mirror of
https://github.com/DrBeef/JKXR.git
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4597b03873
Opens in Android Studio but haven't even tried to build it yet (it won't.. I know that much!)
313 lines
8.6 KiB
C
313 lines
8.6 KiB
C
#ifndef _ALU_H_
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#define _ALU_H_
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "AL/alext.h"
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#include <limits.h>
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#include <math.h>
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#ifdef HAVE_FLOAT_H
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#include <float.h>
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/* HACK: Seems cross-compiling with MinGW includes the wrong float.h, which
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* doesn't define Windows' _controlfp and related macros */
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#if defined(__MINGW32__) && !defined(_RC_CHOP)
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/* Control word masks for unMask */
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#define _MCW_EM 0x0008001F /* Error masks */
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#define _MCW_IC 0x00040000 /* Infinity */
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#define _MCW_RC 0x00000300 /* Rounding */
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#define _MCW_PC 0x00030000 /* Precision */
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/* Control word values for unNew (use with related unMask above) */
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#define _EM_INVALID 0x00000010
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#define _EM_DENORMAL 0x00080000
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#define _EM_ZERODIVIDE 0x00000008
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#define _EM_OVERFLOW 0x00000004
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#define _EM_UNDERFLOW 0x00000002
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#define _EM_INEXACT 0x00000001
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#define _IC_AFFINE 0x00040000
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#define _IC_PROJECTIVE 0x00000000
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#define _RC_CHOP 0x00000300
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#define _RC_UP 0x00000200
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#define _RC_DOWN 0x00000100
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#define _RC_NEAR 0x00000000
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#define _PC_24 0x00020000
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#define _PC_53 0x00010000
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#define _PC_64 0x00000000
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_CRTIMP unsigned int __cdecl __MINGW_NOTHROW _controlfp (unsigned int unNew, unsigned int unMask);
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#endif
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#endif
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#ifdef HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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#define F_PI (3.14159265358979323846f) /* pi */
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#define F_PI_2 (1.57079632679489661923f) /* pi/2 */
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#ifdef HAVE_POWF
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#define aluPow(x,y) (powf((x),(y)))
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#else
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#define aluPow(x,y) ((ALfloat)pow((double)(x),(double)(y)))
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#endif
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#ifdef HAVE_SQRTF
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#define aluSqrt(x) (sqrtf((x)))
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#else
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#define aluSqrt(x) ((ALfloat)sqrt((double)(x)))
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#endif
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#ifdef HAVE_COSF
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#define aluCos(x) (cosf((x)))
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#else
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#define aluCos(x) ((ALfloat)cos((double)(x)))
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#endif
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#ifdef HAVE_SINF
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#define aluSin(x) (sinf((x)))
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#else
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#define aluSin(x) ((ALfloat)sin((double)(x)))
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#endif
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#ifdef HAVE_ACOSF
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#define aluAcos(x) (acosf((x)))
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#else
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#define aluAcos(x) ((ALfloat)acos((double)(x)))
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#endif
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#ifdef HAVE_ASINF
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#define aluAsin(x) (asinf((x)))
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#else
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#define aluAsin(x) ((ALfloat)asin((double)(x)))
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#endif
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#ifdef HAVE_ATANF
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#define aluAtan(x) (atanf((x)))
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#else
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#define aluAtan(x) ((ALfloat)atan((double)(x)))
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#endif
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#ifdef HAVE_ATAN2F
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#define aluAtan2(x,y) (atan2f((x),(y)))
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#else
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#define aluAtan2(x,y) ((ALfloat)atan2((double)(x),(double)(y)))
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#endif
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#ifdef HAVE_FABSF
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#define aluFabs(x) (fabsf((x)))
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#else
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#define aluFabs(x) ((ALfloat)fabs((double)(x)))
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#endif
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#ifdef HAVE_LOG10F
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#define aluLog10(x) (log10f((x)))
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#else
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#define aluLog10(x) ((ALfloat)log10((double)(x)))
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#endif
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#ifdef HAVE_FLOORF
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#define aluFloor(x) (floorf((x)))
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#else
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#define aluFloor(x) ((ALfloat)floor((double)(x)))
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#endif
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#define QUADRANT_NUM 128
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#define LUT_NUM (4 * QUADRANT_NUM)
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ALsource;
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struct ALbuffer;
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typedef ALvoid (*MixerFunc)(struct ALsource *self, ALCdevice *Device,
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const ALvoid *RESTRICT data,
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ALuint *DataPosInt, ALuint *DataPosFrac,
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ALuint OutPos, ALuint SamplesToDo,
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ALuint BufferSize);
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enum Resampler {
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PointResampler,
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LinearResampler,
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CubicResampler,
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ResamplerMax,
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};
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enum Channel {
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FRONT_LEFT = 0,
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FRONT_RIGHT,
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FRONT_CENTER,
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LFE,
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BACK_LEFT,
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BACK_RIGHT,
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BACK_CENTER,
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SIDE_LEFT,
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SIDE_RIGHT,
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MAXCHANNELS
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};
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enum DistanceModel {
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InverseDistanceClamped = AL_INVERSE_DISTANCE_CLAMPED,
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LinearDistanceClamped = AL_LINEAR_DISTANCE_CLAMPED,
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ExponentDistanceClamped = AL_EXPONENT_DISTANCE_CLAMPED,
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InverseDistance = AL_INVERSE_DISTANCE,
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LinearDistance = AL_LINEAR_DISTANCE,
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ExponentDistance = AL_EXPONENT_DISTANCE,
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DisableDistance = AL_NONE,
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DefaultDistanceModel = InverseDistanceClamped
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};
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#define BUFFERSIZE 4096
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#define FRACTIONBITS (14)
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#define FRACTIONONE (1<<FRACTIONBITS)
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#define FRACTIONMASK (FRACTIONONE-1)
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/* Size for temporary stack storage of buffer data. Must be a multiple of the
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* size of ALfloat, ie, 4. Larger values need more stack, while smaller values
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* may need more iterations. The value needs to be a sensible size, however, as
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* it constrains the max stepping value used for mixing.
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* The mixer requires being able to do two samplings per mixing loop. A 16KB
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* buffer can hold 512 sample frames for a 7.1 float buffer. With the cubic
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* resampler (which requires 3 padding sample frames), this limits the maximum
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* step to about 508. This means that buffer_freq*source_pitch cannot exceed
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* device_freq*508 for an 8-channel 32-bit buffer. */
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#ifndef STACK_DATA_SIZE
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#define STACK_DATA_SIZE 16384
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#endif
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static __inline ALfloat minf(ALfloat a, ALfloat b)
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{ return ((a > b) ? b : a); }
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static __inline ALfloat maxf(ALfloat a, ALfloat b)
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{ return ((a > b) ? a : b); }
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static __inline ALfloat clampf(ALfloat val, ALfloat min, ALfloat max)
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{ return minf(max, maxf(min, val)); }
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static __inline ALuint minu(ALuint a, ALuint b)
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{ return ((a > b) ? b : a); }
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static __inline ALuint maxu(ALuint a, ALuint b)
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{ return ((a > b) ? a : b); }
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static __inline ALuint clampu(ALuint val, ALuint min, ALuint max)
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{ return minu(max, maxu(min, val)); }
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static __inline ALint mini(ALint a, ALint b)
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{ return ((a > b) ? b : a); }
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static __inline ALint maxi(ALint a, ALint b)
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{ return ((a > b) ? a : b); }
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static __inline ALint clampi(ALint val, ALint min, ALint max)
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{ return mini(max, maxi(min, val)); }
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static __inline ALint64 mini64(ALint64 a, ALint64 b)
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{ return ((a > b) ? b : a); }
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static __inline ALint64 maxi64(ALint64 a, ALint64 b)
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{ return ((a > b) ? a : b); }
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static __inline ALint64 clampi64(ALint64 val, ALint64 min, ALint64 max)
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{ return mini64(max, maxi64(min, val)); }
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static __inline ALfloat lerp(ALfloat val1, ALfloat val2, ALfloat mu)
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{
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return val1 + (val2-val1)*mu;
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}
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static __inline ALfloat cubic(ALfloat val0, ALfloat val1, ALfloat val2, ALfloat val3, ALfloat mu)
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{
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ALfloat mu2 = mu*mu;
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ALfloat a0 = -0.5f*val0 + 1.5f*val1 + -1.5f*val2 + 0.5f*val3;
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ALfloat a1 = val0 + -2.5f*val1 + 2.0f*val2 + -0.5f*val3;
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ALfloat a2 = -0.5f*val0 + 0.5f*val2;
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ALfloat a3 = val1;
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return a0*mu*mu2 + a1*mu2 + a2*mu + a3;
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}
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static __inline int SetMixerFPUMode(void)
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{
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#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
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fpu_control_t fpuState, newState;
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_FPU_GETCW(fpuState);
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newState = fpuState&~(_FPU_EXTENDED|_FPU_DOUBLE|_FPU_SINGLE |
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_FPU_RC_NEAREST|_FPU_RC_DOWN|_FPU_RC_UP|_FPU_RC_ZERO);
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newState |= _FPU_SINGLE | _FPU_RC_ZERO;
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_FPU_SETCW(newState);
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#else
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int fpuState;
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#if defined(HAVE__CONTROLFP)
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fpuState = _controlfp(0, 0);
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(void)_controlfp(_RC_CHOP|_PC_24, _MCW_RC|_MCW_PC);
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#elif defined(HAVE_FESETROUND)
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fpuState = fegetround();
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fesetround(FE_TOWARDZERO);
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#endif
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#endif
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return fpuState;
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}
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static __inline void RestoreFPUMode(int state)
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{
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#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
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fpu_control_t fpuState = state;
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_FPU_SETCW(fpuState);
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#elif defined(HAVE__CONTROLFP)
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_controlfp(state, _MCW_RC|_MCW_PC);
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#elif defined(HAVE_FESETROUND)
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fesetround(state);
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#endif
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}
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static __inline void aluCrossproduct(const ALfloat *inVector1, const ALfloat *inVector2, ALfloat *outVector)
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{
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outVector[0] = inVector1[1]*inVector2[2] - inVector1[2]*inVector2[1];
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outVector[1] = inVector1[2]*inVector2[0] - inVector1[0]*inVector2[2];
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outVector[2] = inVector1[0]*inVector2[1] - inVector1[1]*inVector2[0];
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}
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static __inline ALfloat aluDotproduct(const ALfloat *inVector1, const ALfloat *inVector2)
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{
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return inVector1[0]*inVector2[0] + inVector1[1]*inVector2[1] +
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inVector1[2]*inVector2[2];
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}
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static __inline void aluNormalize(ALfloat *inVector)
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{
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ALfloat length, inverse_length;
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length = aluSqrt(aluDotproduct(inVector, inVector));
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if(length > 0.0f)
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{
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inverse_length = 1.0f/length;
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inVector[0] *= inverse_length;
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inVector[1] *= inverse_length;
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inVector[2] *= inverse_length;
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}
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}
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ALvoid aluInitPanning(ALCdevice *Device);
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ALint aluCart2LUTpos(ALfloat re, ALfloat im);
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ALvoid CalcSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
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ALvoid CalcNonAttnSourceParams(struct ALsource *ALSource, const ALCcontext *ALContext);
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MixerFunc SelectMixer(enum Resampler Resampler);
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MixerFunc SelectHrtfMixer(enum Resampler Resampler);
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ALvoid MixSource(struct ALsource *Source, ALCdevice *Device, ALuint SamplesToDo);
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ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size);
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ALvoid aluHandleDisconnect(ALCdevice *device);
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extern ALfloat ConeScale;
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extern ALfloat ZScale;
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#ifdef __cplusplus
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}
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#endif
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#endif
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