Haydn: Part 1 (#2007)

* Haydn: Part 1

Based on my reverse of audio 11.0.0.

As always, core implementation under LGPLv3 for the same reasons as for Amadeus.

This place the bases of a more flexible audio system while making audout & audin accurate.

This have the following improvements:
- Complete reimplementation of audout and audin.
- Audin currently only have a dummy backend.
- Dramatically reduce CPU usage by up to 50% in common cases (SoundIO and OpenAL).
- Audio Renderer now can output to 5.1 devices when supported.
- Audio Renderer init its backend on demand instead of keeping two up all the time.
- All backends implementation are now in their own project.
- Ryujinx.Audio.Renderer was renamed Ryujinx.Audio and was refactored because of this.

As a note, games having issues with OpenAL haven't improved and will not
because of OpenAL design (stopping when buffers finish playing causing
possible audio "pops" when buffers are very small).

* Update for latest hexkyz's edits on Switchbrew

* audren: Rollback channel configuration changes

* Address gdkchan's comments

* Fix typo in OpenAL backend driver

* Address last comments

* Fix a nit

* Address gdkchan's comments

4 files changed, 0 insertions, 310 deletions

diff --git a/Ryujinx.Audio.Renderer/Dsp/Effect/DecayDelay.cs b/Ryujinx.Audio.Renderer/Dsp/Effect/DecayDelay.cs
deleted file mode 100644
index 8a815c56..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/Effect/DecayDelay.cs
+++ /dev/null
@@ -1,69 +0,0 @@
-//
-// Copyright (c) 2019-2021 Ryujinx
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program 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 Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-//
-
-namespace Ryujinx.Audio.Renderer.Dsp.Effect
-{
-    public class DecayDelay : IDelayLine
-    {
-        private readonly IDelayLine _delayLine;
-
-        public uint CurrentSampleCount => _delayLine.CurrentSampleCount;
-
-        public uint SampleCountMax => _delayLine.SampleCountMax;
-
-        private float _decayRate;
-
-        public DecayDelay(IDelayLine delayLine)
-        {
-            _decayRate = 0.0f;
-            _delayLine = delayLine;
-        }
-
-        public void SetDecayRate(float decayRate)
-        {
-            _decayRate = decayRate;
-        }
-
-        public float Update(float value)
-        {
-            float delayLineValue = _delayLine.Read();
-            float processedValue = value - (_decayRate * delayLineValue);
-
-            return _delayLine.Update(processedValue) + processedValue * _decayRate;
-        }
-
-        public void SetDelay(float delayTime)
-        {
-            _delayLine.SetDelay(delayTime);
-        }
-
-        public float Read()
-        {
-            return _delayLine.Read();
-        }
-
-        public float TapUnsafe(uint sampleIndex, int offset)
-        {
-            return _delayLine.TapUnsafe(sampleIndex, offset);
-        }
-
-        public float Tap(uint sampleIndex)
-        {
-            return _delayLine.Tap(sampleIndex);
-        }
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLine.cs b/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLine.cs
deleted file mode 100644
index d178e699..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLine.cs
+++ /dev/null
@@ -1,95 +0,0 @@
-//
-// Copyright (c) 2019-2021 Ryujinx
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program 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 Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-//
-
-using System;
-
-namespace Ryujinx.Audio.Renderer.Dsp.Effect
-{
-    public class DelayLine : IDelayLine
-    {
-        private float[] _workBuffer;
-        private uint _sampleRate;
-        private uint _currentSampleIndex;
-        private uint _lastSampleIndex;
-
-        public uint CurrentSampleCount { get; private set; }
-        public uint SampleCountMax { get; private set; }
-
-        public DelayLine(uint sampleRate, float delayTimeMax)
-        {
-            _sampleRate = sampleRate;
-            SampleCountMax = IDelayLine.GetSampleCount(_sampleRate, delayTimeMax);
-            _workBuffer = new float[SampleCountMax];
-
-            SetDelay(delayTimeMax);
-        }
-
-        private void ConfigureDelay(uint targetSampleCount)
-        {
-            CurrentSampleCount = Math.Min(SampleCountMax, targetSampleCount);
-            _currentSampleIndex = 0;
-
-            if (CurrentSampleCount == 0)
-            {
-                _lastSampleIndex = 0;
-            }
-            else
-            {
-                _lastSampleIndex = CurrentSampleCount - 1;
-            }
-        }
-
-        public void SetDelay(float delayTime)
-        {
-            ConfigureDelay(IDelayLine.GetSampleCount(_sampleRate, delayTime));
-        }
-
-        public float Read()
-        {
-            return _workBuffer[_currentSampleIndex];
-        }
-
-        public float Update(float value)
-        {
-            float output = Read();
-
-            _workBuffer[_currentSampleIndex++] = value;
-
-            if (_currentSampleIndex >= _lastSampleIndex)
-            {
-                _currentSampleIndex = 0;
-            }
-
-            return output;
-        }
-
-        public float TapUnsafe(uint sampleIndex, int offset)
-        {
-            return IDelayLine.Tap(_workBuffer, (int)_currentSampleIndex, (int)sampleIndex + offset, (int)CurrentSampleCount);
-        }
-
-        public float Tap(uint sampleIndex)
-        {
-            if (sampleIndex >= CurrentSampleCount)
-            {
-                sampleIndex = CurrentSampleCount - 1;
-            }
-
-            return TapUnsafe(sampleIndex, -1);
-        }
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLineReverb3d.cs b/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLineReverb3d.cs
deleted file mode 100644
index a30dcc63..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/Effect/DelayLineReverb3d.cs
+++ /dev/null
@@ -1,93 +0,0 @@
-//
-// Copyright (c) 2019-2021 Ryujinx
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program 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 Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-//
-
-using System.Diagnostics;
-
-namespace Ryujinx.Audio.Renderer.Dsp.Effect
-{
-    public class DelayLine3d : IDelayLine
-    {
-        private float[] _workBuffer;
-        private uint _sampleRate;
-        private uint _currentSampleIndex;
-        private uint _lastSampleIndex;
-
-        public uint CurrentSampleCount { get; private set; }
-        public uint SampleCountMax { get; private set; }
-
-        public DelayLine3d(uint sampleRate, float delayTimeMax)
-        {
-            _sampleRate = sampleRate;
-            SampleCountMax = IDelayLine.GetSampleCount(_sampleRate, delayTimeMax);
-            _workBuffer = new float[SampleCountMax + 1];
-
-            SetDelay(delayTimeMax);
-        }
-
-        private void ConfigureDelay(uint targetSampleCount)
-        {
-            if (SampleCountMax >= targetSampleCount)
-            {
-                CurrentSampleCount = targetSampleCount;
-                _lastSampleIndex = (_currentSampleIndex + targetSampleCount) % (SampleCountMax + 1);
-            }
-        }
-
-        public void SetDelay(float delayTime)
-        {
-            ConfigureDelay(IDelayLine.GetSampleCount(_sampleRate, delayTime));
-        }
-
-        public float Read()
-        {
-            return _workBuffer[_currentSampleIndex];
-        }
-
-        public float Update(float value)
-        {
-            Debug.Assert(!float.IsNaN(value) && !float.IsInfinity(value));
-
-            _workBuffer[_lastSampleIndex++] = value;
-
-            float output = Read();
-
-            _currentSampleIndex++;
-
-            if (_currentSampleIndex >= SampleCountMax)
-            {
-                _currentSampleIndex = 0;
-            }
-
-            if (_lastSampleIndex >= SampleCountMax)
-            {
-                _lastSampleIndex = 0;
-            }
-
-            return output;
-        }
-
-        public float TapUnsafe(uint sampleIndex, int offset)
-        {
-            return IDelayLine.Tap(_workBuffer, (int)_lastSampleIndex, (int)sampleIndex + offset, (int)SampleCountMax + 1);
-        }
-
-        public float Tap(uint sampleIndex)
-        {
-            return TapUnsafe(sampleIndex, -1);
-        }
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Dsp/Effect/IDelayLine.cs b/Ryujinx.Audio.Renderer/Dsp/Effect/IDelayLine.cs
deleted file mode 100644
index ac59445e..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/Effect/IDelayLine.cs
+++ /dev/null
@@ -1,53 +0,0 @@
-//
-// Copyright (c) 2019-2021 Ryujinx
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program 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 Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-//
-
-using System;
-using System.Runtime.CompilerServices;
-
-namespace Ryujinx.Audio.Renderer.Dsp.Effect
-{
-    public interface IDelayLine
-    {
-        uint CurrentSampleCount { get; }
-        uint SampleCountMax { get; }
-
-        void SetDelay(float delayTime);
-        float Read();
-        float Update(float value);
-
-        float TapUnsafe(uint sampleIndex, int offset);
-        float Tap(uint sampleIndex);
-
-        public static float Tap(Span<float> workBuffer, int baseIndex, int sampleIndex, int delaySampleCount)
-        {
-            int targetIndex = baseIndex - sampleIndex;
-
-            if (targetIndex < 0)
-            {
-                targetIndex += delaySampleCount;
-            }
-
-            return workBuffer[targetIndex];
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static uint GetSampleCount(uint sampleRate, float delayTime)
-        {
-            return (uint)MathF.Round(sampleRate * delayTime);
-        }
-    }
-}