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-rw-r--r--Alc/hrtf.cpp1400
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diff --git a/Alc/hrtf.cpp b/Alc/hrtf.cpp
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--- a/Alc/hrtf.cpp
+++ /dev/null
@@ -1,1400 +0,0 @@
-/**
- * OpenAL cross platform audio library
- * Copyright (C) 2011 by Chris Robinson
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- * Or go to http://www.gnu.org/copyleft/lgpl.html
- */
-
-#include "config.h"
-
-#include "hrtf.h"
-
-#include <algorithm>
-#include <array>
-#include <cassert>
-#include <cctype>
-#include <cstdint>
-#include <cstdio>
-#include <cstring>
-#include <functional>
-#include <fstream>
-#include <iterator>
-#include <memory>
-#include <mutex>
-#include <new>
-#include <numeric>
-#include <utility>
-
-#include "AL/al.h"
-
-#include "alcmain.h"
-#include "alconfig.h"
-#include "almalloc.h"
-#include "alnumeric.h"
-#include "aloptional.h"
-#include "alspan.h"
-#include "compat.h"
-#include "filters/splitter.h"
-#include "logging.h"
-#include "math_defs.h"
-#include "opthelpers.h"
-
-
-struct HrtfHandle {
- std::unique_ptr<HrtfEntry> entry;
- al::FlexArray<char> filename;
-
- HrtfHandle(size_t fname_len) : filename{fname_len} { }
- HrtfHandle(const HrtfHandle&) = delete;
- HrtfHandle& operator=(const HrtfHandle&) = delete;
-
- static std::unique_ptr<HrtfHandle> Create(size_t fname_len);
- static constexpr size_t Sizeof(size_t length) noexcept
- {
- return maxz(sizeof(HrtfHandle),
- al::FlexArray<char>::Sizeof(length, offsetof(HrtfHandle, filename)));
- }
-
- DEF_PLACE_NEWDEL()
-};
-
-std::unique_ptr<HrtfHandle> HrtfHandle::Create(size_t fname_len)
-{
- void *ptr{al_calloc(alignof(HrtfHandle), HrtfHandle::Sizeof(fname_len))};
- return std::unique_ptr<HrtfHandle>{new (ptr) HrtfHandle{fname_len}};
-}
-
-namespace {
-
-using namespace std::placeholders;
-
-using HrtfHandlePtr = std::unique_ptr<HrtfHandle>;
-
-/* Data set limits must be the same as or more flexible than those defined in
- * the makemhr utility.
- */
-#define MIN_IR_SIZE (8)
-#define MAX_IR_SIZE (512)
-#define MOD_IR_SIZE (2)
-
-#define MIN_FD_COUNT (1)
-#define MAX_FD_COUNT (16)
-
-#define MIN_FD_DISTANCE (0.05f)
-#define MAX_FD_DISTANCE (2.5f)
-
-#define MIN_EV_COUNT (5)
-#define MAX_EV_COUNT (128)
-
-#define MIN_AZ_COUNT (1)
-#define MAX_AZ_COUNT (128)
-
-#define MAX_HRIR_DELAY (HRTF_HISTORY_LENGTH-1)
-
-constexpr ALchar magicMarker00[8]{'M','i','n','P','H','R','0','0'};
-constexpr ALchar magicMarker01[8]{'M','i','n','P','H','R','0','1'};
-constexpr ALchar magicMarker02[8]{'M','i','n','P','H','R','0','2'};
-
-/* First value for pass-through coefficients (remaining are 0), used for omni-
- * directional sounds. */
-constexpr ALfloat PassthruCoeff{0.707106781187f/*sqrt(0.5)*/};
-
-std::mutex LoadedHrtfLock;
-al::vector<HrtfHandlePtr> LoadedHrtfs;
-
-
-class databuf final : public std::streambuf {
- int_type underflow() override
- { return traits_type::eof(); }
-
- pos_type seekoff(off_type offset, std::ios_base::seekdir whence, std::ios_base::openmode mode) override
- {
- if((mode&std::ios_base::out) || !(mode&std::ios_base::in))
- return traits_type::eof();
-
- char_type *cur;
- switch(whence)
- {
- case std::ios_base::beg:
- if(offset < 0 || offset > egptr()-eback())
- return traits_type::eof();
- cur = eback() + offset;
- break;
-
- case std::ios_base::cur:
- if((offset >= 0 && offset > egptr()-gptr()) ||
- (offset < 0 && -offset > gptr()-eback()))
- return traits_type::eof();
- cur = gptr() + offset;
- break;
-
- case std::ios_base::end:
- if(offset > 0 || -offset > egptr()-eback())
- return traits_type::eof();
- cur = egptr() + offset;
- break;
-
- default:
- return traits_type::eof();
- }
-
- setg(eback(), cur, egptr());
- return cur - eback();
- }
-
- pos_type seekpos(pos_type pos, std::ios_base::openmode mode) override
- {
- // Simplified version of seekoff
- if((mode&std::ios_base::out) || !(mode&std::ios_base::in))
- return traits_type::eof();
-
- if(pos < 0 || pos > egptr()-eback())
- return traits_type::eof();
-
- setg(eback(), eback() + static_cast<size_t>(pos), egptr());
- return pos;
- }
-
-public:
- databuf(const char_type *start, const char_type *end) noexcept
- {
- setg(const_cast<char_type*>(start), const_cast<char_type*>(start),
- const_cast<char_type*>(end));
- }
-};
-
-class idstream final : public std::istream {
- databuf mStreamBuf;
-
-public:
- idstream(const char *start, const char *end)
- : std::istream{nullptr}, mStreamBuf{start, end}
- { init(&mStreamBuf); }
-};
-
-
-struct IdxBlend { ALsizei idx; ALfloat blend; };
-/* Calculate the elevation index given the polar elevation in radians. This
- * will return an index between 0 and (evcount - 1).
- */
-IdxBlend CalcEvIndex(ALsizei evcount, ALfloat ev)
-{
- ev = (al::MathDefs<float>::Pi()*0.5f + ev) * (evcount-1) / al::MathDefs<float>::Pi();
- ALsizei idx{float2int(ev)};
-
- return IdxBlend{mini(idx, evcount-1), ev-idx};
-}
-
-/* Calculate the azimuth index given the polar azimuth in radians. This will
- * return an index between 0 and (azcount - 1).
- */
-IdxBlend CalcAzIndex(ALsizei azcount, ALfloat az)
-{
- az = (al::MathDefs<float>::Tau()+az) * azcount / al::MathDefs<float>::Tau();
- ALsizei idx{float2int(az)};
-
- return IdxBlend{idx%azcount, az-idx};
-}
-
-} // namespace
-
-
-/* Calculates static HRIR coefficients and delays for the given polar elevation
- * and azimuth in radians. The coefficients are normalized.
- */
-void GetHrtfCoeffs(const HrtfEntry *Hrtf, ALfloat elevation, ALfloat azimuth, ALfloat distance,
- ALfloat spread, HrirArray<ALfloat> &coeffs, ALsizei (&delays)[2])
-{
- const ALfloat dirfact{1.0f - (spread / al::MathDefs<float>::Tau())};
-
- const auto *field = Hrtf->field;
- const auto *field_end = field + Hrtf->fdCount-1;
- ALsizei ebase{0};
- while(distance < field->distance && field != field_end)
- {
- ebase += field->evCount;
- ++field;
- }
-
- /* Claculate the elevation indinces. */
- const auto elev0 = CalcEvIndex(field->evCount, elevation);
- const ALsizei elev1_idx{mini(elev0.idx+1, field->evCount-1)};
- const ALsizei ir0offset{Hrtf->elev[ebase + elev0.idx].irOffset};
- const ALsizei ir1offset{Hrtf->elev[ebase + elev1_idx].irOffset};
-
- /* Calculate azimuth indices. */
- const auto az0 = CalcAzIndex(Hrtf->elev[ebase + elev0.idx].azCount, azimuth);
- const auto az1 = CalcAzIndex(Hrtf->elev[ebase + elev1_idx].azCount, azimuth);
-
- /* Calculate the HRIR indices to blend. */
- ALsizei idx[4]{
- ir0offset + az0.idx,
- ir0offset + ((az0.idx+1) % Hrtf->elev[ebase + elev0.idx].azCount),
- ir1offset + az1.idx,
- ir1offset + ((az1.idx+1) % Hrtf->elev[ebase + elev1_idx].azCount)
- };
-
- /* Calculate bilinear blending weights, attenuated according to the
- * directional panning factor.
- */
- const ALfloat blend[4]{
- (1.0f-elev0.blend) * (1.0f-az0.blend) * dirfact,
- (1.0f-elev0.blend) * ( az0.blend) * dirfact,
- ( elev0.blend) * (1.0f-az1.blend) * dirfact,
- ( elev0.blend) * ( az1.blend) * dirfact
- };
-
- /* Calculate the blended HRIR delays. */
- delays[0] = fastf2i(
- Hrtf->delays[idx[0]][0]*blend[0] + Hrtf->delays[idx[1]][0]*blend[1] +
- Hrtf->delays[idx[2]][0]*blend[2] + Hrtf->delays[idx[3]][0]*blend[3]
- );
- delays[1] = fastf2i(
- Hrtf->delays[idx[0]][1]*blend[0] + Hrtf->delays[idx[1]][1]*blend[1] +
- Hrtf->delays[idx[2]][1]*blend[2] + Hrtf->delays[idx[3]][1]*blend[3]
- );
-
- const ALsizei irSize{Hrtf->irSize};
- ASSUME(irSize >= MIN_IR_SIZE);
-
- /* Calculate the sample offsets for the HRIR indices. */
- idx[0] *= irSize;
- idx[1] *= irSize;
- idx[2] *= irSize;
- idx[3] *= irSize;
-
- /* Calculate the blended HRIR coefficients. */
- ALfloat *coeffout{al::assume_aligned<16>(&coeffs[0][0])};
- coeffout[0] = PassthruCoeff * (1.0f-dirfact);
- coeffout[1] = PassthruCoeff * (1.0f-dirfact);
- std::fill(coeffout+2, coeffout + irSize*2, 0.0f);
- for(ALsizei c{0};c < 4;c++)
- {
- const ALfloat *srccoeffs{al::assume_aligned<16>(Hrtf->coeffs[idx[c]])};
- const ALfloat mult{blend[c]};
- auto blend_coeffs = [mult](const ALfloat src, const ALfloat coeff) noexcept -> ALfloat
- { return src*mult + coeff; };
- std::transform(srccoeffs, srccoeffs + irSize*2, coeffout, coeffout, blend_coeffs);
- }
-}
-
-
-std::unique_ptr<DirectHrtfState> DirectHrtfState::Create(size_t num_chans)
-{
- void *ptr{al_calloc(16, DirectHrtfState::Sizeof(num_chans))};
- return std::unique_ptr<DirectHrtfState>{new (ptr) DirectHrtfState{num_chans}};
-}
-
-void BuildBFormatHrtf(const HrtfEntry *Hrtf, DirectHrtfState *state, const ALuint NumChannels,
- const AngularPoint *AmbiPoints, const ALfloat (*RESTRICT AmbiMatrix)[MAX_AMBI_CHANNELS],
- const size_t AmbiCount, const ALfloat *RESTRICT AmbiOrderHFGain)
-{
- static constexpr int OrderFromChan[MAX_AMBI_CHANNELS]{
- 0, 1,1,1, 2,2,2,2,2, 3,3,3,3,3,3,3,
- };
- /* Set this to true for dual-band HRTF processing. May require better
- * calculation of the new IR length to deal with the head and tail
- * generated by the HF scaling.
- */
- static constexpr bool DualBand{true};
-
- ASSUME(NumChannels > 0);
- ASSUME(AmbiCount > 0);
-
- auto &field = Hrtf->field[0];
- ALsizei min_delay{HRTF_HISTORY_LENGTH};
- ALsizei max_delay{0};
- auto idx = al::vector<ALsizei>(AmbiCount);
- auto calc_idxs = [Hrtf,&field,&max_delay,&min_delay](const AngularPoint &pt) noexcept -> ALsizei
- {
- /* Calculate elevation index. */
- const auto evidx = clampi(
- static_cast<ALsizei>((90.0f+pt.Elev)*(field.evCount-1)/180.0f + 0.5f),
- 0, field.evCount-1);
-
- const ALsizei azcount{Hrtf->elev[evidx].azCount};
- const ALsizei iroffset{Hrtf->elev[evidx].irOffset};
-
- /* Calculate azimuth index for this elevation. */
- const auto azidx = static_cast<ALsizei>((360.0f+pt.Azim)*azcount/360.0f + 0.5f) % azcount;
-
- /* Calculate the index for the impulse response. */
- ALsizei idx{iroffset + azidx};
-
- min_delay = mini(min_delay, mini(Hrtf->delays[idx][0], Hrtf->delays[idx][1]));
- max_delay = maxi(max_delay, maxi(Hrtf->delays[idx][0], Hrtf->delays[idx][1]));
-
- return idx;
- };
- std::transform(AmbiPoints, AmbiPoints+AmbiCount, idx.begin(), calc_idxs);
-
- /* For dual-band processing, add a 16-sample delay to compensate for the HF
- * scale on the minimum-phase response.
- */
- static constexpr ALsizei base_delay{DualBand ? 16 : 0};
- const ALdouble xover_norm{400.0 / Hrtf->sampleRate};
- BandSplitterR<double> splitter{xover_norm};
-
- auto tmpres = al::vector<HrirArray<ALdouble>>(NumChannels);
- auto tmpfilt = al::vector<std::array<ALdouble,HRIR_LENGTH*4>>(3);
- for(size_t c{0u};c < AmbiCount;++c)
- {
- const ALfloat (*fir)[2]{&Hrtf->coeffs[idx[c] * Hrtf->irSize]};
- const ALsizei ldelay{Hrtf->delays[idx[c]][0] - min_delay + base_delay};
- const ALsizei rdelay{Hrtf->delays[idx[c]][1] - min_delay + base_delay};
-
- if(!DualBand)
- {
- /* For single-band decoding, apply the HF scale to the response. */
- for(ALuint i{0u};i < NumChannels;++i)
- {
- const ALdouble mult{ALdouble{AmbiOrderHFGain[OrderFromChan[i]]} *
- AmbiMatrix[c][i]};
- const ALsizei numirs{mini(Hrtf->irSize, HRIR_LENGTH-maxi(ldelay, rdelay))};
- ALsizei lidx{ldelay}, ridx{rdelay};
- for(ALsizei j{0};j < numirs;++j)
- {
- tmpres[i][lidx++][0] += fir[j][0] * mult;
- tmpres[i][ridx++][1] += fir[j][1] * mult;
- }
- }
- continue;
- }
-
- /* For dual-band processing, the HRIR needs to be split into low and
- * high frequency responses. The band-splitter alone creates frequency-
- * dependent phase-shifts, which is not ideal. To counteract it,
- * combine it with a backwards phase-shift.
- */
-
- /* Load the (left) HRIR backwards, into a temp buffer with padding. */
- std::fill(tmpfilt[2].begin(), tmpfilt[2].end(), 0.0);
- std::transform(fir, fir+Hrtf->irSize, tmpfilt[2].rbegin() + HRIR_LENGTH*3,
- [](const ALfloat (&ir)[2]) noexcept -> ALdouble { return ir[0]; });
-
- /* Apply the all-pass on the reversed signal and reverse the resulting
- * sample array. This produces the forward response with a backwards
- * phase-shift (+n degrees becomes -n degrees).
- */
- splitter.applyAllpass(tmpfilt[2].data(), static_cast<int>(tmpfilt[2].size()));
- std::reverse(tmpfilt[2].begin(), tmpfilt[2].end());
-
- /* Now apply the band-splitter. This applies the normal phase-shift,
- * which cancels out with the backwards phase-shift to get the original
- * phase on the split signal.
- */
- splitter.clear();
- splitter.process(tmpfilt[0].data(), tmpfilt[1].data(), tmpfilt[2].data(),
- static_cast<int>(tmpfilt[2].size()));
-
- /* Apply left ear response with delay and HF scale. */
- for(ALuint i{0u};i < NumChannels;++i)
- {
- const ALdouble mult{AmbiMatrix[c][i]};
- const ALdouble hfgain{AmbiOrderHFGain[OrderFromChan[i]]};
- ALsizei j{HRIR_LENGTH*3 - ldelay};
- for(ALsizei lidx{0};lidx < HRIR_LENGTH;++lidx,++j)
- tmpres[i][lidx][0] += (tmpfilt[0][j]*hfgain + tmpfilt[1][j]) * mult;
- }
-
- /* Now run the same process on the right HRIR. */
- std::fill(tmpfilt[2].begin(), tmpfilt[2].end(), 0.0);
- std::transform(fir, fir+Hrtf->irSize, tmpfilt[2].rbegin() + HRIR_LENGTH*3,
- [](const ALfloat (&ir)[2]) noexcept -> ALdouble { return ir[1]; });
-
- splitter.applyAllpass(tmpfilt[2].data(), static_cast<int>(tmpfilt[2].size()));
- std::reverse(tmpfilt[2].begin(), tmpfilt[2].end());
-
- splitter.clear();
- splitter.process(tmpfilt[0].data(), tmpfilt[1].data(), tmpfilt[2].data(),
- static_cast<int>(tmpfilt[2].size()));
-
- for(ALuint i{0u};i < NumChannels;++i)
- {
- const ALdouble mult{AmbiMatrix[c][i]};
- const ALdouble hfgain{AmbiOrderHFGain[OrderFromChan[i]]};
- ALsizei j{HRIR_LENGTH*3 - rdelay};
- for(ALsizei ridx{0};ridx < HRIR_LENGTH;++ridx,++j)
- tmpres[i][ridx][1] += (tmpfilt[0][j]*hfgain + tmpfilt[1][j]) * mult;
- }
- }
- tmpfilt.clear();
- idx.clear();
-
- for(ALuint i{0u};i < NumChannels;++i)
- {
- auto copy_arr = [](const std::array<double,2> &in) noexcept -> std::array<float,2>
- { return std::array<float,2>{{static_cast<float>(in[0]), static_cast<float>(in[1])}}; };
- std::transform(tmpres[i].begin(), tmpres[i].end(), state->Chan[i].Coeffs.begin(),
- copy_arr);
- }
- tmpres.clear();
-
- ALsizei max_length{HRIR_LENGTH};
- /* Increase the IR size by double the base delay with dual-band processing
- * to account for the head and tail from the HF response scale.
- */
- const ALsizei irsize{mini(Hrtf->irSize + base_delay*2, max_length)};
- max_length = mini(max_delay-min_delay + irsize, max_length);
-
- /* Round up to the next IR size multiple. */
- max_length += MOD_IR_SIZE-1;
- max_length -= max_length%MOD_IR_SIZE;
-
- TRACE("Skipped delay: %d, max delay: %d, new FIR length: %d\n",
- min_delay, max_delay-min_delay, max_length);
- state->IrSize = max_length;
-}
-
-
-namespace {
-
-std::unique_ptr<HrtfEntry> CreateHrtfStore(ALuint rate, ALsizei irSize, const ALsizei fdCount,
- const ALubyte *evCount, const ALfloat *distance, const ALushort *azCount,
- const ALushort *irOffset, ALsizei irCount, const ALfloat (*coeffs)[2],
- const ALubyte (*delays)[2], const char *filename)
-{
- std::unique_ptr<HrtfEntry> Hrtf;
-
- ALsizei evTotal{std::accumulate(evCount, evCount+fdCount, 0)};
- size_t total{sizeof(HrtfEntry)};
- total = RoundUp(total, alignof(HrtfEntry::Field)); /* Align for field infos */
- total += sizeof(HrtfEntry::Field)*fdCount;
- total = RoundUp(total, alignof(HrtfEntry::Elevation)); /* Align for elevation infos */
- total += sizeof(Hrtf->elev[0])*evTotal;
- total = RoundUp(total, 16); /* Align for coefficients using SIMD */
- total += sizeof(Hrtf->coeffs[0])*irSize*irCount;
- total += sizeof(Hrtf->delays[0])*irCount;
-
- Hrtf.reset(new (al_calloc(16, total)) HrtfEntry{});
- if(!Hrtf)
- ERR("Out of memory allocating storage for %s.\n", filename);
- else
- {
- InitRef(&Hrtf->ref, 1u);
- Hrtf->sampleRate = rate;
- Hrtf->irSize = irSize;
- Hrtf->fdCount = fdCount;
-
- /* Set up pointers to storage following the main HRTF struct. */
- char *base = reinterpret_cast<char*>(Hrtf.get());
- uintptr_t offset = sizeof(HrtfEntry);
-
- offset = RoundUp(offset, alignof(HrtfEntry::Field)); /* Align for field infos */
- auto field_ = reinterpret_cast<HrtfEntry::Field*>(base + offset);
- offset += sizeof(field_[0])*fdCount;
-
- offset = RoundUp(offset, alignof(HrtfEntry::Elevation)); /* Align for elevation infos */
- auto elev_ = reinterpret_cast<HrtfEntry::Elevation*>(base + offset);
- offset += sizeof(elev_[0])*evTotal;
-
- offset = RoundUp(offset, 16); /* Align for coefficients using SIMD */
- auto coeffs_ = reinterpret_cast<ALfloat(*)[2]>(base + offset);
- offset += sizeof(coeffs_[0])*irSize*irCount;
-
- auto delays_ = reinterpret_cast<ALubyte(*)[2]>(base + offset);
- offset += sizeof(delays_[0])*irCount;
-
- assert(offset == total);
-
- /* Copy input data to storage. */
- for(ALsizei i{0};i < fdCount;i++)
- {
- field_[i].distance = distance[i];
- field_[i].evCount = evCount[i];
- }
- for(ALsizei i{0};i < evTotal;i++)
- {
- elev_[i].azCount = azCount[i];
- elev_[i].irOffset = irOffset[i];
- }
- for(ALsizei i{0};i < irSize*irCount;i++)
- {
- coeffs_[i][0] = coeffs[i][0];
- coeffs_[i][1] = coeffs[i][1];
- }
- for(ALsizei i{0};i < irCount;i++)
- {
- delays_[i][0] = delays[i][0];
- delays_[i][1] = delays[i][1];
- }
-
- /* Finally, assign the storage pointers. */
- Hrtf->field = field_;
- Hrtf->elev = elev_;
- Hrtf->coeffs = coeffs_;
- Hrtf->delays = delays_;
- }
-
- return Hrtf;
-}
-
-ALubyte GetLE_ALubyte(std::istream &data)
-{
- return static_cast<ALubyte>(data.get());
-}
-
-ALshort GetLE_ALshort(std::istream &data)
-{
- int ret = data.get();
- ret |= data.get() << 8;
- return static_cast<ALshort>((ret^32768) - 32768);
-}
-
-ALushort GetLE_ALushort(std::istream &data)
-{
- int ret = data.get();
- ret |= data.get() << 8;
- return static_cast<ALushort>(ret);
-}
-
-ALint GetLE_ALint24(std::istream &data)
-{
- int ret = data.get();
- ret |= data.get() << 8;
- ret |= data.get() << 16;
- return (ret^8388608) - 8388608;
-}
-
-ALuint GetLE_ALuint(std::istream &data)
-{
- int ret = data.get();
- ret |= data.get() << 8;
- ret |= data.get() << 16;
- ret |= data.get() << 24;
- return ret;
-}
-
-std::unique_ptr<HrtfEntry> LoadHrtf00(std::istream &data, const char *filename)
-{
- ALuint rate{GetLE_ALuint(data)};
- ALushort irCount{GetLE_ALushort(data)};
- ALushort irSize{GetLE_ALushort(data)};
- ALubyte evCount{GetLE_ALubyte(data)};
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- ALboolean failed{AL_FALSE};
- 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 nullptr;
-
- al::vector<ALushort> evOffset(evCount);
- for(auto &val : evOffset)
- val = GetLE_ALushort(data);
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
- for(ALsizei i{1};i < evCount;i++)
- {
- if(evOffset[i] <= evOffset[i-1])
- {
- ERR("Invalid evOffset: evOffset[%d]=%d (last=%d)\n",
- i, evOffset[i], evOffset[i-1]);
- failed = AL_TRUE;
- }
- }
- if(irCount <= evOffset.back())
- {
- ERR("Invalid evOffset: evOffset[%zu]=%d (irCount=%d)\n",
- evOffset.size()-1, evOffset.back(), irCount);
- failed = AL_TRUE;
- }
- if(failed)
- return nullptr;
-
- al::vector<ALushort> azCount(evCount);
- for(ALsizei i{1};i < evCount;i++)
- {
- 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;
- }
- }
- azCount.back() = irCount - evOffset.back();
- if(azCount.back() < MIN_AZ_COUNT || azCount.back() > MAX_AZ_COUNT)
- {
- ERR("Unsupported azimuth count: azCount[%zu]=%d (%d to %d)\n",
- azCount.size()-1, azCount.back(), MIN_AZ_COUNT, MAX_AZ_COUNT);
- failed = AL_TRUE;
- }
- if(failed)
- return nullptr;
-
- al::vector<std::array<ALfloat,2>> coeffs(irSize*irCount);
- al::vector<std::array<ALubyte,2>> delays(irCount);
- for(auto &val : coeffs)
- val[0] = GetLE_ALshort(data) / 32768.0f;
- for(auto &val : delays)
- val[0] = GetLE_ALubyte(data);
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
- for(ALsizei i{0};i < irCount;i++)
- {
- 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)
- return nullptr;
-
- /* Mirror the left ear responses to the right ear. */
- for(ALsizei i{0};i < evCount;i++)
- {
- const ALushort evoffset{evOffset[i]};
- const ALushort azcount{azCount[i]};
- for(ALsizei j{0};j < azcount;j++)
- {
- const ALsizei lidx{evoffset + j};
- const ALsizei ridx{evoffset + ((azcount-j) % azcount)};
-
- for(ALsizei k{0};k < irSize;k++)
- coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
- delays[ridx][1] = delays[lidx][0];
- }
- }
-
- static constexpr ALfloat distance{0.0f};
- return CreateHrtfStore(rate, irSize, 1, &evCount, &distance, azCount.data(), evOffset.data(),
- irCount, &reinterpret_cast<ALfloat(&)[2]>(coeffs[0]),
- &reinterpret_cast<ALubyte(&)[2]>(delays[0]), filename);
-}
-
-std::unique_ptr<HrtfEntry> LoadHrtf01(std::istream &data, const char *filename)
-{
- ALuint rate{GetLE_ALuint(data)};
- ALushort irSize{GetLE_ALubyte(data)};
- ALubyte evCount{GetLE_ALubyte(data)};
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- ALboolean failed{AL_FALSE};
- 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 nullptr;
-
- al::vector<ALushort> azCount(evCount);
- std::generate(azCount.begin(), azCount.end(), std::bind(GetLE_ALubyte, std::ref(data)));
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
- for(ALsizei 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)
- return nullptr;
-
- al::vector<ALushort> evOffset(evCount);
- evOffset[0] = 0;
- ALushort irCount{azCount[0]};
- for(ALsizei i{1};i < evCount;i++)
- {
- evOffset[i] = evOffset[i-1] + azCount[i-1];
- irCount += azCount[i];
- }
-
- al::vector<std::array<ALfloat,2>> coeffs(irSize*irCount);
- al::vector<std::array<ALubyte,2>> delays(irCount);
- for(auto &val : coeffs)
- val[0] = GetLE_ALshort(data) / 32768.0f;
- for(auto &val : delays)
- val[0] = GetLE_ALubyte(data);
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
- for(ALsizei i{0};i < irCount;i++)
- {
- 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)
- return nullptr;
-
- /* Mirror the left ear responses to the right ear. */
- for(ALsizei i{0};i < evCount;i++)
- {
- const ALushort evoffset{evOffset[i]};
- const ALushort azcount{azCount[i]};
- for(ALsizei j{0};j < azcount;j++)
- {
- const ALsizei lidx{evoffset + j};
- const ALsizei ridx{evoffset + ((azcount-j) % azcount)};
-
- for(ALsizei k{0};k < irSize;k++)
- coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
- delays[ridx][1] = delays[lidx][0];
- }
- }
-
- static constexpr ALfloat distance{0.0f};
- return CreateHrtfStore(rate, irSize, 1, &evCount, &distance, azCount.data(), evOffset.data(),
- irCount, &reinterpret_cast<ALfloat(&)[2]>(coeffs[0]),
- &reinterpret_cast<ALubyte(&)[2]>(delays[0]), filename);
-}
-
-#define SAMPLETYPE_S16 0
-#define SAMPLETYPE_S24 1
-
-#define CHANTYPE_LEFTONLY 0
-#define CHANTYPE_LEFTRIGHT 1
-
-std::unique_ptr<HrtfEntry> LoadHrtf02(std::istream &data, const char *filename)
-{
- ALuint rate{GetLE_ALuint(data)};
- ALubyte sampleType{GetLE_ALubyte(data)};
- ALubyte channelType{GetLE_ALubyte(data)};
- ALushort irSize{GetLE_ALubyte(data)};
- ALubyte fdCount{GetLE_ALubyte(data)};
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- ALboolean failed{AL_FALSE};
- 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 || fdCount > MAX_FD_COUNT)
- {
- ERR("Multiple field-depths not supported: fdCount=%d (%d to %d)\n",
- fdCount, MIN_FD_COUNT, MAX_FD_COUNT);
- failed = AL_TRUE;
- }
- if(failed)
- return nullptr;
-
- al::vector<ALfloat> distance(fdCount);
- al::vector<ALubyte> evCount(fdCount);
- al::vector<ALushort> azCount;
- for(ALsizei f{0};f < fdCount;f++)
- {
- distance[f] = GetLE_ALushort(data) / 1000.0f;
- evCount[f] = GetLE_ALubyte(data);
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- if(distance[f] < MIN_FD_DISTANCE || distance[f] > MAX_FD_DISTANCE)
- {
- ERR("Unsupported field distance[%d]=%f (%f to %f meters)\n", f,
- distance[f], MIN_FD_DISTANCE, MAX_FD_DISTANCE);
- failed = AL_TRUE;
- }
- if(f > 0 && distance[f] <= distance[f-1])
- {
- ERR("Field distance[%d] is not after previous (%f > %f)\n", f, distance[f],
- distance[f-1]);
- failed = AL_TRUE;
- }
- if(evCount[f] < MIN_EV_COUNT || evCount[f] > MAX_EV_COUNT)
- {
- ERR("Unsupported elevation count: evCount[%d]=%d (%d to %d)\n", f,
- evCount[f], MIN_EV_COUNT, MAX_EV_COUNT);
- failed = AL_TRUE;
- }
- if(failed)
- return nullptr;
-
- size_t ebase{azCount.size()};
- azCount.resize(ebase + evCount[f]);
- std::generate(azCount.begin()+ebase, azCount.end(),
- std::bind(GetLE_ALubyte, std::ref(data)));
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- for(ALsizei e{0};e < evCount[f];e++)
- {
- if(azCount[ebase+e] < MIN_AZ_COUNT || azCount[ebase+e] > MAX_AZ_COUNT)
- {
- ERR("Unsupported azimuth count: azCount[%d][%d]=%d (%d to %d)\n", f, e,
- azCount[ebase+e], MIN_AZ_COUNT, MAX_AZ_COUNT);
- failed = AL_TRUE;
- }
- }
- if(failed)
- return nullptr;
- }
-
- al::vector<ALushort> evOffset(azCount.size());
- evOffset[0] = 0;
- std::partial_sum(azCount.cbegin(), azCount.cend()-1, evOffset.begin()+1);
- const ALsizei irTotal{evOffset.back() + azCount.back()};
-
- al::vector<std::array<ALfloat,2>> coeffs(irSize*irTotal);
- al::vector<std::array<ALubyte,2>> delays(irTotal);
- if(channelType == CHANTYPE_LEFTONLY)
- {
- if(sampleType == SAMPLETYPE_S16)
- {
- for(auto &val : coeffs)
- val[0] = GetLE_ALshort(data) / 32768.0f;
- }
- else if(sampleType == SAMPLETYPE_S24)
- {
- for(auto &val : coeffs)
- val[0] = GetLE_ALint24(data) / 8388608.0f;
- }
- for(auto &val : delays)
- val[0] = GetLE_ALubyte(data);
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
- for(ALsizei i{0};i < irTotal;++i)
- {
- 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(auto &val : coeffs)
- {
- val[0] = GetLE_ALshort(data) / 32768.0f;
- val[1] = GetLE_ALshort(data) / 32768.0f;
- }
- }
- else if(sampleType == SAMPLETYPE_S24)
- {
- for(auto &val : coeffs)
- {
- val[0] = GetLE_ALint24(data) / 8388608.0f;
- val[1] = GetLE_ALint24(data) / 8388608.0f;
- }
- }
- for(auto &val : delays)
- {
- val[0] = GetLE_ALubyte(data);
- val[1] = GetLE_ALubyte(data);
- }
- if(!data || data.eof())
- {
- ERR("Failed reading %s\n", filename);
- return nullptr;
- }
-
- for(ALsizei i{0};i < irTotal;++i)
- {
- 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;
- }
- 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)
- return nullptr;
-
- if(channelType == CHANTYPE_LEFTONLY)
- {
- /* Mirror the left ear responses to the right ear. */
- ALsizei ebase{0};
- for(ALsizei f{0};f < fdCount;f++)
- {
- for(ALsizei e{0};e < evCount[f];e++)
- {
- const ALushort evoffset{evOffset[ebase+e]};
- const ALushort azcount{azCount[ebase+e]};
- for(ALsizei a{0};a < azcount;a++)
- {
- const ALsizei lidx{evoffset + a};
- const ALsizei ridx{evoffset + ((azcount-a) % azcount)};
-
- for(ALsizei k{0};k < irSize;k++)
- coeffs[ridx*irSize + k][1] = coeffs[lidx*irSize + k][0];
- delays[ridx][1] = delays[lidx][0];
- }
- }
- ebase += evCount[f];
- }
- }
-
- if(fdCount > 1)
- {
- auto distance_ = al::vector<ALfloat>(distance.size());
- auto evCount_ = al::vector<ALubyte>(evCount.size());
- auto azCount_ = al::vector<ALushort>(azCount.size());
- auto evOffset_ = al::vector<ALushort>(evOffset.size());
- auto coeffs_ = al::vector<float2>(coeffs.size());
- auto delays_ = al::vector<std::array<ALubyte,2>>(delays.size());
-
- /* Simple reverse for the per-field elements. */
- std::reverse_copy(distance.cbegin(), distance.cend(), distance_.begin());
- std::reverse_copy(evCount.cbegin(), evCount.cend(), evCount_.begin());
-
- /* Each field has a group of elevations, which each have an azimuth
- * count. Reverse the order of the groups, keeping the relative order
- * of per-group azimuth counts.
- */
- auto azcnt_end = azCount_.end();
- auto copy_azs = [&azCount,&azcnt_end](const size_t ebase, const ALubyte num_evs) -> size_t
- {
- auto azcnt_src = azCount.begin()+ebase;
- azcnt_end = std::copy_backward(azcnt_src, azcnt_src+num_evs, azcnt_end);
- return ebase + num_evs;
- };
- std::accumulate(evCount.cbegin(), evCount.cend(), size_t{0u}, copy_azs);
- assert(azCount_.begin() == azcnt_end);
-
- /* Reestablish the IR offset for each elevation index, given the new
- * ordering of elevations.
- */
- evOffset_[0] = 0;
- std::partial_sum(azCount_.cbegin(), azCount_.cend()-1, evOffset_.begin()+1);
-
- /* Reverse the order of each field's group of IRs. */
- auto coeffs_end = coeffs_.end();
- auto delays_end = delays_.end();
- auto copy_irs = [irSize,&azCount,&coeffs,&delays,&coeffs_end,&delays_end](const size_t ebase, const ALubyte num_evs) -> size_t
- {
- const ALsizei abase{std::accumulate(azCount.cbegin(), azCount.cbegin()+ebase, 0)};
- const ALsizei num_azs{std::accumulate(azCount.cbegin()+ebase,
- azCount.cbegin() + (ebase+num_evs), 0)};
-
- coeffs_end = std::copy_backward(coeffs.cbegin() + abase*irSize,
- coeffs.cbegin() + (abase+num_azs)*irSize, coeffs_end);
- delays_end = std::copy_backward(delays.cbegin() + abase,
- delays.cbegin() + (abase+num_azs), delays_end);
-
- return ebase + num_evs;
- };
- std::accumulate(evCount.cbegin(), evCount.cend(), size_t{0u}, copy_irs);
- assert(coeffs_.begin() == coeffs_end);
- assert(delays_.begin() == delays_end);
-
- distance = std::move(distance_);
- evCount = std::move(evCount_);
- azCount = std::move(azCount_);
- evOffset = std::move(evOffset_);
- coeffs = std::move(coeffs_);
- delays = std::move(delays_);
- }
-
- return CreateHrtfStore(rate, irSize, fdCount, evCount.data(), distance.data(), azCount.data(),
- evOffset.data(), irTotal, &reinterpret_cast<ALfloat(&)[2]>(coeffs[0]),
- &reinterpret_cast<ALubyte(&)[2]>(delays[0]), filename);
-}
-
-
-bool checkName(al::vector<EnumeratedHrtf> &list, const std::string &name)
-{
- return std::find_if(list.cbegin(), list.cend(),
- [&name](const EnumeratedHrtf &entry)
- { return name == entry.name; }
- ) != list.cend();
-}
-
-void AddFileEntry(al::vector<EnumeratedHrtf> &list, const std::string &filename)
-{
- /* Check if this file has already been loaded globally. */
- auto loaded_entry = LoadedHrtfs.begin();
- for(;loaded_entry != LoadedHrtfs.end();++loaded_entry)
- {
- if(filename != (*loaded_entry)->filename.data())
- continue;
-
- /* Check if this entry has already been added to the list. */
- auto iter = std::find_if(list.cbegin(), list.cend(),
- [loaded_entry](const EnumeratedHrtf &entry) -> bool
- { return loaded_entry->get() == entry.hrtf; }
- );
- if(iter != list.cend())
- {
- TRACE("Skipping duplicate file entry %s\n", filename.c_str());
- return;
- }
-
- break;
- }
-
- if(loaded_entry == LoadedHrtfs.end())
- {
- TRACE("Got new file \"%s\"\n", filename.c_str());
-
- LoadedHrtfs.emplace_back(HrtfHandle::Create(filename.length()+1));
- loaded_entry = LoadedHrtfs.end()-1;
- std::copy(filename.begin(), filename.end(), (*loaded_entry)->filename.begin());
- (*loaded_entry)->filename.back() = '\0';
- }
-
- /* TODO: Get a human-readable name from the HRTF data (possibly coming in a
- * format update). */
- size_t namepos = filename.find_last_of('/')+1;
- if(!namepos) namepos = filename.find_last_of('\\')+1;
-
- size_t extpos{filename.find_last_of('.')};
- if(extpos <= namepos) extpos = std::string::npos;
-
- const std::string basename{(extpos == std::string::npos) ?
- filename.substr(namepos) : filename.substr(namepos, extpos-namepos)};
- std::string newname{basename};
- int count{1};
- while(checkName(list, newname))
- {
- newname = basename;
- newname += " #";
- newname += std::to_string(++count);
- }
- list.emplace_back(EnumeratedHrtf{newname, loaded_entry->get()});
- const EnumeratedHrtf &entry = list.back();
-
- TRACE("Adding file entry \"%s\"\n", entry.name.c_str());
-}
-
-/* Unfortunate that we have to duplicate AddFileEntry to take a memory buffer
- * for input instead of opening the given filename.
- */
-void AddBuiltInEntry(al::vector<EnumeratedHrtf> &list, const std::string &filename, ALuint residx)
-{
- auto loaded_entry = LoadedHrtfs.begin();
- for(;loaded_entry != LoadedHrtfs.end();++loaded_entry)
- {
- if(filename != (*loaded_entry)->filename.data())
- continue;
-
- /* Check if this entry has already been added to the list. */
- auto iter = std::find_if(list.cbegin(), list.cend(),
- [loaded_entry](const EnumeratedHrtf &entry) -> bool
- { return loaded_entry->get() == entry.hrtf; }
- );
- if(iter != list.cend())
- {
- TRACE("Skipping duplicate file entry %s\n", filename.c_str());
- return;
- }
-
- break;
- }
-
- if(loaded_entry == LoadedHrtfs.end())
- {
- TRACE("Got new file \"%s\"\n", filename.c_str());
-
- LoadedHrtfs.emplace_back(HrtfHandle::Create(filename.length()+32));
- loaded_entry = LoadedHrtfs.end()-1;
- snprintf((*loaded_entry)->filename.data(), (*loaded_entry)->filename.size(), "!%u_%s",
- residx, filename.c_str());
- }
-
- /* TODO: Get a human-readable name from the HRTF data (possibly coming in a
- * format update). */
-
- std::string newname{filename};
- int count{1};
- while(checkName(list, newname))
- {
- newname = filename;
- newname += " #";
- newname += std::to_string(++count);
- }
- list.emplace_back(EnumeratedHrtf{newname, loaded_entry->get()});
- const EnumeratedHrtf &entry = list.back();
-
- TRACE("Adding built-in entry \"%s\"\n", entry.name.c_str());
-}
-
-
-#define IDR_DEFAULT_44100_MHR 1
-#define IDR_DEFAULT_48000_MHR 2
-
-using ResData = al::span<const char>;
-#ifndef ALSOFT_EMBED_HRTF_DATA
-
-ResData GetResource(int /*name*/)
-{ return ResData{}; }
-
-#else
-
-#include "default-44100.mhr.h"
-#include "default-48000.mhr.h"
-
-ResData GetResource(int name)
-{
- if(name == IDR_DEFAULT_44100_MHR)
- return {reinterpret_cast<const char*>(hrtf_default_44100), sizeof(hrtf_default_44100)};
- if(name == IDR_DEFAULT_48000_MHR)
- return {reinterpret_cast<const char*>(hrtf_default_48000), sizeof(hrtf_default_48000)};
- return ResData{};
-}
-#endif
-
-} // namespace
-
-
-al::vector<EnumeratedHrtf> EnumerateHrtf(const char *devname)
-{
- al::vector<EnumeratedHrtf> list;
-
- bool usedefaults{true};
- if(auto pathopt = ConfigValueStr(devname, nullptr, "hrtf-paths"))
- {
- const char *pathlist{pathopt->c_str()};
- 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)
- {
- const std::string pname{pathlist, end};
- for(const auto &fname : SearchDataFiles(".mhr", pname.c_str()))
- AddFileEntry(list, fname);
- }
-
- pathlist = next;
- }
- }
- else if(ConfigValueExists(devname, nullptr, "hrtf_tables"))
- ERR("The hrtf_tables option is deprecated, please use hrtf-paths instead.\n");
-
- if(usedefaults)
- {
- for(const auto &fname : SearchDataFiles(".mhr", "openal/hrtf"))
- AddFileEntry(list, fname);
-
- if(!GetResource(IDR_DEFAULT_44100_MHR).empty())
- AddBuiltInEntry(list, "Built-In 44100hz", IDR_DEFAULT_44100_MHR);
-
- if(!GetResource(IDR_DEFAULT_48000_MHR).empty())
- AddBuiltInEntry(list, "Built-In 48000hz", IDR_DEFAULT_48000_MHR);
- }
-
- if(!list.empty())
- {
- if(auto defhrtfopt = ConfigValueStr(devname, nullptr, "default-hrtf"))
- {
- auto iter = std::find_if(list.begin(), list.end(),
- [&defhrtfopt](const EnumeratedHrtf &entry) -> bool
- { return entry.name == *defhrtfopt; }
- );
- if(iter == list.end())
- WARN("Failed to find default HRTF \"%s\"\n", defhrtfopt->c_str());
- else if(iter != list.begin())
- {
- EnumeratedHrtf entry{std::move(*iter)};
- list.erase(iter);
- list.insert(list.begin(), std::move(entry));
- }
- }
- }
-
- return list;
-}
-
-HrtfEntry *GetLoadedHrtf(HrtfHandle *handle)
-{
- std::lock_guard<std::mutex> _{LoadedHrtfLock};
-
- if(handle->entry)
- {
- HrtfEntry *hrtf{handle->entry.get()};
- hrtf->IncRef();
- return hrtf;
- }
-
- std::unique_ptr<std::istream> stream;
- const char *name{""};
- ALuint residx{};
- char ch{};
- if(sscanf(handle->filename.data(), "!%u%c", &residx, &ch) == 2 && ch == '_')
- {
- name = strchr(handle->filename.data(), ch)+1;
-
- TRACE("Loading %s...\n", name);
- ResData res{GetResource(residx)};
- if(res.empty())
- {
- ERR("Could not get resource %u, %s\n", residx, name);
- return nullptr;
- }
- stream = al::make_unique<idstream>(res.begin(), res.end());
- }
- else
- {
- name = handle->filename.data();
-
- TRACE("Loading %s...\n", handle->filename.data());
- auto fstr = al::make_unique<al::ifstream>(handle->filename.data(), std::ios::binary);
- if(!fstr->is_open())
- {
- ERR("Could not open %s\n", handle->filename.data());
- return nullptr;
- }
- stream = std::move(fstr);
- }
-
- std::unique_ptr<HrtfEntry> hrtf;
- char magic[sizeof(magicMarker02)];
- stream->read(magic, sizeof(magic));
- if(stream->gcount() < static_cast<std::streamsize>(sizeof(magicMarker02)))
- ERR("%s data is too short (%zu bytes)\n", name, stream->gcount());
- else if(memcmp(magic, magicMarker02, sizeof(magicMarker02)) == 0)
- {
- TRACE("Detected data set format v2\n");
- hrtf = LoadHrtf02(*stream, name);
- }
- else if(memcmp(magic, magicMarker01, sizeof(magicMarker01)) == 0)
- {
- TRACE("Detected data set format v1\n");
- hrtf = LoadHrtf01(*stream, name);
- }
- else if(memcmp(magic, magicMarker00, sizeof(magicMarker00)) == 0)
- {
- TRACE("Detected data set format v0\n");
- hrtf = LoadHrtf00(*stream, name);
- }
- else
- ERR("Invalid header in %s: \"%.8s\"\n", name, magic);
- stream.reset();
-
- if(!hrtf)
- {
- ERR("Failed to load %s\n", name);
- return nullptr;
- }
-
- TRACE("Loaded HRTF support for format: %s %uhz\n",
- DevFmtChannelsString(DevFmtStereo), hrtf->sampleRate);
- handle->entry = std::move(hrtf);
-
- return handle->entry.get();
-}
-
-
-void HrtfEntry::IncRef()
-{
- auto ref = IncrementRef(&this->ref);
- TRACEREF("HrtfEntry %p increasing refcount to %u\n", this, ref);
-}
-
-void HrtfEntry::DecRef()
-{
- auto ref = DecrementRef(&this->ref);
- TRACEREF("HrtfEntry %p decreasing refcount to %u\n", this, ref);
- if(ref == 0)
- {
- std::lock_guard<std::mutex> _{LoadedHrtfLock};
-
- /* Go through and clear all unused HRTFs. */
- auto delete_unused = [](HrtfHandlePtr &handle) -> void
- {
- HrtfEntry *entry{handle->entry.get()};
- if(entry && ReadRef(&entry->ref) == 0)
- {
- TRACE("Unloading unused HRTF %s\n", handle->filename.data());
- handle->entry = nullptr;
- }
- };
- std::for_each(LoadedHrtfs.begin(), LoadedHrtfs.end(), delete_unused);
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-07 06:08:55 +0000