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https://github.com/Ryujinx/Ryujinx.git
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ddb8351375
Based off of my RE of 12.0.2 audio services, the newly added parameter can be safely ignored due to ryu not using fixed-size I/O buffers.
97 lines
No EOL
3.6 KiB
C#
97 lines
No EOL
3.6 KiB
C#
using Ryujinx.Common;
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using Ryujinx.HLE.HOS.Services.Audio.HardwareOpusDecoderManager;
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using Ryujinx.HLE.HOS.Services.Audio.Types;
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namespace Ryujinx.HLE.HOS.Services.Audio
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{
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[Service("hwopus")]
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class IHardwareOpusDecoderManager : IpcService
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{
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public IHardwareOpusDecoderManager(ServiceCtx context) { }
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[CommandHipc(0)]
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// Initialize(bytes<8, 4>, u32, handle<copy>) -> object<nn::codec::detail::IHardwareOpusDecoder>
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public ResultCode Initialize(ServiceCtx context)
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{
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int sampleRate = context.RequestData.ReadInt32();
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int channelsCount = context.RequestData.ReadInt32();
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MakeObject(context, new IHardwareOpusDecoder(sampleRate, channelsCount));
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// Close transfer memory immediately as we don't use it.
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context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
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return ResultCode.Success;
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}
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[CommandHipc(1)]
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// GetWorkBufferSize(bytes<8, 4>) -> u32
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public ResultCode GetWorkBufferSize(ServiceCtx context)
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{
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// NOTE: The sample rate is ignored because it is fixed to 48KHz.
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int sampleRate = context.RequestData.ReadInt32();
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int channelsCount = context.RequestData.ReadInt32();
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context.ResponseData.Write(GetOpusDecoderSize(channelsCount));
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return ResultCode.Success;
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}
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[CommandHipc(4)] // 12.0.0+
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// InitializeEx(OpusParametersEx, u32, handle<copy>) -> object<nn::codec::detail::IHardwareOpusDecoder>
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public ResultCode InitializeEx(ServiceCtx context)
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{
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OpusParametersEx parameters = context.RequestData.ReadStruct<OpusParametersEx>();
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// UseLargeFrameSize can be ignored due to not relying on fixed size buffers for storing the decoded result.
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MakeObject(context, new IHardwareOpusDecoder(parameters.SampleRate, parameters.ChannelCount));
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// Close transfer memory immediately as we don't use it.
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context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
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return ResultCode.Success;
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}
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[CommandHipc(5)] // 12.0.0+
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// GetWorkBufferSizeEx(OpusParametersEx) -> u32
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public ResultCode GetWorkBufferSizeEx(ServiceCtx context)
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{
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OpusParametersEx parameters = context.RequestData.ReadStruct<OpusParametersEx>();
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// NOTE: The sample rate is ignored because it is fixed to 48KHz.
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context.ResponseData.Write(GetOpusDecoderSize(parameters.ChannelCount));
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return ResultCode.Success;
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}
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private static int GetOpusDecoderSize(int channelsCount)
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{
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const int silkDecoderSize = 0x2198;
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if (channelsCount < 1 || channelsCount > 2)
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{
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return 0;
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}
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int celtDecoderSize = GetCeltDecoderSize(channelsCount);
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int opusDecoderSize = (channelsCount * 0x800 + 0x4807) & -0x800 | 0x50;
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return opusDecoderSize + silkDecoderSize + celtDecoderSize;
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}
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private static int GetCeltDecoderSize(int channelsCount)
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{
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const int decodeBufferSize = 0x2030;
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const int celtDecoderSize = 0x58;
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const int celtSigSize = 0x4;
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const int overlap = 120;
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const int eBandsCount = 21;
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return (decodeBufferSize + overlap * 4) * channelsCount +
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eBandsCount * 16 +
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celtDecoderSize +
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celtSigSize;
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}
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}
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} |