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, 95 deletions

diff --git a/Ryujinx.Audio.Renderer/Dsp/PcmHelper.cs b/Ryujinx.Audio.Renderer/Dsp/PcmHelper.cs
deleted file mode 100644
index 12c1d475..00000000
--- a/Ryujinx.Audio.Renderer/Dsp/PcmHelper.cs
+++ /dev/null
@@ -1,95 +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.Dsp
-{
-    public static class PcmHelper
-    {
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static int GetCountToDecode(int startSampleOffset, int endSampleOffset, int offset, int count)
-        {
-            return Math.Min(count, endSampleOffset - startSampleOffset - offset);
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static ulong GetBufferOffset<T>(int startSampleOffset, int offset, int channelCount) where T : unmanaged
-        {
-            return (ulong)(Unsafe.SizeOf<T>() * channelCount * (startSampleOffset + offset));
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static int GetBufferSize<T>(int startSampleOffset, int endSampleOffset, int offset, int count) where T : unmanaged
-        {
-            return GetCountToDecode(startSampleOffset, endSampleOffset, offset, count) * Unsafe.SizeOf<T>();
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static int Decode(Span<short> output, ReadOnlySpan<short> input, int startSampleOffset, int endSampleOffset, int channelIndex, int channelCount)
-        {
-            if (input.IsEmpty || endSampleOffset < startSampleOffset)
-            {
-                return 0;
-            }
-
-            int decodedCount = input.Length / channelCount;
-
-            for (int i = 0; i < decodedCount; i++)
-            {
-                output[i] = input[i * channelCount + channelIndex];
-            }
-
-            return decodedCount;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static int Decode(Span<short> output, ReadOnlySpan<float> input, int startSampleOffset, int endSampleOffset, int channelIndex, int channelCount)
-        {
-            if (input.IsEmpty || endSampleOffset < startSampleOffset)
-            {
-                return 0;
-            }
-
-            int decodedCount = input.Length / channelCount;
-
-            for (int i = 0; i < decodedCount; i++)
-            {
-                output[i] = (short)(input[i * channelCount + channelIndex] * short.MaxValue);
-            }
-
-            return decodedCount;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static short Saturate(float value)
-        {
-            if (value > short.MaxValue)
-            {
-                return short.MaxValue;
-            }
-
-            if (value < short.MinValue)
-            {
-                return short.MinValue;
-            }
-
-            return (short)value;
-        }
-    }
-}