued buffers: %s", | |
2077 aluGetErrorString(error) ); | |
2078 retval = -1; | |
2079 } | |
2080 alGetSourcei( | |
2081 ALmixer_Channel_List[i].alsource, | |
2082 AL_BUFFERS_PROCESSED, &buffers_processed | |
2083 ); | |
2084 if((error = alGetError()) != AL_NO_ERROR) | |
2085 { | |
2086 fprintf(stderr, "17Testing Error with buffers_processed: %s", | |
2087 aluGetErrorString(error)); | |
2088 ALmixer_SetError("Failed detecting still processed buffers: %s", | |
2089 aluGetErrorString(error) ); | |
2090 retval = -1; | |
2091 } | |
2092 /* If either of these is greater than 0, it means we need | |
2093 * to clear the source | |
2094 */ | |
2095 if((buffers_still_queued > 0) || (buffers_processed > 0)) | |
2096 { | |
2097 alSourcei(ALmixer_Channel_List[i].alsource, | |
2098 AL_BUFFER, | |
2099 AL_NONE); | |
2100 if((error = alGetError()) != AL_NO_ERROR) | |
2101 { | |
2102 fprintf(stderr, "17Testing Error with clearing buffer from source: %s", | |
2103 aluGetErrorString(error)); | |
2104 ALmixer_SetError("Failed to clear buffer from source: %s", | |
2105 aluGetErrorString(error) ); | |
2106 retval = -1; | |
2107 } | |
2108 } | |
2109 | |
2110 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use = 0; | |
2111 | |
2112 fprintf(stderr, "Clean channel %d\n", i); | |
2113 Clean_Channel(i); | |
2114 Is_Playing_global--; | |
2115 /* Launch callback for consistency? */ | |
2116 fprintf(stderr, "Callback%d\n", i); | |
2117 Invoke_Channel_Done_Callback(i); | |
2118 | |
2119 /* Increment the counter */ | |
2120 counter++; | |
2121 } | |
2122 /* Let's halt everything just in case there | |
2123 * are bugs. | |
2124 */ | |
2125 /* | |
2126 else | |
2127 { | |
2128 alSourceStop(ALmixer_Channel_List[channel].alsource); | |
2129 / * Can't clean because the in_use counter for | |
2130 * data will get messed up * / | |
2131 Clean_Channel(channel); | |
2132 } | |
2133 */ | |
2134 /* Just in case */ | |
2135 Is_Playing_global = 0; | |
2136 } | |
2137 } | |
2138 if(-1 == retval) | |
2139 { | |
2140 return -1; | |
2141 } | |
2142 return counter; | |
2143 } | |
2144 | |
2145 | |
2146 /* Will return the source halted or the total number of channels | |
2147 * if all were halted or 0 for error | |
2148 */ | |
2149 static Sint32 Internal_HaltSource(ALuint source) | |
2150 { | |
2151 Sint32 channel; | |
2152 if(0 == source) | |
2153 { | |
2154 /* Will return the number of sources halted */ | |
2155 return Internal_HaltChannel(-1); | |
2156 } | |
2157 | |
2158 channel = Internal_GetChannel(source); | |
2159 if(-1 == channel) | |
2160 { | |
2161 ALmixer_SetError("Cannot halt source: %s", ALmixer_GetError()); | |
2162 return 0; | |
2163 } | |
2164 return Internal_HaltChannel(channel); | |
2165 } | |
2166 | |
2167 | |
2168 /* This will rewind the SDL_Sound sample for streamed | |
2169 * samples and start buffering up the data for the next | |
2170 * playback. This may require samples to be halted | |
2171 */ | |
2172 static Sint32 Internal_RewindData(ALmixer_Data* data) | |
2173 { | |
2174 Sint32 retval = 0; | |
2175 /* | |
2176 Sint32 bytes_returned; | |
2177 Sint32 i; | |
2178 */ | |
2179 if(NULL == data) | |
2180 { | |
2181 ALmixer_SetError("Cannot rewind because data is NULL\n"); | |
2182 return -1; | |
2183 } | |
2184 | |
2185 | |
2186 /* Might have to require Halt */ | |
2187 /* Okay, we assume Halt or natural stop has already | |
2188 * cleared the data buffers | |
2189 */ | |
2190 if(data->in_use) | |
2191 { | |
2192 fprintf(stderr, "Warning sample is in use. May not be able to rewind\n"); | |
2193 /* | |
2194 ALmixer_SetError("Data is in use. Cannot rewind unless all sources using the data are halted\n"); | |
2195 return -1; | |
2196 */ | |
2197 } | |
2198 | |
2199 | |
2200 /* Because Seek can alter things even in predecoded data, | |
2201 * decoded data must also be rewound | |
2202 */ | |
2203 if(data->decoded_all) | |
2204 { | |
2205 data->eof = 0; | |
2206 | |
2207 #if 0 | |
2208 #if defined(DISABLE_PREDECODED_SEEK) | |
2209 /* Since we can't seek predecoded stuff, it should be rewound */ | |
2210 return 0; | |
2211 #elif !defined(DISABLE_SEEK_MEMORY_OPTIMIZATION) | |
2212 /* This case is if the Sound_Sample has been deleted. | |
2213 * It assumes the data is already at the beginning. | |
2214 */ | |
2215 if(NULL == data->sample) | |
2216 { | |
2217 return 0; | |
2218 } | |
2219 /* Else, the sample has already been reallocated, | |
2220 * and we can fall to normal behavior | |
2221 */ | |
2222 #endif | |
2223 #endif | |
2224 /* If access_data, was enabled, the sound sample | |
2225 * still exists and we can do stuff. | |
2226 * If it's NULL, we can't do anything, but | |
2227 * it should already be "rewound". | |
2228 */ | |
2229 if(NULL == data->sample) | |
2230 { | |
2231 return 0; | |
2232 } | |
2233 /* Else, the sample has already been reallocated, | |
2234 * and we can fall to normal behavior | |
2235 */ | |
2236 | |
2237 Set_Predecoded_Seek_Position(data, 0); | |
2238 /* | |
2239 return data->total_bytes; | |
2240 */ | |
2241 return 0; | |
2242 } | |
2243 | |
2244 /* Remaining stuff for streamed data */ | |
2245 | |
2246 fprintf(stderr, "Rewinding for stream\n"); | |
2247 data->eof = 0; | |
2248 retval = Sound_Rewind(data->sample); | |
2249 if(0 == retval) | |
2250 { | |
2251 ALmixer_SetError( Sound_GetError() ); | |
2252 return -1; | |
2253 } | |
2254 fprintf(stderr, "Rewinding succeeded\n"); | |
2255 fprintf(stderr, "calling GetMoreData for Rewinding for stream\n"); | |
2256 #if 0 | |
2257 /* Clear error */ | |
2258 alGetError(); | |
2259 for(i=0; i<data->num_buffers; i++) | |
2260 { | |
2261 bytes_returned = GetMoreData(data, data->buffer[i]); | |
2262 if(-1 == bytes_returned) | |
2263 { | |
2264 return -1; | |
2265 } | |
2266 else if(0 == bytes_returned) | |
2267 { | |
2268 return -1; | |
2269 } | |
2270 retval += bytes_returned; | |
2271 | |
2272 } | |
2273 #endif | |
2274 | |
2275 | |
2276 fprintf(stderr, "end Rewinding for stream\n"); | |
2277 | |
2278 return retval; | |
2279 } | |
2280 | |
2281 | |
2282 | |
2283 | |
2284 static Sint32 Internal_RewindChannel(Sint32 channel) | |
2285 { | |
2286 Sint32 retval = 0; | |
2287 ALenum error; | |
2288 ALint state; | |
2289 | |
2290 if(channel >= Number_of_Channels_global) | |
2291 { | |
2292 ALmixer_SetError("Cannot rewind channel %d because it exceeds maximum number of channels (%d)\n", channel, Number_of_Channels_global); | |
2293 return -1; | |
2294 } | |
2295 | |
2296 if((error = alGetError()) != AL_NO_ERROR) | |
2297 { | |
2298 fprintf(stderr, "24Testing error: %s\n", | |
2299 aluGetErrorString(error)); | |
2300 } | |
2301 /* Clear error */ | |
2302 alGetError(); | |
2303 | |
2304 /* If the user specified a specific channel */ | |
2305 if(channel >= 0) | |
2306 { | |
2307 /* only need to process channel if in use */ | |
2308 if(ALmixer_Channel_List[channel].channel_in_use) | |
2309 { | |
2310 | |
2311 /* What should I do? Do I just rewind the channel | |
2312 * or also rewind the data? Since the data is | |
2313 * shared, let's make it the user's responsibility | |
2314 * to rewind the data. | |
2315 */ | |
2316 if(ALmixer_Channel_List[channel].almixer_data->decoded_all) | |
2317 { | |
2318 alGetSourcei( | |
2319 ALmixer_Channel_List[channel].alsource, | |
2320 AL_SOURCE_STATE, &state | |
2321 ); | |
2322 if((error = alGetError()) != AL_NO_ERROR) | |
2323 { | |
2324 fprintf(stderr, "25Testing error: %s\n", | |
2325 aluGetErrorString(error)); | |
2326 } | |
2327 alSourceRewind(ALmixer_Channel_List[channel].alsource); | |
2328 if((error = alGetError()) != AL_NO_ERROR) | |
2329 { | |
2330 ALmixer_SetError("%s", | |
2331 aluGetErrorString(error) ); | |
2332 retval = -1; | |
2333 } | |
2334 /* Need to resume playback if it was originally playing */ | |
2335 if(AL_PLAYING == state) | |
2336 { | |
2337 alSourcePlay(ALmixer_Channel_List[channel].alsource); | |
2338 if((error = alGetError()) != AL_NO_ERROR) | |
2339 { | |
2340 ALmixer_SetError("%s", | |
2341 aluGetErrorString(error) ); | |
2342 retval = -1; | |
2343 } | |
2344 } | |
2345 else if(AL_PAUSED == state) | |
2346 { | |
2347 /* HACK: The problem is that when paused, after | |
2348 * the Rewind, I can't get it off the INITIAL | |
2349 * state without restarting | |
2350 */ | |
2351 alSourcePlay(ALmixer_Channel_List[channel].alsource); | |
2352 if((error = alGetError()) != AL_NO_ERROR) | |
2353 { | |
2354 fprintf(stderr, "25Testing error: %s\n", | |
2355 aluGetErrorString(error)); | |
2356 } | |
2357 alSourcePause(ALmixer_Channel_List[channel].alsource); | |
2358 if((error = alGetError()) != AL_NO_ERROR) | |
2359 { | |
2360 ALmixer_SetError("%s", | |
2361 aluGetErrorString(error) ); | |
2362 retval = -1; | |
2363 } | |
2364 } | |
2365 } | |
2366 else | |
2367 { | |
2368 /* Streamed data is different. Rewinding the channel | |
2369 * does no good. Rewinding the data will have an | |
2370 * effect, but it will be lagged based on how | |
2371 * much data is queued. Recommend users call Halt | |
2372 * before rewind if they want immediate results. | |
2373 */ | |
2374 retval = Internal_RewindData(ALmixer_Channel_List[channel].almixer_data); | |
2375 } | |
2376 } | |
2377 } | |
2378 /* The user wants to halt all channels */ | |
2379 else | |
2380 { | |
2381 Sint32 i; | |
2382 for(i=0; i<Number_of_Channels_global; i++) | |
2383 { | |
2384 fprintf(stderr, "in use %d\n", ALmixer_Channel_List[i].channel_in_use ); | |
2385 /* only need to process channel if in use */ | |
2386 if(ALmixer_Channel_List[i].channel_in_use) | |
2387 { | |
2388 /* What should I do? Do I just rewind the channel | |
2389 * or also rewind the data? Since the data is | |
2390 * shared, let's make it the user's responsibility | |
2391 * to rewind the data. | |
2392 */ | |
2393 if(ALmixer_Channel_List[i].almixer_data->decoded_all) | |
2394 { | |
2395 alGetSourcei( | |
2396 ALmixer_Channel_List[i].alsource, | |
2397 AL_SOURCE_STATE, &state | |
2398 ); | |
2399 if((error = alGetError()) != AL_NO_ERROR) | |
2400 { | |
2401 fprintf(stderr, "26Testing error: %s\n", | |
2402 aluGetErrorString(error)); | |
2403 } | |
2404 alSourceRewind(ALmixer_Channel_List[i].alsource); | |
2405 if((error = alGetError()) != AL_NO_ERROR) | |
2406 { | |
2407 ALmixer_SetError("%s", | |
2408 aluGetErrorString(error) ); | |
2409 retval = -1; | |
2410 } | |
2411 /* Need to resume playback if it was originally playing */ | |
2412 if(AL_PLAYING == state) | |
2413 { | |
2414 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
2415 if((error = alGetError()) != AL_NO_ERROR) | |
2416 { | |
2417 ALmixer_SetError("%s", | |
2418 aluGetErrorString(error) ); | |
2419 retval = -1; | |
2420 } | |
2421 } | |
2422 else if(AL_PAUSED == state) | |
2423 { | |
2424 /* HACK: The problem is that when paused, after | |
2425 * the Rewind, I can't get it off the INITIAL | |
2426 * state without restarting | |
2427 */ | |
2428 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
2429 if((error = alGetError()) != AL_NO_ERROR) | |
2430 { | |
2431 fprintf(stderr, "27Testing error: %s\n", | |
2432 aluGetErrorString(error)); | |
2433 } | |
2434 alSourcePause(ALmixer_Channel_List[i].alsource); | |
2435 if((error = alGetError()) != AL_NO_ERROR) | |
2436 { | |
2437 ALmixer_SetError("%s", | |
2438 aluGetErrorString(error) ); | |
2439 retval = -1; | |
2440 } | |
2441 } | |
2442 } | |
2443 else | |
2444 { | |
2445 /* Streamed data is different. Rewinding the channel | |
2446 * does no good. Rewinding the data will have an | |
2447 * effect, but it will be lagged based on how | |
2448 * much data is queued. Recommend users call Halt | |
2449 * before rewind if they want immediate results. | |
2450 */ | |
2451 retval = Internal_RewindData(ALmixer_Channel_List[i].almixer_data); | |
2452 } | |
2453 } | |
2454 } | |
2455 } | |
2456 return retval; | |
2457 } | |
2458 | |
2459 | |
2460 static Sint32 Internal_RewindSource(ALuint source) | |
2461 { | |
2462 Sint32 channel; | |
2463 if(0 == source) | |
2464 { | |
2465 return Internal_RewindChannel(-1); | |
2466 } | |
2467 | |
2468 channel = Internal_GetChannel(source); | |
2469 if(-1 == channel) | |
2470 { | |
2471 ALmixer_SetError("Cannot rewind source: %s", ALmixer_GetError()); | |
2472 return 0; | |
2473 } | |
2474 return Internal_RewindChannel(channel); | |
2475 } | |
2476 | |
2477 | |
2478 | |
2479 /* Returns the channel or number of channels actually paused */ | |
2480 | |
2481 static Sint32 Internal_PauseChannel(Sint32 channel) | |
2482 { | |
2483 ALenum error; | |
2484 ALint state; | |
2485 Sint32 retval = 0; | |
2486 Sint32 counter = 0; | |
2487 | |
2488 if(channel >= Number_of_Channels_global) | |
2489 { | |
2490 ALmixer_SetError("Cannot pause channel %d because it exceeds maximum number of channels (%d)\n", channel, Number_of_Channels_global); | |
2491 return -1; | |
2492 } | |
2493 | |
2494 if((error = alGetError()) != AL_NO_ERROR) | |
2495 { | |
2496 fprintf(stderr, "28Testing error: %s\n", | |
2497 aluGetErrorString(error)); | |
2498 } | |
2499 /* Clear error */ | |
2500 alGetError(); | |
2501 | |
2502 /* If the user specified a specific channel */ | |
2503 if(channel >= 0) | |
2504 { | |
2505 fprintf(stderr, "Pause on channel %d\n", channel); | |
2506 /* only need to process channel if in use */ | |
2507 if(ALmixer_Channel_List[channel].channel_in_use) | |
2508 { | |
2509 /* We don't want to repause if already | |
2510 * paused because the fadeout/expire | |
2511 * timing will get messed up | |
2512 */ | |
2513 alGetSourcei( | |
2514 ALmixer_Channel_List[channel].alsource, | |
2515 AL_SOURCE_STATE, &state | |
2516 ); | |
2517 if((error = alGetError()) != AL_NO_ERROR) | |
2518 { | |
2519 fprintf(stderr, "29Testing error: %s\n", | |
2520 aluGetErrorString(error)); | |
2521 } | |
2522 if(AL_PLAYING == state) | |
2523 { | |
2524 /* Count the actual number of channels being paused */ | |
2525 counter++; | |
2526 | |
2527 alSourcePause(ALmixer_Channel_List[channel].alsource); | |
2528 if((error = alGetError()) != AL_NO_ERROR) | |
2529 { | |
2530 ALmixer_SetError("%s", | |
2531 aluGetErrorString(error) ); | |
2532 retval = -1; | |
2533 } | |
2534 /* We need to pause the expire time count down */ | |
2535 if(ALmixer_Channel_List[channel].expire_ticks != -1) | |
2536 { | |
2537 Uint32 current_time = SDL_GetTicks(); | |
2538 Uint32 diff_time; | |
2539 diff_time = current_time - | |
2540 ALmixer_Channel_List[channel].start_time; | |
2541 /* When we unpause, we will want to reset | |
2542 * the start time so we can continue | |
2543 * to base calculations off GetTicks(). | |
2544 * This means we need to subtract the amount | |
2545 * of time already used up from expire_ticks. | |
2546 */ | |
2547 ALmixer_Channel_List[channel].expire_ticks = | |
2548 ALmixer_Channel_List[channel].expire_ticks - | |
2549 diff_time; | |
2550 /* Because -1 is a special value, we can't | |
2551 * allow the time to go negative | |
2552 */ | |
2553 if(ALmixer_Channel_List[channel].expire_ticks < 0) | |
2554 { | |
2555 ALmixer_Channel_List[channel].expire_ticks = 0; | |
2556 } | |
2557 } | |
2558 /* Do the same as expire time for fading */ | |
2559 if(ALmixer_Channel_List[channel].fade_enabled) | |
2560 { | |
2561 Uint32 current_time = SDL_GetTicks(); | |
2562 Uint32 diff_time; | |
2563 diff_time = current_time - | |
2564 ALmixer_Channel_List[channel].fade_start_time; | |
2565 /* When we unpause, we will want to reset | |
2566 * the start time so we can continue | |
2567 * to base calculations off GetTicks(). | |
2568 * This means we need to subtract the amount | |
2569 * of time already used up from expire_ticks. | |
2570 */ | |
2571 ALmixer_Channel_List[channel].fade_expire_ticks = | |
2572 ALmixer_Channel_List[channel].fade_expire_ticks - | |
2573 diff_time; | |
2574 /* Don't allow the time to go negative */ | |
2575 if(ALmixer_Channel_List[channel].expire_ticks < 0) | |
2576 { | |
2577 ALmixer_Channel_List[channel].expire_ticks = 0; | |
2578 } | |
2579 } /* End fade check */ | |
2580 } /* End if PLAYING */ | |
2581 } /* End If in use */ | |
2582 } /* End specific channel */ | |
2583 /* The user wants to halt all channels */ | |
2584 else | |
2585 { | |
2586 Sint32 i; | |
2587 for(i=0; i<Number_of_Channels_global; i++) | |
2588 { | |
2589 fprintf(stderr, "Pausing channel %d\n", i); | |
2590 fprintf(stderr, "in use %d\n", ALmixer_Channel_List[i].channel_in_use ); | |
2591 /* only need to process channel if in use */ | |
2592 if(ALmixer_Channel_List[i].channel_in_use) | |
2593 { | |
2594 /* We don't want to repause if already | |
2595 * paused because the fadeout/expire | |
2596 * timing will get messed up | |
2597 */ | |
2598 alGetSourcei( | |
2599 ALmixer_Channel_List[i].alsource, | |
2600 AL_SOURCE_STATE, &state | |
2601 ); | |
2602 if((error = alGetError()) != AL_NO_ERROR) | |
2603 { | |
2604 fprintf(stderr, "30Testing error: %s\n", | |
2605 aluGetErrorString(error)); | |
2606 } | |
2607 if(AL_PLAYING == state) | |
2608 { | |
2609 /* Count the actual number of channels being paused */ | |
2610 counter++; | |
2611 | |
2612 fprintf(stderr, "SourcePause %d\n", i); | |
2613 alSourcePause(ALmixer_Channel_List[i].alsource); | |
2614 if((error = alGetError()) != AL_NO_ERROR) | |
2615 { | |
2616 ALmixer_SetError("%s", | |
2617 aluGetErrorString(error) ); | |
2618 retval = -1; | |
2619 } | |
2620 /* We need to pause the expire time count down */ | |
2621 if(ALmixer_Channel_List[i].expire_ticks != -1) | |
2622 { | |
2623 Uint32 current_time = SDL_GetTicks(); | |
2624 Uint32 diff_time; | |
2625 diff_time = current_time - | |
2626 ALmixer_Channel_List[i].start_time; | |
2627 /* When we unpause, we will want to reset | |
2628 * the start time so we can continue | |
2629 * to base calculations off GetTicks(). | |
2630 * This means we need to subtract the amount | |
2631 * of time already used up from expire_ticks. | |
2632 */ | |
2633 ALmixer_Channel_List[i].expire_ticks = | |
2634 ALmixer_Channel_List[i].expire_ticks - | |
2635 diff_time; | |
2636 /* Because -1 is a special value, we can't | |
2637 * allow the time to go negative | |
2638 */ | |
2639 if(ALmixer_Channel_List[i].expire_ticks < 0) | |
2640 { | |
2641 ALmixer_Channel_List[i].expire_ticks = 0; | |
2642 } | |
2643 } | |
2644 /* Do the same as expire time for fading */ | |
2645 if(ALmixer_Channel_List[i].fade_enabled) | |
2646 { | |
2647 Uint32 current_time = SDL_GetTicks(); | |
2648 Uint32 diff_time; | |
2649 diff_time = current_time - | |
2650 ALmixer_Channel_List[i].fade_start_time; | |
2651 /* When we unpause, we will want to reset | |
2652 * the start time so we can continue | |
2653 * to base calculations off GetTicks(). | |
2654 * This means we need to subtract the amount | |
2655 * of time already used up from expire_ticks. | |
2656 */ | |
2657 ALmixer_Channel_List[i].fade_expire_ticks = | |
2658 ALmixer_Channel_List[i].fade_expire_ticks - | |
2659 diff_time; | |
2660 /* Don't allow the time to go negative */ | |
2661 if(ALmixer_Channel_List[i].expire_ticks < 0) | |
2662 { | |
2663 ALmixer_Channel_List[i].expire_ticks = 0; | |
2664 } | |
2665 } /* End fade check */ | |
2666 } /* End if PLAYING */ | |
2667 } /* End channel in use */ | |
2668 } /* End for-loop */ | |
2669 } | |
2670 if(-1 == retval) | |
2671 { | |
2672 return -1; | |
2673 } | |
2674 return counter; | |
2675 } | |
2676 | |
2677 /* Returns the channel or number of channels actually paused */ | |
2678 static Sint32 Internal_PauseSource(ALuint source) | |
2679 { | |
2680 Sint32 channel; | |
2681 if(0 == source) | |
2682 { | |
2683 return Internal_PauseChannel(-1); | |
2684 } | |
2685 | |
2686 channel = Internal_GetChannel(source); | |
2687 if(-1 == channel) | |
2688 { | |
2689 ALmixer_SetError("Cannot pause source: %s", ALmixer_GetError()); | |
2690 return -1; | |
2691 } | |
2692 return Internal_PauseChannel(channel); | |
2693 } | |
2694 | |
2695 | |
2696 | |
2697 static Sint32 Internal_ResumeChannel(Sint32 channel) | |
2698 { | |
2699 ALint state; | |
2700 ALenum error; | |
2701 Sint32 retval = 0; | |
2702 Sint32 counter = 0; | |
2703 | |
2704 if(channel >= Number_of_Channels_global) | |
2705 { | |
2706 ALmixer_SetError("Cannot pause channel %d because it exceeds maximum number of channels (%d)\n", channel, Number_of_Channels_global); | |
2707 return -1; | |
2708 } | |
2709 | |
2710 if((error = alGetError()) != AL_NO_ERROR) | |
2711 { | |
2712 fprintf(stderr, "31Testing error: %s\n", | |
2713 aluGetErrorString(error)); | |
2714 } | |
2715 /* Clear error */ | |
2716 alGetError(); | |
2717 | |
2718 /* If the user specified a specific channel */ | |
2719 if(channel >= 0) | |
2720 { | |
2721 fprintf(stderr, "Pause on channel %d\n", channel); | |
2722 /* only need to process channel if in use */ | |
2723 if(ALmixer_Channel_List[channel].channel_in_use) | |
2724 { | |
2725 alGetSourcei( | |
2726 ALmixer_Channel_List[channel].alsource, | |
2727 AL_SOURCE_STATE, &state | |
2728 ); | |
2729 if((error = alGetError()) != AL_NO_ERROR) | |
2730 { | |
2731 fprintf(stderr, "32Testing error: %s\n", | |
2732 aluGetErrorString(error)); | |
2733 } | |
2734 if(AL_PAUSED == state) | |
2735 { | |
2736 /* Count the actual number of channels resumed */ | |
2737 counter++; | |
2738 | |
2739 /* We need to resume the expire time count down */ | |
2740 if(ALmixer_Channel_List[channel].expire_ticks != -1) | |
2741 { | |
2742 ALmixer_Channel_List[channel].start_time = SDL_GetTicks(); | |
2743 } | |
2744 /* Do the same as expire time for fading */ | |
2745 if(ALmixer_Channel_List[channel].fade_enabled) | |
2746 { | |
2747 ALmixer_Channel_List[channel].fade_start_time = SDL_GetTicks(); | |
2748 } | |
2749 | |
2750 alSourcePlay(ALmixer_Channel_List[channel].alsource); | |
2751 if((error = alGetError()) != AL_NO_ERROR) | |
2752 { | |
2753 ALmixer_SetError("%s", | |
2754 aluGetErrorString(error) ); | |
2755 retval = -1; | |
2756 } | |
2757 } | |
2758 fprintf(stderr, "Pause on channel %d, channel in use\n", channel); | |
2759 } | |
2760 } | |
2761 /* The user wants to halt all channels */ | |
2762 else | |
2763 { | |
2764 Sint32 i; | |
2765 for(i=0; i<Number_of_Channels_global; i++) | |
2766 { | |
2767 fprintf(stderr, "Pausing channel %d\n", i); | |
2768 fprintf(stderr, "in use %d\n", ALmixer_Channel_List[i].channel_in_use ); | |
2769 /* only need to process channel if in use */ | |
2770 if(ALmixer_Channel_List[i].channel_in_use) | |
2771 { | |
2772 fprintf(stderr, "SourcePause %d\n", i); | |
2773 alGetSourcei( | |
2774 ALmixer_Channel_List[i].alsource, | |
2775 AL_SOURCE_STATE, &state | |
2776 ); | |
2777 if((error = alGetError()) != AL_NO_ERROR) | |
2778 { | |
2779 fprintf(stderr, "33Testing error: %s\n", | |
2780 aluGetErrorString(error)); | |
2781 } | |
2782 if(AL_PAUSED == state) | |
2783 { | |
2784 /* Count the actual number of channels resumed */ | |
2785 counter++; | |
2786 | |
2787 /* We need to resume the expire time count down */ | |
2788 if(ALmixer_Channel_List[i].expire_ticks != -1) | |
2789 { | |
2790 ALmixer_Channel_List[i].start_time = SDL_GetTicks(); | |
2791 } | |
2792 /* Do the same as expire time for fading */ | |
2793 if(ALmixer_Channel_List[i].fade_enabled) | |
2794 { | |
2795 ALmixer_Channel_List[i].fade_start_time = SDL_GetTicks(); | |
2796 } | |
2797 | |
2798 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
2799 if((error = alGetError()) != AL_NO_ERROR) | |
2800 { | |
2801 ALmixer_SetError("%s", | |
2802 aluGetErrorString(error) ); | |
2803 retval = -1; | |
2804 } | |
2805 } | |
2806 } | |
2807 } | |
2808 } | |
2809 if(-1 == retval) | |
2810 { | |
2811 return -1; | |
2812 } | |
2813 return counter; | |
2814 } | |
2815 | |
2816 | |
2817 static Sint32 Internal_ResumeSource(ALuint source) | |
2818 { | |
2819 Sint32 channel; | |
2820 if(0 == source) | |
2821 { | |
2822 return Internal_ResumeChannel(-1); | |
2823 } | |
2824 | |
2825 channel = Internal_GetChannel(source); | |
2826 if(-1 == channel) | |
2827 { | |
2828 ALmixer_SetError("Cannot resume source: %s", ALmixer_GetError()); | |
2829 return -1; | |
2830 } | |
2831 return Internal_ResumeChannel(channel); | |
2832 } | |
2833 | |
2834 | |
2835 /* Might consider setting eof to 0 as a "feature" | |
2836 * This will allow seek to end to stay there because | |
2837 * Play automatically rewinds if at the end */ | |
2838 static Sint32 Internal_Seek(ALmixer_Data* data, Uint32 msec) | |
2839 { | |
2840 Sint32 retval; | |
2841 | |
2842 if(NULL == data) | |
2843 { | |
2844 ALmixer_SetError("Cannot Seek because data is NULL"); | |
2845 return -1; | |
2846 } | |
2847 | |
2848 /* Seek for predecoded files involves moving the chunk pointer around */ | |
2849 if(data->decoded_all) | |
2850 { | |
2851 Uint32 byte_position; | |
2852 | |
2853 /* OpenAL doesn't seem to like it if I change the buffer | |
2854 * while playing (crashes), so I must require that Seek only | |
2855 * be done when the data is not in use. | |
2856 * Since data may be shared among multiple sources, | |
2857 * I can't shut them down myself, so I have to return an error. | |
2858 */ | |
2859 if(data->in_use) | |
2860 { | |
2861 ALmixer_SetError("Cannot seek on predecoded data while instances are playing"); | |
2862 return -1; | |
2863 } | |
2864 #if 0 | |
2865 #if defined(DISABLE_PREDECODED_SEEK) | |
2866 ALmixer_SetError("Seek support for predecoded samples was not compiled in"); | |
2867 return -1; | |
2868 | |
2869 #elif !defined(DISABLE_SEEK_MEMORY_OPTIMIZATION) | |
2870 /* By default, ALmixer frees the Sound_Sample for predecoded | |
2871 * samples because of the potential memory waste. | |
2872 * However, to seek a sample, we need to have a full | |
2873 * copy of the data around. So the strategy is to | |
2874 * recreate a hackish Sound_Sample to be used for seeking | |
2875 * purposes. If Sound_Sample is NULL, we will reallocate | |
2876 * memory for it and then procede as if everything | |
2877 * was normal. | |
2878 */ | |
2879 if(NULL == data->sample) | |
2880 { | |
2881 if( -1 == Reconstruct_Sound_Sample(data) ) | |
2882 { | |
2883 return -1; | |
2884 } | |
2885 } | |
2886 #endif | |
2887 #endif | |
2888 /* If access_data was set, then we still have the | |
2889 * Sound_Sample and we can move around in the data. | |
2890 * If it was not set, the data has been freed and we | |
2891 * cannot do anything because there is no way to | |
2892 * recover the data because OpenAL won't let us | |
2893 * get access to the buffers | |
2894 */ | |
2895 if(NULL == data->sample) | |
2896 { | |
2897 ALmixer_SetError("Cannot seek because access_data flag was set false when data was initialized"); | |
2898 return -1; | |
2899 } | |
2900 | |
2901 fprintf(stderr, "Calling convert\n"); | |
2902 byte_position = Convert_Msec_To_Byte_Pos(&data->sample->desired, msec); | |
2903 fprintf(stderr, "Calling Set_Predecoded_Seek...%d\n", byte_position); | |
2904 return( Set_Predecoded_Seek_Position(data, byte_position) ); | |
2905 } | |
2906 else | |
2907 { | |
2908 /* Reset eof flag?? */ | |
2909 data->eof = 0; | |
2910 retval = Sound_Seek(data->sample, msec); | |
2911 if(0 == retval) | |
2912 { | |
2913 ALmixer_SetError(Sound_GetError()); | |
2914 | |
2915 fprintf(stderr, "Sound seek error: %s\n", ALmixer_GetError()); | |
2916 /* Try rewinding to clean up? */ | |
2917 /* | |
2918 Internal_RewindData(data); | |
2919 */ | |
2920 return -1; | |
2921 } | |
2922 return 0; | |
2923 } | |
2924 | |
2925 return 0; | |
2926 } | |
2927 | |
2928 | |
2929 | |
2930 static Sint32 Internal_FadeInChannelTimed(Sint32 channel, ALmixer_Data* data, Sint32 loops, Uint32 fade_ticks, Sint32 expire_ticks) | |
2931 { | |
2932 ALfloat value; | |
2933 ALenum error; | |
2934 ALfloat original_value; | |
2935 Uint32 current_time = SDL_GetTicks(); | |
2936 Sint32 retval; | |
2937 | |
2938 | |
2939 | |
2940 if(channel >= Number_of_Channels_global) | |
2941 { | |
2942 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
2943 return -1; | |
2944 } | |
2945 /* Let's call PlayChannelTimed to do the job. | |
2946 * There are two catches: | |
2947 * First is that we must set the volumes before the play call(s). | |
2948 * Second is that we must initialize the channel values | |
2949 */ | |
2950 | |
2951 if(channel < 0) | |
2952 { | |
2953 /* This might cause a problem for threads/race conditions. | |
2954 * We need to set the volume on an unknown channel, | |
2955 * so we need to request a channel first. Remember | |
2956 * that requesting a channel doesn't lock and it | |
2957 * could be surrendered to somebody else before we claim it. | |
2958 */ | |
2959 channel = Internal_GetChannel(0); | |
2960 if(-1 == channel) | |
2961 { | |
2962 return -1; | |
2963 } | |
2964 } | |
2965 else if(ALmixer_Channel_List[channel].channel_in_use) | |
2966 { | |
2967 ALmixer_SetError("Channel %d is already in use", channel); | |
2968 return -1; | |
2969 } | |
2970 | |
2971 | |
2972 /* Get the original volume in case of a problem */ | |
2973 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
2974 AL_MAX_GAIN, &original_value); | |
2975 | |
2976 if((error = alGetError()) != AL_NO_ERROR) | |
2977 { | |
2978 fprintf(stderr, "35Testing error: %s\n", | |
2979 aluGetErrorString(error)); | |
2980 } | |
2981 /* Get the Max volume */ | |
2982 /* | |
2983 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
2984 AL_MAX_GAIN, &value); | |
2985 ALmixer_Channel_List[channel].fade_end_volume = value; | |
2986 */ | |
2987 ALmixer_Channel_List[channel].fade_end_volume = | |
2988 ALmixer_Channel_List[channel].max_volume; | |
2989 | |
2990 fprintf(stderr, "MAX gain: %f\n", value); | |
2991 /* Get the Min volume */ | |
2992 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
2993 AL_MIN_GAIN, &value); | |
2994 if((error = alGetError()) != AL_NO_ERROR) | |
2995 { | |
2996 fprintf(stderr, "36Testing error: %s\n", | |
2997 aluGetErrorString(error)); | |
2998 } | |
2999 ALmixer_Channel_List[channel].fade_start_volume = value; | |
3000 fprintf(stderr, "MIN gain: %f\n", value); | |
3001 | |
3002 /* Set the actual volume */ | |
3003 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3004 AL_MAX_GAIN, value); | |
3005 if((error = alGetError()) != AL_NO_ERROR) | |
3006 { | |
3007 fprintf(stderr, "37Testing error: %s\n", | |
3008 aluGetErrorString(error)); | |
3009 } | |
3010 | |
3011 | |
3012 /* Now call PlayChannelTimed */ | |
3013 retval = Internal_PlayChannelTimed(channel, data, loops, expire_ticks); | |
3014 if(-1 == retval) | |
3015 { | |
3016 /* Chance of failure is actually pretty high since | |
3017 * a channel might already be in use or streamed | |
3018 * data can be shared | |
3019 */ | |
3020 /* Restore the original value to avoid accidental | |
3021 * distruption of playback | |
3022 */ | |
3023 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3024 AL_MAX_GAIN, original_value); | |
3025 if((error = alGetError()) != AL_NO_ERROR) | |
3026 { | |
3027 fprintf(stderr, "38Testing error: %s\n", | |
3028 aluGetErrorString(error)); | |
3029 } | |
3030 return retval; | |
3031 } | |
3032 | |
3033 /* We can't accept 0 as a value because of div-by-zero. | |
3034 * If zero, just call PlayChannelTimed at normal | |
3035 * volume | |
3036 */ | |
3037 if(0 == fade_ticks) | |
3038 { | |
3039 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3040 AL_MAX_GAIN, | |
3041 ALmixer_Channel_List[channel].fade_end_volume | |
3042 ); | |
3043 if((error = alGetError()) != AL_NO_ERROR) | |
3044 { | |
3045 fprintf(stderr, "39Testing error: %s\n", | |
3046 aluGetErrorString(error)); | |
3047 } | |
3048 | |
3049 return retval; | |
3050 } | |
3051 | |
3052 /* Enable fading effects via the flag */ | |
3053 ALmixer_Channel_List[channel].fade_enabled = 1; | |
3054 /* Set fade start time */ | |
3055 ALmixer_Channel_List[channel].fade_start_time | |
3056 = ALmixer_Channel_List[channel].start_time; | |
3057 fprintf(stderr, "Current time =%d\n", current_time); | |
3058 /* Set the fade expire ticks */ | |
3059 ALmixer_Channel_List[channel].fade_expire_ticks = fade_ticks; | |
3060 | |
3061 /* Set 1/(endtime-starttime) or 1/deltaT */ | |
3062 ALmixer_Channel_List[channel].fade_inv_time = 1.0f / fade_ticks; | |
3063 | |
3064 return retval; | |
3065 | |
3066 } | |
3067 | |
3068 | |
3069 static ALuint Internal_FadeInSourceTimed(ALuint source, ALmixer_Data* data, Sint32 loops, Uint32 fade_ticks, Sint32 expire_ticks) | |
3070 { | |
3071 Sint32 channel; | |
3072 Sint32 retval; | |
3073 if(0 == source) | |
3074 { | |
3075 retval = Internal_FadeInChannelTimed(-1, data, loops, fade_ticks, expire_ticks); | |
3076 if(-1 == retval) | |
3077 { | |
3078 return 0; | |
3079 } | |
3080 else | |
3081 { | |
3082 return Internal_GetSource(retval); | |
3083 } | |
3084 } | |
3085 | |
3086 channel = Internal_GetChannel(source); | |
3087 if(-1 == channel) | |
3088 { | |
3089 ALmixer_SetError("Cannot FadeIn source: %s", ALmixer_GetError()); | |
3090 return 0; | |
3091 } | |
3092 retval = Internal_FadeInChannelTimed(channel, data, loops, fade_ticks, expire_ticks); | |
3093 if(-1 == retval) | |
3094 { | |
3095 return 0; | |
3096 } | |
3097 else | |
3098 { | |
3099 return source; | |
3100 } | |
3101 /* make compiler happy */ | |
3102 return 0; | |
3103 } | |
3104 | |
3105 | |
3106 | |
3107 | |
3108 /* Will fade out currently playing channels. | |
3109 * It starts at the current volume level and goes down */ | |
3110 static Sint32 Internal_FadeOutChannel(Sint32 channel, Uint32 ticks) | |
3111 { | |
3112 ALfloat value; | |
3113 ALenum error; | |
3114 Uint32 current_time = SDL_GetTicks(); | |
3115 Uint32 counter = 0; | |
3116 | |
3117 /* We can't accept 0 as a value because of div-by-zero. | |
3118 * If zero, just call Halt at normal | |
3119 * volume | |
3120 */ | |
3121 if(0 == ticks) | |
3122 { | |
3123 return Internal_HaltChannel(channel); | |
3124 } | |
3125 | |
3126 | |
3127 if(channel >= Number_of_Channels_global) | |
3128 { | |
3129 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3130 return -1; | |
3131 } | |
3132 | |
3133 if(channel >= 0) | |
3134 { | |
3135 if(ALmixer_Channel_List[channel].channel_in_use) | |
3136 { | |
3137 /* Get the current volume */ | |
3138 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
3139 AL_MAX_GAIN, &value); | |
3140 ALmixer_Channel_List[channel].fade_start_volume = value; | |
3141 if((error = alGetError()) != AL_NO_ERROR) | |
3142 { | |
3143 fprintf(stderr, "40Testing error: %s\n", | |
3144 aluGetErrorString(error)); | |
3145 } | |
3146 | |
3147 /* Get the Min volume */ | |
3148 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
3149 AL_MIN_GAIN, &value); | |
3150 if((error = alGetError()) != AL_NO_ERROR) | |
3151 { | |
3152 fprintf(stderr, "41Testing error: %s\n", | |
3153 aluGetErrorString(error)); | |
3154 } | |
3155 ALmixer_Channel_List[channel].fade_end_volume = value; | |
3156 fprintf(stderr, "MIN gain: %f\n", value); | |
3157 | |
3158 /* Set expire start time */ | |
3159 ALmixer_Channel_List[channel].start_time = current_time; | |
3160 /* Set the expire ticks */ | |
3161 ALmixer_Channel_List[channel].expire_ticks = ticks; | |
3162 /* Set fade start time */ | |
3163 ALmixer_Channel_List[channel].fade_start_time = current_time; | |
3164 /* Set the fade expire ticks */ | |
3165 ALmixer_Channel_List[channel].fade_expire_ticks = ticks; | |
3166 /* Enable fading effects via the flag */ | |
3167 ALmixer_Channel_List[channel].fade_enabled = 1; | |
3168 | |
3169 /* Set 1/(endtime-starttime) or 1/deltaT */ | |
3170 ALmixer_Channel_List[channel].fade_inv_time = 1.0f / ticks; | |
3171 | |
3172 counter++; | |
3173 } | |
3174 } | |
3175 /* Else need to fade out all channels */ | |
3176 else | |
3177 { | |
3178 Sint32 i; | |
3179 for(i=0; i<Number_of_Channels_global; i++) | |
3180 { | |
3181 if(ALmixer_Channel_List[i].channel_in_use) | |
3182 { | |
3183 /* Get the current volume */ | |
3184 alGetSourcef(ALmixer_Channel_List[i].alsource, | |
3185 AL_MAX_GAIN, &value); | |
3186 ALmixer_Channel_List[i].fade_start_volume = value; | |
3187 if((error = alGetError()) != AL_NO_ERROR) | |
3188 { | |
3189 fprintf(stderr, "42Testing error: %s\n", | |
3190 aluGetErrorString(error)); | |
3191 } | |
3192 | |
3193 /* Get the Min volume */ | |
3194 alGetSourcef(ALmixer_Channel_List[i].alsource, | |
3195 AL_MIN_GAIN, &value); | |
3196 if((error = alGetError()) != AL_NO_ERROR) | |
3197 { | |
3198 fprintf(stderr, "43Testing error: %s\n", | |
3199 aluGetErrorString(error)); | |
3200 } | |
3201 ALmixer_Channel_List[i].fade_end_volume = value; | |
3202 fprintf(stderr, "MIN gain: %f\n", value); | |
3203 | |
3204 /* Set expire start time */ | |
3205 ALmixer_Channel_List[i].start_time = current_time; | |
3206 /* Set the expire ticks */ | |
3207 ALmixer_Channel_List[i].expire_ticks = ticks; | |
3208 /* Set fade start time */ | |
3209 ALmixer_Channel_List[i].fade_start_time = current_time; | |
3210 /* Set the fade expire ticks */ | |
3211 ALmixer_Channel_List[i].fade_expire_ticks = ticks; | |
3212 /* Enable fading effects via the flag */ | |
3213 ALmixer_Channel_List[i].fade_enabled = 1; | |
3214 | |
3215 /* Set 1/(endtime-starttime) or 1/deltaT */ | |
3216 ALmixer_Channel_List[i].fade_inv_time = 1.0f / ticks; | |
3217 | |
3218 counter++; | |
3219 } | |
3220 } /* End for loop */ | |
3221 } | |
3222 return counter; | |
3223 } | |
3224 | |
3225 | |
3226 static Sint32 Internal_FadeOutSource(ALuint source, Uint32 ticks) | |
3227 { | |
3228 Sint32 channel; | |
3229 if(0 == source) | |
3230 { | |
3231 return Internal_FadeOutChannel(-1, ticks); | |
3232 } | |
3233 | |
3234 channel = Internal_GetChannel(source); | |
3235 if(-1 == channel) | |
3236 { | |
3237 ALmixer_SetError("Cannot FadeOut source: %s", ALmixer_GetError()); | |
3238 return -1; | |
3239 } | |
3240 return Internal_FadeOutChannel(channel, ticks); | |
3241 } | |
3242 | |
3243 | |
3244 /* Will fade currently playing channels. | |
3245 * It starts at the current volume level and go to target | |
3246 * Only affects channels that are playing | |
3247 */ | |
3248 static Sint32 Internal_FadeChannel(Sint32 channel, Uint32 ticks, ALfloat volume) | |
3249 { | |
3250 ALfloat value; | |
3251 ALenum error; | |
3252 Uint32 current_time = SDL_GetTicks(); | |
3253 Uint32 counter = 0; | |
3254 | |
3255 if(channel >= Number_of_Channels_global) | |
3256 { | |
3257 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3258 return -1; | |
3259 } | |
3260 | |
3261 if(channel >= 0) | |
3262 { | |
3263 if(volume < ALmixer_Channel_List[channel].min_volume) | |
3264 { | |
3265 volume = ALmixer_Channel_List[channel].min_volume; | |
3266 } | |
3267 else if(volume > ALmixer_Channel_List[channel].max_volume) | |
3268 { | |
3269 volume = ALmixer_Channel_List[channel].max_volume; | |
3270 } | |
3271 | |
3272 if(ALmixer_Channel_List[channel].channel_in_use) | |
3273 { | |
3274 if(ticks > 0) | |
3275 { | |
3276 /* Get the current volume */ | |
3277 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
3278 AL_MAX_GAIN, &value); | |
3279 if((error = alGetError()) != AL_NO_ERROR) | |
3280 { | |
3281 fprintf(stderr, "44Testing error: %s\n", | |
3282 aluGetErrorString(error)); | |
3283 } | |
3284 ALmixer_Channel_List[channel].fade_start_volume = value; | |
3285 | |
3286 /* Set the target volume */ | |
3287 ALmixer_Channel_List[channel].fade_end_volume = volume; | |
3288 | |
3289 /* Set fade start time */ | |
3290 ALmixer_Channel_List[channel].fade_start_time = current_time; | |
3291 /* Set the fade expire ticks */ | |
3292 ALmixer_Channel_List[channel].fade_expire_ticks = ticks; | |
3293 /* Enable fading effects via the flag */ | |
3294 ALmixer_Channel_List[channel].fade_enabled = 1; | |
3295 | |
3296 /* Set 1/(endtime-starttime) or 1/deltaT */ | |
3297 ALmixer_Channel_List[channel].fade_inv_time = 1.0f / ticks; | |
3298 } | |
3299 else | |
3300 { | |
3301 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3302 AL_MAX_GAIN, volume); | |
3303 if((error = alGetError()) != AL_NO_ERROR) | |
3304 { | |
3305 fprintf(stderr, "45Testing error: %s\n", | |
3306 aluGetErrorString(error)); | |
3307 } | |
3308 } | |
3309 counter++; | |
3310 } | |
3311 } | |
3312 /* Else need to fade out all channels */ | |
3313 else | |
3314 { | |
3315 Sint32 i; | |
3316 for(i=0; i<Number_of_Channels_global; i++) | |
3317 { | |
3318 if(volume < ALmixer_Channel_List[i].min_volume) | |
3319 { | |
3320 volume = ALmixer_Channel_List[i].min_volume; | |
3321 } | |
3322 else if(volume > ALmixer_Channel_List[i].max_volume) | |
3323 { | |
3324 volume = ALmixer_Channel_List[i].max_volume; | |
3325 } | |
3326 | |
3327 if(ALmixer_Channel_List[i].channel_in_use) | |
3328 { | |
3329 if(ticks > 0) | |
3330 { | |
3331 /* Get the current volume */ | |
3332 alGetSourcef(ALmixer_Channel_List[i].alsource, | |
3333 AL_MAX_GAIN, &value); | |
3334 if((error = alGetError()) != AL_NO_ERROR) | |
3335 { | |
3336 fprintf(stderr, "46Testing error: %s\n", | |
3337 aluGetErrorString(error)); | |
3338 } | |
3339 ALmixer_Channel_List[i].fade_start_volume = value; | |
3340 | |
3341 /* Set target volume */ | |
3342 ALmixer_Channel_List[i].fade_end_volume = volume; | |
3343 | |
3344 /* Set fade start time */ | |
3345 ALmixer_Channel_List[i].fade_start_time = current_time; | |
3346 /* Set the fade expire ticks */ | |
3347 ALmixer_Channel_List[i].fade_expire_ticks = ticks; | |
3348 /* Enable fading effects via the flag */ | |
3349 ALmixer_Channel_List[i].fade_enabled = 1; | |
3350 | |
3351 /* Set 1/(endtime-starttime) or 1/deltaT */ | |
3352 ALmixer_Channel_List[i].fade_inv_time = 1.0f / ticks; | |
3353 } | |
3354 else | |
3355 { | |
3356 alSourcef(ALmixer_Channel_List[i].alsource, | |
3357 AL_MAX_GAIN, volume); | |
3358 if((error = alGetError()) != AL_NO_ERROR) | |
3359 { | |
3360 fprintf(stderr, "47Testing error: %s\n", | |
3361 aluGetErrorString(error)); | |
3362 } | |
3363 } | |
3364 counter++; | |
3365 } | |
3366 } /* End for loop */ | |
3367 } | |
3368 return counter; | |
3369 } | |
3370 | |
3371 static Sint32 Internal_FadeSource(ALuint source, Uint32 ticks, ALfloat volume) | |
3372 { | |
3373 Sint32 channel; | |
3374 if(0 == source) | |
3375 { | |
3376 return Internal_FadeChannel(-1, ticks, volume); | |
3377 } | |
3378 | |
3379 channel = Internal_GetChannel(source); | |
3380 if(-1 == channel) | |
3381 { | |
3382 ALmixer_SetError("Cannot Fade source: %s", ALmixer_GetError()); | |
3383 return -1; | |
3384 } | |
3385 return Internal_FadeChannel(channel, ticks, volume); | |
3386 } | |
3387 | |
3388 | |
3389 | |
3390 | |
3391 /* Set a volume regardless if it's in use or not. | |
3392 */ | |
3393 static Sint32 Internal_SetMaxVolumeChannel(Sint32 channel, ALfloat volume) | |
3394 { | |
3395 ALenum error; | |
3396 Sint32 retval = 0; | |
3397 | |
3398 if(channel >= Number_of_Channels_global) | |
3399 { | |
3400 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3401 return -1; | |
3402 } | |
3403 | |
3404 if(channel >= 0) | |
3405 { | |
3406 if(volume < 0.0f) | |
3407 { | |
3408 volume = 0.0f; | |
3409 } | |
3410 else if(volume > 1.0f) | |
3411 { | |
3412 volume = 1.0f; | |
3413 } | |
3414 ALmixer_Channel_List[channel].max_volume = volume; | |
3415 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3416 AL_MAX_GAIN, volume); | |
3417 if((error = alGetError()) != AL_NO_ERROR) | |
3418 { | |
3419 ALmixer_SetError("%s", | |
3420 aluGetErrorString(error) ); | |
3421 retval = -1; | |
3422 } | |
3423 if(ALmixer_Channel_List[channel].max_volume < ALmixer_Channel_List[channel].min_volume) | |
3424 { | |
3425 ALmixer_Channel_List[channel].min_volume = volume; | |
3426 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3427 AL_MIN_GAIN, volume); | |
3428 if((error = alGetError()) != AL_NO_ERROR) | |
3429 { | |
3430 ALmixer_SetError("%s", | |
3431 aluGetErrorString(error) ); | |
3432 retval = -1; | |
3433 } | |
3434 } | |
3435 } | |
3436 else | |
3437 { | |
3438 Sint32 i; | |
3439 for(i=0; i<Number_of_Channels_global; i++) | |
3440 { | |
3441 if(volume < 0.0f) | |
3442 { | |
3443 volume = 0.0f; | |
3444 } | |
3445 else if(volume > 1.0f) | |
3446 { | |
3447 volume = 1.0f; | |
3448 } | |
3449 ALmixer_Channel_List[i].max_volume = volume; | |
3450 alSourcef(ALmixer_Channel_List[i].alsource, | |
3451 AL_MAX_GAIN, volume); | |
3452 if((error = alGetError()) != AL_NO_ERROR) | |
3453 { | |
3454 ALmixer_SetError("%s", | |
3455 aluGetErrorString(error) ); | |
3456 retval = -1; | |
3457 } | |
3458 if(ALmixer_Channel_List[i].max_volume < ALmixer_Channel_List[i].min_volume) | |
3459 { | |
3460 ALmixer_Channel_List[i].min_volume = volume; | |
3461 alSourcef(ALmixer_Channel_List[i].alsource, | |
3462 AL_MIN_GAIN, volume); | |
3463 if((error = alGetError()) != AL_NO_ERROR) | |
3464 { | |
3465 ALmixer_SetError("%s", | |
3466 aluGetErrorString(error) ); | |
3467 retval = -1; | |
3468 } | |
3469 } | |
3470 } | |
3471 } | |
3472 return retval; | |
3473 } | |
3474 | |
3475 static Sint32 Internal_SetMaxVolumeSource(ALuint source, ALfloat volume) | |
3476 { | |
3477 Sint32 channel; | |
3478 if(0 == source) | |
3479 { | |
3480 return Internal_SetMaxVolumeChannel(-1, volume); | |
3481 } | |
3482 | |
3483 channel = Internal_GetChannel(source); | |
3484 if(-1 == channel) | |
3485 { | |
3486 ALmixer_SetError("Cannot SetMaxVolume: %s", ALmixer_GetError()); | |
3487 return -1; | |
3488 } | |
3489 return Internal_SetMaxVolumeChannel(channel, volume); | |
3490 } | |
3491 | |
3492 static ALfloat Internal_GetMaxVolumeChannel(Sint32 channel) | |
3493 { | |
3494 /* | |
3495 ALfloat value; | |
3496 ALenum error; | |
3497 */ | |
3498 ALfloat running_total = 0.0f; | |
3499 ALfloat retval = 0.0f; | |
3500 | |
3501 if(channel >= Number_of_Channels_global) | |
3502 { | |
3503 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3504 return -1.0f; | |
3505 } | |
3506 | |
3507 if(channel >= 0) | |
3508 { | |
3509 /* | |
3510 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
3511 AL_GAIN, &value); | |
3512 if((error = alGetError()) != AL_NO_ERROR) | |
3513 { | |
3514 ALmixer_SetError("%s", | |
3515 aluGetErrorString(error) ); | |
3516 retval = -1.0f; | |
3517 } | |
3518 else | |
3519 { | |
3520 retval = value; | |
3521 } | |
3522 */ | |
3523 retval = ALmixer_Channel_List[channel].max_volume; | |
3524 | |
3525 } | |
3526 else | |
3527 { | |
3528 Sint32 i; | |
3529 for(i=0; i<Number_of_Channels_global; i++) | |
3530 { | |
3531 /* | |
3532 alGetSourcef(ALmixer_Channel_List[i].alsource, | |
3533 AL_GAIN, &value); | |
3534 if((error = alGetError()) != AL_NO_ERROR) | |
3535 { | |
3536 ALmixer_SetError("%s", | |
3537 aluGetErrorString(error) ); | |
3538 retval = -1; | |
3539 } | |
3540 else | |
3541 { | |
3542 running_total += value; | |
3543 } | |
3544 */ | |
3545 running_total += ALmixer_Channel_List[i].max_volume; | |
3546 } | |
3547 if(0 == Number_of_Channels_global) | |
3548 { | |
3549 ALmixer_SetError("No channels are allocated"); | |
3550 retval = -1.0f; | |
3551 } | |
3552 else | |
3553 { | |
3554 retval = running_total / Number_of_Channels_global; | |
3555 } | |
3556 } | |
3557 return retval; | |
3558 } | |
3559 | |
3560 static ALfloat Internal_GetMaxVolumeSource(ALuint source) | |
3561 { | |
3562 Sint32 channel; | |
3563 if(0 == source) | |
3564 { | |
3565 return Internal_GetMaxVolumeChannel(-1); | |
3566 } | |
3567 | |
3568 channel = Internal_GetChannel(source); | |
3569 if(-1 == channel) | |
3570 { | |
3571 ALmixer_SetError("Cannot GetVolume: %s", ALmixer_GetError()); | |
3572 return -1.0f; | |
3573 } | |
3574 | |
3575 return Internal_GetMaxVolumeChannel(channel); | |
3576 } | |
3577 | |
3578 | |
3579 /* Set a volume regardless if it's in use or not. | |
3580 */ | |
3581 static Sint32 Internal_SetMinVolumeChannel(Sint32 channel, ALfloat volume) | |
3582 { | |
3583 ALenum error; | |
3584 Sint32 retval = 0; | |
3585 | |
3586 if(channel >= Number_of_Channels_global) | |
3587 { | |
3588 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3589 return -1; | |
3590 } | |
3591 | |
3592 if(channel >= 0) | |
3593 { | |
3594 if(volume < 0.0f) | |
3595 { | |
3596 volume = 0.0f; | |
3597 } | |
3598 else if(volume > 1.0f) | |
3599 { | |
3600 volume = 1.0f; | |
3601 } | |
3602 ALmixer_Channel_List[channel].min_volume = volume; | |
3603 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3604 AL_MIN_GAIN, volume); | |
3605 if((error = alGetError()) != AL_NO_ERROR) | |
3606 { | |
3607 ALmixer_SetError("%s", | |
3608 aluGetErrorString(error) ); | |
3609 retval = -1; | |
3610 } | |
3611 if(ALmixer_Channel_List[channel].max_volume < ALmixer_Channel_List[channel].min_volume) | |
3612 { | |
3613 ALmixer_Channel_List[channel].max_volume = volume; | |
3614 alSourcef(ALmixer_Channel_List[channel].alsource, | |
3615 AL_MAX_GAIN, volume); | |
3616 if((error = alGetError()) != AL_NO_ERROR) | |
3617 { | |
3618 ALmixer_SetError("%s", | |
3619 aluGetErrorString(error) ); | |
3620 retval = -1; | |
3621 } | |
3622 } | |
3623 } | |
3624 else | |
3625 { | |
3626 Sint32 i; | |
3627 for(i=0; i<Number_of_Channels_global; i++) | |
3628 { | |
3629 if(volume < 0.0f) | |
3630 { | |
3631 volume = 0.0f; | |
3632 } | |
3633 else if(volume > 1.0f) | |
3634 { | |
3635 volume = 1.0f; | |
3636 } | |
3637 ALmixer_Channel_List[i].min_volume = volume; | |
3638 alSourcef(ALmixer_Channel_List[i].alsource, | |
3639 AL_MIN_GAIN, volume); | |
3640 if((error = alGetError()) != AL_NO_ERROR) | |
3641 { | |
3642 ALmixer_SetError("%s", | |
3643 aluGetErrorString(error) ); | |
3644 retval = -1; | |
3645 } | |
3646 if(ALmixer_Channel_List[i].max_volume < ALmixer_Channel_List[i].min_volume) | |
3647 { | |
3648 ALmixer_Channel_List[i].max_volume = volume; | |
3649 alSourcef(ALmixer_Channel_List[i].alsource, | |
3650 AL_MAX_GAIN, volume); | |
3651 if((error = alGetError()) != AL_NO_ERROR) | |
3652 { | |
3653 ALmixer_SetError("%s", | |
3654 aluGetErrorString(error) ); | |
3655 retval = -1; | |
3656 } | |
3657 } | |
3658 } | |
3659 } | |
3660 return retval; | |
3661 } | |
3662 | |
3663 static Sint32 Internal_SetMinVolumeSource(ALuint source, ALfloat volume) | |
3664 { | |
3665 Sint32 channel; | |
3666 if(0 == source) | |
3667 { | |
3668 return Internal_SetMinVolumeChannel(-1, volume); | |
3669 } | |
3670 | |
3671 channel = Internal_GetChannel(source); | |
3672 if(-1 == channel) | |
3673 { | |
3674 ALmixer_SetError("Cannot SetMaxVolume: %s", ALmixer_GetError()); | |
3675 return -1; | |
3676 } | |
3677 return Internal_SetMinVolumeChannel(channel, volume); | |
3678 } | |
3679 | |
3680 static ALfloat Internal_GetMinVolumeChannel(Sint32 channel) | |
3681 { | |
3682 /* | |
3683 ALfloat value; | |
3684 ALenum error; | |
3685 */ | |
3686 ALfloat running_total = 0.0f; | |
3687 ALfloat retval = 0.0f; | |
3688 | |
3689 if(channel >= Number_of_Channels_global) | |
3690 { | |
3691 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3692 return -1.0f; | |
3693 } | |
3694 | |
3695 if(channel >= 0) | |
3696 { | |
3697 /* | |
3698 alGetSourcef(ALmixer_Channel_List[channel].alsource, | |
3699 AL_GAIN, &value); | |
3700 if((error = alGetError()) != AL_NO_ERROR) | |
3701 { | |
3702 ALmixer_SetError("%s", | |
3703 aluGetErrorString(error) ); | |
3704 retval = -1.0f; | |
3705 } | |
3706 else | |
3707 { | |
3708 retval = value; | |
3709 } | |
3710 */ | |
3711 retval = ALmixer_Channel_List[channel].min_volume; | |
3712 | |
3713 } | |
3714 else | |
3715 { | |
3716 Sint32 i; | |
3717 for(i=0; i<Number_of_Channels_global; i++) | |
3718 { | |
3719 /* | |
3720 alGetSourcef(ALmixer_Channel_List[i].alsource, | |
3721 AL_GAIN, &value); | |
3722 if((error = alGetError()) != AL_NO_ERROR) | |
3723 { | |
3724 ALmixer_SetError("%s", | |
3725 aluGetErrorString(error) ); | |
3726 retval = -1; | |
3727 } | |
3728 else | |
3729 { | |
3730 running_total += value; | |
3731 } | |
3732 */ | |
3733 running_total += ALmixer_Channel_List[i].min_volume; | |
3734 } | |
3735 if(0 == Number_of_Channels_global) | |
3736 { | |
3737 ALmixer_SetError("No channels are allocated"); | |
3738 retval = -1.0f; | |
3739 } | |
3740 else | |
3741 { | |
3742 retval = running_total / Number_of_Channels_global; | |
3743 } | |
3744 } | |
3745 return retval; | |
3746 } | |
3747 | |
3748 static ALfloat Internal_GetMinVolumeSource(ALuint source) | |
3749 { | |
3750 Sint32 channel; | |
3751 if(0 == source) | |
3752 { | |
3753 return Internal_GetMinVolumeChannel(-1); | |
3754 } | |
3755 | |
3756 channel = Internal_GetChannel(source); | |
3757 if(-1 == channel) | |
3758 { | |
3759 ALmixer_SetError("Cannot GetVolume: %s", ALmixer_GetError()); | |
3760 return -1.0f; | |
3761 } | |
3762 | |
3763 return Internal_GetMinVolumeChannel(channel); | |
3764 } | |
3765 | |
3766 | |
3767 /* Changes the listener volume */ | |
3768 static Sint32 Internal_SetMasterVolume(ALfloat volume) | |
3769 { | |
3770 ALenum error; | |
3771 alListenerf(AL_GAIN, volume); | |
3772 if((error = alGetError()) != AL_NO_ERROR) | |
3773 { | |
3774 ALmixer_SetError("%s", | |
3775 aluGetErrorString(error) ); | |
3776 return -1; | |
3777 } | |
3778 return 0; | |
3779 } | |
3780 | |
3781 static ALfloat Internal_GetMasterVolume() | |
3782 { | |
3783 ALenum error; | |
3784 ALfloat volume; | |
3785 alGetListenerf(AL_GAIN, &volume); | |
3786 if((error = alGetError()) != AL_NO_ERROR) | |
3787 { | |
3788 ALmixer_SetError("%s", | |
3789 aluGetErrorString(error) ); | |
3790 return -1.0f; | |
3791 } | |
3792 return volume; | |
3793 } | |
3794 | |
3795 | |
3796 | |
3797 | |
3798 /* Will fade out currently playing channels. | |
3799 * It starts at the current volume level and goes down */ | |
3800 static Sint32 Internal_ExpireChannel(Sint32 channel, Sint32 ticks) | |
3801 { | |
3802 Uint32 current_time = SDL_GetTicks(); | |
3803 Uint32 counter = 0; | |
3804 | |
3805 /* We can't accept 0 as a value because of div-by-zero. | |
3806 * If zero, just call Halt at normal | |
3807 * volume | |
3808 */ | |
3809 if(0 == ticks) | |
3810 { | |
3811 return Internal_HaltChannel(channel); | |
3812 } | |
3813 if(ticks < -1) | |
3814 { | |
3815 ticks = -1; | |
3816 } | |
3817 | |
3818 | |
3819 if(channel >= Number_of_Channels_global) | |
3820 { | |
3821 ALmixer_SetError("Requested channel (%d) exceeds maximum channel (%d) because only %d channels are allocated", channel, Number_of_Channels_global-1, Number_of_Channels_global); | |
3822 return -1; | |
3823 } | |
3824 | |
3825 if(channel >= 0) | |
3826 { | |
3827 if(ALmixer_Channel_List[channel].channel_in_use) | |
3828 { | |
3829 /* Set expire start time */ | |
3830 ALmixer_Channel_List[channel].start_time = current_time; | |
3831 /* Set the expire ticks */ | |
3832 ALmixer_Channel_List[channel].expire_ticks = ticks; | |
3833 | |
3834 counter++; | |
3835 } | |
3836 } | |
3837 /* Else need to fade out all channels */ | |
3838 else | |
3839 { | |
3840 Sint32 i; | |
3841 for(i=0; i<Number_of_Channels_global; i++) | |
3842 { | |
3843 if(ALmixer_Channel_List[i].channel_in_use) | |
3844 { | |
3845 /* Set expire start time */ | |
3846 ALmixer_Channel_List[i].start_time = current_time; | |
3847 /* Set the expire ticks */ | |
3848 ALmixer_Channel_List[i].expire_ticks = ticks; | |
3849 | |
3850 counter++; | |
3851 } | |
3852 } /* End for loop */ | |
3853 } | |
3854 return counter; | |
3855 } | |
3856 | |
3857 | |
3858 static Sint32 Internal_ExpireSource(ALuint source, Sint32 ticks) | |
3859 { | |
3860 Sint32 channel; | |
3861 if(0 == source) | |
3862 { | |
3863 return Internal_ExpireChannel(-1, ticks); | |
3864 } | |
3865 | |
3866 channel = Internal_GetChannel(source); | |
3867 if(-1 == channel) | |
3868 { | |
3869 ALmixer_SetError("Cannot Expire source: %s", ALmixer_GetError()); | |
3870 return -1; | |
3871 } | |
3872 return Internal_ExpireChannel(channel, ticks); | |
3873 } | |
3874 | |
3875 | |
3876 static Sint32 Internal_QueryChannel(Sint32 channel) | |
3877 { | |
3878 Sint32 i; | |
3879 Sint32 counter = 0; | |
3880 if(channel >= Number_of_Channels_global) | |
3881 { | |
3882 ALmixer_SetError("Invalid channel: %d", channel); | |
3883 return -1; | |
3884 } | |
3885 | |
3886 if(channel >= 0) | |
3887 { | |
3888 return ALmixer_Channel_List[channel].channel_in_use; | |
3889 } | |
3890 | |
3891 /* Else, return the number of channels in use */ | |
3892 for(i=0; i<Number_of_Channels_global; i++) | |
3893 { | |
3894 if(ALmixer_Channel_List[i].channel_in_use) | |
3895 { | |
3896 counter++; | |
3897 } | |
3898 } | |
3899 return counter; | |
3900 } | |
3901 | |
3902 | |
3903 static Sint32 Internal_QuerySource(ALuint source) | |
3904 { | |
3905 Sint32 channel; | |
3906 if(0 == source) | |
3907 { | |
3908 return Internal_QueryChannel(-1); | |
3909 } | |
3910 | |
3911 channel = Internal_GetChannel(source); | |
3912 if(-1 == channel) | |
3913 { | |
3914 ALmixer_SetError("Cannot query source: %s", ALmixer_GetError()); | |
3915 return -1; | |
3916 } | |
3917 | |
3918 return Internal_QueryChannel(channel); | |
3919 } | |
3920 | |
3921 | |
3922 static Sint32 Internal_CountUnreservedUsedChannels() | |
3923 { | |
3924 Sint32 i; | |
3925 Sint32 counter = 0; | |
3926 | |
3927 | |
3928 /* Else, return the number of channels in use */ | |
3929 for(i=Number_of_Reserve_Channels_global; i<Number_of_Channels_global; i++) | |
3930 { | |
3931 if(ALmixer_Channel_List[i].channel_in_use) | |
3932 { | |
3933 counter++; | |
3934 } | |
3935 } | |
3936 return counter; | |
3937 } | |
3938 | |
3939 static Sint32 Internal_CountUnreservedFreeChannels() | |
3940 { | |
3941 Sint32 i; | |
3942 Sint32 counter = 0; | |
3943 | |
3944 | |
3945 /* Else, return the number of channels in use */ | |
3946 for(i=Number_of_Reserve_Channels_global; i<Number_of_Channels_global; i++) | |
3947 { | |
3948 if( ! ALmixer_Channel_List[i].channel_in_use) | |
3949 { | |
3950 counter++; | |
3951 } | |
3952 } | |
3953 return counter; | |
3954 } | |
3955 | |
3956 static Sint32 Internal_CountAllUsedChannels() | |
3957 { | |
3958 Sint32 i; | |
3959 Sint32 counter = 0; | |
3960 | |
3961 | |
3962 /* Else, return the number of channels in use */ | |
3963 for(i=0; i<Number_of_Channels_global; i++) | |
3964 { | |
3965 if(ALmixer_Channel_List[i].channel_in_use) | |
3966 { | |
3967 counter++; | |
3968 } | |
3969 } | |
3970 return counter; | |
3971 } | |
3972 | |
3973 static Sint32 Internal_CountAllFreeChannels() | |
3974 { | |
3975 Sint32 i; | |
3976 Sint32 counter = 0; | |
3977 | |
3978 | |
3979 /* Else, return the number of channels in use */ | |
3980 for(i=0; i<Number_of_Channels_global; i++) | |
3981 { | |
3982 if( ! ALmixer_Channel_List[i].channel_in_use) | |
3983 { | |
3984 counter++; | |
3985 } | |
3986 } | |
3987 return counter; | |
3988 } | |
3989 | |
3990 | |
3991 static Sint32 Internal_PlayingChannel(Sint32 channel) | |
3992 { | |
3993 Sint32 i; | |
3994 Sint32 counter = 0; | |
3995 ALint state; | |
3996 | |
3997 if(channel >= Number_of_Channels_global) | |
3998 { | |
3999 ALmixer_SetError("Invalid channel: %d", channel); | |
4000 return -1; | |
4001 } | |
4002 | |
4003 if(channel >= 0) | |
4004 { | |
4005 if(ALmixer_Channel_List[channel].channel_in_use) | |
4006 { | |
4007 alGetSourcei( | |
4008 ALmixer_Channel_List[channel].alsource, | |
4009 AL_SOURCE_STATE, &state | |
4010 ); | |
4011 if(AL_PLAYING == state) | |
4012 { | |
4013 return 1; | |
4014 } | |
4015 } | |
4016 return 0; | |
4017 } | |
4018 | |
4019 /* Else, return the number of channels in use */ | |
4020 for(i=0; i<Number_of_Channels_global; i++) | |
4021 { | |
4022 if(ALmixer_Channel_List[i].channel_in_use) | |
4023 { | |
4024 alGetSourcei( | |
4025 ALmixer_Channel_List[i].alsource, | |
4026 AL_SOURCE_STATE, &state | |
4027 ); | |
4028 if(AL_PLAYING == state) | |
4029 { | |
4030 counter++; | |
4031 } | |
4032 } | |
4033 } | |
4034 return counter; | |
4035 } | |
4036 | |
4037 | |
4038 static Sint32 Internal_PlayingSource(ALuint source) | |
4039 { | |
4040 Sint32 channel; | |
4041 if(0 == source) | |
4042 { | |
4043 return Internal_PlayingChannel(-1); | |
4044 } | |
4045 | |
4046 channel = Internal_GetChannel(source); | |
4047 if(-1 == channel) | |
4048 { | |
4049 ALmixer_SetError("Cannot query source: %s", ALmixer_GetError()); | |
4050 return -1; | |
4051 } | |
4052 | |
4053 return Internal_PlayingChannel(channel); | |
4054 } | |
4055 | |
4056 | |
4057 static Sint32 Internal_PausedChannel(Sint32 channel) | |
4058 { | |
4059 Sint32 i; | |
4060 Sint32 counter = 0; | |
4061 ALint state; | |
4062 | |
4063 if(channel >= Number_of_Channels_global) | |
4064 { | |
4065 ALmixer_SetError("Invalid channel: %d", channel); | |
4066 return -1; | |
4067 } | |
4068 | |
4069 if(channel >= 0) | |
4070 { | |
4071 if(ALmixer_Channel_List[channel].channel_in_use) | |
4072 { | |
4073 alGetSourcei( | |
4074 ALmixer_Channel_List[channel].alsource, | |
4075 AL_SOURCE_STATE, &state | |
4076 ); | |
4077 if(AL_PAUSED == state) | |
4078 { | |
4079 return 1; | |
4080 } | |
4081 } | |
4082 return 0; | |
4083 } | |
4084 | |
4085 /* Else, return the number of channels in use */ | |
4086 for(i=0; i<Number_of_Channels_global; i++) | |
4087 { | |
4088 if(ALmixer_Channel_List[i].channel_in_use) | |
4089 { | |
4090 alGetSourcei( | |
4091 ALmixer_Channel_List[i].alsource, | |
4092 AL_SOURCE_STATE, &state | |
4093 ); | |
4094 if(AL_PAUSED == state) | |
4095 { | |
4096 counter++; | |
4097 } | |
4098 } | |
4099 } | |
4100 return counter; | |
4101 } | |
4102 | |
4103 | |
4104 static Sint32 Internal_PausedSource(ALuint source) | |
4105 { | |
4106 Sint32 channel; | |
4107 if(0 == source) | |
4108 { | |
4109 return Internal_PausedChannel(-1); | |
4110 } | |
4111 | |
4112 channel = Internal_GetChannel(source); | |
4113 if(-1 == channel) | |
4114 { | |
4115 ALmixer_SetError("Cannot query source: %s", ALmixer_GetError()); | |
4116 return -1; | |
4117 } | |
4118 | |
4119 return Internal_PausedChannel(channel); | |
4120 } | |
4121 | |
4122 | |
4123 | |
4124 | |
4125 | |
4126 | |
4127 /* Private function for Updating ALmixer. | |
4128 * This is a very big and ugly function. | |
4129 * It should return the number of buffers that were | |
4130 * queued during the call. The value might be | |
4131 * used to guage how long you might wait to | |
4132 * call the next update loop in case you are worried | |
4133 * about preserving CPU cycles. The idea is that | |
4134 * when a buffer is queued, there was probably some | |
4135 * CPU intensive looping which took awhile. | |
4136 * It's mainly provided as a convenience. | |
4137 * Timing the call with SDL_GetTicks() would produce | |
4138 * more accurate information. | |
4139 * Returns a negative value if there was an error, | |
4140 * the value being the number of errors. | |
4141 */ | |
4142 static Sint32 Update_ALmixer(void* data) | |
4143 { | |
4144 Sint32 retval = 0; | |
4145 Sint32 error_flag = 0; | |
4146 ALenum error; | |
4147 ALint state; | |
4148 Sint32 i=0; | |
4149 | |
4150 SDL_LockMutex(simple_lock); | |
4151 if(0 == ALmixer_Initialized) | |
4152 { | |
4153 SDL_UnlockMutex(simple_lock); | |
4154 return 0; | |
4155 } | |
4156 | |
4157 /* Check the quick flag to see if anything needs updating */ | |
4158 /* If anything is playing, then we have to do work */ | |
4159 if( 0 == Is_Playing_global) | |
4160 { | |
4161 SDL_UnlockMutex(simple_lock); | |
4162 return 0; | |
4163 } | |
4164 /* Clear error */ | |
4165 if((error = alGetError()) != AL_NO_ERROR) | |
4166 { | |
4167 fprintf(stderr, "08Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4168 aluGetErrorString(error)); | |
4169 } | |
4170 alGetError(); | |
4171 | |
4172 for(i=0; i<Number_of_Channels_global; i++) | |
4173 { | |
4174 if( ALmixer_Channel_List[i].channel_in_use ) | |
4175 { | |
4176 | |
4177 /* For simplicity, before we do anything else, | |
4178 * we can check the timeout and fading values | |
4179 * and do the appropriate things | |
4180 */ | |
4181 Uint32 current_time = SDL_GetTicks(); | |
4182 | |
4183 /* Check to see if we need to halt due to Timed play */ | |
4184 if(ALmixer_Channel_List[i].expire_ticks != -1) | |
4185 { | |
4186 Uint32 target_time = (Uint32)ALmixer_Channel_List[i].expire_ticks | |
4187 + ALmixer_Channel_List[i].start_time; | |
4188 alGetSourcei(ALmixer_Channel_List[i].alsource, | |
4189 AL_SOURCE_STATE, &state); | |
4190 if((error = alGetError()) != AL_NO_ERROR) | |
4191 { | |
4192 fprintf(stderr, "06Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4193 aluGetErrorString(error)); | |
4194 } | |
4195 | |
4196 /* Check the time, and also make sure that it is not | |
4197 * paused (if paused, we don't want to make the | |
4198 * evaluation because when resumed, we will adjust | |
4199 * the times to compensate for the pause). | |
4200 */ | |
4201 if( (current_time >= target_time) | |
4202 && (state != AL_PAUSED) ) | |
4203 { | |
4204 /* Stop the playback */ | |
4205 ALmixer_HaltChannel(i); | |
4206 if((error = alGetError()) != AL_NO_ERROR) | |
4207 { | |
4208 fprintf(stderr, "07Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4209 aluGetErrorString(error)); | |
4210 } | |
4211 | |
4212 /* Everything should be done so go on to the next loop */ | |
4213 continue; | |
4214 } | |
4215 } /* End if time expired check */ | |
4216 | |
4217 /* Check to see if we need to adjust the volume for fading */ | |
4218 if( ALmixer_Channel_List[i].fade_enabled ) | |
4219 { | |
4220 Uint32 target_time = ALmixer_Channel_List[i].fade_expire_ticks | |
4221 + ALmixer_Channel_List[i].fade_start_time; | |
4222 alGetSourcei(ALmixer_Channel_List[i].alsource, | |
4223 AL_SOURCE_STATE, &state); | |
4224 if((error = alGetError()) != AL_NO_ERROR) | |
4225 { | |
4226 fprintf(stderr, "05Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4227 aluGetErrorString(error)); | |
4228 } | |
4229 | |
4230 /* Check the time, and also make sure that it is not | |
4231 * paused (if paused, we don't want to make the | |
4232 * evaluation because when resumed, we will adjust | |
4233 * the times to compensate for the pause). | |
4234 */ | |
4235 if(state != AL_PAUSED) | |
4236 { | |
4237 ALfloat t; | |
4238 Uint32 delta_time; | |
4239 ALfloat current_volume; | |
4240 if(current_time >= target_time) | |
4241 { | |
4242 /* Need to constrain value to the end time | |
4243 * (can't go pass the value for calculations) | |
4244 */ | |
4245 current_time = target_time; | |
4246 /* We can disable the fade flag now */ | |
4247 ALmixer_Channel_List[i].fade_enabled = 0; | |
4248 } | |
4249 /* Use the linear interpolation formula: | |
4250 * X = (1-t)x0 + tx1 | |
4251 * where x0 would be the start value | |
4252 * and x1 is the final value | |
4253 * and t is delta_time*inv_time (adjusts 0 <= time <= 1) | |
4254 * delta_time = current_time-start_time | |
4255 * inv_time = 1/ (end_time-start_time) | |
4256 * so t = current_time-start_time / (end_time-start_time) | |
4257 * | |
4258 */ | |
4259 delta_time = current_time - ALmixer_Channel_List[i].fade_start_time; | |
4260 t = (ALfloat) delta_time * ALmixer_Channel_List[i].fade_inv_time; | |
4261 | |
4262 current_volume = (1.0f-t) * ALmixer_Channel_List[i].fade_start_volume | |
4263 + t * ALmixer_Channel_List[i].fade_end_volume; | |
4264 | |
4265 /* Set the volume */ | |
4266 alSourcef(ALmixer_Channel_List[i].alsource, | |
4267 AL_MAX_GAIN, current_volume); | |
4268 if((error = alGetError()) != AL_NO_ERROR) | |
4269 { | |
4270 fprintf(stderr, "04Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4271 aluGetErrorString(error)); | |
4272 } | |
4273 | |
4274 /* | |
4275 fprintf(stderr, "Current time =%d\n", current_time); | |
4276 fprintf(stderr, "Current vol=%f on channel %d\n", current_volume, i); | |
4277 */ | |
4278 } /* End if not PAUSED */ | |
4279 } /* End if fade_enabled */ | |
4280 | |
4281 | |
4282 /* Okay, now that the time expired and fading stuff | |
4283 * is done, do the rest of the hard stuff | |
4284 */ | |
4285 | |
4286 | |
4287 /* For predecoded, check to see if done */ | |
4288 if( ALmixer_Channel_List[i].almixer_data->decoded_all ) | |
4289 { | |
4290 | |
4291 #if 0 | |
4292 /********* Remove this **********/ | |
4293 ALint buffers_processed; | |
4294 ALint buffers_still_queued; | |
4295 fprintf(stderr, "For Predecoded\n"); | |
4296 | |
4297 alGetSourcei( | |
4298 ALmixer_Channel_List[i].alsource, | |
4299 AL_SOURCE_STATE, &state | |
4300 ); | |
4301 switch(state) { | |
4302 case AL_PLAYING: | |
4303 fprintf(stderr, "Channel '%d' is PLAYING\n", i); | |
4304 break; | |
4305 case AL_PAUSED: | |
4306 fprintf(stderr, "Channel '%d' is PAUSED\n",i); | |
4307 break; | |
4308 case AL_STOPPED: | |
4309 fprintf(stderr, "Channel '%d' is STOPPED\n",i); | |
4310 break; | |
4311 case AL_INITIAL: | |
4312 fprintf(stderr, "Channel '%d' is INITIAL\n",i); | |
4313 break; | |
4314 default: | |
4315 fprintf(stderr, "Channel '%d' is UNKNOWN\n",i); | |
4316 break; | |
4317 } | |
4318 | |
4319 alGetSourcei( | |
4320 ALmixer_Channel_List[i].alsource, | |
4321 AL_BUFFERS_PROCESSED, &buffers_processed | |
4322 ); | |
4323 fprintf(stderr, "Buffers processed = %d\n", buffers_processed); | |
4324 | |
4325 alGetSourcei( | |
4326 ALmixer_Channel_List[i].alsource, | |
4327 AL_BUFFERS_QUEUED, &buffers_still_queued | |
4328 ); | |
4329 | |
4330 /******** END REMOVE *******/ | |
4331 #endif | |
4332 /* FIXME: Ugh! Somewhere an alError is being thrown ("Invalid Enum Value"), but I can't | |
4333 * find it. It only seems to be thrown for OS X. I placed error messages after every al* | |
4334 * command I could find in the above loops, but the error doesn't seem to show | |
4335 * up until around here. I mistook it for a get queued buffers | |
4336 * error in OS X. I don't think there's an error down there. | |
4337 * For now, I'm clearing the error here. | |
4338 */ | |
4339 | |
4340 if((error = alGetError()) != AL_NO_ERROR) | |
4341 { | |
4342 fprintf(stderr, "03Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4343 aluGetErrorString(error)); | |
4344 } | |
4345 | |
4346 | |
4347 alGetSourcei( | |
4348 ALmixer_Channel_List[i].alsource, | |
4349 AL_SOURCE_STATE, &state | |
4350 ); | |
4351 if((error = alGetError()) != AL_NO_ERROR) | |
4352 { | |
4353 fprintf(stderr, "02Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4354 aluGetErrorString(error)); | |
4355 } | |
4356 | |
4357 | |
4358 if(AL_STOPPED == state) | |
4359 { | |
4360 /* Playback has ended. | |
4361 * Loop if necessary, or launch callback | |
4362 * and clear channel (or clear channel and | |
4363 * then launch callback?) | |
4364 */ | |
4365 | |
4366 | |
4367 /* Need to check for loops */ | |
4368 if(ALmixer_Channel_List[i].loops != 0) | |
4369 { | |
4370 /* Corner Case: If the buffer has | |
4371 * been modified using Seek, | |
4372 * the loop will start at the seek | |
4373 * position. | |
4374 */ | |
4375 if(ALmixer_Channel_List[i].loops != -1) | |
4376 { | |
4377 ALmixer_Channel_List[i].loops--; | |
4378 } | |
4379 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
4380 if((error = alGetError()) != AL_NO_ERROR) | |
4381 { | |
4382 fprintf(stderr, "50Testing error: %s\n", | |
4383 aluGetErrorString(error)); | |
4384 } | |
4385 continue; | |
4386 } | |
4387 /* No loops. End play. */ | |
4388 else | |
4389 { | |
4390 /* Problem: It seems that when mixing | |
4391 * streamed and predecoded sources, | |
4392 * the previous instance lingers, | |
4393 * so we need to force remove | |
4394 * the data from the source. | |
4395 * The sharing problem | |
4396 * occurs when a previous predecoded buffer is played on | |
4397 * a source, and then a streamed source is played later | |
4398 * on that same source. OpenAL isn't consistently | |
4399 * removing the previous buffer so both get played. | |
4400 * (Different dists seem to have different quirks. | |
4401 * The problem might lead to crashes in the worst case.) | |
4402 */ | |
4403 /* Additional problem: There is another | |
4404 * inconsistency among OpenAL distributions. | |
4405 * Both Loki and Creative Windows seem to keep | |
4406 * the buffer queued which requires removing. | |
4407 * But the Creative Macintosh version does | |
4408 * not have any buffer queued after play | |
4409 * and it returns the error: Invalid Enum Value | |
4410 * if I try to unqueue it. | |
4411 * So I'm going to put in a check to see if I | |
4412 * can detect any buffers queued first | |
4413 * and then unqueue them if I can see them. | |
4414 * Additional note: The new CoreAudio based | |
4415 * implementation leaves it's buffer queued | |
4416 * like Loki and Creative Windows. But | |
4417 * considering all the problems I'm having | |
4418 * with the different distributions, this | |
4419 * check seems reasonable. | |
4420 */ | |
4421 ALint buffers_still_queued; | |
4422 if((error = alGetError()) != AL_NO_ERROR) | |
4423 { | |
4424 fprintf(stderr, "01Testing errpr before unqueue because getting stuff, for OS X this is expected: %s\n", | |
4425 aluGetErrorString(error)); | |
4426 } | |
4427 | |
4428 alGetSourcei( | |
4429 ALmixer_Channel_List[i].alsource, | |
4430 AL_BUFFERS_QUEUED, &buffers_still_queued | |
4431 ); | |
4432 if((error = alGetError()) != AL_NO_ERROR) | |
4433 { | |
4434 fprintf(stderr, "Error with unqueue, for OS X this is expected: %s\n", | |
4435 aluGetErrorString(error)); | |
4436 ALmixer_SetError("Failed detecting unqueued predecoded buffer (expected with OS X): %s", | |
4437 aluGetErrorString(error) ); | |
4438 error_flag--; | |
4439 } | |
4440 if(buffers_still_queued > 0) | |
4441 { | |
4442 /* | |
4443 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
4444 */ | |
4445 | |
4446 /* Rather than force unqueuing the buffer, let's see if | |
4447 * setting the buffer to none works (the OpenAL 1.0 | |
4448 * Reference Annotation suggests this should work). | |
4449 */ | |
4450 alSourcei(ALmixer_Channel_List[i].alsource, | |
4451 AL_BUFFER, AL_NONE); | |
4452 /* | |
4453 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
4454 */ | |
4455 if((error = alGetError()) != AL_NO_ERROR) | |
4456 { | |
4457 fprintf(stderr, "Error with unqueue, after alSourceUnqueueBuffers, buffers_still_queued=%d, error is: %s", buffers_still_queued, | |
4458 aluGetErrorString(error)); | |
4459 ALmixer_SetError("Predecoded Unqueue buffer failed: %s", | |
4460 aluGetErrorString(error) ); | |
4461 error_flag--; | |
4462 } | |
4463 | |
4464 } | |
4465 | |
4466 Clean_Channel(i); | |
4467 /* Subtract counter */ | |
4468 Is_Playing_global--; | |
4469 | |
4470 /* Launch callback */ | |
4471 Invoke_Channel_Done_Callback(i); | |
4472 | |
4473 /* We're done for this loop. | |
4474 * Go to next channel | |
4475 */ | |
4476 continue; | |
4477 } | |
4478 continue; | |
4479 } | |
4480 } /* End if decoded_all */ | |
4481 /* For streamed */ | |
4482 else | |
4483 { | |
4484 ALint buffers_processed; | |
4485 ALint buffers_still_queued; | |
4486 ALint current_buffer_id; | |
4487 | |
4488 ALuint unqueued_buffer_id; | |
4489 #if 0 | |
4490 /********* Remove this **********/ | |
4491 fprintf(stderr, "For Streamed\n"); | |
4492 | |
4493 alGetSourcei( | |
4494 ALmixer_Channel_List[i].alsource, | |
4495 AL_SOURCE_STATE, &state | |
4496 ); | |
4497 switch(state) { | |
4498 case AL_PLAYING: | |
4499 fprintf(stderr, "Channel '%d' is PLAYING\n", i); | |
4500 break; | |
4501 case AL_PAUSED: | |
4502 fprintf(stderr, "Channel '%d' is PAUSED\n",i); | |
4503 break; | |
4504 case AL_STOPPED: | |
4505 fprintf(stderr, "Channel '%d' is STOPPED\n",i); | |
4506 break; | |
4507 case AL_INITIAL: | |
4508 fprintf(stderr, "Channel '%d' is INITIAL\n",i); | |
4509 break; | |
4510 default: | |
4511 fprintf(stderr, "Channel '%d' is UNKNOWN\n",i); | |
4512 break; | |
4513 } | |
4514 /******** END REMOVE *******/ | |
4515 #endif | |
4516 /* Get the number of buffers still queued */ | |
4517 alGetSourcei( | |
4518 ALmixer_Channel_List[i].alsource, | |
4519 AL_BUFFERS_QUEUED, &buffers_still_queued | |
4520 ); | |
4521 if((error = alGetError()) != AL_NO_ERROR) | |
4522 { | |
4523 fprintf(stderr, "51Testing error: %s\n", | |
4524 aluGetErrorString(error)); | |
4525 } | |
4526 /* Get the number of buffers processed | |
4527 * so we know if we need to refill | |
4528 */ | |
4529 alGetSourcei( | |
4530 ALmixer_Channel_List[i].alsource, | |
4531 AL_BUFFERS_PROCESSED, &buffers_processed | |
4532 ); | |
4533 if((error = alGetError()) != AL_NO_ERROR) | |
4534 { | |
4535 fprintf(stderr, "52Testing error: %s\n", | |
4536 aluGetErrorString(error)); | |
4537 } | |
4538 | |
4539 /* WTF!!! The Nvidia distribution is failing on the alGetSourcei(source, AL_BUFFER, buf_id) call. | |
4540 * I need this call to figure out which buffer OpenAL is currently playing. | |
4541 * It keeps returning an "Invalid Enum" error. | |
4542 * This is totally inane! It's a basic query. | |
4543 * By the spec, this functionality is not explicitly defined so Nvidia refuses to | |
4544 * fix this behavior, even though all other distributions work fine with this. | |
4545 * The only workaround for this is for | |
4546 * a significant rewrite of my code which requires me to | |
4547 * duplicate the OpenAL queued buffers state with my own | |
4548 * code and try to derive what the current playing buffer is by indirect observation of | |
4549 * looking at buffers_processed. But of course this has a ton of downsides since my | |
4550 * queries do not give me perfect timing of what OpenAL is actually doing and | |
4551 * the fact that some of the distributions seem to have buffer queuing problems | |
4552 * with their query results (CoreAudio). This also means a ton of extra code | |
4553 * on my side. The lack of support of a 1 line call has required me to | |
4554 * implement yet another entire state machine. <sigh> | |
4555 */ | |
4556 #if 0 /* This code will not work until possibly OpenAL 1.1 because of Nvidia */ | |
4557 /* Get the id to the current buffer playing */ | |
4558 alGetSourcei( | |
4559 ALmixer_Channel_List[i].alsource, | |
4560 AL_BUFFER, ¤t_buffer_id | |
4561 ); | |
4562 if((error = alGetError()) != AL_NO_ERROR) | |
4563 { | |
4564 fprintf(stderr, "53Testing error: %s\n", | |
4565 aluGetErrorString(error)); | |
4566 } | |
4567 | |
4568 /* Before the hard stuff, check to see if the | |
4569 * current queued AL buffer has changed. | |
4570 * If it has, we should launch a data callback if | |
4571 * necessary | |
4572 */ | |
4573 if( ((ALuint)current_buffer_id) != | |
4574 ALmixer_Channel_List[i].almixer_data->current_buffer) | |
4575 { | |
4576 ALmixer_Channel_List[i].almixer_data->current_buffer | |
4577 = (ALuint)current_buffer_id; | |
4578 | |
4579 Invoke_Streamed_Channel_Data_Callback(i, ALmixer_Channel_List[i].almixer_data, current_buffer_id); | |
4580 } | |
4581 #else | |
4582 /* Only do this if "access_data" was requested (i.e. the circular_buffer!=NULL) | |
4583 * And if one of the two are true: | |
4584 * Either buffers_processed > 0 (because the current_buffer might have changed) | |
4585 * or if the current_buffer==0 (because we are in an initial state or recovering from | |
4586 * a buffer underrun) | |
4587 */ | |
4588 if((ALmixer_Channel_List[i].almixer_data->circular_buffer_queue != NULL) | |
4589 && ( | |
4590 (buffers_processed > 0) || (0 == ALmixer_Channel_List[i].almixer_data->current_buffer) | |
4591 ) | |
4592 ) | |
4593 { | |
4594 Uint32 k; | |
4595 Uint32 queue_ret_flag; | |
4596 Uint8 is_out_of_sync = 0; | |
4597 Uint32 my_queue_size = CircularQueueUnsignedInt_Size(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4598 /* | |
4599 fprintf(stderr, "Queue in processed check, before pop, buffers_processed=%d\n", buffers_processed); | |
4600 CircularQueueUnsignedInt_Print(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4601 */ | |
4602 /* We can't make any determinations solely based on the number of buffers_processed | |
4603 * because currently, we only unqueue 1 buffer per loop. That means if 2 or more | |
4604 * buffers became processed in one loop, the following loop, we would have | |
4605 * at least that_many-1 buffers_processed (plus possible new processed). | |
4606 * If we tried to just remove 1 buffer from our queue, we would be incorrect | |
4607 * because we would not actually reflect the current playing buffer. | |
4608 * So the solution seems to be to make sure our queue is the same size | |
4609 * as the number of buffers_queued-buffers_processed, and return the head of our queue | |
4610 * as the current playing buffer. | |
4611 */ | |
4612 /* Also, we have a corner case. When we first start playing or if we have | |
4613 * a buffer underrun, we have not done a data callback. | |
4614 * In this case, we need to see if there is any new data in our queue | |
4615 * and if so, launch that data callback. | |
4616 */ | |
4617 /* Warning, this code risks the possibility of no data callback being fired if | |
4618 * the system is really late (or skipped buffers). | |
4619 */ | |
4620 | |
4621 /* First, let's syncronize our queue with the OpenAL queue */ | |
4622 #if 0 | |
4623 fprintf(stderr, "inside, Buffers processed=%d, Buffers queued=%d, my queue=%d\n", | |
4624 buffers_processed, buffers_still_queued, my_queue_size); | |
4625 #endif | |
4626 if(my_queue_size > (buffers_still_queued - buffers_processed)) | |
4627 { | |
4628 is_out_of_sync = 1; | |
4629 for(k=0; k<(my_queue_size - (buffers_still_queued - buffers_processed)); k++) | |
4630 { | |
4631 queue_ret_flag = CircularQueueUnsignedInt_PopFront( | |
4632 ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4633 if(0 == queue_ret_flag) | |
4634 { | |
4635 fprintf(stderr, "53 Error popping queue\n"); | |
4636 } | |
4637 } | |
4638 } | |
4639 my_queue_size = CircularQueueUnsignedInt_Size(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4640 /* We have several possibilities we need to handle: | |
4641 * 1) We are in an initial state or underrun and need to do a data callback on the head. | |
4642 * 2) We were out of sync and need to do a new data callback on the new head. | |
4643 * 3) We were not out of sync but just had left over processed buffers which caused us to | |
4644 * fall in this block of code. (Don't do anything.) | |
4645 */ | |
4646 if( (0 == ALmixer_Channel_List[i].almixer_data->current_buffer) || (1 == is_out_of_sync) ) | |
4647 { | |
4648 if(my_queue_size > 0) | |
4649 { | |
4650 current_buffer_id = CircularQueueUnsignedInt_Front( | |
4651 ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4652 if(0 == current_buffer_id) | |
4653 { | |
4654 fprintf(stderr, "53a Internal Error, current_buffer_id=0 when it shouldn't be 0\n"); | |
4655 } | |
4656 /* | |
4657 else | |
4658 { | |
4659 fprintf(stderr, "Queue in processed check, after pop\n"); | |
4660 CircularQueueUnsignedInt_Print(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4661 } | |
4662 */ | |
4663 ALmixer_Channel_List[i].almixer_data->current_buffer | |
4664 = (ALuint)current_buffer_id; | |
4665 | |
4666 #if 0 | |
4667 /* Remove me...only for checking...doesn't work on Nvidia */ | |
4668 { | |
4669 ALuint real_id; | |
4670 alGetSourcei( | |
4671 ALmixer_Channel_List[i].alsource, | |
4672 AL_BUFFER, &real_id | |
4673 ); | |
4674 alGetError(); | |
4675 fprintf(stderr, "Callback fired on data buffer=%d, real_id shoud be=%d\n", current_buffer_id, real_id); | |
4676 } | |
4677 #endif | |
4678 Invoke_Streamed_Channel_Data_Callback(i, ALmixer_Channel_List[i].almixer_data, current_buffer_id); | |
4679 } | |
4680 else | |
4681 { | |
4682 fprintf(stderr, "53b, Notice/Warning:, OpenAL queue has been depleted.\n"); | |
4683 /* In this case, we might either be in an underrun or finished with playback */ | |
4684 ALmixer_Channel_List[i].almixer_data->current_buffer = 0; | |
4685 } | |
4686 } | |
4687 } | |
4688 #endif | |
4689 | |
4690 | |
4691 | |
4692 /* Just a test - remove | |
4693 if( ALmixer_Channel_List[i].loops > 0) | |
4694 { | |
4695 fprintf(stderr, ">>>>>>>>>>>>>>>Loops = %d\n", | |
4696 ALmixer_Channel_List[i].loops); | |
4697 } | |
4698 */ | |
4699 #if 0 | |
4700 fprintf(stderr, "Buffers processed = %d\n", buffers_processed); | |
4701 fprintf(stderr, "Buffers queued= %d\n", buffers_still_queued); | |
4702 #endif | |
4703 /* We've used up a buffer so we need to unqueue and replace */ | |
4704 /* Okay, it gets more complicated here: | |
4705 * We need to Queue more data | |
4706 * if buffers_processed > 0 or | |
4707 * if num_of_buffers_in_use < NUMBER_OF_QUEUE_BUFFERS | |
4708 * but we don't do this if at EOF, | |
4709 * except when there is looping | |
4710 */ | |
4711 /* For this to work, we must rely on EVERYTHING | |
4712 * else to unset the EOF if there is looping. | |
4713 * Remember, even Play() must do this | |
4714 */ | |
4715 | |
4716 /* If not EOF, then we are still playing. | |
4717 * Inside, we might find num_of_buffers < NUM...QUEUE_BUF.. | |
4718 * or buffers_process > 0 | |
4719 * in which case we queue up. | |
4720 * We also might find no buffers we need to fill, | |
4721 * in which case we just keep going | |
4722 */ | |
4723 if( ! ALmixer_Channel_List[i].almixer_data->eof) | |
4724 { | |
4725 Uint32 bytes_returned; | |
4726 /* We have a priority. We first must assign | |
4727 * unused buffers in reserve. If there is nothing | |
4728 * left, then we may unqueue buffers. We can't | |
4729 * do it the other way around because we will | |
4730 * lose the pointer to the unqueued buffer | |
4731 */ | |
4732 if(ALmixer_Channel_List[i].almixer_data->num_buffers_in_use | |
4733 < ALmixer_Channel_List[i].almixer_data->max_queue_buffers) | |
4734 { | |
4735 /* | |
4736 fprintf(stderr, "Getting more data in NOT_EOF and num_buffers_in_use (%d) < max_queue (%d)\n", | |
4737 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use, | |
4738 ALmixer_Channel_List[i].almixer_data->max_queue_buffers); | |
4739 */ | |
4740 /* Going to add an unused packet. | |
4741 * Grab next packet */ | |
4742 bytes_returned = GetMoreData( | |
4743 ALmixer_Channel_List[i].almixer_data, | |
4744 ALmixer_Channel_List[i].almixer_data->buffer[ | |
4745 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use] | |
4746 ); | |
4747 } | |
4748 /* For processed > 0 */ | |
4749 else if(buffers_processed > 0) | |
4750 { | |
4751 /* Unqueue only 1 buffer for now. | |
4752 * If there are more than one, | |
4753 * let the next Update pass deal with it | |
4754 * so we don't stall the program for too long. | |
4755 */ | |
4756 #if 0 | |
4757 fprintf(stderr, "About to Unqueue, Buffers processed = %d\n", buffers_processed); | |
4758 fprintf(stderr, "Buffers queued= %d\n", buffers_still_queued); | |
4759 fprintf(stderr, "Unqueuing a buffer\n"); | |
4760 #endif | |
4761 alSourceUnqueueBuffers( | |
4762 ALmixer_Channel_List[i].alsource, | |
4763 1, &unqueued_buffer_id | |
4764 ); | |
4765 if((error = alGetError()) != AL_NO_ERROR) | |
4766 { | |
4767 fprintf(stderr, "Error with unqueue: %s", | |
4768 aluGetErrorString(error)); | |
4769 ALmixer_SetError("Unqueue buffer failed: %s", | |
4770 aluGetErrorString(error) ); | |
4771 error_flag--; | |
4772 } | |
4773 /* | |
4774 fprintf(stderr, "Right after unqueue..."); | |
4775 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
4776 fprintf(stderr, "Getting more data for NOT_EOF, max_buffers filled\n"); | |
4777 */ | |
4778 /* Grab unqueued packet */ | |
4779 bytes_returned = GetMoreData( | |
4780 ALmixer_Channel_List[i].almixer_data, | |
4781 unqueued_buffer_id); | |
4782 } | |
4783 /* We are still streaming, but currently | |
4784 * don't need to fill any buffers */ | |
4785 else | |
4786 { | |
4787 /* Might want to check state */ | |
4788 /* In case the playback stopped, | |
4789 * we need to resume */ | |
4790 alGetSourcei( | |
4791 ALmixer_Channel_List[i].alsource, | |
4792 AL_SOURCE_STATE, &state | |
4793 ); | |
4794 if((error = alGetError()) != AL_NO_ERROR) | |
4795 { | |
4796 fprintf(stderr, "54Testing error: %s\n", | |
4797 aluGetErrorString(error)); | |
4798 } | |
4799 if(AL_STOPPED == state) | |
4800 { | |
4801 /* Resuming in not eof, but nothing to buffer */ | |
4802 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
4803 if((error = alGetError()) != AL_NO_ERROR) | |
4804 { | |
4805 fprintf(stderr, "55Testing error: %s\n", | |
4806 aluGetErrorString(error)); | |
4807 } | |
4808 } | |
4809 /* Let's escape to the next loop. | |
4810 * All code below this point is for queuing up | |
4811 */ | |
4812 /* | |
4813 fprintf(stderr, "Entry: Nothing to do...continue\n\n"); | |
4814 */ | |
4815 continue; | |
4816 } | |
4817 /* We now know we have to fill an available | |
4818 * buffer. | |
4819 */ | |
4820 | |
4821 /* In the previous branch, we just grabbed more data. | |
4822 * Let's check it to make sure it's okay, | |
4823 * and then queue it up | |
4824 */ | |
4825 /* This check doesn't work anymore because it is now Uint32 */ | |
4826 #if 0 | |
4827 if(-1 == bytes_returned) | |
4828 { | |
4829 /* Problem occurred...not sure what to do */ | |
4830 /* Go to next loop? */ | |
4831 error_flag--; | |
4832 /* Set the eof flag to force a quit so | |
4833 * we don't get stuck in an infinite loop | |
4834 */ | |
4835 ALmixer_Channel_List[i].almixer_data->eof = 1; | |
4836 continue; | |
4837 } | |
4838 #endif | |
4839 /* This is a special case where we've run | |
4840 * out of data. We should check for loops | |
4841 * and get more data. If there is no loop, | |
4842 * then do nothing and wait for future | |
4843 * update passes to handle the EOF. | |
4844 * The advantage of handling the loop here | |
4845 * instead of waiting for play to stop is | |
4846 * that we should be able to keep the buffer | |
4847 * filled. | |
4848 */ | |
4849 #if 0 | |
4850 else if(0 == bytes_returned) | |
4851 #endif | |
4852 if(0 == bytes_returned) | |
4853 { | |
4854 fprintf(stderr, "We got 0 bytes from reading. Checking for loops\n"); | |
4855 /* Check for loops */ | |
4856 if( ALmixer_Channel_List[i].loops != 0 ) | |
4857 { | |
4858 /* We have to loop, so rewind | |
4859 * and fetch more data | |
4860 */ | |
4861 fprintf(stderr, "Rewinding data\n"); | |
4862 if(0 == Sound_Rewind( | |
4863 ALmixer_Channel_List[i].almixer_data->sample)) | |
4864 { | |
4865 fprintf(stderr, "Rewinding failed\n"); | |
4866 ALmixer_SetError( Sound_GetError() ); | |
4867 ALmixer_Channel_List[i].loops = 0; | |
4868 error_flag--; | |
4869 /* We'll continue on because we do have some valid data */ | |
4870 continue; | |
4871 } | |
4872 /* Remember to reset the data->eof flag */ | |
4873 ALmixer_Channel_List[i].almixer_data->eof = 0; | |
4874 if(ALmixer_Channel_List[i].loops > 0) | |
4875 { | |
4876 ALmixer_Channel_List[i].loops--; | |
4877 } | |
4878 /* Try grabbing another packet now. | |
4879 * Since we may have already unqueued a | |
4880 * buffer, we don't want to lose it. | |
4881 */ | |
4882 if(ALmixer_Channel_List[i].almixer_data->num_buffers_in_use | |
4883 < ALmixer_Channel_List[i].almixer_data->max_queue_buffers) | |
4884 { | |
4885 fprintf(stderr, "We got %d bytes from reading loop. Filling unused packet\n", bytes_returned); | |
4886 /* Grab next packet */ | |
4887 bytes_returned = GetMoreData( | |
4888 ALmixer_Channel_List[i].almixer_data, | |
4889 ALmixer_Channel_List[i].almixer_data->buffer[ | |
4890 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use] | |
4891 ); | |
4892 fprintf(stderr, "We reread %d bytes into unused packet\n", bytes_returned); | |
4893 } | |
4894 /* Refilling unqueued packet */ | |
4895 else | |
4896 { | |
4897 fprintf(stderr, "We got %d bytes from reading loop. Filling unqueued packet\n", bytes_returned); | |
4898 /* Grab next packet */ | |
4899 bytes_returned = GetMoreData( | |
4900 ALmixer_Channel_List[i].almixer_data, | |
4901 unqueued_buffer_id); | |
4902 fprintf(stderr, "We reread %d bytes into unqueued packet\n", bytes_returned); | |
4903 } | |
4904 /* Another error check */ | |
4905 /* | |
4906 if(bytes_returned <= 0) | |
4907 */ | |
4908 if(0 == bytes_returned) | |
4909 { | |
4910 fprintf(stderr, "??????????ERROR\n"); | |
4911 ALmixer_SetError("Could not loop because after rewind, no data could be retrieved"); | |
4912 /* Problem occurred...not sure what to do */ | |
4913 /* Go to next loop? */ | |
4914 error_flag--; | |
4915 /* Set the eof flag to force a quit so | |
4916 * we don't get stuck in an infinite loop | |
4917 */ | |
4918 ALmixer_Channel_List[i].almixer_data->eof = 1; | |
4919 continue; | |
4920 } | |
4921 /* We made it to the end. We still need | |
4922 * to BufferData, so let this branch | |
4923 * fall into the next piece of | |
4924 * code below which will handle that | |
4925 */ | |
4926 | |
4927 | |
4928 } /* END loop check */ | |
4929 else | |
4930 { | |
4931 /* No more loops to do. | |
4932 * EOF flag should be set. | |
4933 * Just go to next loop and | |
4934 * let things be handled correctly | |
4935 * in future update calls | |
4936 */ | |
4937 fprintf(stderr, "SHOULD BE EOF\n"); | |
4938 | |
4939 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
4940 | |
4941 continue; | |
4942 } | |
4943 } /* END if bytes_returned == 0 */ | |
4944 /********* Possible trouble point. I might be queueing empty buffers on the mac. | |
4945 * This check doesn't say if the buffer is valid. Only the EOF assumption is a clue at this point | |
4946 */ | |
4947 /* Fall here */ | |
4948 /* Everything is normal. We aren't | |
4949 * at an EOF, but need to simply | |
4950 * queue more data. The data is already checked for good, | |
4951 * so queue it up */ | |
4952 if(ALmixer_Channel_List[i].almixer_data->num_buffers_in_use | |
4953 < ALmixer_Channel_List[i].almixer_data->max_queue_buffers) | |
4954 { | |
4955 /* Keep count of how many buffers we have | |
4956 * to queue so we can return the value | |
4957 */ | |
4958 retval++; | |
4959 fprintf(stderr, "NOT_EOF???, about to Queue more data for num_buffers (%d) < max_queue (%d)\n", | |
4960 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use, | |
4961 ALmixer_Channel_List[i].almixer_data->max_queue_buffers); | |
4962 | |
4963 alSourceQueueBuffers( | |
4964 ALmixer_Channel_List[i].alsource, | |
4965 1, | |
4966 &ALmixer_Channel_List[i].almixer_data->buffer[ | |
4967 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use] | |
4968 ); | |
4969 if((error = alGetError()) != AL_NO_ERROR) | |
4970 { | |
4971 fprintf(stderr, "56Testing error: %s\n", | |
4972 aluGetErrorString(error)); | |
4973 } | |
4974 /* This is part of the hideous Nvidia workaround. In order to figure out | |
4975 * which buffer to show during callbacks (for things like | |
4976 * o-scopes), I must keep a copy of the buffers that are queued in my own | |
4977 * data structure. This code will be called only if | |
4978 * "access_data" was set, indicated by whether the queue is NULL. | |
4979 */ | |
4980 if(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue != NULL) | |
4981 { | |
4982 Uint32 queue_ret_flag; | |
4983 queue_ret_flag = CircularQueueUnsignedInt_PushBack( | |
4984 ALmixer_Channel_List[i].almixer_data->circular_buffer_queue, | |
4985 ALmixer_Channel_List[i].almixer_data->buffer[ALmixer_Channel_List[i].almixer_data->num_buffers_in_use] | |
4986 ); | |
4987 if(0 == queue_ret_flag) | |
4988 { | |
4989 fprintf(stderr, "56aSerious internal error: CircularQueue could not push into queue.\n"); | |
4990 ALmixer_SetError("Serious internal error: CircularQueue failed to push into queue"); | |
4991 } | |
4992 /* | |
4993 else | |
4994 { | |
4995 CircularQueueUnsignedInt_Print(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
4996 } | |
4997 */ | |
4998 } | |
4999 } | |
5000 /* for processed > 0 */ | |
5001 else | |
5002 { | |
5003 /* Keep count of how many buffers we have | |
5004 * to queue so we can return the value | |
5005 */ | |
5006 retval++; | |
5007 /* | |
5008 fprintf(stderr, "NOT_EOF, about to Queue more data for filled max_queue (%d)\n", | |
5009 ALmixer_Channel_List[i].almixer_data->max_queue_buffers); | |
5010 */ | |
5011 alSourceQueueBuffers( | |
5012 ALmixer_Channel_List[i].alsource, | |
5013 1, &unqueued_buffer_id); | |
5014 if((error = alGetError()) != AL_NO_ERROR) | |
5015 { | |
5016 ALmixer_SetError("Could not QueueBuffer: %s", | |
5017 aluGetErrorString(error) ); | |
5018 error_flag--; | |
5019 continue; | |
5020 } | |
5021 /* This is part of the hideous Nvidia workaround. In order to figure out | |
5022 * which buffer to show during callbacks (for things like | |
5023 * o-scopes), I must keep a copy of the buffers that are queued in my own | |
5024 * data structure. This code will be called only if | |
5025 * "access_data" was set, indicated by whether the queue is NULL. | |
5026 */ | |
5027 if(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue != NULL) | |
5028 { | |
5029 Uint32 queue_ret_flag; | |
5030 queue_ret_flag = CircularQueueUnsignedInt_PushBack( | |
5031 ALmixer_Channel_List[i].almixer_data->circular_buffer_queue, | |
5032 unqueued_buffer_id | |
5033 ); | |
5034 if(0 == queue_ret_flag) | |
5035 { | |
5036 fprintf(stderr, "56bSerious internal error: CircularQueue could not push into queue.\n"); | |
5037 ALmixer_SetError("Serious internal error: CircularQueue failed to push into queue"); | |
5038 } | |
5039 /* | |
5040 else | |
5041 { | |
5042 CircularQueueUnsignedInt_Print(ALmixer_Channel_List[i].almixer_data->circular_buffer_queue); | |
5043 } | |
5044 */ | |
5045 } | |
5046 } | |
5047 /* If we used an available buffer queue, | |
5048 * then we need to update the number of them in use | |
5049 */ | |
5050 if(ALmixer_Channel_List[i].almixer_data->num_buffers_in_use | |
5051 < ALmixer_Channel_List[i].almixer_data->max_queue_buffers) | |
5052 { | |
5053 /* Increment the number of buffers in use */ | |
5054 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use++; | |
5055 } | |
5056 /* Might want to check state */ | |
5057 /* In case the playback stopped, | |
5058 * we need to resume */ | |
5059 alGetSourcei( | |
5060 ALmixer_Channel_List[i].alsource, | |
5061 AL_SOURCE_STATE, &state | |
5062 ); | |
5063 if((error = alGetError()) != AL_NO_ERROR) | |
5064 { | |
5065 fprintf(stderr, "57Testing error: %s\n", | |
5066 aluGetErrorString(error)); | |
5067 } | |
5068 if(AL_STOPPED == state) | |
5069 { | |
5070 fprintf(stderr, "Resuming in not eof\n"); | |
5071 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
5072 if((error = alGetError()) != AL_NO_ERROR) | |
5073 { | |
5074 fprintf(stderr, "58Testing error: %s\n", | |
5075 aluGetErrorString(error)); | |
5076 } | |
5077 } | |
5078 continue; | |
5079 } /* END if( ! eof) */ | |
5080 /* We have hit EOF in the SDL_Sound sample and there | |
5081 * are no more loops. However, there may still be | |
5082 * buffers in the OpenAL queue which still need to | |
5083 * be played out. The following body of code will | |
5084 * determine if play is still happening or | |
5085 * initiate the stop/cleanup sequenece. | |
5086 */ | |
5087 else | |
5088 { | |
5089 /* Let's continue to remove the used up | |
5090 * buffers as they come in. */ | |
5091 if(buffers_processed > 0) | |
5092 { | |
5093 Sint32 temp_count; | |
5094 /* Do as a for-loop because I don't want | |
5095 * to have to create an array for the | |
5096 * unqueued_buffer_id's | |
5097 */ | |
5098 for(temp_count=0; temp_count<buffers_processed; temp_count++) | |
5099 { | |
5100 fprintf(stderr, "unqueuing remainder, %d\n", temp_count); | |
5101 alSourceUnqueueBuffers( | |
5102 ALmixer_Channel_List[i].alsource, | |
5103 1, &unqueued_buffer_id | |
5104 ); | |
5105 if((error = alGetError()) != AL_NO_ERROR) | |
5106 { | |
5107 fprintf(stderr, "59Testing error: %s\n", | |
5108 aluGetErrorString(error)); | |
5109 } | |
5110 } | |
5111 fprintf(stderr, "done unqueuing remainder for this loop, %d\n", temp_count); | |
5112 | |
5113 /* Need to update counts since we removed everything. | |
5114 * If we don't update the counts here, we end up in the | |
5115 * "Shouldn't be here section, but maybe it's okay due to race conditions" | |
5116 */ | |
5117 alGetSourcei( | |
5118 ALmixer_Channel_List[i].alsource, | |
5119 AL_BUFFERS_QUEUED, &buffers_still_queued | |
5120 ); | |
5121 if((error = alGetError()) != AL_NO_ERROR) | |
5122 { | |
5123 fprintf(stderr, "5100Testing error: %s\n", | |
5124 aluGetErrorString(error)); | |
5125 } | |
5126 /* Get the number of buffers processed | |
5127 * so we know if we need to refill | |
5128 */ | |
5129 alGetSourcei( | |
5130 ALmixer_Channel_List[i].alsource, | |
5131 AL_BUFFERS_PROCESSED, &buffers_processed | |
5132 ); | |
5133 if((error = alGetError()) != AL_NO_ERROR) | |
5134 { | |
5135 fprintf(stderr, "5200Testing error: %s\n", | |
5136 aluGetErrorString(error)); | |
5137 } | |
5138 } | |
5139 | |
5140 | |
5141 /* Else if buffers_processed == 0 | |
5142 * and buffers_still_queued == 0. | |
5143 * then we check to see if the source | |
5144 * is still playing. Quit if stopped | |
5145 * We shouldn't need to worry about | |
5146 * looping because that should have | |
5147 * been handled above. | |
5148 */ | |
5149 if(0 == buffers_still_queued) | |
5150 { | |
5151 /* Make sure playback has stopped before | |
5152 * we shutdown. | |
5153 */ | |
5154 alGetSourcei( | |
5155 ALmixer_Channel_List[i].alsource, | |
5156 AL_SOURCE_STATE, &state | |
5157 ); | |
5158 if((error = alGetError()) != AL_NO_ERROR) | |
5159 { | |
5160 fprintf(stderr, "60Testing error: %s\n", | |
5161 aluGetErrorString(error)); | |
5162 } | |
5163 if(AL_STOPPED == state) | |
5164 { | |
5165 ALmixer_Channel_List[i].almixer_data->num_buffers_in_use = 0; | |
5166 /* Playback has ended. | |
5167 * Loop if necessary, or launch callback | |
5168 * and clear channel (or clear channel and | |
5169 * then launch callback?) | |
5170 */ | |
5171 Clean_Channel(i); | |
5172 /* Subtract counter */ | |
5173 Is_Playing_global--; | |
5174 | |
5175 /* Launch callback */ | |
5176 Invoke_Channel_Done_Callback(i); | |
5177 | |
5178 /* We're done for this loop. | |
5179 * Go to next channel | |
5180 */ | |
5181 continue; | |
5182 } | |
5183 } /* End end-playback */ | |
5184 else | |
5185 { | |
5186 /* Need to run out buffer */ | |
5187 #if 1 | |
5188 /* Might want to check state */ | |
5189 /* In case the playback stopped, | |
5190 * we need to resume */ | |
5191 alGetSourcei( | |
5192 ALmixer_Channel_List[i].alsource, | |
5193 AL_SOURCE_STATE, &state | |
5194 ); | |
5195 if((error = alGetError()) != AL_NO_ERROR) | |
5196 { | |
5197 fprintf(stderr, "61Testing error: %s\n", | |
5198 aluGetErrorString(error)); | |
5199 } | |
5200 if(AL_STOPPED == state) | |
5201 { | |
5202 fprintf(stderr, "Shouldn't be here. %d Buffers still in queue, but play stopped. This might be correct though because race conditions could have caused the STOP to happen right after our other tests...Checking queue status...\n", buffers_still_queued); | |
5203 | |
5204 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
5205 | |
5206 /* Rather than force unqueuing the buffer, let's see if | |
5207 * setting the buffer to none works (the OpenAL 1.0 | |
5208 * Reference Annotation suggests this should work). | |
5209 */ | |
5210 alSourcei(ALmixer_Channel_List[i].alsource, | |
5211 AL_BUFFER, AL_NONE); | |
5212 /* | |
5213 PrintQueueStatus(ALmixer_Channel_List[i].alsource); | |
5214 */ | |
5215 /* This doesn't work because in some cases, I think | |
5216 * it causes the sound to be replayed | |
5217 */ | |
5218 /* | |
5219 fprintf(stderr, "Resuming in eof (trying to run out buffers\n"); | |
5220 alSourcePlay(ALmixer_Channel_List[i].alsource); | |
5221 */ | |
5222 } | |
5223 #endif | |
5224 } /* End trap section */ | |
5225 } /* End POST-EOF use-up buffer section */ | |
5226 } /* END Streamed section */ | |
5227 } /* END channel in use */ | |
5228 } /* END for-loop for each channel */ | |
5229 | |
5230 #ifdef ENABLE_ALMIXER_ALC_SYNC | |
5231 alcProcessContext(alcGetCurrentContext()); | |
5232 if((error = alGetError()) != AL_NO_ERROR) | |
5233 { | |
5234 fprintf(stderr, "62Testing error: %s\n", | |
5235 aluGetErrorString(error)); | |
5236 } | |
5237 #endif | |
5238 | |
5239 SDL_UnlockMutex(simple_lock); | |
5240 /* Return the number of errors */ | |
5241 if(error_flag < 0) | |
5242 { | |
5243 return error_flag; | |
5244 } | |
5245 /* Return the number of buffers that were queued */ | |
5246 return retval; | |
5247 } | |
5248 | |
5249 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
5250 /* This is only here so we can call SDL_OpenAudio() */ | |
5251 static void my_dummy_audio_callback(void* userdata, Uint8* stream, int len) | |
5252 { | |
5253 } | |
5254 #endif | |
5255 | |
5256 | |
5257 | |
5258 | |
5259 #ifdef ENABLE_ALMIXER_THREADS | |
5260 /* We might need threads. We | |
5261 * must constantly poll OpenAL to find out | |
5262 * if sound is being streamed, if play has | |
5263 * ended, etc. Without threads, this must | |
5264 * be explicitly done by the user. | |
5265 * We could try to do it for them if we | |
5266 * finish the threads. | |
5267 */ | |
5268 | |
5269 static int Stream_Data_Thread_Callback(void* data) | |
5270 { | |
5271 Sint32 retval; | |
5272 | |
5273 while(ALmixer_Initialized) | |
5274 { | |
5275 retval = Update_ALmixer(data); | |
5276 /* 0 means that nothing needed updating and | |
5277 * the function returned quickly | |
5278 */ | |
5279 if(0 == retval) | |
5280 { | |
5281 /* Let's be nice and make the thread sleep since | |
5282 * little work was done in update | |
5283 */ | |
5284 /* Make sure times are multiples of 10 | |
5285 * for optimal performance and accuracy in Linux | |
5286 */ | |
5287 SDL_Delay(10); | |
5288 } | |
5289 else | |
5290 { | |
5291 /* should I also be sleeping/yielding here? */ | |
5292 SDL_Delay(0); | |
5293 } | |
5294 } | |
5295 fprintf(stderr, "Thread is closing\n"); | |
5296 return 0; | |
5297 } | |
5298 #endif /* End of ENABLE_ALMIXER_THREADS */ | |
5299 | |
5300 | |
5301 /* Using -1 on error and 0 on success to follow SDL/SDL_mixer conventions, | |
5302 * though I actually prefer 0/1 conventions (SDL_Sound/OpenAL/GL). | |
5303 * Warning: SDL_QuitSubSystem(SDL_INIT_AUDIO) is called which | |
5304 * means the SDL audio system will be disabled. It will not | |
5305 * be restored (in case SDL is not actually being used) so | |
5306 * the user will need to restart it if they need it after | |
5307 * OpenAL shuts down. | |
5308 */ | |
5309 Sint32 ALmixer_Init(Uint32 frequency, Sint32 num_sources, Uint32 refresh) | |
5310 { | |
5311 ALCdevice* dev; | |
5312 ALCcontext* context; | |
5313 Sint32 i; | |
5314 ALenum error; | |
5315 ALuint* source; | |
5316 | |
5317 #ifdef USING_LOKI_AL_DIST | |
5318 /* The Loki dist requires that I set both the | |
5319 * device and context frequency values separately | |
5320 */ | |
5321 /* Hope this won't overflow */ | |
5322 char device_string[256]; | |
5323 #endif | |
5324 | |
5325 /* (Venting frustration) Damn it! Nobody bothered | |
5326 * documenting how you're supposed to use an attribute | |
5327 * list. In fact, the not even the Loki test program | |
5328 * writers seem to know because they use it inconsistently. | |
5329 * For example, how do you terminate that attribute list? | |
5330 * The Loki test code does it 3 different ways. They | |
5331 * set the last value to 0, or they set it to ALC_INVALID, | |
5332 * or they set two final values: ALC_INVALID, 0 | |
5333 * In Loki, 0 and ALC_INVALID happen to be the same, | |
5334 * but with Creative Labs ALC_INVALID is -1. | |
5335 * So something's going to break. Loki's source | |
5336 * code says to terminate with ALC_INVALID. But I | |
5337 * don't know if that's really true, or it happens | |
5338 * to be a coinicidence because it's defined to 0. | |
5339 * Creative provides no source code, so I can't look at how | |
5340 * they terminate it. | |
5341 * So this is really, really ticking me off... | |
5342 * For now, I'm going to use ALC_INVALID. | |
5343 * (Update...after further review of the API spec, | |
5344 * it seems that a NULL terminated string is the correct | |
5345 * termination value to use, so 0 it is.) | |
5346 */ | |
5347 #if 0 | |
5348 ALint attrlist[] = { | |
5349 ALC_FREQUENCY, ALMIXER_DEFAULT_FREQUENCY, | |
5350 /* Don't know anything about these values. | |
5351 * Trust defaults? */ | |
5352 /* Supposed to be the refresh rate in Hz. | |
5353 * I think 15-120 are supposed to be good | |
5354 * values. Though I haven't gotten any effect except | |
5355 * for one strange instance on a Mac. But it was | |
5356 * unrepeatable. | |
5357 */ | |
5358 #if 0 | |
5359 ALC_REFRESH, 15, | |
5360 #endif | |
5361 /* Sync requires a alcProcessContext() call | |
5362 * for every cycle. By default, this is | |
5363 * not used and the value is AL_FALSE | |
5364 * because it will probably perform | |
5365 * pretty badly for me. | |
5366 */ | |
5367 #ifdef ENABLE_ALMIXER_ALC_SYNC | |
5368 ALC_SYNC, AL_TRUE, | |
5369 #else | |
5370 ALC_SYNC, AL_FALSE, | |
5371 #endif | |
5372 /* Looking at the API spec, it implies | |
5373 * that the list be a NULL terminated string | |
5374 * so it's probably not safe to use ALC_INVALID | |
5375 */ | |
5376 /* | |
5377 ALC_INVALID }; | |
5378 */ | |
5379 '\0'}; | |
5380 #endif | |
5381 /* Redo: I'm going to allow ALC_REFRESH to be set. | |
5382 * However, if no value is specified, I don't | |
5383 * want it in the list so I can get the OpenAL defaults | |
5384 */ | |
5385 ALint attrlist[7]; | |
5386 | |
5387 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
5388 /* More problems: I'm getting bit by endian/signedness issues on | |
5389 * different platforms. I can find the endianess easily enough, | |
5390 * but I don't know how to determine what the correct signedness | |
5391 * is (if such a thing exists). I do know that if I try using | |
5392 * unsigned on OSX with an originally signed sample, I get | |
5393 * distortion. However, I don't have any native unsigned samples | |
5394 * to test. But I'm assuming that the platform must be in the | |
5395 * correct signedness no matter what. | |
5396 * I can either assume everybody is signed, or I can try to | |
5397 * determine the value. If I try to determine the values, | |
5398 * I think my only ability to figure it out will be to open | |
5399 * SDL_Audio, and read what the obtained settings were. | |
5400 * Then shutdown everything. However, I don't even know how | |
5401 * reliable this is. | |
5402 * Update: I think I resolved the issues...forgot to update | |
5403 * these comments when it happened. I should check the revision control | |
5404 * log... Anyway, I think the issue was partly related to me not | |
5405 * doing something correctly with the AudioInfo or some kind | |
5406 * of stupid endian bug in my code, and weirdness ensued. Looking at the | |
5407 * revision control, I think I might have assumed that SDL_Sound would | |
5408 * do the right thing with a NULL AudioInfo, but I was incorrect, | |
5409 * and had to fill one out myself. | |
5410 */ | |
5411 SDL_AudioSpec desired; | |
5412 SDL_AudioSpec obtained; | |
5413 #endif | |
5414 | |
5415 | |
5416 | |
5417 | |
5418 /* Make sure ALmixer isn't already initialized */ | |
5419 if(ALmixer_Initialized) | |
5420 { | |
5421 return -1; | |
5422 } | |
5423 #ifdef USING_LOKI_AL_DIST | |
5424 fprintf(stderr, "Found Loki dist\n"); | |
5425 #elif defined(USING_CREATIVE_AL_DIST) | |
5426 fprintf(stderr, "Found Creative dist\n"); | |
5427 | |
5428 #elif defined(USING_NVIDIA_AL_DIST) | |
5429 fprintf(stderr, "Found Nvidia dist\n"); | |
5430 #endif | |
5431 | |
5432 /* Set the defaults */ | |
5433 attrlist[0] = ALC_FREQUENCY; | |
5434 attrlist[1] = ALMIXER_DEFAULT_FREQUENCY; | |
5435 attrlist[2] = ALC_SYNC; | |
5436 #ifdef ENABLE_ALMIXER_ALC_SYNC | |
5437 attrlist[3] = ALC_TRUE; | |
5438 #else | |
5439 attrlist[3] = ALC_FALSE; | |
5440 #endif | |
5441 | |
5442 /* Set frequency value if it is not 0 */ | |
5443 if(0 != frequency) | |
5444 { | |
5445 attrlist[1] = (ALint)frequency; | |
5446 } | |
5447 | |
5448 /* If the user specifies a refresh value, | |
5449 * make room for it | |
5450 */ | |
5451 if(0 != refresh) | |
5452 { | |
5453 attrlist[4] = (ALint)ALC_REFRESH; | |
5454 attrlist[5] = refresh; | |
5455 attrlist[6] = '\0'; | |
5456 } | |
5457 /* Terminate the list without any refresh values */ | |
5458 else | |
5459 { | |
5460 attrlist[4] = '\0'; | |
5461 } | |
5462 | |
5463 /* It looks like OpenAL won't let us ask it what | |
5464 * the set frequency is, so we need to save our | |
5465 * own copy. Yuck. | |
5466 * Update: J. Valenzuela just updated the Loki | |
5467 * dist (2003/01/02) to handle this. | |
5468 * The demo is in testattrib.c. However, this | |
5469 * looks kind of cumbersome to parse, and I've | |
5470 * already put this in my code, so I guess I'll | |
5471 * leave it for now. | |
5472 */ | |
5473 ALmixer_Frequency_global = attrlist[1]; | |
5474 | |
5475 /* Initialize SDL_Sound */ | |
5476 if(! Sound_Init() ) | |
5477 { | |
5478 ALmixer_SetError(Sound_GetError()); | |
5479 return -1; | |
5480 } | |
5481 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
5482 /* Here is the paranoid check that opens | |
5483 * SDL audio in an attempt to find the correct | |
5484 * system values. | |
5485 */ | |
5486 /* Doesn't have to be the actual value I think | |
5487 * (as long as it doesn't influence format, in | |
5488 * which case I'm probably screwed anyway because OpenAL | |
5489 * may easily choose to do something else). | |
5490 */ | |
5491 desired.freq = 44100; | |
5492 desired.channels = 2; | |
5493 desired.format = AUDIO_S16SYS; | |
5494 desired.callback = my_dummy_audio_callback; | |
5495 if(SDL_OpenAudio(&desired, &obtained) >= 0) | |
5496 { | |
5497 SIGN_TYPE_16BIT_FORMAT = obtained.format; | |
5498 /* Now to get really paranoid, we should probably | |
5499 * also assume that the 8bit format is also the | |
5500 * same sign type and set that value | |
5501 */ | |
5502 if(AUDIO_S16SYS == obtained.format) | |
5503 { | |
5504 SIGN_TYPE_8BIT_FORMAT = AUDIO_S8; | |
5505 } | |
5506 /* Should be AUDIO_U16SYS */ | |
5507 else | |
5508 { | |
5509 SIGN_TYPE_8BIT_FORMAT = AUDIO_U8; | |
5510 } | |
5511 SDL_CloseAudio(); | |
5512 fprintf(stderr, "Obtained format = %d", obtained.format); | |
5513 } | |
5514 else | |
5515 { | |
5516 /* Well, I guess I'm in trouble. I guess it's my best guess | |
5517 */ | |
5518 SIGN_TYPE_16_BIT_FORMAT = AUDIO_S16SYS; | |
5519 SIGN_TYPE_8_BIT_FORMAT = AUDIO_S8; | |
5520 } | |
5521 #endif | |
5522 /* Weirdness: It seems that SDL_Init(SDL_INIT_AUDIO) | |
5523 * causes OpenAL and SMPEG to conflict. For some reason | |
5524 * if SDL_Init on audio is active, then all the SMPEG | |
5525 * decoded sound comes out silent. Unfortunately, | |
5526 * Sound_Init() invokes SDL_Init on audio. I'm | |
5527 * not sure why it actually needs it... | |
5528 * But we'll attempt to disable it here after the | |
5529 * SDL_Sound::Init call and hope it doesn't break SDL_Sound. | |
5530 */ | |
5531 SDL_QuitSubSystem(SDL_INIT_AUDIO); | |
5532 | |
5533 /* I'm told NULL will call the default string | |
5534 * and hopefully do the right thing for each platform | |
5535 */ | |
5536 /* | |
5537 dev = alcOpenDevice( NULL ); | |
5538 */ | |
5539 /* Now I'm told I need to set both the device and context | |
5540 * to have the same sampling rate, so I must pass a string | |
5541 * to OpenDevice(). I don't know how portable these strings are. | |
5542 * I don't even know if the format for strings is | |
5543 * compatible | |
5544 * From the testattrib.c in the Loki test section | |
5545 * dev = alcOpenDevice( (const ALubyte *) "'((sampling-rate 22050))" ); | |
5546 */ | |
5547 | |
5548 #ifdef USING_LOKI_AL_DIST | |
5549 sprintf(device_string, "'((sampling-rate %d))", attrlist[1]); | |
5550 dev = alcOpenDevice( (const ALubyte *) device_string ); | |
5551 #else | |
5552 dev = alcOpenDevice( NULL ); | |
5553 #endif | |
5554 fprintf(stderr,"sampling-rate is %d\n", attrlist[1]); | |
5555 if(NULL == dev) | |
5556 { | |
5557 ALmixer_SetError("Cannot open sound device for OpenAL"); | |
5558 return -1; | |
5559 } | |
5560 | |
5561 context = alcCreateContext(dev, attrlist); | |
5562 if(NULL == context) | |
5563 { | |
5564 ALmixer_SetError("Cannot create a context OpenAL"); | |
5565 alcCloseDevice(dev); | |
5566 return -1; | |
5567 } | |
5568 fprintf(stderr, "Context checking...\n"); | |
5569 | |
5570 | |
5571 /* Hmmm, OSX is returning 1 on alcMakeContextCurrent, | |
5572 * but ALC_NO_ERROR is defined to ALC_FALSE. | |
5573 * According to Garin Hiebert, this is actually an inconsistency | |
5574 * in the Loki version. The function should return a boolean. | |
5575 * instead of ALC_NO_ERROR. Garin suggested I check via | |
5576 * alcGetError(). | |
5577 */ | |
5578 /* clear the error */ | |
5579 alcGetError(dev); | |
5580 alcMakeContextCurrent(context); | |
5581 | |
5582 error = alcGetError(dev); | |
5583 if( (ALC_NO_ERROR != error) ) | |
5584 { | |
5585 ALmixer_SetError("Could not MakeContextCurrent"); | |
5586 alcDestroyContext(context); | |
5587 alcCloseDevice(dev); | |
5588 return -1; | |
5589 } | |
5590 | |
5591 | |
5592 #if 0 | |
5593 /* OSX is failing on alcMakeContextCurrent(). Try checking it first? */ | |
5594 if(alcGetCurrentContext() != context) | |
5595 { | |
5596 /* Hmmm, OSX is returning 1 on alcMakeContextCurrent, | |
5597 * but ALC_NO_ERROR is defined to ALC_FALSE. | |
5598 * I think this is a bug in the OpenAL implementation. | |
5599 */ | |
5600 fprintf(stderr,"alcMakeContextCurrent returns %d\n", alcMakeContextCurrent(context)); | |
5601 | |
5602 fprintf(stderr, "Making context current\n"); | |
5603 #ifndef __APPLE__ | |
5604 if(alcMakeContextCurrent(context) != ALC_NO_ERROR) | |
5605 #else | |
5606 if(!alcMakeContextCurrent(context)) | |
5607 #endif | |
5608 { | |
5609 ALmixer_SetError("Could not MakeContextCurrent"); | |
5610 alcDestroyContext(context); | |
5611 alcCloseDevice(dev); | |
5612 return -1; | |
5613 } | |
5614 } | |
5615 #endif | |
5616 | |
5617 | |
5618 /* #endif */ | |
5619 fprintf(stderr, "done Context\n"); | |
5620 /* Saw this in the README with the OS X OpenAL distribution. | |
5621 * It looked interesting and simple, so I thought I might | |
5622 * try it out. | |
5623 * ***** ALC_CONVERT_DATA_UPON_LOADING | |
5624 * This extension allows the caller to tell OpenAL to preconvert to the native Core | |
5625 * Audio format, the audio data passed to the | |
5626 * library with the alBufferData() call. Preconverting the audio data, reduces CPU | |
5627 * usage by removing an audio data conversion | |
5628 * (per source) at render timem at the expense of a larger memory footprint. | |
5629 * | |
5630 * This feature is toggled on/off by using the alDisable() & alEnable() APIs. This | |
5631 * setting will be applied to all subsequent | |
5632 * calls to alBufferData(). | |
5633 */ | |
5634 #ifdef __APPLE__ | |
5635 alEnable(ALC_CONVERT_DATA_UPON_LOADING); | |
5636 #endif | |
5637 | |
5638 | |
5639 | |
5640 | |
5641 ALmixer_Initialized = 1; | |
5642 | |
5643 if(num_sources <= 0) | |
5644 { | |
5645 Number_of_Channels_global = ALMIXER_DEFAULT_NUM_CHANNELS; | |
5646 } | |
5647 else | |
5648 { | |
5649 Number_of_Channels_global = num_sources; | |
5650 } | |
5651 Number_of_Reserve_Channels_global = 0; | |
5652 Is_Playing_global = 0; | |
5653 /* Set to Null in case system quit and was reinitialized */ | |
5654 Channel_Done_Callback = NULL; | |
5655 Channel_Done_Callback_Userdata = NULL; | |
5656 Channel_Data_Callback = NULL; | |
5657 | |
5658 /* Allocate memory for the list of channels */ | |
5659 ALmixer_Channel_List = (struct ALmixer_Channel*) malloc(Number_of_Channels_global * sizeof(struct ALmixer_Channel)); | |
5660 if(NULL == ALmixer_Channel_List) | |
5661 { | |
5662 ALmixer_SetError("Out of Memory for Channel List"); | |
5663 alcDestroyContext(context); | |
5664 alcCloseDevice(dev); | |
5665 ALmixer_Initialized = 0; | |
5666 Number_of_Channels_global = 0; | |
5667 return -1; | |
5668 } | |
5669 | |
5670 /* Allocate memory for the list of sources that map to the channels */ | |
5671 Source_Map_List = (Source_Map*) malloc(Number_of_Channels_global * sizeof(Source_Map)); | |
5672 if(NULL == Source_Map_List) | |
5673 { | |
5674 ALmixer_SetError("Out of Memory for Source Map List"); | |
5675 free(ALmixer_Channel_List); | |
5676 alcDestroyContext(context); | |
5677 alcCloseDevice(dev); | |
5678 ALmixer_Initialized = 0; | |
5679 Number_of_Channels_global = 0; | |
5680 return -1; | |
5681 } | |
5682 | |
5683 /* Create array that will hold the sources */ | |
5684 source = (ALuint*)malloc(Number_of_Channels_global * sizeof(ALuint)); | |
5685 if(NULL == source) | |
5686 { | |
5687 ALmixer_SetError("Out of Memory for sources"); | |
5688 free(Source_Map_List); | |
5689 free(ALmixer_Channel_List); | |
5690 alcDestroyContext(context); | |
5691 alcCloseDevice(dev); | |
5692 ALmixer_Initialized = 0; | |
5693 Number_of_Channels_global = 0; | |
5694 return -1; | |
5695 } | |
5696 | |
5697 /* Clear the error state */ | |
5698 alGetError(); | |
5699 /* Generate the OpenAL sources */ | |
5700 alGenSources(Number_of_Channels_global, source); | |
5701 if( (error=alGetError()) != AL_NO_ERROR) | |
5702 { | |
5703 ALmixer_SetError("Couldn't generate sources: %s\n", aluGetErrorString(error)); | |
5704 free(ALmixer_Channel_List); | |
5705 free(Source_Map_List); | |
5706 alcDestroyContext(context); | |
5707 alcCloseDevice(dev); | |
5708 ALmixer_Initialized = 0; | |
5709 Number_of_Channels_global = 0; | |
5710 return -1; | |
5711 } | |
5712 | |
5713 /* Initialize each channel and associate one source to one channel */ | |
5714 for(i=0; i<Number_of_Channels_global; i++) | |
5715 { | |
5716 if(0 == source[i]) | |
5717 { | |
5718 fprintf(stderr, "SDL_ALmixer serious problem. This OpenAL implementation allowed 0 to be a valid source id which is in conflict with assumptions made in this library.\n"); | |
5719 } | |
5720 | |
5721 Init_Channel(i); | |
5722 /* Keeping the source allocation out of the Init function | |
5723 * in case I want to reuse the Init | |
5724 * function for resetting data | |
5725 */ | |
5726 ALmixer_Channel_List[i].alsource = source[i]; | |
5727 /* Now also keep a copy of the source to channel mapping | |
5728 * in case we need to look up a channel from the source | |
5729 * instead of a source from a channel | |
5730 */ | |
5731 Source_Map_List[i].source = source[i]; | |
5732 Source_Map_List[i].channel = i; | |
5733 /* Clean the channel because there are some things that need to | |
5734 * be done that can't happen until the source is set | |
5735 */ | |
5736 Clean_Channel(i); | |
5737 } | |
5738 | |
5739 /* The Source_Map_List must be sorted by source for binary searches | |
5740 */ | |
5741 qsort(Source_Map_List, Number_of_Channels_global, sizeof(Source_Map), Compare_Source_Map); | |
5742 | |
5743 fprintf(stderr, "Sorted Source_Map_List is:\n"); | |
5744 for(i=0; i<Number_of_Channels_global; i++) | |
5745 { | |
5746 fprintf(stderr, "Source: %d, Channel: %d\n", Source_Map_List[i].source, Source_Map_List[i].channel); | |
5747 } | |
5748 fprintf(stderr, "\n"); | |
5749 | |
5750 simple_lock = SDL_CreateMutex(); | |
5751 if(NULL == simple_lock) | |
5752 { | |
5753 /* SDL sets the error message already? */ | |
5754 free(source); | |
5755 free(ALmixer_Channel_List); | |
5756 free(Source_Map_List); | |
5757 alcDestroyContext(context); | |
5758 alcCloseDevice(dev); | |
5759 ALmixer_Initialized = 0; | |
5760 Number_of_Channels_global = 0; | |
5761 return -1; | |
5762 } | |
5763 | |
5764 | |
5765 #ifdef ENABLE_ALMIXER_THREADS | |
5766 Stream_Thread_global = SDL_CreateThread(Stream_Data_Thread_Callback, NULL); | |
5767 if(NULL == Stream_Thread_global) | |
5768 { | |
5769 /* SDL sets the error message already? */ | |
5770 SDL_DestroyMutex(simple_lock); | |
5771 free(source); | |
5772 free(ALmixer_Channel_List); | |
5773 free(Source_Map_List); | |
5774 alcDestroyContext(context); | |
5775 alcCloseDevice(dev); | |
5776 ALmixer_Initialized = 0; | |
5777 Number_of_Channels_global = 0; | |
5778 return -1; | |
5779 } | |
5780 | |
5781 fprintf(stderr, "Using threads\n"); | |
5782 #endif /* End of ENABLE_ALMIXER_THREADS */ | |
5783 | |
5784 /* We don't need this array any more because all the sources | |
5785 * are connected to channels | |
5786 */ | |
5787 free(source); | |
5788 return 0; | |
5789 } | |
5790 | |
5791 | |
5792 Sint32 ALmixer_Init_Context(Uint32 frequency, Uint32 refresh) | |
5793 { | |
5794 ALCdevice* dev; | |
5795 ALCcontext* context; | |
5796 ALCenum error; | |
5797 | |
5798 #ifdef USING_LOKI_AL_DIST | |
5799 /* The Loki dist requires that I set both the | |
5800 * device and context frequency values separately | |
5801 */ | |
5802 /* Hope this won't overflow */ | |
5803 char device_string[256]; | |
5804 #endif | |
5805 | |
5806 /* (Venting frustration) Damn it! Nobody bothered | |
5807 * documenting how you're supposed to use an attribute | |
5808 * list. In fact, the not even the Loki test program | |
5809 * writers seem to know because they use it inconsistently. | |
5810 * For example, how do you terminate that attribute list? | |
5811 * The Loki test code does it 3 different ways. They | |
5812 * set the last value to 0, or they set it to ALC_INVALID, | |
5813 * or they set two final values: ALC_INVALID, 0 | |
5814 * In Loki, 0 and ALC_INVALID happen to be the same, | |
5815 * but with Creative Labs ALC_INVALID is -1. | |
5816 * So something's going to break. Loki's source | |
5817 * code says to terminate with ALC_INVALID. But I | |
5818 * don't know if that's really true, or it happens | |
5819 * to be a coinicidence because it's defined to 0. | |
5820 * Creative provides no source code, so I can't look at how | |
5821 * they terminate it. | |
5822 * So this is really, really ticking me off... | |
5823 * For now, I'm going to use ALC_INVALID. | |
5824 * (Update...after further review of the API spec, | |
5825 * it seems that a NULL terminated string is the correct | |
5826 * termination value to use, so 0 it is.) | |
5827 */ | |
5828 #if 0 | |
5829 ALint attrlist[] = { | |
5830 ALC_FREQUENCY, ALMIXER_DEFAULT_FREQUENCY, | |
5831 /* Don't know anything about these values. | |
5832 * Trust defaults? */ | |
5833 /* Supposed to be the refresh rate in Hz. | |
5834 * I think 15-120 are supposed to be good | |
5835 * values. Though I haven't gotten any effect except | |
5836 * for one strange instance on a Mac. But it was | |
5837 * unrepeatable. | |
5838 */ | |
5839 #if 0 | |
5840 ALC_REFRESH, 15, | |
5841 #endif | |
5842 /* Sync requires a alcProcessContext() call | |
5843 * for every cycle. By default, this is | |
5844 * not used and the value is AL_FALSE | |
5845 * because it will probably perform | |
5846 * pretty badly for me. | |
5847 */ | |
5848 #ifdef ENABLE_ALMIXER_ALC_SYNC | |
5849 ALC_SYNC, AL_TRUE, | |
5850 #else | |
5851 ALC_SYNC, AL_FALSE, | |
5852 #endif | |
5853 /* Looking at the API spec, it implies | |
5854 * that the list be a NULL terminated string | |
5855 * so it's probably not safe to use ALC_INVALID | |
5856 */ | |
5857 /* | |
5858 ALC_INVALID }; | |
5859 */ | |
5860 '\0'}; | |
5861 #endif | |
5862 /* Redo: I'm going to allow ALC_REFRESH to be set. | |
5863 * However, if no value is specified, I don't | |
5864 * want it in the list so I can get the OpenAL defaults | |
5865 */ | |
5866 ALint attrlist[7]; | |
5867 | |
5868 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
5869 /* More problems: I'm getting bit by endian/signedness issues on | |
5870 * different platforms. I can find the endianess easily enough, | |
5871 * but I don't know how to determine what the correct signedness | |
5872 * is (if such a thing exists). I do know that if I try using | |
5873 * unsigned on OSX with an originally signed sample, I get | |
5874 * distortion. However, I don't have any native unsigned samples | |
5875 * to test. But I'm assuming that the platform must be in the | |
5876 * correct signedness no matter what. | |
5877 * I can either assume everybody is signed, or I can try to | |
5878 * determine the value. If I try to determine the values, | |
5879 * I think my only ability to figure it out will be to open | |
5880 * SDL_Audio, and read what the obtained settings were. | |
5881 * Then shutdown everything. However, I don't even know how | |
5882 * reliable this is. | |
5883 * Update: I think I resolved the issues...forgot to update | |
5884 * these comments when it happened. I should check the revision control | |
5885 * log... Anyway, I think the issue was partly related to me not | |
5886 * doing something correctly with the AudioInfo or some kind | |
5887 * of stupid endian bug in my code, and weirdness ensued. Looking at the | |
5888 * revision control, I think I might have assumed that SDL_Sound would | |
5889 * do the right thing with a NULL AudioInfo, but I was incorrect, | |
5890 * and had to fill one out myself. | |
5891 */ | |
5892 SDL_AudioSpec desired; | |
5893 SDL_AudioSpec obtained; | |
5894 #endif | |
5895 | |
5896 | |
5897 | |
5898 | |
5899 /* Make sure ALmixer isn't already initialized */ | |
5900 if(ALmixer_Initialized) | |
5901 { | |
5902 return -1; | |
5903 } | |
5904 #ifdef USING_LOKI_AL_DIST | |
5905 fprintf(stderr, "Found Loki dist\n"); | |
5906 #elif defined(USING_CREATIVE_AL_DIST) | |
5907 fprintf(stderr, "Found Creative dist\n"); | |
5908 | |
5909 #elif defined(USING_NVIDIA_AL_DIST) | |
5910 fprintf(stderr, "Found Nvidia dist\n"); | |
5911 #endif | |
5912 | |
5913 /* Set the defaults */ | |
5914 attrlist[0] = ALC_FREQUENCY; | |
5915 attrlist[1] = ALMIXER_DEFAULT_FREQUENCY; | |
5916 attrlist[2] = ALC_SYNC; | |
5917 #ifdef ENABLE_ALMIXER_ALC_SYNC | |
5918 attrlist[3] = ALC_TRUE; | |
5919 #else | |
5920 attrlist[3] = ALC_FALSE; | |
5921 #endif | |
5922 | |
5923 /* Set frequency value if it is not 0 */ | |
5924 if(0 != frequency) | |
5925 { | |
5926 attrlist[1] = (ALint)frequency; | |
5927 } | |
5928 | |
5929 /* If the user specifies a refresh value, | |
5930 * make room for it | |
5931 */ | |
5932 if(0 != refresh) | |
5933 { | |
5934 attrlist[4] = (ALint)ALC_REFRESH; | |
5935 attrlist[5] = refresh; | |
5936 attrlist[6] = '\0'; | |
5937 } | |
5938 /* Terminate the list without any refresh values */ | |
5939 else | |
5940 { | |
5941 attrlist[4] = '\0'; | |
5942 } | |
5943 | |
5944 /* It looks like OpenAL won't let us ask it what | |
5945 * the set frequency is, so we need to save our | |
5946 * own copy. Yuck. | |
5947 * Update: J. Valenzuela just updated the Loki | |
5948 * dist (2003/01/02) to handle this. | |
5949 * The demo is in testattrib.c. However, this | |
5950 * looks kind of cumbersome to parse, and I've | |
5951 * already put this in my code, so I guess I'll | |
5952 * leave it for now. | |
5953 */ | |
5954 ALmixer_Frequency_global = attrlist[1]; | |
5955 | |
5956 /* Initialize SDL_Sound */ | |
5957 if(! Sound_Init() ) | |
5958 { | |
5959 ALmixer_SetError(Sound_GetError()); | |
5960 return -1; | |
5961 } | |
5962 #ifdef ENABLE_PARANOID_SIGNEDNESS_CHECK | |
5963 /* Here is the paranoid check that opens | |
5964 * SDL audio in an attempt to find the correct | |
5965 * system values. | |
5966 */ | |
5967 /* Doesn't have to be the actual value I think | |
5968 * (as long as it doesn't influence format, in | |
5969 * which case I'm probably screwed anyway because OpenAL | |
5970 * may easily choose to do something else). | |
5971 */ | |
5972 desired.freq = 44100; | |
5973 desired.channels = 2; | |
5974 desired.format = AUDIO_S16SYS; | |
5975 desired.callback = my_dummy_audio_callback; | |
5976 if(SDL_OpenAudio(&desired, &obtained) >= 0) | |
5977 { | |
5978 SIGN_TYPE_16BIT_FORMAT = obtained.format; | |
5979 /* Now to get really paranoid, we should probably | |
5980 * also assume that the 8bit format is also the | |
5981 * same sign type and set that value | |
5982 */ | |
5983 if(AUDIO_S16SYS == obtained.format) | |
5984 { | |
5985 SIGN_TYPE_8BIT_FORMAT = AUDIO_S8; | |
5986 } | |
5987 /* Should be AUDIO_U16SYS */ | |
5988 else | |
5989 { | |
5990 SIGN_TYPE_8BIT_FORMAT = AUDIO_U8; | |
5991 } | |
5992 SDL_CloseAudio(); | |
5993 fprintf(stderr, "Obtained format = %d", obtained.format); | |
5994 } | |
5995 else | |
5996 { | |
5997 /* Well, I guess I'm in trouble. I guess it's my best guess | |
5998 */ | |
5999 SIGN_TYPE_16_BIT_FORMAT = AUDIO_S16SYS; | |
6000 SIGN_TYPE_8_BIT_FORMAT = AUDIO_S8; | |
6001 } | |
6002 #endif | |
6003 /* Weirdness: It seems that SDL_Init(SDL_INIT_AUDIO) | |
6004 * causes OpenAL and SMPEG to conflict. For some reason | |
6005 * if SDL_Init on audio is active, then all the SMPEG | |
6006 * decoded sound comes out silent. Unfortunately, | |
6007 * Sound_Init() invokes SDL_Init on audio. I'm | |
6008 * not sure why it actually needs it... | |
6009 * But we'll attempt to disable it here after the | |
6010 * SDL_Sound::Init call and hope it doesn't break SDL_Sound. | |
6011 */ | |
6012 SDL_QuitSubSystem(SDL_INIT_AUDIO); | |
6013 | |
6014 /* I'm told NULL will call the default string | |
6015 * and hopefully do the right thing for each platform | |
6016 */ | |
6017 /* | |
6018 dev = alcOpenDevice( NULL ); | |
6019 */ | |
6020 /* Now I'm told I need to set both the device and context | |
6021 * to have the same sampling rate, so I must pass a string | |
6022 * to OpenDevice(). I don't know how portable these strings are. | |
6023 * I don't even know if the format for strings is | |
6024 * compatible | |
6025 * From the testattrib.c in the Loki test section | |
6026 * dev = alcOpenDevice( (const ALubyte *) "'((sampling-rate 22050))" ); | |
6027 */ | |
6028 | |
6029 #ifdef USING_LOKI_AL_DIST | |
6030 sprintf(device_string, "'((sampling-rate %d))", attrlist[1]); | |
6031 dev = alcOpenDevice( (const ALubyte *) device_string ); | |
6032 #else | |
6033 dev = alcOpenDevice( NULL ); | |
6034 #endif | |
6035 fprintf(stderr,"sampling-rate is %d\n", attrlist[1]); | |
6036 if(NULL == dev) | |
6037 { | |
6038 ALmixer_SetError("Cannot open sound device for OpenAL"); | |
6039 return -1; | |
6040 } | |
6041 | |
6042 context = alcCreateContext(dev, attrlist); | |
6043 if(NULL == context) | |
6044 { | |
6045 ALmixer_SetError("Cannot create a context OpenAL"); | |
6046 alcCloseDevice(dev); | |
6047 return -1; | |
6048 } | |
6049 | |
6050 | |
6051 /* Hmmm, OSX is returning 1 on alcMakeContextCurrent, | |
6052 * but ALC_NO_ERROR is defined to ALC_FALSE. | |
6053 * According to Garin Hiebert, this is actually an inconsistency | |
6054 * in the Loki version. The function should return a boolean. | |
6055 * instead of ALC_NO_ERROR. Garin suggested I check via | |
6056 * alcGetError(). | |
6057 */ | |
6058 /* clear the error */ | |
6059 alcGetError(dev); | |
6060 alcMakeContextCurrent(context); | |
6061 | |
6062 error = alcGetError(dev); | |
6063 if( (ALC_NO_ERROR != error) ) | |
6064 { | |
6065 ALmixer_SetError("Could not MakeContextCurrent"); | |
6066 alcDestroyContext(context); | |
6067 alcCloseDevice(dev); | |
6068 return -1; | |
6069 } | |
6070 | |
6071 | |
6072 #if 0 | |
6073 /* OSX is failing on alcMakeContextCurrent(). Try checking it first? */ | |
6074 if(alcGetCurrentContext() != context) | |
6075 { | |
6076 /* Hmmm, OSX is returning 1 on alcMakeContextCurrent, | |
6077 * but ALC_NO_ERROR is defined to ALC_FALSE. | |
6078 * I think this is a bug in the OpenAL implementation. | |
6079 */ | |
6080 fprintf(stderr,"alcMakeContextCurrent returns %d\n", alcMakeContextCurrent(context)); | |
6081 | |
6082 fprintf(stderr, "Making context current\n"); | |
6083 #ifndef __APPLE__ | |
6084 if(alcMakeContextCurrent(context) != ALC_NO_ERROR) | |
6085 #else | |
6086 if(!alcMakeContextCurrent(context)) | |
6087 #endif | |
6088 { | |
6089 ALmixer_SetError("Could not MakeContextCurrent"); | |
6090 alcDestroyContext(context); | |
6091 alcCloseDevice(dev); | |
6092 return -1; | |
6093 } | |
6094 | |
6095 } | |
6096 #endif | |
6097 | |
6098 fprintf(stderr, "done Context\n"); | |
6099 | |
6100 /* Saw this in the README with the OS X OpenAL distribution. | |
6101 * It looked interesting and simple, so I thought I might | |
6102 * try it out. | |
6103 * ***** ALC_CONVERT_DATA_UPON_LOADING | |
6104 * This extension allows the caller to tell OpenAL to preconvert to the native Core | |
6105 * Audio format, the audio data passed to the | |
6106 * library with the alBufferData() call. Preconverting the audio data, reduces CPU | |
6107 * usage by removing an audio data conversion | |
6108 * (per source) at render timem at the expense of a larger memory footprint. | |
6109 * | |
6110 * This feature is toggled on/off by using the alDisable() & alEnable() APIs. This | |
6111 * setting will be applied to all subsequent | |
6112 * calls to alBufferData(). | |
6113 */ | |
6114 #ifdef __APPLE__ | |
6115 alEnable(ALC_CONVERT_DATA_UPON_LOADING); | |
6116 #endif | |
6117 | |
6118 return 0; | |
6119 } | |
6120 | |
6121 | |
6122 Sint32 ALmixer_Init_Mixer(Sint32 num_sources) | |
6123 { | |
6124 Sint32 i; | |
6125 ALenum error; | |
6126 ALuint* source; | |
6127 | |
6128 | |
6129 ALmixer_Initialized = 1; | |
6130 | |
6131 if(num_sources <= 0) | |
6132 { | |
6133 Number_of_Channels_global = ALMIXER_DEFAULT_NUM_CHANNELS; | |
6134 } | |
6135 else | |
6136 { | |
6137 Number_of_Channels_global = num_sources; | |
6138 } | |
6139 Number_of_Reserve_Channels_global = 0; | |
6140 Is_Playing_global = 0; | |
6141 /* Set to Null in case system quit and was reinitialized */ | |
6142 Channel_Done_Callback = NULL; | |
6143 Channel_Done_Callback_Userdata = NULL; | |
6144 Channel_Data_Callback = NULL; | |
6145 | |
6146 /* Allocate memory for the list of channels */ | |
6147 ALmixer_Channel_List = (struct ALmixer_Channel*) malloc(Number_of_Channels_global * sizeof(struct ALmixer_Channel)); | |
6148 if(NULL == ALmixer_Channel_List) | |
6149 { | |
6150 ALmixer_SetError("Out of Memory for Channel List"); | |
6151 ALmixer_Initialized = 0; | |
6152 Number_of_Channels_global = 0; | |
6153 return -1; | |
6154 } | |
6155 | |
6156 /* Allocate memory for the list of sources that map to the channels */ | |
6157 Source_Map_List = (Source_Map*) malloc(Number_of_Channels_global * sizeof(Source_Map)); | |
6158 if(NULL == Source_Map_List) | |
6159 { | |
6160 ALmixer_SetError("Out of Memory for Source Map List"); | |
6161 free(ALmixer_Channel_List); | |
6162 ALmixer_Initialized = 0; | |
6163 Number_of_Channels_global = 0; | |
6164 return -1; | |
6165 } | |
6166 | |
6167 /* Create array that will hold the sources */ | |
6168 source = (ALuint*)malloc(Number_of_Channels_global * sizeof(ALuint)); | |
6169 if(NULL == source) | |
6170 { | |
6171 ALmixer_SetError("Out of Memory for sources"); | |
6172 free(Source_Map_List); | |
6173 free(ALmixer_Channel_List); | |
6174 ALmixer_Initialized = 0; | |
6175 Number_of_Channels_global = 0; | |
6176 return -1; | |
6177 } | |
6178 | |
6179 /* Clear the error state */ | |
6180 alGetError(); | |
6181 /* Generate the OpenAL sources */ | |
6182 alGenSources(Number_of_Channels_global, source); | |
6183 if( (error=alGetError()) != AL_NO_ERROR) | |
6184 { | |
6185 ALmixer_SetError("Couldn't generate sources: %s\n", aluGetErrorString(error)); | |
6186 free(ALmixer_Channel_List); | |
6187 free(Source_Map_List); | |
6188 ALmixer_Initialized = 0; | |
6189 Number_of_Channels_global = 0; | |
6190 return -1; | |
6191 } | |
6192 | |
6193 /* Initialize each channel and associate one source to one channel */ | |
6194 for(i=0; i<Number_of_Channels_global; i++) | |
6195 { | |
6196 Init_Channel(i); | |
6197 /* Keeping the source allocation out of the Init function | |
6198 * in case I want to reuse the Init | |
6199 * function for resetting data | |
6200 */ | |
6201 ALmixer_Channel_List[i].alsource = source[i]; | |
6202 /* Now also keep a copy of the source to channel mapping | |
6203 * in case we need to look up a channel from the source | |
6204 * instead of a source from a channel | |
6205 */ | |
6206 Source_Map_List[i].source = source[i]; | |
6207 Source_Map_List[i].channel = i; | |
6208 /* Clean the channel because there are some things that need to | |
6209 * be done that can't happen until the source is set | |
6210 */ | |
6211 Clean_Channel(i); | |
6212 } | |
6213 | |
6214 /* The Source_Map_List must be sorted by source for binary searches | |
6215 */ | |
6216 qsort(Source_Map_List, Number_of_Channels_global, sizeof(Source_Map), Compare_Source_Map); | |
6217 | |
6218 fprintf(stderr, "Sorted Source_Map_List is:\n"); | |
6219 for(i=0; i<Number_of_Channels_global; i++) | |
6220 { | |
6221 fprintf(stderr, "Source: %d, Channel: %d\n", Source_Map_List[i].source, Source_Map_List[i].channel); | |
6222 } | |
6223 fprintf(stderr, "\n"); | |
6224 | |
6225 simple_lock = SDL_CreateMutex(); | |
6226 if(NULL == simple_lock) | |
6227 { | |
6228 /* SDL sets the error message already? */ | |
6229 free(source); | |
6230 free(ALmixer_Channel_List); | |
6231 free(Source_Map_List); | |
6232 ALmixer_Initialized = 0; | |
6233 Number_of_Channels_global = 0; | |
6234 return -1; | |
6235 } | |
6236 | |
6237 | |
6238 #ifdef ENABLE_ALMIXER_THREADS | |
6239 Stream_Thread_global = SDL_CreateThread(Stream_Data_Thread_Callback, NULL); | |
6240 if(NULL == Stream_Thread_global) | |
6241 { | |
6242 /* SDL sets the error message already? */ | |
6243 SDL_DestroyMutex(simple_lock); | |
6244 free(source); | |
6245 free(ALmixer_Channel_List); | |
6246 free(Source_Map_List); | |
6247 ALmixer_Initialized = 0; | |
6248 Number_of_Channels_global = 0; | |
6249 return -1; | |
6250 } | |
6251 | |
6252 fprintf(stderr, "Using threads\n"); | |
6253 #endif /* End of ENABLE_ALMIXER_THREADS */ | |
6254 | |
6255 /* We don't need this array any more because all the sources | |
6256 * are connected to channels | |
6257 */ | |
6258 free(source); | |
6259 return 0; | |
6260 } | |
6261 | |
6262 | |
6263 | |
6264 /* Keep the return value void to allow easy use with | |
6265 * atexit() | |
6266 */ | |
6267 void ALmixer_Quit() | |
6268 { | |
6269 ALCcontext* context; | |
6270 ALCdevice* dev; | |
6271 Sint32 i; | |
6272 | |
6273 if( ! ALmixer_Initialized) | |
6274 { | |
6275 return; | |
6276 } | |
6277 | |
6278 SDL_LockMutex(simple_lock); | |
6279 | |
6280 /* Shutdown everything before closing context */ | |
6281 fprintf(stderr, "Halting channels\n"); | |
6282 Internal_HaltChannel(-1); | |
6283 | |
6284 /* This flag will cause the thread to terminate */ | |
6285 ALmixer_Initialized = 0; | |
6286 SDL_UnlockMutex(simple_lock); | |
6287 #ifdef ENABLE_ALMIXER_THREADS | |
6288 fprintf(stderr, "Closing thread\n"); | |
6289 SDL_WaitThread(Stream_Thread_global, NULL); | |
6290 #endif | |
6291 | |
6292 fprintf(stderr, "Destroying mutex\n"); | |
6293 SDL_DestroyMutex(simple_lock); | |
6294 | |
6295 fprintf(stderr, "Deleting OpenAL sources\n"); | |
6296 /* Delete all the OpenAL sources */ | |
6297 for(i=0; i<Number_of_Channels_global; i++) | |
6298 { | |
6299 fprintf(stderr, "Deleting OpenAL source: %d\n", ALmixer_Channel_List[i].alsource); | |
6300 alDeleteSources(1, &ALmixer_Channel_List[i].alsource); | |
6301 } | |
6302 /* Delete all the channels */ | |
6303 free(ALmixer_Channel_List); | |
6304 free(Source_Map_List); | |
6305 | |
6306 /* Reset the Number_of_Channels just in case somebody | |
6307 * tries using a ALmixer function. | |
6308 * I probably should put "Initialized" checks everywhere, | |
6309 * but I'm too lazy at the moment. | |
6310 */ | |
6311 Number_of_Channels_global = 0; | |
6312 | |
6313 context = alcGetCurrentContext(); | |
6314 if(NULL == context) | |
6315 { | |
6316 return; | |
6317 } | |
6318 /* Need to get the device before I close the context */ | |
6319 dev = alcGetContextsDevice(context); | |
6320 alcDestroyContext(context); | |
6321 | |
6322 if(NULL == dev) | |
6323 { | |
6324 return; | |
6325 } | |
6326 alcCloseDevice(dev); | |
6327 | |
6328 Sound_Quit(); | |
6329 | |
6330 return; | |
6331 } | |
6332 | |
6333 Uint8 ALmixer_IsInitialized() | |
6334 { | |
6335 return ALmixer_Initialized; | |
6336 } | |
6337 | |
6338 Uint32 ALmixer_GetFrequency() | |
6339 { | |
6340 return ALmixer_Frequency_global; | |
6341 } | |
6342 | |
6343 const SDL_version* ALmixer_Linked_Version() | |
6344 { | |
6345 static SDL_version linked_mixver; | |
6346 ALMIXER_VERSION(&linked_mixver); | |
6347 return(&linked_mixver); | |
6348 } | |
6349 | |
6350 | |
6351 | |
6352 | |
6353 | |
6354 #if 0 | |
6355 void ALmixer_Output_Attributes() | |
6356 { | |
6357 ALint num_flags = 0; | |
6358 ALint* flags = 0; | |
6359 int i; | |
6360 ALCdevice* dev = alcGetContextsDevice( alcGetCurrentContext() ); | |
6361 | |
6362 | |
6363 printf("custom context\n"); | |
6364 | |
6365 alcGetIntegerv(dev, ALC_ATTRIBUTES_SIZE, | |
6366 sizeof num_flags, &num_flags ); | |
6367 | |
6368 printf("Number of Flags: %d\n", num_flags); | |
6369 | |
6370 if(num_flags) | |
6371 { | |
6372 flags = malloc(sizeof(num_flags) * sizeof(ALint)); | |
6373 | |
6374 alcGetIntegerv(dev, ALC_ALL_ATTRIBUTES, | |
6375 sizeof num_flags * sizeof(ALint), | |
6376 flags ); | |
6377 } | |
6378 for(i = 0; i < num_flags-1; i += 2) | |
6379 { | |
6380 printf("key 0x%x : value %d\n", | |
6381 flags[i], flags[i+1]); | |
6382 } | |
6383 free(flags); | |
6384 } | |
6385 #endif | |
6386 | |
6387 | |
6388 void ALmixer_Output_Decoders() | |
6389 { | |
6390 Sound_Version sound_compile_version; | |
6391 Sound_Version sound_link_version; | |
6392 | |
6393 const Sound_DecoderInfo **rc = Sound_AvailableDecoders(); | |
6394 const Sound_DecoderInfo **i; | |
6395 const char **ext; | |
6396 FILE* stream = stdout; | |
6397 | |
6398 | |
6399 fprintf(stream, "SDL_sound Information:\n"); | |
6400 | |
6401 SOUND_VERSION(&sound_compile_version); | |
6402 fprintf(stream, "\tCompiled with SDL_sound version: %d.%d.%d\n", | |
6403 sound_compile_version.major, | |
6404 sound_compile_version.minor, | |
6405 sound_compile_version.patch); | |
6406 | |
6407 Sound_GetLinkedVersion(&sound_link_version); | |
6408 fprintf(stream, "\tRunning (linked) with SDL_sound version: %d.%d.%d\n", | |
6409 sound_link_version.major, | |
6410 sound_link_version.minor, | |
6411 sound_link_version.patch); | |
6412 | |
6413 fprintf(stream, "Supported sound formats:\n"); | |
6414 if (rc == NULL) | |
6415 fprintf(stream, " * Apparently, NONE!\n"); | |
6416 else | |
6417 { | |
6418 for (i = rc; *i != NULL; i++) | |
6419 { | |
6420 fprintf(stream, " * %s\n", (*i)->description); | |
6421 | |
6422 for (ext = (*i)->extensions; *ext != NULL; ext++) | |
6423 fprintf(stream, " File extension \"%s\"\n", *ext); | |
6424 | |
6425 fprintf(stream, " Written by %s.\n %s\n\n", | |
6426 (*i)->author, (*i)->url); | |
6427 } /* for */ | |
6428 } /* else */ | |
6429 | |
6430 fprintf(stream, "\n"); | |
6431 } | |
6432 | |
6433 void ALmixer_Output_OpenAL_Info() | |
6434 { | |
6435 SDL_version mixer_compile_version; | |
6436 const SDL_version * mixer_link_version=ALmixer_Linked_Version(); | |
6437 FILE* stream = stdout; | |
6438 | |
6439 fprintf(stream, "OpenAL Information:\n"); | |
6440 fprintf(stream, "\tAL_VENDOR: %s\n", alGetString( AL_VENDOR ) ); | |
6441 fprintf(stream, "\tAL_VERSION: %s\n", alGetString( AL_VERSION ) ); | |
6442 fprintf(stream, "\tAL_RENDERER: %s\n", alGetString( AL_RENDERER ) ); | |
6443 fprintf(stream, "\tAL_EXTENSIONS: %s\n", alGetString( AL_EXTENSIONS ) ); | |
6444 | |
6445 ALMIXER_VERSION(&mixer_compile_version); | |
6446 fprintf(stream, "\nSDL_ALmixer Information:\n"); | |
6447 fprintf(stream, "\tCompiled with SDL_ALmixer version: %d.%d.%d\n", | |
6448 mixer_compile_version.major, | |
6449 mixer_compile_version.minor, | |
6450 mixer_compile_version.patch); | |
6451 | |
6452 fprintf(stream, "\tRunning (linked) with SDL_ALmixer version: %d.%d.%d\n", | |
6453 mixer_link_version->major, | |
6454 mixer_link_version->minor, | |
6455 mixer_link_version->patch); | |
6456 | |
6457 fprintf(stream, "\tCompile flags: "); | |
6458 #ifdef ENABLE_LOKI_QUEUE_FIX_HACK | |
6459 fprintf(stream, "ENABLE_LOKI_QUEUE_FIX_HACK "); | |
6460 #endif | |
6461 #ifdef ENABLE_ALMIXER_THREADS | |
6462 fprintf(stream, "ENABLE_ALMIXER_THREADS "); | |
6463 #endif | |
6464 #ifdef ENABLE_ALC_SYNC | |
6465 fprintf(stream, "ENABLE_ALC_SYNC "); | |
6466 #endif | |
6467 fprintf(stream, "\n"); | |
6468 } | |
6469 | |
6470 | |
6471 Sint32 ALmixer_AllocateChannels(Sint32 numchans) | |
6472 { | |
6473 Sint32 retval; | |
6474 SDL_LockMutex(simple_lock); | |
6475 retval = Internal_AllocateChannels(numchans); | |
6476 SDL_UnlockMutex(simple_lock); | |
6477 return retval; | |
6478 } | |
6479 | |
6480 | |
6481 Sint32 ALmixer_ReserveChannels(Sint32 num) | |
6482 { | |
6483 Sint32 retval; | |
6484 SDL_LockMutex(simple_lock); | |
6485 retval = Internal_ReserveChannels(num); | |
6486 SDL_UnlockMutex(simple_lock); | |
6487 return retval; | |
6488 } | |
6489 | |
6490 | |
6491 | |
6492 | |
6493 static ALmixer_Data* DoLoad(Sound_Sample* sample, Uint32 buffersize, Uint8 decode_mode, Uint32 max_queue_buffers, Uint32 num_startup_buffers, Uint8 access_data) | |
6494 { | |
6495 Uint32 bytes_decoded; | |
6496 ALmixer_Data* ret_data; | |
6497 ALenum error; | |
6498 | |
6499 /* Allocate memory */ | |
6500 ret_data = (ALmixer_Data *)malloc(sizeof(ALmixer_Data)); | |
6501 if (NULL == ret_data) | |
6502 { | |
6503 ALmixer_SetError("Out of memory"); | |
6504 return(NULL); | |
6505 } | |
6506 | |
6507 /* Initialize the data fields */ | |
6508 | |
6509 /* Set the Sound_Sample pointer */ | |
6510 ret_data->sample = sample; | |
6511 | |
6512 /* Flag the data to note that it is not in use */ | |
6513 ret_data->in_use = 0; | |
6514 | |
6515 /* Initialize remaining flags */ | |
6516 ret_data->total_time = -1; | |
6517 ret_data->eof = 0; | |
6518 | |
6519 /* Just initialize */ | |
6520 ret_data->num_buffers_in_use = 0; | |
6521 | |
6522 /* Just initialize */ | |
6523 ret_data->total_bytes = 0; | |
6524 | |
6525 /* Just initialize */ | |
6526 ret_data->loaded_bytes = 0; | |
6527 | |
6528 /* Set the max queue buffers (minimum must be 2) */ | |
6529 if(max_queue_buffers < 2) | |
6530 { | |
6531 max_queue_buffers = ALMIXER_DEFAULT_QUEUE_BUFFERS; | |
6532 } | |
6533 ret_data->max_queue_buffers = max_queue_buffers; | |
6534 /* Set up the start up buffers */ | |
6535 if(0 == num_startup_buffers) | |
6536 { | |
6537 num_startup_buffers = ALMIXER_DEFAULT_STARTUP_BUFFERS; | |
6538 } | |
6539 /* Make sure start up buffers is less or equal to max_queue_buffers */ | |
6540 if(num_startup_buffers > max_queue_buffers) | |
6541 { | |
6542 num_startup_buffers = max_queue_buffers; | |
6543 } | |
6544 ret_data->num_startup_buffers = num_startup_buffers; | |
6545 | |
6546 ret_data->buffer_map_list = NULL; | |
6547 ret_data->current_buffer = 0; | |
6548 | |
6549 ret_data->circular_buffer_queue = NULL; | |
6550 | |
6551 /* Now decode and load the data into a data chunk */ | |
6552 /* Different cases for Streamed and Predecoded | |
6553 * Streamed might turn into a predecoded if buffersize | |
6554 * is large enough */ | |
6555 if(ALMIXER_DECODE_STREAM == decode_mode) | |
6556 { | |
6557 bytes_decoded = Sound_Decode(sample); | |
6558 if(sample->flags & SOUND_SAMPLEFLAG_ERROR) | |
6559 { | |
6560 ALmixer_SetError(Sound_GetError()); | |
6561 Sound_FreeSample(sample); | |
6562 free(ret_data); | |
6563 return NULL; | |
6564 } | |
6565 | |
6566 /* If no data, return an error */ | |
6567 if(0 == bytes_decoded) | |
6568 { | |
6569 ALmixer_SetError("File has no data"); | |
6570 Sound_FreeSample(sample); | |
6571 free(ret_data); | |
6572 return NULL; | |
6573 } | |
6574 | |
6575 /* Note, currently, my Ogg conservative modifications | |
6576 * prevent EOF from being detected in the first read | |
6577 * because of the weird packet behavior of ov_read(). | |
6578 * The EAGAIN will get set, but not the EOF. | |
6579 * I don't know the best way to handle this, | |
6580 * so for now, Ogg's can only be explicitly | |
6581 * predecoded. | |
6582 */ | |
6583 | |
6584 /* Correction: Since we no longer actually keep the | |
6585 * streamed data we read here (we rewind and throw | |
6586 * it away, and start over on Play), it is | |
6587 * safe to read another chunk to see if we've hit EOF | |
6588 */ | |
6589 if(sample->flags & SOUND_SAMPLEFLAG_EAGAIN) | |
6590 { | |
6591 bytes_decoded = Sound_Decode(sample); | |
6592 if(sample->flags & SOUND_SAMPLEFLAG_ERROR) | |
6593 { | |
6594 ALmixer_SetError(Sound_GetError()); | |
6595 Sound_FreeSample(sample); | |
6596 free(ret_data); | |
6597 return NULL; | |
6598 } | |
6599 } | |
6600 | |
6601 | |
6602 /* If we found an EOF, the entire file was | |
6603 * decoded, so we can treat it like one. | |
6604 */ | |
6605 | |
6606 if(sample->flags & SOUND_SAMPLEFLAG_EOF) | |
6607 { | |
6608 fprintf(stderr, "We got LUCKY! File is predecoded even though STREAM was requested\n"); | |
6609 | |
6610 ret_data->decoded_all = 1; | |
6611 /* Need to keep this information around for | |
6612 * seek and rewind abilities. | |
6613 */ | |
6614 ret_data->total_bytes = bytes_decoded; | |
6615 /* For now, the loaded bytes is the same as total bytes, but | |
6616 * this could change during a seek operation | |
6617 */ | |
6618 ret_data->loaded_bytes = bytes_decoded; | |
6619 | |
6620 /* Let's compute the total playing time | |
6621 * SDL_sound does not yet provide this (we're working on | |
6622 * that at the moment...) | |
6623 */ | |
6624 ret_data->total_time = Compute_Total_Time(&sample->desired, bytes_decoded); | |
6625 | |
6626 /* Create one element in the buffer array for data for OpanAL */ | |
6627 ret_data->buffer = (ALuint*)malloc( sizeof(ALuint) ); | |
6628 if(NULL == ret_data->buffer) | |
6629 { | |
6630 ALmixer_SetError("Out of Memory"); | |
6631 Sound_FreeSample(sample); | |
6632 free(ret_data); | |
6633 return NULL; | |
6634 } | |
6635 /* Clear the error code */ | |
6636 alGetError(); | |
6637 /* Now generate an OpenAL buffer using that first element */ | |
6638 alGenBuffers(1, ret_data->buffer); | |
6639 if( (error = alGetError()) != AL_NO_ERROR) | |
6640 { | |
6641 ALmixer_SetError("alGenBuffers failed: %s\n", aluGetErrorString(error)); | |
6642 Sound_FreeSample(sample); | |
6643 free(ret_data->buffer); | |
6644 free(ret_data); | |
6645 return NULL; | |
6646 } | |
6647 | |
6648 | |
6649 /* Now copy the data to the OpenAL buffer */ | |
6650 /* We can't just set a pointer because the API needs | |
6651 * its own copy to assist hardware acceleration */ | |
6652 alBufferData(ret_data->buffer[0], | |
6653 TranslateFormat(&sample->desired), | |
6654 sample->buffer, | |
6655 bytes_decoded, | |
6656 sample->desired.rate | |
6657 ); | |
6658 if( (error = alGetError()) != AL_NO_ERROR) | |
6659 { | |
6660 ALmixer_SetError("alBufferData failed: %s\n", aluGetErrorString(error)); | |
6661 Sound_FreeSample(sample); | |
6662 alDeleteBuffers(1, ret_data->buffer); | |
6663 free(ret_data->buffer); | |
6664 free(ret_data); | |
6665 return NULL; | |
6666 } | |
6667 | |
6668 /* We should be done with the sample since it's all | |
6669 * predecoded. So we can free the memory */ | |
6670 | |
6671 /* Additional notes: | |
6672 * We need to keep data around in case Seek() is needed | |
6673 * or other Sound_AudioInfo is needed. | |
6674 * This can either be done by not deleting the sample, | |
6675 * or it can be done by dynamically recreating it | |
6676 * when we need it. | |
6677 */ | |
6678 /* Since OpenAL won't let us retrieve it | |
6679 * (aka dynamically), we have to keep the Sample | |
6680 * around because since the user requested | |
6681 * streamed and we offered predecoded, | |
6682 * we don't want to mess up the user who | |
6683 * was expecting seek support | |
6684 * So Don't Do anything | |
6685 */ | |
6686 /* | |
6687 if(0 == access_data) | |
6688 { | |
6689 Sound_FreeSample(sample); | |
6690 ret_data->sample = NULL; | |
6691 } | |
6692 */ | |
6693 /* Else, We keep a copy of the sample around. | |
6694 * so don't do anything. | |
6695 */ | |
6696 | |
6697 #if 0 | |
6698 #if defined(DISABLE_PREDECODED_SEEK) | |
6699 Sound_FreeSample(sample); | |
6700 ret_data->sample = NULL; | |
6701 #elif !defined(DISABLE_SEEK_MEMORY_OPTIMIZATION) | |
6702 Sound_FreeSample(sample); | |
6703 ret_data->sample = NULL; | |
6704 #else | |
6705 /* We keep a copy of the sample around. | |
6706 * so don't do anything. | |
6707 */ | |
6708 #endif | |
6709 #endif | |
6710 /* okay we're done here */ | |
6711 | |
6712 } | |
6713 /* Else, we need to stream the data, so we'll | |
6714 * create multple buffers for queuing */ | |
6715 else | |
6716 { | |
6717 fprintf(stderr, "Loading streamed data (not lucky)\n"); | |
6718 ret_data->decoded_all = 0; | |
6719 | |
6720 /* This information is for predecoded. | |
6721 * Set to 0, since we don't know. | |
6722 */ | |
6723 ret_data->total_bytes = 0; | |
6724 | |
6725 /* Create buffers for data | |
6726 */ | |
6727 ret_data->buffer = (ALuint*)malloc( sizeof(ALuint) * max_queue_buffers); | |
6728 if(NULL == ret_data->buffer) | |
6729 { | |
6730 ALmixer_SetError("Out of Memory"); | |
6731 Sound_FreeSample(sample); | |
6732 free(ret_data); | |
6733 return NULL; | |
6734 } | |
6735 | |
6736 /* Clear the error code */ | |
6737 alGetError(); | |
6738 /* Now generate an OpenAL buffer using that first element */ | |
6739 alGenBuffers(max_queue_buffers, ret_data->buffer); | |
6740 if( (error = alGetError()) != AL_NO_ERROR) | |
6741 { | |
6742 ALmixer_SetError("alGenBuffers failed: %s\n", aluGetErrorString(error)); | |
6743 Sound_FreeSample(sample); | |
6744 free(ret_data->buffer); | |
6745 free(ret_data); | |
6746 return NULL; | |
6747 } | |
6748 | |
6749 /* Redesign: Okay, because of the unqueuing problems and such, | |
6750 * I've decided to redesign where and how queuing is handled. | |
6751 * Before, everything was queued up here. However, this | |
6752 * placed a penalty on load and made performance inconsistent | |
6753 * when samples had to be rewound. It did make things easier | |
6754 * to queue because I could let OpenAL decide which buffer | |
6755 * needed to be queued next. | |
6756 * Now, I'm going to push off the queuing to the actual | |
6757 * Play() command. I'm going to add some book keeping, | |
6758 * and allow for additional buffers to be filled at later | |
6759 * times. | |
6760 */ | |
6761 | |
6762 | |
6763 /* So first of all, because of I already decoded the sample | |
6764 * for testing, I need to decide what to do with it. | |
6765 * The best thing would be be to alBufferData() it. | |
6766 * The problem is it may conflict with the rest of | |
6767 * the system because everything now assumes buffers | |
6768 * are entirely stripped (because of the unqueing | |
6769 * problem). | |
6770 * So it looks like I have to do the crappy thing | |
6771 * and throw away the data, and rewind. | |
6772 */ | |
6773 | |
6774 if(0 == Sound_Rewind(ret_data->sample)) | |
6775 { | |
6776 ALmixer_SetError("Cannot use sample for streamed data because it must be rewindable: %s", Sound_GetError() ); | |
6777 Sound_FreeSample(sample); | |
6778 free(ret_data->buffer); | |
6779 free(ret_data); | |
6780 return NULL; | |
6781 } | |
6782 | |
6783 | |
6784 /* If the user has selected access_data, we need to | |
6785 * keep copies of the queuing buffers around because | |
6786 * OpenAL won't let us access the data. | |
6787 * Allocate the memory for the buffers here | |
6788 * and initialize the albuffer-index map | |
6789 */ | |
6790 if(access_data) | |
6791 { | |
6792 Uint32 j; | |
6793 /* Create buffers for data access | |
6794 * Should be the same number as the number of queue buffers | |
6795 */ | |
6796 ret_data->buffer_map_list = (Buffer_Map*)malloc( sizeof(Buffer_Map) * max_queue_buffers); | |
6797 if(NULL == ret_data->buffer_map_list) | |
6798 { | |
6799 ALmixer_SetError("Out of Memory"); | |
6800 Sound_FreeSample(sample); | |
6801 free(ret_data->buffer); | |
6802 free(ret_data); | |
6803 return NULL; | |
6804 } | |
6805 | |
6806 ret_data->circular_buffer_queue = CircularQueueUnsignedInt_CreateQueue(max_queue_buffers); | |
6807 if(NULL == ret_data->circular_buffer_queue) | |
6808 { | |
6809 ALmixer_SetError("Out of Memory"); | |
6810 free(ret_data->buffer_map_list); | |
6811 Sound_FreeSample(sample); | |
6812 free(ret_data->buffer); | |
6813 free(ret_data); | |
6814 return NULL; | |
6815 } | |
6816 | |
6817 | |
6818 for(j=0; j<max_queue_buffers; j++) | |
6819 { | |
6820 ret_data->buffer_map_list[j].albuffer = ret_data->buffer[j]; | |
6821 ret_data->buffer_map_list[j].index = j; | |
6822 ret_data->buffer_map_list[j].num_bytes = 0; | |
6823 ret_data->buffer_map_list[j].data = (Uint8*)malloc( sizeof(Uint8) * buffersize); | |
6824 if(NULL == ret_data->buffer_map_list[j].data) | |
6825 { | |
6826 ALmixer_SetError("Out of Memory"); | |
6827 break; | |
6828 } | |
6829 } | |
6830 /* If an error happened, we have to clean up the memory */ | |
6831 if(j < max_queue_buffers) | |
6832 { | |
6833 fprintf(stderr, "################## Buffer allocation failed\n"); | |
6834 for( ; j>=0; j--) | |
6835 { | |
6836 free(ret_data->buffer_map_list[j].data); | |
6837 } | |
6838 free(ret_data->buffer_map_list); | |
6839 CircularQueueUnsignedInt_FreeQueue(ret_data->circular_buffer_queue); | |
6840 Sound_FreeSample(sample); | |
6841 free(ret_data->buffer); | |
6842 free(ret_data); | |
6843 return NULL; | |
6844 } | |
6845 | |
6846 /* The Buffer_Map_List must be sorted by albuffer for binary searches | |
6847 */ | |
6848 qsort(ret_data->buffer_map_list, max_queue_buffers, sizeof(Buffer_Map), Compare_Buffer_Map); | |
6849 } /* End if access_data==true */ | |
6850 | |
6851 | |
6852 } /* End of do stream */ | |
6853 } /* end of DECODE_STREAM */ | |
6854 /* User requested decode all (easy, nothing to figure out) */ | |
6855 else if(ALMIXER_DECODE_ALL == decode_mode) | |
6856 { | |
6857 bytes_decoded = Sound_DecodeAll(sample); | |
6858 if(sample->flags & SOUND_SAMPLEFLAG_ERROR) | |
6859 { | |
6860 ALmixer_SetError(Sound_GetError()); | |
6861 Sound_FreeSample(sample); | |
6862 free(ret_data); | |
6863 return NULL; | |
6864 } | |
6865 | |
6866 /* If no data, return an error */ | |
6867 if(0 == bytes_decoded) | |
6868 { | |
6869 ALmixer_SetError("File has no data"); | |
6870 Sound_FreeSample(sample); | |
6871 free(ret_data); | |
6872 return NULL; | |
6873 } | |
6874 | |
6875 | |
6876 ret_data->decoded_all = 1; | |
6877 /* Need to keep this information around for | |
6878 * seek and rewind abilities. | |
6879 */ | |
6880 ret_data->total_bytes = bytes_decoded; | |
6881 /* For now, the loaded bytes is the same as total bytes, but | |
6882 * this could change during a seek operation | |
6883 */ | |
6884 ret_data->loaded_bytes = bytes_decoded; | |
6885 | |
6886 /* Let's compute the total playing time | |
6887 * SDL_sound does not yet provide this (we're working on | |
6888 * that at the moment...) | |
6889 */ | |
6890 ret_data->total_time = Compute_Total_Time(&sample->desired, bytes_decoded); | |
6891 | |
6892 /* Create one element in the buffer array for data for OpanAL */ | |
6893 ret_data->buffer = (ALuint*)malloc( sizeof(ALuint) ); | |
6894 if(NULL == ret_data->buffer) | |
6895 { | |
6896 ALmixer_SetError("Out of Memory"); | |
6897 Sound_FreeSample(sample); | |
6898 free(ret_data); | |
6899 return NULL; | |
6900 } | |
6901 /* Clear the error code */ | |
6902 alGetError(); | |
6903 /* Now generate an OpenAL buffer using that first element */ | |
6904 alGenBuffers(1, ret_data->buffer); | |
6905 if( (error = alGetError()) != AL_NO_ERROR) | |
6906 { | |
6907 ALmixer_SetError("alGenBuffers failed: %s\n", aluGetErrorString(error)); | |
6908 Sound_FreeSample(sample); | |
6909 free(ret_data->buffer); | |
6910 free(ret_data); | |
6911 return NULL; | |
6912 } | |
6913 fprintf(stderr, "Actual rate=%d, desired=%d\n", sample->actual.rate, sample->desired.rate); | |
6914 | |
6915 /* Now copy the data to the OpenAL buffer */ | |
6916 /* We can't just set a pointer because the API needs | |
6917 * its own copy to assist hardware acceleration */ | |
6918 alBufferData(ret_data->buffer[0], | |
6919 TranslateFormat(&sample->desired), | |
6920 sample->buffer, | |
6921 bytes_decoded, | |
6922 sample->desired.rate | |
6923 ); | |
6924 if( (error = alGetError()) != AL_NO_ERROR) | |
6925 { | |
6926 ALmixer_SetError("alBufferData failed: %s\n", aluGetErrorString(error)); | |
6927 Sound_FreeSample(sample); | |
6928 alDeleteBuffers(1, ret_data->buffer); | |
6929 free(ret_data->buffer); | |
6930 free(ret_data); | |
6931 return NULL; | |
6932 } | |
6933 | |
6934 /* We should be done with the sample since it's all | |
6935 * predecoded. So we can free the memory */ | |
6936 /* Need to keep around because Seek() needs it */ | |
6937 | |
6938 /* Additional notes: | |
6939 * We need to keep data around in case Seek() is needed | |
6940 * or other Sound_AudioInfo is needed. | |
6941 * This can either be done by not deleting the sample, | |
6942 * or it can be done by dynamically recreating it | |
6943 * when we need it. | |
6944 * Update: I think now it's up to the user by passing the | |
6945 * access_data flag. If they set the flag, then they get | |
6946 * data callbacks and seek support. If not, then they can | |
6947 * get all that stuff at the expense of keeping extra memory | |
6948 * around. | |
6949 */ | |
6950 if(0 == access_data) | |
6951 { | |
6952 Sound_FreeSample(sample); | |
6953 ret_data->sample = NULL; | |
6954 } | |
6955 | |
6956 /* Else, We keep a copy of the sample around. | |
6957 * so don't do anything. | |
6958 */ | |
6959 #if 0 | |
6960 #if defined(DISABLE_PREDECODED_SEEK) | |
6961 Sound_FreeSample(sample); | |
6962 ret_data->sample = NULL; | |
6963 #elif !defined(DISABLE_SEEK_MEMORY_OPTIMIZATION) | |
6964 Sound_FreeSample(sample); | |
6965 ret_data->sample = NULL; | |
6966 #else | |
6967 /* We keep a copy of the sample around. | |
6968 * so don't do anything. | |
6969 */ | |
6970 #endif | |
6971 #endif | |
6972 | |
6973 fprintf(stderr, "Made it\n"); | |
6974 /* okay we're done here */ | |
6975 } | |
6976 else | |
6977 { | |
6978 /* Shouldn't get here */ | |
6979 ALmixer_SetError("Unknown decode mode"); | |
6980 Sound_FreeSample(sample); | |
6981 free(ret_data); | |
6982 return NULL; | |
6983 } | |
6984 | |
6985 fprintf(stderr, "Returning data\n"); | |
6986 return ret_data; | |
6987 } | |
6988 | |
6989 | |
6990 /* This will load a sample for us. Most of the uglyness is | |
6991 * error checking and the fact that streamed/predecoded files | |
6992 * must be treated differently. | |
6993 * I don't like the AudioInfo parameter. I removed it once, | |
6994 * but the system will fail on RAW samples because the user | |
6995 * must specify it, so I had to bring it back. | |
6996 * Remember I must close the rwops if there is an error before NewSample() | |
6997 */ | |
6998 ALmixer_Data* ALmixer_LoadSample_RW(SDL_RWops* rwops, const char* fileext, Uint32 buffersize, Uint8 decode_mode, Uint32 max_queue_buffers, Uint32 num_startup_buffers, Uint8 access_data) | |
6999 { | |
7000 Sound_Sample* sample = NULL; | |
7001 Sound_AudioInfo target; | |
7002 | |
7003 /* Initialize target values to defaults | |
7004 * 0 tells SDL_sound to use the "actual" values | |
7005 */ | |
7006 target.channels = 0; | |
7007 target.rate = 0; | |
7008 #if 0 | |
7009 /* This requires my new additions to SDL_sound. It will | |
7010 * convert the sample to the proper endian order. | |
7011 * If the actual is 8-bit, it will do unsigned, if | |
7012 * the actual is 16-bit, it will do signed. | |
7013 * I'm told by Ryan Gordon that OpenAL prefers the signedness | |
7014 * in this way. | |
7015 */ | |
7016 target.format = AUDIO_U8S16SYS; | |
7017 #else | |
7018 target.format = AUDIO_S16SYS; | |
7019 #endif | |
7020 | |
7021 /* Set a default buffersize if needed */ | |
7022 if(0 == buffersize) | |
7023 { | |
7024 buffersize = ALMIXER_DEFAULT_BUFFERSIZE; | |
7025 } | |
7026 | |
7027 sample = Sound_NewSample(rwops, fileext, &target, buffersize); | |
7028 if(NULL == sample) | |
7029 { | |
7030 ALmixer_SetError(Sound_GetError()); | |
7031 return NULL; | |
7032 } | |
7033 | |
7034 return( DoLoad(sample, buffersize, decode_mode, max_queue_buffers, num_startup_buffers, access_data)); | |
7035 } | |
7036 | |
7037 | |
7038 | |
7039 /* This will load a sample for us from | |
7040 * a file (instead of RWops). Most of the uglyness is | |
7041 * error checking and the fact that streamed/predecoded files | |
7042 * must be treated differently. | |
7043 */ | |
7044 ALmixer_Data* ALmixer_LoadSample(const char* filename, Uint32 buffersize, Uint8 decode_mode, Uint32 max_queue_buffers, Uint32 num_startup_buffers, Uint8 access_data) | |
7045 { | |
7046 Sound_Sample* sample = NULL; | |
7047 Sound_AudioInfo target; | |
7048 | |
7049 /* Initialize target values to defaults | |
7050 * 0 tells SDL_sound to use the "actual" values | |
7051 */ | |
7052 target.channels = 0; | |
7053 target.rate = 0; | |
7054 | |
7055 #if 0 | |
7056 /* This requires my new additions to SDL_sound. It will | |
7057 * convert the sample to the proper endian order. | |
7058 * If the actual is 8-bit, it will do unsigned, if | |
7059 * the actual is 16-bit, it will do signed. | |
7060 * I'm told by Ryan Gordon that OpenAL prefers the signedness | |
7061 * in this way. | |
7062 */ | |
7063 target.format = AUDIO_U8S16SYS; | |
7064 #else | |
7065 target.format = AUDIO_S16SYS; | |
7066 #endif | |
7067 | |
7068 #if 0 | |
7069 /* Okay, here's a messy hack. The problem is that we need | |
7070 * to convert the sample to have the correct bitdepth, | |
7071 * endian order, and signedness values. | |
7072 * The bit depth is 8 or 16. | |
7073 * The endian order is the native order of the system. | |
7074 * The signedness depends on what the original value | |
7075 * of the sample. Unfortunately, we can't specify these | |
7076 * values until we after we already know what the original | |
7077 * values were for bitdepth and signedness. | |
7078 * So we must open the file once to get the values, | |
7079 * then close it, and then reopen it with the | |
7080 * correct desired target values. | |
7081 * I tried changing the sample->desired field after | |
7082 * the NewSample call, but it had no effect, so | |
7083 * it looks like it must be set on open. | |
7084 */ | |
7085 /* Pick a small buffersize for the first open to not | |
7086 * waste much time allocating memory */ | |
7087 sample = Sound_NewSampleFromFile(filename, NULL, 512); | |
7088 if(NULL == sample) | |
7089 { | |
7090 ALmixer_SetError(Sound_GetError()); | |
7091 return NULL; | |
7092 } | |
7093 | |
7094 bit_depth = GetBitDepth(sample->actual.format); | |
7095 signedness_value = GetSignednessValue(sample->actual.format); | |
7096 if(8 == bit_depth) | |
7097 { | |
7098 /* If 8 bit, then we don't have to worry about | |
7099 * endian issues. We can just use the actual format | |
7100 * value and it should do the right thing | |
7101 */ | |
7102 target.format = sample->actual.format; | |
7103 } | |
7104 else | |
7105 { | |
7106 /* We'll assume it's 16-bit, and if it's not | |
7107 * hopefully SDL_sound will return an error, | |
7108 * or let us convert to 16-bit | |
7109 */ | |
7110 /* Now we need to get the correct signedness */ | |
7111 if(ALMIXER_UNSIGNED_VALUE == signedness_value) | |
7112 { | |
7113 /* Set to Unsigned 16-bit, system endian order */ | |
7114 target.format = AUDIO_U16SYS; | |
7115 } | |
7116 else | |
7117 { | |
7118 /* Again, we'll assume it's Signed 16-bit system order | |
7119 * or force the conversion and hope it works out | |
7120 */ | |
7121 target.format = AUDIO_S16SYS; | |
7122 } | |
7123 } | |
7124 | |
7125 /* Now we have the correct info. We need to close and reopen */ | |
7126 Sound_FreeSample(sample); | |
7127 #endif | |
7128 | |
7129 sample = Sound_NewSampleFromFile(filename, &target, buffersize); | |
7130 if(NULL == sample) | |
7131 { | |
7132 ALmixer_SetError(Sound_GetError()); | |
7133 return NULL; | |
7134 } | |
7135 | |
7136 fprintf(stderr, "Correction test: Actual rate=%d, desired=%d, actual format=%d, desired format=%d\n", sample->actual.rate, sample->desired.rate, sample->actual.format, sample->desired.format); | |
7137 | |
7138 return( DoLoad(sample, buffersize, decode_mode, max_queue_buffers, num_startup_buffers, access_data)); | |
7139 } | |
7140 | |
7141 | |
7142 /* This is a back door for RAW samples or if you need the | |
7143 * AudioInfo field. Use at your own risk. | |
7144 */ | |
7145 ALmixer_Data* ALmixer_LoadSample_RAW_RW(SDL_RWops* rwops, const char* fileext, Sound_AudioInfo* desired, Uint32 buffersize, Uint8 decode_mode, Uint32 max_queue_buffers, Uint32 num_startup_buffers, Uint8 access_data) | |
7146 { | |
7147 Sound_Sample* sample = NULL; | |
7148 sample = Sound_NewSample(rwops, fileext, desired, buffersize); | |
7149 if(NULL == sample) | |
7150 { | |
7151 ALmixer_SetError(Sound_GetError()); | |
7152 return NULL; | |
7153 } | |
7154 return( DoLoad(sample, buffersize, decode_mode, max_queue_buffers, num_startup_buffers, access_data)); | |
7155 } | |
7156 | |
7157 | |
7158 | |
7159 | |
7160 /* This is a back door for RAW samples or if you need the | |
7161 * AudioInfo field. Use at your own risk. | |
7162 */ | |
7163 ALmixer_Data* ALmixer_LoadSample_RAW(const char* filename, Sound_AudioInfo* desired, Uint32 buffersize, Uint8 decode_mode, Uint32 max_queue_buffers, Uint32 num_startup_buffers, Uint8 access_data) | |
7164 { | |
7165 Sound_Sample* sample = NULL; | |
7166 sample = Sound_NewSampleFromFile(filename, desired, buffersize); | |
7167 if(NULL == sample) | |
7168 { | |
7169 ALmixer_SetError(Sound_GetError()); | |
7170 return NULL; | |
7171 } | |
7172 return( DoLoad(sample, buffersize, decode_mode, max_queue_buffers, num_startup_buffers, access_data)); | |
7173 } | |
7174 | |
7175 | |
7176 | |
7177 | |
7178 void ALmixer_FreeData(ALmixer_Data* data) | |
7179 { | |
7180 ALenum error; | |
7181 if(NULL == data) | |
7182 { | |
7183 return; | |
7184 } | |
7185 | |
7186 if(data->decoded_all) | |
7187 { | |
7188 /* If access_data was enabled, then the Sound_Sample* | |
7189 * still exists. We need to free it | |
7190 */ | |
7191 if(data->sample != NULL) | |
7192 { | |
7193 Sound_FreeSample(data->sample); | |
7194 } | |
7195 alDeleteBuffers(1, data->buffer); | |
7196 if((error = alGetError()) != AL_NO_ERROR) | |
7197 { | |
7198 fprintf(stderr, "70Testing error: %s\n", | |
7199 aluGetErrorString(error)); | |
7200 } | |
7201 | |
7202 } | |
7203 else | |
7204 { | |
7205 Uint32 i; | |
7206 | |
7207 /* Delete buffer copies if access_data was enabled */ | |
7208 if(data->buffer_map_list != NULL) | |
7209 { | |
7210 for(i=0; i<data->max_queue_buffers; i++) | |
7211 { | |
7212 free(data->buffer_map_list[i].data); | |
7213 } | |
7214 free(data->buffer_map_list); | |
7215 } | |
7216 if(data->circular_buffer_queue != NULL) | |
7217 { | |
7218 CircularQueueUnsignedInt_FreeQueue(data->circular_buffer_queue); | |
7219 } | |
7220 | |
7221 Sound_FreeSample(data->sample); | |
7222 alDeleteBuffers(data->max_queue_buffers, data->buffer); | |
7223 if((error = alGetError()) != AL_NO_ERROR) | |
7224 { | |
7225 fprintf(stderr, "71Testing error: %s\n", | |
7226 aluGetErrorString(error)); | |
7227 } | |
7228 } | |
7229 free(data->buffer); | |
7230 free(data); | |
7231 } | |
7232 | |
7233 Sint32 ALmixer_GetTotalTime(ALmixer_Data* data) | |
7234 { | |
7235 return data->total_time; | |
7236 } | |
7237 | |
7238 /* This function will look up the source for the corresponding channel */ | |
7239 /* Must return 0 on error instead of -1 because of unsigned int */ | |
7240 ALuint ALmixer_GetSource(Sint32 channel) | |
7241 { | |
7242 ALuint retval; | |
7243 SDL_LockMutex(simple_lock); | |
7244 retval = Internal_GetSource(channel); | |
7245 SDL_UnlockMutex(simple_lock); | |
7246 return retval; | |
7247 } | |
7248 | |
7249 /* This function will look up the channel for the corresponding source */ | |
7250 Sint32 ALmixer_GetChannel(ALuint source) | |
7251 { | |
7252 Sint32 retval; | |
7253 SDL_LockMutex(simple_lock); | |
7254 retval = Internal_GetChannel(source); | |
7255 SDL_UnlockMutex(simple_lock); | |
7256 return retval; | |
7257 } | |
7258 | |
7259 Sint32 ALmixer_FindFreeChannel(Sint32 start_channel) | |
7260 { | |
7261 Sint32 retval; | |
7262 SDL_LockMutex(simple_lock); | |
7263 retval = Internal_FindFreeChannel(start_channel); | |
7264 SDL_UnlockMutex(simple_lock); | |
7265 return retval; | |
7266 } | |
7267 | |
7268 | |
7269 | |
7270 /* API update function. | |
7271 * It should return the number of buffers that were | |
7272 * queued during the call. The value might be | |
7273 * used to guage how long you might wait to | |
7274 * call the next update loop in case you are worried | |
7275 * about preserving CPU cycles. The idea is that | |
7276 * when a buffer is queued, there was probably some | |
7277 * CPU intensive looping which took awhile. | |
7278 * It's mainly provided as a convenience. | |
7279 * Timing the call with SDL_GetTicks() would produce | |
7280 * more accurate information. | |
7281 * Returns a negative value if there was an error, | |
7282 * the value being the number of errors. | |
7283 */ | |
7284 Sint32 ALmixer_Update() | |
7285 { | |
7286 #ifdef ENABLE_ALMIXER_THREADS | |
7287 /* The thread will handle all updates by itself. | |
7288 * Don't allow the user to explicitly call update. | |
7289 */ | |
7290 return 0; | |
7291 #else | |
7292 return( Update_ALmixer(NULL) ); | |
7293 #endif | |
7294 } | |
7295 | |
7296 | |
7297 | |
7298 void ALmixer_ChannelFinished(void (*channel_finished)(Sint32 channel, void* userdata), void* userdata) | |
7299 { | |
7300 SDL_LockMutex(simple_lock); | |
7301 Channel_Done_Callback = channel_finished; | |
7302 Channel_Done_Callback_Userdata = userdata; | |
7303 SDL_UnlockMutex(simple_lock); | |
7304 } | |
7305 | |
7306 | |
7307 void ALmixer_ChannelData(void (*channel_data)(Sint32 which_chan, Uint8* data, Uint32 num_bytes, Uint32 frequency, Uint8 channels, Uint8 bitdepth, Uint16 format, Uint8 decode_mode)) | |
7308 { | |
7309 SDL_LockMutex(simple_lock); | |
7310 Channel_Data_Callback = channel_data; | |
7311 SDL_UnlockMutex(simple_lock); | |
7312 } | |
7313 | |
7314 | |
7315 | |
7316 | |
7317 | |
7318 Sint32 ALmixer_PlayChannelTimed(Sint32 channel, ALmixer_Data* data, Sint32 loops, Sint32 ticks) | |
7319 { | |
7320 Sint32 retval; | |
7321 SDL_LockMutex(simple_lock); | |
7322 retval = Internal_PlayChannelTimed(channel, data, loops, ticks); | |
7323 SDL_UnlockMutex(simple_lock); | |
7324 return retval; | |
7325 } | |
7326 | |
7327 | |
7328 /* In case the user wants to specify a source instead of a channel, | |
7329 * they may use this function. This function will look up the | |
7330 * source-to-channel map, and convert the call into a | |
7331 * PlayChannelTimed() function call. | |
7332 * Returns the channel it's being played on. | |
7333 * Note: If you are prefer this method, then you need to be careful | |
7334 * about using PlayChannel, particularly if you request the | |
7335 * first available channels because source and channels have | |
7336 * a one-to-one mapping in this API. It is quite easy for | |
7337 * a channel/source to already be in use because of this. | |
7338 * In this event, an error message will be returned to you. | |
7339 */ | |
7340 ALuint ALmixer_PlaySourceTimed(ALuint source, ALmixer_Data* data, Sint32 loops, Sint32 ticks) | |
7341 { | |
7342 ALuint retval; | |
7343 SDL_LockMutex(simple_lock); | |
7344 retval = Internal_PlaySourceTimed(source, data, loops, ticks); | |
7345 SDL_UnlockMutex(simple_lock); | |
7346 return retval; | |
7347 } | |
7348 | |
7349 | |
7350 /* Will return the number of channels halted | |
7351 * or 0 for error | |
7352 */ | |
7353 Sint32 ALmixer_HaltChannel(Sint32 channel) | |
7354 { | |
7355 Sint32 retval; | |
7356 SDL_LockMutex(simple_lock); | |
7357 retval = Internal_HaltChannel(channel); | |
7358 SDL_UnlockMutex(simple_lock); | |
7359 return retval; | |
7360 } | |
7361 | |
7362 /* Will return the number of channels halted | |
7363 * or 0 for error | |
7364 */ | |
7365 Sint32 ALmixer_HaltSource(ALuint source) | |
7366 { | |
7367 Sint32 retval; | |
7368 SDL_LockMutex(simple_lock); | |
7369 retval = Internal_HaltSource(source); | |
7370 SDL_UnlockMutex(simple_lock); | |
7371 return retval; | |
7372 } | |
7373 | |
7374 | |
7375 /* This will rewind the SDL_Sound sample for streamed | |
7376 * samples and start buffering up the data for the next | |
7377 * playback. This may require samples to be halted | |
7378 */ | |
7379 Sint32 ALmixer_RewindData(ALmixer_Data* data) | |
7380 { | |
7381 Sint32 retval; | |
7382 SDL_LockMutex(simple_lock); | |
7383 retval = Internal_RewindData(data); | |
7384 SDL_UnlockMutex(simple_lock); | |
7385 return retval; | |
7386 } | |
7387 | |
7388 Sint32 ALmixer_RewindChannel(Sint32 channel) | |
7389 { | |
7390 Sint32 retval; | |
7391 SDL_LockMutex(simple_lock); | |
7392 retval = Internal_RewindChannel(channel); | |
7393 SDL_UnlockMutex(simple_lock); | |
7394 return retval; | |
7395 } | |
7396 | |
7397 Sint32 ALmixer_RewindSource(ALuint source) | |
7398 { | |
7399 Sint32 retval; | |
7400 SDL_LockMutex(simple_lock); | |
7401 retval = Internal_RewindSource(source); | |
7402 SDL_UnlockMutex(simple_lock); | |
7403 return retval; | |
7404 } | |
7405 | |
7406 Sint32 ALmixer_PauseChannel(Sint32 channel) | |
7407 { | |
7408 Sint32 retval; | |
7409 SDL_LockMutex(simple_lock); | |
7410 retval = Internal_PauseChannel(channel); | |
7411 SDL_UnlockMutex(simple_lock); | |
7412 return retval; | |
7413 } | |
7414 | |
7415 Sint32 ALmixer_PauseSource(ALuint source) | |
7416 { | |
7417 Sint32 retval; | |
7418 SDL_LockMutex(simple_lock); | |
7419 retval = Internal_PauseSource(source); | |
7420 SDL_UnlockMutex(simple_lock); | |
7421 return retval; | |
7422 } | |
7423 | |
7424 Sint32 ALmixer_ResumeChannel(Sint32 channel) | |
7425 { | |
7426 Sint32 retval; | |
7427 SDL_LockMutex(simple_lock); | |
7428 retval = Internal_ResumeChannel(channel); | |
7429 SDL_UnlockMutex(simple_lock); | |
7430 return retval; | |
7431 } | |
7432 | |
7433 Sint32 ALmixer_ResumeSource(ALuint source) | |
7434 { | |
7435 Sint32 retval; | |
7436 SDL_LockMutex(simple_lock); | |
7437 retval = Internal_ResumeSource(source); | |
7438 SDL_UnlockMutex(simple_lock); | |
7439 return retval; | |
7440 } | |
7441 | |
7442 /* Might consider setting eof to 0 as a "feature" | |
7443 * This will allow seek to end to stay there because | |
7444 * Play automatically rewinds if at the end */ | |
7445 Sint32 ALmixer_Seek(ALmixer_Data* data, Uint32 msec) | |
7446 { | |
7447 Sint32 retval; | |
7448 SDL_LockMutex(simple_lock); | |
7449 retval = Internal_Seek(data, msec); | |
7450 SDL_UnlockMutex(simple_lock); | |
7451 return retval; | |
7452 } | |
7453 | |
7454 Sint32 ALmixer_FadeInChannelTimed(Sint32 channel, ALmixer_Data* data, Sint32 loops, Uint32 fade_ticks, Sint32 expire_ticks) | |
7455 { | |
7456 Sint32 retval; | |
7457 SDL_LockMutex(simple_lock); | |
7458 retval = Internal_FadeInChannelTimed(channel, data, loops, fade_ticks, expire_ticks); | |
7459 SDL_UnlockMutex(simple_lock); | |
7460 return retval; | |
7461 } | |
7462 | |
7463 ALuint ALmixer_FadeInSourceTimed(ALuint source, ALmixer_Data* data, Sint32 loops, Uint32 fade_ticks, Sint32 expire_ticks) | |
7464 { | |
7465 ALuint retval; | |
7466 SDL_LockMutex(simple_lock); | |
7467 retval = Internal_FadeInSourceTimed(source, data, loops, fade_ticks, expire_ticks); | |
7468 SDL_UnlockMutex(simple_lock); | |
7469 return retval; | |
7470 } | |
7471 | |
7472 Sint32 ALmixer_FadeOutChannel(Sint32 channel, Uint32 ticks) | |
7473 { | |
7474 Sint32 retval; | |
7475 SDL_LockMutex(simple_lock); | |
7476 retval = Internal_FadeOutChannel(channel, ticks); | |
7477 SDL_UnlockMutex(simple_lock); | |
7478 return retval; | |
7479 } | |
7480 | |
7481 Sint32 ALmixer_FadeOutSource(ALuint source, Uint32 ticks) | |
7482 { | |
7483 Sint32 retval; | |
7484 SDL_LockMutex(simple_lock); | |
7485 retval = Internal_FadeOutSource(source, ticks); | |
7486 SDL_UnlockMutex(simple_lock); | |
7487 return retval; | |
7488 } | |
7489 | |
7490 Sint32 ALmixer_FadeChannel(Sint32 channel, Uint32 ticks, ALfloat volume) | |
7491 { | |
7492 Sint32 retval; | |
7493 SDL_LockMutex(simple_lock); | |
7494 retval = Internal_FadeChannel(channel, ticks, volume); | |
7495 SDL_UnlockMutex(simple_lock); | |
7496 return retval; | |
7497 } | |
7498 | |
7499 Sint32 ALmixer_FadeSource(ALuint source, Uint32 ticks, ALfloat volume) | |
7500 { | |
7501 Sint32 retval; | |
7502 SDL_LockMutex(simple_lock); | |
7503 retval = Internal_FadeSource(source, ticks, volume); | |
7504 SDL_UnlockMutex(simple_lock); | |
7505 return retval; | |
7506 } | |
7507 | |
7508 Sint32 ALmixer_SetMaxVolumeChannel(Sint32 channel, ALfloat volume) | |
7509 { | |
7510 Sint32 retval; | |
7511 SDL_LockMutex(simple_lock); | |
7512 retval = Internal_SetMaxVolumeChannel(channel, volume); | |
7513 SDL_UnlockMutex(simple_lock); | |
7514 return retval; | |
7515 } | |
7516 | |
7517 Sint32 ALmixer_SetMaxVolumeSource(ALuint source, ALfloat volume) | |
7518 { | |
7519 Sint32 retval; | |
7520 SDL_LockMutex(simple_lock); | |
7521 retval = Internal_SetMaxVolumeSource(source, volume); | |
7522 SDL_UnlockMutex(simple_lock); | |
7523 return retval; | |
7524 } | |
7525 | |
7526 ALfloat ALmixer_GetMaxVolumeChannel(Sint32 channel) | |
7527 { | |
7528 ALfloat retval; | |
7529 SDL_LockMutex(simple_lock); | |
7530 retval = Internal_GetMaxVolumeChannel(channel); | |
7531 SDL_UnlockMutex(simple_lock); | |
7532 return retval; | |
7533 } | |
7534 | |
7535 ALfloat ALmixer_GetMaxVolumeSource(ALuint source) | |
7536 { | |
7537 ALfloat retval; | |
7538 SDL_LockMutex(simple_lock); | |
7539 retval = Internal_GetMaxVolumeSource(source); | |
7540 SDL_UnlockMutex(simple_lock); | |
7541 return retval; | |
7542 } | |
7543 | |
7544 | |
7545 Sint32 ALmixer_SetMinVolumeChannel(Sint32 channel, ALfloat volume) | |
7546 { | |
7547 Sint32 retval; | |
7548 SDL_LockMutex(simple_lock); | |
7549 retval = Internal_SetMinVolumeChannel(channel, volume); | |
7550 SDL_UnlockMutex(simple_lock); | |
7551 return retval; | |
7552 } | |
7553 | |
7554 Sint32 ALmixer_SetMinVolumeSource(ALuint source, ALfloat volume) | |
7555 { | |
7556 Sint32 retval; | |
7557 SDL_LockMutex(simple_lock); | |
7558 retval = Internal_SetMinVolumeSource(source, volume); | |
7559 SDL_UnlockMutex(simple_lock); | |
7560 return retval; | |
7561 } | |
7562 | |
7563 ALfloat ALmixer_GetMinVolumeChannel(Sint32 channel) | |
7564 { | |
7565 ALfloat retval; | |
7566 SDL_LockMutex(simple_lock); | |
7567 retval = Internal_GetMinVolumeChannel(channel); | |
7568 SDL_UnlockMutex(simple_lock); | |
7569 return retval; | |
7570 } | |
7571 | |
7572 ALfloat ALmixer_GetMinVolumeSource(ALuint source) | |
7573 { | |
7574 ALfloat retval; | |
7575 SDL_LockMutex(simple_lock); | |
7576 retval = Internal_GetMinVolumeSource(source); | |
7577 SDL_UnlockMutex(simple_lock); | |
7578 return retval; | |
7579 } | |
7580 | |
7581 | |
7582 | |
7583 Sint32 ALmixer_SetMasterVolume(ALfloat volume) | |
7584 { | |
7585 Sint32 retval; | |
7586 SDL_LockMutex(simple_lock); | |
7587 retval = Internal_SetMasterVolume(volume); | |
7588 SDL_UnlockMutex(simple_lock); | |
7589 return retval; | |
7590 } | |
7591 | |
7592 ALfloat ALmixer_GetMasterVolume() | |
7593 { | |
7594 ALfloat retval; | |
7595 SDL_LockMutex(simple_lock); | |
7596 retval = Internal_GetMasterVolume(); | |
7597 SDL_UnlockMutex(simple_lock); | |
7598 return retval; | |
7599 } | |
7600 | |
7601 Sint32 ALmixer_ExpireChannel(Sint32 channel, Sint32 ticks) | |
7602 { | |
7603 Sint32 retval; | |
7604 SDL_LockMutex(simple_lock); | |
7605 retval = Internal_ExpireChannel(channel, ticks); | |
7606 SDL_UnlockMutex(simple_lock); | |
7607 return retval; | |
7608 } | |
7609 | |
7610 Sint32 ALmixer_ExpireSource(ALuint source, Sint32 ticks) | |
7611 { | |
7612 Sint32 retval; | |
7613 SDL_LockMutex(simple_lock); | |
7614 retval = Internal_ExpireSource(source, ticks); | |
7615 SDL_UnlockMutex(simple_lock); | |
7616 return retval; | |
7617 } | |
7618 | |
7619 Sint32 ALmixer_QueryChannel(Sint32 channel) | |
7620 { | |
7621 Sint32 retval; | |
7622 SDL_LockMutex(simple_lock); | |
7623 retval = Internal_QueryChannel(channel); | |
7624 SDL_UnlockMutex(simple_lock); | |
7625 return retval; | |
7626 } | |
7627 | |
7628 Sint32 ALmixer_QuerySource(ALuint source) | |
7629 { | |
7630 Sint32 retval; | |
7631 SDL_LockMutex(simple_lock); | |
7632 retval = Internal_QuerySource(source); | |
7633 SDL_UnlockMutex(simple_lock); | |
7634 return retval; | |
7635 } | |
7636 | |
7637 | |
7638 Sint32 ALmixer_PlayingChannel(Sint32 channel) | |
7639 { | |
7640 Sint32 retval; | |
7641 SDL_LockMutex(simple_lock); | |
7642 retval = Internal_PlayingChannel(channel); | |
7643 SDL_UnlockMutex(simple_lock); | |
7644 return retval; | |
7645 } | |
7646 | |
7647 Sint32 ALmixer_PlayingSource(ALuint source) | |
7648 { | |
7649 Sint32 retval; | |
7650 SDL_LockMutex(simple_lock); | |
7651 retval = Internal_PlayingSource(source); | |
7652 SDL_UnlockMutex(simple_lock); | |
7653 return retval; | |
7654 } | |
7655 | |
7656 | |
7657 Sint32 ALmixer_PausedChannel(Sint32 channel) | |
7658 { | |
7659 Sint32 retval; | |
7660 SDL_LockMutex(simple_lock); | |
7661 retval = Internal_PausedChannel(channel); | |
7662 SDL_UnlockMutex(simple_lock); | |
7663 return retval; | |
7664 } | |
7665 | |
7666 Sint32 ALmixer_PausedSource(ALuint source) | |
7667 { | |
7668 Sint32 retval; | |
7669 SDL_LockMutex(simple_lock); | |
7670 retval = Internal_PausedSource(source); | |
7671 SDL_UnlockMutex(simple_lock); | |
7672 return retval; | |
7673 } | |
7674 | |
7675 | |
7676 Sint32 ALmixer_CountAllFreeChannels() | |
7677 { | |
7678 Sint32 retval; | |
7679 SDL_LockMutex(simple_lock); | |
7680 retval = Internal_CountAllFreeChannels(); | |
7681 SDL_UnlockMutex(simple_lock); | |
7682 return retval; | |
7683 } | |
7684 | |
7685 Sint32 ALmixer_CountUnreservedFreeChannels() | |
7686 { | |
7687 Sint32 retval; | |
7688 SDL_LockMutex(simple_lock); | |
7689 retval = Internal_CountUnreservedFreeChannels(); | |
7690 SDL_UnlockMutex(simple_lock); | |
7691 return retval; | |
7692 } | |
7693 | |
7694 Sint32 ALmixer_CountAllUsedChannels() | |
7695 { | |
7696 Sint32 retval; | |
7697 SDL_LockMutex(simple_lock); | |
7698 retval = Internal_CountAllUsedChannels(); | |
7699 SDL_UnlockMutex(simple_lock); | |
7700 return retval; | |
7701 } | |
7702 | |
7703 Sint32 ALmixer_CountUnreservedUsedChannels() | |
7704 { | |
7705 Sint32 retval; | |
7706 SDL_LockMutex(simple_lock); | |
7707 retval = Internal_CountUnreservedUsedChannels(); | |
7708 SDL_UnlockMutex(simple_lock); | |
7709 return retval; | |
7710 } | |
7711 | |
7712 | |
7713 | |
7714 | |
7715 |