29fba79cd5
It messes with 5.1 sources using direct channels, and the surround channels are supposed to map to the side labels. Individual backends can deal with the channel order/label differences, as they already do to a degree.
1106 lines
44 KiB
C++
1106 lines
44 KiB
C++
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2010 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <algorithm>
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#include <array>
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#include <chrono>
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#include <cmath>
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#include <cstdio>
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#include <cstring>
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#include <functional>
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#include <iterator>
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#include <memory>
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#include <new>
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#include <numeric>
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#include <string>
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "AL/alext.h"
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#include "al/auxeffectslot.h"
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#include "albit.h"
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#include "alconfig.h"
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#include "alc/context.h"
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#include "almalloc.h"
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#include "alnumeric.h"
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#include "aloptional.h"
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#include "alspan.h"
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#include "alstring.h"
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#include "alu.h"
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#include "core/ambdec.h"
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#include "core/ambidefs.h"
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#include "core/bformatdec.h"
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#include "core/bs2b.h"
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#include "core/devformat.h"
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#include "core/front_stablizer.h"
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#include "core/hrtf.h"
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#include "core/logging.h"
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#include "core/uhjfilter.h"
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#include "device.h"
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#include "math_defs.h"
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#include "opthelpers.h"
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namespace {
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using namespace std::placeholders;
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using std::chrono::seconds;
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using std::chrono::nanoseconds;
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inline const char *GetLabelFromChannel(Channel channel)
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{
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switch(channel)
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{
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case FrontLeft: return "front-left";
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case FrontRight: return "front-right";
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case FrontCenter: return "front-center";
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case LFE: return "lfe";
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case BackLeft: return "back-left";
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case BackRight: return "back-right";
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case BackCenter: return "back-center";
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case SideLeft: return "side-left";
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case SideRight: return "side-right";
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case TopFrontLeft: return "top-front-left";
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case TopFrontCenter: return "top-front-center";
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case TopFrontRight: return "top-front-right";
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case TopCenter: return "top-center";
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case TopBackLeft: return "top-back-left";
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case TopBackCenter: return "top-back-center";
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case TopBackRight: return "top-back-right";
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case MaxChannels: break;
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}
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return "(unknown)";
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}
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std::unique_ptr<FrontStablizer> CreateStablizer(const size_t outchans, const uint srate)
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{
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auto stablizer = FrontStablizer::Create(outchans);
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for(auto &buf : stablizer->DelayBuf)
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std::fill(buf.begin(), buf.end(), 0.0f);
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/* Initialize band-splitting filter for the mid signal, with a crossover at
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* 5khz (could be higher).
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*/
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stablizer->MidFilter.init(5000.0f / static_cast<float>(srate));
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return stablizer;
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}
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void AllocChannels(ALCdevice *device, const size_t main_chans, const size_t real_chans)
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{
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TRACE("Channel config, Main: %zu, Real: %zu\n", main_chans, real_chans);
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/* Allocate extra channels for any post-filter output. */
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const size_t num_chans{main_chans + real_chans};
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TRACE("Allocating %zu channels, %zu bytes\n", num_chans,
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num_chans*sizeof(device->MixBuffer[0]));
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device->MixBuffer.resize(num_chans);
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al::span<FloatBufferLine> buffer{device->MixBuffer};
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device->Dry.Buffer = buffer.first(main_chans);
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buffer = buffer.subspan(main_chans);
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if(real_chans != 0)
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{
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device->RealOut.Buffer = buffer.first(real_chans);
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buffer = buffer.subspan(real_chans);
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}
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else
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device->RealOut.Buffer = device->Dry.Buffer;
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}
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using ChannelCoeffs = std::array<float,MaxAmbiChannels>;
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enum DecoderMode : bool {
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SingleBand = false,
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DualBand = true
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};
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template<DecoderMode Mode, size_t N>
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struct DecoderConfig;
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template<size_t N>
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struct DecoderConfig<SingleBand, N> {
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uint8_t mOrder{};
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bool mIs3D{};
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std::array<Channel,N> mChannels{};
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DevAmbiScaling mScaling{};
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std::array<float,MaxAmbiOrder+1> mOrderGain{};
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std::array<ChannelCoeffs,N> mCoeffs{};
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};
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template<size_t N>
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struct DecoderConfig<DualBand, N> {
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uint8_t mOrder{};
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bool mIs3D{};
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std::array<Channel,N> mChannels{};
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DevAmbiScaling mScaling{};
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std::array<float,MaxAmbiOrder+1> mOrderGain{};
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std::array<ChannelCoeffs,N> mCoeffs{};
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std::array<float,MaxAmbiOrder+1> mOrderGainLF{};
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std::array<ChannelCoeffs,N> mCoeffsLF{};
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};
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template<>
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struct DecoderConfig<DualBand, 0> {
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uint8_t mOrder{};
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bool mIs3D{};
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al::span<const Channel> mChannels;
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DevAmbiScaling mScaling{};
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al::span<const float> mOrderGain;
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al::span<const ChannelCoeffs> mCoeffs;
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al::span<const float> mOrderGainLF;
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al::span<const ChannelCoeffs> mCoeffsLF;
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template<size_t N>
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DecoderConfig& operator=(const DecoderConfig<SingleBand,N> &rhs) noexcept
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{
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mOrder = rhs.mOrder;
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mIs3D = rhs.mIs3D;
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mChannels = rhs.mChannels;
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mScaling = rhs.mScaling;
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mOrderGain = rhs.mOrderGain;
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mCoeffs = rhs.mCoeffs;
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mOrderGainLF = {};
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mCoeffsLF = {};
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return *this;
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}
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template<size_t N>
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DecoderConfig& operator=(const DecoderConfig<DualBand,N> &rhs) noexcept
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{
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mOrder = rhs.mOrder;
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mIs3D = rhs.mIs3D;
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mChannels = rhs.mChannels;
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mScaling = rhs.mScaling;
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mOrderGain = rhs.mOrderGain;
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mCoeffs = rhs.mCoeffs;
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mOrderGainLF = rhs.mOrderGainLF;
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mCoeffsLF = rhs.mCoeffsLF;
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return *this;
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}
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};
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using DecoderView = DecoderConfig<DualBand, 0>;
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void InitNearFieldCtrl(ALCdevice *device, float ctrl_dist, uint order, bool is3d)
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{
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static const uint chans_per_order2d[MaxAmbiOrder+1]{ 1, 2, 2, 2 };
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static const uint chans_per_order3d[MaxAmbiOrder+1]{ 1, 3, 5, 7 };
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/* NFC is only used when AvgSpeakerDist is greater than 0. */
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if(!device->getConfigValueBool("decoder", "nfc", 0) || !(ctrl_dist > 0.0f))
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return;
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device->AvgSpeakerDist = clampf(ctrl_dist, 0.1f, 10.0f);
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TRACE("Using near-field reference distance: %.2f meters\n", device->AvgSpeakerDist);
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auto iter = std::copy_n(is3d ? chans_per_order3d : chans_per_order2d, order+1u,
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std::begin(device->NumChannelsPerOrder));
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std::fill(iter, std::end(device->NumChannelsPerOrder), 0u);
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}
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void InitDistanceComp(ALCdevice *device, DecoderView decoder,
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const al::span<const float,MAX_OUTPUT_CHANNELS> dists)
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{
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const float maxdist{std::accumulate(std::begin(dists), std::end(dists), 0.0f, maxf)};
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if(!device->getConfigValueBool("decoder", "distance-comp", 1) || !(maxdist > 0.0f))
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return;
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const auto distSampleScale = static_cast<float>(device->Frequency) / SpeedOfSoundMetersPerSec;
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std::vector<DistanceComp::ChanData> ChanDelay;
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ChanDelay.reserve(device->RealOut.Buffer.size());
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size_t total{0u};
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for(size_t chidx{0};chidx < decoder.mChannels.size();++chidx)
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{
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const Channel ch{decoder.mChannels[chidx]};
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const uint idx{device->RealOut.ChannelIndex[ch]};
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if(idx == INVALID_CHANNEL_INDEX)
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continue;
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const float distance{dists[chidx]};
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/* Distance compensation only delays in steps of the sample rate. This
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* is a bit less accurate since the delay time falls to the nearest
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* sample time, but it's far simpler as it doesn't have to deal with
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* phase offsets. This means at 48khz, for instance, the distance delay
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* will be in steps of about 7 millimeters.
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*/
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float delay{std::floor((maxdist - distance)*distSampleScale + 0.5f)};
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if(delay > float{MAX_DELAY_LENGTH-1})
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{
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ERR("Delay for channel %u (%s) exceeds buffer length (%f > %d)\n", idx,
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GetLabelFromChannel(ch), delay, MAX_DELAY_LENGTH-1);
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delay = float{MAX_DELAY_LENGTH-1};
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}
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ChanDelay.resize(maxz(ChanDelay.size(), idx+1));
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ChanDelay[idx].Length = static_cast<uint>(delay);
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ChanDelay[idx].Gain = distance / maxdist;
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TRACE("Channel %s distance comp: %u samples, %f gain\n", GetLabelFromChannel(ch),
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ChanDelay[idx].Length, ChanDelay[idx].Gain);
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/* Round up to the next 4th sample, so each channel buffer starts
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* 16-byte aligned.
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*/
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total += RoundUp(ChanDelay[idx].Length, 4);
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}
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if(total > 0)
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{
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auto chandelays = DistanceComp::Create(total);
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ChanDelay[0].Buffer = chandelays->mSamples.data();
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auto set_bufptr = [](const DistanceComp::ChanData &last, const DistanceComp::ChanData &cur)
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-> DistanceComp::ChanData
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{
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DistanceComp::ChanData ret{cur};
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ret.Buffer = last.Buffer + RoundUp(last.Length, 4);
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return ret;
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};
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std::partial_sum(ChanDelay.begin(), ChanDelay.end(), chandelays->mChannels.begin(),
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set_bufptr);
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device->ChannelDelays = std::move(chandelays);
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}
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}
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inline auto& GetAmbiScales(DevAmbiScaling scaletype) noexcept
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{
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if(scaletype == DevAmbiScaling::FuMa) return AmbiScale::FromFuMa();
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if(scaletype == DevAmbiScaling::SN3D) return AmbiScale::FromSN3D();
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return AmbiScale::FromN3D();
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}
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inline auto& GetAmbiLayout(DevAmbiLayout layouttype) noexcept
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{
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if(layouttype == DevAmbiLayout::FuMa) return AmbiIndex::FromFuMa();
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return AmbiIndex::FromACN();
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}
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DecoderView MakeDecoderView(ALCdevice *device, const AmbDecConf *conf,
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DecoderConfig<DualBand, MAX_OUTPUT_CHANNELS> &decoder)
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{
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DecoderView ret{};
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decoder.mOrder = (conf->ChanMask > Ambi2OrderMask) ? uint8_t{3} :
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(conf->ChanMask > Ambi1OrderMask) ? uint8_t{2} : uint8_t{1};
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decoder.mIs3D = (conf->ChanMask&AmbiPeriphonicMask) != 0;
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switch(conf->CoeffScale)
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{
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case AmbDecScale::N3D: decoder.mScaling = DevAmbiScaling::N3D; break;
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case AmbDecScale::SN3D: decoder.mScaling = DevAmbiScaling::SN3D; break;
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case AmbDecScale::FuMa: decoder.mScaling = DevAmbiScaling::FuMa; break;
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}
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std::copy_n(std::begin(conf->HFOrderGain),
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std::min(al::size(conf->HFOrderGain), al::size(decoder.mOrderGain)),
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std::begin(decoder.mOrderGain));
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std::copy_n(std::begin(conf->LFOrderGain),
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std::min(al::size(conf->LFOrderGain), al::size(decoder.mOrderGainLF)),
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std::begin(decoder.mOrderGainLF));
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std::array<uint8_t,MaxAmbiChannels> idx_map{};
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if(decoder.mIs3D)
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{
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uint flags{conf->ChanMask};
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auto elem = idx_map.begin();
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while(flags)
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{
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int acn{al::countr_zero(flags)};
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flags &= ~(1u<<acn);
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*elem = static_cast<uint8_t>(acn);
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++elem;
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}
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}
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else
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{
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uint flags{conf->ChanMask};
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auto elem = idx_map.begin();
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while(flags)
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{
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int acn{al::countr_zero(flags)};
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flags &= ~(1u<<acn);
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switch(acn)
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{
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case 0: *elem = 0; break;
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case 1: *elem = 1; break;
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case 3: *elem = 2; break;
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case 4: *elem = 3; break;
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case 8: *elem = 4; break;
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case 9: *elem = 5; break;
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case 15: *elem = 6; break;
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default: return ret;
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}
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++elem;
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}
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}
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const auto num_coeffs = static_cast<uint>(al::popcount(conf->ChanMask));
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const auto hfmatrix = conf->HFMatrix;
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const auto lfmatrix = conf->LFMatrix;
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uint chan_count{0};
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using const_speaker_span = al::span<const AmbDecConf::SpeakerConf>;
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for(auto &speaker : const_speaker_span{conf->Speakers.get(), conf->NumSpeakers})
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{
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/* NOTE: AmbDec does not define any standard speaker names, however
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* for this to work we have to by able to find the output channel
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* the speaker definition corresponds to. Therefore, OpenAL Soft
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* requires these channel labels to be recognized:
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*
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* LF = Front left
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* RF = Front right
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* LS = Side left
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* RS = Side right
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* LB = Back left
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* RB = Back right
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* CE = Front center
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* CB = Back center
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*
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* Additionally, surround51 will acknowledge back speakers for side
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* channels, and surround51rear will acknowledge side speakers for
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* back channels, to avoid issues with an ambdec expecting 5.1 to
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* use the side channels when the device is configured for back,
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* and vice-versa.
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*/
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Channel ch{};
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if(speaker.Name == "LF")
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ch = FrontLeft;
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else if(speaker.Name == "RF")
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ch = FrontRight;
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else if(speaker.Name == "CE")
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ch = FrontCenter;
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else if(speaker.Name == "LS")
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ch = SideLeft;
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else if(speaker.Name == "RS")
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ch = SideRight;
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else if(speaker.Name == "LB")
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ch = (device->FmtChans == DevFmtX51) ? SideLeft : BackLeft;
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else if(speaker.Name == "RB")
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ch = (device->FmtChans == DevFmtX51) ? SideRight : BackRight;
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else if(speaker.Name == "CB")
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ch = BackCenter;
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else
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{
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ERR("AmbDec speaker label \"%s\" not recognized\n", speaker.Name.c_str());
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continue;
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}
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decoder.mChannels[chan_count] = ch;
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for(size_t src{0};src < num_coeffs;++src)
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{
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const size_t dst{idx_map[src]};
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decoder.mCoeffs[chan_count][dst] = hfmatrix[chan_count][src];
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}
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if(conf->FreqBands > 1)
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{
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for(size_t src{0};src < num_coeffs;++src)
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{
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const size_t dst{idx_map[src]};
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decoder.mCoeffsLF[chan_count][dst] = lfmatrix[chan_count][src];
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}
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}
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++chan_count;
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}
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if(chan_count > 0)
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{
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ret.mOrder = decoder.mOrder;
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ret.mIs3D = decoder.mIs3D;
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ret.mChannels = {decoder.mChannels.data(), chan_count};
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ret.mOrderGain = decoder.mOrderGain;
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ret.mCoeffs = {decoder.mCoeffs.data(), chan_count};
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if(conf->FreqBands > 1)
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{
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ret.mOrderGainLF = decoder.mOrderGainLF;
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ret.mCoeffsLF = {decoder.mCoeffsLF.data(), chan_count};
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}
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}
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return ret;
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}
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|
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constexpr DecoderConfig<SingleBand, 1> MonoConfig{
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0, false, {{FrontCenter}},
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DevAmbiScaling::N3D,
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{{1.0f}},
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{{ {{1.0f}} }}
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};
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constexpr DecoderConfig<SingleBand, 2> StereoConfig{
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1, false, {{FrontLeft, FrontRight}},
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DevAmbiScaling::N3D,
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{{1.0f, 1.0f}},
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{{
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{{5.00000000e-1f, 2.88675135e-1f, 5.52305643e-2f}},
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{{5.00000000e-1f, -2.88675135e-1f, 5.52305643e-2f}},
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}}
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};
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constexpr DecoderConfig<DualBand, 4> QuadConfig{
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2, false, {{BackLeft, FrontLeft, FrontRight, BackRight}},
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DevAmbiScaling::N3D,
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/*HF*/{{1.15470054e+0f, 1.00000000e+0f, 5.77350269e-1f}},
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{{
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{{2.50000000e-1f, 2.04124145e-1f, -2.04124145e-1f, -1.29099445e-1f, 0.00000000e+0f}},
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{{2.50000000e-1f, 2.04124145e-1f, 2.04124145e-1f, 1.29099445e-1f, 0.00000000e+0f}},
|
|
{{2.50000000e-1f, -2.04124145e-1f, 2.04124145e-1f, -1.29099445e-1f, 0.00000000e+0f}},
|
|
{{2.50000000e-1f, -2.04124145e-1f, -2.04124145e-1f, 1.29099445e-1f, 0.00000000e+0f}},
|
|
}},
|
|
/*LF*/{{1.00000000e+0f, 1.00000000e+0f, 1.00000000e+0f}},
|
|
{{
|
|
{{2.50000000e-1f, 2.04124145e-1f, -2.04124145e-1f, -1.29099445e-1f, 0.00000000e+0f}},
|
|
{{2.50000000e-1f, 2.04124145e-1f, 2.04124145e-1f, 1.29099445e-1f, 0.00000000e+0f}},
|
|
{{2.50000000e-1f, -2.04124145e-1f, 2.04124145e-1f, -1.29099445e-1f, 0.00000000e+0f}},
|
|
{{2.50000000e-1f, -2.04124145e-1f, -2.04124145e-1f, 1.29099445e-1f, 0.00000000e+0f}},
|
|
}}
|
|
};
|
|
constexpr DecoderConfig<DualBand, 5> X51Config{
|
|
2, false, {{SideLeft, FrontLeft, FrontCenter, FrontRight, SideRight}},
|
|
DevAmbiScaling::FuMa,
|
|
/*HF*/{{1.00000000e+0f, 1.00000000e+0f, 1.00000000e+0f}},
|
|
{{
|
|
{{5.67316000e-1f, 4.22920000e-1f, -3.15495000e-1f, -6.34490000e-2f, -2.92380000e-2f}},
|
|
{{3.68584000e-1f, 2.72349000e-1f, 3.21616000e-1f, 1.92645000e-1f, 4.82600000e-2f}},
|
|
{{1.83579000e-1f, 0.00000000e+0f, 1.99588000e-1f, 0.00000000e+0f, 9.62820000e-2f}},
|
|
{{3.68584000e-1f, -2.72349000e-1f, 3.21616000e-1f, -1.92645000e-1f, 4.82600000e-2f}},
|
|
{{5.67316000e-1f, -4.22920000e-1f, -3.15495000e-1f, 6.34490000e-2f, -2.92380000e-2f}},
|
|
}},
|
|
/*LF*/{{1.00000000e+0f, 1.00000000e+0f, 1.00000000e+0f}},
|
|
{{
|
|
{{4.90109850e-1f, 3.77305010e-1f, -3.73106990e-1f, -1.25914530e-1f, 1.45133000e-2f}},
|
|
{{1.49085730e-1f, 3.03561680e-1f, 1.53290060e-1f, 2.45112480e-1f, -1.50753130e-1f}},
|
|
{{1.37654920e-1f, 0.00000000e+0f, 4.49417940e-1f, 0.00000000e+0f, 2.57844070e-1f}},
|
|
{{1.49085730e-1f, -3.03561680e-1f, 1.53290060e-1f, -2.45112480e-1f, -1.50753130e-1f}},
|
|
{{4.90109850e-1f, -3.77305010e-1f, -3.73106990e-1f, 1.25914530e-1f, 1.45133000e-2f}},
|
|
}}
|
|
};
|
|
constexpr DecoderConfig<SingleBand, 5> X61Config{
|
|
2, false, {{SideLeft, FrontLeft, FrontRight, SideRight, BackCenter}},
|
|
DevAmbiScaling::N3D,
|
|
{{1.0f, 1.0f, 1.0f}},
|
|
{{
|
|
{{2.04460341e-1f, 2.17177926e-1f, -4.39996780e-2f, -2.60790269e-2f, -6.87239792e-2f}},
|
|
{{1.58923161e-1f, 9.21772680e-2f, 1.59658796e-1f, 6.66278083e-2f, 3.84686854e-2f}},
|
|
{{1.58923161e-1f, -9.21772680e-2f, 1.59658796e-1f, -6.66278083e-2f, 3.84686854e-2f}},
|
|
{{2.04460341e-1f, -2.17177926e-1f, -4.39996780e-2f, 2.60790269e-2f, -6.87239792e-2f}},
|
|
{{2.50001688e-1f, 0.00000000e+0f, -2.50000094e-1f, 0.00000000e+0f, 6.05133395e-2f}},
|
|
}}
|
|
};
|
|
constexpr DecoderConfig<DualBand, 6> X71Config{
|
|
3, false, {{BackLeft, SideLeft, FrontLeft, FrontRight, SideRight, BackRight}},
|
|
DevAmbiScaling::N3D,
|
|
/*HF*/{{1.22474487e+0f, 1.13151672e+0f, 8.66025404e-1f, 4.68689571e-1f}},
|
|
{{
|
|
{{1.66666667e-1f, 9.62250449e-2f, -1.66666667e-1f, -1.49071198e-1f, 8.60662966e-2f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, 1.92450090e-1f, 0.00000000e+0f, 0.00000000e+0f, -1.72132593e-1f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, 9.62250449e-2f, 1.66666667e-1f, 1.49071198e-1f, 8.60662966e-2f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -9.62250449e-2f, 1.66666667e-1f, -1.49071198e-1f, 8.60662966e-2f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -1.92450090e-1f, 0.00000000e+0f, 0.00000000e+0f, -1.72132593e-1f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -9.62250449e-2f, -1.66666667e-1f, 1.49071198e-1f, 8.60662966e-2f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
}},
|
|
/*LF*/{{1.00000000e+0f, 1.00000000e+0f, 1.00000000e+0f, 1.00000000e+0f}},
|
|
{{
|
|
{{1.66666667e-1f, 9.62250449e-2f, -1.66666667e-1f, -1.49071198e-1f, 8.60662966e-2f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, 1.92450090e-1f, 0.00000000e+0f, 0.00000000e+0f, -1.72132593e-1f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, 9.62250449e-2f, 1.66666667e-1f, 1.49071198e-1f, 8.60662966e-2f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -9.62250449e-2f, 1.66666667e-1f, -1.49071198e-1f, 8.60662966e-2f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -1.92450090e-1f, 0.00000000e+0f, 0.00000000e+0f, -1.72132593e-1f, 7.96819073e-2f, 0.00000000e+0f}},
|
|
{{1.66666667e-1f, -9.62250449e-2f, -1.66666667e-1f, 1.49071198e-1f, 8.60662966e-2f, -7.96819073e-2f, 0.00000000e+0f}},
|
|
}}
|
|
};
|
|
|
|
void InitPanning(ALCdevice *device, const bool hqdec=false, const bool stablize=false,
|
|
DecoderView decoder={})
|
|
{
|
|
if(!decoder.mOrder)
|
|
{
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtMono: decoder = MonoConfig; break;
|
|
case DevFmtStereo: decoder = StereoConfig; break;
|
|
case DevFmtQuad: decoder = QuadConfig; break;
|
|
case DevFmtX51: decoder = X51Config; break;
|
|
case DevFmtX61: decoder = X61Config; break;
|
|
case DevFmtX71: decoder = X71Config; break;
|
|
case DevFmtAmbi3D:
|
|
auto&& acnmap = GetAmbiLayout(device->mAmbiLayout);
|
|
auto&& n3dscale = GetAmbiScales(device->mAmbiScale);
|
|
|
|
/* For DevFmtAmbi3D, the ambisonic order is already set. */
|
|
const size_t count{AmbiChannelsFromOrder(device->mAmbiOrder)};
|
|
std::transform(acnmap.begin(), acnmap.begin()+count, std::begin(device->Dry.AmbiMap),
|
|
[&n3dscale](const uint8_t &acn) noexcept -> BFChannelConfig
|
|
{ return BFChannelConfig{1.0f/n3dscale[acn], acn}; });
|
|
AllocChannels(device, count, 0);
|
|
|
|
float nfc_delay{device->configValue<float>("decoder", "nfc-ref-delay").value_or(0.0f)};
|
|
if(nfc_delay > 0.0f)
|
|
InitNearFieldCtrl(device, nfc_delay * SpeedOfSoundMetersPerSec, device->mAmbiOrder,
|
|
true);
|
|
return;
|
|
}
|
|
}
|
|
|
|
const bool dual_band{hqdec && !decoder.mCoeffsLF.empty()};
|
|
al::vector<ChannelDec> chancoeffs, chancoeffslf;
|
|
for(size_t i{0u};i < decoder.mChannels.size();++i)
|
|
{
|
|
const uint idx{GetChannelIdxByName(device->RealOut, decoder.mChannels[i])};
|
|
if(idx == INVALID_CHANNEL_INDEX)
|
|
{
|
|
ERR("Failed to find %s channel in device\n",
|
|
GetLabelFromChannel(decoder.mChannels[i]));
|
|
continue;
|
|
}
|
|
|
|
chancoeffs.resize(maxz(chancoeffs.size(), idx+1u), ChannelDec{});
|
|
al::span<float,MaxAmbiChannels> coeffs{chancoeffs[idx]};
|
|
size_t ambichan{0};
|
|
for(uint o{0};o < decoder.mOrder+1u;++o)
|
|
{
|
|
const float order_gain{decoder.mOrderGain[o]};
|
|
const size_t order_max{decoder.mIs3D ? AmbiChannelsFromOrder(o) :
|
|
Ambi2DChannelsFromOrder(o)};
|
|
for(;ambichan < order_max;++ambichan)
|
|
coeffs[ambichan] = decoder.mCoeffs[i][ambichan] * order_gain;
|
|
}
|
|
if(!dual_band)
|
|
continue;
|
|
|
|
chancoeffslf.resize(maxz(chancoeffslf.size(), idx+1u), ChannelDec{});
|
|
coeffs = chancoeffslf[idx];
|
|
ambichan = 0;
|
|
for(uint o{0};o < decoder.mOrder+1u;++o)
|
|
{
|
|
const float order_gain{decoder.mOrderGainLF[o]};
|
|
const size_t order_max{decoder.mIs3D ? AmbiChannelsFromOrder(o) :
|
|
Ambi2DChannelsFromOrder(o)};
|
|
for(;ambichan < order_max;++ambichan)
|
|
coeffs[ambichan] = decoder.mCoeffsLF[i][ambichan] * order_gain;
|
|
}
|
|
}
|
|
|
|
/* For non-DevFmtAmbi3D, set the ambisonic order and reset the layout and
|
|
* scale.
|
|
*/
|
|
device->mAmbiOrder = decoder.mOrder;
|
|
device->mAmbiLayout = DevAmbiLayout::ACN;
|
|
device->mAmbiScale = DevAmbiScaling::N3D;
|
|
|
|
const size_t ambicount{decoder.mIs3D ? AmbiChannelsFromOrder(decoder.mOrder) :
|
|
Ambi2DChannelsFromOrder(decoder.mOrder)};
|
|
const al::span<const uint8_t> acnmap{decoder.mIs3D ? AmbiIndex::FromACN().data() :
|
|
AmbiIndex::FromACN2D().data(), ambicount};
|
|
auto&& coeffscale = GetAmbiScales(decoder.mScaling);
|
|
std::transform(acnmap.begin(), acnmap.end(), std::begin(device->Dry.AmbiMap),
|
|
[&coeffscale](const uint8_t &acn) noexcept
|
|
{ return BFChannelConfig{1.0f/coeffscale[acn], acn}; });
|
|
AllocChannels(device, ambicount, device->channelsFromFmt());
|
|
|
|
std::unique_ptr<FrontStablizer> stablizer;
|
|
if(stablize)
|
|
{
|
|
/* Only enable the stablizer if the decoder does not output to the
|
|
* front-center channel.
|
|
*/
|
|
const auto cidx = device->RealOut.ChannelIndex[FrontCenter];
|
|
bool hasfc{false};
|
|
if(cidx < chancoeffs.size())
|
|
{
|
|
for(const auto &coeff : chancoeffs[cidx])
|
|
hasfc |= coeff != 0.0f;
|
|
}
|
|
if(!hasfc && cidx < chancoeffslf.size())
|
|
{
|
|
for(const auto &coeff : chancoeffslf[cidx])
|
|
hasfc |= coeff != 0.0f;
|
|
}
|
|
if(!hasfc)
|
|
{
|
|
stablizer = CreateStablizer(device->channelsFromFmt(), device->Frequency);
|
|
TRACE("Front stablizer enabled\n");
|
|
}
|
|
}
|
|
|
|
TRACE("Enabling %s-band %s-order%s ambisonic decoder\n",
|
|
!dual_band ? "single" : "dual",
|
|
(decoder.mOrder > 2) ? "third" :
|
|
(decoder.mOrder > 1) ? "second" : "first",
|
|
decoder.mIs3D ? " periphonic" : "");
|
|
device->AmbiDecoder = BFormatDec::Create(ambicount, chancoeffs, chancoeffslf,
|
|
device->mXOverFreq/static_cast<float>(device->Frequency), std::move(stablizer));
|
|
}
|
|
|
|
void InitHrtfPanning(ALCdevice *device)
|
|
{
|
|
constexpr float Deg180{al::MathDefs<float>::Pi()};
|
|
constexpr float Deg_90{Deg180 / 2.0f /* 90 degrees*/};
|
|
constexpr float Deg_45{Deg_90 / 2.0f /* 45 degrees*/};
|
|
constexpr float Deg135{Deg_45 * 3.0f /*135 degrees*/};
|
|
constexpr float Deg_35{6.154797086e-01f /* 35~ 36 degrees*/};
|
|
constexpr float Deg_69{1.205932499e+00f /* 69~ 70 degrees*/};
|
|
constexpr float Deg111{1.935660155e+00f /*110~111 degrees*/};
|
|
constexpr float Deg_21{3.648638281e-01f /* 20~ 21 degrees*/};
|
|
static const AngularPoint AmbiPoints1O[]{
|
|
{ EvRadians{ Deg_35}, AzRadians{-Deg_45} },
|
|
{ EvRadians{ Deg_35}, AzRadians{-Deg135} },
|
|
{ EvRadians{ Deg_35}, AzRadians{ Deg_45} },
|
|
{ EvRadians{ Deg_35}, AzRadians{ Deg135} },
|
|
{ EvRadians{-Deg_35}, AzRadians{-Deg_45} },
|
|
{ EvRadians{-Deg_35}, AzRadians{-Deg135} },
|
|
{ EvRadians{-Deg_35}, AzRadians{ Deg_45} },
|
|
{ EvRadians{-Deg_35}, AzRadians{ Deg135} },
|
|
}, AmbiPoints2O[]{
|
|
{ EvRadians{-Deg_35}, AzRadians{-Deg_45} },
|
|
{ EvRadians{-Deg_35}, AzRadians{-Deg135} },
|
|
{ EvRadians{ Deg_35}, AzRadians{-Deg135} },
|
|
{ EvRadians{ Deg_35}, AzRadians{ Deg135} },
|
|
{ EvRadians{ Deg_35}, AzRadians{ Deg_45} },
|
|
{ EvRadians{-Deg_35}, AzRadians{ Deg_45} },
|
|
{ EvRadians{-Deg_35}, AzRadians{ Deg135} },
|
|
{ EvRadians{ Deg_35}, AzRadians{-Deg_45} },
|
|
{ EvRadians{-Deg_69}, AzRadians{-Deg_90} },
|
|
{ EvRadians{ Deg_69}, AzRadians{ Deg_90} },
|
|
{ EvRadians{-Deg_69}, AzRadians{ Deg_90} },
|
|
{ EvRadians{ Deg_69}, AzRadians{-Deg_90} },
|
|
{ EvRadians{ 0.0f}, AzRadians{-Deg_69} },
|
|
{ EvRadians{ 0.0f}, AzRadians{-Deg111} },
|
|
{ EvRadians{ 0.0f}, AzRadians{ Deg_69} },
|
|
{ EvRadians{ 0.0f}, AzRadians{ Deg111} },
|
|
{ EvRadians{-Deg_21}, AzRadians{ Deg180} },
|
|
{ EvRadians{ Deg_21}, AzRadians{ Deg180} },
|
|
{ EvRadians{ Deg_21}, AzRadians{ 0.0f} },
|
|
{ EvRadians{-Deg_21}, AzRadians{ 0.0f} },
|
|
};
|
|
static const float AmbiMatrix1O[][MaxAmbiChannels]{
|
|
{ 1.250000000e-01f, 1.250000000e-01f, 1.250000000e-01f, 1.250000000e-01f },
|
|
{ 1.250000000e-01f, 1.250000000e-01f, 1.250000000e-01f, -1.250000000e-01f },
|
|
{ 1.250000000e-01f, -1.250000000e-01f, 1.250000000e-01f, 1.250000000e-01f },
|
|
{ 1.250000000e-01f, -1.250000000e-01f, 1.250000000e-01f, -1.250000000e-01f },
|
|
{ 1.250000000e-01f, 1.250000000e-01f, -1.250000000e-01f, 1.250000000e-01f },
|
|
{ 1.250000000e-01f, 1.250000000e-01f, -1.250000000e-01f, -1.250000000e-01f },
|
|
{ 1.250000000e-01f, -1.250000000e-01f, -1.250000000e-01f, 1.250000000e-01f },
|
|
{ 1.250000000e-01f, -1.250000000e-01f, -1.250000000e-01f, -1.250000000e-01f },
|
|
}, AmbiMatrix2O[][MaxAmbiChannels]{
|
|
{ 5.000000000e-02f, 5.000000000e-02f, -5.000000000e-02f, 5.000000000e-02f, 6.454972244e-02f, -6.454972244e-02f, 0.000000000e+00f, -6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, 5.000000000e-02f, -5.000000000e-02f, -5.000000000e-02f, -6.454972244e-02f, -6.454972244e-02f, 0.000000000e+00f, 6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, 5.000000000e-02f, 5.000000000e-02f, -5.000000000e-02f, -6.454972244e-02f, 6.454972244e-02f, 0.000000000e+00f, -6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, -5.000000000e-02f, 5.000000000e-02f, -5.000000000e-02f, 6.454972244e-02f, -6.454972244e-02f, 0.000000000e+00f, -6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, -5.000000000e-02f, 5.000000000e-02f, 5.000000000e-02f, -6.454972244e-02f, -6.454972244e-02f, 0.000000000e+00f, 6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, -5.000000000e-02f, -5.000000000e-02f, 5.000000000e-02f, -6.454972244e-02f, 6.454972244e-02f, 0.000000000e+00f, -6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, -5.000000000e-02f, -5.000000000e-02f, -5.000000000e-02f, 6.454972244e-02f, 6.454972244e-02f, 0.000000000e+00f, 6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, 5.000000000e-02f, 5.000000000e-02f, 5.000000000e-02f, 6.454972244e-02f, 6.454972244e-02f, 0.000000000e+00f, 6.454972244e-02f, 0.000000000e+00f },
|
|
{ 5.000000000e-02f, 3.090169944e-02f, -8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -6.454972244e-02f, 9.045084972e-02f, 0.000000000e+00f, -1.232790000e-02f },
|
|
{ 5.000000000e-02f, -3.090169944e-02f, 8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -6.454972244e-02f, 9.045084972e-02f, 0.000000000e+00f, -1.232790000e-02f },
|
|
{ 5.000000000e-02f, -3.090169944e-02f, -8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, 6.454972244e-02f, 9.045084972e-02f, 0.000000000e+00f, -1.232790000e-02f },
|
|
{ 5.000000000e-02f, 3.090169944e-02f, 8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, 6.454972244e-02f, 9.045084972e-02f, 0.000000000e+00f, -1.232790000e-02f },
|
|
{ 5.000000000e-02f, 8.090169944e-02f, 0.000000000e+00f, 3.090169944e-02f, 6.454972244e-02f, 0.000000000e+00f, -5.590169944e-02f, 0.000000000e+00f, -7.216878365e-02f },
|
|
{ 5.000000000e-02f, 8.090169944e-02f, 0.000000000e+00f, -3.090169944e-02f, -6.454972244e-02f, 0.000000000e+00f, -5.590169944e-02f, 0.000000000e+00f, -7.216878365e-02f },
|
|
{ 5.000000000e-02f, -8.090169944e-02f, 0.000000000e+00f, 3.090169944e-02f, -6.454972244e-02f, 0.000000000e+00f, -5.590169944e-02f, 0.000000000e+00f, -7.216878365e-02f },
|
|
{ 5.000000000e-02f, -8.090169944e-02f, 0.000000000e+00f, -3.090169944e-02f, 6.454972244e-02f, 0.000000000e+00f, -5.590169944e-02f, 0.000000000e+00f, -7.216878365e-02f },
|
|
{ 5.000000000e-02f, 0.000000000e+00f, -3.090169944e-02f, -8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -3.454915028e-02f, 6.454972244e-02f, 8.449668365e-02f },
|
|
{ 5.000000000e-02f, 0.000000000e+00f, 3.090169944e-02f, -8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -3.454915028e-02f, -6.454972244e-02f, 8.449668365e-02f },
|
|
{ 5.000000000e-02f, 0.000000000e+00f, 3.090169944e-02f, 8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -3.454915028e-02f, 6.454972244e-02f, 8.449668365e-02f },
|
|
{ 5.000000000e-02f, 0.000000000e+00f, -3.090169944e-02f, 8.090169944e-02f, 0.000000000e+00f, 0.000000000e+00f, -3.454915028e-02f, -6.454972244e-02f, 8.449668365e-02f },
|
|
};
|
|
static const float AmbiOrderHFGain1O[MaxAmbiOrder+1]{
|
|
2.000000000e+00f, 1.154700538e+00f
|
|
}, AmbiOrderHFGain2O[MaxAmbiOrder+1]{
|
|
/*AMP 1.000000000e+00f, 7.745966692e-01f, 4.000000000e-01f*/
|
|
/*RMS*/ 9.128709292e-01f, 7.071067812e-01f, 3.651483717e-01f
|
|
/*ENRGY 2.357022604e+00f, 1.825741858e+00f, 9.428090416e-01f*/
|
|
};
|
|
|
|
static_assert(al::size(AmbiPoints1O) == al::size(AmbiMatrix1O), "First-Order Ambisonic HRTF mismatch");
|
|
static_assert(al::size(AmbiPoints2O) == al::size(AmbiMatrix2O), "Second-Order Ambisonic HRTF mismatch");
|
|
|
|
/* Don't bother with HOA when using full HRTF rendering. Nothing needs it,
|
|
* and it eases the CPU/memory load.
|
|
*/
|
|
device->mRenderMode = RenderMode::Hrtf;
|
|
uint ambi_order{1};
|
|
if(auto modeopt = device->configValue<std::string>(nullptr, "hrtf-mode"))
|
|
{
|
|
struct HrtfModeEntry {
|
|
char name[8];
|
|
RenderMode mode;
|
|
uint order;
|
|
};
|
|
static const HrtfModeEntry hrtf_modes[]{
|
|
{ "full", RenderMode::Hrtf, 1 },
|
|
{ "ambi1", RenderMode::Normal, 1 },
|
|
{ "ambi2", RenderMode::Normal, 2 },
|
|
};
|
|
|
|
const char *mode{modeopt->c_str()};
|
|
if(al::strcasecmp(mode, "basic") == 0 || al::strcasecmp(mode, "ambi3") == 0)
|
|
{
|
|
ERR("HRTF mode \"%s\" deprecated, substituting \"%s\"\n", mode, "ambi2");
|
|
mode = "ambi2";
|
|
}
|
|
|
|
auto match_entry = [mode](const HrtfModeEntry &entry) -> bool
|
|
{ return al::strcasecmp(mode, entry.name) == 0; };
|
|
auto iter = std::find_if(std::begin(hrtf_modes), std::end(hrtf_modes), match_entry);
|
|
if(iter == std::end(hrtf_modes))
|
|
ERR("Unexpected hrtf-mode: %s\n", mode);
|
|
else
|
|
{
|
|
device->mRenderMode = iter->mode;
|
|
ambi_order = iter->order;
|
|
}
|
|
}
|
|
TRACE("%u%s order %sHRTF rendering enabled, using \"%s\"\n", ambi_order,
|
|
(((ambi_order%100)/10) == 1) ? "th" :
|
|
((ambi_order%10) == 1) ? "st" :
|
|
((ambi_order%10) == 2) ? "nd" :
|
|
((ambi_order%10) == 3) ? "rd" : "th",
|
|
(device->mRenderMode == RenderMode::Hrtf) ? "+ Full " : "",
|
|
device->mHrtfName.c_str());
|
|
|
|
al::span<const AngularPoint> AmbiPoints{AmbiPoints1O};
|
|
const float (*AmbiMatrix)[MaxAmbiChannels]{AmbiMatrix1O};
|
|
al::span<const float,MaxAmbiOrder+1> AmbiOrderHFGain{AmbiOrderHFGain1O};
|
|
if(ambi_order >= 2)
|
|
{
|
|
AmbiPoints = AmbiPoints2O;
|
|
AmbiMatrix = AmbiMatrix2O;
|
|
AmbiOrderHFGain = AmbiOrderHFGain2O;
|
|
}
|
|
device->mAmbiOrder = ambi_order;
|
|
|
|
const size_t count{AmbiChannelsFromOrder(ambi_order)};
|
|
std::transform(AmbiIndex::FromACN().begin(), AmbiIndex::FromACN().begin()+count,
|
|
std::begin(device->Dry.AmbiMap),
|
|
[](const uint8_t &index) noexcept { return BFChannelConfig{1.0f, index}; }
|
|
);
|
|
AllocChannels(device, count, device->channelsFromFmt());
|
|
|
|
HrtfStore *Hrtf{device->mHrtf.get()};
|
|
auto hrtfstate = DirectHrtfState::Create(count);
|
|
hrtfstate->build(Hrtf, device->mIrSize, AmbiPoints, AmbiMatrix, device->mXOverFreq,
|
|
AmbiOrderHFGain);
|
|
device->mHrtfState = std::move(hrtfstate);
|
|
|
|
InitNearFieldCtrl(device, Hrtf->field[0].distance, ambi_order, true);
|
|
}
|
|
|
|
void InitUhjPanning(ALCdevice *device)
|
|
{
|
|
/* UHJ is always 2D first-order. */
|
|
constexpr size_t count{Ambi2DChannelsFromOrder(1)};
|
|
|
|
device->mAmbiOrder = 1;
|
|
|
|
auto acnmap_begin = AmbiIndex::FromFuMa().begin();
|
|
std::transform(acnmap_begin, acnmap_begin + count, std::begin(device->Dry.AmbiMap),
|
|
[](const uint8_t &acn) noexcept -> BFChannelConfig
|
|
{ return BFChannelConfig{1.0f/AmbiScale::FromUHJ()[acn], acn}; });
|
|
AllocChannels(device, count, device->channelsFromFmt());
|
|
}
|
|
|
|
} // namespace
|
|
|
|
void aluInitRenderer(ALCdevice *device, int hrtf_id, HrtfRequestMode hrtf_appreq,
|
|
HrtfRequestMode hrtf_userreq)
|
|
{
|
|
/* Hold the HRTF the device last used, in case it's used again. */
|
|
HrtfStorePtr old_hrtf{std::move(device->mHrtf)};
|
|
|
|
device->mHrtfState = nullptr;
|
|
device->mHrtf = nullptr;
|
|
device->mIrSize = 0;
|
|
device->mHrtfName.clear();
|
|
device->mXOverFreq = 400.0f;
|
|
device->mRenderMode = RenderMode::Normal;
|
|
|
|
if(device->FmtChans != DevFmtStereo)
|
|
{
|
|
old_hrtf = nullptr;
|
|
if(hrtf_appreq == Hrtf_Enable)
|
|
device->mHrtfStatus = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
|
|
|
|
const char *layout{nullptr};
|
|
switch(device->FmtChans)
|
|
{
|
|
case DevFmtQuad: layout = "quad"; break;
|
|
case DevFmtX51: layout = "surround51"; break;
|
|
case DevFmtX61: layout = "surround61"; break;
|
|
case DevFmtX71: layout = "surround71"; break;
|
|
/* Mono, Stereo, and Ambisonics output don't use custom decoders. */
|
|
case DevFmtMono:
|
|
case DevFmtStereo:
|
|
case DevFmtAmbi3D:
|
|
break;
|
|
}
|
|
|
|
std::unique_ptr<DecoderConfig<DualBand,MAX_OUTPUT_CHANNELS>> decoder_store;
|
|
DecoderView decoder{};
|
|
float speakerdists[MaxChannels]{};
|
|
auto load_config = [device,&decoder_store,&decoder,&speakerdists](const char *config)
|
|
{
|
|
AmbDecConf conf{};
|
|
if(auto err = conf.load(config))
|
|
{
|
|
ERR("Failed to load layout file %s\n", config);
|
|
ERR(" %s\n", err->c_str());
|
|
}
|
|
else if(conf.NumSpeakers > MAX_OUTPUT_CHANNELS)
|
|
ERR("Unsupported decoder speaker count %zu (max %d)\n", conf.NumSpeakers,
|
|
MAX_OUTPUT_CHANNELS);
|
|
else if(conf.ChanMask > Ambi3OrderMask)
|
|
ERR("Unsupported decoder channel mask 0x%04x (max 0x%x)\n", conf.ChanMask,
|
|
Ambi3OrderMask);
|
|
else
|
|
{
|
|
device->mXOverFreq = clampf(conf.XOverFreq, 100.0f, 1000.0f);
|
|
|
|
decoder_store = std::make_unique<DecoderConfig<DualBand,MAX_OUTPUT_CHANNELS>>();
|
|
decoder = MakeDecoderView(device, &conf, *decoder_store);
|
|
for(size_t i{0};i < decoder.mChannels.size();++i)
|
|
speakerdists[i] = conf.Speakers[i].Distance;
|
|
}
|
|
};
|
|
if(layout)
|
|
{
|
|
if(auto decopt = device->configValue<std::string>("decoder", layout))
|
|
load_config(decopt->c_str());
|
|
}
|
|
|
|
/* Enable the stablizer only for formats that have front-left, front-
|
|
* right, and front-center outputs.
|
|
*/
|
|
const bool stablize{device->RealOut.ChannelIndex[FrontCenter] != INVALID_CHANNEL_INDEX
|
|
&& device->RealOut.ChannelIndex[FrontLeft] != INVALID_CHANNEL_INDEX
|
|
&& device->RealOut.ChannelIndex[FrontRight] != INVALID_CHANNEL_INDEX
|
|
&& device->getConfigValueBool(nullptr, "front-stablizer", 0) != 0};
|
|
const bool hqdec{device->getConfigValueBool("decoder", "hq-mode", 1) != 0};
|
|
InitPanning(device, hqdec, stablize, decoder);
|
|
if(decoder.mOrder > 0)
|
|
{
|
|
float accum_dist{0.0f}, spkr_count{0.0f};
|
|
for(auto dist : speakerdists)
|
|
{
|
|
if(dist > 0.0f)
|
|
{
|
|
accum_dist += dist;
|
|
spkr_count += 1.0f;
|
|
}
|
|
}
|
|
if(spkr_count > 0)
|
|
{
|
|
InitNearFieldCtrl(device, accum_dist / spkr_count, decoder.mOrder, decoder.mIs3D);
|
|
InitDistanceComp(device, decoder, speakerdists);
|
|
}
|
|
}
|
|
if(auto *ambidec{device->AmbiDecoder.get()})
|
|
{
|
|
device->PostProcess = ambidec->hasStablizer() ? &ALCdevice::ProcessAmbiDecStablized
|
|
: &ALCdevice::ProcessAmbiDec;
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool headphones{device->IsHeadphones};
|
|
if(device->Type != DeviceType::Loopback)
|
|
{
|
|
if(auto modeopt = device->configValue<std::string>(nullptr, "stereo-mode"))
|
|
{
|
|
const char *mode{modeopt->c_str()};
|
|
if(al::strcasecmp(mode, "headphones") == 0)
|
|
headphones = true;
|
|
else if(al::strcasecmp(mode, "speakers") == 0)
|
|
headphones = false;
|
|
else if(al::strcasecmp(mode, "auto") != 0)
|
|
ERR("Unexpected stereo-mode: %s\n", mode);
|
|
}
|
|
}
|
|
|
|
if(hrtf_userreq == Hrtf_Default)
|
|
{
|
|
bool usehrtf = (headphones && hrtf_appreq != Hrtf_Disable) ||
|
|
(hrtf_appreq == Hrtf_Enable);
|
|
if(!usehrtf) goto no_hrtf;
|
|
|
|
device->mHrtfStatus = ALC_HRTF_ENABLED_SOFT;
|
|
if(headphones && hrtf_appreq != Hrtf_Disable)
|
|
device->mHrtfStatus = ALC_HRTF_HEADPHONES_DETECTED_SOFT;
|
|
}
|
|
else
|
|
{
|
|
if(hrtf_userreq != Hrtf_Enable)
|
|
{
|
|
if(hrtf_appreq == Hrtf_Enable)
|
|
device->mHrtfStatus = ALC_HRTF_DENIED_SOFT;
|
|
goto no_hrtf;
|
|
}
|
|
device->mHrtfStatus = ALC_HRTF_REQUIRED_SOFT;
|
|
}
|
|
|
|
if(device->mHrtfList.empty())
|
|
device->enumerateHrtfs();
|
|
|
|
if(hrtf_id >= 0 && static_cast<uint>(hrtf_id) < device->mHrtfList.size())
|
|
{
|
|
const std::string &hrtfname = device->mHrtfList[static_cast<uint>(hrtf_id)];
|
|
if(HrtfStorePtr hrtf{GetLoadedHrtf(hrtfname, device->Frequency)})
|
|
{
|
|
device->mHrtf = std::move(hrtf);
|
|
device->mHrtfName = hrtfname;
|
|
}
|
|
}
|
|
|
|
if(!device->mHrtf)
|
|
{
|
|
for(const auto &hrtfname : device->mHrtfList)
|
|
{
|
|
if(HrtfStorePtr hrtf{GetLoadedHrtf(hrtfname, device->Frequency)})
|
|
{
|
|
device->mHrtf = std::move(hrtf);
|
|
device->mHrtfName = hrtfname;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(device->mHrtf)
|
|
{
|
|
old_hrtf = nullptr;
|
|
|
|
HrtfStore *hrtf{device->mHrtf.get()};
|
|
device->mIrSize = hrtf->irSize;
|
|
if(auto hrtfsizeopt = device->configValue<uint>(nullptr, "hrtf-size"))
|
|
{
|
|
if(*hrtfsizeopt > 0 && *hrtfsizeopt < device->mIrSize)
|
|
device->mIrSize = maxu(*hrtfsizeopt, MinIrLength);
|
|
}
|
|
|
|
InitHrtfPanning(device);
|
|
device->PostProcess = &ALCdevice::ProcessHrtf;
|
|
return;
|
|
}
|
|
device->mHrtfStatus = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
|
|
|
|
no_hrtf:
|
|
old_hrtf = nullptr;
|
|
|
|
device->mRenderMode = RenderMode::Pairwise;
|
|
|
|
if(device->Type != DeviceType::Loopback)
|
|
{
|
|
if(auto cflevopt = device->configValue<int>(nullptr, "cf_level"))
|
|
{
|
|
if(*cflevopt > 0 && *cflevopt <= 6)
|
|
{
|
|
device->Bs2b = std::make_unique<bs2b>();
|
|
bs2b_set_params(device->Bs2b.get(), *cflevopt,
|
|
static_cast<int>(device->Frequency));
|
|
TRACE("BS2B enabled\n");
|
|
InitPanning(device);
|
|
device->PostProcess = &ALCdevice::ProcessBs2b;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(auto encopt = device->configValue<std::string>(nullptr, "stereo-encoding"))
|
|
{
|
|
const char *mode{encopt->c_str()};
|
|
if(al::strcasecmp(mode, "uhj") == 0)
|
|
device->mRenderMode = RenderMode::Normal;
|
|
else if(al::strcasecmp(mode, "panpot") != 0)
|
|
ERR("Unexpected stereo-encoding: %s\n", mode);
|
|
}
|
|
if(device->mRenderMode == RenderMode::Normal)
|
|
{
|
|
device->mUhjEncoder = std::make_unique<UhjEncoder>();
|
|
TRACE("UHJ enabled\n");
|
|
InitUhjPanning(device);
|
|
device->PostProcess = &ALCdevice::ProcessUhj;
|
|
return;
|
|
}
|
|
|
|
TRACE("Stereo rendering\n");
|
|
InitPanning(device);
|
|
device->PostProcess = &ALCdevice::ProcessAmbiDec;
|
|
}
|
|
|
|
|
|
void aluInitEffectPanning(EffectSlot *slot, ALCcontext *context)
|
|
{
|
|
DeviceBase *device{context->mDevice};
|
|
const size_t count{AmbiChannelsFromOrder(device->mAmbiOrder)};
|
|
|
|
auto wetbuffer_iter = context->mWetBuffers.end();
|
|
if(slot->mWetBuffer)
|
|
{
|
|
/* If the effect slot already has a wet buffer attached, allocate a new
|
|
* one in its place.
|
|
*/
|
|
wetbuffer_iter = context->mWetBuffers.begin();
|
|
for(;wetbuffer_iter != context->mWetBuffers.end();++wetbuffer_iter)
|
|
{
|
|
if(wetbuffer_iter->get() == slot->mWetBuffer)
|
|
{
|
|
slot->mWetBuffer = nullptr;
|
|
slot->Wet.Buffer = {};
|
|
|
|
*wetbuffer_iter = WetBufferPtr{new(FamCount(count)) WetBuffer{count}};
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(wetbuffer_iter == context->mWetBuffers.end())
|
|
{
|
|
/* Otherwise, search for an unused wet buffer. */
|
|
wetbuffer_iter = context->mWetBuffers.begin();
|
|
for(;wetbuffer_iter != context->mWetBuffers.end();++wetbuffer_iter)
|
|
{
|
|
if(!(*wetbuffer_iter)->mInUse)
|
|
break;
|
|
}
|
|
if(wetbuffer_iter == context->mWetBuffers.end())
|
|
{
|
|
/* Otherwise, allocate a new one to use. */
|
|
context->mWetBuffers.emplace_back(WetBufferPtr{new(FamCount(count)) WetBuffer{count}});
|
|
wetbuffer_iter = context->mWetBuffers.end()-1;
|
|
}
|
|
}
|
|
WetBuffer *wetbuffer{slot->mWetBuffer = wetbuffer_iter->get()};
|
|
wetbuffer->mInUse = true;
|
|
|
|
auto acnmap_begin = AmbiIndex::FromACN().begin();
|
|
auto iter = std::transform(acnmap_begin, acnmap_begin + count, slot->Wet.AmbiMap.begin(),
|
|
[](const uint8_t &acn) noexcept -> BFChannelConfig
|
|
{ return BFChannelConfig{1.0f, acn}; });
|
|
std::fill(iter, slot->Wet.AmbiMap.end(), BFChannelConfig{});
|
|
slot->Wet.Buffer = wetbuffer->mBuffer;
|
|
}
|