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

2 files changed, 0 insertions, 153 deletions

diff --git a/Ryujinx.Audio.Renderer/Parameter/Sink/CircularBufferParameter.cs b/Ryujinx.Audio.Renderer/Parameter/Sink/CircularBufferParameter.cs
deleted file mode 100644
index d688529a..00000000
--- a/Ryujinx.Audio.Renderer/Parameter/Sink/CircularBufferParameter.cs
+++ /dev/null
@@ -1,78 +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.Common;
-using Ryujinx.Common.Memory;
-using System.Runtime.InteropServices;
-
-using CpuAddress = System.UInt64;
-
-namespace Ryujinx.Audio.Renderer.Parameter.Sink
-{
-    /// <summary>
-    /// <see cref="SinkInParameter.SpecificData"/> for <see cref="SinkType.CircularBuffer"/>.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential, Pack = 1)]
-    public struct CircularBufferParameter
-    {
-        /// <summary>
-        /// The CPU address of the user circular buffer.
-        /// </summary>
-        public CpuAddress BufferAddress;
-
-        /// <summary>
-        /// The size of the user circular buffer.
-        /// </summary>
-        public uint BufferSize;
-
-        /// <summary>
-        /// The total count of channels to output to the circular buffer.
-        /// </summary>
-        public uint InputCount;
-
-        /// <summary>
-        /// The target sample count to output per update in the circular buffer.
-        /// </summary>
-        public uint SampleCount;
-
-        /// <summary>
-        /// Last read offset on the CPU side.
-        /// </summary>
-        public uint LastReadOffset;
-
-        /// <summary>
-        /// The target <see cref="SampleFormat"/>.
-        /// </summary>
-        /// <remarks>Only <see cref="SampleFormat.PcmInt16"/> is supported.</remarks>
-        public SampleFormat SampleFormat;
-
-        /// <summary>
-        /// Reserved/padding.
-        /// </summary>
-        private unsafe fixed byte _reserved1[3];
-
-        /// <summary>
-        /// The input channels index that will be used.
-        /// </summary>
-        public Array6<byte> Input;
-
-        /// <summary>
-        /// Reserved/padding.
-        /// </summary>
-        private ushort _reserved2;
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Parameter/Sink/DeviceParameter.cs b/Ryujinx.Audio.Renderer/Parameter/Sink/DeviceParameter.cs
deleted file mode 100644
index 591b4945..00000000
--- a/Ryujinx.Audio.Renderer/Parameter/Sink/DeviceParameter.cs
+++ /dev/null
@@ -1,75 +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.Memory;
-using Ryujinx.Common.Utilities;
-using System;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.Audio.Renderer.Parameter.Sink
-{
-    /// <summary>
-    /// <see cref="SinkInParameter.SpecificData"/> for <see cref="Common.SinkType.Device"/>.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential, Pack = 1)]
-    public struct DeviceParameter
-    {
-        /// <summary>
-        /// Device name storage.
-        /// </summary>
-        private DeviceNameStruct _deviceName;
-
-        /// <summary>
-        /// Reserved/padding.
-        /// </summary>
-        private byte _padding;
-
-        /// <summary>
-        /// The total count of channels to output to the device.
-        /// </summary>
-        public uint InputCount;
-
-        /// <summary>
-        /// The input channels index that will be used.
-        /// </summary>
-        public Array6<byte> Input;
-
-        /// <summary>
-        /// Reserved/padding.
-        /// </summary>
-        private byte _reserved;
-
-        /// <summary>
-        /// Set to true if the user controls Surround to Stereo downmixing coefficients.
-        /// </summary>
-        [MarshalAs(UnmanagedType.I1)]
-        public bool DownMixParameterEnabled;
-
-        /// <summary>
-        /// The user Surround to Stereo downmixing coefficients.
-        /// </summary>
-        public Array4<float> DownMixParameter;
-
-        [StructLayout(LayoutKind.Sequential, Size = 0xFF, Pack = 1)]
-        private struct DeviceNameStruct { }
-
-        /// <summary>
-        /// The output device name.
-        /// </summary>
-        public Span<byte> DeviceName => SpanHelpers.AsSpan<DeviceNameStruct, byte>(ref _deviceName);
-    }
-}