private static unsafe void TMPredictor(byte *dst, int stride, int bs, byte *above, byte *left)
{
int r, c;
int yTopLeft = above[-1];
for (r = 0; r < bs; r++)
{
for (c = 0; c < bs; c++)
{
dst[c] = BitUtils.ClipPixel(left[r] + above[c] - yTopLeft);
}
dst += stride;
}
}
private static unsafe void ConvolveHoriz(
byte *src,
int srcStride,
byte *dst,
int dstStride,
Array8 <short>[] xFilters,
int x0Q4,
int xStepQ4,
int w,
int h)
{
if (Sse41.IsSupported && UseIntrinsics && xStepQ4 == 1 << SubpelBits)
{
ConvolveHorizSse41(src, srcStride, dst, dstStride, xFilters, x0Q4, w, h);
return;
}
int x, y;
src -= SubpelTaps / 2 - 1;
for (y = 0; y < h; ++y)
{
int xQ4 = x0Q4;
for (x = 0; x < w; ++x)
{
byte *srcX = &src[xQ4 >> SubpelBits];
ref Array8 <short> xFilter = ref xFilters[xQ4 & SubpelMask];
int k, sum = 0;
for (k = 0; k < SubpelTaps; ++k)
{
sum += srcX[k] * xFilter[k];
}
dst[x] = BitUtils.ClipPixel(BitUtils.RoundPowerOfTwo(sum, FilterBits));
xQ4 += xStepQ4;
}
src += srcStride;
dst += dstStride;
}