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

3 files changed, 0 insertions, 207 deletions

diff --git a/Ryujinx.Audio.Renderer/Device/VirtualDevice.cs b/Ryujinx.Audio.Renderer/Device/VirtualDevice.cs
deleted file mode 100644
index 29395e5c..00000000
--- a/Ryujinx.Audio.Renderer/Device/VirtualDevice.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 System.Diagnostics;
-
-namespace Ryujinx.Audio.Renderer.Device
-{
-    /// <summary>
-    /// Represents a virtual device used by IAudioDevice.
-    /// </summary>
-    public class VirtualDevice
-    {
-        /// <summary>
-        /// All the defined virtual devices.
-        /// </summary>
-        public static readonly VirtualDevice[] Devices = new VirtualDevice[4]
-        {
-            new VirtualDevice("AudioStereoJackOutput", 2),
-            new VirtualDevice("AudioBuiltInSpeakerOutput", 2),
-            new VirtualDevice("AudioTvOutput", 6),
-            new VirtualDevice("AudioUsbDeviceOutput", 2),
-        };
-
-        /// <summary>
-        /// The name of the <see cref="VirtualDevice"/>.
-        /// </summary>
-        public string Name { get; }
-
-        /// <summary>
-        /// The count of channels supported by the <see cref="VirtualDevice"/>.
-        /// </summary>
-        public uint ChannelCount { get; }
-
-        /// <summary>
-        /// The system master volume of the <see cref="VirtualDevice"/>.
-        /// </summary>
-        public float MasterVolume { get; private set; }
-
-        /// <summary>
-        /// Create a new <see cref="VirtualDevice"/> instance.
-        /// </summary>
-        /// <param name="name">The name of the <see cref="VirtualDevice"/>.</param>
-        /// <param name="channelCount">The count of channels supported by the <see cref="VirtualDevice"/>.</param>
-        private VirtualDevice(string name, uint channelCount)
-        {
-            Name = name;
-            ChannelCount = channelCount;
-        }
-
-        /// <summary>
-        /// Update the master volume of the <see cref="VirtualDevice"/>.
-        /// </summary>
-        /// <param name="volume">The new master volume.</param>
-        public void UpdateMasterVolume(float volume)
-        {
-            Debug.Assert(volume >= 0.0f && volume <= 1.0f);
-
-            MasterVolume = volume;
-        }
-
-        /// <summary>
-        /// Check if the <see cref="VirtualDevice"/> is a usb device.
-        /// </summary>
-        /// <returns>Returns true if the <see cref="VirtualDevice"/> is a usb device.</returns>
-        public bool IsUsbDevice()
-        {
-            return Name.Equals("AudioUsbDeviceOutput");
-        }
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Device/VirtualDeviceSession.cs b/Ryujinx.Audio.Renderer/Device/VirtualDeviceSession.cs
deleted file mode 100644
index b2669418..00000000
--- a/Ryujinx.Audio.Renderer/Device/VirtualDeviceSession.cs
+++ /dev/null
@@ -1,44 +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/>.
-//
-
-namespace Ryujinx.Audio.Renderer.Device
-{
-    /// <summary>
-    /// Represents a virtual device session used by IAudioDevice.
-    /// </summary>
-    public class VirtualDeviceSession
-    {
-        /// <summary>
-        /// The <see cref="VirtualDevice"/> associated to this session.
-        /// </summary>
-        public VirtualDevice Device { get; }
-
-        /// <summary>
-        /// The user volume of this session.
-        /// </summary>
-        public float Volume { get; set; }
-
-        /// <summary>
-        /// Create a new <see cref="VirtualDeviceSession"/> instance.
-        /// </summary>
-        /// <param name="virtualDevice">The <see cref="VirtualDevice"/> associated to this session.</param>
-        public VirtualDeviceSession(VirtualDevice virtualDevice)
-        {
-            Device = virtualDevice;
-        }
-    }
-}
diff --git a/Ryujinx.Audio.Renderer/Device/VirtualDeviceSessionRegistry.cs b/Ryujinx.Audio.Renderer/Device/VirtualDeviceSessionRegistry.cs
deleted file mode 100644
index ed6806b2..00000000
--- a/Ryujinx.Audio.Renderer/Device/VirtualDeviceSessionRegistry.cs
+++ /dev/null
@@ -1,79 +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.Collections.Generic;
-
-namespace Ryujinx.Audio.Renderer.Device
-{
-    /// <summary>
-    /// Represent an instance containing a registry of <see cref="VirtualDeviceSession"/>.
-    /// </summary>
-    public class VirtualDeviceSessionRegistry
-    {
-        /// <summary>
-        /// The session registry, used to store the sessions of a given AppletResourceId.
-        /// </summary>
-        private Dictionary<ulong, VirtualDeviceSession[]> _sessionsRegistry = new Dictionary<ulong, VirtualDeviceSession[]>();
-
-        /// <summary>
-        /// The default <see cref="VirtualDevice"/>.
-        /// </summary>
-        /// <remarks>This is used when the USB device is the default one on older revision.</remarks>
-        public VirtualDevice DefaultDevice => VirtualDevice.Devices[0];
-
-        /// <summary>
-        /// The current active <see cref="VirtualDevice"/>.
-        /// </summary>
-        // TODO: make this configurable
-        public VirtualDevice ActiveDevice = VirtualDevice.Devices[1];
-
-        /// <summary>
-        /// Get the associated <see cref="T:VirtualDeviceSession[]"/> from an AppletResourceId.
-        /// </summary>
-        /// <param name="resourceAppletId">The AppletResourceId used.</param>
-        /// <returns>The associated <see cref="T:VirtualDeviceSession[]"/> from an AppletResourceId.</returns>
-        public VirtualDeviceSession[] GetSessionByAppletResourceId(ulong resourceAppletId)
-        {
-            if (_sessionsRegistry.TryGetValue(resourceAppletId, out VirtualDeviceSession[] result))
-            {
-                return result;
-            }
-
-            result = CreateSessionsFromBehaviourContext();
-
-            _sessionsRegistry.Add(resourceAppletId, result);
-
-            return result;
-        }
-
-        /// <summary>
-        /// Create a new array of sessions for each <see cref="VirtualDevice"/>.
-        /// </summary>
-        /// <returns>A new array of sessions for each <see cref="VirtualDevice"/>.</returns>
-        private static VirtualDeviceSession[] CreateSessionsFromBehaviourContext()
-        {
-            VirtualDeviceSession[] virtualDeviceSession = new VirtualDeviceSession[VirtualDevice.Devices.Length];
-
-            for (int i = 0; i < virtualDeviceSession.Length; i++)
-            {
-                virtualDeviceSession[i] = new VirtualDeviceSession(VirtualDevice.Devices[i]);
-            }
-
-            return virtualDeviceSession;
-        }
-    }
-}