AuroraMiddleware/AuroraOpenALSoft
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
371fda1803
AuroraOpenALSoft/Alc/panning.c
Chris Robinson 371fda1803 Update the default basic B-Format decoders 
This also converts them to ACN/N3D format.
2017-01-21 11:05:05 -08:00

1117 lines
45 KiB
C
Raw Blame History

/**
* OpenAL cross platform audio library
* Copyright (C) 1999-2010 by authors.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include "config.h"
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include "alMain.h"
#include "alAuxEffectSlot.h"
#include "alu.h"
#include "bool.h"
#include "ambdec.h"
#include "bformatdec.h"
#include "uhjfilter.h"
#include "bs2b.h"
extern inline void CalcXYZCoeffs(ALfloat x, ALfloat y, ALfloat z, ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS]);
#define ZERO_ORDER_SCALE 0.0f
#define FIRST_ORDER_SCALE 1.0f
#define SECOND_ORDER_SCALE (1.0f / 1.22474f)
#define THIRD_ORDER_SCALE (1.0f / 1.30657f)
static const ALsizei FuMa2ACN[MAX_AMBI_COEFFS] = {
0, /* W */
3, /* X */
1, /* Y */
2, /* Z */
6, /* R */
7, /* S */
5, /* T */
8, /* U */
4, /* V */
12, /* K */
13, /* L */
11, /* M */
14, /* N */
10, /* O */
15, /* P */
9, /* Q */
};
static const ALsizei ACN2ACN[MAX_AMBI_COEFFS] = {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15
};
/* NOTE: These are scale factors as applied to Ambisonics content. Decoder
* coefficients should be divided by these values to get proper N3D scalings.
*/
static const ALfloat UnitScale[MAX_AMBI_COEFFS] = {
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f
};
static const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS] = {
1.000000000f, /* ACN 0 (W), sqrt(1) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
2.236067978f, /* ACN 4 (V), sqrt(5) */
2.236067978f, /* ACN 5 (T), sqrt(5) */
2.236067978f, /* ACN 6 (R), sqrt(5) */
2.236067978f, /* ACN 7 (S), sqrt(5) */
2.236067978f, /* ACN 8 (U), sqrt(5) */
2.645751311f, /* ACN 9 (Q), sqrt(7) */
2.645751311f, /* ACN 10 (O), sqrt(7) */
2.645751311f, /* ACN 11 (M), sqrt(7) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.645751311f, /* ACN 13 (L), sqrt(7) */
2.645751311f, /* ACN 14 (N), sqrt(7) */
2.645751311f, /* ACN 15 (P), sqrt(7) */
};
static const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS] = {
1.414213562f, /* ACN 0 (W), sqrt(2) */
1.732050808f, /* ACN 1 (Y), sqrt(3) */
1.732050808f, /* ACN 2 (Z), sqrt(3) */
1.732050808f, /* ACN 3 (X), sqrt(3) */
1.936491673f, /* ACN 4 (V), sqrt(15)/2 */
1.936491673f, /* ACN 5 (T), sqrt(15)/2 */
2.236067978f, /* ACN 6 (R), sqrt(5) */
1.936491673f, /* ACN 7 (S), sqrt(15)/2 */
1.936491673f, /* ACN 8 (U), sqrt(15)/2 */
2.091650066f, /* ACN 9 (Q), sqrt(35/8) */
1.972026594f, /* ACN 10 (O), sqrt(35)/3 */
2.231093404f, /* ACN 11 (M), sqrt(224/45) */
2.645751311f, /* ACN 12 (K), sqrt(7) */
2.231093404f, /* ACN 13 (L), sqrt(224/45) */
1.972026594f, /* ACN 14 (N), sqrt(35)/3 */
2.091650066f, /* ACN 15 (P), sqrt(35/8) */
};
void CalcDirectionCoeffs(const ALfloat dir[3], ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS])
{
/* Convert from OpenAL coords to Ambisonics. */
ALfloat x = -dir[2];
ALfloat y = -dir[0];
ALfloat z = dir[1];
/* Zeroth-order */
coeffs[0] = 1.0f; /* ACN 0 = 1 */
/* First-order */
coeffs[1] = 1.732050808f * y; /* ACN 1 = sqrt(3) * Y */
coeffs[2] = 1.732050808f * z; /* ACN 2 = sqrt(3) * Z */
coeffs[3] = 1.732050808f * x; /* ACN 3 = sqrt(3) * X */
/* Second-order */
coeffs[4] = 3.872983346f * x * y; /* ACN 4 = sqrt(15) * X * Y */
coeffs[5] = 3.872983346f * y * z; /* ACN 5 = sqrt(15) * Y * Z */
coeffs[6] = 1.118033989f * (3.0f*z*z - 1.0f); /* ACN 6 = sqrt(5)/2 * (3*Z*Z - 1) */
coeffs[7] = 3.872983346f * x * z; /* ACN 7 = sqrt(15) * X * Z */
coeffs[8] = 1.936491673f * (x*x - y*y); /* ACN 8 = sqrt(15)/2 * (X*X - Y*Y) */
/* Third-order */
coeffs[9] = 2.091650066f * y * (3.0f*x*x - y*y); /* ACN 9 = sqrt(35/8) * Y * (3*X*X - Y*Y) */
coeffs[10] = 10.246950766f * z * x * y; /* ACN 10 = sqrt(105) * Z * X * Y */
coeffs[11] = 1.620185175f * y * (5.0f*z*z - 1.0f); /* ACN 11 = sqrt(21/8) * Y * (5*Z*Z - 1) */
coeffs[12] = 1.322875656f * z * (5.0f*z*z - 3.0f); /* ACN 12 = sqrt(7)/2 * Z * (5*Z*Z - 3) */
coeffs[13] = 1.620185175f * x * (5.0f*z*z - 1.0f); /* ACN 13 = sqrt(21/8) * X * (5*Z*Z - 1) */
coeffs[14] = 5.123475383f * z * (x*x - y*y); /* ACN 14 = sqrt(105)/2 * Z * (X*X - Y*Y) */
coeffs[15] = 2.091650066f * x * (x*x - 3.0f*y*y); /* ACN 15 = sqrt(35/8) * X * (X*X - 3*Y*Y) */
if(spread > 0.0f)
{
/* Implement the spread by using a spherical source that subtends the
* angle spread. See:
* http://www.ppsloan.org/publications/StupidSH36.pdf - Appendix A3
*
* When adjusted for N3D normalization instead of SN3D, these
* calculations are:
*
* ZH0 = -sqrt(pi) * (-1+ca);
* ZH1 = 0.5*sqrt(pi) * sa*sa;
* ZH2 = -0.5*sqrt(pi) * ca*(-1+ca)*(ca+1);
* ZH3 = -0.125*sqrt(pi) * (-1+ca)*(ca+1)*(5*ca*ca - 1);
* ZH4 = -0.125*sqrt(pi) * ca*(-1+ca)*(ca+1)*(7*ca*ca - 3);
* ZH5 = -0.0625*sqrt(pi) * (-1+ca)*(ca+1)*(21*ca*ca*ca*ca - 14*ca*ca + 1);
*
* The gain of the source is compensated for size, so that the
* loundness doesn't depend on the spread. That is, the factors are
* scaled so that ZH0 remains 1 regardless of the spread. Thus:
*
* ZH0 = 1.0f;
* ZH1 = 0.5f * (ca+1.0f);
* ZH2 = 0.5f * (ca+1.0f)*ca;
* ZH3 = 0.125f * (ca+1.0f)*(5.0f*ca*ca - 1.0f);
* ZH4 = 0.125f * (ca+1.0f)*(7.0f*ca*ca - 3.0f)*ca;
* ZH5 = 0.0625f * (ca+1.0f)*(21.0f*ca*ca*ca*ca - 14.0f*ca*ca + 1.0f);
*/
ALfloat ca = cosf(spread * 0.5f);
ALfloat ZH0_norm = 1.0f;
ALfloat ZH1_norm = 0.5f * (ca+1.f);
ALfloat ZH2_norm = 0.5f * (ca+1.f)*ca;
ALfloat ZH3_norm = 0.125f * (ca+1.f)*(5.f*ca*ca-1.f);
/* Zeroth-order */
coeffs[0] *= ZH0_norm;
/* First-order */
coeffs[1] *= ZH1_norm;
coeffs[2] *= ZH1_norm;
coeffs[3] *= ZH1_norm;
/* Second-order */
coeffs[4] *= ZH2_norm;
coeffs[5] *= ZH2_norm;
coeffs[6] *= ZH2_norm;
coeffs[7] *= ZH2_norm;
coeffs[8] *= ZH2_norm;
/* Third-order */
coeffs[9] *= ZH3_norm;
coeffs[10] *= ZH3_norm;
coeffs[11] *= ZH3_norm;
coeffs[12] *= ZH3_norm;
coeffs[13] *= ZH3_norm;
coeffs[14] *= ZH3_norm;
coeffs[15] *= ZH3_norm;
}
}
void CalcAngleCoeffs(ALfloat azimuth, ALfloat elevation, ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS])
{
ALfloat dir[3] = {
sinf(azimuth) * cosf(elevation),
sinf(elevation),
-cosf(azimuth) * cosf(elevation)
};
CalcDirectionCoeffs(dir, spread, coeffs);
}
void ComputeAmbientGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALsizei i;
for(i = 0;i < numchans;i++)
{
// The W coefficients are based on a mathematical average of the
// output. The square root of the base average provides for a more
// perceptual average volume, better suited to non-directional gains.
gains[i] = sqrtf(chancoeffs[i][0]) * ingain;
}
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
void ComputeAmbientGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALfloat gain = 0.0f;
ALsizei i;
for(i = 0;i < numchans;i++)
{
if(chanmap[i].Index == 0)
gain += chanmap[i].Scale;
}
gains[0] = gain * 1.414213562f * ingain;
for(i = 1;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
void ComputePanningGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, ALsizei numcoeffs, const ALfloat coeffs[MAX_AMBI_COEFFS], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALsizei i, j;
for(i = 0;i < numchans;i++)
{
float gain = 0.0f;
for(j = 0;j < numcoeffs;j++)
gain += chancoeffs[i][j]*coeffs[j];
gains[i] = gain * ingain;
}
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
void ComputePanningGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, const ALfloat coeffs[MAX_AMBI_COEFFS], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALsizei i;
for(i = 0;i < numchans;i++)
gains[i] = chanmap[i].Scale * coeffs[chanmap[i].Index] * ingain;
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
void ComputeFirstOrderGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALsizei i, j;
for(i = 0;i < numchans;i++)
{
float gain = 0.0f;
for(j = 0;j < 4;j++)
gain += chancoeffs[i][j] * mtx[j];
gains[i] = gain * ingain;
}
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
void ComputeFirstOrderGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
{
ALsizei i;
for(i = 0;i < numchans;i++)
gains[i] = chanmap[i].Scale * mtx[chanmap[i].Index] * ingain;
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
static inline const char *GetLabelFromChannel(enum Channel channel)
{
switch(channel)
{
case FrontLeft: return "front-left";
case FrontRight: return "front-right";
case FrontCenter: return "front-center";
case LFE: return "lfe";
case BackLeft: return "back-left";
case BackRight: return "back-right";
case BackCenter: return "back-center";
case SideLeft: return "side-left";
case SideRight: return "side-right";
case UpperFrontLeft: return "upper-front-left";
case UpperFrontRight: return "upper-front-right";
case UpperBackLeft: return "upper-back-left";
case UpperBackRight: return "upper-back-right";
case LowerFrontLeft: return "lower-front-left";
case LowerFrontRight: return "lower-front-right";
case LowerBackLeft: return "lower-back-left";
case LowerBackRight: return "lower-back-right";
case Aux0: return "aux-0";
case Aux1: return "aux-1";
case Aux2: return "aux-2";
case Aux3: return "aux-3";
case Aux4: return "aux-4";
case Aux5: return "aux-5";
case Aux6: return "aux-6";
case Aux7: return "aux-7";
case Aux8: return "aux-8";
case Aux9: return "aux-9";
case Aux10: return "aux-10";
case Aux11: return "aux-11";
case Aux12: return "aux-12";
case Aux13: return "aux-13";
case Aux14: return "aux-14";
case Aux15: return "aux-15";
case InvalidChannel: break;
}
return "(unknown)";
}
typedef struct ChannelMap {
enum Channel ChanName;
ChannelConfig Config;
} ChannelMap;
static void SetChannelMap(const enum Channel *devchans, ChannelConfig *ambicoeffs,
const ChannelMap *chanmap, size_t count, ALsizei *outcount)
{
size_t j, k;
ALsizei i;
for(i = 0;i < MAX_OUTPUT_CHANNELS && devchans[i] != InvalidChannel;i++)
{
if(devchans[i] == LFE)
{
for(j = 0;j < MAX_AMBI_COEFFS;j++)
ambicoeffs[i][j] = 0.0f;
continue;
}
for(j = 0;j < count;j++)
{
if(devchans[i] != chanmap[j].ChanName)
continue;
for(k = 0;k < MAX_AMBI_COEFFS;++k)
ambicoeffs[i][k] = chanmap[j].Config[k];
break;
}
if(j == count)
ERR("Failed to match %s channel (%u) in channel map\n", GetLabelFromChannel(devchans[i]), i);
}
*outcount = i;
}
static bool MakeSpeakerMap(ALCdevice *device, const AmbDecConf *conf, ALuint speakermap[MAX_OUTPUT_CHANNELS])
{
ALsizei i;
for(i = 0;i < conf->NumSpeakers;i++)
{
int c = -1;
/* NOTE: AmbDec does not define any standard speaker names, however
* for this to work we have to by able to find the output channel
* the speaker definition corresponds to. Therefore, OpenAL Soft
* requires these channel labels to be recognized:
*
* LF = Front left
* RF = Front right
* LS = Side left
* RS = Side right
* LB = Back left
* RB = Back right
* CE = Front center
* CB = Back center
*
* Additionally, surround51 will acknowledge back speakers for side
* channels, and surround51rear will acknowledge side speakers for
* back channels, to avoid issues with an ambdec expecting 5.1 to
* use the side channels when the device is configured for back,
* and vice-versa.
*/
if(al_string_cmp_cstr(conf->Speakers[i].Name, "LF") == 0)
c = GetChannelIdxByName(device->RealOut, FrontLeft);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RF") == 0)
c = GetChannelIdxByName(device->RealOut, FrontRight);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "CE") == 0)
c = GetChannelIdxByName(device->RealOut, FrontCenter);
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "LS") == 0)
{
if(device->FmtChans == DevFmtX51Rear)
c = GetChannelIdxByName(device->RealOut, BackLeft);
else
c = GetChannelIdxByName(device->RealOut, SideLeft);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RS") == 0)
{
if(device->FmtChans == DevFmtX51Rear)
c = GetChannelIdxByName(device->RealOut, BackRight);
else
c = GetChannelIdxByName(device->RealOut, SideRight);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "LB") == 0)
{
if(device->FmtChans == DevFmtX51)
c = GetChannelIdxByName(device->RealOut, SideLeft);
else
c = GetChannelIdxByName(device->RealOut, BackLeft);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "RB") == 0)
{
if(device->FmtChans == DevFmtX51)
c = GetChannelIdxByName(device->RealOut, SideRight);
else
c = GetChannelIdxByName(device->RealOut, BackRight);
}
else if(al_string_cmp_cstr(conf->Speakers[i].Name, "CB") == 0)
c = GetChannelIdxByName(device->RealOut, BackCenter);
else
{
const char *name = al_string_get_cstr(conf->Speakers[i].Name);
unsigned int n;
char ch;
if(sscanf(name, "AUX%u%c", &n, &ch) == 1 && n < 16)
c = GetChannelIdxByName(device->RealOut, Aux0+n);
else
{
ERR("AmbDec speaker label \"%s\" not recognized\n", name);
return false;
}
}
if(c == -1)
{
ERR("Failed to lookup AmbDec speaker label %s\n",
al_string_get_cstr(conf->Speakers[i].Name));
return false;
}
speakermap[i] = c;
}
return true;
}
static const ChannelMap MonoCfg[1] = {
{ FrontCenter, { 1.0f } },
}, StereoCfg[2] = {
{ FrontLeft, { 5.00000000e-1f, 2.88675135e-1f, 0.0f, 0.0f } },
{ FrontRight, { 5.00000000e-1f, -2.88675135e-1f, 0.0f, 0.0f } },
}, QuadCfg[4] = {
{ BackLeft, { 3.53553391e-1f, 2.04124145e-1f, 0.0f, -2.04124145e-1f } },
{ FrontLeft, { 3.53553391e-1f, 2.04124145e-1f, 0.0f, 2.04124145e-1f } },
{ FrontRight, { 3.53553391e-1f, -2.04124145e-1f, 0.0f, 2.04124145e-1f } },
{ BackRight, { 3.53553391e-1f, -2.04124145e-1f, 0.0f, -2.04124145e-1f } },
}, X51SideCfg[5] = {
{ SideLeft, { 3.33001372e-1f, 1.89085671e-1f, 0.0f, -2.00041334e-1f, -2.12309737e-2f, 0.0f, 0.0f, 0.0f, -1.14573483e-2f } },
{ FrontLeft, { 1.47751298e-1f, 1.28994110e-1f, 0.0f, 1.15190495e-1f, 7.44949143e-2f, 0.0f, 0.0f, 0.0f, -6.47739980e-3f } },
{ FrontCenter, { 7.73595729e-2f, 0.00000000e+0f, 0.0f, 9.71390298e-2f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, 5.18625335e-2f } },
{ FrontRight, { 1.47751298e-1f, -1.28994110e-1f, 0.0f, 1.15190495e-1f, -7.44949143e-2f, 0.0f, 0.0f, 0.0f, -6.47739980e-3f } },
{ SideRight, { 3.33001372e-1f, -1.89085671e-1f, 0.0f, -2.00041334e-1f, 2.12309737e-2f, 0.0f, 0.0f, 0.0f, -1.14573483e-2f } },
}, X51RearCfg[5] = {
{ BackLeft, { 3.33001372e-1f, 1.89085671e-1f, 0.0f, -2.00041334e-1f, -2.12309737e-2f, 0.0f, 0.0f, 0.0f, -1.14573483e-2f } },
{ FrontLeft, { 1.47751298e-1f, 1.28994110e-1f, 0.0f, 1.15190495e-1f, 7.44949143e-2f, 0.0f, 0.0f, 0.0f, -6.47739980e-3f } },
{ FrontCenter, { 7.73595729e-2f, 0.00000000e+0f, 0.0f, 9.71390298e-2f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, 5.18625335e-2f } },
{ FrontRight, { 1.47751298e-1f, -1.28994110e-1f, 0.0f, 1.15190495e-1f, -7.44949143e-2f, 0.0f, 0.0f, 0.0f, -6.47739980e-3f } },
{ BackRight, { 3.33001372e-1f, -1.89085671e-1f, 0.0f, -2.00041334e-1f, 2.12309737e-2f, 0.0f, 0.0f, 0.0f, -1.14573483e-2f } },
}, X61Cfg[6] = {
{ SideLeft, { 2.04462744e-1f, 2.17178497e-1f, 0.0f, -4.39990188e-2f, -2.60787329e-2f, 0.0f, 0.0f, 0.0f, -6.87238843e-2f } },
{ FrontLeft, { 1.18130342e-1f, 9.34633906e-2f, 0.0f, 1.08553749e-1f, 6.80658795e-2f, 0.0f, 0.0f, 0.0f, 1.08999485e-2f } },
{ FrontCenter, { 7.73595729e-2f, 0.00000000e+0f, 0.0f, 9.71390298e-2f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, 5.18625335e-2f } },
{ FrontRight, { 1.18130342e-1f, -9.34633906e-2f, 0.0f, 1.08553749e-1f, -6.80658795e-2f, 0.0f, 0.0f, 0.0f, 1.08999485e-2f } },
{ SideRight, { 2.04462744e-1f, -2.17178497e-1f, 0.0f, -4.39990188e-2f, 2.60787329e-2f, 0.0f, 0.0f, 0.0f, -6.87238843e-2f } },
{ BackCenter, { 2.50001688e-1f, 0.00000000e+0f, 0.0f, -2.50000094e-1f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, 6.05133395e-2f } },
}, X71Cfg[6] = {
{ BackLeft, { 2.04124145e-1f, 1.08880247e-1f, 0.0f, -1.88586120e-1f, -1.29099444e-1f, 0.0f, 0.0f, 0.0f, 7.45355993e-2f, 3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
{ SideLeft, { 2.04124145e-1f, 2.17760495e-1f, 0.0f, 0.00000000e+0f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, -1.49071198e-1f, -3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
{ FrontLeft, { 2.04124145e-1f, 1.08880247e-1f, 0.0f, 1.88586120e-1f, 1.29099444e-1f, 0.0f, 0.0f, 0.0f, 7.45355993e-2f, 3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
{ FrontRight, { 2.04124145e-1f, -1.08880247e-1f, 0.0f, 1.88586120e-1f, -1.29099444e-1f, 0.0f, 0.0f, 0.0f, 7.45355993e-2f, -3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
{ SideRight, { 2.04124145e-1f, -2.17760495e-1f, 0.0f, 0.00000000e+0f, 0.00000000e+0f, 0.0f, 0.0f, 0.0f, -1.49071198e-1f, 3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
{ BackRight, { 2.04124145e-1f, -1.08880247e-1f, 0.0f, -1.88586120e-1f, 1.29099444e-1f, 0.0f, 0.0f, 0.0f, 7.45355993e-2f, -3.73460789e-2f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.00000000e+0f } },
};
static void InitPanning(ALCdevice *device)
{
const ChannelMap *chanmap = NULL;
ALsizei coeffcount = 0;
ALfloat ambiscale;
ALsizei count = 0;
ALsizei i, j;
ambiscale = 1.0f;
switch(device->FmtChans)
{
case DevFmtMono:
count = COUNTOF(MonoCfg);
chanmap = MonoCfg;
ambiscale = ZERO_ORDER_SCALE;
coeffcount = 1;
break;
case DevFmtStereo:
count = COUNTOF(StereoCfg);
chanmap = StereoCfg;
ambiscale = FIRST_ORDER_SCALE;
coeffcount = 4;
break;
case DevFmtQuad:
count = COUNTOF(QuadCfg);
chanmap = QuadCfg;
ambiscale = FIRST_ORDER_SCALE;
coeffcount = 9;
break;
case DevFmtX51:
count = COUNTOF(X51SideCfg);
chanmap = X51SideCfg;
ambiscale = SECOND_ORDER_SCALE;
coeffcount = 9;
break;
case DevFmtX51Rear:
count = COUNTOF(X51RearCfg);
chanmap = X51RearCfg;
ambiscale = SECOND_ORDER_SCALE;
coeffcount = 9;
break;
case DevFmtX61:
count = COUNTOF(X61Cfg);
chanmap = X61Cfg;
ambiscale = SECOND_ORDER_SCALE;
coeffcount = 16;
break;
case DevFmtX71:
count = COUNTOF(X71Cfg);
chanmap = X71Cfg;
ambiscale = THIRD_ORDER_SCALE;
coeffcount = 16;
break;
case DevFmtAmbi1:
case DevFmtAmbi2:
case DevFmtAmbi3:
break;
}
if(device->FmtChans >= DevFmtAmbi1 && device->FmtChans <= DevFmtAmbi3)
{
const ALsizei *acnmap = (device->AmbiFmt == AmbiFormat_FuMa) ? FuMa2ACN : ACN2ACN;
const ALfloat *n3dscale = (device->AmbiFmt == AmbiFormat_FuMa) ? FuMa2N3DScale :
(device->AmbiFmt == AmbiFormat_ACN_SN3D) ? SN3D2N3DScale :
/*(device->AmbiFmt == AmbiFormat_ACN_N3D) ?*/ UnitScale;
count = (device->FmtChans == DevFmtAmbi3) ? 16 :
(device->FmtChans == DevFmtAmbi2) ? 9 :
(device->FmtChans == DevFmtAmbi1) ? 4 : 1;
for(i = 0;i < count;i++)
{
ALsizei acn = acnmap[i];
device->Dry.Ambi.Map[i].Scale = 1.0f/n3dscale[acn];
device->Dry.Ambi.Map[i].Index = acn;
}
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
if(device->FmtChans == DevFmtAmbi1)
{
device->FOAOut.Ambi = device->Dry.Ambi;
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
}
else
{
/* FOA output is always ACN+N3D for higher-order ambisonic output.
* The upsampler expects this and will convert it for output.
*/
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < 4;i++)
{
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
device->FOAOut.Ambi.Map[i].Index = i;
}
device->FOAOut.CoeffCount = 0;
ambiup_reset(device->AmbiUp, device);
}
}
else
{
SetChannelMap(device->RealOut.ChannelName, device->Dry.Ambi.Coeffs,
chanmap, count, &device->Dry.NumChannels);
device->Dry.CoeffCount = coeffcount;
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < (ALsizei)device->Dry.NumChannels;i++)
{
device->FOAOut.Ambi.Coeffs[i][0] = device->Dry.Ambi.Coeffs[i][0];
for(j = 1;j < 4;j++)
device->FOAOut.Ambi.Coeffs[i][j] = device->Dry.Ambi.Coeffs[i][j] * ambiscale;
}
device->FOAOut.CoeffCount = 4;
}
}
static void InitCustomPanning(ALCdevice *device, const AmbDecConf *conf, const ALuint speakermap[MAX_OUTPUT_CHANNELS])
{
ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
const ALfloat *coeff_scale = UnitScale;
ALfloat ambiscale = 1.0f;
ALsizei i, j;
if(conf->FreqBands != 1)
ERR("Basic renderer uses the high-frequency matrix as single-band (xover_freq = %.0fhz)\n",
conf->XOverFreq);
if(conf->ChanMask > 0x1ff)
ambiscale = THIRD_ORDER_SCALE;
else if(conf->ChanMask > 0xf)
ambiscale = SECOND_ORDER_SCALE;
else if(conf->ChanMask > 0x1)
ambiscale = FIRST_ORDER_SCALE;
else
ambiscale = 0.0f;
if(conf->CoeffScale == ADS_SN3D)
coeff_scale = SN3D2N3DScale;
else if(conf->CoeffScale == ADS_FuMa)
coeff_scale = FuMa2N3DScale;
for(i = 0;i < conf->NumSpeakers;i++)
{
ALsizei chan = speakermap[i];
ALfloat gain;
ALsizei k = 0;
for(j = 0;j < MAX_AMBI_COEFFS;j++)
chanmap[i].Config[j] = 0.0f;
chanmap[i].ChanName = device->RealOut.ChannelName[chan];
for(j = 0;j < MAX_AMBI_COEFFS;j++)
{
if(j == 0) gain = conf->HFOrderGain[0];
else if(j == 1) gain = conf->HFOrderGain[1];
else if(j == 4) gain = conf->HFOrderGain[2];
else if(j == 9) gain = conf->HFOrderGain[3];
if((conf->ChanMask&(1<<j)))
chanmap[i].Config[j] = conf->HFMatrix[i][k++] / coeff_scale[j] * gain;
}
}
SetChannelMap(device->RealOut.ChannelName, device->Dry.Ambi.Coeffs, chanmap,
conf->NumSpeakers, &device->Dry.NumChannels);
device->Dry.CoeffCount = (conf->ChanMask > 0x1ff) ? 16 :
(conf->ChanMask > 0xf) ? 9 : 4;
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < (ALsizei)device->Dry.NumChannels;i++)
{
device->FOAOut.Ambi.Coeffs[i][0] = device->Dry.Ambi.Coeffs[i][0];
for(j = 1;j < 4;j++)
device->FOAOut.Ambi.Coeffs[i][j] = device->Dry.Ambi.Coeffs[i][j] * ambiscale;
}
device->FOAOut.CoeffCount = 4;
}
static void InitHQPanning(ALCdevice *device, const AmbDecConf *conf, const ALuint speakermap[MAX_OUTPUT_CHANNELS])
{
const char *devname;
int decflags = 0;
size_t count;
size_t i;
devname = al_string_get_cstr(device->DeviceName);
if(GetConfigValueBool(devname, "decoder", "distance-comp", 1))
decflags |= BFDF_DistanceComp;
if((conf->ChanMask&AMBI_PERIPHONIC_MASK))
{
count = (conf->ChanMask > 0x1ff) ? 16 :
(conf->ChanMask > 0xf) ? 9 : 4;
for(i = 0;i < count;i++)
{
device->Dry.Ambi.Map[i].Scale = 1.0f;
device->Dry.Ambi.Map[i].Index = i;
}
}
else
{
static const int map[MAX_AMBI2D_COEFFS] = { 0, 1, 3, 4, 8, 9, 15 };
count = (conf->ChanMask > 0x1ff) ? 7 :
(conf->ChanMask > 0xf) ? 5 : 3;
for(i = 0;i < count;i++)
{
device->Dry.Ambi.Map[i].Scale = 1.0f;
device->Dry.Ambi.Map[i].Index = map[i];
}
}
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
TRACE("Enabling %s-band %s-order%s ambisonic decoder\n",
(conf->FreqBands == 1) ? "single" : "dual",
(conf->ChanMask > 0xf) ? (conf->ChanMask > 0x1ff) ? "third" : "second" : "first",
(conf->ChanMask&AMBI_PERIPHONIC_MASK) ? " periphonic" : ""
);
bformatdec_reset(device->AmbiDecoder, conf, count, device->Frequency,
speakermap, decflags);
if(bformatdec_getOrder(device->AmbiDecoder) < 2)
{
device->FOAOut.Ambi = device->Dry.Ambi;
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
}
else
{
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < 4;i++)
{
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
device->FOAOut.Ambi.Map[i].Index = i;
}
device->FOAOut.CoeffCount = 0;
}
}
static void InitHrtfPanning(ALCdevice *device, bool hoa_mode)
{
/* NOTE: azimuth goes clockwise. */
static const ALfloat AmbiPoints[][2] = {
{ DEG2RAD( 90.0f), DEG2RAD( 0.0f) },
{ DEG2RAD( 35.0f), DEG2RAD( -45.0f) },
{ DEG2RAD( 35.0f), DEG2RAD( 45.0f) },
{ DEG2RAD( 35.0f), DEG2RAD( 135.0f) },
{ DEG2RAD( 35.0f), DEG2RAD(-135.0f) },
{ DEG2RAD( 0.0f), DEG2RAD( 0.0f) },
{ DEG2RAD( 0.0f), DEG2RAD( 90.0f) },
{ DEG2RAD( 0.0f), DEG2RAD( 180.0f) },
{ DEG2RAD( 0.0f), DEG2RAD( -90.0f) },
{ DEG2RAD(-35.0f), DEG2RAD( -45.0f) },
{ DEG2RAD(-35.0f), DEG2RAD( 45.0f) },
{ DEG2RAD(-35.0f), DEG2RAD( 135.0f) },
{ DEG2RAD(-35.0f), DEG2RAD(-135.0f) },
{ DEG2RAD(-90.0f), DEG2RAD( 0.0f) },
};
static const ALfloat AmbiMatrixFOA[][2][MAX_AMBI_COEFFS] = {
{ { 1.88982237e-001f, 0.00000000e+000f, 1.90399923e-001f, 0.00000000e+000f }, { 7.14285714e-002f, 0.00000000e+000f, 1.24646009e-001f, 0.00000000e+000f } },
{ { 1.88982237e-001f, 1.09057783e-001f, 1.09208910e-001f, 1.09057783e-001f }, { 7.14285714e-002f, 7.13950780e-002f, 7.14940135e-002f, 7.13950780e-002f } },
{ { 1.88982237e-001f, -1.09057783e-001f, 1.09208910e-001f, 1.09057783e-001f }, { 7.14285714e-002f, -7.13950780e-002f, 7.14940135e-002f, 7.13950780e-002f } },
{ { 1.88982237e-001f, -1.09057783e-001f, 1.09208910e-001f, -1.09057783e-001f }, { 7.14285714e-002f, -7.13950780e-002f, 7.14940135e-002f, -7.13950780e-002f } },
{ { 1.88982237e-001f, 1.09057783e-001f, 1.09208910e-001f, -1.09057783e-001f }, { 7.14285714e-002f, 7.13950780e-002f, 7.14940135e-002f, -7.13950780e-002f } },
{ { 1.88982237e-001f, 0.00000000e+000f, 0.00000000e+000f, 1.88281281e-001f }, { 7.14285714e-002f, 0.00000000e+000f, 0.00000000e+000f, 1.23259031e-001f } },
{ { 1.88982237e-001f, -1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f }, { 7.14285714e-002f, -1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f } },
{ { 1.88982237e-001f, 0.00000000e+000f, 0.00000000e+000f, -1.88281281e-001f }, { 7.14285714e-002f, 0.00000000e+000f, 0.00000000e+000f, -1.23259031e-001f } },
{ { 1.88982237e-001f, 1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f }, { 7.14285714e-002f, 1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f } },
{ { 1.88982237e-001f, 1.09057783e-001f, -1.09208910e-001f, 1.09057783e-001f }, { 7.14285714e-002f, 7.13950780e-002f, -7.14940135e-002f, 7.13950780e-002f } },
{ { 1.88982237e-001f, -1.09057783e-001f, -1.09208910e-001f, 1.09057783e-001f }, { 7.14285714e-002f, -7.13950780e-002f, -7.14940135e-002f, 7.13950780e-002f } },
{ { 1.88982237e-001f, -1.09057783e-001f, -1.09208910e-001f, -1.09057783e-001f }, { 7.14285714e-002f, -7.13950780e-002f, -7.14940135e-002f, -7.13950780e-002f } },
{ { 1.88982237e-001f, 1.09057783e-001f, -1.09208910e-001f, -1.09057783e-001f }, { 7.14285714e-002f, 7.13950780e-002f, -7.14940135e-002f, -7.13950780e-002f } },
{ { 1.88982237e-001f, 0.00000000e+000f, -1.90399923e-001f, 0.00000000e+000f }, { 7.14285714e-002f, 0.00000000e+000f, -1.24646009e-001f, 0.00000000e+000f } }
}, AmbiMatrixHOA[][2][MAX_AMBI_COEFFS] = {
{ { 1.43315266e-001f, 0.00000000e+000f, 1.90399923e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 1.18020996e-001f, 0.00000000e+000f, 0.00000000e+000f }, { 7.26741039e-002f, 0.00000000e+000f, 1.24646009e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 1.49618920e-001f, 0.00000000e+000f, 0.00000000e+000f } },
{ { 1.40852210e-001f, 1.09057783e-001f, 1.09208910e-001f, 1.09057783e-001f, 7.58818830e-002f, 7.66295578e-002f, -3.28314629e-004f, 7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, 7.13950780e-002f, 7.14940135e-002f, 7.13950780e-002f, 9.61978444e-002f, 9.71456952e-002f, -4.16214759e-004f, 9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, -1.09057783e-001f, 1.09208910e-001f, 1.09057783e-001f, -7.58818830e-002f, -7.66295578e-002f, -3.28314629e-004f, 7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, -7.13950780e-002f, 7.14940135e-002f, 7.13950780e-002f, -9.61978444e-002f, -9.71456952e-002f, -4.16214759e-004f, 9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, -1.09057783e-001f, 1.09208910e-001f, -1.09057783e-001f, 7.58818830e-002f, -7.66295578e-002f, -3.28314629e-004f, -7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, -7.13950780e-002f, 7.14940135e-002f, -7.13950780e-002f, 9.61978444e-002f, -9.71456952e-002f, -4.16214759e-004f, -9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, 1.09057783e-001f, 1.09208910e-001f, -1.09057783e-001f, -7.58818830e-002f, 7.66295578e-002f, -3.28314629e-004f, -7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, 7.13950780e-002f, 7.14940135e-002f, -7.13950780e-002f, -9.61978444e-002f, 9.71456952e-002f, -4.16214759e-004f, -9.71456952e-002f, 0.00000000e+000f } },
{ { 1.39644596e-001f, 0.00000000e+000f, 0.00000000e+000f, 1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f, -5.83538687e-002f, 0.00000000e+000f, 1.01835015e-001f }, { 7.08127349e-002f, 0.00000000e+000f, 0.00000000e+000f, 1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f, -7.39770307e-002f, 0.00000000e+000f, 1.29099445e-001f } },
{ { 1.39644596e-001f, -1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, -5.83538687e-002f, 0.00000000e+000f, -1.01835015e-001f }, { 7.08127349e-002f, -1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, -7.39770307e-002f, 0.00000000e+000f, -1.29099445e-001f } },
{ { 1.39644596e-001f, 0.00000000e+000f, 0.00000000e+000f, -1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f, -5.83538687e-002f, 0.00000000e+000f, 1.01835015e-001f }, { 7.08127349e-002f, 0.00000000e+000f, 0.00000000e+000f, -1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f, -7.39770307e-002f, 0.00000000e+000f, 1.29099445e-001f } },
{ { 1.39644596e-001f, 1.88281281e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, -5.83538687e-002f, 0.00000000e+000f, -1.01835015e-001f }, { 7.08127349e-002f, 1.23259031e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, -7.39770307e-002f, 0.00000000e+000f, -1.29099445e-001f } },
{ { 1.40852210e-001f, 1.09057783e-001f, -1.09208910e-001f, 1.09057783e-001f, 7.58818830e-002f, -7.66295578e-002f, -3.28314629e-004f, -7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, 7.13950780e-002f, -7.14940135e-002f, 7.13950780e-002f, 9.61978444e-002f, -9.71456952e-002f, -4.16214759e-004f, -9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, -1.09057783e-001f, -1.09208910e-001f, 1.09057783e-001f, -7.58818830e-002f, 7.66295578e-002f, -3.28314629e-004f, -7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, -7.13950780e-002f, -7.14940135e-002f, 7.13950780e-002f, -9.61978444e-002f, 9.71456952e-002f, -4.16214759e-004f, -9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, -1.09057783e-001f, -1.09208910e-001f, -1.09057783e-001f, 7.58818830e-002f, 7.66295578e-002f, -3.28314629e-004f, 7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, -7.13950780e-002f, -7.14940135e-002f, -7.13950780e-002f, 9.61978444e-002f, 9.71456952e-002f, -4.16214759e-004f, 9.71456952e-002f, 0.00000000e+000f } },
{ { 1.40852210e-001f, 1.09057783e-001f, -1.09208910e-001f, -1.09057783e-001f, -7.58818830e-002f, -7.66295578e-002f, -3.28314629e-004f, 7.66295578e-002f, 0.00000000e+000f }, { 7.14251066e-002f, 7.13950780e-002f, -7.14940135e-002f, -7.13950780e-002f, -9.61978444e-002f, -9.71456952e-002f, -4.16214759e-004f, 9.71456952e-002f, 0.00000000e+000f } },
{ { 1.43315266e-001f, 0.00000000e+000f, -1.90399923e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 1.18020996e-001f, 0.00000000e+000f, 0.00000000e+000f }, { 7.26741039e-002f, 0.00000000e+000f, -1.24646009e-001f, 0.00000000e+000f, 0.00000000e+000f, 0.00000000e+000f, 1.49618920e-001f, 0.00000000e+000f, 0.00000000e+000f } },
};
const ALfloat (*AmbiMatrix)[2][MAX_AMBI_COEFFS] = hoa_mode ? AmbiMatrixHOA : AmbiMatrixFOA;
size_t count = hoa_mode ? 9 : 4;
size_t i;
static_assert(9 <= COUNTOF(device->Hrtf.Coeffs), "ALCdevice::Hrtf.Values/Coeffs size is too small");
static_assert(COUNTOF(AmbiPoints) <= HRTF_AMBI_MAX_CHANNELS, "HRTF_AMBI_MAX_CHANNELS is too small");
for(i = 0;i < count;i++)
{
device->Dry.Ambi.Map[i].Scale = 1.0f;
device->Dry.Ambi.Map[i].Index = i;
}
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
if(!hoa_mode)
{
device->FOAOut.Ambi = device->Dry.Ambi;
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
}
else
{
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
for(i = 0;i < 4;i++)
{
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
device->FOAOut.Ambi.Map[i].Index = i;
}
device->FOAOut.CoeffCount = 0;
ambiup_reset(device->AmbiUp, device);
}
memset(device->Hrtf.Coeffs, 0, sizeof(device->Hrtf.Coeffs));
device->Hrtf.IrSize = BuildBFormatHrtf(device->Hrtf.Handle,
device->Hrtf.Coeffs, device->Dry.NumChannels,
AmbiPoints, AmbiMatrix, COUNTOF(AmbiPoints)
);
/* Round up to the nearest multiple of 8 */
device->Hrtf.IrSize = (device->Hrtf.IrSize+7)&~7;
}
static void InitUhjPanning(ALCdevice *device)
{
ALsizei count = 3;
ALsizei i;
for(i = 0;i < count;i++)
{
ALsizei acn = FuMa2ACN[i];
device->Dry.Ambi.Map[i].Scale = 1.0f/FuMa2N3DScale[acn];
device->Dry.Ambi.Map[i].Index = acn;
}
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = count;
device->FOAOut.Ambi = device->Dry.Ambi;
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
}
void aluInitRenderer(ALCdevice *device, ALint hrtf_id, enum HrtfRequestMode hrtf_appreq, enum HrtfRequestMode hrtf_userreq)
{
const char *mode;
bool headphones;
int bs2blevel;
size_t i;
device->Hrtf.Handle = NULL;
al_string_clear(&device->Hrtf.Name);
device->Render_Mode = NormalRender;
memset(&device->Dry.Ambi, 0, sizeof(device->Dry.Ambi));
device->Dry.CoeffCount = 0;
device->Dry.NumChannels = 0;
if(device->FmtChans != DevFmtStereo)
{
ALuint speakermap[MAX_OUTPUT_CHANNELS];
const char *devname, *layout = NULL;
AmbDecConf conf, *pconf = NULL;
if(hrtf_appreq == Hrtf_Enable)
device->Hrtf.Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
ambdec_init(&conf);
devname = al_string_get_cstr(device->DeviceName);
switch(device->FmtChans)
{
case DevFmtQuad: layout = "quad"; break;
case DevFmtX51: layout = "surround51"; break;
case DevFmtX51Rear: layout = "surround51rear"; break;
case DevFmtX61: layout = "surround61"; break;
case DevFmtX71: layout = "surround71"; break;
/* Mono, Stereo, and Ambisonics output don't use custom decoders. */
case DevFmtMono:
case DevFmtStereo:
case DevFmtAmbi1:
case DevFmtAmbi2:
case DevFmtAmbi3:
break;
}
if(layout)
{
const char *fname;
if(ConfigValueStr(devname, "decoder", layout, &fname))
{
if(!ambdec_load(&conf, fname))
ERR("Failed to load layout file %s\n", fname);
else
{
if(conf.ChanMask > 0xffff)
ERR("Unsupported channel mask 0x%04x (max 0xffff)\n", conf.ChanMask);
else
{
if(MakeSpeakerMap(device, &conf, speakermap))
pconf = &conf;
}
}
}
}
if(pconf && GetConfigValueBool(devname, "decoder", "hq-mode", 0))
{
ambiup_free(device->AmbiUp);
device->AmbiUp = NULL;
if(!device->AmbiDecoder)
device->AmbiDecoder = bformatdec_alloc();
}
else
{
bformatdec_free(device->AmbiDecoder);
device->AmbiDecoder = NULL;
if(device->FmtChans > DevFmtAmbi1 && device->FmtChans <= DevFmtAmbi3)
{
if(!device->AmbiUp)
device->AmbiUp = ambiup_alloc();
}
else
{
ambiup_free(device->AmbiUp);
device->AmbiUp = NULL;
}
}
if(!pconf)
InitPanning(device);
else if(device->AmbiDecoder)
InitHQPanning(device, pconf, speakermap);
else
InitCustomPanning(device, pconf, speakermap);
ambdec_deinit(&conf);
return;
}
bformatdec_free(device->AmbiDecoder);
device->AmbiDecoder = NULL;
headphones = device->IsHeadphones;
if(device->Type != Loopback)
{
const char *mode;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "stereo-mode", &mode))
{
if(strcasecmp(mode, "headphones") == 0)
headphones = true;
else if(strcasecmp(mode, "speakers") == 0)
headphones = false;
else if(strcasecmp(mode, "auto") != 0)
ERR("Unexpected stereo-mode: %s\n", mode);
}
}
if(hrtf_userreq == Hrtf_Default)
{
bool usehrtf = (headphones && hrtf_appreq != Hrtf_Disable) ||
(hrtf_appreq == Hrtf_Enable);
if(!usehrtf) goto no_hrtf;
device->Hrtf.Status = ALC_HRTF_ENABLED_SOFT;
if(headphones && hrtf_appreq != Hrtf_Disable)
device->Hrtf.Status = ALC_HRTF_HEADPHONES_DETECTED_SOFT;
}
else
{
if(hrtf_userreq != Hrtf_Enable)
{
if(hrtf_appreq == Hrtf_Enable)
device->Hrtf.Status = ALC_HRTF_DENIED_SOFT;
goto no_hrtf;
}
device->Hrtf.Status = ALC_HRTF_REQUIRED_SOFT;
}
if(VECTOR_SIZE(device->Hrtf.List) == 0)
{
VECTOR_DEINIT(device->Hrtf.List);
device->Hrtf.List = EnumerateHrtf(device->DeviceName);
}
if(hrtf_id >= 0 && (size_t)hrtf_id < VECTOR_SIZE(device->Hrtf.List))
{
const HrtfEntry *entry = &VECTOR_ELEM(device->Hrtf.List, hrtf_id);
if(entry->hrtf->sampleRate == device->Frequency)
{
device->Hrtf.Handle = entry->hrtf;
al_string_copy(&device->Hrtf.Name, entry->name);
}
}
for(i = 0;!device->Hrtf.Handle && i < VECTOR_SIZE(device->Hrtf.List);i++)
{
const HrtfEntry *entry = &VECTOR_ELEM(device->Hrtf.List, i);
if(entry->hrtf->sampleRate == device->Frequency)
{
device->Hrtf.Handle = entry->hrtf;
al_string_copy(&device->Hrtf.Name, entry->name);
}
}
if(device->Hrtf.Handle)
{
bool hoa_mode;
device->Render_Mode = HrtfRender;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "hrtf-mode", &mode))
{
if(strcasecmp(mode, "full") == 0)
device->Render_Mode = HrtfRender;
else if(strcasecmp(mode, "basic") == 0)
device->Render_Mode = NormalRender;
else
ERR("Unexpected hrtf-mode: %s\n", mode);
}
if(device->Render_Mode == HrtfRender)
{
/* Don't bother with HOA when using full HRTF rendering. Nothing
* needs it, and it eases the CPU/memory load.
*/
ambiup_free(device->AmbiUp);
device->AmbiUp = NULL;
hoa_mode = false;
}
else
{
if(!device->AmbiUp)
device->AmbiUp = ambiup_alloc();
hoa_mode = true;
}
TRACE("%s HRTF rendering enabled, using \"%s\"\n",
((device->Render_Mode == HrtfRender) ? "Full" : "Basic"),
al_string_get_cstr(device->Hrtf.Name)
);
InitHrtfPanning(device, hoa_mode);
return;
}
device->Hrtf.Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
no_hrtf:
TRACE("HRTF disabled\n");
ambiup_free(device->AmbiUp);
device->AmbiUp = NULL;
bs2blevel = ((headphones && hrtf_appreq != Hrtf_Disable) ||
(hrtf_appreq == Hrtf_Enable)) ? 5 : 0;
if(device->Type != Loopback)
ConfigValueInt(al_string_get_cstr(device->DeviceName), NULL, "cf_level", &bs2blevel);
if(bs2blevel > 0 && bs2blevel <= 6)
{
device->Bs2b = al_calloc(16, sizeof(*device->Bs2b));
bs2b_set_params(device->Bs2b, bs2blevel, device->Frequency);
device->Render_Mode = StereoPair;
TRACE("BS2B enabled\n");
InitPanning(device);
return;
}
TRACE("BS2B disabled\n");
device->Render_Mode = NormalRender;
if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "stereo-panning", &mode))
{
if(strcasecmp(mode, "paired") == 0)
device->Render_Mode = StereoPair;
else if(strcasecmp(mode, "uhj") != 0)
ERR("Unexpected stereo-panning: %s\n", mode);
}
if(device->Render_Mode == NormalRender)
{
device->Uhj_Encoder = al_calloc(16, sizeof(Uhj2Encoder));
TRACE("UHJ enabled\n");
InitUhjPanning(device);
return;
}
TRACE("UHJ disabled\n");
InitPanning(device);
}
void aluInitEffectPanning(ALeffectslot *slot)
{
ALsizei i;
memset(slot->ChanMap, 0, sizeof(slot->ChanMap));
slot->NumChannels = 0;
for(i = 0;i < MAX_EFFECT_CHANNELS;i++)
{
slot->ChanMap[i].Scale = 1.0f;
slot->ChanMap[i].Index = i;
}
slot->NumChannels = i;
}
Reference in New Issue View Git Blame Copy Permalink