1304 lines
52 KiB
C
1304 lines
52 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2010 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include "alMain.h"
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#include "alAuxEffectSlot.h"
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#include "alu.h"
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#include "bool.h"
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#include "ambdec.h"
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#include "bformatdec.h"
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#include "uhjfilter.h"
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#include "bs2b.h"
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extern inline void CalcAngleCoeffs(ALfloat azimuth, ALfloat elevation, ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS]);
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static const ALsizei FuMa2ACN[MAX_AMBI_COEFFS] = {
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0, /* W */
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3, /* X */
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1, /* Y */
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2, /* Z */
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6, /* R */
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7, /* S */
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5, /* T */
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8, /* U */
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4, /* V */
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12, /* K */
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13, /* L */
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11, /* M */
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14, /* N */
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10, /* O */
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15, /* P */
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9, /* Q */
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};
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static const ALsizei ACN2ACN[MAX_AMBI_COEFFS] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9, 10, 11, 12, 13, 14, 15
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};
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/* NOTE: These are scale factors as applied to Ambisonics content. Decoder
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* coefficients should be divided by these values to get proper N3D scalings.
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*/
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static const ALfloat UnitScale[MAX_AMBI_COEFFS] = {
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1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
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1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f
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};
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static const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS] = {
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1.000000000f, /* ACN 0 (W), sqrt(1) */
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1.732050808f, /* ACN 1 (Y), sqrt(3) */
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1.732050808f, /* ACN 2 (Z), sqrt(3) */
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1.732050808f, /* ACN 3 (X), sqrt(3) */
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2.236067978f, /* ACN 4 (V), sqrt(5) */
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2.236067978f, /* ACN 5 (T), sqrt(5) */
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2.236067978f, /* ACN 6 (R), sqrt(5) */
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2.236067978f, /* ACN 7 (S), sqrt(5) */
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2.236067978f, /* ACN 8 (U), sqrt(5) */
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2.645751311f, /* ACN 9 (Q), sqrt(7) */
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2.645751311f, /* ACN 10 (O), sqrt(7) */
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2.645751311f, /* ACN 11 (M), sqrt(7) */
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2.645751311f, /* ACN 12 (K), sqrt(7) */
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2.645751311f, /* ACN 13 (L), sqrt(7) */
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2.645751311f, /* ACN 14 (N), sqrt(7) */
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2.645751311f, /* ACN 15 (P), sqrt(7) */
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};
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static const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS] = {
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1.414213562f, /* ACN 0 (W), sqrt(2) */
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1.732050808f, /* ACN 1 (Y), sqrt(3) */
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1.732050808f, /* ACN 2 (Z), sqrt(3) */
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1.732050808f, /* ACN 3 (X), sqrt(3) */
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1.936491673f, /* ACN 4 (V), sqrt(15)/2 */
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1.936491673f, /* ACN 5 (T), sqrt(15)/2 */
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2.236067978f, /* ACN 6 (R), sqrt(5) */
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1.936491673f, /* ACN 7 (S), sqrt(15)/2 */
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1.936491673f, /* ACN 8 (U), sqrt(15)/2 */
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2.091650066f, /* ACN 9 (Q), sqrt(35/8) */
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1.972026594f, /* ACN 10 (O), sqrt(35)/3 */
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2.231093404f, /* ACN 11 (M), sqrt(224/45) */
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2.645751311f, /* ACN 12 (K), sqrt(7) */
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2.231093404f, /* ACN 13 (L), sqrt(224/45) */
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1.972026594f, /* ACN 14 (N), sqrt(35)/3 */
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2.091650066f, /* ACN 15 (P), sqrt(35/8) */
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};
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void CalcDirectionCoeffs(const ALfloat dir[3], ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS])
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{
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/* Convert from OpenAL coords to Ambisonics. */
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ALfloat x = -dir[2];
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ALfloat y = -dir[0];
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ALfloat z = dir[1];
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/* Zeroth-order */
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coeffs[0] = 1.0f; /* ACN 0 = 1 */
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/* First-order */
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coeffs[1] = 1.732050808f * y; /* ACN 1 = sqrt(3) * Y */
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coeffs[2] = 1.732050808f * z; /* ACN 2 = sqrt(3) * Z */
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coeffs[3] = 1.732050808f * x; /* ACN 3 = sqrt(3) * X */
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/* Second-order */
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coeffs[4] = 3.872983346f * x * y; /* ACN 4 = sqrt(15) * X * Y */
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coeffs[5] = 3.872983346f * y * z; /* ACN 5 = sqrt(15) * Y * Z */
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coeffs[6] = 1.118033989f * (3.0f*z*z - 1.0f); /* ACN 6 = sqrt(5)/2 * (3*Z*Z - 1) */
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coeffs[7] = 3.872983346f * x * z; /* ACN 7 = sqrt(15) * X * Z */
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coeffs[8] = 1.936491673f * (x*x - y*y); /* ACN 8 = sqrt(15)/2 * (X*X - Y*Y) */
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/* Third-order */
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coeffs[9] = 2.091650066f * y * (3.0f*x*x - y*y); /* ACN 9 = sqrt(35/8) * Y * (3*X*X - Y*Y) */
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coeffs[10] = 10.246950766f * z * x * y; /* ACN 10 = sqrt(105) * Z * X * Y */
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coeffs[11] = 1.620185175f * y * (5.0f*z*z - 1.0f); /* ACN 11 = sqrt(21/8) * Y * (5*Z*Z - 1) */
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coeffs[12] = 1.322875656f * z * (5.0f*z*z - 3.0f); /* ACN 12 = sqrt(7)/2 * Z * (5*Z*Z - 3) */
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coeffs[13] = 1.620185175f * x * (5.0f*z*z - 1.0f); /* ACN 13 = sqrt(21/8) * X * (5*Z*Z - 1) */
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coeffs[14] = 5.123475383f * z * (x*x - y*y); /* ACN 14 = sqrt(105)/2 * Z * (X*X - Y*Y) */
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coeffs[15] = 2.091650066f * x * (x*x - 3.0f*y*y); /* ACN 15 = sqrt(35/8) * X * (X*X - 3*Y*Y) */
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if(spread > 0.0f)
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{
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/* Implement the spread by using a spherical source that subtends the
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* angle spread. See:
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* http://www.ppsloan.org/publications/StupidSH36.pdf - Appendix A3
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*
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* When adjusted for N3D normalization instead of SN3D, these
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* calculations are:
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*
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* ZH0 = -sqrt(pi) * (-1+ca);
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* ZH1 = 0.5*sqrt(pi) * sa*sa;
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* ZH2 = -0.5*sqrt(pi) * ca*(-1+ca)*(ca+1);
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* ZH3 = -0.125*sqrt(pi) * (-1+ca)*(ca+1)*(5*ca*ca - 1);
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* ZH4 = -0.125*sqrt(pi) * ca*(-1+ca)*(ca+1)*(7*ca*ca - 3);
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* ZH5 = -0.0625*sqrt(pi) * (-1+ca)*(ca+1)*(21*ca*ca*ca*ca - 14*ca*ca + 1);
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*
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* The gain of the source is compensated for size, so that the
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* loundness doesn't depend on the spread. Thus:
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*
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* ZH0 = 1.0f;
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* ZH1 = 0.5f * (ca+1.0f);
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* ZH2 = 0.5f * (ca+1.0f)*ca;
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* ZH3 = 0.125f * (ca+1.0f)*(5.0f*ca*ca - 1.0f);
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* ZH4 = 0.125f * (ca+1.0f)*(7.0f*ca*ca - 3.0f)*ca;
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* ZH5 = 0.0625f * (ca+1.0f)*(21.0f*ca*ca*ca*ca - 14.0f*ca*ca + 1.0f);
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*/
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ALfloat ca = cosf(spread * 0.5f);
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/* Increase the source volume by up to +3dB for a full spread. */
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ALfloat scale = sqrtf(1.0f + spread/F_TAU);
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ALfloat ZH0_norm = scale;
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ALfloat ZH1_norm = 0.5f * (ca+1.f) * scale;
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ALfloat ZH2_norm = 0.5f * (ca+1.f)*ca * scale;
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ALfloat ZH3_norm = 0.125f * (ca+1.f)*(5.f*ca*ca-1.f) * scale;
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/* Zeroth-order */
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coeffs[0] *= ZH0_norm;
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/* First-order */
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coeffs[1] *= ZH1_norm;
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coeffs[2] *= ZH1_norm;
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coeffs[3] *= ZH1_norm;
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/* Second-order */
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coeffs[4] *= ZH2_norm;
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coeffs[5] *= ZH2_norm;
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coeffs[6] *= ZH2_norm;
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coeffs[7] *= ZH2_norm;
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coeffs[8] *= ZH2_norm;
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/* Third-order */
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coeffs[9] *= ZH3_norm;
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coeffs[10] *= ZH3_norm;
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coeffs[11] *= ZH3_norm;
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coeffs[12] *= ZH3_norm;
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coeffs[13] *= ZH3_norm;
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coeffs[14] *= ZH3_norm;
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coeffs[15] *= ZH3_norm;
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}
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}
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void CalcAnglePairwiseCoeffs(ALfloat azimuth, ALfloat elevation, ALfloat spread, ALfloat coeffs[MAX_AMBI_COEFFS])
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{
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ALfloat sign = (azimuth < 0.0f) ? -1.0f : 1.0f;
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if(!(fabsf(azimuth) > F_PI_2))
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azimuth = minf(fabsf(azimuth) * F_PI_2 / (F_PI/6.0f), F_PI_2) * sign;
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CalcAngleCoeffs(azimuth, elevation, spread, coeffs);
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}
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void ComputeAmbientGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i;
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for(i = 0;i < numchans;i++)
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gains[i] = chancoeffs[i][0] * 1.414213562f * ingain;
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for(;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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void ComputeAmbientGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALfloat gain = 0.0f;
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ALsizei i;
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for(i = 0;i < numchans;i++)
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{
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if(chanmap[i].Index == 0)
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gain += chanmap[i].Scale;
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}
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gains[0] = gain * 1.414213562f * ingain;
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for(i = 1;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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void ComputePanningGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, ALsizei numcoeffs, const ALfloat coeffs[MAX_AMBI_COEFFS], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i, j;
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for(i = 0;i < numchans;i++)
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{
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float gain = 0.0f;
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for(j = 0;j < numcoeffs;j++)
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gain += chancoeffs[i][j]*coeffs[j];
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gains[i] = clampf(gain, 0.0f, 1.0f) * ingain;
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}
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for(;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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void ComputePanningGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, const ALfloat coeffs[MAX_AMBI_COEFFS], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i;
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for(i = 0;i < numchans;i++)
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gains[i] = chanmap[i].Scale * coeffs[chanmap[i].Index] * ingain;
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for(;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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void ComputeFirstOrderGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i, j;
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for(i = 0;i < numchans;i++)
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{
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float gain = 0.0f;
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for(j = 0;j < 4;j++)
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gain += chancoeffs[i][j] * mtx[j];
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gains[i] = clampf(gain, 0.0f, 1.0f) * ingain;
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}
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for(;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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void ComputeFirstOrderGainsBF(const BFChannelConfig *chanmap, ALsizei numchans, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i;
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for(i = 0;i < numchans;i++)
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gains[i] = chanmap[i].Scale * mtx[chanmap[i].Index] * ingain;
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for(;i < MAX_OUTPUT_CHANNELS;i++)
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gains[i] = 0.0f;
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}
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static inline const char *GetLabelFromChannel(enum Channel channel)
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{
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switch(channel)
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{
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case FrontLeft: return "front-left";
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case FrontRight: return "front-right";
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case FrontCenter: return "front-center";
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case LFE: return "lfe";
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case BackLeft: return "back-left";
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case BackRight: return "back-right";
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case BackCenter: return "back-center";
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case SideLeft: return "side-left";
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case SideRight: return "side-right";
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case UpperFrontLeft: return "upper-front-left";
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case UpperFrontRight: return "upper-front-right";
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case UpperBackLeft: return "upper-back-left";
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case UpperBackRight: return "upper-back-right";
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case LowerFrontLeft: return "lower-front-left";
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case LowerFrontRight: return "lower-front-right";
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case LowerBackLeft: return "lower-back-left";
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case LowerBackRight: return "lower-back-right";
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case Aux0: return "aux-0";
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case Aux1: return "aux-1";
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case Aux2: return "aux-2";
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case Aux3: return "aux-3";
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case Aux4: return "aux-4";
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case Aux5: return "aux-5";
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case Aux6: return "aux-6";
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case Aux7: return "aux-7";
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case Aux8: return "aux-8";
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case Aux9: return "aux-9";
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case Aux10: return "aux-10";
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case Aux11: return "aux-11";
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case Aux12: return "aux-12";
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case Aux13: return "aux-13";
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case Aux14: return "aux-14";
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case Aux15: return "aux-15";
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case InvalidChannel: break;
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}
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return "(unknown)";
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}
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typedef struct ChannelMap {
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enum Channel ChanName;
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ChannelConfig Config;
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} ChannelMap;
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static void SetChannelMap(const enum Channel devchans[MAX_OUTPUT_CHANNELS],
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ChannelConfig *ambicoeffs, const ChannelMap *chanmap,
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ALsizei count, ALsizei *outcount)
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{
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ALsizei maxchans = 0;
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ALsizei i, j;
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for(i = 0;i < count;i++)
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{
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ALint idx = GetChannelIndex(devchans, chanmap[i].ChanName);
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if(idx < 0)
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{
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ERR("Failed to find %s channel in device\n",
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GetLabelFromChannel(chanmap[i].ChanName));
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continue;
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}
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maxchans = maxi(maxchans, idx+1);
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for(j = 0;j < MAX_AMBI_COEFFS;j++)
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ambicoeffs[idx][j] = chanmap[i].Config[j];
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}
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*outcount = mini(maxchans, MAX_OUTPUT_CHANNELS);
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}
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static bool MakeSpeakerMap(ALCdevice *device, const AmbDecConf *conf, ALsizei speakermap[MAX_OUTPUT_CHANNELS])
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{
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ALsizei i;
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for(i = 0;i < conf->NumSpeakers;i++)
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{
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int c = -1;
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/* NOTE: AmbDec does not define any standard speaker names, however
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* for this to work we have to by able to find the output channel
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* the speaker definition corresponds to. Therefore, OpenAL Soft
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* requires these channel labels to be recognized:
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*
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* LF = Front left
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* RF = Front right
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* LS = Side left
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* RS = Side right
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* LB = Back left
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* RB = Back right
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* CE = Front center
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* CB = Back center
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*
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* Additionally, surround51 will acknowledge back speakers for side
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* channels, and surround51rear will acknowledge side speakers for
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* back channels, to avoid issues with an ambdec expecting 5.1 to
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* use the side channels when the device is configured for back,
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* and vice-versa.
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*/
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if(alstr_cmp_cstr(conf->Speakers[i].Name, "LF") == 0)
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c = GetChannelIdxByName(device->RealOut, FrontLeft);
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else if(alstr_cmp_cstr(conf->Speakers[i].Name, "RF") == 0)
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c = GetChannelIdxByName(device->RealOut, FrontRight);
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else if(alstr_cmp_cstr(conf->Speakers[i].Name, "CE") == 0)
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c = GetChannelIdxByName(device->RealOut, FrontCenter);
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else if(alstr_cmp_cstr(conf->Speakers[i].Name, "LS") == 0)
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{
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if(device->FmtChans == DevFmtX51Rear)
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c = GetChannelIdxByName(device->RealOut, BackLeft);
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else
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c = GetChannelIdxByName(device->RealOut, SideLeft);
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}
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else if(alstr_cmp_cstr(conf->Speakers[i].Name, "RS") == 0)
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{
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if(device->FmtChans == DevFmtX51Rear)
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c = GetChannelIdxByName(device->RealOut, BackRight);
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else
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c = GetChannelIdxByName(device->RealOut, SideRight);
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}
|
|
else if(alstr_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(alstr_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(alstr_cmp_cstr(conf->Speakers[i].Name, "CB") == 0)
|
|
c = GetChannelIdxByName(device->RealOut, BackCenter);
|
|
else
|
|
{
|
|
const char *name = alstr_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",
|
|
alstr_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, 1.19573156e-1f } },
|
|
{ FrontRight, { 5.00000000e-1f, -2.88675135e-1f, 0.0f, 1.19573156e-1f } },
|
|
}, 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[4] = {
|
|
{ SideLeft, { 3.33000782e-1f, 1.89084803e-1f, 0.0f, -2.00042375e-1f, -2.12307769e-2f, 0.0f, 0.0f, 0.0f, -1.14579885e-2f } },
|
|
{ FrontLeft, { 1.88542860e-1f, 1.27709292e-1f, 0.0f, 1.66295695e-1f, 7.30571517e-2f, 0.0f, 0.0f, 0.0f, 2.10901184e-2f } },
|
|
{ FrontRight, { 1.88542860e-1f, -1.27709292e-1f, 0.0f, 1.66295695e-1f, -7.30571517e-2f, 0.0f, 0.0f, 0.0f, 2.10901184e-2f } },
|
|
{ SideRight, { 3.33000782e-1f, -1.89084803e-1f, 0.0f, -2.00042375e-1f, 2.12307769e-2f, 0.0f, 0.0f, 0.0f, -1.14579885e-2f } },
|
|
}, X51RearCfg[4] = {
|
|
{ BackLeft, { 3.33000782e-1f, 1.89084803e-1f, 0.0f, -2.00042375e-1f, -2.12307769e-2f, 0.0f, 0.0f, 0.0f, -1.14579885e-2f } },
|
|
{ FrontLeft, { 1.88542860e-1f, 1.27709292e-1f, 0.0f, 1.66295695e-1f, 7.30571517e-2f, 0.0f, 0.0f, 0.0f, 2.10901184e-2f } },
|
|
{ FrontRight, { 1.88542860e-1f, -1.27709292e-1f, 0.0f, 1.66295695e-1f, -7.30571517e-2f, 0.0f, 0.0f, 0.0f, 2.10901184e-2f } },
|
|
{ BackRight, { 3.33000782e-1f, -1.89084803e-1f, 0.0f, -2.00042375e-1f, 2.12307769e-2f, 0.0f, 0.0f, 0.0f, -1.14579885e-2f } },
|
|
}, X61Cfg[6] = {
|
|
{ SideLeft, { 2.04460341e-1f, 2.17177926e-1f, 0.0f, -4.39996780e-2f, -2.60790269e-2f, 0.0f, 0.0f, 0.0f, -6.87239792e-2f } },
|
|
{ FrontLeft, { 1.58923161e-1f, 9.21772680e-2f, 0.0f, 1.59658796e-1f, 6.66278083e-2f, 0.0f, 0.0f, 0.0f, 3.84686854e-2f } },
|
|
{ FrontRight, { 1.58923161e-1f, -9.21772680e-2f, 0.0f, 1.59658796e-1f, -6.66278083e-2f, 0.0f, 0.0f, 0.0f, 3.84686854e-2f } },
|
|
{ SideRight, { 2.04460341e-1f, -2.17177926e-1f, 0.0f, -4.39996780e-2f, 2.60790269e-2f, 0.0f, 0.0f, 0.0f, -6.87239792e-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 InitNearFieldCtrl(ALCdevice *device, ALfloat ctrl_dist, ALsizei order, bool periphonic)
|
|
{
|
|
const char *devname = alstr_get_cstr(device->DeviceName);
|
|
ALsizei i;
|
|
|
|
if(GetConfigValueBool(devname, "decoder", "nfc", 1) && ctrl_dist > 0.0f)
|
|
{
|
|
/* NFC is only used when AvgSpeakerDist is greater than 0, and
|
|
* METERS_PER_UNIT is also greater than 0. In addition, NFC can only be
|
|
* used when rendering to an ambisonic buffer.
|
|
*/
|
|
device->AvgSpeakerDist = ctrl_dist;
|
|
|
|
device->Dry.NumChannelsPerOrder[0] = 1;
|
|
if(periphonic)
|
|
for(i = 1;i < order+1;i++)
|
|
device->Dry.NumChannelsPerOrder[i] = (i+1)*(i+1) - i*i;
|
|
else
|
|
for(i = 1;i < order+1;i++)
|
|
device->Dry.NumChannelsPerOrder[i] = (i*2+1) - ((i-1)*2+1);
|
|
for(;i < MAX_AMBI_ORDER+1;i++)
|
|
device->Dry.NumChannelsPerOrder[i] = 0;
|
|
}
|
|
}
|
|
|
|
static void InitDistanceComp(ALCdevice *device, const AmbDecConf *conf, const ALsizei speakermap[MAX_OUTPUT_CHANNELS])
|
|
{
|
|
const char *devname = alstr_get_cstr(device->DeviceName);
|
|
ALfloat maxdist = 0.0f;
|
|
ALsizei total = 0;
|
|
ALsizei i;
|
|
|
|
for(i = 0;i < conf->NumSpeakers;i++)
|
|
maxdist = maxf(maxdist, conf->Speakers[i].Distance);
|
|
|
|
if(GetConfigValueBool(devname, "decoder", "distance-comp", 1) && maxdist > 0.0f)
|
|
{
|
|
ALfloat srate = (ALfloat)device->Frequency;
|
|
for(i = 0;i < conf->NumSpeakers;i++)
|
|
{
|
|
ALsizei chan = speakermap[i];
|
|
ALfloat delay;
|
|
|
|
/* Distance compensation only delays in steps of the sample rate.
|
|
* This is a bit less accurate since the delay time falls to the
|
|
* nearest sample time, but it's far simpler as it doesn't have to
|
|
* deal with phase offsets. This means at 48khz, for instance, the
|
|
* distance delay will be in steps of about 7 millimeters.
|
|
*/
|
|
delay = floorf((maxdist-conf->Speakers[i].Distance) / SPEEDOFSOUNDMETRESPERSEC *
|
|
srate + 0.5f);
|
|
if(delay >= (ALfloat)MAX_DELAY_LENGTH)
|
|
ERR("Delay for speaker \"%s\" exceeds buffer length (%f >= %u)\n",
|
|
alstr_get_cstr(conf->Speakers[i].Name), delay, MAX_DELAY_LENGTH);
|
|
|
|
device->ChannelDelay[chan].Length = (ALsizei)clampf(
|
|
delay, 0.0f, (ALfloat)(MAX_DELAY_LENGTH-1)
|
|
);
|
|
device->ChannelDelay[chan].Gain = conf->Speakers[i].Distance / maxdist;
|
|
TRACE("Channel %u \"%s\" distance compensation: %d samples, %f gain\n", chan,
|
|
alstr_get_cstr(conf->Speakers[i].Name), device->ChannelDelay[chan].Length,
|
|
device->ChannelDelay[chan].Gain
|
|
);
|
|
|
|
/* Round up to the next 4th sample, so each channel buffer starts
|
|
* 16-byte aligned.
|
|
*/
|
|
total += RoundUp(device->ChannelDelay[chan].Length, 4);
|
|
}
|
|
}
|
|
|
|
if(total > 0)
|
|
{
|
|
device->ChannelDelay[0].Buffer = al_calloc(16, total * sizeof(ALfloat));
|
|
for(i = 1;i < MAX_OUTPUT_CHANNELS;i++)
|
|
{
|
|
size_t len = RoundUp(device->ChannelDelay[i-1].Length, 4);
|
|
device->ChannelDelay[i].Buffer = device->ChannelDelay[i-1].Buffer + len;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void InitPanning(ALCdevice *device)
|
|
{
|
|
const ChannelMap *chanmap = NULL;
|
|
ALsizei coeffcount = 0;
|
|
ALsizei count = 0;
|
|
ALsizei i, j;
|
|
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtMono:
|
|
count = COUNTOF(MonoCfg);
|
|
chanmap = MonoCfg;
|
|
coeffcount = 1;
|
|
break;
|
|
|
|
case DevFmtStereo:
|
|
count = COUNTOF(StereoCfg);
|
|
chanmap = StereoCfg;
|
|
coeffcount = 4;
|
|
break;
|
|
|
|
case DevFmtQuad:
|
|
count = COUNTOF(QuadCfg);
|
|
chanmap = QuadCfg;
|
|
coeffcount = 4;
|
|
break;
|
|
|
|
case DevFmtX51:
|
|
count = COUNTOF(X51SideCfg);
|
|
chanmap = X51SideCfg;
|
|
coeffcount = 9;
|
|
break;
|
|
|
|
case DevFmtX51Rear:
|
|
count = COUNTOF(X51RearCfg);
|
|
chanmap = X51RearCfg;
|
|
coeffcount = 9;
|
|
break;
|
|
|
|
case DevFmtX61:
|
|
count = COUNTOF(X61Cfg);
|
|
chanmap = X61Cfg;
|
|
coeffcount = 9;
|
|
break;
|
|
|
|
case DevFmtX71:
|
|
count = COUNTOF(X71Cfg);
|
|
chanmap = X71Cfg;
|
|
coeffcount = 16;
|
|
break;
|
|
|
|
case DevFmtAmbi3D:
|
|
break;
|
|
}
|
|
|
|
if(device->FmtChans == DevFmtAmbi3D)
|
|
{
|
|
const char *devname = alstr_get_cstr(device->DeviceName);
|
|
const ALsizei *acnmap = (device->AmbiLayout == AmbiLayout_FuMa) ? FuMa2ACN : ACN2ACN;
|
|
const ALfloat *n3dscale = (device->AmbiScale == AmbiNorm_FuMa) ? FuMa2N3DScale :
|
|
(device->AmbiScale == AmbiNorm_SN3D) ? SN3D2N3DScale :
|
|
/*(device->AmbiScale == AmbiNorm_N3D) ?*/ UnitScale;
|
|
ALfloat nfc_delay = 0.0f;
|
|
|
|
count = (device->AmbiOrder == 3) ? 16 :
|
|
(device->AmbiOrder == 2) ? 9 :
|
|
(device->AmbiOrder == 1) ? 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->AmbiOrder < 2)
|
|
{
|
|
device->FOAOut.Ambi = device->Dry.Ambi;
|
|
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
|
|
device->FOAOut.NumChannels = 0;
|
|
}
|
|
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;
|
|
device->FOAOut.NumChannels = 4;
|
|
|
|
ambiup_reset(device->AmbiUp, device);
|
|
}
|
|
|
|
if(ConfigValueFloat(devname, "decoder", "nfc-ref-delay", &nfc_delay) && nfc_delay > 0.0f)
|
|
{
|
|
nfc_delay = clampf(nfc_delay, 0.001f, 1000.0f);
|
|
InitNearFieldCtrl(device, nfc_delay * SPEEDOFSOUNDMETRESPERSEC,
|
|
device->AmbiOrder, true);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ALfloat w_scale, xyz_scale;
|
|
|
|
SetChannelMap(device->RealOut.ChannelName, device->Dry.Ambi.Coeffs,
|
|
chanmap, count, &device->Dry.NumChannels);
|
|
device->Dry.CoeffCount = coeffcount;
|
|
|
|
w_scale = (device->Dry.CoeffCount > 9) ? W_SCALE2D_THIRD :
|
|
(device->Dry.CoeffCount > 4) ? W_SCALE2D_SECOND : 1.0f;
|
|
xyz_scale = (device->Dry.CoeffCount > 9) ? XYZ_SCALE2D_THIRD :
|
|
(device->Dry.CoeffCount > 4) ? XYZ_SCALE2D_SECOND : 1.0f;
|
|
|
|
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
|
|
for(i = 0;i < device->Dry.NumChannels;i++)
|
|
{
|
|
device->FOAOut.Ambi.Coeffs[i][0] = device->Dry.Ambi.Coeffs[i][0] * w_scale;
|
|
for(j = 1;j < 4;j++)
|
|
device->FOAOut.Ambi.Coeffs[i][j] = device->Dry.Ambi.Coeffs[i][j] * xyz_scale;
|
|
}
|
|
device->FOAOut.CoeffCount = 4;
|
|
device->FOAOut.NumChannels = 0;
|
|
}
|
|
device->RealOut.NumChannels = 0;
|
|
}
|
|
|
|
static void InitCustomPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei speakermap[MAX_OUTPUT_CHANNELS])
|
|
{
|
|
ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
|
|
const ALfloat *coeff_scale = UnitScale;
|
|
ALfloat w_scale = 1.0f;
|
|
ALfloat xyz_scale = 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&AMBI_PERIPHONIC_MASK))
|
|
{
|
|
if(conf->ChanMask > 0x1ff)
|
|
{
|
|
w_scale = W_SCALE3D_THIRD;
|
|
xyz_scale = XYZ_SCALE3D_THIRD;
|
|
}
|
|
else if(conf->ChanMask > 0xf)
|
|
{
|
|
w_scale = W_SCALE3D_SECOND;
|
|
xyz_scale = XYZ_SCALE3D_SECOND;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(conf->ChanMask > 0x1ff)
|
|
{
|
|
w_scale = W_SCALE2D_THIRD;
|
|
xyz_scale = XYZ_SCALE2D_THIRD;
|
|
}
|
|
else if(conf->ChanMask > 0xf)
|
|
{
|
|
w_scale = W_SCALE2D_SECOND;
|
|
xyz_scale = XYZ_SCALE2D_SECOND;
|
|
}
|
|
}
|
|
|
|
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 < device->Dry.NumChannels;i++)
|
|
{
|
|
device->FOAOut.Ambi.Coeffs[i][0] = device->Dry.Ambi.Coeffs[i][0] * w_scale;
|
|
for(j = 1;j < 4;j++)
|
|
device->FOAOut.Ambi.Coeffs[i][j] = device->Dry.Ambi.Coeffs[i][j] * xyz_scale;
|
|
}
|
|
device->FOAOut.CoeffCount = 4;
|
|
device->FOAOut.NumChannels = 0;
|
|
|
|
device->RealOut.NumChannels = 0;
|
|
|
|
InitDistanceComp(device, conf, speakermap);
|
|
}
|
|
|
|
static void InitHQPanning(ALCdevice *device, const AmbDecConf *conf, const ALsizei speakermap[MAX_OUTPUT_CHANNELS])
|
|
{
|
|
ALfloat avg_dist;
|
|
ALsizei count;
|
|
ALsizei i;
|
|
|
|
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);
|
|
|
|
if(!(conf->ChanMask > 0xf))
|
|
{
|
|
device->FOAOut.Ambi = device->Dry.Ambi;
|
|
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
|
|
device->FOAOut.NumChannels = 0;
|
|
}
|
|
else
|
|
{
|
|
memset(&device->FOAOut.Ambi, 0, sizeof(device->FOAOut.Ambi));
|
|
if((conf->ChanMask&AMBI_PERIPHONIC_MASK))
|
|
{
|
|
count = 4;
|
|
for(i = 0;i < count;i++)
|
|
{
|
|
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
|
|
device->FOAOut.Ambi.Map[i].Index = i;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
static const int map[3] = { 0, 1, 3 };
|
|
count = 3;
|
|
for(i = 0;i < count;i++)
|
|
{
|
|
device->FOAOut.Ambi.Map[i].Scale = 1.0f;
|
|
device->FOAOut.Ambi.Map[i].Index = map[i];
|
|
}
|
|
}
|
|
device->FOAOut.CoeffCount = 0;
|
|
device->FOAOut.NumChannels = count;
|
|
}
|
|
|
|
device->RealOut.NumChannels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);
|
|
|
|
avg_dist = 0.0f;
|
|
for(i = 0;i < conf->NumSpeakers;i++)
|
|
avg_dist += conf->Speakers[i].Distance;
|
|
avg_dist /= (ALfloat)conf->NumSpeakers;
|
|
InitNearFieldCtrl(device, avg_dist,
|
|
(conf->ChanMask > 0x1ff) ? 3 : (conf->ChanMask > 0xf) ? 2 : 1,
|
|
!!(conf->ChanMask&AMBI_PERIPHONIC_MASK)
|
|
);
|
|
|
|
InitDistanceComp(device, conf, speakermap);
|
|
}
|
|
|
|
static void InitHrtfPanning(ALCdevice *device)
|
|
{
|
|
/* 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] = device->AmbiUp ? AmbiMatrixHOA :
|
|
AmbiMatrixFOA;
|
|
ALsizei count = device->AmbiUp ? 9 : 4;
|
|
ALsizei i;
|
|
|
|
static_assert(COUNTOF(AmbiPoints) <= HRTF_AMBI_MAX_CHANNELS, "HRTF_AMBI_MAX_CHANNELS is too small");
|
|
|
|
device->Hrtf = al_calloc(16, FAM_SIZE(DirectHrtfState, Chan, count));
|
|
|
|
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(device->AmbiUp)
|
|
{
|
|
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;
|
|
device->FOAOut.NumChannels = 4;
|
|
|
|
ambiup_reset(device->AmbiUp, device);
|
|
}
|
|
else
|
|
{
|
|
device->FOAOut.Ambi = device->Dry.Ambi;
|
|
device->FOAOut.CoeffCount = device->Dry.CoeffCount;
|
|
device->FOAOut.NumChannels = 0;
|
|
}
|
|
|
|
device->RealOut.NumChannels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);
|
|
|
|
BuildBFormatHrtf(device->HrtfHandle,
|
|
device->Hrtf, device->Dry.NumChannels, AmbiPoints, AmbiMatrix, COUNTOF(AmbiPoints)
|
|
);
|
|
|
|
InitNearFieldCtrl(device, device->HrtfHandle->distance, device->AmbiUp ? 2 : 1, true);
|
|
}
|
|
|
|
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;
|
|
device->FOAOut.NumChannels = 0;
|
|
|
|
device->RealOut.NumChannels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);
|
|
}
|
|
|
|
void aluInitRenderer(ALCdevice *device, ALint hrtf_id, enum HrtfRequestMode hrtf_appreq, enum HrtfRequestMode hrtf_userreq)
|
|
{
|
|
/* Hold the HRTF the device last used, in case it's used again. */
|
|
struct Hrtf *old_hrtf = device->HrtfHandle;
|
|
const char *mode;
|
|
bool headphones;
|
|
int bs2blevel;
|
|
size_t i;
|
|
|
|
al_free(device->Hrtf);
|
|
device->Hrtf = NULL;
|
|
device->HrtfHandle = NULL;
|
|
alstr_clear(&device->HrtfName);
|
|
device->Render_Mode = NormalRender;
|
|
|
|
memset(&device->Dry.Ambi, 0, sizeof(device->Dry.Ambi));
|
|
device->Dry.CoeffCount = 0;
|
|
device->Dry.NumChannels = 0;
|
|
for(i = 0;i < MAX_AMBI_ORDER+1;i++)
|
|
device->Dry.NumChannelsPerOrder[i] = 0;
|
|
|
|
device->AvgSpeakerDist = 0.0f;
|
|
memset(device->ChannelDelay, 0, sizeof(device->ChannelDelay));
|
|
for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
|
|
{
|
|
device->ChannelDelay[i].Gain = 1.0f;
|
|
device->ChannelDelay[i].Length = 0;
|
|
}
|
|
|
|
al_free(device->Stablizer);
|
|
device->Stablizer = NULL;
|
|
|
|
if(device->FmtChans != DevFmtStereo)
|
|
{
|
|
ALsizei speakermap[MAX_OUTPUT_CHANNELS];
|
|
const char *devname, *layout = NULL;
|
|
AmbDecConf conf, *pconf = NULL;
|
|
|
|
if(old_hrtf)
|
|
Hrtf_DecRef(old_hrtf);
|
|
old_hrtf = NULL;
|
|
if(hrtf_appreq == Hrtf_Enable)
|
|
device->HrtfStatus = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
|
|
|
|
ambdec_init(&conf);
|
|
|
|
devname = alstr_get_cstr(device->DeviceName);
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtQuad: layout = "quad"; break;
|
|
case DevFmtX51: /* fall-through */
|
|
case DevFmtX51Rear: layout = "surround51"; 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 DevFmtAmbi3D:
|
|
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 == DevFmtAmbi3D && device->AmbiOrder > 1)
|
|
{
|
|
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);
|
|
|
|
/* Enable the stablizer only for formats that have front-left, front-
|
|
* right, and front-center outputs.
|
|
*/
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtX51:
|
|
case DevFmtX51Rear:
|
|
case DevFmtX61:
|
|
case DevFmtX71:
|
|
if(GetConfigValueBool(devname, NULL, "front-stablizer", 0))
|
|
{
|
|
/* Initialize band-splitting filters for the front-left and
|
|
* front-right channels, with a crossover at 5khz (could be
|
|
* higher).
|
|
*/
|
|
ALfloat scale = (ALfloat)(5000.0 / device->Frequency);
|
|
FrontStablizer *stablizer = al_calloc(16, sizeof(*stablizer));
|
|
|
|
bandsplit_init(&stablizer->LFilter, scale);
|
|
stablizer->RFilter = stablizer->LFilter;
|
|
|
|
/* Initialize all-pass filters for all other channels. */
|
|
splitterap_init(&stablizer->APFilter[0], scale);
|
|
for(i = 1;i < (size_t)device->RealOut.NumChannels;i++)
|
|
stablizer->APFilter[i] = stablizer->APFilter[0];
|
|
|
|
device->Stablizer = stablizer;
|
|
}
|
|
break;
|
|
case DevFmtMono:
|
|
case DevFmtStereo:
|
|
case DevFmtQuad:
|
|
case DevFmtAmbi3D:
|
|
break;
|
|
}
|
|
TRACE("Front stablizer %s\n", device->Stablizer ? "enabled" : "disabled");
|
|
|
|
ambdec_deinit(&conf);
|
|
return;
|
|
}
|
|
|
|
bformatdec_free(device->AmbiDecoder);
|
|
device->AmbiDecoder = NULL;
|
|
|
|
headphones = device->IsHeadphones;
|
|
if(device->Type != Loopback)
|
|
{
|
|
const char *mode;
|
|
if(ConfigValueStr(alstr_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->HrtfStatus = ALC_HRTF_ENABLED_SOFT;
|
|
if(headphones && hrtf_appreq != Hrtf_Disable)
|
|
device->HrtfStatus = ALC_HRTF_HEADPHONES_DETECTED_SOFT;
|
|
}
|
|
else
|
|
{
|
|
if(hrtf_userreq != Hrtf_Enable)
|
|
{
|
|
if(hrtf_appreq == Hrtf_Enable)
|
|
device->HrtfStatus = ALC_HRTF_DENIED_SOFT;
|
|
goto no_hrtf;
|
|
}
|
|
device->HrtfStatus = ALC_HRTF_REQUIRED_SOFT;
|
|
}
|
|
|
|
if(VECTOR_SIZE(device->HrtfList) == 0)
|
|
{
|
|
VECTOR_DEINIT(device->HrtfList);
|
|
device->HrtfList = EnumerateHrtf(device->DeviceName);
|
|
}
|
|
|
|
if(hrtf_id >= 0 && (size_t)hrtf_id < VECTOR_SIZE(device->HrtfList))
|
|
{
|
|
const EnumeratedHrtf *entry = &VECTOR_ELEM(device->HrtfList, hrtf_id);
|
|
struct Hrtf *hrtf = GetLoadedHrtf(entry->hrtf);
|
|
if(hrtf && hrtf->sampleRate == device->Frequency)
|
|
{
|
|
device->HrtfHandle = hrtf;
|
|
alstr_copy(&device->HrtfName, entry->name);
|
|
}
|
|
else if(hrtf)
|
|
Hrtf_DecRef(hrtf);
|
|
}
|
|
|
|
for(i = 0;!device->HrtfHandle && i < VECTOR_SIZE(device->HrtfList);i++)
|
|
{
|
|
const EnumeratedHrtf *entry = &VECTOR_ELEM(device->HrtfList, i);
|
|
struct Hrtf *hrtf = GetLoadedHrtf(entry->hrtf);
|
|
if(hrtf && hrtf->sampleRate == device->Frequency)
|
|
{
|
|
device->HrtfHandle = hrtf;
|
|
alstr_copy(&device->HrtfName, entry->name);
|
|
}
|
|
else if(hrtf)
|
|
Hrtf_DecRef(hrtf);
|
|
}
|
|
|
|
if(device->HrtfHandle)
|
|
{
|
|
if(old_hrtf)
|
|
Hrtf_DecRef(old_hrtf);
|
|
old_hrtf = NULL;
|
|
|
|
device->Render_Mode = HrtfRender;
|
|
if(ConfigValueStr(alstr_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;
|
|
}
|
|
else
|
|
{
|
|
if(!device->AmbiUp)
|
|
device->AmbiUp = ambiup_alloc();
|
|
}
|
|
|
|
TRACE("%s HRTF rendering enabled, using \"%s\"\n",
|
|
((device->Render_Mode == HrtfRender) ? "Full" : "Basic"),
|
|
alstr_get_cstr(device->HrtfName)
|
|
);
|
|
InitHrtfPanning(device);
|
|
return;
|
|
}
|
|
device->HrtfStatus = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
|
|
|
|
no_hrtf:
|
|
if(old_hrtf)
|
|
Hrtf_DecRef(old_hrtf);
|
|
old_hrtf = NULL;
|
|
TRACE("HRTF disabled\n");
|
|
|
|
device->Render_Mode = StereoPair;
|
|
|
|
ambiup_free(device->AmbiUp);
|
|
device->AmbiUp = NULL;
|
|
|
|
bs2blevel = ((headphones && hrtf_appreq != Hrtf_Disable) ||
|
|
(hrtf_appreq == Hrtf_Enable)) ? 5 : 0;
|
|
if(device->Type != Loopback)
|
|
ConfigValueInt(alstr_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);
|
|
TRACE("BS2B enabled\n");
|
|
InitPanning(device);
|
|
return;
|
|
}
|
|
|
|
TRACE("BS2B disabled\n");
|
|
|
|
if(ConfigValueStr(alstr_get_cstr(device->DeviceName), NULL, "stereo-encoding", &mode))
|
|
{
|
|
if(strcasecmp(mode, "uhj") == 0)
|
|
device->Render_Mode = NormalRender;
|
|
else if(strcasecmp(mode, "panpot") != 0)
|
|
ERR("Unexpected stereo-encoding: %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;
|
|
}
|