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

1 files changed, 0 insertions, 84 deletions

diff --git a/Ryujinx.Audio.Renderer/Parameter/SplitterDestinationInParameter.cs b/Ryujinx.Audio.Renderer/Parameter/SplitterDestinationInParameter.cs
deleted file mode 100644
index a1c18d57..00000000
--- a/Ryujinx.Audio.Renderer/Parameter/SplitterDestinationInParameter.cs
+++ /dev/null
@@ -1,84 +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.Common.Utilities;
-using System;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.Audio.Renderer.Parameter
-{
-    /// <summary>
-    /// Input header for a splitter destination update.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential, Pack = 1)]
-    public struct SplitterDestinationInParameter
-    {
-        /// <summary>
-        /// Magic of the input header.
-        /// </summary>
-        public uint Magic;
-
-        /// <summary>
-        /// Target splitter destination data id.
-        /// </summary>
-        public int Id;
-
-        /// <summary>
-        /// Mix buffer volumes storage.
-        /// </summary>
-        private MixArray _mixBufferVolume;
-
-        /// <summary>
-        /// The mix to output the result of the splitter.
-        /// </summary>
-        public int DestinationId;
-
-        /// <summary>
-        /// Set to true if in use.
-        /// </summary>
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsUsed;
-
-        /// <summary>
-        /// Reserved/padding.
-        /// </summary>
-        private unsafe fixed byte _reserved[3];
-
-        [StructLayout(LayoutKind.Sequential, Size = 4 * RendererConstants.MixBufferCountMax, Pack = 1)]
-        private struct MixArray { }
-
-        /// <summary>
-        /// Mix buffer volumes.
-        /// </summary>
-        /// <remarks>Used when a splitter id is specified in the mix.</remarks>
-        public Span<float> MixBufferVolume => SpanHelpers.AsSpan<MixArray, float>(ref _mixBufferVolume);
-
-        /// <summary>
-        /// The expected constant of any input header.
-        /// </summary>
-        private const uint ValidMagic = 0x44444E53;
-
-        /// <summary>
-        /// Check if the magic is valid.
-        /// </summary>
-        /// <returns>Returns true if the magic is valid.</returns>
-        public bool IsMagicValid()
-        {
-            return Magic == ValidMagic;
-        }
-    }
-}