1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
|
#ifndef AL_MAIN_H
#define AL_MAIN_H
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <stdarg.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_INTRIN_H
#include <intrin.h>
#endif
#include "AL/al.h"
#include "AL/alc.h"
#include "AL/alext.h"
#include "inprogext.h"
#include "logging.h"
#include "polymorphism.h"
#include "static_assert.h"
#include "align.h"
#include "atomic.h"
#include "vector.h"
#include "alstring.h"
#include "almalloc.h"
#include "threads.h"
#if defined(_WIN64)
#define SZFMT "%I64u"
#elif defined(_WIN32)
#define SZFMT "%u"
#else
#define SZFMT "%zu"
#endif
#ifdef __GNUC__
#define LIKELY(x) __builtin_expect(!!(x), !0)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
#define LIKELY(x) (!!(x))
#define UNLIKELY(x) (!!(x))
#endif
#ifndef UINT64_MAX
#define UINT64_MAX U64(18446744073709551615)
#endif
#ifndef UNUSED
#if defined(__cplusplus)
#define UNUSED(x)
#elif defined(__GNUC__)
#define UNUSED(x) UNUSED_##x __attribute__((unused))
#elif defined(__LCLINT__)
#define UNUSED(x) /*@unused@*/ x
#else
#define UNUSED(x) x
#endif
#endif
/* Calculates the size of a struct with N elements of a flexible array member.
* GCC and Clang allow offsetof(Type, fam[N]) for this, but MSVC seems to have
* trouble, so a bit more verbose workaround is needed.
*/
#define FAM_SIZE(T, M, N) (offsetof(T, M) + sizeof(((T*)NULL)->M[0])*(N))
#ifdef __cplusplus
extern "C" {
#endif
typedef ALint64SOFT ALint64;
typedef ALuint64SOFT ALuint64;
#ifndef U64
#if defined(_MSC_VER)
#define U64(x) ((ALuint64)(x##ui64))
#elif SIZEOF_LONG == 8
#define U64(x) ((ALuint64)(x##ul))
#elif SIZEOF_LONG_LONG == 8
#define U64(x) ((ALuint64)(x##ull))
#endif
#endif
/* Define a CTZ64 macro (count trailing zeros, for 64-bit integers). The result
* is *UNDEFINED* if the value is 0.
*/
#ifdef __GNUC__
#if SIZEOF_LONG == 8
#define CTZ64(x) __builtin_ctzl(x)
#else
#define CTZ64(x) __builtin_ctzll(x)
#endif
#elif defined(HAVE_BITSCANFORWARD64_INTRINSIC)
inline int msvc64_ctz64(ALuint64 v)
{
unsigned long idx = 64;
_BitScanForward64(&idx, v);
return (int)idx;
}
#define CTZ64(x) msvc64_ctz64(x)
#elif defined(HAVE_BITSCANFORWARD_INTRINSIC)
inline int msvc_ctz64(ALuint64 v)
{
unsigned long idx = 64;
if(!_BitScanForward(&idx, v&0xffffffff))
{
if(_BitScanForward(&idx, v>>32))
idx += 32;
}
return (int)idx;
}
#define CTZ64(x) msvc_ctz64(x)
#else
/* There be black magics here. The popcnt64 method is derived from
* https://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel
* while the ctz-utilizing-popcnt algorithm is shown here
* http://www.hackersdelight.org/hdcodetxt/ntz.c.txt
* as the ntz2 variant. These likely aren't the most efficient methods, but
* they're good enough if the GCC or MSVC intrinsics aren't available.
*/
inline int fallback_popcnt64(ALuint64 v)
{
v = v - ((v >> 1) & U64(0x5555555555555555));
v = (v & U64(0x3333333333333333)) + ((v >> 2) & U64(0x3333333333333333));
v = (v + (v >> 4)) & U64(0x0f0f0f0f0f0f0f0f);
return (int)((v * U64(0x0101010101010101)) >> 56);
}
inline int fallback_ctz64(ALuint64 value)
{
return fallback_popcnt64(~value & (value - 1));
}
#define CTZ64(x) fallback_ctz64(x)
#endif
static const union {
ALuint u;
ALubyte b[sizeof(ALuint)];
} EndianTest = { 1 };
#define IS_LITTLE_ENDIAN (EndianTest.b[0] == 1)
#define COUNTOF(x) (sizeof(x) / sizeof(0[x]))
struct ll_ringbuffer;
struct Hrtf;
struct HrtfEntry;
struct DirectHrtfState;
struct FrontStablizer;
struct Compressor;
struct ALCbackend;
struct ALbuffer;
struct ALeffect;
struct ALfilter;
struct ALsource;
struct ALcontextProps;
struct ALlistenerProps;
struct ALvoiceProps;
struct ALeffectslotProps;
#define DEFAULT_OUTPUT_RATE (44100)
#define MIN_OUTPUT_RATE (8000)
/* Find the next power-of-2 for non-power-of-2 numbers. */
inline ALuint NextPowerOf2(ALuint value)
{
if(value > 0)
{
value--;
value |= value>>1;
value |= value>>2;
value |= value>>4;
value |= value>>8;
value |= value>>16;
}
return value+1;
}
/** Round up a value to the next multiple. */
inline size_t RoundUp(size_t value, size_t r)
{
value += r-1;
return value - (value%r);
}
/* Fast float-to-int conversion. Assumes the FPU is already in round-to-zero
* mode. */
inline ALint fastf2i(ALfloat f)
{
#ifdef HAVE_LRINTF
return lrintf(f);
#elif defined(_MSC_VER) && defined(_M_IX86)
ALint i;
__asm fld f
__asm fistp i
return i;
#else
return (ALint)f;
#endif
}
enum DevProbe {
ALL_DEVICE_PROBE,
CAPTURE_DEVICE_PROBE
};
enum DistanceModel {
InverseDistanceClamped = AL_INVERSE_DISTANCE_CLAMPED,
LinearDistanceClamped = AL_LINEAR_DISTANCE_CLAMPED,
ExponentDistanceClamped = AL_EXPONENT_DISTANCE_CLAMPED,
InverseDistance = AL_INVERSE_DISTANCE,
LinearDistance = AL_LINEAR_DISTANCE,
ExponentDistance = AL_EXPONENT_DISTANCE,
DisableDistance = AL_NONE,
DefaultDistanceModel = InverseDistanceClamped
};
enum Channel {
FrontLeft = 0,
FrontRight,
FrontCenter,
LFE,
BackLeft,
BackRight,
BackCenter,
SideLeft,
SideRight,
UpperFrontLeft,
UpperFrontRight,
UpperBackLeft,
UpperBackRight,
LowerFrontLeft,
LowerFrontRight,
LowerBackLeft,
LowerBackRight,
Aux0,
Aux1,
Aux2,
Aux3,
Aux4,
Aux5,
Aux6,
Aux7,
Aux8,
Aux9,
Aux10,
Aux11,
Aux12,
Aux13,
Aux14,
Aux15,
InvalidChannel
};
/* Device formats */
enum DevFmtType {
DevFmtByte = ALC_BYTE_SOFT,
DevFmtUByte = ALC_UNSIGNED_BYTE_SOFT,
DevFmtShort = ALC_SHORT_SOFT,
DevFmtUShort = ALC_UNSIGNED_SHORT_SOFT,
DevFmtInt = ALC_INT_SOFT,
DevFmtUInt = ALC_UNSIGNED_INT_SOFT,
DevFmtFloat = ALC_FLOAT_SOFT,
DevFmtTypeDefault = DevFmtFloat
};
enum DevFmtChannels {
DevFmtMono = ALC_MONO_SOFT,
DevFmtStereo = ALC_STEREO_SOFT,
DevFmtQuad = ALC_QUAD_SOFT,
DevFmtX51 = ALC_5POINT1_SOFT,
DevFmtX61 = ALC_6POINT1_SOFT,
DevFmtX71 = ALC_7POINT1_SOFT,
DevFmtAmbi3D = ALC_BFORMAT3D_SOFT,
/* Similar to 5.1, except using rear channels instead of sides */
DevFmtX51Rear = 0x80000000,
DevFmtChannelsDefault = DevFmtStereo
};
#define MAX_OUTPUT_CHANNELS (16)
ALsizei BytesFromDevFmt(enum DevFmtType type);
ALsizei ChannelsFromDevFmt(enum DevFmtChannels chans, ALsizei ambiorder);
inline ALsizei FrameSizeFromDevFmt(enum DevFmtChannels chans, enum DevFmtType type, ALsizei ambiorder)
{
return ChannelsFromDevFmt(chans, ambiorder) * BytesFromDevFmt(type);
}
enum AmbiLayout {
AmbiLayout_FuMa = ALC_FUMA_SOFT, /* FuMa channel order */
AmbiLayout_ACN = ALC_ACN_SOFT, /* ACN channel order */
AmbiLayout_Default = AmbiLayout_ACN
};
enum AmbiNorm {
AmbiNorm_FuMa = ALC_FUMA_SOFT, /* FuMa normalization */
AmbiNorm_SN3D = ALC_SN3D_SOFT, /* SN3D normalization */
AmbiNorm_N3D = ALC_N3D_SOFT, /* N3D normalization */
AmbiNorm_Default = AmbiNorm_SN3D
};
enum DeviceType {
Playback,
Capture,
Loopback
};
enum RenderMode {
NormalRender,
StereoPair,
HrtfRender
};
/* The maximum number of Ambisonics coefficients. For a given order (o), the
* size needed will be (o+1)**2, thus zero-order has 1, first-order has 4,
* second-order has 9, third-order has 16, and fourth-order has 25.
*/
#define MAX_AMBI_ORDER 3
#define MAX_AMBI_COEFFS ((MAX_AMBI_ORDER+1) * (MAX_AMBI_ORDER+1))
/* A bitmask of ambisonic channels with height information. If none of these
* channels are used/needed, there's no height (e.g. with most surround sound
* speaker setups). This only specifies up to 4th order, which is the highest
* order a 32-bit mask value can specify (a 64-bit mask could handle up to 7th
* order). This is ACN ordering, with bit 0 being ACN 0, etc.
*/
#define AMBI_PERIPHONIC_MASK (0xfe7ce4)
/* The maximum number of Ambisonic coefficients for 2D (non-periphonic)
* representation. This is 2 per each order above zero-order, plus 1 for zero-
* order. Or simply, o*2 + 1.
*/
#define MAX_AMBI2D_COEFFS (MAX_AMBI_ORDER*2 + 1)
typedef ALfloat ChannelConfig[MAX_AMBI_COEFFS];
typedef struct BFChannelConfig {
ALfloat Scale;
ALsizei Index;
} BFChannelConfig;
typedef union AmbiConfig {
/* Ambisonic coefficients for mixing to the dry buffer. */
ChannelConfig Coeffs[MAX_OUTPUT_CHANNELS];
/* Coefficient channel mapping for mixing to the dry buffer. */
BFChannelConfig Map[MAX_OUTPUT_CHANNELS];
} AmbiConfig;
typedef struct BufferSubList {
ALuint64 FreeMask;
struct ALbuffer *Buffers; /* 64 */
} BufferSubList;
TYPEDEF_VECTOR(BufferSubList, vector_BufferSubList)
typedef struct EffectSubList {
ALuint64 FreeMask;
struct ALeffect *Effects; /* 64 */
} EffectSubList;
TYPEDEF_VECTOR(EffectSubList, vector_EffectSubList)
typedef struct FilterSubList {
ALuint64 FreeMask;
struct ALfilter *Filters; /* 64 */
} FilterSubList;
TYPEDEF_VECTOR(FilterSubList, vector_FilterSubList)
typedef struct SourceSubList {
ALuint64 FreeMask;
struct ALsource *Sources; /* 64 */
} SourceSubList;
TYPEDEF_VECTOR(SourceSubList, vector_SourceSubList)
/* Effect slots are rather large, and apps aren't likely to have more than one
* or two (let alone 64), so hold them individually.
*/
typedef struct ALeffectslot *ALeffectslotPtr;
TYPEDEF_VECTOR(ALeffectslotPtr, vector_ALeffectslotPtr)
typedef struct EnumeratedHrtf {
al_string name;
struct HrtfEntry *hrtf;
} EnumeratedHrtf;
TYPEDEF_VECTOR(EnumeratedHrtf, vector_EnumeratedHrtf)
/* Maximum delay in samples for speaker distance compensation. */
#define MAX_DELAY_LENGTH 1024
typedef struct DistanceComp {
ALfloat Gain;
ALsizei Length; /* Valid range is [0...MAX_DELAY_LENGTH). */
ALfloat *Buffer;
} DistanceComp;
/* Size for temporary storage of buffer data, in ALfloats. Larger values need
* more memory, while smaller values may need more iterations. The value needs
* to be a sensible size, however, as it constrains the max stepping value used
* for mixing, as well as the maximum number of samples per mixing iteration.
*/
#define BUFFERSIZE 2048
typedef struct DryMixParams {
AmbiConfig Ambi;
/* Number of coefficients in each Ambi.Coeffs to mix together (4 for first-
* order, 9 for second-order, etc). If the count is 0, Ambi.Map is used
* instead to map each output to a coefficient index.
*/
ALsizei CoeffCount;
ALfloat (*Buffer)[BUFFERSIZE];
ALsizei NumChannels;
ALsizei NumChannelsPerOrder[MAX_AMBI_ORDER+1];
} DryMixParams;
typedef struct BFMixParams {
AmbiConfig Ambi;
/* Will only be 4 or 0. */
ALsizei CoeffCount;
ALfloat (*Buffer)[BUFFERSIZE];
ALsizei NumChannels;
} BFMixParams;
typedef struct RealMixParams {
enum Channel ChannelName[MAX_OUTPUT_CHANNELS];
ALfloat (*Buffer)[BUFFERSIZE];
ALsizei NumChannels;
} RealMixParams;
typedef void (*POSTPROCESS)(ALCdevice *device, ALsizei SamplesToDo);
struct ALCdevice_struct {
RefCount ref;
ATOMIC(ALenum) Connected;
enum DeviceType Type;
ALuint Frequency;
ALuint UpdateSize;
ALuint NumUpdates;
enum DevFmtChannels FmtChans;
enum DevFmtType FmtType;
ALboolean IsHeadphones;
ALsizei AmbiOrder;
/* For DevFmtAmbi* output only, specifies the channel order and
* normalization.
*/
enum AmbiLayout AmbiLayout;
enum AmbiNorm AmbiScale;
al_string DeviceName;
ATOMIC(ALCenum) LastError;
// Maximum number of sources that can be created
ALuint SourcesMax;
// Maximum number of slots that can be created
ALuint AuxiliaryEffectSlotMax;
ALCuint NumMonoSources;
ALCuint NumStereoSources;
ALsizei NumAuxSends;
// Map of Buffers for this device
vector_BufferSubList BufferList;
almtx_t BufferLock;
// Map of Effects for this device
vector_EffectSubList EffectList;
almtx_t EffectLock;
// Map of Filters for this device
vector_FilterSubList FilterList;
almtx_t FilterLock;
POSTPROCESS PostProcess;
/* HRTF state and info */
struct DirectHrtfState *Hrtf;
al_string HrtfName;
struct Hrtf *HrtfHandle;
vector_EnumeratedHrtf HrtfList;
ALCenum HrtfStatus;
/* UHJ encoder state */
struct Uhj2Encoder *Uhj_Encoder;
/* High quality Ambisonic decoder */
struct BFormatDec *AmbiDecoder;
/* Stereo-to-binaural filter */
struct bs2b *Bs2b;
/* First-order ambisonic upsampler for higher-order output */
struct AmbiUpsampler *AmbiUp;
/* Rendering mode. */
enum RenderMode Render_Mode;
// Device flags
ALuint Flags;
ALuint64 ClockBase;
ALuint SamplesDone;
/* Temp storage used for mixer processing. */
alignas(16) ALfloat TempBuffer[4][BUFFERSIZE];
/* The "dry" path corresponds to the main output. */
DryMixParams Dry;
/* First-order ambisonics output, to be upsampled to the dry buffer if different. */
BFMixParams FOAOut;
/* "Real" output, which will be written to the device buffer. May alias the
* dry buffer.
*/
RealMixParams RealOut;
struct FrontStablizer *Stablizer;
struct Compressor *Limiter;
/* The average speaker distance as determined by the ambdec configuration
* (or alternatively, by the NFC-HOA reference delay). Only used for NFC.
*/
ALfloat AvgSpeakerDist;
/* Delay buffers used to compensate for speaker distances. */
DistanceComp ChannelDelay[MAX_OUTPUT_CHANNELS];
/* Dithering control. */
ALfloat DitherDepth;
ALuint DitherSeed;
/* Running count of the mixer invocations, in 31.1 fixed point. This
* actually increments *twice* when mixing, first at the start and then at
* the end, so the bottom bit indicates if the device is currently mixing
* and the upper bits indicates how many mixes have been done.
*/
RefCount MixCount;
// Contexts created on this device
ATOMIC(ALCcontext*) ContextList;
almtx_t BackendLock;
struct ALCbackend *Backend;
ATOMIC(ALCdevice*) next;
};
// Frequency was requested by the app or config file
#define DEVICE_FREQUENCY_REQUEST (1u<<1)
// Channel configuration was requested by the config file
#define DEVICE_CHANNELS_REQUEST (1u<<2)
// Sample type was requested by the config file
#define DEVICE_SAMPLE_TYPE_REQUEST (1u<<3)
// Specifies if the DSP is paused at user request
#define DEVICE_PAUSED (1u<<30)
// Specifies if the device is currently running
#define DEVICE_RUNNING (1u<<31)
/* Nanosecond resolution for the device clock time. */
#define DEVICE_CLOCK_RES U64(1000000000)
/* Must be less than 15 characters (16 including terminating null) for
* compatibility with pthread_setname_np limitations. */
#define MIXER_THREAD_NAME "alsoft-mixer"
#define RECORD_THREAD_NAME "alsoft-record"
enum {
EventType_SourceStateChange = 1<<0,
EventType_BufferCompleted = 1<<1,
EventType_Error = 1<<2,
EventType_Performance = 1<<3,
EventType_Deprecated = 1<<4,
EventType_Disconnected = 1<<5,
};
typedef struct AsyncEvent {
unsigned int EnumType;
ALenum Type;
ALuint ObjectId;
ALuint Param;
ALchar Message[1008];
} AsyncEvent;
struct ALCcontext_struct {
RefCount ref;
struct ALlistener *Listener;
vector_SourceSubList SourceList;
ALuint NumSources;
almtx_t SourceLock;
vector_ALeffectslotPtr EffectSlotList;
almtx_t EffectSlotLock;
ATOMIC(ALenum) LastError;
enum DistanceModel DistanceModel;
ALboolean SourceDistanceModel;
ALfloat DopplerFactor;
ALfloat DopplerVelocity;
ALfloat SpeedOfSound;
ALfloat MetersPerUnit;
ATOMIC_FLAG PropsClean;
ATOMIC(ALenum) DeferUpdates;
almtx_t PropLock;
/* Counter for the pre-mixing updates, in 31.1 fixed point (lowest bit
* indicates if updates are currently happening).
*/
RefCount UpdateCount;
ATOMIC(ALenum) HoldUpdates;
ALfloat GainBoost;
ATOMIC(struct ALcontextProps*) Update;
/* Linked lists of unused property containers, free to use for future
* updates.
*/
ATOMIC(struct ALcontextProps*) FreeContextProps;
ATOMIC(struct ALlistenerProps*) FreeListenerProps;
ATOMIC(struct ALvoiceProps*) FreeVoiceProps;
ATOMIC(struct ALeffectslotProps*) FreeEffectslotProps;
struct ALvoice **Voices;
ALsizei VoiceCount;
ALsizei MaxVoices;
ATOMIC(struct ALeffectslotArray*) ActiveAuxSlots;
almtx_t EventThrdLock;
althrd_t EventThread;
alsem_t EventSem;
struct ll_ringbuffer *AsyncEvents;
ATOMIC(ALbitfieldSOFT) EnabledEvts;
almtx_t EventCbLock;
ALEVENTPROCSOFT EventCb;
void *EventParam;
/* Default effect slot */
struct ALeffectslot *DefaultSlot;
ALCdevice *Device;
const ALCchar *ExtensionList;
ATOMIC(ALCcontext*) next;
/* Memory space used by the listener (and possibly default effect slot) */
alignas(16) ALCbyte _listener_mem[];
};
ALCcontext *GetContextRef(void);
void ALCcontext_DecRef(ALCcontext *context);
void ALCcontext_DeferUpdates(ALCcontext *context);
void ALCcontext_ProcessUpdates(ALCcontext *context);
void AllocateVoices(ALCcontext *context, ALsizei num_voices, ALsizei old_sends);
void AppendAllDevicesList(const ALCchar *name);
void AppendCaptureDeviceList(const ALCchar *name);
extern ALint RTPrioLevel;
void SetRTPriority(void);
void SetDefaultChannelOrder(ALCdevice *device);
void SetDefaultWFXChannelOrder(ALCdevice *device);
const ALCchar *DevFmtTypeString(enum DevFmtType type);
const ALCchar *DevFmtChannelsString(enum DevFmtChannels chans);
inline ALint GetChannelIndex(const enum Channel names[MAX_OUTPUT_CHANNELS], enum Channel chan)
{
ALint i;
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
{
if(names[i] == chan)
return i;
}
return -1;
}
/**
* GetChannelIdxByName
*
* Returns the index for the given channel name (e.g. FrontCenter), or -1 if it
* doesn't exist.
*/
inline ALint GetChannelIdxByName(const RealMixParams *real, enum Channel chan)
{ return GetChannelIndex(real->ChannelName, chan); }
inline void LockBufferList(ALCdevice *device) { almtx_lock(&device->BufferLock); }
inline void UnlockBufferList(ALCdevice *device) { almtx_unlock(&device->BufferLock); }
inline void LockEffectList(ALCdevice *device) { almtx_lock(&device->EffectLock); }
inline void UnlockEffectList(ALCdevice *device) { almtx_unlock(&device->EffectLock); }
inline void LockFilterList(ALCdevice *device) { almtx_lock(&device->FilterLock); }
inline void UnlockFilterList(ALCdevice *device) { almtx_unlock(&device->FilterLock); }
inline void LockEffectSlotList(ALCcontext *context)
{ almtx_lock(&context->EffectSlotLock); }
inline void UnlockEffectSlotList(ALCcontext *context)
{ almtx_unlock(&context->EffectSlotLock); }
vector_al_string SearchDataFiles(const char *match, const char *subdir);
#ifdef __cplusplus
}
#endif
#endif
|