private static unsafe void BuildIntraPredictorsHigh(
ref MacroBlockD xd,
byte *ref8,
int refStride,
byte *dst8,
int dstStride,
PredictionMode mode,
TxSize txSize,
int upAvailable,
int leftAvailable,
int rightAvailable,
int x,
int y,
int plane)
{
int i;
ushort *dst = (ushort *)dst8;
ushort *refr = (ushort *)ref8;
ushort *leftCol = stackalloc ushort[32];
ushort *aboveData = stackalloc ushort[64 + 16];
ushort *aboveRow = aboveData + 16;
ushort *constAboveRow = aboveRow;
int bs = 4 << (int)txSize;
int frameWidth, frameHeight;
int x0, y0;
ref MacroBlockDPlane pd = ref xd.Plane[plane];
private static int DecodeCoefs(
ref MacroBlockD xd,
PlaneType type,
Span <int> dqcoeff,
TxSize txSize,
ref Array2 <short> dq,
int ctx,
ReadOnlySpan <short> scan,
ReadOnlySpan <short> nb,
ref Reader r)
{
ref Vp9BackwardUpdates counts = ref xd.Counts.Value;
private static Span <uint> GetTxCounts(ref Vp9BackwardUpdates counts, TxSize maxTxSize, int ctx)
{
switch (maxTxSize)
{
case TxSize.Tx8x8: return(counts.Tx8x8[ctx].ToSpan());
case TxSize.Tx16x16: return(counts.Tx16x16[ctx].ToSpan());
case TxSize.Tx32x32: return(counts.Tx32x32[ctx].ToSpan());
default: Debug.Assert(false, "Invalid maxTxSize."); return(Span <uint> .Empty);
}
}
private static ReadOnlySpan <byte> GetTxProbs(ref Vp9EntropyProbs fc, TxSize maxTxSize, int ctx)
{
switch (maxTxSize)
{
case TxSize.Tx8x8: return(fc.Tx8x8Prob[ctx].ToSpan());
case TxSize.Tx16x16: return(fc.Tx16x16Prob[ctx].ToSpan());
case TxSize.Tx32x32: return(fc.Tx32x32Prob[ctx].ToSpan());
default: Debug.Assert(false, "Invalid maxTxSize."); return(ReadOnlySpan <byte> .Empty);
}
}
private static TxSize ReadTxSize(ref Vp9Common cm, ref MacroBlockD xd, bool allowSelect, ref Reader r)
{
TxMode txMode = cm.TxMode;
BlockSize bsize = xd.Mi[0].Value.SbType;
TxSize maxTxSize = Luts.MaxTxSizeLookup[(int)bsize];
if (allowSelect && txMode == TxMode.TxModeSelect && bsize >= BlockSize.Block8x8)
{
return(ReadSelectedTxSize(ref cm, ref xd, maxTxSize, ref r));
}
else
{
return((TxSize)Math.Min((int)maxTxSize, (int)Luts.TxModeToBiggestTxSize[(int)txMode]));
}
}
private static TxSize ReadSelectedTxSize(ref Vp9Common cm, ref MacroBlockD xd, TxSize maxTxSize, ref Reader r)
{
int ctx = xd.GetTxSizeContext();
ReadOnlySpan <byte> txProbs = GetTxProbs(ref cm.Fc.Value, maxTxSize, ctx);
TxSize txSize = (TxSize)r.Read(txProbs[0]);
if (txSize != TxSize.Tx4x4 && maxTxSize >= TxSize.Tx16x16)
{
txSize += r.Read(txProbs[1]);
if (txSize != TxSize.Tx8x8 && maxTxSize >= TxSize.Tx32x32)
{
txSize += r.Read(txProbs[2]);
}
}
if (!xd.Counts.IsNull)
{
++GetTxCounts(ref xd.Counts.Value, maxTxSize, ctx)[(int)txSize];
}
return(txSize);
}
private static void InverseTransformBlockInter(ref MacroBlockD xd, int plane, TxSize txSize, Span <byte> dst, int stride, int eob)
{
ref MacroBlockDPlane pd = ref xd.Plane[plane];