From f556c80d0230056335632b60c71f1567e177239e Mon Sep 17 00:00:00 2001
From: Mary <me@thog.eu>
Date: Fri, 26 Feb 2021 01:11:56 +0100
Subject: 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/Utils/BitArray.cs | 120 -------------------------------
 1 file changed, 120 deletions(-)
 delete mode 100644 Ryujinx.Audio.Renderer/Utils/BitArray.cs

(limited to 'Ryujinx.Audio.Renderer/Utils/BitArray.cs')

diff --git a/Ryujinx.Audio.Renderer/Utils/BitArray.cs b/Ryujinx.Audio.Renderer/Utils/BitArray.cs
deleted file mode 100644
index 6109dd01..00000000
--- a/Ryujinx.Audio.Renderer/Utils/BitArray.cs
+++ /dev/null
@@ -1,120 +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;
-using System.Runtime.CompilerServices;
-
-namespace Ryujinx.Audio.Renderer.Utils
-{
-    /// <summary>
-    /// A simple bit array implementation backed by a <see cref="Memory{T}"/>.
-    /// </summary>
-    public class BitArray
-    {
-        /// <summary>
-        /// The backing storage of the <see cref="BitArray"/>.
-        /// </summary>
-        private Memory<byte> _storage;
-
-        /// <summary>
-        /// Create a new <see cref="BitArray"/> from <see cref="Memory{T}"/>.
-        /// </summary>
-        /// <param name="storage">The backing storage of the <see cref="BitArray"/>.</param>
-        public BitArray(Memory<byte> storage)
-        {
-            _storage = storage;
-        }
-
-        /// <summary>
-        /// Get the byte position of a given bit index.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        /// <returns>The byte position of a given bit index.</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static int ToPosition(int index) => index / 8;
-
-        /// <summary>
-        /// Get the bit position of a given bit index inside a byte.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        /// <returns>The bit position of a given bit index inside a byte.</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static int ToBitPosition(int index) => index % 8;
-
-        /// <summary>
-        /// Test if the bit at the given index is set.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        /// <returns>Return true if the bit at the given index is set</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool Test(int index)
-        {
-            ulong mask = 1ul << ToBitPosition(index);
-
-            return (_storage.Span[ToPosition(index)] & mask) == mask;
-        }
-
-        /// <summary>
-        /// Set the bit at the given index.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void Set(int index)
-        {
-            Set(index, true);
-        }
-
-        /// <summary>
-        /// Reset the bit at the given index.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void Reset(int index)
-        {
-            Set(index, false);
-        }
-
-        /// <summary>
-        /// Set a bit value at the given index.
-        /// </summary>
-        /// <param name="index">A bit index.</param>
-        /// <param name="value">The new bit value.</param>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void Set(int index, bool value)
-        {
-            byte mask = (byte)(1 << ToBitPosition(index));
-
-            if (value)
-            {
-                _storage.Span[ToPosition(index)] |= mask;
-            }
-            else
-            {
-                _storage.Span[ToPosition(index)] &= (byte)~mask;
-            }
-        }
-
-        /// <summary>
-        /// Reset all bits in the storage.
-        /// </summary>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void Reset()
-        {
-            _storage.Span.Fill(0);
-        }
-    }
-}
-- 
cgit v1.2.3