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using Ryujinx.HLE.HOS.Ipc;
using System;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Services.Am
{
class IStorageAccessor : IpcService
{
private Dictionary<int, ServiceProcessRequest> _commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
private IStorage _storage;
public IStorageAccessor(IStorage storage)
{
_commands = new Dictionary<int, ServiceProcessRequest>
{
{ 0, GetSize },
{ 10, Write },
{ 11, Read }
};
_storage = storage;
}
public long GetSize(ServiceCtx context)
{
context.ResponseData.Write((long)_storage.Data.Length);
return 0;
}
public long Write(ServiceCtx context)
{
//TODO: Error conditions.
long writePosition = context.RequestData.ReadInt64();
(long position, long size) = context.Request.GetBufferType0x21();
if (size > 0)
{
long maxSize = _storage.Data.Length - writePosition;
if (size > maxSize)
{
size = maxSize;
}
byte[] data = context.Memory.ReadBytes(position, size);
Buffer.BlockCopy(data, 0, _storage.Data, (int)writePosition, (int)size);
}
return 0;
}
public long Read(ServiceCtx context)
{
//TODO: Error conditions.
long readPosition = context.RequestData.ReadInt64();
(long position, long size) = context.Request.GetBufferType0x22();
byte[] data;
if (_storage.Data.Length > size)
{
data = new byte[size];
Buffer.BlockCopy(_storage.Data, 0, data, 0, (int)size);
}
else
{
data = _storage.Data;
}
context.Memory.WriteBytes(position, data);
return 0;
}
}
}
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