mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-24 02:25:45 +00:00
944 lines
30 KiB
C#
944 lines
30 KiB
C#
using Ryujinx.Common.Memory;
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using Ryujinx.Graphics.Nvdec.Vp9.Common;
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using System.Diagnostics;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Runtime.Intrinsics;
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using System.Runtime.Intrinsics.X86;
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using static Ryujinx.Graphics.Nvdec.Vp9.Dsp.Filter;
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namespace Ryujinx.Graphics.Nvdec.Vp9.Dsp
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{
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internal static class Convolve
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{
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private const bool UseIntrinsics = true;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static Vector128<int> MultiplyAddAdjacent(
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Vector128<short> vsrc0,
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Vector128<short> vsrc1,
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Vector128<short> vsrc2,
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Vector128<short> vsrc3,
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Vector128<short> vfilter,
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Vector128<int> zero)
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{
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// < sumN, sumN, sumN, sumN >
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Vector128<int> sum0 = Sse2.MultiplyAddAdjacent(vsrc0, vfilter);
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Vector128<int> sum1 = Sse2.MultiplyAddAdjacent(vsrc1, vfilter);
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Vector128<int> sum2 = Sse2.MultiplyAddAdjacent(vsrc2, vfilter);
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Vector128<int> sum3 = Sse2.MultiplyAddAdjacent(vsrc3, vfilter);
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// < 0, 0, sumN, sumN >
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sum0 = Ssse3.HorizontalAdd(sum0, zero);
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sum1 = Ssse3.HorizontalAdd(sum1, zero);
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sum2 = Ssse3.HorizontalAdd(sum2, zero);
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sum3 = Ssse3.HorizontalAdd(sum3, zero);
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// < 0, 0, 0, sumN >
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sum0 = Ssse3.HorizontalAdd(sum0, zero);
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sum1 = Ssse3.HorizontalAdd(sum1, zero);
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sum2 = Ssse3.HorizontalAdd(sum2, zero);
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sum3 = Ssse3.HorizontalAdd(sum3, zero);
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// < 0, 0, sum1, sum0 >
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Vector128<int> sum01 = Sse2.UnpackLow(sum0, sum1);
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// < 0, 0, sum3, sum2 >
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Vector128<int> sum23 = Sse2.UnpackLow(sum2, sum3);
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// < sum3, sum2, sum1, sum0 >
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return Sse.MoveLowToHigh(sum01.AsSingle(), sum23.AsSingle()).AsInt32();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static Vector128<int> RoundShift(Vector128<int> value, Vector128<int> const64)
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{
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return Sse2.ShiftRightArithmetic(Sse2.Add(value, const64), FilterBits);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static Vector128<byte> PackUnsignedSaturate(Vector128<int> value, Vector128<int> zero)
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{
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return Sse2.PackUnsignedSaturate(Sse41.PackUnsignedSaturate(value, zero).AsInt16(), zero.AsInt16());
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static unsafe void ConvolveHorizSse41(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] xFilters,
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int x0Q4,
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int w,
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int h)
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{
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Vector128<int> zero = Vector128<int>.Zero;
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Vector128<int> const64 = Vector128.Create(64);
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ulong x, y;
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src -= SubpelTaps / 2 - 1;
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fixed (Array8<short>* xFilter = xFilters)
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{
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Vector128<short> vfilter = Sse2.LoadVector128((short*)xFilter + (uint)(x0Q4 & SubpelMask) * 8);
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for (y = 0; y < (uint)h; ++y)
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{
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ulong srcOffset = (uint)x0Q4 >> SubpelBits;
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for (x = 0; x < (uint)w; x += 4)
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{
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Vector128<short> vsrc0 = Sse41.ConvertToVector128Int16(&src[srcOffset + x]);
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Vector128<short> vsrc1 = Sse41.ConvertToVector128Int16(&src[srcOffset + x + 1]);
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Vector128<short> vsrc2 = Sse41.ConvertToVector128Int16(&src[srcOffset + x + 2]);
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Vector128<short> vsrc3 = Sse41.ConvertToVector128Int16(&src[srcOffset + x + 3]);
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Vector128<int> sum0123 = MultiplyAddAdjacent(vsrc0, vsrc1, vsrc2, vsrc3, vfilter, zero);
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Sse.StoreScalar((float*)&dst[x], PackUnsignedSaturate(RoundShift(sum0123, const64), zero).AsSingle());
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}
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src += srcStride;
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dst += dstStride;
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}
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static unsafe void ConvolveHoriz(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] xFilters,
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int x0Q4,
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int xStepQ4,
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int w,
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int h)
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{
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if (Sse41.IsSupported && UseIntrinsics && xStepQ4 == 1 << SubpelBits)
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{
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ConvolveHorizSse41(src, srcStride, dst, dstStride, xFilters, x0Q4, w, h);
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return;
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}
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int x, y;
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src -= SubpelTaps / 2 - 1;
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for (y = 0; y < h; ++y)
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{
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int xQ4 = x0Q4;
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for (x = 0; x < w; ++x)
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{
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byte* srcX = &src[xQ4 >> SubpelBits];
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ref Array8<short> xFilter = ref xFilters[xQ4 & SubpelMask];
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int k, sum = 0;
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for (k = 0; k < SubpelTaps; ++k)
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{
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sum += srcX[k] * xFilter[k];
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}
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dst[x] = BitUtils.ClipPixel(BitUtils.RoundPowerOfTwo(sum, FilterBits));
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xQ4 += xStepQ4;
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}
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src += srcStride;
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dst += dstStride;
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}
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}
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private static unsafe void ConvolveAvgHoriz(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] xFilters,
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int x0Q4,
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int xStepQ4,
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int w,
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int h)
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{
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int x, y;
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src -= SubpelTaps / 2 - 1;
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for (y = 0; y < h; ++y)
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{
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int xQ4 = x0Q4;
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for (x = 0; x < w; ++x)
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{
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byte* srcX = &src[xQ4 >> SubpelBits];
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ref Array8<short> xFilter = ref xFilters[xQ4 & SubpelMask];
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int k, sum = 0;
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for (k = 0; k < SubpelTaps; ++k)
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{
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sum += srcX[k] * xFilter[k];
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}
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dst[x] = (byte)BitUtils.RoundPowerOfTwo(dst[x] + BitUtils.ClipPixel(BitUtils.RoundPowerOfTwo(sum, FilterBits)), 1);
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xQ4 += xStepQ4;
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}
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src += srcStride;
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dst += dstStride;
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static unsafe void ConvolveVertAvx2(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] yFilters,
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int y0Q4,
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int w,
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int h)
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{
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Vector128<int> zero = Vector128<int>.Zero;
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Vector128<int> const64 = Vector128.Create(64);
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Vector256<int> indices = Vector256.Create(
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0,
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srcStride,
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srcStride * 2,
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srcStride * 3,
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srcStride * 4,
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srcStride * 5,
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srcStride * 6,
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srcStride * 7);
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ulong x, y;
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src -= srcStride * (SubpelTaps / 2 - 1);
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fixed (Array8<short>* yFilter = yFilters)
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{
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Vector128<short> vfilter = Sse2.LoadVector128((short*)yFilter + (uint)(y0Q4 & SubpelMask) * 8);
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ulong srcBaseY = (uint)y0Q4 >> SubpelBits;
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for (y = 0; y < (uint)h; ++y)
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{
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ulong srcOffset = (srcBaseY + y) * (uint)srcStride;
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for (x = 0; x < (uint)w; x += 4)
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{
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Vector256<int> vsrc = Avx2.GatherVector256((uint*)&src[srcOffset + x], indices, 1).AsInt32();
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Vector128<int> vsrcL = vsrc.GetLower();
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Vector128<int> vsrcH = vsrc.GetUpper();
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Vector128<byte> vsrcUnpck11 = Sse2.UnpackLow(vsrcL.AsByte(), vsrcH.AsByte());
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Vector128<byte> vsrcUnpck12 = Sse2.UnpackHigh(vsrcL.AsByte(), vsrcH.AsByte());
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Vector128<byte> vsrcUnpck21 = Sse2.UnpackLow(vsrcUnpck11, vsrcUnpck12);
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Vector128<byte> vsrcUnpck22 = Sse2.UnpackHigh(vsrcUnpck11, vsrcUnpck12);
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Vector128<byte> vsrc01 = Sse2.UnpackLow(vsrcUnpck21, vsrcUnpck22);
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Vector128<byte> vsrc23 = Sse2.UnpackHigh(vsrcUnpck21, vsrcUnpck22);
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Vector128<byte> vsrc11 = Sse.MoveHighToLow(vsrc01.AsSingle(), vsrc01.AsSingle()).AsByte();
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Vector128<byte> vsrc33 = Sse.MoveHighToLow(vsrc23.AsSingle(), vsrc23.AsSingle()).AsByte();
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Vector128<short> vsrc0 = Sse41.ConvertToVector128Int16(vsrc01);
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Vector128<short> vsrc1 = Sse41.ConvertToVector128Int16(vsrc11);
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Vector128<short> vsrc2 = Sse41.ConvertToVector128Int16(vsrc23);
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Vector128<short> vsrc3 = Sse41.ConvertToVector128Int16(vsrc33);
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Vector128<int> sum0123 = MultiplyAddAdjacent(vsrc0, vsrc1, vsrc2, vsrc3, vfilter, zero);
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Sse.StoreScalar((float*)&dst[x], PackUnsignedSaturate(RoundShift(sum0123, const64), zero).AsSingle());
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}
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dst += dstStride;
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}
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static unsafe void ConvolveVert(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] yFilters,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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if (Avx2.IsSupported && UseIntrinsics && yStepQ4 == 1 << SubpelBits)
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{
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ConvolveVertAvx2(src, srcStride, dst, dstStride, yFilters, y0Q4, w, h);
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return;
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}
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int x, y;
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src -= srcStride * (SubpelTaps / 2 - 1);
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for (x = 0; x < w; ++x)
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{
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int yQ4 = y0Q4;
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for (y = 0; y < h; ++y)
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{
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byte* srcY = &src[(yQ4 >> SubpelBits) * srcStride];
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ref Array8<short> yFilter = ref yFilters[yQ4 & SubpelMask];
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int k, sum = 0;
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for (k = 0; k < SubpelTaps; ++k)
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{
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sum += srcY[k * srcStride] * yFilter[k];
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}
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dst[y * dstStride] = BitUtils.ClipPixel(BitUtils.RoundPowerOfTwo(sum, FilterBits));
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yQ4 += yStepQ4;
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}
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++src;
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++dst;
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}
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}
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private static unsafe void ConvolveAvgVert(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] yFilters,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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int x, y;
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src -= srcStride * (SubpelTaps / 2 - 1);
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for (x = 0; x < w; ++x)
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{
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int yQ4 = y0Q4;
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for (y = 0; y < h; ++y)
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{
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byte* srcY = &src[(yQ4 >> SubpelBits) * srcStride];
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ref Array8<short> yFilter = ref yFilters[yQ4 & SubpelMask];
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int k, sum = 0;
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for (k = 0; k < SubpelTaps; ++k)
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{
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sum += srcY[k * srcStride] * yFilter[k];
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}
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dst[y * dstStride] = (byte)BitUtils.RoundPowerOfTwo(
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dst[y * dstStride] + BitUtils.ClipPixel(BitUtils.RoundPowerOfTwo(sum, FilterBits)), 1);
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yQ4 += yStepQ4;
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}
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++src;
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++dst;
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}
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}
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public static unsafe void Convolve8Horiz(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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ConvolveHoriz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, w, h);
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}
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public static unsafe void Convolve8AvgHoriz(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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ConvolveAvgHoriz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, w, h);
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}
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public static unsafe void Convolve8Vert(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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ConvolveVert(src, srcStride, dst, dstStride, filter, y0Q4, yStepQ4, w, h);
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}
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public static unsafe void Convolve8AvgVert(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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ConvolveAvgVert(src, srcStride, dst, dstStride, filter, y0Q4, yStepQ4, w, h);
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}
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[SkipLocalsInit]
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public static unsafe void Convolve8(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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// Note: Fixed size intermediate buffer, temp, places limits on parameters.
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// 2d filtering proceeds in 2 steps:
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// (1) Interpolate horizontally into an intermediate buffer, temp.
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// (2) Interpolate temp vertically to derive the sub-pixel result.
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// Deriving the maximum number of rows in the temp buffer (135):
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// --Smallest scaling factor is x1/2 ==> yStepQ4 = 32 (Normative).
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// --Largest block size is 64x64 pixels.
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// --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
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// original frame (in 1/16th pixel units).
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// --Must round-up because block may be located at sub-pixel position.
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// --Require an additional SubpelTaps rows for the 8-tap filter tails.
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// --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
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// When calling in frame scaling function, the smallest scaling factor is x1/4
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// ==> yStepQ4 = 64. Since w and h are at most 16, the temp buffer is still
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// big enough.
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byte* temp = stackalloc byte[64 * 135];
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int intermediateHeight = (((h - 1) * yStepQ4 + y0Q4) >> SubpelBits) + SubpelTaps;
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Debug.Assert(w <= 64);
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Debug.Assert(h <= 64);
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Debug.Assert(yStepQ4 <= 32 || (yStepQ4 <= 64 && h <= 32));
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Debug.Assert(xStepQ4 <= 64);
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ConvolveHoriz(src - srcStride * (SubpelTaps / 2 - 1), srcStride, temp, 64, filter, x0Q4, xStepQ4, w, intermediateHeight);
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ConvolveVert(temp + 64 * (SubpelTaps / 2 - 1), 64, dst, dstStride, filter, y0Q4, yStepQ4, w, h);
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}
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public static unsafe void Convolve8Avg(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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// Fixed size intermediate buffer places limits on parameters.
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byte* temp = stackalloc byte[64 * 64];
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Debug.Assert(w <= 64);
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Debug.Assert(h <= 64);
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Convolve8(src, srcStride, temp, 64, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
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ConvolveAvg(temp, 64, dst, dstStride, null, 0, 0, 0, 0, w, h);
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}
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public static unsafe void ConvolveCopy(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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int yStepQ4,
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int w,
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int h)
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{
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int r;
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for (r = h; r > 0; --r)
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{
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MemoryUtil.Copy(dst, src, w);
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src += srcStride;
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dst += dstStride;
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}
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}
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public static unsafe void ConvolveAvg(
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byte* src,
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int srcStride,
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byte* dst,
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int dstStride,
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Array8<short>[] filter,
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int x0Q4,
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int xStepQ4,
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int y0Q4,
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|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
dst[x] = (byte)BitUtils.RoundPowerOfTwo(dst[x] + src[x], 1);
|
|
}
|
|
|
|
src += srcStride;
|
|
dst += dstStride;
|
|
}
|
|
}
|
|
|
|
public static unsafe void ScaledHoriz(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8Horiz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
public static unsafe void ScaledVert(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8Vert(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
public static unsafe void Scaled2D(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
public static unsafe void ScaledAvgHoriz(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8AvgHoriz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
public static unsafe void ScaledAvgVert(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8AvgVert(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
public static unsafe void ScaledAvg2D(
|
|
byte* src,
|
|
int srcStride,
|
|
byte* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h)
|
|
{
|
|
Convolve8Avg(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h);
|
|
}
|
|
|
|
private static unsafe void HighbdConvolveHoriz(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] xFilters,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int x, y;
|
|
src -= SubpelTaps / 2 - 1;
|
|
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
int xQ4 = x0Q4;
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
ushort* 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.ClipPixelHighbd(BitUtils.RoundPowerOfTwo(sum, FilterBits), bd);
|
|
xQ4 += xStepQ4;
|
|
}
|
|
src += srcStride;
|
|
dst += dstStride;
|
|
}
|
|
}
|
|
|
|
private static unsafe void HighbdConvolveAvgHoriz(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] xFilters,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int x, y;
|
|
src -= SubpelTaps / 2 - 1;
|
|
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
int xQ4 = x0Q4;
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
ushort* 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] = (ushort)BitUtils.RoundPowerOfTwo(dst[x] + BitUtils.ClipPixelHighbd(BitUtils.RoundPowerOfTwo(sum, FilterBits), bd), 1);
|
|
xQ4 += xStepQ4;
|
|
}
|
|
src += srcStride;
|
|
dst += dstStride;
|
|
}
|
|
}
|
|
|
|
private static unsafe void HighbdConvolveVert(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] yFilters,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int x, y;
|
|
src -= srcStride * (SubpelTaps / 2 - 1);
|
|
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
int yQ4 = y0Q4;
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
ushort* srcY = &src[(yQ4 >> SubpelBits) * srcStride];
|
|
ref Array8<short> yFilter = ref yFilters[yQ4 & SubpelMask];
|
|
int k, sum = 0;
|
|
for (k = 0; k < SubpelTaps; ++k)
|
|
{
|
|
sum += srcY[k * srcStride] * yFilter[k];
|
|
}
|
|
|
|
dst[y * dstStride] = BitUtils.ClipPixelHighbd(BitUtils.RoundPowerOfTwo(sum, FilterBits), bd);
|
|
yQ4 += yStepQ4;
|
|
}
|
|
++src;
|
|
++dst;
|
|
}
|
|
}
|
|
|
|
private static unsafe void HighConvolveAvgVert(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] yFilters,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int x, y;
|
|
src -= srcStride * (SubpelTaps / 2 - 1);
|
|
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
int yQ4 = y0Q4;
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
ushort* srcY = &src[(yQ4 >> SubpelBits) * srcStride];
|
|
ref Array8<short> yFilter = ref yFilters[yQ4 & SubpelMask];
|
|
int k, sum = 0;
|
|
for (k = 0; k < SubpelTaps; ++k)
|
|
{
|
|
sum += srcY[k * srcStride] * yFilter[k];
|
|
}
|
|
|
|
dst[y * dstStride] = (ushort)BitUtils.RoundPowerOfTwo(
|
|
dst[y * dstStride] + BitUtils.ClipPixelHighbd(BitUtils.RoundPowerOfTwo(sum, FilterBits), bd), 1);
|
|
yQ4 += yStepQ4;
|
|
}
|
|
++src;
|
|
++dst;
|
|
}
|
|
}
|
|
|
|
private static unsafe void HighbdConvolve(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
// Note: Fixed size intermediate buffer, temp, places limits on parameters.
|
|
// 2d filtering proceeds in 2 steps:
|
|
// (1) Interpolate horizontally into an intermediate buffer, temp.
|
|
// (2) Interpolate temp vertically to derive the sub-pixel result.
|
|
// Deriving the maximum number of rows in the temp buffer (135):
|
|
// --Smallest scaling factor is x1/2 ==> yStepQ4 = 32 (Normative).
|
|
// --Largest block size is 64x64 pixels.
|
|
// --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
|
|
// original frame (in 1/16th pixel units).
|
|
// --Must round-up because block may be located at sub-pixel position.
|
|
// --Require an additional SubpelTaps rows for the 8-tap filter tails.
|
|
// --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
|
|
ushort* temp = stackalloc ushort[64 * 135];
|
|
int intermediateHeight = (((h - 1) * yStepQ4 + y0Q4) >> SubpelBits) + SubpelTaps;
|
|
|
|
Debug.Assert(w <= 64);
|
|
Debug.Assert(h <= 64);
|
|
Debug.Assert(yStepQ4 <= 32);
|
|
Debug.Assert(xStepQ4 <= 32);
|
|
|
|
HighbdConvolveHoriz(src - srcStride * (SubpelTaps / 2 - 1), srcStride, temp, 64, filter, x0Q4, xStepQ4, w, intermediateHeight, bd);
|
|
HighbdConvolveVert(temp + 64 * (SubpelTaps / 2 - 1), 64, dst, dstStride, filter, y0Q4, yStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8Horiz(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
HighbdConvolveHoriz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8AvgHoriz(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
HighbdConvolveAvgHoriz(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8Vert(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
HighbdConvolveVert(src, srcStride, dst, dstStride, filter, y0Q4, yStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8AvgVert(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
HighConvolveAvgVert(src, srcStride, dst, dstStride, filter, y0Q4, yStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
HighbdConvolve(src, srcStride, dst, dstStride, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolve8Avg(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
// Fixed size intermediate buffer places limits on parameters.
|
|
ushort* temp = stackalloc ushort[64 * 64];
|
|
Debug.Assert(w <= 64);
|
|
Debug.Assert(h <= 64);
|
|
|
|
HighbdConvolve8(src, srcStride, temp, 64, filter, x0Q4, xStepQ4, y0Q4, yStepQ4, w, h, bd);
|
|
HighbdConvolveAvg(temp, 64, dst, dstStride, null, 0, 0, 0, 0, w, h, bd);
|
|
}
|
|
|
|
public static unsafe void HighbdConvolveCopy(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int r;
|
|
|
|
for (r = h; r > 0; --r)
|
|
{
|
|
MemoryUtil.Copy(dst, src, w);
|
|
src += srcStride;
|
|
dst += dstStride;
|
|
}
|
|
}
|
|
|
|
public static unsafe void HighbdConvolveAvg(
|
|
ushort* src,
|
|
int srcStride,
|
|
ushort* dst,
|
|
int dstStride,
|
|
Array8<short>[] filter,
|
|
int x0Q4,
|
|
int xStepQ4,
|
|
int y0Q4,
|
|
int yStepQ4,
|
|
int w,
|
|
int h,
|
|
int bd)
|
|
{
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; ++y)
|
|
{
|
|
for (x = 0; x < w; ++x)
|
|
{
|
|
dst[x] = (ushort)BitUtils.RoundPowerOfTwo(dst[x] + src[x], 1);
|
|
}
|
|
|
|
src += srcStride;
|
|
dst += dstStride;
|
|
}
|
|
}
|
|
}
|
|
}
|