Ryujinx-git/Ryujinx.HLE/HOS/Services/Vi/GbpBuffer.cs

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C#
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using Ryujinx.Common;
using System;
using System.IO;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE.HOS.Services.Android
{
[StructLayout(LayoutKind.Sequential, Size = 0x28)]
struct GraphicBufferHeader
{
public int Magic;
public int Width;
public int Height;
public int Stride;
public int Format;
public int Usage;
public int Pid;
public int RefCount;
public int FdsCount;
public int IntsCount;
}
[StructLayout(LayoutKind.Explicit, Size = 0x58)]
struct NvGraphicBufferSurface
{
[FieldOffset(0)]
public uint Width;
[FieldOffset(0x4)]
public uint Height;
[FieldOffset(0x8)]
public ColorFormat ColorFormat;
[FieldOffset(0x10)]
public int Layout;
[FieldOffset(0x14)]
public int Pitch;
[FieldOffset(0x18)]
public int NvMapHandle;
[FieldOffset(0x1C)]
public int Offset;
[FieldOffset(0x20)]
public int Kind;
[FieldOffset(0x24)]
public int BlockHeightLog2;
[FieldOffset(0x28)]
public int ScanFormat;
[FieldOffset(0x30)]
public long Flags;
[FieldOffset(0x38)]
public long Size;
}
[StructLayout(LayoutKind.Explicit)]
struct NvGraphicBufferSurfaceArray
{
[FieldOffset(0x0)]
private NvGraphicBufferSurface Surface0;
[FieldOffset(0x58)]
private NvGraphicBufferSurface Surface1;
[FieldOffset(0xb0)]
private NvGraphicBufferSurface Surface2;
public NvGraphicBufferSurface this[int index]
{
get
{
if (index == 0)
{
return Surface0;
}
else if (index == 1)
{
return Surface1;
}
else if (index == 2)
{
return Surface2;
}
throw new IndexOutOfRangeException();
}
}
}
[StructLayout(LayoutKind.Explicit, Size = 0x144)]
struct NvGraphicBuffer
{
[FieldOffset(0x4)]
public int NvMapId;
[FieldOffset(0xC)]
public int Magic;
[FieldOffset(0x10)]
public int Pid;
[FieldOffset(0x14)]
public int Type;
[FieldOffset(0x18)]
public int Usage;
[FieldOffset(0x1C)]
public int PixelFormat;
[FieldOffset(0x20)]
public int ExternalPixelFormat;
[FieldOffset(0x24)]
public int Stride;
[FieldOffset(0x28)]
public int FrameBufferSize;
[FieldOffset(0x2C)]
public int PlanesCount;
[FieldOffset(0x34)]
public NvGraphicBufferSurfaceArray Surfaces;
}
struct GbpBuffer
{
public GraphicBufferHeader Header { get; private set; }
public NvGraphicBuffer Buffer { get; private set; }
public int Size => Marshal.SizeOf<NvGraphicBuffer>() + Marshal.SizeOf<GraphicBufferHeader>();
public GbpBuffer(BinaryReader reader)
{
Header = reader.ReadStruct<GraphicBufferHeader>();
// ignore fds
// TODO: check if that is used in official implementation
reader.BaseStream.Position += Header.FdsCount * 4;
if (Header.IntsCount != 0x51)
{
throw new NotImplementedException($"Unexpected Graphic Buffer ints count (expected 0x51, found 0x{Header.IntsCount:x}");
}
Buffer = reader.ReadStruct<NvGraphicBuffer>();
}
public void Write(BinaryWriter writer)
{
writer.WriteStruct(Header);
writer.WriteStruct(Buffer);
}
}
}