Ryujinx/Ryujinx.HLE/HOS/Services/Audio/IAudioInManager.cs

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using Ryujinx.Cpu;
using Ryujinx.Memory;
using System;
using System.Text;
namespace Ryujinx.HLE.HOS.Services.Audio
{
[Service("audin:u")]
class IAudioInManager : IpcService
{
private const string DefaultAudioInsName = "BuiltInHeadset";
public IAudioInManager(ServiceCtx context) { }
[Command(0)]
// ListAudioIns() -> (u32 count, buffer<bytes, 6> names)
public ResultCode ListAudioIns(ServiceCtx context)
{
long bufferPosition = context.Request.ReceiveBuff[0].Position;
long bufferSize = context.Request.ReceiveBuff[0].Size;
// NOTE: The service check if AudioInManager thread is started, if not it starts it.
uint count = ListAudioInsImpl(context.Memory, bufferPosition, bufferSize, false);
context.ResponseData.Write(count);
return ResultCode.Success;
}
[Command(2)] // 3.0.0+
// ListAudioInsAuto() -> (u32 count, buffer<bytes, 0x22> names)
public ResultCode ListAudioInsAuto(ServiceCtx context)
{
(long bufferPosition, long bufferSize) = context.Request.GetBufferType0x22();
// NOTE: The service check if AudioInManager thread is started, if not it starts it.
uint count = ListAudioInsImpl(context.Memory, bufferPosition, bufferSize, false);
context.ResponseData.Write(count);
return ResultCode.Success;
}
[Command(4)] // 3.0.0+
// ListAudioInsAutoFiltered() -> (u32 count, buffer<bytes, 0x22> names)
public ResultCode ListAudioInsAutoFiltered(ServiceCtx context)
{
(long bufferPosition, long bufferSize) = context.Request.GetBufferType0x22();
// NOTE: The service check if AudioInManager thread is started, if not it starts it.
uint count = ListAudioInsImpl(context.Memory, bufferPosition, bufferSize, true);
context.ResponseData.Write(count);
return ResultCode.Success;
}
private uint ListAudioInsImpl(IVirtualMemoryManager memory, long bufferPosition, long bufferSize, bool filtered = false)
{
uint count = 0;
MemoryHelper.FillWithZeros(memory, bufferPosition, (int)bufferSize);
if (bufferSize > 0)
{
// NOTE: The service also check that the input target is enabled when in filtering mode, as audctl and most of the audin logic isn't supported, we don't support it.
if (!filtered)
{
byte[] deviceNameBuffer = Encoding.ASCII.GetBytes(DefaultAudioInsName + "\0");
memory.Write((ulong)bufferPosition, deviceNameBuffer);
count++;
}
// NOTE: The service adds other input devices names available in the buffer,
// every name is aligned to 0x100 bytes.
// Since we don't support it for now, it's fine to do nothing here.
}
return count;
}
}
}