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, 341 deletions

diff --git a/Ryujinx.Audio.Renderer/Server/AudioRendererManager.cs b/Ryujinx.Audio.Renderer/Server/AudioRendererManager.cs
deleted file mode 100644
index f552935b..00000000
--- a/Ryujinx.Audio.Renderer/Server/AudioRendererManager.cs
+++ /dev/null
@@ -1,341 +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.Dsp;
-using Ryujinx.Audio.Renderer.Integration;
-using Ryujinx.Audio.Renderer.Parameter;
-using Ryujinx.Common.Logging;
-using Ryujinx.Memory;
-using System;
-using System.Diagnostics;
-using System.Threading;
-
-namespace Ryujinx.Audio.Renderer.Server
-{
-    /// <summary>
-    /// The audio renderer manager.
-    /// </summary>
-    public class AudioRendererManager : IDisposable
-    {
-        /// <summary>
-        /// Lock used for session allocation.
-        /// </summary>
-        private object _sessionLock = new object();
-
-        /// <summary>
-        /// Lock used to control the <see cref="AudioProcessor"/> running state.
-        /// </summary>
-        private object _audioProcessorLock = new object();
-
-        /// <summary>
-        /// The session ids allocation table.
-        /// </summary>
-        private int[] _sessionIds;
-
-        /// <summary>
-        /// The events linked to each session.
-        /// </summary>
-        private IWritableEvent[] _sessionsSystemEvent;
-
-        /// <summary>
-        /// The <see cref="AudioRenderSystem"/> sessions instances.
-        /// </summary>
-        private AudioRenderSystem[] _sessions;
-
-        /// <summary>
-        /// The count of active sessions.
-        /// </summary>
-        private int _activeSessionCount;
-
-        /// <summary>
-        /// The worker thread used to run <see cref="SendCommands"/>.
-        /// </summary>
-        private Thread _workerThread;
-
-        /// <summary>
-        /// Indicate if the worker thread and <see cref="AudioProcessor"/> are running.
-        /// </summary>
-        private bool _isRunning;
-
-        /// <summary>
-        /// The output devices associated to each session.
-        /// </summary>
-        // TODO: get ride of this with the audout rewrite.
-        public HardwareDevice[] OutputDevices { get; private set; }
-
-        /// <summary>
-        /// The <see cref="AudioProcessor"/> instance associated to this manager.
-        /// </summary>
-        public AudioProcessor Processor { get; }
-
-        /// <summary>
-        /// Create a new <see cref="AudioRendererManager"/>.
-        /// </summary>
-        public AudioRendererManager()
-        {
-            Processor = new AudioProcessor();
-            _sessionIds = new int[RendererConstants.AudioRendererSessionCountMax];
-            _sessions = new AudioRenderSystem[RendererConstants.AudioRendererSessionCountMax];
-            _activeSessionCount = 0;
-
-            for (int i = 0; i < _sessionIds.Length; i++)
-            {
-                _sessionIds[i] = i;
-            }
-        }
-
-        /// <summary>
-        /// Initialize the <see cref="AudioRendererManager"/>.
-        /// </summary>
-        /// <param name="sessionSystemEvents">The events associated to each session.</param>
-        /// <param name="devices">The output devices associated to each session.</param>
-        public void Initialize(IWritableEvent[] sessionSystemEvents, HardwareDevice[] devices)
-        {
-            _sessionsSystemEvent = sessionSystemEvents;
-            OutputDevices = devices;
-        }
-
-        /// <summary>
-        /// Get the work buffer size required by a session.
-        /// </summary>
-        /// <param name="parameter">The user configuration</param>
-        /// <returns>The work buffer size required by a session.</returns>
-        public static ulong GetWorkBufferSize(ref AudioRendererConfiguration parameter)
-        {
-            return AudioRenderSystem.GetWorkBufferSize(ref parameter);
-        }
-
-        /// <summary>
-        /// Acquire a new session id.
-        /// </summary>
-        /// <returns>A new session id.</returns>
-        private int AcquireSessionId()
-        {
-            lock (_sessionLock)
-            {
-                int index = _activeSessionCount;
-
-                Debug.Assert(index < _sessionIds.Length);
-
-                int sessionId = _sessionIds[index];
-
-                _sessionIds[index] = -1;
-
-                _activeSessionCount++;
-
-                Logger.Info?.Print(LogClass.AudioRenderer, $"Registered new renderer ({sessionId})");
-
-                return sessionId;
-            }
-        }
-
-        /// <summary>
-        /// Release a given <paramref name="sessionId"/>.
-        /// </summary>
-        /// <param name="sessionId">The session id to release.</param>
-        private void ReleaseSessionId(int sessionId)
-        {
-            lock (_sessionLock)
-            {
-                Debug.Assert(_activeSessionCount > 0);
-
-                int newIndex = --_activeSessionCount;
-
-                _sessionIds[newIndex] = sessionId;
-            }
-
-            Logger.Info?.Print(LogClass.AudioRenderer, $"Unregistered renderer ({sessionId})");
-        }
-
-        /// <summary>
-        /// Check if there is any audio renderer active.
-        /// </summary>
-        /// <returns>Returns true if there is any audio renderer active.</returns>
-        private bool HasAnyActiveRendererLocked()
-        {
-            foreach (AudioRenderSystem renderer in _sessions)
-            {
-                if (renderer != null)
-                {
-                    return true;
-                }
-            }
-
-            return false;
-        }
-
-        /// <summary>
-        /// Start the <see cref="AudioProcessor"/> and worker thread.
-        /// </summary>
-        private void StartLocked()
-        {
-            _isRunning = true;
-
-            // TODO: virtual device mapping (IAudioDevice)
-            Processor.SetOutputDevices(OutputDevices);
-            Processor.Start();
-
-            _workerThread = new Thread(SendCommands)
-            {
-                Name = "AudioRendererManager.Worker"
-            };
-
-            _workerThread.Start();
-        }
-
-        /// <summary>
-        /// Stop the <see cref="AudioProcessor"/> and worker thread.
-        /// </summary>
-        private void StopLocked()
-        {
-            _isRunning = false;
-
-            _workerThread.Join();
-            Processor.Stop();
-
-            Logger.Info?.Print(LogClass.AudioRenderer, "Stopped audio renderer");
-        }
-
-        /// <summary>
-        /// Worker main function. This is used to dispatch audio renderer commands to the <see cref="AudioProcessor"/>.
-        /// </summary>
-        private void SendCommands()
-        {
-            Logger.Info?.Print(LogClass.AudioRenderer, "Starting audio renderer");
-            Processor.Wait();
-
-            while (_isRunning)
-            {
-                lock (_sessionLock)
-                {
-                    foreach(AudioRenderSystem renderer in _sessions)
-                    {
-                        renderer?.SendCommands();
-                    }
-                }
-
-                Processor.Signal();
-                Processor.Wait();
-            }
-        }
-
-        /// <summary>
-        /// Register a new <see cref="AudioRenderSystem"/>.
-        /// </summary>
-        /// <param name="renderer">The <see cref="AudioRenderSystem"/> to register.</param>
-        private void Register(AudioRenderSystem renderer)
-        {
-            lock (_sessionLock)
-            {
-                _sessions[renderer.GetSessionId()] = renderer;
-            }
-
-            lock (_audioProcessorLock)
-            {
-                if (!_isRunning)
-                {
-                    StartLocked();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Unregister a new <see cref="AudioRenderSystem"/>.
-        /// </summary>
-        /// <param name="renderer">The <see cref="AudioRenderSystem"/> to unregister.</param>
-        internal void Unregister(AudioRenderSystem renderer)
-        {
-            lock (_sessionLock)
-            {
-                int sessionId = renderer.GetSessionId();
-
-                _sessions[renderer.GetSessionId()] = null;
-
-                ReleaseSessionId(sessionId);
-            }
-
-            lock (_audioProcessorLock)
-            {
-                if (_isRunning && !HasAnyActiveRendererLocked())
-                {
-                    StopLocked();
-                }
-            }
-        }
-
-        /// <summary>
-        /// Open a new <see cref="AudioRenderSystem"/>
-        /// </summary>
-        /// <param name="renderer">The new <see cref="AudioRenderSystem"/></param>
-        /// <param name="memoryManager">The memory manager that will be used for all guest memory operations.</param>
-        /// <param name="parameter">The user configuration</param>
-        /// <param name="appletResourceUserId">The applet resource user id of the application.</param>
-        /// <param name="workBufferAddress">The guest work buffer address.</param>
-        /// <param name="workBufferSize">The guest work buffer size.</param>
-        /// <param name="processHandle">The process handle of the application.</param>
-        /// <returns>A <see cref="ResultCode"/> reporting an error or a success.</returns>
-        public ResultCode OpenAudioRenderer(out AudioRenderSystem renderer, IVirtualMemoryManager memoryManager, ref AudioRendererConfiguration parameter, ulong appletResourceUserId, ulong workBufferAddress, ulong workBufferSize, uint processHandle)
-        {
-            int sessionId = AcquireSessionId();
-
-            AudioRenderSystem audioRenderer = new AudioRenderSystem(this, _sessionsSystemEvent[sessionId]);
-
-            ResultCode result = audioRenderer.Initialize(ref parameter, processHandle, workBufferAddress, workBufferSize, sessionId, appletResourceUserId, memoryManager);
-
-            if (result == ResultCode.Success)
-            {
-                renderer = audioRenderer;
-
-                Register(renderer);
-            }
-            else
-            {
-                ReleaseSessionId(sessionId);
-
-                renderer = null;
-            }
-
-            return result;
-        }
-
-        public void Dispose()
-        {
-            Dispose(true);
-        }
-
-        protected virtual void Dispose(bool disposing)
-        {
-            if (disposing)
-            {
-                lock (_audioProcessorLock)
-                {
-                    if (_isRunning)
-                    {
-                        StopLocked();
-                    }
-                }
-
-                Processor.Dispose();
-
-                foreach (HardwareDevice device in OutputDevices)
-                {
-                    device.Dispose();
-                }
-            }
-        }
-    }
-}