diff options
Diffstat (limited to 'Ryujinx.Audio.Renderer/Server/Splitter/SplitterDestination.cs')
| -rw-r--r-- | Ryujinx.Audio.Renderer/Server/Splitter/SplitterDestination.cs | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/Ryujinx.Audio.Renderer/Server/Splitter/SplitterDestination.cs b/Ryujinx.Audio.Renderer/Server/Splitter/SplitterDestination.cs new file mode 100644 index 00000000..5e07ba9d --- /dev/null +++ b/Ryujinx.Audio.Renderer/Server/Splitter/SplitterDestination.cs @@ -0,0 +1,210 @@ +// +// Copyright (c) 2019-2020 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.Parameter; +using Ryujinx.Common.Utilities; +using System; +using System.Diagnostics; +using System.Runtime.InteropServices; + +namespace Ryujinx.Audio.Renderer.Server.Splitter +{ + /// <summary> + /// Server state for a splitter destination. + /// </summary> + [StructLayout(LayoutKind.Sequential, Size = 0xE0, Pack = Alignment)] + public struct SplitterDestination + { + public const int Alignment = 0x10; + + /// <summary> + /// The unique id of this <see cref="SplitterDestination"/>. + /// </summary> + public int Id; + + /// <summary> + /// The mix to output the result of the splitter. + /// </summary> + public int DestinationId; + + /// <summary> + /// Mix buffer volumes storage. + /// </summary> + private MixArray _mix; + private MixArray _previousMix; + + /// <summary> + /// Pointer to the next linked element. + /// </summary> + private unsafe SplitterDestination* _next; + + /// <summary> + /// Set to true if in use. + /// </summary> + [MarshalAs(UnmanagedType.I1)] + public bool IsUsed; + + /// <summary> + /// Set to true if the internal state need to be updated. + /// </summary> + [MarshalAs(UnmanagedType.I1)] + public bool NeedToUpdateInternalState; + + [StructLayout(LayoutKind.Sequential, Size = 4 * RendererConstants.MixBufferCountMax, Pack = 1)] + private struct MixArray { } + + /// <summary> + /// Mix buffer volumes. + /// </summary> + /// <remarks>Used when a splitter id is specified in the mix.</remarks> + public Span<float> MixBufferVolume => SpanHelpers.AsSpan<MixArray, float>(ref _mix); + + /// <summary> + /// Previous mix buffer volumes. + /// </summary> + /// <remarks>Used when a splitter id is specified in the mix.</remarks> + public Span<float> PreviousMixBufferVolume => SpanHelpers.AsSpan<MixArray, float>(ref _previousMix); + + /// <summary> + /// Get the <see cref="Span{SplitterDestination}"/> of the next element or <see cref="Span{SplitterDestination}.Empty"/> if not present. + /// </summary> + public Span<SplitterDestination> Next + { + get + { + unsafe + { + return _next != null ? new Span<SplitterDestination>(_next, 1) : Span<SplitterDestination>.Empty; + } + } + } + + /// <summary> + /// Create a new <see cref="SplitterDestination"/>. + /// </summary> + /// <param name="id">The unique id of this <see cref="SplitterDestination"/>.</param> + public SplitterDestination(int id) : this() + { + Id = id; + DestinationId = RendererConstants.UnusedMixId; + + ClearVolumes(); + } + + /// <summary> + /// Update the <see cref="SplitterDestination"/> from user parameter. + /// </summary> + /// <param name="parameter">The user parameter.</param> + public void Update(SplitterDestinationInParameter parameter) + { + Debug.Assert(Id == parameter.Id); + + if (parameter.IsMagicValid() && Id == parameter.Id) + { + DestinationId = parameter.DestinationId; + + parameter.MixBufferVolume.CopyTo(MixBufferVolume); + + if (!IsUsed && parameter.IsUsed) + { + MixBufferVolume.CopyTo(PreviousMixBufferVolume); + + NeedToUpdateInternalState = false; + } + + IsUsed = parameter.IsUsed; + } + } + + /// <summary> + /// Update the internal state of the instance. + /// </summary> + public void UpdateInternalState() + { + if (IsUsed && NeedToUpdateInternalState) + { + MixBufferVolume.CopyTo(PreviousMixBufferVolume); + } + + NeedToUpdateInternalState = false; + } + + /// <summary> + /// Set the update internal state marker. + /// </summary> + public void MarkAsNeedToUpdateInternalState() + { + NeedToUpdateInternalState = true; + } + + /// <summary> + /// Return true if the <see cref="SplitterDestination"/> is used and has a destination. + /// </summary> + /// <returns>True if the <see cref="SplitterDestination"/> is used and has a destination.</returns> + public bool IsConfigured() + { + return IsUsed && DestinationId != RendererConstants.UnusedMixId; + } + + /// <summary> + /// Get the volume for a given destination. + /// </summary> + /// <param name="destinationIndex">The destination index to use.</param> + /// <returns>The volume for the given destination.</returns> + public float GetMixVolume(int destinationIndex) + { + Debug.Assert(destinationIndex >= 0 && destinationIndex < RendererConstants.MixBufferCountMax); + + return MixBufferVolume[destinationIndex]; + } + + /// <summary> + /// Clear the volumes. + /// </summary> + public void ClearVolumes() + { + MixBufferVolume.Fill(0); + PreviousMixBufferVolume.Fill(0); + } + + /// <summary> + /// Link the next element to the given <see cref="SplitterDestination"/>. + /// </summary> + /// <param name="next">The given <see cref="SplitterDestination"/> to link.</param> + public void Link(ref SplitterDestination next) + { + unsafe + { + fixed (SplitterDestination *nextPtr = &next) + { + _next = nextPtr; + } + } + } + + /// <summary> + /// Remove the link to the next element. + /// </summary> + public void Unlink() + { + unsafe + { + _next = null; + } + } + } +} |