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/Server/Performance/PerformanceFrameHeaderVersion1.cs

@@ -1,118 +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.Runtime.InteropServices;
-
-namespace Ryujinx.Audio.Renderer.Server.Performance
-{
-    /// <summary>
-    /// Implementation of <see cref="IPerformanceHeader"/> for performance metrics version 1.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x18)]
-    public struct PerformanceFrameHeaderVersion1 : IPerformanceHeader
-    {
-        /// <summary>
-        /// The magic of the performance header.
-        /// </summary>
-        public uint Magic;
-
-        /// <summary>
-        /// The total count of entries in this frame.
-        /// </summary>
-        public int EntryCount;
-
-        /// <summary>
-        /// The total count of detailed entries in this frame.
-        /// </summary>
-        public int EntryDetailCount;
-
-        /// <summary>
-        /// The offset of the next performance header.
-        /// </summary>
-        public int NextOffset;
-
-        /// <summary>
-        /// The total time taken by all the commands profiled.
-        /// </summary>
-        public int TotalProcessingTime;
-
-        /// <summary>
-        /// The count of voices that were dropped.
-        /// </summary>
-        public uint VoiceDropCount;
-
-        public int GetEntryCount()
-        {
-            return EntryCount;
-        }
-
-        public int GetEntryCountOffset()
-        {
-            return 4;
-        }
-
-        public int GetEntryDetailCount()
-        {
-            return EntryDetailCount;
-        }
-
-        public void SetDspRunningBehind(bool isRunningBehind)
-        {
-            // NOTE: Not present in version 1
-        }
-
-        public void SetEntryCount(int entryCount)
-        {
-            EntryCount = entryCount;
-        }
-
-        public void SetEntryDetailCount(int entryDetailCount)
-        {
-            EntryDetailCount = entryDetailCount;
-        }
-
-        public void SetIndex(uint index)
-        {
-            // NOTE: Not present in version 1
-        }
-
-        public void SetMagic(uint magic)
-        {
-            Magic = magic;
-        }
-
-        public void SetNextOffset(int nextOffset)
-        {
-            NextOffset = nextOffset;
-        }
-
-        public void SetStartRenderingTicks(ulong startTicks)
-        {
-            // NOTE: not present in version 1
-        }
-
-        public void SetTotalProcessingTime(int totalProcessingTime)
-        {
-            TotalProcessingTime = totalProcessingTime;
-        }
-
-        public void SetVoiceDropCount(uint voiceCount)
-        {
-            VoiceDropCount = voiceCount;
-        }
-    }
-}