b2b736abc2
* Fix typos * Remove unneeded using statements * Enforce var style more * Remove redundant qualifiers * Fix some indentation * Disable naming warnings on files with external enum names * Fix build * Mass find & replace for comments with no spacing * Standardize todo capitalization and for/if spacing
72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
using Ryujinx.HLE.HOS.Ipc;
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using System.Collections.Generic;
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namespace Ryujinx.HLE.HOS.Services.Aud
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{
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class IHardwareOpusDecoderManager : IpcService
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{
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private Dictionary<int, ServiceProcessRequest> _commands;
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public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
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public IHardwareOpusDecoderManager()
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{
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_commands = new Dictionary<int, ServiceProcessRequest>
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{
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{ 0, Initialize },
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{ 1, GetWorkBufferSize }
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};
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}
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public long 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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return 0;
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}
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public long 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 0;
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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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}
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