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162 lines
5.6 KiB
C#
162 lines
5.6 KiB
C#
using Ryujinx.Audio.Backends.Common;
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using Ryujinx.Audio.Common;
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using Ryujinx.Audio.Renderer.Dsp;
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using System;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Audio.Backends.CompatLayer
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{
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class CompatLayerHardwareDeviceSession : HardwareDeviceSessionOutputBase
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{
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private HardwareDeviceSessionOutputBase _realSession;
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private SampleFormat _userSampleFormat;
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private uint _userChannelCount;
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public CompatLayerHardwareDeviceSession(HardwareDeviceSessionOutputBase realSession, SampleFormat userSampleFormat, uint userChannelCount) : base(realSession.MemoryManager, realSession.RequestedSampleFormat, realSession.RequestedSampleRate, userChannelCount)
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{
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_realSession = realSession;
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_userSampleFormat = userSampleFormat;
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_userChannelCount = userChannelCount;
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}
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public override void Dispose()
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{
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_realSession.Dispose();
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}
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public override ulong GetPlayedSampleCount()
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{
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return _realSession.GetPlayedSampleCount();
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}
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public override float GetVolume()
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{
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return _realSession.GetVolume();
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}
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public override void PrepareToClose()
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{
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_realSession.PrepareToClose();
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}
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public override void QueueBuffer(AudioBuffer buffer)
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{
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SampleFormat realSampleFormat = _realSession.RequestedSampleFormat;
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if (_userSampleFormat != realSampleFormat)
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{
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if (_userSampleFormat != SampleFormat.PcmInt16)
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{
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throw new NotImplementedException("Converting formats other than PCM16 is not supported.");
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}
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int userSampleCount = buffer.Data.Length / BackendHelper.GetSampleSize(_userSampleFormat);
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ReadOnlySpan<short> samples = MemoryMarshal.Cast<byte, short>(buffer.Data);
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byte[] convertedSamples = new byte[BackendHelper.GetSampleSize(realSampleFormat) * userSampleCount];
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switch (realSampleFormat)
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{
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case SampleFormat.PcmInt8:
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PcmHelper.ConvertSampleToPcm8(MemoryMarshal.Cast<byte, sbyte>(convertedSamples), samples);
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break;
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case SampleFormat.PcmInt24:
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PcmHelper.ConvertSampleToPcm24(convertedSamples, samples);
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break;
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case SampleFormat.PcmInt32:
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PcmHelper.ConvertSampleToPcm32(MemoryMarshal.Cast<byte, int>(convertedSamples), samples);
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break;
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case SampleFormat.PcmFloat:
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PcmHelper.ConvertSampleToPcmFloat(MemoryMarshal.Cast<byte, float>(convertedSamples), samples);
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break;
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default:
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throw new NotImplementedException($"Sample format conversion from {_userSampleFormat} to {realSampleFormat} not implemented.");
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}
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buffer.Data = convertedSamples;
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}
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_realSession.QueueBuffer(buffer);
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}
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public override bool RegisterBuffer(AudioBuffer buffer, byte[] samples)
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{
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if (samples == null)
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{
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return false;
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}
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if (_userChannelCount != _realSession.RequestedChannelCount)
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{
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if (_userSampleFormat != SampleFormat.PcmInt16)
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{
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throw new NotImplementedException("Downmixing formats other than PCM16 is not supported.");
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}
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ReadOnlySpan<short> samplesPCM16 = MemoryMarshal.Cast<byte, short>(samples);
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if (_userChannelCount == 6)
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{
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samplesPCM16 = Downmixing.DownMixSurroundToStereo(samplesPCM16);
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if (_realSession.RequestedChannelCount == 1)
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{
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samplesPCM16 = Downmixing.DownMixStereoToMono(samplesPCM16);
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}
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}
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else if (_userChannelCount == 2 && _realSession.RequestedChannelCount == 1)
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{
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samplesPCM16 = Downmixing.DownMixStereoToMono(samplesPCM16);
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}
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else
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{
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throw new NotImplementedException($"Downmixing from {_userChannelCount} to {_realSession.RequestedChannelCount} not implemented.");
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}
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samples = MemoryMarshal.Cast<short, byte>(samplesPCM16).ToArray();
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}
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AudioBuffer fakeBuffer = new AudioBuffer
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{
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BufferTag = buffer.BufferTag,
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DataPointer = buffer.DataPointer,
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DataSize = (ulong)samples.Length
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};
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bool result = _realSession.RegisterBuffer(fakeBuffer, samples);
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if (result)
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{
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buffer.Data = fakeBuffer.Data;
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buffer.DataSize = fakeBuffer.DataSize;
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}
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return result;
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}
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public override void SetVolume(float volume)
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{
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_realSession.SetVolume(volume);
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}
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public override void Start()
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{
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_realSession.Start();
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}
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public override void Stop()
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{
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_realSession.Stop();
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}
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public override void UnregisterBuffer(AudioBuffer buffer)
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{
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_realSession.UnregisterBuffer(buffer);
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}
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public override bool WasBufferFullyConsumed(AudioBuffer buffer)
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{
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return _realSession.WasBufferFullyConsumed(buffer);
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}
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}
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} |