?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Fix a mixed-sign-comparison warning on MSVC
[openal-soft.git] / OpenAL32 / alFilter.c
blob855a7c6bde2d4dfedc317d242e48ac94b127460f
1 /**
2 * OpenAL cross platform audio library
3 * Copyright (C) 1999-2007 by authors.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
19 */
20
21 #include "config.h"
22
23 #include <stdlib.h>
24
25 #include "alMain.h"
26 #include "alu.h"
27 #include "alFilter.h"
28 #include "alThunk.h"
29 #include "alError.h"
30
31
32 extern inline void LockFiltersRead(ALCdevice *device);
33 extern inline void UnlockFiltersRead(ALCdevice *device);
34 extern inline void LockFiltersWrite(ALCdevice *device);
35 extern inline void UnlockFiltersWrite(ALCdevice *device);
36 extern inline struct ALfilter *LookupFilter(ALCdevice *device, ALuint id);
37 extern inline struct ALfilter *RemoveFilter(ALCdevice *device, ALuint id);
38 extern inline void ALfilterState_clear(ALfilterState *filter);
39 extern inline void ALfilterState_processPassthru(ALfilterState *filter, const ALfloat *restrict src, ALsizei numsamples);
40 extern inline ALfloat calc_rcpQ_from_slope(ALfloat gain, ALfloat slope);
41 extern inline ALfloat calc_rcpQ_from_bandwidth(ALfloat freq_mult, ALfloat bandwidth);
42
43 static void InitFilterParams(ALfilter *filter, ALenum type);
44
45
46 AL_API ALvoid AL_APIENTRY alGenFilters(ALsizei n, ALuint *filters)
47 {
48 ALCdevice *device;
49 ALCcontext *context;
50 ALsizei cur = 0;
51 ALenum err;
52
53 context = GetContextRef();
54 if(!context) return;
55
56 if(!(n >= 0))
57 SET_ERROR_AND_GOTO(context, AL_INVALID_VALUE, done);
58
59 device = context->Device;
60 for(cur = 0;cur < n;cur++)
61 {
62 ALfilter *filter = al_calloc(16, sizeof(ALfilter));
63 if(!filter)
64 {
65 alDeleteFilters(cur, filters);
66 SET_ERROR_AND_GOTO(context, AL_OUT_OF_MEMORY, done);
67 }
68 InitFilterParams(filter, AL_FILTER_NULL);
69
70 err = NewThunkEntry(&filter->id);
71 if(err == AL_NO_ERROR)
72 err = InsertUIntMapEntry(&device->FilterMap, filter->id, filter);
73 if(err != AL_NO_ERROR)
74 {
75 FreeThunkEntry(filter->id);
76 memset(filter, 0, sizeof(ALfilter));
77 al_free(filter);
78
79 alDeleteFilters(cur, filters);
80 SET_ERROR_AND_GOTO(context, err, done);
81 }
82
83 filters[cur] = filter->id;
84 }
85
86 done:
87 ALCcontext_DecRef(context);
88 }
89
90 AL_API ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, const ALuint *filters)
91 {
92 ALCdevice *device;
93 ALCcontext *context;
94 ALfilter *filter;
95 ALsizei i;
96
97 context = GetContextRef();
98 if(!context) return;
99
100 device = context->Device;
101 LockFiltersWrite(device);
102 if(!(n >= 0))
103 SET_ERROR_AND_GOTO(context, AL_INVALID_VALUE, done);
104 for(i = 0;i < n;i++)
105 {
106 if(filters[i] && LookupFilter(device, filters[i]) == NULL)
107 SET_ERROR_AND_GOTO(context, AL_INVALID_NAME, done);
108 }
109 for(i = 0;i < n;i++)
110 {
111 if((filter=RemoveFilter(device, filters[i])) == NULL)
112 continue;
113 FreeThunkEntry(filter->id);
114
115 memset(filter, 0, sizeof(*filter));
116 al_free(filter);
117 }
118
119 done:
120 UnlockFiltersWrite(device);
121 ALCcontext_DecRef(context);
122 }
123
124 AL_API ALboolean AL_APIENTRY alIsFilter(ALuint filter)
125 {
126 ALCcontext *Context;
127 ALboolean result;
128
129 Context = GetContextRef();
130 if(!Context) return AL_FALSE;
131
132 LockFiltersRead(Context->Device);
133 result = ((!filter || LookupFilter(Context->Device, filter)) ?
134 AL_TRUE : AL_FALSE);
135 UnlockFiltersRead(Context->Device);
136
137 ALCcontext_DecRef(Context);
138
139 return result;
140 }
141
142 AL_API ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint value)
143 {
144 ALCcontext *Context;
145 ALCdevice *Device;
146 ALfilter *ALFilter;
147
148 Context = GetContextRef();
149 if(!Context) return;
150
151 Device = Context->Device;
152 LockFiltersWrite(Device);
153 if((ALFilter=LookupFilter(Device, filter)) == NULL)
154 alSetError(Context, AL_INVALID_NAME);
155 else
156 {
157 if(param == AL_FILTER_TYPE)
158 {
159 if(value == AL_FILTER_NULL || value == AL_FILTER_LOWPASS ||
160 value == AL_FILTER_HIGHPASS || value == AL_FILTER_BANDPASS)
161 InitFilterParams(ALFilter, value);
162 else
163 alSetError(Context, AL_INVALID_VALUE);
164 }
165 else
166 {
167 /* Call the appropriate handler */
168 ALfilter_SetParami(ALFilter, Context, param, value);
169 }
170 }
171 UnlockFiltersWrite(Device);
172
173 ALCcontext_DecRef(Context);
174 }
175
176 AL_API ALvoid AL_APIENTRY alFilteriv(ALuint filter, ALenum param, const ALint *values)
177 {
178 ALCcontext *Context;
179 ALCdevice *Device;
180 ALfilter *ALFilter;
181
182 switch(param)
183 {
184 case AL_FILTER_TYPE:
185 alFilteri(filter, param, values[0]);
186 return;
187 }
188
189 Context = GetContextRef();
190 if(!Context) return;
191
192 Device = Context->Device;
193 LockFiltersWrite(Device);
194 if((ALFilter=LookupFilter(Device, filter)) == NULL)
195 alSetError(Context, AL_INVALID_NAME);
196 else
197 {
198 /* Call the appropriate handler */
199 ALfilter_SetParamiv(ALFilter, Context, param, values);
200 }
201 UnlockFiltersWrite(Device);
202
203 ALCcontext_DecRef(Context);
204 }
205
206 AL_API ALvoid AL_APIENTRY alFilterf(ALuint filter, ALenum param, ALfloat value)
207 {
208 ALCcontext *Context;
209 ALCdevice *Device;
210 ALfilter *ALFilter;
211
212 Context = GetContextRef();
213 if(!Context) return;
214
215 Device = Context->Device;
216 LockFiltersWrite(Device);
217 if((ALFilter=LookupFilter(Device, filter)) == NULL)
218 alSetError(Context, AL_INVALID_NAME);
219 else
220 {
221 /* Call the appropriate handler */
222 ALfilter_SetParamf(ALFilter, Context, param, value);
223 }
224 UnlockFiltersWrite(Device);
225
226 ALCcontext_DecRef(Context);
227 }
228
229 AL_API ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, const ALfloat *values)
230 {
231 ALCcontext *Context;
232 ALCdevice *Device;
233 ALfilter *ALFilter;
234
235 Context = GetContextRef();
236 if(!Context) return;
237
238 Device = Context->Device;
239 LockFiltersWrite(Device);
240 if((ALFilter=LookupFilter(Device, filter)) == NULL)
241 alSetError(Context, AL_INVALID_NAME);
242 else
243 {
244 /* Call the appropriate handler */
245 ALfilter_SetParamfv(ALFilter, Context, param, values);
246 }
247 UnlockFiltersWrite(Device);
248
249 ALCcontext_DecRef(Context);
250 }
251
252 AL_API ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *value)
253 {
254 ALCcontext *Context;
255 ALCdevice *Device;
256 ALfilter *ALFilter;
257
258 Context = GetContextRef();
259 if(!Context) return;
260
261 Device = Context->Device;
262 LockFiltersRead(Device);
263 if((ALFilter=LookupFilter(Device, filter)) == NULL)
264 alSetError(Context, AL_INVALID_NAME);
265 else
266 {
267 if(param == AL_FILTER_TYPE)
268 *value = ALFilter->type;
269 else
270 {
271 /* Call the appropriate handler */
272 ALfilter_GetParami(ALFilter, Context, param, value);
273 }
274 }
275 UnlockFiltersRead(Device);
276
277 ALCcontext_DecRef(Context);
278 }
279
280 AL_API ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *values)
281 {
282 ALCcontext *Context;
283 ALCdevice *Device;
284 ALfilter *ALFilter;
285
286 switch(param)
287 {
288 case AL_FILTER_TYPE:
289 alGetFilteri(filter, param, values);
290 return;
291 }
292
293 Context = GetContextRef();
294 if(!Context) return;
295
296 Device = Context->Device;
297 LockFiltersRead(Device);
298 if((ALFilter=LookupFilter(Device, filter)) == NULL)
299 alSetError(Context, AL_INVALID_NAME);
300 else
301 {
302 /* Call the appropriate handler */
303 ALfilter_GetParamiv(ALFilter, Context, param, values);
304 }
305 UnlockFiltersRead(Device);
306
307 ALCcontext_DecRef(Context);
308 }
309
310 AL_API ALvoid AL_APIENTRY alGetFilterf(ALuint filter, ALenum param, ALfloat *value)
311 {
312 ALCcontext *Context;
313 ALCdevice *Device;
314 ALfilter *ALFilter;
315
316 Context = GetContextRef();
317 if(!Context) return;
318
319 Device = Context->Device;
320 LockFiltersRead(Device);
321 if((ALFilter=LookupFilter(Device, filter)) == NULL)
322 alSetError(Context, AL_INVALID_NAME);
323 else
324 {
325 /* Call the appropriate handler */
326 ALfilter_GetParamf(ALFilter, Context, param, value);
327 }
328 UnlockFiltersRead(Device);
329
330 ALCcontext_DecRef(Context);
331 }
332
333 AL_API ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *values)
334 {
335 ALCcontext *Context;
336 ALCdevice *Device;
337 ALfilter *ALFilter;
338
339 Context = GetContextRef();
340 if(!Context) return;
341
342 Device = Context->Device;
343 LockFiltersRead(Device);
344 if((ALFilter=LookupFilter(Device, filter)) == NULL)
345 alSetError(Context, AL_INVALID_NAME);
346 else
347 {
348 /* Call the appropriate handler */
349 ALfilter_GetParamfv(ALFilter, Context, param, values);
350 }
351 UnlockFiltersRead(Device);
352
353 ALCcontext_DecRef(Context);
354 }
355
356
357 void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat gain, ALfloat freq_mult, ALfloat rcpQ)
358 {
359 ALfloat alpha, sqrtgain_alpha_2;
360 ALfloat w0, sin_w0, cos_w0;
361 ALfloat a[3] = { 1.0f, 0.0f, 0.0f };
362 ALfloat b[3] = { 1.0f, 0.0f, 0.0f };
363
364 // Limit gain to -100dB
365 assert(gain > 0.00001f);
366
367 w0 = F_TAU * freq_mult;
368 sin_w0 = sinf(w0);
369 cos_w0 = cosf(w0);
370 alpha = sin_w0/2.0f * rcpQ;
371
372 /* Calculate filter coefficients depending on filter type */
373 switch(type)
374 {
375 case ALfilterType_HighShelf:
376 sqrtgain_alpha_2 = 2.0f * sqrtf(gain) * alpha;
377 b[0] = gain*((gain+1.0f) + (gain-1.0f)*cos_w0 + sqrtgain_alpha_2);
378 b[1] = -2.0f*gain*((gain-1.0f) + (gain+1.0f)*cos_w0 );
379 b[2] = gain*((gain+1.0f) + (gain-1.0f)*cos_w0 - sqrtgain_alpha_2);
380 a[0] = (gain+1.0f) - (gain-1.0f)*cos_w0 + sqrtgain_alpha_2;
381 a[1] = 2.0f* ((gain-1.0f) - (gain+1.0f)*cos_w0 );
382 a[2] = (gain+1.0f) - (gain-1.0f)*cos_w0 - sqrtgain_alpha_2;
383 break;
384 case ALfilterType_LowShelf:
385 sqrtgain_alpha_2 = 2.0f * sqrtf(gain) * alpha;
386 b[0] = gain*((gain+1.0f) - (gain-1.0f)*cos_w0 + sqrtgain_alpha_2);
387 b[1] = 2.0f*gain*((gain-1.0f) - (gain+1.0f)*cos_w0 );
388 b[2] = gain*((gain+1.0f) - (gain-1.0f)*cos_w0 - sqrtgain_alpha_2);
389 a[0] = (gain+1.0f) + (gain-1.0f)*cos_w0 + sqrtgain_alpha_2;
390 a[1] = -2.0f* ((gain-1.0f) + (gain+1.0f)*cos_w0 );
391 a[2] = (gain+1.0f) + (gain-1.0f)*cos_w0 - sqrtgain_alpha_2;
392 break;
393 case ALfilterType_Peaking:
394 gain = sqrtf(gain);
395 b[0] = 1.0f + alpha * gain;
396 b[1] = -2.0f * cos_w0;
397 b[2] = 1.0f - alpha * gain;
398 a[0] = 1.0f + alpha / gain;
399 a[1] = -2.0f * cos_w0;
400 a[2] = 1.0f - alpha / gain;
401 break;
402
403 case ALfilterType_LowPass:
404 b[0] = (1.0f - cos_w0) / 2.0f;
405 b[1] = 1.0f - cos_w0;
406 b[2] = (1.0f - cos_w0) / 2.0f;
407 a[0] = 1.0f + alpha;
408 a[1] = -2.0f * cos_w0;
409 a[2] = 1.0f - alpha;
410 break;
411 case ALfilterType_HighPass:
412 b[0] = (1.0f + cos_w0) / 2.0f;
413 b[1] = -(1.0f + cos_w0);
414 b[2] = (1.0f + cos_w0) / 2.0f;
415 a[0] = 1.0f + alpha;
416 a[1] = -2.0f * cos_w0;
417 a[2] = 1.0f - alpha;
418 break;
419 case ALfilterType_BandPass:
420 b[0] = alpha;
421 b[1] = 0;
422 b[2] = -alpha;
423 a[0] = 1.0f + alpha;
424 a[1] = -2.0f * cos_w0;
425 a[2] = 1.0f - alpha;
426 break;
427 }
428
429 filter->a1 = a[1] / a[0];
430 filter->a2 = a[2] / a[0];
431 filter->b0 = b[0] / a[0];
432 filter->b1 = b[1] / a[0];
433 filter->b2 = b[2] / a[0];
434 }
435
436
437 static void lp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
438 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
439 static void lp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
440 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
441 static void lp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
442 {
443 switch(param)
444 {
445 case AL_LOWPASS_GAIN:
446 if(!(val >= AL_LOWPASS_MIN_GAIN && val <= AL_LOWPASS_MAX_GAIN))
447 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
448 filter->Gain = val;
449 break;
450
451 case AL_LOWPASS_GAINHF:
452 if(!(val >= AL_LOWPASS_MIN_GAINHF && val <= AL_LOWPASS_MAX_GAINHF))
453 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
454 filter->GainHF = val;
455 break;
456
457 default:
458 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
459 }
460 }
461 static void lp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
462 {
463 lp_SetParamf(filter, context, param, vals[0]);
464 }
465
466 static void lp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
467 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
468 static void lp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
469 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
470 static void lp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
471 {
472 switch(param)
473 {
474 case AL_LOWPASS_GAIN:
475 *val = filter->Gain;
476 break;
477
478 case AL_LOWPASS_GAINHF:
479 *val = filter->GainHF;
480 break;
481
482 default:
483 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
484 }
485 }
486 static void lp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
487 {
488 lp_GetParamf(filter, context, param, vals);
489 }
490
491
492 static void hp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
493 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
494 static void hp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
495 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
496 static void hp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
497 {
498 switch(param)
499 {
500 case AL_HIGHPASS_GAIN:
501 if(!(val >= AL_HIGHPASS_MIN_GAIN && val <= AL_HIGHPASS_MAX_GAIN))
502 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
503 filter->Gain = val;
504 break;
505
506 case AL_HIGHPASS_GAINLF:
507 if(!(val >= AL_HIGHPASS_MIN_GAINLF && val <= AL_HIGHPASS_MAX_GAINLF))
508 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
509 filter->GainLF = val;
510 break;
511
512 default:
513 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
514 }
515 }
516 static void hp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
517 {
518 hp_SetParamf(filter, context, param, vals[0]);
519 }
520
521 static void hp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
522 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
523 static void hp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
524 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
525 static void hp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
526 {
527 switch(param)
528 {
529 case AL_HIGHPASS_GAIN:
530 *val = filter->Gain;
531 break;
532
533 case AL_HIGHPASS_GAINLF:
534 *val = filter->GainLF;
535 break;
536
537 default:
538 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
539 }
540 }
541 static void hp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
542 {
543 hp_GetParamf(filter, context, param, vals);
544 }
545
546
547 static void bp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
548 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
549 static void bp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
550 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
551 static void bp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val)
552 {
553 switch(param)
554 {
555 case AL_BANDPASS_GAIN:
556 if(!(val >= AL_BANDPASS_MIN_GAIN && val <= AL_BANDPASS_MAX_GAIN))
557 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
558 filter->Gain = val;
559 break;
560
561 case AL_BANDPASS_GAINHF:
562 if(!(val >= AL_BANDPASS_MIN_GAINHF && val <= AL_BANDPASS_MAX_GAINHF))
563 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
564 filter->GainHF = val;
565 break;
566
567 case AL_BANDPASS_GAINLF:
568 if(!(val >= AL_BANDPASS_MIN_GAINLF && val <= AL_BANDPASS_MAX_GAINLF))
569 SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE);
570 filter->GainLF = val;
571 break;
572
573 default:
574 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
575 }
576 }
577 static void bp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals)
578 {
579 bp_SetParamf(filter, context, param, vals[0]);
580 }
581
582 static void bp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
583 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
584 static void bp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
585 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
586 static void bp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val)
587 {
588 switch(param)
589 {
590 case AL_BANDPASS_GAIN:
591 *val = filter->Gain;
592 break;
593
594 case AL_BANDPASS_GAINHF:
595 *val = filter->GainHF;
596 break;
597
598 case AL_BANDPASS_GAINLF:
599 *val = filter->GainLF;
600 break;
601
602 default:
603 SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM);
604 }
605 }
606 static void bp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals)
607 {
608 bp_GetParamf(filter, context, param, vals);
609 }
610
611
612 static void null_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val))
613 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
614 static void null_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals))
615 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
616 static void null_SetParamf(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat UNUSED(val))
617 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
618 static void null_SetParamfv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALfloat *UNUSED(vals))
619 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
620
621 static void null_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val))
622 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
623 static void null_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals))
624 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
625 static void null_GetParamf(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat *UNUSED(val))
626 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
627 static void null_GetParamfv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALfloat *UNUSED(vals))
628 { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); }
629
630
631 ALvoid ReleaseALFilters(ALCdevice *device)
632 {
633 ALsizei i;
634 for(i = 0;i < device->FilterMap.size;i++)
635 {
636 ALfilter *temp = device->FilterMap.values[i];
637 device->FilterMap.values[i] = NULL;
638
639 // Release filter structure
640 FreeThunkEntry(temp->id);
641 memset(temp, 0, sizeof(ALfilter));
642 al_free(temp);
643 }
644 }
645
646
647 static void InitFilterParams(ALfilter *filter, ALenum type)
648 {
649 if(type == AL_FILTER_LOWPASS)
650 {
651 filter->Gain = AL_LOWPASS_DEFAULT_GAIN;
652 filter->GainHF = AL_LOWPASS_DEFAULT_GAINHF;
653 filter->HFReference = LOWPASSFREQREF;
654 filter->GainLF = 1.0f;
655 filter->LFReference = HIGHPASSFREQREF;
656
657 filter->SetParami = lp_SetParami;
658 filter->SetParamiv = lp_SetParamiv;
659 filter->SetParamf = lp_SetParamf;
660 filter->SetParamfv = lp_SetParamfv;
661 filter->GetParami = lp_GetParami;
662 filter->GetParamiv = lp_GetParamiv;
663 filter->GetParamf = lp_GetParamf;
664 filter->GetParamfv = lp_GetParamfv;
665 }
666 else if(type == AL_FILTER_HIGHPASS)
667 {
668 filter->Gain = AL_HIGHPASS_DEFAULT_GAIN;
669 filter->GainHF = 1.0f;
670 filter->HFReference = LOWPASSFREQREF;
671 filter->GainLF = AL_HIGHPASS_DEFAULT_GAINLF;
672 filter->LFReference = HIGHPASSFREQREF;
673
674 filter->SetParami = hp_SetParami;
675 filter->SetParamiv = hp_SetParamiv;
676 filter->SetParamf = hp_SetParamf;
677 filter->SetParamfv = hp_SetParamfv;
678 filter->GetParami = hp_GetParami;
679 filter->GetParamiv = hp_GetParamiv;
680 filter->GetParamf = hp_GetParamf;
681 filter->GetParamfv = hp_GetParamfv;
682 }
683 else if(type == AL_FILTER_BANDPASS)
684 {
685 filter->Gain = AL_BANDPASS_DEFAULT_GAIN;
686 filter->GainHF = AL_BANDPASS_DEFAULT_GAINHF;
687 filter->HFReference = LOWPASSFREQREF;
688 filter->GainLF = AL_BANDPASS_DEFAULT_GAINLF;
689 filter->LFReference = HIGHPASSFREQREF;
690
691 filter->SetParami = bp_SetParami;
692 filter->SetParamiv = bp_SetParamiv;
693 filter->SetParamf = bp_SetParamf;
694 filter->SetParamfv = bp_SetParamfv;
695 filter->GetParami = bp_GetParami;
696 filter->GetParamiv = bp_GetParamiv;
697 filter->GetParamf = bp_GetParamf;
698 filter->GetParamfv = bp_GetParamfv;
699 }
700 else
701 {
702 filter->Gain = 1.0f;
703 filter->GainHF = 1.0f;
704 filter->HFReference = LOWPASSFREQREF;
705 filter->GainLF = 1.0f;
706 filter->LFReference = HIGHPASSFREQREF;
707
708 filter->SetParami = null_SetParami;
709 filter->SetParamiv = null_SetParamiv;
710 filter->SetParamf = null_SetParamf;
711 filter->SetParamfv = null_SetParamfv;
712 filter->GetParami = null_GetParami;
713 filter->GetParamiv = null_GetParamiv;
714 filter->GetParamf = null_GetParamf;
715 filter->GetParamfv = null_GetParamfv;
716 }
717 filter->type = type;
718 }
Software OpenAL implementation