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Ryujinx/Ryujinx.HLE/HOS/Services/Audio/IHardwareOpusDecoderManager.cs
Billy Laws ddb8351375
Implement 12.0.0 hwopus functions (#2410)
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.
2021-07-06 19:49:51 +02:00

97 lines
No EOL
3.6 KiB
C#

using Ryujinx.Common;
using Ryujinx.HLE.HOS.Services.Audio.HardwareOpusDecoderManager;
using Ryujinx.HLE.HOS.Services.Audio.Types;
namespace Ryujinx.HLE.HOS.Services.Audio
{
[Service("hwopus")]
class IHardwareOpusDecoderManager : IpcService
{
public IHardwareOpusDecoderManager(ServiceCtx context) { }
[CommandHipc(0)]
// Initialize(bytes<8, 4>, u32, handle<copy>) -> object<nn::codec::detail::IHardwareOpusDecoder>
public ResultCode Initialize(ServiceCtx context)
{
int sampleRate = context.RequestData.ReadInt32();
int channelsCount = context.RequestData.ReadInt32();
MakeObject(context, new IHardwareOpusDecoder(sampleRate, channelsCount));
// Close transfer memory immediately as we don't use it.
context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
return ResultCode.Success;
}
[CommandHipc(1)]
// GetWorkBufferSize(bytes<8, 4>) -> u32
public ResultCode GetWorkBufferSize(ServiceCtx context)
{
// NOTE: The sample rate is ignored because it is fixed to 48KHz.
int sampleRate = context.RequestData.ReadInt32();
int channelsCount = context.RequestData.ReadInt32();
context.ResponseData.Write(GetOpusDecoderSize(channelsCount));
return ResultCode.Success;
}
[CommandHipc(4)] // 12.0.0+
// InitializeEx(OpusParametersEx, u32, handle<copy>) -> object<nn::codec::detail::IHardwareOpusDecoder>
public ResultCode InitializeEx(ServiceCtx context)
{
OpusParametersEx parameters = context.RequestData.ReadStruct<OpusParametersEx>();
// UseLargeFrameSize can be ignored due to not relying on fixed size buffers for storing the decoded result.
MakeObject(context, new IHardwareOpusDecoder(parameters.SampleRate, parameters.ChannelCount));
// Close transfer memory immediately as we don't use it.
context.Device.System.KernelContext.Syscall.CloseHandle(context.Request.HandleDesc.ToCopy[0]);
return ResultCode.Success;
}
[CommandHipc(5)] // 12.0.0+
// GetWorkBufferSizeEx(OpusParametersEx) -> u32
public ResultCode GetWorkBufferSizeEx(ServiceCtx context)
{
OpusParametersEx parameters = context.RequestData.ReadStruct<OpusParametersEx>();
// NOTE: The sample rate is ignored because it is fixed to 48KHz.
context.ResponseData.Write(GetOpusDecoderSize(parameters.ChannelCount));
return ResultCode.Success;
}
private static int GetOpusDecoderSize(int channelsCount)
{
const int silkDecoderSize = 0x2198;
if (channelsCount < 1 || channelsCount > 2)
{
return 0;
}
int celtDecoderSize = GetCeltDecoderSize(channelsCount);
int opusDecoderSize = (channelsCount * 0x800 + 0x4807) & -0x800 | 0x50;
return opusDecoderSize + silkDecoderSize + celtDecoderSize;
}
private static int GetCeltDecoderSize(int channelsCount)
{
const int decodeBufferSize = 0x2030;
const int celtDecoderSize = 0x58;
const int celtSigSize = 0x4;
const int overlap = 120;
const int eBandsCount = 21;
return (decodeBufferSize + overlap * 4) * channelsCount +
eBandsCount * 16 +
celtDecoderSize +
celtSigSize;
}
}
}