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Diffstat (limited to 'Ryujinx.Audio.Renderer/RendererConstants.cs')
| -rw-r--r-- | Ryujinx.Audio.Renderer/RendererConstants.cs | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/Ryujinx.Audio.Renderer/RendererConstants.cs b/Ryujinx.Audio.Renderer/RendererConstants.cs new file mode 100644 index 00000000..32efebc8 --- /dev/null +++ b/Ryujinx.Audio.Renderer/RendererConstants.cs @@ -0,0 +1,167 @@ +// +// 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/>. +// + +namespace Ryujinx.Audio.Renderer +{ + /// <summary> + /// Define constants used by the Audio Renderer. + /// </summary> + public static class RendererConstants + { + /// <summary> + /// The maximum number of channels supported. (6 channels for 5.1 surround) + /// </summary> + public const int ChannelCountMax = 6; + + /// <summary> + /// The maximum number of channels supported per voice. + /// </summary> + public const int VoiceChannelCountMax = ChannelCountMax; + + /// <summary> + /// The max count of mix buffer supported per operations (volumes, mix effect, ...) + /// </summary> + public const int MixBufferCountMax = 24; + + /// <summary> + /// The max count of wavebuffer per voice. + /// </summary> + public const int VoiceWaveBufferCount = 4; + + /// <summary> + /// The max count of biquad filter per voice. + /// </summary> + public const int VoiceBiquadFilterCount = 2; + + /// <summary> + /// The lowest priority that a voice can have. + /// </summary> + public const int VoiceLowestPriority = 0xFF; + + /// <summary> + /// The highest priority that a voice can have. + /// </summary> + /// <remarks>Voices with the highest priority will not be dropped if a voice drop needs to occur.</remarks> + public const int VoiceHighestPriority = 0; + + /// <summary> + /// Max <see cref="Common.BehaviourParameter.ErrorInfo"/> that can be returned by <see cref="Parameter.BehaviourErrorInfoOutStatus"/>. + /// </summary> + public const int MaxErrorInfos = 10; + + /// <summary> + /// Default alignment for buffers. + /// </summary> + public const int BufferAlignment = 0x40; + + /// <summary> + /// Alignment required for the work buffer. + /// </summary> + public const int WorkBufferAlignment = 0x1000; + + /// <summary> + /// Alignment required for every performance metrics frame. + /// </summary> + public const int PerformanceMetricsPerFramesSizeAlignment = 0x100; + + /// <summary> + /// The id of the final mix. + /// </summary> + public const int FinalMixId = 0; + + /// <summary> + /// The id defining an unused mix id. + /// </summary> + public const int UnusedMixId = int.MaxValue; + + /// <summary> + /// The id defining an unused splitter id as a signed integer. + /// </summary> + public const int UnusedSplitterIdInt = -1; + + /// <summary> + /// The id defining an unused splitter id. + /// </summary> + public const uint UnusedSplitterId = uint.MaxValue; + + /// <summary> + /// The id of invalid/unused node id. + /// </summary> + public const int InvalidNodeId = -268435456; + + /// <summary> + /// The indice considered invalid for processing order. + /// </summary> + public const int InvalidProcessingOrder = -1; + + /// <summary> + /// The max number of audio renderer sessions allowed to be created system wide. + /// </summary> + public const int AudioRendererSessionCountMax = 2; + + /// <summary> + /// The target sample rate of the audio renderer. (48kHz) + /// </summary> + public const uint TargetSampleRate = 48000; + + /// <summary> + /// The target sample size of the audio renderer. (PCM16) + /// </summary> + public const int TargetSampleSize = sizeof(ushort); + + /// <summary> + /// The target sample count per audio renderer update. + /// </summary> + public const int TargetSampleCount = 240; + + /// <summary> + /// The size of an upsampler entry to process upsampling to <see cref="TargetSampleRate"/>. + /// </summary> + public const int UpSampleEntrySize = TargetSampleCount * VoiceChannelCountMax; + + /// <summary> + /// The target audio latency computed from <see cref="TargetSampleRate"/> and <see cref="TargetSampleCount"/>. + /// </summary> + public const int AudioProcessorMaxUpdateTimeTarget = 1000000000 / ((int)TargetSampleRate / TargetSampleCount); // 5.00 ms + + /// <summary> + /// The max update time of the DSP on original hardware. + /// </summary> + public const int AudioProcessorMaxUpdateTime = 5760000; // 5.76 ms + + /// <summary> + /// The max update time per audio renderer session. + /// </summary> + public const int AudioProcessorMaxUpdateTimePerSessions = AudioProcessorMaxUpdateTime / AudioRendererSessionCountMax; + + /// <summary> + /// Guest timer frequency used for system ticks. + /// </summary> + public const int TargetTimerFrequency = 19200000; + + /// <summary> + /// The default coefficients used for standard 5.1 surround to stereo downmixing. + /// </summary> + public static float[] DefaultSurroundToStereoCoefficients = new float[4] + { + 1.0f, + 0.707f, + 0.251f, + 0.707f, + }; + } +} |