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using Ryujinx.Common.Memory;
using Ryujinx.Graphics.Video;
using System;
using System.Diagnostics;
namespace Ryujinx.Graphics.Nvdec.Vp9.Types
{
internal struct Mv
{
public short Row;
public short Col;
private static ReadOnlySpan<byte> LogInBase2 => new byte[]
{
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10,
};
public readonly bool UseMvHp()
{
const int KMvRefThresh = 64; // Threshold for use of high-precision 1/8 mv
return Math.Abs(Row) < KMvRefThresh && Math.Abs(Col) < KMvRefThresh;
}
public static bool MvJointVertical(MvJointType type)
{
return type == MvJointType.MvJointHzvnz || type == MvJointType.MvJointHnzvnz;
}
public static bool MvJointHorizontal(MvJointType type)
{
return type == MvJointType.MvJointHnzvz || type == MvJointType.MvJointHnzvnz;
}
private static int MvClassBase(MvClassType c)
{
return c != 0 ? Constants.Class0Size << ((int)c + 2) : 0;
}
private static MvClassType GetMvClass(int z, Ptr<int> offset)
{
MvClassType c = (z >= Constants.Class0Size * 4096) ? MvClassType.MvClass10 : (MvClassType)LogInBase2[z >> 3];
if (!offset.IsNull)
{
offset.Value = z - MvClassBase(c);
}
return c;
}
private static void IncMvComponent(int v, ref Vp9BackwardUpdates counts, int comp, int incr, int usehp)
{
int s, z, c, o = 0, d, e, f;
Debug.Assert(v != 0); /* Should not be zero */
s = v < 0 ? 1 : 0;
counts.Sign[comp][s] += (uint)incr;
z = (s != 0 ? -v : v) - 1; /* Magnitude - 1 */
c = (int)GetMvClass(z, new Ptr<int>(ref o));
counts.Classes[comp][c] += (uint)incr;
d = (o >> 3); /* Int mv data */
f = (o >> 1) & 3; /* Fractional pel mv data */
e = (o & 1); /* High precision mv data */
if (c == (int)MvClassType.MvClass0)
{
counts.Class0[comp][d] += (uint)incr;
counts.Class0Fp[comp][d][f] += (uint)incr;
counts.Class0Hp[comp][e] += (uint)(usehp * incr);
}
else
{
int i;
int b = c + Constants.Class0Bits - 1; // Number of bits
for (i = 0; i < b; ++i)
{
counts.Bits[comp][i][((d >> i) & 1)] += (uint)incr;
}
counts.Fp[comp][f] += (uint)incr;
counts.Hp[comp][e] += (uint)(usehp * incr);
}
}
private readonly MvJointType GetMvJoint()
{
if (Row == 0)
{
return Col == 0 ? MvJointType.MvJointZero : MvJointType.MvJointHnzvz;
}
return Col == 0 ? MvJointType.MvJointHzvnz : MvJointType.MvJointHnzvnz;
}
internal readonly void IncMv(Ptr<Vp9BackwardUpdates> counts)
{
if (!counts.IsNull)
{
MvJointType j = GetMvJoint();
++counts.Value.Joints[(int)j];
if (MvJointVertical(j))
{
IncMvComponent(Row, ref counts.Value, 0, 1, 1);
}
if (MvJointHorizontal(j))
{
IncMvComponent(Col, ref counts.Value, 1, 1, 1);
}
}
}
public void ClampMv(int minCol, int maxCol, int minRow, int maxRow)
{
Col = (short)Math.Clamp(Col, minCol, maxCol);
Row = (short)Math.Clamp(Row, minRow, maxRow);
}
private const int MvBorder = (16 << 3); // Allow 16 pels in 1/8th pel units
public void ClampMvRef(ref MacroBlockD xd)
{
ClampMv(
xd.MbToLeftEdge - MvBorder,
xd.MbToRightEdge + MvBorder,
xd.MbToTopEdge - MvBorder,
xd.MbToBottomEdge + MvBorder);
}
public void LowerMvPrecision(bool allowHP)
{
bool useHP = allowHP && UseMvHp();
if (!useHP)
{
if ((Row & 1) != 0)
{
Row += (short)(Row > 0 ? -1 : 1);
}
if ((Col & 1) != 0)
{
Col += (short)(Col > 0 ? -1 : 1);
}
}
}
}
}
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