mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 15:48:43 +02:00
81 lines
2.8 KiB
C#
81 lines
2.8 KiB
C#
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using Ryujinx.Common.Memory;
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using Ryujinx.Graphics.Video;
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using System;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Graphics.Nvdec.Vp9.Types
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{
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internal struct Surface : ISurface
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{
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public ArrayPtr<byte> YBuffer;
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public ArrayPtr<byte> UBuffer;
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public ArrayPtr<byte> VBuffer;
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public unsafe Plane YPlane => new Plane((IntPtr)YBuffer.ToPointer(), YBuffer.Length);
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public unsafe Plane UPlane => new Plane((IntPtr)UBuffer.ToPointer(), UBuffer.Length);
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public unsafe Plane VPlane => new Plane((IntPtr)VBuffer.ToPointer(), VBuffer.Length);
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public int Width { get; }
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public int Height { get; }
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public int AlignedWidth { get; }
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public int AlignedHeight { get; }
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public int Stride { get; }
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public int UvWidth { get; }
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public int UvHeight { get; }
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public int UvAlignedWidth { get; }
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public int UvAlignedHeight { get; }
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public int UvStride { get; }
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public bool HighBd => false;
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private readonly IntPtr _pointer;
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public Surface(int width, int height)
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{
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const int border = 32;
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const int ssX = 1;
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const int ssY = 1;
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const bool highbd = false;
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int alignedWidth = (width + 7) & ~7;
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int alignedHeight = (height + 7) & ~7;
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int yStride = ((alignedWidth + 2 * border) + 31) & ~31;
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int yplaneSize = (alignedHeight + 2 * border) * yStride;
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int uvWidth = alignedWidth >> ssX;
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int uvHeight = alignedHeight >> ssY;
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int uvStride = yStride >> ssX;
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int uvBorderW = border >> ssX;
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int uvBorderH = border >> ssY;
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int uvplaneSize = (uvHeight + 2 * uvBorderH) * uvStride;
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int frameSize = (highbd ? 2 : 1) * (yplaneSize + 2 * uvplaneSize);
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IntPtr pointer = Marshal.AllocHGlobal(frameSize);
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_pointer = pointer;
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Width = width;
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Height = height;
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AlignedWidth = alignedWidth;
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AlignedHeight = alignedHeight;
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Stride = yStride;
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UvWidth = (width + ssX) >> ssX;
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UvHeight = (height + ssY) >> ssY;
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UvAlignedWidth = uvWidth;
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UvAlignedHeight = uvHeight;
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UvStride = uvStride;
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ArrayPtr<byte> NewPlane(int start, int size, int border)
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{
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return new ArrayPtr<byte>(pointer + start + border, size - border);
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}
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YBuffer = NewPlane(0, yplaneSize, (border * yStride) + border);
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UBuffer = NewPlane(yplaneSize, uvplaneSize, (uvBorderH * uvStride) + uvBorderW);
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VBuffer = NewPlane(yplaneSize + uvplaneSize, uvplaneSize, (uvBorderH * uvStride) + uvBorderW);
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}
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public void Dispose()
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{
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Marshal.FreeHGlobal(_pointer);
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}
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}
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}
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