public static Mv AverageSplitMvs(ref MacroBlockDPlane pd, ref ModeInfo mi, int refr, int block)
{
int ssIdx = ((pd.SubsamplingX > 0 ? 1 : 0) << 1) | (pd.SubsamplingY > 0 ? 1 : 0);
Mv res = new Mv();
switch (ssIdx)
{
case 0: res = mi.Bmi[block].Mv[refr]; break;
case 1: res = MiMvPredQ2(ref mi, refr, block, block + 2); break;
case 2: res = MiMvPredQ2(ref mi, refr, block, block + 1); break;
case 3: res = MiMvPredQ4(ref mi, refr); break;
default: Debug.Assert(ssIdx <= 3 && ssIdx >= 0); break;
}
return(res);
}
public static void SetupDstPlanes(
ref Array3 <MacroBlockDPlane> planes,
ref Surface src,
int miRow,
int miCol)
{
Span <ArrayPtr <byte> > buffers = stackalloc ArrayPtr <byte> [Constants.MaxMbPlane];
buffers[0] = src.YBuffer;
buffers[1] = src.UBuffer;
buffers[2] = src.VBuffer;
Span <int> strides = stackalloc int[Constants.MaxMbPlane];
strides[0] = src.Stride;
strides[1] = src.UvStride;
strides[2] = src.UvStride;
int i;
for (i = 0; i < Constants.MaxMbPlane; ++i)
{
ref MacroBlockDPlane pd = ref planes[i];
SetupPredPlanes(ref pd.Dst, buffers[i], strides[i], miRow, miCol, Ptr <ScaleFactors> .Null, pd.SubsamplingX, pd.SubsamplingY);
}
