From f556c80d0230056335632b60c71f1567e177239e Mon Sep 17 00:00:00 2001
From: Mary <me@thog.eu>
Date: Fri, 26 Feb 2021 01:11:56 +0100
Subject: 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
---
 .../Dsp/Command/UpsampleCommand.cs                 | 87 ----------------------
 1 file changed, 87 deletions(-)
 delete mode 100644 Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs

(limited to 'Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs')

diff --git a/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs b/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs
deleted file mode 100644
index 3bfaa0f6..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs
+++ /dev/null
@@ -1,87 +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 Ryujinx.Audio.Renderer.Server.Upsampler;
-using System;
-using System.Runtime.CompilerServices;
-
-namespace Ryujinx.Audio.Renderer.Dsp.Command
-{
-    public class UpsampleCommand : ICommand
-    {
-        public bool Enabled { get; set; }
-
-        public int NodeId { get; }
-
-        public CommandType CommandType => CommandType.Upsample;
-
-        public ulong EstimatedProcessingTime { get; set; }
-
-        public uint BufferCount { get; }
-        public uint InputBufferIndex { get; }
-        public uint InputSampleCount { get; }
-        public uint InputSampleRate { get; }
-
-        public UpsamplerState UpsamplerInfo { get; }
-
-        public Memory<float> OutBuffer { get; }
-
-        public UpsampleCommand(uint bufferOffset, UpsamplerState info, uint inputCount, Span<byte> inputBufferOffset, uint bufferCount, uint sampleCount, uint sampleRate, int nodeId)
-        {
-            Enabled = true;
-            NodeId = nodeId;
-
-            InputBufferIndex = 0;
-            OutBuffer = info.OutputBuffer;
-            BufferCount = bufferCount;
-            InputSampleCount = sampleCount;
-            InputSampleRate = sampleRate;
-            info.SourceSampleCount = inputCount;
-            info.InputBufferIndices = new ushort[inputCount];
-
-            for (int i = 0; i < inputCount; i++)
-            {
-                info.InputBufferIndices[i] = (ushort)(bufferOffset + inputBufferOffset[i]);
-            }
-
-            UpsamplerInfo = info;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private Span<float> GetBuffer(int index, int sampleCount)
-        {
-            return UpsamplerInfo.OutputBuffer.Span.Slice(index * sampleCount, sampleCount);
-        }
-
-        public void Process(CommandList context)
-        {
-            float ratio = (float)InputSampleRate / RendererConstants.TargetSampleRate;
-
-            uint bufferCount = Math.Min(BufferCount, UpsamplerInfo.SourceSampleCount);
-
-            for (int i = 0; i < bufferCount; i++)
-            {
-                Span<float> inputBuffer = context.GetBuffer(UpsamplerInfo.InputBufferIndices[i]);
-                Span<float> outputBuffer = GetBuffer(UpsamplerInfo.InputBufferIndices[i], (int)UpsamplerInfo.SampleCount);
-
-                float fraction = 0.0f;
-
-                ResamplerHelper.ResampleForUpsampler(outputBuffer, inputBuffer, ratio, ref fraction, (int)(InputSampleCount / ratio));
-            }
-        }
-    }
-}
-- 
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