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
|
#ifndef _ALU_H_
#define _ALU_H_
#include "alMain.h"
#include <limits.h>
#include <math.h>
#ifdef HAVE_FLOAT_H
#include <float.h>
#endif
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>
#endif
#define F_PI (3.14159265358979323846f) /* pi */
#define F_PI_2 (1.57079632679489661923f) /* pi/2 */
#ifndef HAVE_POWF
static __inline float powf(float x, float y)
{ return (float)pow(x, y); }
#endif
#ifndef HAVE_SQRTF
static __inline float sqrtf(float x)
{ return (float)sqrt(x); }
#endif
#ifndef HAVE_COSF
static __inline float cosf(float x)
{ return (float)cos(x); }
#endif
#ifndef HAVE_SINF
static __inline float sinf(float x)
{ return (float)sin(x); }
#endif
#ifndef HAVE_ACOSF
static __inline float acosf(float x)
{ return (float)acos(x); }
#endif
#ifndef HAVE_ASINF
static __inline float asinf(float x)
{ return (float)asin(x); }
#endif
#ifndef HAVE_ATANF
static __inline float atanf(float x)
{ return (float)atan(x); }
#endif
#ifndef HAVE_ATAN2F
static __inline float atan2f(float x, float y)
{ return (float)atan2(x, y); }
#endif
#ifndef HAVE_FABSF
static __inline float fabsf(float x)
{ return (float)fabs(x); }
#endif
#ifndef HAVE_LOG10F
static __inline float log10f(float x)
{ return (float)log10(x); }
#endif
#ifndef HAVE_FLOORF
static __inline float floorf(float x)
{ return (float)floor(x); }
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct ALsource;
struct ALbuffer;
struct DirectParams;
struct SendParams;
typedef ALvoid (*DryMixerFunc)(struct ALsource *self, ALCdevice *Device,
struct DirectParams *params,
const ALfloat *RESTRICT data, ALuint srcchan,
ALuint OutPos, ALuint SamplesToDo,
ALuint BufferSize);
typedef ALvoid (*WetMixerFunc)(struct SendParams *params,
const ALfloat *RESTRICT data,
ALuint OutPos, ALuint SamplesToDo,
ALuint BufferSize);
#define SPEEDOFSOUNDMETRESPERSEC (343.3f)
#define AIRABSORBGAINHF (0.99426f) /* -0.05dB */
#define FRACTIONBITS (14)
#define FRACTIONONE (1<<FRACTIONBITS)
#define FRACTIONMASK (FRACTIONONE-1)
static __inline ALfloat minf(ALfloat a, ALfloat b)
{ return ((a > b) ? b : a); }
static __inline ALfloat maxf(ALfloat a, ALfloat b)
{ return ((a > b) ? a : b); }
static __inline ALfloat clampf(ALfloat val, ALfloat min, ALfloat max)
{ return minf(max, maxf(min, val)); }
static __inline ALuint minu(ALuint a, ALuint b)
{ return ((a > b) ? b : a); }
static __inline ALuint maxu(ALuint a, ALuint b)
{ return ((a > b) ? a : b); }
static __inline ALuint clampu(ALuint val, ALuint min, ALuint max)
{ return minu(max, maxu(min, val)); }
static __inline ALint mini(ALint a, ALint b)
{ return ((a > b) ? b : a); }
static __inline ALint maxi(ALint a, ALint b)
{ return ((a > b) ? a : b); }
static __inline ALint clampi(ALint val, ALint min, ALint max)
{ return mini(max, maxi(min, val)); }
static __inline ALint64 mini64(ALint64 a, ALint64 b)
{ return ((a > b) ? b : a); }
static __inline ALint64 maxi64(ALint64 a, ALint64 b)
{ return ((a > b) ? a : b); }
static __inline ALint64 clampi64(ALint64 val, ALint64 min, ALint64 max)
{ return mini64(max, maxi64(min, val)); }
static __inline ALuint64 minu64(ALuint64 a, ALuint64 b)
{ return ((a > b) ? b : a); }
static __inline ALuint64 maxu64(ALuint64 a, ALuint64 b)
{ return ((a > b) ? a : b); }
static __inline ALuint64 clampu64(ALuint64 val, ALuint64 min, ALuint64 max)
{ return minu64(max, maxu64(min, val)); }
static __inline ALfloat lerp(ALfloat val1, ALfloat val2, ALfloat mu)
{
return val1 + (val2-val1)*mu;
}
static __inline ALfloat cubic(ALfloat val0, ALfloat val1, ALfloat val2, ALfloat val3, ALfloat mu)
{
ALfloat mu2 = mu*mu;
ALfloat a0 = -0.5f*val0 + 1.5f*val1 + -1.5f*val2 + 0.5f*val3;
ALfloat a1 = val0 + -2.5f*val1 + 2.0f*val2 + -0.5f*val3;
ALfloat a2 = -0.5f*val0 + 0.5f*val2;
ALfloat a3 = val1;
return a0*mu*mu2 + a1*mu2 + a2*mu + a3;
}
static __inline void aluCrossproduct(const ALfloat *inVector1, const ALfloat *inVector2, ALfloat *outVector)
{
outVector[0] = inVector1[1]*inVector2[2] - inVector1[2]*inVector2[1];
outVector[1] = inVector1[2]*inVector2[0] - inVector1[0]*inVector2[2];
outVector[2] = inVector1[0]*inVector2[1] - inVector1[1]*inVector2[0];
}
static __inline ALfloat aluDotproduct(const ALfloat *inVector1, const ALfloat *inVector2)
{
return inVector1[0]*inVector2[0] + inVector1[1]*inVector2[1] +
inVector1[2]*inVector2[2];
}
static __inline void aluNormalize(ALfloat *inVector)
{
ALfloat lengthsqr = aluDotproduct(inVector, inVector);
if(lengthsqr > 0.0f)
{
ALfloat inv_length = 1.0f/sqrtf(lengthsqr);
inVector[0] *= inv_length;
inVector[1] *= inv_length;
inVector[2] *= inv_length;
}
}
ALvoid aluInitPanning(ALCdevice *Device);
ALvoid ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat hwidth, ALfloat ingain, ALfloat *gains);
ALvoid CalcSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
ALvoid CalcNonAttnSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
ALvoid MixSource(struct ALsource *Source, ALCdevice *Device, ALuint SamplesToDo);
ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size);
ALvoid aluHandleDisconnect(ALCdevice *device);
extern ALfloat ConeScale;
extern ALfloat ZScale;
#ifdef __cplusplus
}
#endif
#endif
|
