1429 lines
42 KiB
C
1429 lines
42 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 2011 by Chris Robinson
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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 <stdlib.h>
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#include <ctype.h>
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "alMain.h"
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#include "alSource.h"
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#include "alu.h"
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#include "bformatdec.h"
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#include "hrtf.h"
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#include "alconfig.h"
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#include "compat.h"
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#include "almalloc.h"
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/* Current data set limits defined by the makehrtf utility. */
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#define MIN_IR_SIZE (8)
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#define MAX_IR_SIZE (512)
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#define MOD_IR_SIZE (8)
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#define MIN_FD_COUNT (1)
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#define MAX_FD_COUNT (16)
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#define MIN_FD_DISTANCE (50)
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#define MAX_FD_DISTANCE (2500)
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#define MIN_EV_COUNT (5)
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#define MAX_EV_COUNT (128)
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#define MIN_AZ_COUNT (1)
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#define MAX_AZ_COUNT (128)
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#define MAX_HRIR_DELAY (HRTF_HISTORY_LENGTH-1)
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struct HrtfEntry {
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struct HrtfEntry *next;
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struct Hrtf *handle;
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char filename[];
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};
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static const ALchar magicMarker00[8] = "MinPHR00";
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static const ALchar magicMarker01[8] = "MinPHR01";
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static const ALchar magicMarker02[8] = "MinPHR02";
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/* First value for pass-through coefficients (remaining are 0), used for omni-
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* directional sounds. */
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static const ALfloat PassthruCoeff = 0.707106781187f/*sqrt(0.5)*/;
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static ATOMIC_FLAG LoadedHrtfLock = ATOMIC_FLAG_INIT;
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static struct HrtfEntry *LoadedHrtfs = NULL;
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/* Calculate the elevation index given the polar elevation in radians. This
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* will return an index between 0 and (evcount - 1). Assumes the FPU is in
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* round-to-zero mode.
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*/
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static ALsizei CalcEvIndex(ALsizei evcount, ALfloat ev, ALfloat *mu)
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{
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ALsizei idx;
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ev = (F_PI_2+ev) * (evcount-1) / F_PI;
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idx = mini(fastf2i(ev), evcount-1);
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*mu = ev - idx;
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return idx;
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}
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/* Calculate the azimuth index given the polar azimuth in radians. This will
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* return an index between 0 and (azcount - 1). Assumes the FPU is in round-to-
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* zero mode.
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*/
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static ALsizei CalcAzIndex(ALsizei azcount, ALfloat az, ALfloat *mu)
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{
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ALsizei idx;
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az = (F_TAU+az) * azcount / F_TAU;
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idx = fastf2i(az) % azcount;
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*mu = az - floorf(az);
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return idx;
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}
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/* Calculates static HRIR coefficients and delays for the given polar elevation
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* and azimuth in radians. The coefficients are normalized.
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*/
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void GetHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat spread,
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ALfloat (*restrict coeffs)[2], ALsizei *delays)
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{
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ALsizei evidx, azidx, idx[4];
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ALsizei evoffset;
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ALfloat emu, amu[2];
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ALfloat blend[4];
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ALfloat dirfact;
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ALsizei i, c;
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dirfact = 1.0f - (spread / F_TAU);
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/* Claculate the lower elevation index. */
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evidx = CalcEvIndex(Hrtf->evCount, elevation, &emu);
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evoffset = Hrtf->evOffset[evidx];
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/* Calculate lower azimuth index. */
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azidx= CalcAzIndex(Hrtf->azCount[evidx], azimuth, &amu[0]);
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/* Calculate the lower HRIR indices. */
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idx[0] = evoffset + azidx;
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idx[1] = evoffset + ((azidx+1) % Hrtf->azCount[evidx]);
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if(evidx < Hrtf->evCount-1)
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{
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/* Increment elevation to the next (upper) index. */
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evidx++;
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evoffset = Hrtf->evOffset[evidx];
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/* Calculate upper azimuth index. */
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azidx = CalcAzIndex(Hrtf->azCount[evidx], azimuth, &amu[1]);
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/* Calculate the upper HRIR indices. */
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idx[2] = evoffset + azidx;
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idx[3] = evoffset + ((azidx+1) % Hrtf->azCount[evidx]);
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}
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else
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{
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/* If the lower elevation is the top index, the upper elevation is the
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* same as the lower.
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*/
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amu[1] = amu[0];
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idx[2] = idx[0];
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idx[3] = idx[1];
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}
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/* Calculate bilinear blending weights, attenuated according to the
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* directional panning factor.
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*/
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blend[0] = (1.0f-emu) * (1.0f-amu[0]) * dirfact;
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blend[1] = (1.0f-emu) * ( amu[0]) * dirfact;
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blend[2] = ( emu) * (1.0f-amu[1]) * dirfact;
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blend[3] = ( emu) * ( amu[1]) * dirfact;
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/* Calculate the blended HRIR delays. */
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delays[0] = fastf2i(
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Hrtf->delays[idx[0]][0]*blend[0] + Hrtf->delays[idx[1]][0]*blend[1] +
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Hrtf->delays[idx[2]][0]*blend[2] + Hrtf->delays[idx[3]][0]*blend[3] + 0.5f
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);
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delays[1] = fastf2i(
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Hrtf->delays[idx[0]][1]*blend[0] + Hrtf->delays[idx[1]][1]*blend[1] +
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Hrtf->delays[idx[2]][1]*blend[2] + Hrtf->delays[idx[3]][1]*blend[3] + 0.5f
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);
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/* Calculate the sample offsets for the HRIR indices. */
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idx[0] *= Hrtf->irSize;
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idx[1] *= Hrtf->irSize;
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idx[2] *= Hrtf->irSize;
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idx[3] *= Hrtf->irSize;
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coeffs = ASSUME_ALIGNED(coeffs, 16);
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/* Calculate the blended HRIR coefficients. */
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coeffs[0][0] = PassthruCoeff * (1.0f-dirfact);
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coeffs[0][1] = PassthruCoeff * (1.0f-dirfact);
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for(i = 1;i < Hrtf->irSize;i++)
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{
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coeffs[i][0] = 0.0f;
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coeffs[i][1] = 0.0f;
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}
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for(c = 0;c < 4;c++)
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{
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const ALfloat (*restrict srccoeffs)[2] = ASSUME_ALIGNED(Hrtf->coeffs+idx[c], 16);
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for(i = 0;i < Hrtf->irSize;i++)
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{
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coeffs[i][0] += srccoeffs[i][0] * blend[c];
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coeffs[i][1] += srccoeffs[i][1] * blend[c];
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}
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}
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}
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void BuildBFormatHrtf(const struct Hrtf *Hrtf, DirectHrtfState *state, ALsizei NumChannels, const ALfloat (*restrict AmbiPoints)[2], const ALfloat (*restrict AmbiMatrix)[2][MAX_AMBI_COEFFS], ALsizei AmbiCount)
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{
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/* Set this to 2 for dual-band HRTF processing. May require a higher quality
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* band-splitter, or better calculation of the new IR length to deal with the
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* tail generated by the filter.
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*/
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#define NUM_BANDS 2
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BandSplitter splitter;
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ALsizei idx[HRTF_AMBI_MAX_CHANNELS];
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ALsizei min_delay = HRTF_HISTORY_LENGTH;
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ALfloat temps[3][HRIR_LENGTH];
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ALsizei max_length = 0;
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ALsizei i, c, b;
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for(c = 0;c < AmbiCount;c++)
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{
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ALuint evidx, azidx;
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ALuint evoffset;
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ALuint azcount;
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/* Calculate elevation index. */
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evidx = (ALsizei)floorf((F_PI_2 + AmbiPoints[c][0]) *
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(Hrtf->evCount-1)/F_PI + 0.5f);
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evidx = mini(evidx, Hrtf->evCount-1);
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azcount = Hrtf->azCount[evidx];
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evoffset = Hrtf->evOffset[evidx];
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/* Calculate azimuth index for this elevation. */
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azidx = (ALsizei)floorf((F_TAU+AmbiPoints[c][1]) *
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azcount/F_TAU + 0.5f) % azcount;
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/* Calculate indices for left and right channels. */
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idx[c] = evoffset + azidx;
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min_delay = mini(min_delay, mini(Hrtf->delays[idx[c]][0], Hrtf->delays[idx[c]][1]));
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}
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memset(temps, 0, sizeof(temps));
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bandsplit_init(&splitter, 400.0f / (ALfloat)Hrtf->sampleRate);
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for(c = 0;c < AmbiCount;c++)
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{
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const ALfloat (*fir)[2] = &Hrtf->coeffs[idx[c] * Hrtf->irSize];
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ALsizei ldelay = Hrtf->delays[idx[c]][0] - min_delay;
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ALsizei rdelay = Hrtf->delays[idx[c]][1] - min_delay;
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max_length = maxi(max_length,
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mini(maxi(ldelay, rdelay) + Hrtf->irSize, HRIR_LENGTH)
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);
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if(NUM_BANDS == 1)
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{
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for(i = 0;i < NumChannels;++i)
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{
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ALsizei lidx = ldelay, ridx = rdelay;
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ALsizei j = 0;
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while(lidx < HRIR_LENGTH && ridx < HRIR_LENGTH && j < Hrtf->irSize)
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{
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state->Chan[i].Coeffs[lidx++][0] += fir[j][0] * AmbiMatrix[c][0][i];
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state->Chan[i].Coeffs[ridx++][1] += fir[j][1] * AmbiMatrix[c][0][i];
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j++;
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}
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}
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}
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else
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{
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/* Band-split left HRIR into low and high frequency responses. */
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bandsplit_clear(&splitter);
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for(i = 0;i < Hrtf->irSize;i++)
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temps[2][i] = fir[i][0];
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bandsplit_process(&splitter, temps[0], temps[1], temps[2], HRIR_LENGTH);
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/* Apply left ear response with delay. */
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for(i = 0;i < NumChannels;++i)
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{
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for(b = 0;b < NUM_BANDS;b++)
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{
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ALsizei lidx = ldelay;
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ALsizei j = 0;
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while(lidx < HRIR_LENGTH)
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state->Chan[i].Coeffs[lidx++][0] += temps[b][j++] * AmbiMatrix[c][b][i];
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}
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}
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/* Band-split right HRIR into low and high frequency responses. */
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bandsplit_clear(&splitter);
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for(i = 0;i < Hrtf->irSize;i++)
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temps[2][i] = fir[i][1];
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bandsplit_process(&splitter, temps[0], temps[1], temps[2], HRIR_LENGTH);
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/* Apply right ear response with delay. */
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for(i = 0;i < NumChannels;++i)
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{
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for(b = 0;b < NUM_BANDS;b++)
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{
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ALsizei ridx = rdelay;
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ALsizei j = 0;
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while(ridx < HRIR_LENGTH)
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state->Chan[i].Coeffs[ridx++][1] += temps[b][j++] * AmbiMatrix[c][b][i];
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}
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}
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}
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}
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/* Round up to the next IR size multiple. */
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max_length += MOD_IR_SIZE-1;
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max_length -= max_length%MOD_IR_SIZE;
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TRACE("Skipped min delay: %d, new combined length: %d\n", min_delay, max_length);
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state->IrSize = max_length;
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#undef NUM_BANDS
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}
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static struct Hrtf *CreateHrtfStore(ALuint rate, ALsizei irSize,
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ALfloat distance, ALsizei evCount, ALsizei irCount, const ALubyte *azCount,
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const ALushort *evOffset, const ALfloat (*coeffs)[2], const ALubyte (*delays)[2],
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const char *filename)
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{
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struct Hrtf *Hrtf;
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size_t total;
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total = sizeof(struct Hrtf);
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total += sizeof(Hrtf->azCount[0])*evCount;
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total = RoundUp(total, sizeof(ALushort)); /* Align for ushort fields */
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total += sizeof(Hrtf->evOffset[0])*evCount;
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total = RoundUp(total, 16); /* Align for coefficients using SIMD */
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total += sizeof(Hrtf->coeffs[0])*irSize*irCount;
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total += sizeof(Hrtf->delays[0])*irCount;
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Hrtf = al_calloc(16, total);
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if(Hrtf == NULL)
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ERR("Out of memory allocating storage for %s.\n", filename);
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else
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{
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uintptr_t offset = sizeof(struct Hrtf);
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char *base = (char*)Hrtf;
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ALushort *_evOffset;
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ALubyte *_azCount;
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ALubyte (*_delays)[2];
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ALfloat (*_coeffs)[2];
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ALsizei i;
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InitRef(&Hrtf->ref, 0);
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Hrtf->sampleRate = rate;
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Hrtf->irSize = irSize;
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Hrtf->distance = distance;
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Hrtf->evCount = evCount;
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/* Set up pointers to storage following the main HRTF struct. */
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_azCount = (ALubyte*)(base + offset); Hrtf->azCount = _azCount;
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offset += sizeof(_azCount[0])*evCount;
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offset = RoundUp(offset, sizeof(ALushort)); /* Align for ushort fields */
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_evOffset = (ALushort*)(base + offset); Hrtf->evOffset = _evOffset;
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offset += sizeof(_evOffset[0])*evCount;
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offset = RoundUp(offset, 16); /* Align for coefficients using SIMD */
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_coeffs = (ALfloat(*)[2])(base + offset); Hrtf->coeffs = _coeffs;
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offset += sizeof(_coeffs[0])*irSize*irCount;
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_delays = (ALubyte(*)[2])(base + offset); Hrtf->delays = _delays;
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offset += sizeof(_delays[0])*irCount;
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/* Copy input data to storage. */
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for(i = 0;i < evCount;i++) _azCount[i] = azCount[i];
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for(i = 0;i < evCount;i++) _evOffset[i] = evOffset[i];
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for(i = 0;i < irSize*irCount;i++)
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{
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_coeffs[i][0] = coeffs[i][0];
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_coeffs[i][1] = coeffs[i][1];
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}
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for(i = 0;i < irCount;i++)
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{
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_delays[i][0] = delays[i][0];
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_delays[i][1] = delays[i][1];
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}
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assert(offset == total);
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}
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return Hrtf;
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}
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static ALubyte GetLE_ALubyte(const ALubyte **data, size_t *len)
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{
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ALubyte ret = (*data)[0];
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*data += 1; *len -= 1;
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return ret;
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}
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static ALshort GetLE_ALshort(const ALubyte **data, size_t *len)
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{
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ALshort ret = (*data)[0] | ((*data)[1]<<8);
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*data += 2; *len -= 2;
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return ret;
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}
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static ALushort GetLE_ALushort(const ALubyte **data, size_t *len)
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{
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ALushort ret = (*data)[0] | ((*data)[1]<<8);
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*data += 2; *len -= 2;
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return ret;
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}
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static ALint GetLE_ALint24(const ALubyte **data, size_t *len)
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{
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ALint ret = (*data)[0] | ((*data)[1]<<8) | ((*data)[2]<<16);
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*data += 3; *len -= 3;
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return (ret^0x800000) - 0x800000;
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}
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static ALuint GetLE_ALuint(const ALubyte **data, size_t *len)
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{
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ALuint ret = (*data)[0] | ((*data)[1]<<8) | ((*data)[2]<<16) | ((*data)[3]<<24);
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*data += 4; *len -= 4;
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return ret;
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}
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static const ALubyte *Get_ALubytePtr(const ALubyte **data, size_t *len, size_t size)
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{
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const ALubyte *ret = *data;
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*data += size; *len -= size;
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return ret;
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}
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static struct Hrtf *LoadHrtf00(const ALubyte *data, size_t datalen, const char *filename)
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{
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struct Hrtf *Hrtf = NULL;
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ALboolean failed = AL_FALSE;
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ALuint rate = 0;
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ALushort irCount = 0;
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ALushort irSize = 0;
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ALubyte evCount = 0;
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ALubyte *azCount = NULL;
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ALushort *evOffset = NULL;
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ALfloat (*coeffs)[2] = NULL;
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ALubyte (*delays)[2] = NULL;
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ALsizei i, j;
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if(datalen < 9)
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{
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ERR("Unexpected end of %s data (req %d, rem "SZFMT")\n", filename, 9, datalen);
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return NULL;
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}
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rate = GetLE_ALuint(&data, &datalen);
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irCount = GetLE_ALushort(&data, &datalen);
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irSize = GetLE_ALushort(&data, &datalen);
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evCount = GetLE_ALubyte(&data, &datalen);
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if(irSize < MIN_IR_SIZE || irSize > MAX_IR_SIZE || (irSize%MOD_IR_SIZE))
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{
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ERR("Unsupported HRIR size: irSize=%d (%d to %d by %d)\n",
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irSize, MIN_IR_SIZE, MAX_IR_SIZE, MOD_IR_SIZE);
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failed = AL_TRUE;
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}
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if(evCount < MIN_EV_COUNT || evCount > MAX_EV_COUNT)
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{
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ERR("Unsupported elevation count: evCount=%d (%d to %d)\n",
|
|
evCount, MIN_EV_COUNT, MAX_EV_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(failed)
|
|
return NULL;
|
|
|
|
if(datalen < evCount*2u)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT")\n", filename, evCount*2, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
azCount = malloc(sizeof(azCount[0])*evCount);
|
|
evOffset = malloc(sizeof(evOffset[0])*evCount);
|
|
if(azCount == NULL || evOffset == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
evOffset[0] = GetLE_ALushort(&data, &datalen);
|
|
for(i = 1;i < evCount;i++)
|
|
{
|
|
evOffset[i] = GetLE_ALushort(&data, &datalen);
|
|
if(evOffset[i] <= evOffset[i-1])
|
|
{
|
|
ERR("Invalid evOffset: evOffset[%d]=%d (last=%d)\n",
|
|
i, evOffset[i], evOffset[i-1]);
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
azCount[i-1] = evOffset[i] - evOffset[i-1];
|
|
if(azCount[i-1] < MIN_AZ_COUNT || azCount[i-1] > MAX_AZ_COUNT)
|
|
{
|
|
ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
|
|
i-1, azCount[i-1], MIN_AZ_COUNT, MAX_AZ_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
if(irCount <= evOffset[i-1])
|
|
{
|
|
ERR("Invalid evOffset: evOffset[%d]=%d (irCount=%d)\n",
|
|
i-1, evOffset[i-1], irCount);
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
azCount[i-1] = irCount - evOffset[i-1];
|
|
if(azCount[i-1] < MIN_AZ_COUNT || azCount[i-1] > MAX_AZ_COUNT)
|
|
{
|
|
ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
|
|
i-1, azCount[i-1], MIN_AZ_COUNT, MAX_AZ_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
coeffs = malloc(sizeof(coeffs[0])*irSize*irCount);
|
|
delays = malloc(sizeof(delays[0])*irCount);
|
|
if(coeffs == NULL || delays == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
size_t reqsize = 2*irSize*irCount + irCount;
|
|
if(datalen < reqsize)
|
|
{
|
|
ERR("Unexpected end of %s data (req "SZFMT", rem "SZFMT")\n",
|
|
filename, reqsize, datalen);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
coeffs[i*irSize + j][0] = GetLE_ALshort(&data, &datalen) / 32768.0f;
|
|
}
|
|
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
delays[i][0] = GetLE_ALubyte(&data, &datalen);
|
|
if(delays[i][0] > MAX_HRIR_DELAY)
|
|
{
|
|
ERR("Invalid delays[%d]: %d (%d)\n", i, delays[i][0], MAX_HRIR_DELAY);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
/* Mirror the left ear responses to the right ear. */
|
|
for(i = 0;i < evCount;i++)
|
|
{
|
|
ALushort evoffset = evOffset[i];
|
|
ALubyte azcount = azCount[i];
|
|
for(j = 0;j < azcount;j++)
|
|
{
|
|
ALsizei lidx = evoffset + j;
|
|
ALsizei ridx = evoffset + ((azcount-j) % azcount);
|
|
ALsizei k;
|
|
|
|
for(k = 0;k < irSize;k++)
|
|
coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
|
|
delays[ridx][1] = delays[lidx][0];
|
|
}
|
|
}
|
|
|
|
Hrtf = CreateHrtfStore(rate, irSize, 0.0f, evCount, irCount, azCount,
|
|
evOffset, coeffs, delays, filename);
|
|
}
|
|
|
|
free(azCount);
|
|
free(evOffset);
|
|
free(coeffs);
|
|
free(delays);
|
|
return Hrtf;
|
|
}
|
|
|
|
static struct Hrtf *LoadHrtf01(const ALubyte *data, size_t datalen, const char *filename)
|
|
{
|
|
struct Hrtf *Hrtf = NULL;
|
|
ALboolean failed = AL_FALSE;
|
|
ALuint rate = 0;
|
|
ALushort irCount = 0;
|
|
ALushort irSize = 0;
|
|
ALubyte evCount = 0;
|
|
const ALubyte *azCount = NULL;
|
|
ALushort *evOffset = NULL;
|
|
ALfloat (*coeffs)[2] = NULL;
|
|
ALubyte (*delays)[2] = NULL;
|
|
ALsizei i, j;
|
|
|
|
if(datalen < 6)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT"\n", filename, 6, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
rate = GetLE_ALuint(&data, &datalen);
|
|
|
|
irSize = GetLE_ALubyte(&data, &datalen);
|
|
|
|
evCount = GetLE_ALubyte(&data, &datalen);
|
|
|
|
if(irSize < MIN_IR_SIZE || irSize > MAX_IR_SIZE || (irSize%MOD_IR_SIZE))
|
|
{
|
|
ERR("Unsupported HRIR size: irSize=%d (%d to %d by %d)\n",
|
|
irSize, MIN_IR_SIZE, MAX_IR_SIZE, MOD_IR_SIZE);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(evCount < MIN_EV_COUNT || evCount > MAX_EV_COUNT)
|
|
{
|
|
ERR("Unsupported elevation count: evCount=%d (%d to %d)\n",
|
|
evCount, MIN_EV_COUNT, MAX_EV_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(failed)
|
|
return NULL;
|
|
|
|
if(datalen < evCount)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT"\n", filename, evCount, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
azCount = Get_ALubytePtr(&data, &datalen, evCount);
|
|
|
|
evOffset = malloc(sizeof(evOffset[0])*evCount);
|
|
if(azCount == NULL || evOffset == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
for(i = 0;i < evCount;i++)
|
|
{
|
|
if(azCount[i] < MIN_AZ_COUNT || azCount[i] > MAX_AZ_COUNT)
|
|
{
|
|
ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
|
|
i, azCount[i], MIN_AZ_COUNT, MAX_AZ_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
evOffset[0] = 0;
|
|
irCount = azCount[0];
|
|
for(i = 1;i < evCount;i++)
|
|
{
|
|
evOffset[i] = evOffset[i-1] + azCount[i-1];
|
|
irCount += azCount[i];
|
|
}
|
|
|
|
coeffs = malloc(sizeof(coeffs[0])*irSize*irCount);
|
|
delays = malloc(sizeof(delays[0])*irCount);
|
|
if(coeffs == NULL || delays == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
size_t reqsize = 2*irSize*irCount + irCount;
|
|
if(datalen < reqsize)
|
|
{
|
|
ERR("Unexpected end of %s data (req "SZFMT", rem "SZFMT"\n",
|
|
filename, reqsize, datalen);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
coeffs[i*irSize + j][0] = GetLE_ALshort(&data, &datalen) / 32768.0f;
|
|
}
|
|
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
delays[i][0] = GetLE_ALubyte(&data, &datalen);
|
|
if(delays[i][0] > MAX_HRIR_DELAY)
|
|
{
|
|
ERR("Invalid delays[%d]: %d (%d)\n", i, delays[i][0], MAX_HRIR_DELAY);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
/* Mirror the left ear responses to the right ear. */
|
|
for(i = 0;i < evCount;i++)
|
|
{
|
|
ALushort evoffset = evOffset[i];
|
|
ALubyte azcount = azCount[i];
|
|
for(j = 0;j < azcount;j++)
|
|
{
|
|
ALsizei lidx = evoffset + j;
|
|
ALsizei ridx = evoffset + ((azcount-j) % azcount);
|
|
ALsizei k;
|
|
|
|
for(k = 0;k < irSize;k++)
|
|
coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
|
|
delays[ridx][1] = delays[lidx][0];
|
|
}
|
|
}
|
|
|
|
Hrtf = CreateHrtfStore(rate, irSize, 0.0f, evCount, irCount, azCount,
|
|
evOffset, coeffs, delays, filename);
|
|
}
|
|
|
|
free(evOffset);
|
|
free(coeffs);
|
|
free(delays);
|
|
return Hrtf;
|
|
}
|
|
|
|
#define SAMPLETYPE_S16 0
|
|
#define SAMPLETYPE_S24 1
|
|
|
|
#define CHANTYPE_LEFTONLY 0
|
|
#define CHANTYPE_LEFTRIGHT 1
|
|
|
|
static struct Hrtf *LoadHrtf02(const ALubyte *data, size_t datalen, const char *filename)
|
|
{
|
|
struct Hrtf *Hrtf = NULL;
|
|
ALboolean failed = AL_FALSE;
|
|
ALuint rate = 0;
|
|
ALubyte sampleType;
|
|
ALubyte channelType;
|
|
ALushort irCount = 0;
|
|
ALushort irSize = 0;
|
|
ALubyte fdCount = 0;
|
|
ALushort distance = 0;
|
|
ALubyte evCount = 0;
|
|
const ALubyte *azCount = NULL;
|
|
ALushort *evOffset = NULL;
|
|
ALfloat (*coeffs)[2] = NULL;
|
|
ALubyte (*delays)[2] = NULL;
|
|
ALsizei i, j;
|
|
|
|
if(datalen < 8)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT"\n", filename, 8, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
rate = GetLE_ALuint(&data, &datalen);
|
|
sampleType = GetLE_ALubyte(&data, &datalen);
|
|
channelType = GetLE_ALubyte(&data, &datalen);
|
|
|
|
irSize = GetLE_ALubyte(&data, &datalen);
|
|
|
|
fdCount = GetLE_ALubyte(&data, &datalen);
|
|
|
|
if(sampleType > SAMPLETYPE_S24)
|
|
{
|
|
ERR("Unsupported sample type: %d\n", sampleType);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(channelType > CHANTYPE_LEFTRIGHT)
|
|
{
|
|
ERR("Unsupported channel type: %d\n", channelType);
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
if(irSize < MIN_IR_SIZE || irSize > MAX_IR_SIZE || (irSize%MOD_IR_SIZE))
|
|
{
|
|
ERR("Unsupported HRIR size: irSize=%d (%d to %d by %d)\n",
|
|
irSize, MIN_IR_SIZE, MAX_IR_SIZE, MOD_IR_SIZE);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(fdCount != 1)
|
|
{
|
|
ERR("Multiple field-depths not supported: fdCount=%d (%d to %d)\n",
|
|
evCount, MIN_FD_COUNT, MAX_FD_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(failed)
|
|
return NULL;
|
|
|
|
for(i = 0;i < fdCount;i++)
|
|
{
|
|
if(datalen < 3)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT"\n", filename, 3, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
distance = GetLE_ALushort(&data, &datalen);
|
|
if(distance < MIN_FD_DISTANCE || distance > MAX_FD_DISTANCE)
|
|
{
|
|
ERR("Unsupported field distance: distance=%d (%dmm to %dmm)\n",
|
|
distance, MIN_FD_DISTANCE, MAX_FD_DISTANCE);
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
evCount = GetLE_ALubyte(&data, &datalen);
|
|
if(evCount < MIN_EV_COUNT || evCount > MAX_EV_COUNT)
|
|
{
|
|
ERR("Unsupported elevation count: evCount=%d (%d to %d)\n",
|
|
evCount, MIN_EV_COUNT, MAX_EV_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
if(failed)
|
|
return NULL;
|
|
|
|
if(datalen < evCount)
|
|
{
|
|
ERR("Unexpected end of %s data (req %d, rem "SZFMT"\n", filename, evCount, datalen);
|
|
return NULL;
|
|
}
|
|
|
|
azCount = Get_ALubytePtr(&data, &datalen, evCount);
|
|
for(j = 0;j < evCount;j++)
|
|
{
|
|
if(azCount[j] < MIN_AZ_COUNT || azCount[j] > MAX_AZ_COUNT)
|
|
{
|
|
ERR("Unsupported azimuth count: azCount[%d]=%d (%d to %d)\n",
|
|
j, azCount[j], MIN_AZ_COUNT, MAX_AZ_COUNT);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
if(failed)
|
|
return NULL;
|
|
|
|
evOffset = malloc(sizeof(evOffset[0])*evCount);
|
|
if(azCount == NULL || evOffset == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
evOffset[0] = 0;
|
|
irCount = azCount[0];
|
|
for(i = 1;i < evCount;i++)
|
|
{
|
|
evOffset[i] = evOffset[i-1] + azCount[i-1];
|
|
irCount += azCount[i];
|
|
}
|
|
|
|
coeffs = malloc(sizeof(coeffs[0])*irSize*irCount);
|
|
delays = malloc(sizeof(delays[0])*irCount);
|
|
if(coeffs == NULL || delays == NULL)
|
|
{
|
|
ERR("Out of memory.\n");
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
size_t reqsize = 2*irSize*irCount + irCount;
|
|
if(datalen < reqsize)
|
|
{
|
|
ERR("Unexpected end of %s data (req "SZFMT", rem "SZFMT"\n",
|
|
filename, reqsize, datalen);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
if(channelType == CHANTYPE_LEFTONLY)
|
|
{
|
|
if(sampleType == SAMPLETYPE_S16)
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
coeffs[i*irSize + j][0] = GetLE_ALshort(&data, &datalen) / 32768.0f;
|
|
}
|
|
else if(sampleType == SAMPLETYPE_S24)
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
coeffs[i*irSize + j][0] = GetLE_ALint24(&data, &datalen) / 8388608.0f;
|
|
}
|
|
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
delays[i][0] = GetLE_ALubyte(&data, &datalen);
|
|
if(delays[i][0] > MAX_HRIR_DELAY)
|
|
{
|
|
ERR("Invalid delays[%d][0]: %d (%d)\n", i, delays[i][0], MAX_HRIR_DELAY);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
else if(channelType == CHANTYPE_LEFTRIGHT)
|
|
{
|
|
if(sampleType == SAMPLETYPE_S16)
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
{
|
|
coeffs[i*irSize + j][0] = GetLE_ALshort(&data, &datalen) / 32768.0f;
|
|
coeffs[i*irSize + j][1] = GetLE_ALshort(&data, &datalen) / 32768.0f;
|
|
}
|
|
}
|
|
else if(sampleType == SAMPLETYPE_S24)
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
for(j = 0;j < irSize;j++)
|
|
{
|
|
coeffs[i*irSize + j][0] = GetLE_ALint24(&data, &datalen) / 8388608.0f;
|
|
coeffs[i*irSize + j][1] = GetLE_ALint24(&data, &datalen) / 8388608.0f;
|
|
}
|
|
}
|
|
|
|
for(i = 0;i < irCount;i++)
|
|
{
|
|
delays[i][0] = GetLE_ALubyte(&data, &datalen);
|
|
if(delays[i][0] > MAX_HRIR_DELAY)
|
|
{
|
|
ERR("Invalid delays[%d][0]: %d (%d)\n", i, delays[i][0], MAX_HRIR_DELAY);
|
|
failed = AL_TRUE;
|
|
}
|
|
delays[i][1] = GetLE_ALubyte(&data, &datalen);
|
|
if(delays[i][1] > MAX_HRIR_DELAY)
|
|
{
|
|
ERR("Invalid delays[%d][1]: %d (%d)\n", i, delays[i][1], MAX_HRIR_DELAY);
|
|
failed = AL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!failed)
|
|
{
|
|
if(channelType == CHANTYPE_LEFTONLY)
|
|
{
|
|
/* Mirror the left ear responses to the right ear. */
|
|
for(i = 0;i < evCount;i++)
|
|
{
|
|
ALushort evoffset = evOffset[i];
|
|
ALubyte azcount = azCount[i];
|
|
for(j = 0;j < azcount;j++)
|
|
{
|
|
ALsizei lidx = evoffset + j;
|
|
ALsizei ridx = evoffset + ((azcount-j) % azcount);
|
|
ALsizei k;
|
|
|
|
for(k = 0;k < irSize;k++)
|
|
coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
|
|
delays[ridx][1] = delays[lidx][0];
|
|
}
|
|
}
|
|
}
|
|
|
|
Hrtf = CreateHrtfStore(rate, irSize,
|
|
(ALfloat)distance / 1000.0f, evCount, irCount, azCount, evOffset,
|
|
coeffs, delays, filename
|
|
);
|
|
}
|
|
|
|
free(evOffset);
|
|
free(coeffs);
|
|
free(delays);
|
|
return Hrtf;
|
|
}
|
|
|
|
|
|
static void AddFileEntry(vector_EnumeratedHrtf *list, const_al_string filename)
|
|
{
|
|
EnumeratedHrtf entry = { AL_STRING_INIT_STATIC(), NULL };
|
|
struct HrtfEntry *loaded_entry;
|
|
const EnumeratedHrtf *iter;
|
|
const char *name;
|
|
const char *ext;
|
|
int i;
|
|
|
|
/* Check if this file has already been loaded globally. */
|
|
loaded_entry = LoadedHrtfs;
|
|
while(loaded_entry)
|
|
{
|
|
if(alstr_cmp_cstr(filename, loaded_entry->filename) == 0)
|
|
{
|
|
/* Check if this entry has already been added to the list. */
|
|
#define MATCH_ENTRY(i) (loaded_entry == (i)->hrtf)
|
|
VECTOR_FIND_IF(iter, const EnumeratedHrtf, *list, MATCH_ENTRY);
|
|
if(iter != VECTOR_END(*list))
|
|
{
|
|
TRACE("Skipping duplicate file entry %s\n", alstr_get_cstr(filename));
|
|
return;
|
|
}
|
|
#undef MATCH_FNAME
|
|
|
|
break;
|
|
}
|
|
loaded_entry = loaded_entry->next;
|
|
}
|
|
|
|
if(!loaded_entry)
|
|
{
|
|
TRACE("Got new file \"%s\"\n", alstr_get_cstr(filename));
|
|
|
|
loaded_entry = al_calloc(DEF_ALIGN,
|
|
FAM_SIZE(struct HrtfEntry, filename, alstr_length(filename)+1)
|
|
);
|
|
loaded_entry->next = LoadedHrtfs;
|
|
loaded_entry->handle = NULL;
|
|
strcpy(loaded_entry->filename, alstr_get_cstr(filename));
|
|
LoadedHrtfs = loaded_entry;
|
|
}
|
|
|
|
/* TODO: Get a human-readable name from the HRTF data (possibly coming in a
|
|
* format update). */
|
|
name = strrchr(alstr_get_cstr(filename), '/');
|
|
if(!name) name = strrchr(alstr_get_cstr(filename), '\\');
|
|
if(!name) name = alstr_get_cstr(filename);
|
|
else ++name;
|
|
|
|
ext = strrchr(name, '.');
|
|
|
|
i = 0;
|
|
do {
|
|
if(!ext)
|
|
alstr_copy_cstr(&entry.name, name);
|
|
else
|
|
alstr_copy_range(&entry.name, name, ext);
|
|
if(i != 0)
|
|
{
|
|
char str[64];
|
|
snprintf(str, sizeof(str), " #%d", i+1);
|
|
alstr_append_cstr(&entry.name, str);
|
|
}
|
|
++i;
|
|
|
|
#define MATCH_NAME(i) (alstr_cmp(entry.name, (i)->name) == 0)
|
|
VECTOR_FIND_IF(iter, const EnumeratedHrtf, *list, MATCH_NAME);
|
|
#undef MATCH_NAME
|
|
} while(iter != VECTOR_END(*list));
|
|
entry.hrtf = loaded_entry;
|
|
|
|
TRACE("Adding entry \"%s\" from file \"%s\"\n", alstr_get_cstr(entry.name),
|
|
alstr_get_cstr(filename));
|
|
VECTOR_PUSH_BACK(*list, entry);
|
|
}
|
|
|
|
/* Unfortunate that we have to duplicate AddFileEntry to take a memory buffer
|
|
* for input instead of opening the given filename.
|
|
*/
|
|
static void AddBuiltInEntry(vector_EnumeratedHrtf *list, const_al_string filename, ALuint residx)
|
|
{
|
|
EnumeratedHrtf entry = { AL_STRING_INIT_STATIC(), NULL };
|
|
struct HrtfEntry *loaded_entry;
|
|
struct Hrtf *hrtf = NULL;
|
|
const EnumeratedHrtf *iter;
|
|
const char *name;
|
|
const char *ext;
|
|
int i;
|
|
|
|
loaded_entry = LoadedHrtfs;
|
|
while(loaded_entry)
|
|
{
|
|
if(alstr_cmp_cstr(filename, loaded_entry->filename) == 0)
|
|
{
|
|
#define MATCH_ENTRY(i) (loaded_entry == (i)->hrtf)
|
|
VECTOR_FIND_IF(iter, const EnumeratedHrtf, *list, MATCH_ENTRY);
|
|
if(iter != VECTOR_END(*list))
|
|
{
|
|
TRACE("Skipping duplicate file entry %s\n", alstr_get_cstr(filename));
|
|
return;
|
|
}
|
|
#undef MATCH_FNAME
|
|
|
|
break;
|
|
}
|
|
loaded_entry = loaded_entry->next;
|
|
}
|
|
|
|
if(!loaded_entry)
|
|
{
|
|
size_t namelen = alstr_length(filename)+32;
|
|
|
|
TRACE("Got new file \"%s\"\n", alstr_get_cstr(filename));
|
|
|
|
loaded_entry = al_calloc(DEF_ALIGN,
|
|
FAM_SIZE(struct HrtfEntry, filename, namelen)
|
|
);
|
|
loaded_entry->next = LoadedHrtfs;
|
|
loaded_entry->handle = hrtf;
|
|
snprintf(loaded_entry->filename, namelen, "!%u_%s",
|
|
residx, alstr_get_cstr(filename));
|
|
LoadedHrtfs = loaded_entry;
|
|
}
|
|
|
|
/* TODO: Get a human-readable name from the HRTF data (possibly coming in a
|
|
* format update). */
|
|
name = strrchr(alstr_get_cstr(filename), '/');
|
|
if(!name) name = strrchr(alstr_get_cstr(filename), '\\');
|
|
if(!name) name = alstr_get_cstr(filename);
|
|
else ++name;
|
|
|
|
ext = strrchr(name, '.');
|
|
|
|
i = 0;
|
|
do {
|
|
if(!ext)
|
|
alstr_copy_cstr(&entry.name, name);
|
|
else
|
|
alstr_copy_range(&entry.name, name, ext);
|
|
if(i != 0)
|
|
{
|
|
char str[64];
|
|
snprintf(str, sizeof(str), " #%d", i+1);
|
|
alstr_append_cstr(&entry.name, str);
|
|
}
|
|
++i;
|
|
|
|
#define MATCH_NAME(i) (alstr_cmp(entry.name, (i)->name) == 0)
|
|
VECTOR_FIND_IF(iter, const EnumeratedHrtf, *list, MATCH_NAME);
|
|
#undef MATCH_NAME
|
|
} while(iter != VECTOR_END(*list));
|
|
entry.hrtf = loaded_entry;
|
|
|
|
TRACE("Adding built-in entry \"%s\"\n", alstr_get_cstr(entry.name));
|
|
VECTOR_PUSH_BACK(*list, entry);
|
|
}
|
|
|
|
|
|
#define IDR_DEFAULT_44100_MHR 1
|
|
#define IDR_DEFAULT_48000_MHR 2
|
|
|
|
#ifndef ALSOFT_EMBED_HRTF_DATA
|
|
|
|
static const ALubyte *GetResource(int UNUSED(name), size_t *size)
|
|
{
|
|
*size = 0;
|
|
return NULL;
|
|
}
|
|
|
|
#else
|
|
|
|
#include "default-44100.mhr.h"
|
|
#include "default-48000.mhr.h"
|
|
|
|
static const ALubyte *GetResource(int name, size_t *size)
|
|
{
|
|
if(name == IDR_DEFAULT_44100_MHR)
|
|
{
|
|
*size = sizeof(hrtf_default_44100);
|
|
return hrtf_default_44100;
|
|
}
|
|
if(name == IDR_DEFAULT_48000_MHR)
|
|
{
|
|
*size = sizeof(hrtf_default_48000);
|
|
return hrtf_default_48000;
|
|
}
|
|
*size = 0;
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
vector_EnumeratedHrtf EnumerateHrtf(const_al_string devname)
|
|
{
|
|
vector_EnumeratedHrtf list = VECTOR_INIT_STATIC();
|
|
const char *defaulthrtf = "";
|
|
const char *pathlist = "";
|
|
bool usedefaults = true;
|
|
|
|
if(ConfigValueStr(alstr_get_cstr(devname), NULL, "hrtf-paths", &pathlist))
|
|
{
|
|
al_string pname = AL_STRING_INIT_STATIC();
|
|
while(pathlist && *pathlist)
|
|
{
|
|
const char *next, *end;
|
|
|
|
while(isspace(*pathlist) || *pathlist == ',')
|
|
pathlist++;
|
|
if(*pathlist == '\0')
|
|
continue;
|
|
|
|
next = strchr(pathlist, ',');
|
|
if(next)
|
|
end = next++;
|
|
else
|
|
{
|
|
end = pathlist + strlen(pathlist);
|
|
usedefaults = false;
|
|
}
|
|
|
|
while(end != pathlist && isspace(*(end-1)))
|
|
--end;
|
|
if(end != pathlist)
|
|
{
|
|
vector_al_string flist;
|
|
size_t i;
|
|
|
|
alstr_copy_range(&pname, pathlist, end);
|
|
|
|
flist = SearchDataFiles(".mhr", alstr_get_cstr(pname));
|
|
for(i = 0;i < VECTOR_SIZE(flist);i++)
|
|
AddFileEntry(&list, VECTOR_ELEM(flist, i));
|
|
VECTOR_FOR_EACH(al_string, flist, alstr_reset);
|
|
VECTOR_DEINIT(flist);
|
|
}
|
|
|
|
pathlist = next;
|
|
}
|
|
|
|
alstr_reset(&pname);
|
|
}
|
|
else if(ConfigValueExists(alstr_get_cstr(devname), NULL, "hrtf_tables"))
|
|
ERR("The hrtf_tables option is deprecated, please use hrtf-paths instead.\n");
|
|
|
|
if(usedefaults)
|
|
{
|
|
al_string ename = AL_STRING_INIT_STATIC();
|
|
vector_al_string flist;
|
|
const ALubyte *rdata;
|
|
size_t rsize, i;
|
|
|
|
flist = SearchDataFiles(".mhr", "openal/hrtf");
|
|
for(i = 0;i < VECTOR_SIZE(flist);i++)
|
|
AddFileEntry(&list, VECTOR_ELEM(flist, i));
|
|
VECTOR_FOR_EACH(al_string, flist, alstr_reset);
|
|
VECTOR_DEINIT(flist);
|
|
|
|
rdata = GetResource(IDR_DEFAULT_44100_MHR, &rsize);
|
|
if(rdata != NULL && rsize > 0)
|
|
{
|
|
alstr_copy_cstr(&ename, "Built-In 44100hz");
|
|
AddBuiltInEntry(&list, ename, IDR_DEFAULT_44100_MHR);
|
|
}
|
|
|
|
rdata = GetResource(IDR_DEFAULT_48000_MHR, &rsize);
|
|
if(rdata != NULL && rsize > 0)
|
|
{
|
|
alstr_copy_cstr(&ename, "Built-In 48000hz");
|
|
AddBuiltInEntry(&list, ename, IDR_DEFAULT_48000_MHR);
|
|
}
|
|
alstr_reset(&ename);
|
|
}
|
|
|
|
if(VECTOR_SIZE(list) > 1 && ConfigValueStr(alstr_get_cstr(devname), NULL, "default-hrtf", &defaulthrtf))
|
|
{
|
|
const EnumeratedHrtf *iter;
|
|
/* Find the preferred HRTF and move it to the front of the list. */
|
|
#define FIND_ENTRY(i) (alstr_cmp_cstr((i)->name, defaulthrtf) == 0)
|
|
VECTOR_FIND_IF(iter, const EnumeratedHrtf, list, FIND_ENTRY);
|
|
#undef FIND_ENTRY
|
|
if(iter == VECTOR_END(list))
|
|
WARN("Failed to find default HRTF \"%s\"\n", defaulthrtf);
|
|
else if(iter != VECTOR_BEGIN(list))
|
|
{
|
|
EnumeratedHrtf entry = *iter;
|
|
memmove(&VECTOR_ELEM(list,1), &VECTOR_ELEM(list,0),
|
|
(iter-VECTOR_BEGIN(list))*sizeof(EnumeratedHrtf));
|
|
VECTOR_ELEM(list,0) = entry;
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
void FreeHrtfList(vector_EnumeratedHrtf *list)
|
|
{
|
|
#define CLEAR_ENTRY(i) alstr_reset(&(i)->name)
|
|
VECTOR_FOR_EACH(EnumeratedHrtf, *list, CLEAR_ENTRY);
|
|
VECTOR_DEINIT(*list);
|
|
#undef CLEAR_ENTRY
|
|
}
|
|
|
|
struct Hrtf *GetLoadedHrtf(struct HrtfEntry *entry)
|
|
{
|
|
struct Hrtf *hrtf = NULL;
|
|
struct FileMapping fmap;
|
|
const ALubyte *rdata;
|
|
const char *name;
|
|
ALuint residx;
|
|
size_t rsize;
|
|
char ch;
|
|
|
|
while(ATOMIC_FLAG_TEST_AND_SET(&LoadedHrtfLock, almemory_order_seq_cst))
|
|
althrd_yield();
|
|
|
|
if(entry->handle)
|
|
{
|
|
hrtf = entry->handle;
|
|
Hrtf_IncRef(hrtf);
|
|
goto done;
|
|
}
|
|
|
|
fmap.ptr = NULL;
|
|
fmap.len = 0;
|
|
if(sscanf(entry->filename, "!%u%c", &residx, &ch) == 2 && ch == '_')
|
|
{
|
|
name = strchr(entry->filename, ch)+1;
|
|
|
|
TRACE("Loading %s...\n", name);
|
|
rdata = GetResource(residx, &rsize);
|
|
if(rdata == NULL || rsize == 0)
|
|
{
|
|
ERR("Could not get resource %u, %s\n", residx, name);
|
|
goto done;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
name = entry->filename;
|
|
|
|
TRACE("Loading %s...\n", entry->filename);
|
|
fmap = MapFileToMem(entry->filename);
|
|
if(fmap.ptr == NULL)
|
|
{
|
|
ERR("Could not open %s\n", entry->filename);
|
|
goto done;
|
|
}
|
|
|
|
rdata = fmap.ptr;
|
|
rsize = fmap.len;
|
|
}
|
|
|
|
if(rsize < sizeof(magicMarker02))
|
|
ERR("%s data is too short ("SZFMT" bytes)\n", name, rsize);
|
|
else if(memcmp(rdata, magicMarker02, sizeof(magicMarker02)) == 0)
|
|
{
|
|
TRACE("Detected data set format v2\n");
|
|
hrtf = LoadHrtf02(rdata+sizeof(magicMarker02),
|
|
rsize-sizeof(magicMarker02), name
|
|
);
|
|
}
|
|
else if(memcmp(rdata, magicMarker01, sizeof(magicMarker01)) == 0)
|
|
{
|
|
TRACE("Detected data set format v1\n");
|
|
hrtf = LoadHrtf01(rdata+sizeof(magicMarker01),
|
|
rsize-sizeof(magicMarker01), name
|
|
);
|
|
}
|
|
else if(memcmp(rdata, magicMarker00, sizeof(magicMarker00)) == 0)
|
|
{
|
|
TRACE("Detected data set format v0\n");
|
|
hrtf = LoadHrtf00(rdata+sizeof(magicMarker00),
|
|
rsize-sizeof(magicMarker00), name
|
|
);
|
|
}
|
|
else
|
|
ERR("Invalid header in %s: \"%.8s\"\n", name, (const char*)rdata);
|
|
if(fmap.ptr)
|
|
UnmapFileMem(&fmap);
|
|
|
|
if(!hrtf)
|
|
{
|
|
ERR("Failed to load %s\n", name);
|
|
goto done;
|
|
}
|
|
entry->handle = hrtf;
|
|
Hrtf_IncRef(hrtf);
|
|
|
|
TRACE("Loaded HRTF support for format: %s %uhz\n",
|
|
DevFmtChannelsString(DevFmtStereo), hrtf->sampleRate);
|
|
|
|
done:
|
|
ATOMIC_FLAG_CLEAR(&LoadedHrtfLock, almemory_order_seq_cst);
|
|
return hrtf;
|
|
}
|
|
|
|
|
|
void Hrtf_IncRef(struct Hrtf *hrtf)
|
|
{
|
|
uint ref = IncrementRef(&hrtf->ref);
|
|
TRACEREF("%p increasing refcount to %u\n", hrtf, ref);
|
|
}
|
|
|
|
void Hrtf_DecRef(struct Hrtf *hrtf)
|
|
{
|
|
struct HrtfEntry *Hrtf;
|
|
uint ref = DecrementRef(&hrtf->ref);
|
|
TRACEREF("%p decreasing refcount to %u\n", hrtf, ref);
|
|
if(ref == 0)
|
|
{
|
|
while(ATOMIC_FLAG_TEST_AND_SET(&LoadedHrtfLock, almemory_order_seq_cst))
|
|
althrd_yield();
|
|
|
|
Hrtf = LoadedHrtfs;
|
|
while(Hrtf != NULL)
|
|
{
|
|
/* Need to double-check that it's still unused, as another device
|
|
* could've reacquired this HRTF after its reference went to 0 and
|
|
* before the lock was taken.
|
|
*/
|
|
if(hrtf == Hrtf->handle && ReadRef(&hrtf->ref) == 0)
|
|
{
|
|
al_free(Hrtf->handle);
|
|
Hrtf->handle = NULL;
|
|
TRACE("Unloaded unused HRTF %s\n", Hrtf->filename);
|
|
}
|
|
Hrtf = Hrtf->next;
|
|
}
|
|
|
|
ATOMIC_FLAG_CLEAR(&LoadedHrtfLock, almemory_order_seq_cst);
|
|
}
|
|
}
|
|
|
|
|
|
void FreeHrtfs(void)
|
|
{
|
|
struct HrtfEntry *Hrtf = LoadedHrtfs;
|
|
LoadedHrtfs = NULL;
|
|
|
|
while(Hrtf != NULL)
|
|
{
|
|
struct HrtfEntry *next = Hrtf->next;
|
|
al_free(Hrtf->handle);
|
|
al_free(Hrtf);
|
|
Hrtf = next;
|
|
}
|
|
}
|