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
---
 Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs | 105 ---------------------
 1 file changed, 105 deletions(-)
 delete mode 100644 Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs

(limited to 'Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs')

diff --git a/Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs b/Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs
deleted file mode 100644
index d5cbb8df..00000000
--- a/Ryujinx.Audio.Renderer/Utils/FileHardwareDevice.cs
+++ /dev/null
@@ -1,105 +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.Integration;
-using System;
-using System.IO;
-using System.Runtime.InteropServices;
-using System.Text;
-
-namespace Ryujinx.Audio.Renderer.Utils
-{
-    /// <summary>
-    /// A <see cref="HardwareDevice"/> that outputs to a wav file.
-    /// </summary>
-    public class FileHardwareDevice : HardwareDevice
-    {
-        private FileStream _stream;
-        private uint _channelCount;
-        private uint _sampleRate;
-
-        private const int HeaderSize = 44;
-
-        public FileHardwareDevice(string path, uint channelCount, uint sampleRate)
-        {
-            _stream = File.OpenWrite(path);
-            _channelCount = channelCount;
-            _sampleRate = sampleRate;
-
-            _stream.Seek(HeaderSize, SeekOrigin.Begin);
-        }
-
-        private void UpdateHeader()
-        {
-            var writer = new BinaryWriter(_stream);
-
-            long currentPos = writer.Seek(0, SeekOrigin.Current);
-
-            writer.Seek(0, SeekOrigin.Begin);
-
-            writer.Write(Encoding.ASCII.GetBytes("RIFF"));
-            writer.Write((int)(writer.BaseStream.Length - 8));
-            writer.Write(Encoding.ASCII.GetBytes("WAVE"));
-            writer.Write(Encoding.ASCII.GetBytes("fmt "));
-            writer.Write(16);
-            writer.Write((short)1);
-            writer.Write((short)GetChannelCount());
-            writer.Write(GetSampleRate());
-            writer.Write(GetSampleRate() * GetChannelCount() * sizeof(short));
-            writer.Write((short)(GetChannelCount() * sizeof(short)));
-            writer.Write((short)(sizeof(short) * 8));
-            writer.Write(Encoding.ASCII.GetBytes("data"));
-            writer.Write((int)(writer.BaseStream.Length - HeaderSize));
-
-            writer.Seek((int)currentPos, SeekOrigin.Begin);
-        }
-
-        public void AppendBuffer(ReadOnlySpan<short> data, uint channelCount)
-        {
-            _stream.Write(MemoryMarshal.Cast<short, byte>(data));
-
-            UpdateHeader();
-            _stream.Flush();
-        }
-
-        public uint GetChannelCount()
-        {
-            return _channelCount;
-        }
-
-        public uint GetSampleRate()
-        {
-            return _sampleRate;
-        }
-
-        public void Dispose()
-        {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
-            if (disposing)
-            {
-                _stream?.Flush();
-                _stream?.Dispose();
-
-                _stream = null;
-            }
-        }
-    }
-}
-- 
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