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/FileHardwareDevice.cs | 105 +++++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 Ryujinx.Audio/Renderer/Utils/FileHardwareDevice.cs
(limited to 'Ryujinx.Audio/Renderer/Utils/FileHardwareDevice.cs')
diff --git a/Ryujinx.Audio/Renderer/Utils/FileHardwareDevice.cs b/Ryujinx.Audio/Renderer/Utils/FileHardwareDevice.cs
new file mode 100644
index 00000000..2008bafc
--- /dev/null
+++ b/Ryujinx.Audio/Renderer/Utils/FileHardwareDevice.cs
@@ -0,0 +1,105 @@
+//
+// 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.Integration;
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Audio.Renderer.Utils
+{
+ /// <summary>
+ /// A <see cref="IHardwareDevice"/> that outputs to a wav file.
+ /// </summary>
+ public class FileHardwareDevice : IHardwareDevice
+ {
+ private FileStream _stream;
+ private uint _channelCount;
+ private uint _sampleRate;
+
+ private const int HeaderSize = 44;
+
+ public FileHardwareDevice(string path, uint channelCount, uint sampleRate)
+ {
+ _stream = File.OpenWrite(path);
+ _channelCount = channelCount;
+ _sampleRate = sampleRate;
+
+ _stream.Seek(HeaderSize, SeekOrigin.Begin);
+ }
+
+ private void UpdateHeader()
+ {
+ var writer = new BinaryWriter(_stream);
+
+ long currentPos = writer.Seek(0, SeekOrigin.Current);
+
+ writer.Seek(0, SeekOrigin.Begin);
+
+ writer.Write(Encoding.ASCII.GetBytes("RIFF"));
+ writer.Write((int)(writer.BaseStream.Length - 8));
+ writer.Write(Encoding.ASCII.GetBytes("WAVE"));
+ writer.Write(Encoding.ASCII.GetBytes("fmt "));
+ writer.Write(16);
+ writer.Write((short)1);
+ writer.Write((short)GetChannelCount());
+ writer.Write(GetSampleRate());
+ writer.Write(GetSampleRate() * GetChannelCount() * sizeof(short));
+ writer.Write((short)(GetChannelCount() * sizeof(short)));
+ writer.Write((short)(sizeof(short) * 8));
+ writer.Write(Encoding.ASCII.GetBytes("data"));
+ writer.Write((int)(writer.BaseStream.Length - HeaderSize));
+
+ writer.Seek((int)currentPos, SeekOrigin.Begin);
+ }
+
+ public void AppendBuffer(ReadOnlySpan<short> data, uint channelCount)
+ {
+ _stream.Write(MemoryMarshal.Cast<short, byte>(data));
+
+ UpdateHeader();
+ _stream.Flush();
+ }
+
+ public uint GetChannelCount()
+ {
+ return _channelCount;
+ }
+
+ public uint GetSampleRate()
+ {
+ return _sampleRate;
+ }
+
+ public void Dispose()
+ {
+ Dispose(true);
+ }
+
+ protected virtual void Dispose(bool disposing)
+ {
+ if (disposing)
+ {
+ _stream?.Flush();
+ _stream?.Dispose();
+
+ _stream = null;
+ }
+ }
+ }
+}
--
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