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using ChocolArm64.Memory;
using Ryujinx.Core.OsHle.Handles;
using Ryujinx.Core.OsHle.Ipc;
using Ryujinx.Core.OsHle.Utilities;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using static Ryujinx.Core.OsHle.Objects.Android.Parcel;
namespace Ryujinx.Core.OsHle.Objects.Vi
{
class IHOSBinderDriver : IIpcInterface
{
private delegate long ServiceProcessParcel(ServiceCtx Context, byte[] ParcelData);
private Dictionary<int, ServiceProcessRequest> m_Commands;
private Dictionary<(string, int), ServiceProcessParcel> m_Methods;
public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
private class BufferObj
{
}
private IdPoolWithObj BufferSlots;
private byte[] Gbfr;
public IHOSBinderDriver()
{
m_Commands = new Dictionary<int, ServiceProcessRequest>()
{
{ 0, TransactParcel },
{ 1, AdjustRefcount },
{ 2, GetNativeHandle }
};
m_Methods = new Dictionary<(string, int), ServiceProcessParcel>()
{
{ ("android.gui.IGraphicBufferProducer", 0x1), GraphicBufferProducerRequestBuffer },
{ ("android.gui.IGraphicBufferProducer", 0x3), GraphicBufferProducerDequeueBuffer },
{ ("android.gui.IGraphicBufferProducer", 0x7), GraphicBufferProducerQueueBuffer },
{ ("android.gui.IGraphicBufferProducer", 0x8), GraphicBufferProducerCancelBuffer },
{ ("android.gui.IGraphicBufferProducer", 0x9), GraphicBufferProducerQuery },
{ ("android.gui.IGraphicBufferProducer", 0xa), GraphicBufferProducerConnect },
{ ("android.gui.IGraphicBufferProducer", 0xe), GraphicBufferPreallocateBuffer }
};
BufferSlots = new IdPoolWithObj();
}
public long TransactParcel(ServiceCtx Context)
{
int Id = Context.RequestData.ReadInt32();
int Code = Context.RequestData.ReadInt32();
long DataPos = Context.Request.SendBuff[0].Position;
long DataSize = Context.Request.SendBuff[0].Size;
byte[] Data = AMemoryHelper.ReadBytes(Context.Memory, DataPos, (int)DataSize);
Data = GetParcelData(Data);
using (MemoryStream MS = new MemoryStream(Data))
{
BinaryReader Reader = new BinaryReader(MS);
MS.Seek(4, SeekOrigin.Current);
int StrSize = Reader.ReadInt32();
string InterfaceName = Encoding.Unicode.GetString(Data, 8, StrSize * 2);
if (m_Methods.TryGetValue((InterfaceName, Code), out ServiceProcessParcel ProcReq))
{
return ProcReq(Context, Data);
}
else
{
throw new NotImplementedException($"{InterfaceName} {Code}");
}
}
}
private long GraphicBufferProducerRequestBuffer(ServiceCtx Context, byte[] ParcelData)
{
int GbfrSize = Gbfr?.Length ?? 0;
byte[] Data = new byte[GbfrSize + 4];
if (Gbfr != null)
{
Buffer.BlockCopy(Gbfr, 0, Data, 0, GbfrSize);
}
return MakeReplyParcel(Context, Data);
}
private long GraphicBufferProducerDequeueBuffer(ServiceCtx Context, byte[] ParcelData)
{
//Note: It seems that the maximum number of slots is 64, because if we return
//a Slot number > 63, it seems to cause a buffer overrun and it reads garbage.
//Note 2: The size of each object associated with the slot is 0x30.
int Slot = BufferSlots.GenerateId(new BufferObj());
return MakeReplyParcel(Context, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
private long GraphicBufferProducerQueueBuffer(ServiceCtx Context, byte[] ParcelData)
{
return MakeReplyParcel(Context, 1280, 720, 0, 0, 0);
}
private long GraphicBufferProducerCancelBuffer(ServiceCtx Context, byte[] ParcelData)
{
using (MemoryStream MS = new MemoryStream(ParcelData))
{
BinaryReader Reader = new BinaryReader(MS);
MS.Seek(0x50, SeekOrigin.Begin);
int Slot = Reader.ReadInt32();
BufferSlots.Delete(Slot);
return MakeReplyParcel(Context, 0);
}
}
private long GraphicBufferProducerQuery(ServiceCtx Context, byte[] ParcelData)
{
return MakeReplyParcel(Context, 0, 0);
}
private long GraphicBufferProducerConnect(ServiceCtx Context, byte[] ParcelData)
{
return MakeReplyParcel(Context, 1280, 720, 0, 0, 0);
}
private long GraphicBufferPreallocateBuffer(ServiceCtx Context, byte[] ParcelData)
{
int GbfrSize = ParcelData.Length - 0x54;
Gbfr = new byte[GbfrSize];
Buffer.BlockCopy(ParcelData, 0x54, Gbfr, 0, GbfrSize);
using (MemoryStream MS = new MemoryStream(ParcelData))
{
BinaryReader Reader = new BinaryReader(MS);
MS.Seek(0xd4, SeekOrigin.Begin);
int Handle = Reader.ReadInt32();
HNvMap NvMap = Context.Ns.Os.Handles.GetData<HNvMap>(Handle);
Context.Ns.Gpu.Renderer.FrameBufferPtr = NvMap.Address;
}
return MakeReplyParcel(Context, 0);
}
private long MakeReplyParcel(ServiceCtx Context, params int[] Ints)
{
using (MemoryStream MS = new MemoryStream())
{
BinaryWriter Writer = new BinaryWriter(MS);
foreach (int Int in Ints)
{
Writer.Write(Int);
}
return MakeReplyParcel(Context, MS.ToArray());
}
}
private long MakeReplyParcel(ServiceCtx Context, byte[] Data)
{
long ReplyPos = Context.Request.ReceiveBuff[0].Position;
long ReplySize = Context.Request.ReceiveBuff[0].Position;
byte[] Reply = MakeParcel(Data, new byte[0]);
AMemoryHelper.WriteBytes(Context.Memory, ReplyPos, Reply);
return 0;
}
public long AdjustRefcount(ServiceCtx Context)
{
int Id = Context.RequestData.ReadInt32();
int AddVal = Context.RequestData.ReadInt32();
int Type = Context.RequestData.ReadInt32();
return 0;
}
public long GetNativeHandle(ServiceCtx Context)
{
int Id = Context.RequestData.ReadInt32();
uint Unk = Context.RequestData.ReadUInt32();
Context.Response.HandleDesc = IpcHandleDesc.MakeMove(0xbadcafe);
return 0;
}
}
}
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