979 lines
37 KiB
C
979 lines
37 KiB
C
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// Copyright 2011 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// SSE2 version of some decoding functions (idct, loop filtering).
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//
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// Author: somnath@google.com (Somnath Banerjee)
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// cduvivier@google.com (Christian Duvivier)
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#include "./dsp.h"
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#if defined(WEBP_USE_SSE2)
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// The 3-coeff sparse transform in SSE2 is not really faster than the plain-C
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// one it seems => disable it by default. Uncomment the following to enable:
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// #define USE_TRANSFORM_AC3
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#include <emmintrin.h>
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#include "../dec/vp8i.h"
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//------------------------------------------------------------------------------
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// Transforms (Paragraph 14.4)
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static void Transform(const int16_t* in, uint8_t* dst, int do_two) {
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// This implementation makes use of 16-bit fixed point versions of two
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// multiply constants:
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// K1 = sqrt(2) * cos (pi/8) ~= 85627 / 2^16
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// K2 = sqrt(2) * sin (pi/8) ~= 35468 / 2^16
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//
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// To be able to use signed 16-bit integers, we use the following trick to
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// have constants within range:
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// - Associated constants are obtained by subtracting the 16-bit fixed point
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// version of one:
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// k = K - (1 << 16) => K = k + (1 << 16)
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// K1 = 85267 => k1 = 20091
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// K2 = 35468 => k2 = -30068
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// - The multiplication of a variable by a constant become the sum of the
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// variable and the multiplication of that variable by the associated
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// constant:
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// (x * K) >> 16 = (x * (k + (1 << 16))) >> 16 = ((x * k ) >> 16) + x
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const __m128i k1 = _mm_set1_epi16(20091);
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const __m128i k2 = _mm_set1_epi16(-30068);
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__m128i T0, T1, T2, T3;
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// Load and concatenate the transform coefficients (we'll do two transforms
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// in parallel). In the case of only one transform, the second half of the
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// vectors will just contain random value we'll never use nor store.
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__m128i in0, in1, in2, in3;
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{
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in0 = _mm_loadl_epi64((__m128i*)&in[0]);
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in1 = _mm_loadl_epi64((__m128i*)&in[4]);
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in2 = _mm_loadl_epi64((__m128i*)&in[8]);
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in3 = _mm_loadl_epi64((__m128i*)&in[12]);
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// a00 a10 a20 a30 x x x x
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// a01 a11 a21 a31 x x x x
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// a02 a12 a22 a32 x x x x
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// a03 a13 a23 a33 x x x x
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if (do_two) {
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const __m128i inB0 = _mm_loadl_epi64((__m128i*)&in[16]);
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const __m128i inB1 = _mm_loadl_epi64((__m128i*)&in[20]);
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const __m128i inB2 = _mm_loadl_epi64((__m128i*)&in[24]);
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const __m128i inB3 = _mm_loadl_epi64((__m128i*)&in[28]);
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in0 = _mm_unpacklo_epi64(in0, inB0);
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in1 = _mm_unpacklo_epi64(in1, inB1);
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in2 = _mm_unpacklo_epi64(in2, inB2);
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in3 = _mm_unpacklo_epi64(in3, inB3);
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// a00 a10 a20 a30 b00 b10 b20 b30
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// a01 a11 a21 a31 b01 b11 b21 b31
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// a02 a12 a22 a32 b02 b12 b22 b32
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// a03 a13 a23 a33 b03 b13 b23 b33
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}
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}
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// Vertical pass and subsequent transpose.
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{
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// First pass, c and d calculations are longer because of the "trick"
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// multiplications.
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const __m128i a = _mm_add_epi16(in0, in2);
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const __m128i b = _mm_sub_epi16(in0, in2);
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// c = MUL(in1, K2) - MUL(in3, K1) = MUL(in1, k2) - MUL(in3, k1) + in1 - in3
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const __m128i c1 = _mm_mulhi_epi16(in1, k2);
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const __m128i c2 = _mm_mulhi_epi16(in3, k1);
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const __m128i c3 = _mm_sub_epi16(in1, in3);
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const __m128i c4 = _mm_sub_epi16(c1, c2);
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const __m128i c = _mm_add_epi16(c3, c4);
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// d = MUL(in1, K1) + MUL(in3, K2) = MUL(in1, k1) + MUL(in3, k2) + in1 + in3
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const __m128i d1 = _mm_mulhi_epi16(in1, k1);
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const __m128i d2 = _mm_mulhi_epi16(in3, k2);
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const __m128i d3 = _mm_add_epi16(in1, in3);
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const __m128i d4 = _mm_add_epi16(d1, d2);
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const __m128i d = _mm_add_epi16(d3, d4);
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// Second pass.
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const __m128i tmp0 = _mm_add_epi16(a, d);
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const __m128i tmp1 = _mm_add_epi16(b, c);
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const __m128i tmp2 = _mm_sub_epi16(b, c);
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const __m128i tmp3 = _mm_sub_epi16(a, d);
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// Transpose the two 4x4.
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// a00 a01 a02 a03 b00 b01 b02 b03
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// a10 a11 a12 a13 b10 b11 b12 b13
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// a20 a21 a22 a23 b20 b21 b22 b23
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// a30 a31 a32 a33 b30 b31 b32 b33
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const __m128i transpose0_0 = _mm_unpacklo_epi16(tmp0, tmp1);
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const __m128i transpose0_1 = _mm_unpacklo_epi16(tmp2, tmp3);
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const __m128i transpose0_2 = _mm_unpackhi_epi16(tmp0, tmp1);
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const __m128i transpose0_3 = _mm_unpackhi_epi16(tmp2, tmp3);
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// a00 a10 a01 a11 a02 a12 a03 a13
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// a20 a30 a21 a31 a22 a32 a23 a33
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// b00 b10 b01 b11 b02 b12 b03 b13
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// b20 b30 b21 b31 b22 b32 b23 b33
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const __m128i transpose1_0 = _mm_unpacklo_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_1 = _mm_unpacklo_epi32(transpose0_2, transpose0_3);
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const __m128i transpose1_2 = _mm_unpackhi_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_3 = _mm_unpackhi_epi32(transpose0_2, transpose0_3);
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// a00 a10 a20 a30 a01 a11 a21 a31
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// b00 b10 b20 b30 b01 b11 b21 b31
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// a02 a12 a22 a32 a03 a13 a23 a33
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// b02 b12 a22 b32 b03 b13 b23 b33
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T0 = _mm_unpacklo_epi64(transpose1_0, transpose1_1);
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T1 = _mm_unpackhi_epi64(transpose1_0, transpose1_1);
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T2 = _mm_unpacklo_epi64(transpose1_2, transpose1_3);
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T3 = _mm_unpackhi_epi64(transpose1_2, transpose1_3);
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// a00 a10 a20 a30 b00 b10 b20 b30
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// a01 a11 a21 a31 b01 b11 b21 b31
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// a02 a12 a22 a32 b02 b12 b22 b32
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// a03 a13 a23 a33 b03 b13 b23 b33
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}
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// Horizontal pass and subsequent transpose.
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{
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// First pass, c and d calculations are longer because of the "trick"
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// multiplications.
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const __m128i four = _mm_set1_epi16(4);
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const __m128i dc = _mm_add_epi16(T0, four);
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const __m128i a = _mm_add_epi16(dc, T2);
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const __m128i b = _mm_sub_epi16(dc, T2);
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// c = MUL(T1, K2) - MUL(T3, K1) = MUL(T1, k2) - MUL(T3, k1) + T1 - T3
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const __m128i c1 = _mm_mulhi_epi16(T1, k2);
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const __m128i c2 = _mm_mulhi_epi16(T3, k1);
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const __m128i c3 = _mm_sub_epi16(T1, T3);
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const __m128i c4 = _mm_sub_epi16(c1, c2);
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const __m128i c = _mm_add_epi16(c3, c4);
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// d = MUL(T1, K1) + MUL(T3, K2) = MUL(T1, k1) + MUL(T3, k2) + T1 + T3
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const __m128i d1 = _mm_mulhi_epi16(T1, k1);
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const __m128i d2 = _mm_mulhi_epi16(T3, k2);
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const __m128i d3 = _mm_add_epi16(T1, T3);
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const __m128i d4 = _mm_add_epi16(d1, d2);
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const __m128i d = _mm_add_epi16(d3, d4);
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// Second pass.
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const __m128i tmp0 = _mm_add_epi16(a, d);
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const __m128i tmp1 = _mm_add_epi16(b, c);
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const __m128i tmp2 = _mm_sub_epi16(b, c);
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const __m128i tmp3 = _mm_sub_epi16(a, d);
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const __m128i shifted0 = _mm_srai_epi16(tmp0, 3);
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const __m128i shifted1 = _mm_srai_epi16(tmp1, 3);
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const __m128i shifted2 = _mm_srai_epi16(tmp2, 3);
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const __m128i shifted3 = _mm_srai_epi16(tmp3, 3);
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// Transpose the two 4x4.
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// a00 a01 a02 a03 b00 b01 b02 b03
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// a10 a11 a12 a13 b10 b11 b12 b13
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// a20 a21 a22 a23 b20 b21 b22 b23
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// a30 a31 a32 a33 b30 b31 b32 b33
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const __m128i transpose0_0 = _mm_unpacklo_epi16(shifted0, shifted1);
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const __m128i transpose0_1 = _mm_unpacklo_epi16(shifted2, shifted3);
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const __m128i transpose0_2 = _mm_unpackhi_epi16(shifted0, shifted1);
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const __m128i transpose0_3 = _mm_unpackhi_epi16(shifted2, shifted3);
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// a00 a10 a01 a11 a02 a12 a03 a13
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// a20 a30 a21 a31 a22 a32 a23 a33
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// b00 b10 b01 b11 b02 b12 b03 b13
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// b20 b30 b21 b31 b22 b32 b23 b33
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const __m128i transpose1_0 = _mm_unpacklo_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_1 = _mm_unpacklo_epi32(transpose0_2, transpose0_3);
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const __m128i transpose1_2 = _mm_unpackhi_epi32(transpose0_0, transpose0_1);
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const __m128i transpose1_3 = _mm_unpackhi_epi32(transpose0_2, transpose0_3);
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// a00 a10 a20 a30 a01 a11 a21 a31
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// b00 b10 b20 b30 b01 b11 b21 b31
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// a02 a12 a22 a32 a03 a13 a23 a33
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// b02 b12 a22 b32 b03 b13 b23 b33
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T0 = _mm_unpacklo_epi64(transpose1_0, transpose1_1);
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T1 = _mm_unpackhi_epi64(transpose1_0, transpose1_1);
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T2 = _mm_unpacklo_epi64(transpose1_2, transpose1_3);
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T3 = _mm_unpackhi_epi64(transpose1_2, transpose1_3);
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// a00 a10 a20 a30 b00 b10 b20 b30
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// a01 a11 a21 a31 b01 b11 b21 b31
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// a02 a12 a22 a32 b02 b12 b22 b32
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// a03 a13 a23 a33 b03 b13 b23 b33
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}
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// Add inverse transform to 'dst' and store.
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{
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const __m128i zero = _mm_setzero_si128();
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// Load the reference(s).
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__m128i dst0, dst1, dst2, dst3;
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if (do_two) {
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// Load eight bytes/pixels per line.
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dst0 = _mm_loadl_epi64((__m128i*)(dst + 0 * BPS));
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dst1 = _mm_loadl_epi64((__m128i*)(dst + 1 * BPS));
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dst2 = _mm_loadl_epi64((__m128i*)(dst + 2 * BPS));
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dst3 = _mm_loadl_epi64((__m128i*)(dst + 3 * BPS));
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} else {
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// Load four bytes/pixels per line.
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dst0 = _mm_cvtsi32_si128(*(int*)(dst + 0 * BPS));
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dst1 = _mm_cvtsi32_si128(*(int*)(dst + 1 * BPS));
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dst2 = _mm_cvtsi32_si128(*(int*)(dst + 2 * BPS));
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dst3 = _mm_cvtsi32_si128(*(int*)(dst + 3 * BPS));
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}
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// Convert to 16b.
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dst0 = _mm_unpacklo_epi8(dst0, zero);
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dst1 = _mm_unpacklo_epi8(dst1, zero);
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dst2 = _mm_unpacklo_epi8(dst2, zero);
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dst3 = _mm_unpacklo_epi8(dst3, zero);
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// Add the inverse transform(s).
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dst0 = _mm_add_epi16(dst0, T0);
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dst1 = _mm_add_epi16(dst1, T1);
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dst2 = _mm_add_epi16(dst2, T2);
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dst3 = _mm_add_epi16(dst3, T3);
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// Unsigned saturate to 8b.
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dst0 = _mm_packus_epi16(dst0, dst0);
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dst1 = _mm_packus_epi16(dst1, dst1);
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dst2 = _mm_packus_epi16(dst2, dst2);
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dst3 = _mm_packus_epi16(dst3, dst3);
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// Store the results.
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if (do_two) {
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// Store eight bytes/pixels per line.
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_mm_storel_epi64((__m128i*)(dst + 0 * BPS), dst0);
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_mm_storel_epi64((__m128i*)(dst + 1 * BPS), dst1);
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_mm_storel_epi64((__m128i*)(dst + 2 * BPS), dst2);
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_mm_storel_epi64((__m128i*)(dst + 3 * BPS), dst3);
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} else {
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// Store four bytes/pixels per line.
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*(int*)(dst + 0 * BPS) = _mm_cvtsi128_si32(dst0);
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*(int*)(dst + 1 * BPS) = _mm_cvtsi128_si32(dst1);
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*(int*)(dst + 2 * BPS) = _mm_cvtsi128_si32(dst2);
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*(int*)(dst + 3 * BPS) = _mm_cvtsi128_si32(dst3);
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}
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}
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}
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#if defined(USE_TRANSFORM_AC3)
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#define MUL(a, b) (((a) * (b)) >> 16)
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static void TransformAC3(const int16_t* in, uint8_t* dst) {
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static const int kC1 = 20091 + (1 << 16);
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static const int kC2 = 35468;
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const __m128i A = _mm_set1_epi16(in[0] + 4);
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const __m128i c4 = _mm_set1_epi16(MUL(in[4], kC2));
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const __m128i d4 = _mm_set1_epi16(MUL(in[4], kC1));
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const int c1 = MUL(in[1], kC2);
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const int d1 = MUL(in[1], kC1);
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const __m128i CD = _mm_set_epi16(0, 0, 0, 0, -d1, -c1, c1, d1);
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const __m128i B = _mm_adds_epi16(A, CD);
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const __m128i m0 = _mm_adds_epi16(B, d4);
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const __m128i m1 = _mm_adds_epi16(B, c4);
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const __m128i m2 = _mm_subs_epi16(B, c4);
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const __m128i m3 = _mm_subs_epi16(B, d4);
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const __m128i zero = _mm_setzero_si128();
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// Load the source pixels.
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__m128i dst0 = _mm_cvtsi32_si128(*(int*)(dst + 0 * BPS));
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|
|
__m128i dst1 = _mm_cvtsi32_si128(*(int*)(dst + 1 * BPS));
|
||
|
|
__m128i dst2 = _mm_cvtsi32_si128(*(int*)(dst + 2 * BPS));
|
||
|
|
__m128i dst3 = _mm_cvtsi32_si128(*(int*)(dst + 3 * BPS));
|
||
|
|
// Convert to 16b.
|
||
|
|
dst0 = _mm_unpacklo_epi8(dst0, zero);
|
||
|
|
dst1 = _mm_unpacklo_epi8(dst1, zero);
|
||
|
|
dst2 = _mm_unpacklo_epi8(dst2, zero);
|
||
|
|
dst3 = _mm_unpacklo_epi8(dst3, zero);
|
||
|
|
// Add the inverse transform.
|
||
|
|
dst0 = _mm_adds_epi16(dst0, _mm_srai_epi16(m0, 3));
|
||
|
|
dst1 = _mm_adds_epi16(dst1, _mm_srai_epi16(m1, 3));
|
||
|
|
dst2 = _mm_adds_epi16(dst2, _mm_srai_epi16(m2, 3));
|
||
|
|
dst3 = _mm_adds_epi16(dst3, _mm_srai_epi16(m3, 3));
|
||
|
|
// Unsigned saturate to 8b.
|
||
|
|
dst0 = _mm_packus_epi16(dst0, dst0);
|
||
|
|
dst1 = _mm_packus_epi16(dst1, dst1);
|
||
|
|
dst2 = _mm_packus_epi16(dst2, dst2);
|
||
|
|
dst3 = _mm_packus_epi16(dst3, dst3);
|
||
|
|
// Store the results.
|
||
|
|
*(int*)(dst + 0 * BPS) = _mm_cvtsi128_si32(dst0);
|
||
|
|
*(int*)(dst + 1 * BPS) = _mm_cvtsi128_si32(dst1);
|
||
|
|
*(int*)(dst + 2 * BPS) = _mm_cvtsi128_si32(dst2);
|
||
|
|
*(int*)(dst + 3 * BPS) = _mm_cvtsi128_si32(dst3);
|
||
|
|
}
|
||
|
|
#undef MUL
|
||
|
|
#endif // USE_TRANSFORM_AC3
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Loop Filter (Paragraph 15)
|
||
|
|
|
||
|
|
// Compute abs(p - q) = subs(p - q) OR subs(q - p)
|
||
|
|
#define MM_ABS(p, q) _mm_or_si128( \
|
||
|
|
_mm_subs_epu8((q), (p)), \
|
||
|
|
_mm_subs_epu8((p), (q)))
|
||
|
|
|
||
|
|
// Shift each byte of "x" by 3 bits while preserving by the sign bit.
|
||
|
|
static WEBP_INLINE void SignedShift8b(__m128i* const x) {
|
||
|
|
const __m128i zero = _mm_setzero_si128();
|
||
|
|
const __m128i signs = _mm_cmpgt_epi8(zero, *x);
|
||
|
|
const __m128i lo_0 = _mm_unpacklo_epi8(*x, signs); // s8 -> s16 sign extend
|
||
|
|
const __m128i hi_0 = _mm_unpackhi_epi8(*x, signs);
|
||
|
|
const __m128i lo_1 = _mm_srai_epi16(lo_0, 3);
|
||
|
|
const __m128i hi_1 = _mm_srai_epi16(hi_0, 3);
|
||
|
|
*x = _mm_packs_epi16(lo_1, hi_1);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define FLIP_SIGN_BIT2(a, b) { \
|
||
|
|
a = _mm_xor_si128(a, sign_bit); \
|
||
|
|
b = _mm_xor_si128(b, sign_bit); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define FLIP_SIGN_BIT4(a, b, c, d) { \
|
||
|
|
FLIP_SIGN_BIT2(a, b); \
|
||
|
|
FLIP_SIGN_BIT2(c, d); \
|
||
|
|
}
|
||
|
|
|
||
|
|
// input/output is uint8_t
|
||
|
|
static WEBP_INLINE void GetNotHEV(const __m128i* const p1,
|
||
|
|
const __m128i* const p0,
|
||
|
|
const __m128i* const q0,
|
||
|
|
const __m128i* const q1,
|
||
|
|
int hev_thresh, __m128i* const not_hev) {
|
||
|
|
const __m128i zero = _mm_setzero_si128();
|
||
|
|
const __m128i t_1 = MM_ABS(*p1, *p0);
|
||
|
|
const __m128i t_2 = MM_ABS(*q1, *q0);
|
||
|
|
|
||
|
|
const __m128i h = _mm_set1_epi8(hev_thresh);
|
||
|
|
const __m128i t_3 = _mm_subs_epu8(t_1, h); // abs(p1 - p0) - hev_tresh
|
||
|
|
const __m128i t_4 = _mm_subs_epu8(t_2, h); // abs(q1 - q0) - hev_tresh
|
||
|
|
|
||
|
|
*not_hev = _mm_or_si128(t_3, t_4);
|
||
|
|
*not_hev = _mm_cmpeq_epi8(*not_hev, zero); // not_hev <= t1 && not_hev <= t2
|
||
|
|
}
|
||
|
|
|
||
|
|
// input pixels are int8_t
|
||
|
|
static WEBP_INLINE void GetBaseDelta(const __m128i* const p1,
|
||
|
|
const __m128i* const p0,
|
||
|
|
const __m128i* const q0,
|
||
|
|
const __m128i* const q1,
|
||
|
|
__m128i* const delta) {
|
||
|
|
// beware of addition order, for saturation!
|
||
|
|
const __m128i p1_q1 = _mm_subs_epi8(*p1, *q1); // p1 - q1
|
||
|
|
const __m128i q0_p0 = _mm_subs_epi8(*q0, *p0); // q0 - p0
|
||
|
|
const __m128i s1 = _mm_adds_epi8(p1_q1, q0_p0); // p1 - q1 + 1 * (q0 - p0)
|
||
|
|
const __m128i s2 = _mm_adds_epi8(q0_p0, s1); // p1 - q1 + 2 * (q0 - p0)
|
||
|
|
const __m128i s3 = _mm_adds_epi8(q0_p0, s2); // p1 - q1 + 3 * (q0 - p0)
|
||
|
|
*delta = s3;
|
||
|
|
}
|
||
|
|
|
||
|
|
// input and output are int8_t
|
||
|
|
static WEBP_INLINE void DoSimpleFilter(__m128i* const p0, __m128i* const q0,
|
||
|
|
const __m128i* const fl) {
|
||
|
|
const __m128i k3 = _mm_set1_epi8(3);
|
||
|
|
const __m128i k4 = _mm_set1_epi8(4);
|
||
|
|
__m128i v3 = _mm_adds_epi8(*fl, k3);
|
||
|
|
__m128i v4 = _mm_adds_epi8(*fl, k4);
|
||
|
|
|
||
|
|
SignedShift8b(&v4); // v4 >> 3
|
||
|
|
SignedShift8b(&v3); // v3 >> 3
|
||
|
|
*q0 = _mm_subs_epi8(*q0, v4); // q0 -= v4
|
||
|
|
*p0 = _mm_adds_epi8(*p0, v3); // p0 += v3
|
||
|
|
}
|
||
|
|
|
||
|
|
// Updates values of 2 pixels at MB edge during complex filtering.
|
||
|
|
// Update operations:
|
||
|
|
// q = q - delta and p = p + delta; where delta = [(a_hi >> 7), (a_lo >> 7)]
|
||
|
|
// Pixels 'pi' and 'qi' are int8_t on input, uint8_t on output (sign flip).
|
||
|
|
static WEBP_INLINE void Update2Pixels(__m128i* const pi, __m128i* const qi,
|
||
|
|
const __m128i* const a0_lo,
|
||
|
|
const __m128i* const a0_hi) {
|
||
|
|
const __m128i a1_lo = _mm_srai_epi16(*a0_lo, 7);
|
||
|
|
const __m128i a1_hi = _mm_srai_epi16(*a0_hi, 7);
|
||
|
|
const __m128i delta = _mm_packs_epi16(a1_lo, a1_hi);
|
||
|
|
const __m128i sign_bit = _mm_set1_epi8(0x80);
|
||
|
|
*pi = _mm_adds_epi8(*pi, delta);
|
||
|
|
*qi = _mm_subs_epi8(*qi, delta);
|
||
|
|
FLIP_SIGN_BIT2(*pi, *qi);
|
||
|
|
}
|
||
|
|
|
||
|
|
// input pixels are uint8_t
|
||
|
|
static WEBP_INLINE void NeedsFilter(const __m128i* const p1,
|
||
|
|
const __m128i* const p0,
|
||
|
|
const __m128i* const q0,
|
||
|
|
const __m128i* const q1,
|
||
|
|
int thresh, __m128i* const mask) {
|
||
|
|
const __m128i m_thresh = _mm_set1_epi8(thresh);
|
||
|
|
const __m128i t1 = MM_ABS(*p1, *q1); // abs(p1 - q1)
|
||
|
|
const __m128i kFE = _mm_set1_epi8(0xFE);
|
||
|
|
const __m128i t2 = _mm_and_si128(t1, kFE); // set lsb of each byte to zero
|
||
|
|
const __m128i t3 = _mm_srli_epi16(t2, 1); // abs(p1 - q1) / 2
|
||
|
|
|
||
|
|
const __m128i t4 = MM_ABS(*p0, *q0); // abs(p0 - q0)
|
||
|
|
const __m128i t5 = _mm_adds_epu8(t4, t4); // abs(p0 - q0) * 2
|
||
|
|
const __m128i t6 = _mm_adds_epu8(t5, t3); // abs(p0-q0)*2 + abs(p1-q1)/2
|
||
|
|
|
||
|
|
const __m128i t7 = _mm_subs_epu8(t6, m_thresh); // mask <= m_thresh
|
||
|
|
*mask = _mm_cmpeq_epi8(t7, _mm_setzero_si128());
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Edge filtering functions
|
||
|
|
|
||
|
|
// Applies filter on 2 pixels (p0 and q0)
|
||
|
|
static WEBP_INLINE void DoFilter2(__m128i* const p1, __m128i* const p0,
|
||
|
|
__m128i* const q0, __m128i* const q1,
|
||
|
|
int thresh) {
|
||
|
|
__m128i a, mask;
|
||
|
|
const __m128i sign_bit = _mm_set1_epi8(0x80);
|
||
|
|
// convert p1/q1 to int8_t (for GetBaseDelta)
|
||
|
|
const __m128i p1s = _mm_xor_si128(*p1, sign_bit);
|
||
|
|
const __m128i q1s = _mm_xor_si128(*q1, sign_bit);
|
||
|
|
|
||
|
|
NeedsFilter(p1, p0, q0, q1, thresh, &mask);
|
||
|
|
|
||
|
|
FLIP_SIGN_BIT2(*p0, *q0);
|
||
|
|
GetBaseDelta(&p1s, p0, q0, &q1s, &a);
|
||
|
|
a = _mm_and_si128(a, mask); // mask filter values we don't care about
|
||
|
|
DoSimpleFilter(p0, q0, &a);
|
||
|
|
FLIP_SIGN_BIT2(*p0, *q0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Applies filter on 4 pixels (p1, p0, q0 and q1)
|
||
|
|
static WEBP_INLINE void DoFilter4(__m128i* const p1, __m128i* const p0,
|
||
|
|
__m128i* const q0, __m128i* const q1,
|
||
|
|
const __m128i* const mask, int hev_thresh) {
|
||
|
|
const __m128i sign_bit = _mm_set1_epi8(0x80);
|
||
|
|
const __m128i k64 = _mm_set1_epi8(0x40);
|
||
|
|
const __m128i zero = _mm_setzero_si128();
|
||
|
|
__m128i not_hev;
|
||
|
|
__m128i t1, t2, t3;
|
||
|
|
|
||
|
|
// compute hev mask
|
||
|
|
GetNotHEV(p1, p0, q0, q1, hev_thresh, ¬_hev);
|
||
|
|
|
||
|
|
// convert to signed values
|
||
|
|
FLIP_SIGN_BIT4(*p1, *p0, *q0, *q1);
|
||
|
|
|
||
|
|
t1 = _mm_subs_epi8(*p1, *q1); // p1 - q1
|
||
|
|
t1 = _mm_andnot_si128(not_hev, t1); // hev(p1 - q1)
|
||
|
|
t2 = _mm_subs_epi8(*q0, *p0); // q0 - p0
|
||
|
|
t1 = _mm_adds_epi8(t1, t2); // hev(p1 - q1) + 1 * (q0 - p0)
|
||
|
|
t1 = _mm_adds_epi8(t1, t2); // hev(p1 - q1) + 2 * (q0 - p0)
|
||
|
|
t1 = _mm_adds_epi8(t1, t2); // hev(p1 - q1) + 3 * (q0 - p0)
|
||
|
|
t1 = _mm_and_si128(t1, *mask); // mask filter values we don't care about
|
||
|
|
|
||
|
|
t2 = _mm_set1_epi8(3);
|
||
|
|
t3 = _mm_set1_epi8(4);
|
||
|
|
t2 = _mm_adds_epi8(t1, t2); // 3 * (q0 - p0) + (p1 - q1) + 3
|
||
|
|
t3 = _mm_adds_epi8(t1, t3); // 3 * (q0 - p0) + (p1 - q1) + 4
|
||
|
|
SignedShift8b(&t2); // (3 * (q0 - p0) + hev(p1 - q1) + 3) >> 3
|
||
|
|
SignedShift8b(&t3); // (3 * (q0 - p0) + hev(p1 - q1) + 4) >> 3
|
||
|
|
*p0 = _mm_adds_epi8(*p0, t2); // p0 += t2
|
||
|
|
*q0 = _mm_subs_epi8(*q0, t3); // q0 -= t3
|
||
|
|
FLIP_SIGN_BIT2(*p0, *q0);
|
||
|
|
|
||
|
|
// this is equivalent to signed (a + 1) >> 1 calculation
|
||
|
|
t2 = _mm_add_epi8(t3, sign_bit);
|
||
|
|
t3 = _mm_avg_epu8(t2, zero);
|
||
|
|
t3 = _mm_sub_epi8(t3, k64);
|
||
|
|
|
||
|
|
t3 = _mm_and_si128(not_hev, t3); // if !hev
|
||
|
|
*q1 = _mm_subs_epi8(*q1, t3); // q1 -= t3
|
||
|
|
*p1 = _mm_adds_epi8(*p1, t3); // p1 += t3
|
||
|
|
FLIP_SIGN_BIT2(*p1, *q1);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Applies filter on 6 pixels (p2, p1, p0, q0, q1 and q2)
|
||
|
|
static WEBP_INLINE void DoFilter6(__m128i* const p2, __m128i* const p1,
|
||
|
|
__m128i* const p0, __m128i* const q0,
|
||
|
|
__m128i* const q1, __m128i* const q2,
|
||
|
|
const __m128i* const mask, int hev_thresh) {
|
||
|
|
const __m128i zero = _mm_setzero_si128();
|
||
|
|
const __m128i sign_bit = _mm_set1_epi8(0x80);
|
||
|
|
__m128i a, not_hev;
|
||
|
|
|
||
|
|
// compute hev mask
|
||
|
|
GetNotHEV(p1, p0, q0, q1, hev_thresh, ¬_hev);
|
||
|
|
|
||
|
|
FLIP_SIGN_BIT4(*p1, *p0, *q0, *q1);
|
||
|
|
FLIP_SIGN_BIT2(*p2, *q2);
|
||
|
|
GetBaseDelta(p1, p0, q0, q1, &a);
|
||
|
|
|
||
|
|
{ // do simple filter on pixels with hev
|
||
|
|
const __m128i m = _mm_andnot_si128(not_hev, *mask);
|
||
|
|
const __m128i f = _mm_and_si128(a, m);
|
||
|
|
DoSimpleFilter(p0, q0, &f);
|
||
|
|
}
|
||
|
|
|
||
|
|
{ // do strong filter on pixels with not hev
|
||
|
|
const __m128i k9 = _mm_set1_epi16(0x0900);
|
||
|
|
const __m128i k63 = _mm_set1_epi16(63);
|
||
|
|
|
||
|
|
const __m128i m = _mm_and_si128(not_hev, *mask);
|
||
|
|
const __m128i f = _mm_and_si128(a, m);
|
||
|
|
|
||
|
|
const __m128i f_lo = _mm_unpacklo_epi8(zero, f);
|
||
|
|
const __m128i f_hi = _mm_unpackhi_epi8(zero, f);
|
||
|
|
|
||
|
|
const __m128i f9_lo = _mm_mulhi_epi16(f_lo, k9); // Filter (lo) * 9
|
||
|
|
const __m128i f9_hi = _mm_mulhi_epi16(f_hi, k9); // Filter (hi) * 9
|
||
|
|
|
||
|
|
const __m128i a2_lo = _mm_add_epi16(f9_lo, k63); // Filter * 9 + 63
|
||
|
|
const __m128i a2_hi = _mm_add_epi16(f9_hi, k63); // Filter * 9 + 63
|
||
|
|
|
||
|
|
const __m128i a1_lo = _mm_add_epi16(a2_lo, f9_lo); // Filter * 18 + 63
|
||
|
|
const __m128i a1_hi = _mm_add_epi16(a2_hi, f9_hi); // Filter * 18 + 63
|
||
|
|
|
||
|
|
const __m128i a0_lo = _mm_add_epi16(a1_lo, f9_lo); // Filter * 27 + 63
|
||
|
|
const __m128i a0_hi = _mm_add_epi16(a1_hi, f9_hi); // Filter * 27 + 63
|
||
|
|
|
||
|
|
Update2Pixels(p2, q2, &a2_lo, &a2_hi);
|
||
|
|
Update2Pixels(p1, q1, &a1_lo, &a1_hi);
|
||
|
|
Update2Pixels(p0, q0, &a0_lo, &a0_hi);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// reads 8 rows across a vertical edge.
|
||
|
|
//
|
||
|
|
// TODO(somnath): Investigate _mm_shuffle* also see if it can be broken into
|
||
|
|
// two Load4x4() to avoid code duplication.
|
||
|
|
static WEBP_INLINE void Load8x4(const uint8_t* const b, int stride,
|
||
|
|
__m128i* const p, __m128i* const q) {
|
||
|
|
__m128i t1, t2;
|
||
|
|
|
||
|
|
// Load 0th, 1st, 4th and 5th rows
|
||
|
|
__m128i r0 = _mm_cvtsi32_si128(*((int*)&b[0 * stride])); // 03 02 01 00
|
||
|
|
__m128i r1 = _mm_cvtsi32_si128(*((int*)&b[1 * stride])); // 13 12 11 10
|
||
|
|
__m128i r4 = _mm_cvtsi32_si128(*((int*)&b[4 * stride])); // 43 42 41 40
|
||
|
|
__m128i r5 = _mm_cvtsi32_si128(*((int*)&b[5 * stride])); // 53 52 51 50
|
||
|
|
|
||
|
|
r0 = _mm_unpacklo_epi32(r0, r4); // 43 42 41 40 03 02 01 00
|
||
|
|
r1 = _mm_unpacklo_epi32(r1, r5); // 53 52 51 50 13 12 11 10
|
||
|
|
|
||
|
|
// t1 = 53 43 52 42 51 41 50 40 13 03 12 02 11 01 10 00
|
||
|
|
t1 = _mm_unpacklo_epi8(r0, r1);
|
||
|
|
|
||
|
|
// Load 2nd, 3rd, 6th and 7th rows
|
||
|
|
r0 = _mm_cvtsi32_si128(*((int*)&b[2 * stride])); // 23 22 21 22
|
||
|
|
r1 = _mm_cvtsi32_si128(*((int*)&b[3 * stride])); // 33 32 31 30
|
||
|
|
r4 = _mm_cvtsi32_si128(*((int*)&b[6 * stride])); // 63 62 61 60
|
||
|
|
r5 = _mm_cvtsi32_si128(*((int*)&b[7 * stride])); // 73 72 71 70
|
||
|
|
|
||
|
|
r0 = _mm_unpacklo_epi32(r0, r4); // 63 62 61 60 23 22 21 20
|
||
|
|
r1 = _mm_unpacklo_epi32(r1, r5); // 73 72 71 70 33 32 31 30
|
||
|
|
|
||
|
|
// t2 = 73 63 72 62 71 61 70 60 33 23 32 22 31 21 30 20
|
||
|
|
t2 = _mm_unpacklo_epi8(r0, r1);
|
||
|
|
|
||
|
|
// t1 = 33 23 13 03 32 22 12 02 31 21 11 01 30 20 10 00
|
||
|
|
// t2 = 73 63 53 43 72 62 52 42 71 61 51 41 70 60 50 40
|
||
|
|
r0 = t1;
|
||
|
|
t1 = _mm_unpacklo_epi16(t1, t2);
|
||
|
|
t2 = _mm_unpackhi_epi16(r0, t2);
|
||
|
|
|
||
|
|
// *p = 71 61 51 41 31 21 11 01 70 60 50 40 30 20 10 00
|
||
|
|
// *q = 73 63 53 43 33 23 13 03 72 62 52 42 32 22 12 02
|
||
|
|
*p = _mm_unpacklo_epi32(t1, t2);
|
||
|
|
*q = _mm_unpackhi_epi32(t1, t2);
|
||
|
|
}
|
||
|
|
|
||
|
|
static WEBP_INLINE void Load16x4(const uint8_t* const r0,
|
||
|
|
const uint8_t* const r8,
|
||
|
|
int stride,
|
||
|
|
__m128i* const p1, __m128i* const p0,
|
||
|
|
__m128i* const q0, __m128i* const q1) {
|
||
|
|
__m128i t1, t2;
|
||
|
|
// Assume the pixels around the edge (|) are numbered as follows
|
||
|
|
// 00 01 | 02 03
|
||
|
|
// 10 11 | 12 13
|
||
|
|
// ... | ...
|
||
|
|
// e0 e1 | e2 e3
|
||
|
|
// f0 f1 | f2 f3
|
||
|
|
//
|
||
|
|
// r0 is pointing to the 0th row (00)
|
||
|
|
// r8 is pointing to the 8th row (80)
|
||
|
|
|
||
|
|
// Load
|
||
|
|
// p1 = 71 61 51 41 31 21 11 01 70 60 50 40 30 20 10 00
|
||
|
|
// q0 = 73 63 53 43 33 23 13 03 72 62 52 42 32 22 12 02
|
||
|
|
// p0 = f1 e1 d1 c1 b1 a1 91 81 f0 e0 d0 c0 b0 a0 90 80
|
||
|
|
// q1 = f3 e3 d3 c3 b3 a3 93 83 f2 e2 d2 c2 b2 a2 92 82
|
||
|
|
Load8x4(r0, stride, p1, q0);
|
||
|
|
Load8x4(r8, stride, p0, q1);
|
||
|
|
|
||
|
|
t1 = *p1;
|
||
|
|
t2 = *q0;
|
||
|
|
// p1 = f0 e0 d0 c0 b0 a0 90 80 70 60 50 40 30 20 10 00
|
||
|
|
// p0 = f1 e1 d1 c1 b1 a1 91 81 71 61 51 41 31 21 11 01
|
||
|
|
// q0 = f2 e2 d2 c2 b2 a2 92 82 72 62 52 42 32 22 12 02
|
||
|
|
// q1 = f3 e3 d3 c3 b3 a3 93 83 73 63 53 43 33 23 13 03
|
||
|
|
*p1 = _mm_unpacklo_epi64(t1, *p0);
|
||
|
|
*p0 = _mm_unpackhi_epi64(t1, *p0);
|
||
|
|
*q0 = _mm_unpacklo_epi64(t2, *q1);
|
||
|
|
*q1 = _mm_unpackhi_epi64(t2, *q1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static WEBP_INLINE void Store4x4(__m128i* const x, uint8_t* dst, int stride) {
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < 4; ++i, dst += stride) {
|
||
|
|
*((int32_t*)dst) = _mm_cvtsi128_si32(*x);
|
||
|
|
*x = _mm_srli_si128(*x, 4);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Transpose back and store
|
||
|
|
static WEBP_INLINE void Store16x4(const __m128i* const p1,
|
||
|
|
const __m128i* const p0,
|
||
|
|
const __m128i* const q0,
|
||
|
|
const __m128i* const q1,
|
||
|
|
uint8_t* r0, uint8_t* r8,
|
||
|
|
int stride) {
|
||
|
|
__m128i t1, p1_s, p0_s, q0_s, q1_s;
|
||
|
|
|
||
|
|
// p0 = 71 70 61 60 51 50 41 40 31 30 21 20 11 10 01 00
|
||
|
|
// p1 = f1 f0 e1 e0 d1 d0 c1 c0 b1 b0 a1 a0 91 90 81 80
|
||
|
|
t1 = *p0;
|
||
|
|
p0_s = _mm_unpacklo_epi8(*p1, t1);
|
||
|
|
p1_s = _mm_unpackhi_epi8(*p1, t1);
|
||
|
|
|
||
|
|
// q0 = 73 72 63 62 53 52 43 42 33 32 23 22 13 12 03 02
|
||
|
|
// q1 = f3 f2 e3 e2 d3 d2 c3 c2 b3 b2 a3 a2 93 92 83 82
|
||
|
|
t1 = *q0;
|
||
|
|
q0_s = _mm_unpacklo_epi8(t1, *q1);
|
||
|
|
q1_s = _mm_unpackhi_epi8(t1, *q1);
|
||
|
|
|
||
|
|
// p0 = 33 32 31 30 23 22 21 20 13 12 11 10 03 02 01 00
|
||
|
|
// q0 = 73 72 71 70 63 62 61 60 53 52 51 50 43 42 41 40
|
||
|
|
t1 = p0_s;
|
||
|
|
p0_s = _mm_unpacklo_epi16(t1, q0_s);
|
||
|
|
q0_s = _mm_unpackhi_epi16(t1, q0_s);
|
||
|
|
|
||
|
|
// p1 = b3 b2 b1 b0 a3 a2 a1 a0 93 92 91 90 83 82 81 80
|
||
|
|
// q1 = f3 f2 f1 f0 e3 e2 e1 e0 d3 d2 d1 d0 c3 c2 c1 c0
|
||
|
|
t1 = p1_s;
|
||
|
|
p1_s = _mm_unpacklo_epi16(t1, q1_s);
|
||
|
|
q1_s = _mm_unpackhi_epi16(t1, q1_s);
|
||
|
|
|
||
|
|
Store4x4(&p0_s, r0, stride);
|
||
|
|
r0 += 4 * stride;
|
||
|
|
Store4x4(&q0_s, r0, stride);
|
||
|
|
|
||
|
|
Store4x4(&p1_s, r8, stride);
|
||
|
|
r8 += 4 * stride;
|
||
|
|
Store4x4(&q1_s, r8, stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Simple In-loop filtering (Paragraph 15.2)
|
||
|
|
|
||
|
|
static void SimpleVFilter16(uint8_t* p, int stride, int thresh) {
|
||
|
|
// Load
|
||
|
|
__m128i p1 = _mm_loadu_si128((__m128i*)&p[-2 * stride]);
|
||
|
|
__m128i p0 = _mm_loadu_si128((__m128i*)&p[-stride]);
|
||
|
|
__m128i q0 = _mm_loadu_si128((__m128i*)&p[0]);
|
||
|
|
__m128i q1 = _mm_loadu_si128((__m128i*)&p[stride]);
|
||
|
|
|
||
|
|
DoFilter2(&p1, &p0, &q0, &q1, thresh);
|
||
|
|
|
||
|
|
// Store
|
||
|
|
_mm_storeu_si128((__m128i*)&p[-stride], p0);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[0], q0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void SimpleHFilter16(uint8_t* p, int stride, int thresh) {
|
||
|
|
__m128i p1, p0, q0, q1;
|
||
|
|
|
||
|
|
p -= 2; // beginning of p1
|
||
|
|
|
||
|
|
Load16x4(p, p + 8 * stride, stride, &p1, &p0, &q0, &q1);
|
||
|
|
DoFilter2(&p1, &p0, &q0, &q1, thresh);
|
||
|
|
Store16x4(&p1, &p0, &q0, &q1, p, p + 8 * stride, stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void SimpleVFilter16i(uint8_t* p, int stride, int thresh) {
|
||
|
|
int k;
|
||
|
|
for (k = 3; k > 0; --k) {
|
||
|
|
p += 4 * stride;
|
||
|
|
SimpleVFilter16(p, stride, thresh);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void SimpleHFilter16i(uint8_t* p, int stride, int thresh) {
|
||
|
|
int k;
|
||
|
|
for (k = 3; k > 0; --k) {
|
||
|
|
p += 4;
|
||
|
|
SimpleHFilter16(p, stride, thresh);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Complex In-loop filtering (Paragraph 15.3)
|
||
|
|
|
||
|
|
#define MAX_DIFF1(p3, p2, p1, p0, m) do { \
|
||
|
|
m = MM_ABS(p1, p0); \
|
||
|
|
m = _mm_max_epu8(m, MM_ABS(p3, p2)); \
|
||
|
|
m = _mm_max_epu8(m, MM_ABS(p2, p1)); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define MAX_DIFF2(p3, p2, p1, p0, m) do { \
|
||
|
|
m = _mm_max_epu8(m, MM_ABS(p1, p0)); \
|
||
|
|
m = _mm_max_epu8(m, MM_ABS(p3, p2)); \
|
||
|
|
m = _mm_max_epu8(m, MM_ABS(p2, p1)); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define LOAD_H_EDGES4(p, stride, e1, e2, e3, e4) { \
|
||
|
|
e1 = _mm_loadu_si128((__m128i*)&(p)[0 * stride]); \
|
||
|
|
e2 = _mm_loadu_si128((__m128i*)&(p)[1 * stride]); \
|
||
|
|
e3 = _mm_loadu_si128((__m128i*)&(p)[2 * stride]); \
|
||
|
|
e4 = _mm_loadu_si128((__m128i*)&(p)[3 * stride]); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define LOADUV_H_EDGE(p, u, v, stride) do { \
|
||
|
|
const __m128i U = _mm_loadl_epi64((__m128i*)&(u)[(stride)]); \
|
||
|
|
const __m128i V = _mm_loadl_epi64((__m128i*)&(v)[(stride)]); \
|
||
|
|
p = _mm_unpacklo_epi64(U, V); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define LOADUV_H_EDGES4(u, v, stride, e1, e2, e3, e4) { \
|
||
|
|
LOADUV_H_EDGE(e1, u, v, 0 * stride); \
|
||
|
|
LOADUV_H_EDGE(e2, u, v, 1 * stride); \
|
||
|
|
LOADUV_H_EDGE(e3, u, v, 2 * stride); \
|
||
|
|
LOADUV_H_EDGE(e4, u, v, 3 * stride); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define STOREUV(p, u, v, stride) { \
|
||
|
|
_mm_storel_epi64((__m128i*)&u[(stride)], p); \
|
||
|
|
p = _mm_srli_si128(p, 8); \
|
||
|
|
_mm_storel_epi64((__m128i*)&v[(stride)], p); \
|
||
|
|
}
|
||
|
|
|
||
|
|
static WEBP_INLINE void ComplexMask(const __m128i* const p1,
|
||
|
|
const __m128i* const p0,
|
||
|
|
const __m128i* const q0,
|
||
|
|
const __m128i* const q1,
|
||
|
|
int thresh, int ithresh,
|
||
|
|
__m128i* const mask) {
|
||
|
|
const __m128i it = _mm_set1_epi8(ithresh);
|
||
|
|
const __m128i diff = _mm_subs_epu8(*mask, it);
|
||
|
|
const __m128i thresh_mask = _mm_cmpeq_epi8(diff, _mm_setzero_si128());
|
||
|
|
__m128i filter_mask;
|
||
|
|
NeedsFilter(p1, p0, q0, q1, thresh, &filter_mask);
|
||
|
|
*mask = _mm_and_si128(thresh_mask, filter_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
// on macroblock edges
|
||
|
|
static void VFilter16(uint8_t* p, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i t1;
|
||
|
|
__m128i mask;
|
||
|
|
__m128i p2, p1, p0, q0, q1, q2;
|
||
|
|
|
||
|
|
// Load p3, p2, p1, p0
|
||
|
|
LOAD_H_EDGES4(p - 4 * stride, stride, t1, p2, p1, p0);
|
||
|
|
MAX_DIFF1(t1, p2, p1, p0, mask);
|
||
|
|
|
||
|
|
// Load q0, q1, q2, q3
|
||
|
|
LOAD_H_EDGES4(p, stride, q0, q1, q2, t1);
|
||
|
|
MAX_DIFF2(t1, q2, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
// Store
|
||
|
|
_mm_storeu_si128((__m128i*)&p[-3 * stride], p2);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[-2 * stride], p1);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[-1 * stride], p0);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[+0 * stride], q0);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[+1 * stride], q1);
|
||
|
|
_mm_storeu_si128((__m128i*)&p[+2 * stride], q2);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void HFilter16(uint8_t* p, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i mask;
|
||
|
|
__m128i p3, p2, p1, p0, q0, q1, q2, q3;
|
||
|
|
|
||
|
|
uint8_t* const b = p - 4;
|
||
|
|
Load16x4(b, b + 8 * stride, stride, &p3, &p2, &p1, &p0); // p3, p2, p1, p0
|
||
|
|
MAX_DIFF1(p3, p2, p1, p0, mask);
|
||
|
|
|
||
|
|
Load16x4(p, p + 8 * stride, stride, &q0, &q1, &q2, &q3); // q0, q1, q2, q3
|
||
|
|
MAX_DIFF2(q3, q2, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
Store16x4(&p3, &p2, &p1, &p0, b, b + 8 * stride, stride);
|
||
|
|
Store16x4(&q0, &q1, &q2, &q3, p, p + 8 * stride, stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
// on three inner edges
|
||
|
|
static void VFilter16i(uint8_t* p, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
int k;
|
||
|
|
__m128i p3, p2, p1, p0; // loop invariants
|
||
|
|
|
||
|
|
LOAD_H_EDGES4(p, stride, p3, p2, p1, p0); // prologue
|
||
|
|
|
||
|
|
for (k = 3; k > 0; --k) {
|
||
|
|
__m128i mask, tmp1, tmp2;
|
||
|
|
uint8_t* const b = p + 2 * stride; // beginning of p1
|
||
|
|
p += 4 * stride;
|
||
|
|
|
||
|
|
MAX_DIFF1(p3, p2, p1, p0, mask); // compute partial mask
|
||
|
|
LOAD_H_EDGES4(p, stride, p3, p2, tmp1, tmp2);
|
||
|
|
MAX_DIFF2(p3, p2, tmp1, tmp2, mask);
|
||
|
|
|
||
|
|
// p3 and p2 are not just temporary variables here: they will be
|
||
|
|
// re-used for next span. And q2/q3 will become p1/p0 accordingly.
|
||
|
|
ComplexMask(&p1, &p0, &p3, &p2, thresh, ithresh, &mask);
|
||
|
|
DoFilter4(&p1, &p0, &p3, &p2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
// Store
|
||
|
|
_mm_storeu_si128((__m128i*)&b[0 * stride], p1);
|
||
|
|
_mm_storeu_si128((__m128i*)&b[1 * stride], p0);
|
||
|
|
_mm_storeu_si128((__m128i*)&b[2 * stride], p3);
|
||
|
|
_mm_storeu_si128((__m128i*)&b[3 * stride], p2);
|
||
|
|
|
||
|
|
// rotate samples
|
||
|
|
p1 = tmp1;
|
||
|
|
p0 = tmp2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void HFilter16i(uint8_t* p, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
int k;
|
||
|
|
__m128i p3, p2, p1, p0; // loop invariants
|
||
|
|
|
||
|
|
Load16x4(p, p + 8 * stride, stride, &p3, &p2, &p1, &p0); // prologue
|
||
|
|
|
||
|
|
for (k = 3; k > 0; --k) {
|
||
|
|
__m128i mask, tmp1, tmp2;
|
||
|
|
uint8_t* const b = p + 2; // beginning of p1
|
||
|
|
|
||
|
|
p += 4; // beginning of q0 (and next span)
|
||
|
|
|
||
|
|
MAX_DIFF1(p3, p2, p1, p0, mask); // compute partial mask
|
||
|
|
Load16x4(p, p + 8 * stride, stride, &p3, &p2, &tmp1, &tmp2);
|
||
|
|
MAX_DIFF2(p3, p2, tmp1, tmp2, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &p3, &p2, thresh, ithresh, &mask);
|
||
|
|
DoFilter4(&p1, &p0, &p3, &p2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
Store16x4(&p1, &p0, &p3, &p2, b, b + 8 * stride, stride);
|
||
|
|
|
||
|
|
// rotate samples
|
||
|
|
p1 = tmp1;
|
||
|
|
p0 = tmp2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 8-pixels wide variant, for chroma filtering
|
||
|
|
static void VFilter8(uint8_t* u, uint8_t* v, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i mask;
|
||
|
|
__m128i t1, p2, p1, p0, q0, q1, q2;
|
||
|
|
|
||
|
|
// Load p3, p2, p1, p0
|
||
|
|
LOADUV_H_EDGES4(u - 4 * stride, v - 4 * stride, stride, t1, p2, p1, p0);
|
||
|
|
MAX_DIFF1(t1, p2, p1, p0, mask);
|
||
|
|
|
||
|
|
// Load q0, q1, q2, q3
|
||
|
|
LOADUV_H_EDGES4(u, v, stride, q0, q1, q2, t1);
|
||
|
|
MAX_DIFF2(t1, q2, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
// Store
|
||
|
|
STOREUV(p2, u, v, -3 * stride);
|
||
|
|
STOREUV(p1, u, v, -2 * stride);
|
||
|
|
STOREUV(p0, u, v, -1 * stride);
|
||
|
|
STOREUV(q0, u, v, 0 * stride);
|
||
|
|
STOREUV(q1, u, v, 1 * stride);
|
||
|
|
STOREUV(q2, u, v, 2 * stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void HFilter8(uint8_t* u, uint8_t* v, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i mask;
|
||
|
|
__m128i p3, p2, p1, p0, q0, q1, q2, q3;
|
||
|
|
|
||
|
|
uint8_t* const tu = u - 4;
|
||
|
|
uint8_t* const tv = v - 4;
|
||
|
|
Load16x4(tu, tv, stride, &p3, &p2, &p1, &p0); // p3, p2, p1, p0
|
||
|
|
MAX_DIFF1(p3, p2, p1, p0, mask);
|
||
|
|
|
||
|
|
Load16x4(u, v, stride, &q0, &q1, &q2, &q3); // q0, q1, q2, q3
|
||
|
|
MAX_DIFF2(q3, q2, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
|
||
|
|
|
||
|
|
Store16x4(&p3, &p2, &p1, &p0, tu, tv, stride);
|
||
|
|
Store16x4(&q0, &q1, &q2, &q3, u, v, stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void VFilter8i(uint8_t* u, uint8_t* v, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i mask;
|
||
|
|
__m128i t1, t2, p1, p0, q0, q1;
|
||
|
|
|
||
|
|
// Load p3, p2, p1, p0
|
||
|
|
LOADUV_H_EDGES4(u, v, stride, t2, t1, p1, p0);
|
||
|
|
MAX_DIFF1(t2, t1, p1, p0, mask);
|
||
|
|
|
||
|
|
u += 4 * stride;
|
||
|
|
v += 4 * stride;
|
||
|
|
|
||
|
|
// Load q0, q1, q2, q3
|
||
|
|
LOADUV_H_EDGES4(u, v, stride, q0, q1, t1, t2);
|
||
|
|
MAX_DIFF2(t2, t1, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter4(&p1, &p0, &q0, &q1, &mask, hev_thresh);
|
||
|
|
|
||
|
|
// Store
|
||
|
|
STOREUV(p1, u, v, -2 * stride);
|
||
|
|
STOREUV(p0, u, v, -1 * stride);
|
||
|
|
STOREUV(q0, u, v, 0 * stride);
|
||
|
|
STOREUV(q1, u, v, 1 * stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void HFilter8i(uint8_t* u, uint8_t* v, int stride,
|
||
|
|
int thresh, int ithresh, int hev_thresh) {
|
||
|
|
__m128i mask;
|
||
|
|
__m128i t1, t2, p1, p0, q0, q1;
|
||
|
|
Load16x4(u, v, stride, &t2, &t1, &p1, &p0); // p3, p2, p1, p0
|
||
|
|
MAX_DIFF1(t2, t1, p1, p0, mask);
|
||
|
|
|
||
|
|
u += 4; // beginning of q0
|
||
|
|
v += 4;
|
||
|
|
Load16x4(u, v, stride, &q0, &q1, &t1, &t2); // q0, q1, q2, q3
|
||
|
|
MAX_DIFF2(t2, t1, q1, q0, mask);
|
||
|
|
|
||
|
|
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
|
||
|
|
DoFilter4(&p1, &p0, &q0, &q1, &mask, hev_thresh);
|
||
|
|
|
||
|
|
u -= 2; // beginning of p1
|
||
|
|
v -= 2;
|
||
|
|
Store16x4(&p1, &p0, &q0, &q1, u, v, stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // WEBP_USE_SSE2
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Entry point
|
||
|
|
|
||
|
|
extern void VP8DspInitSSE2(void);
|
||
|
|
|
||
|
|
void VP8DspInitSSE2(void) {
|
||
|
|
#if defined(WEBP_USE_SSE2)
|
||
|
|
VP8Transform = Transform;
|
||
|
|
#if defined(USE_TRANSFORM_AC3)
|
||
|
|
VP8TransformAC3 = TransformAC3;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
VP8VFilter16 = VFilter16;
|
||
|
|
VP8HFilter16 = HFilter16;
|
||
|
|
VP8VFilter8 = VFilter8;
|
||
|
|
VP8HFilter8 = HFilter8;
|
||
|
|
VP8VFilter16i = VFilter16i;
|
||
|
|
VP8HFilter16i = HFilter16i;
|
||
|
|
VP8VFilter8i = VFilter8i;
|
||
|
|
VP8HFilter8i = HFilter8i;
|
||
|
|
|
||
|
|
VP8SimpleVFilter16 = SimpleVFilter16;
|
||
|
|
VP8SimpleHFilter16 = SimpleHFilter16;
|
||
|
|
VP8SimpleVFilter16i = SimpleVFilter16i;
|
||
|
|
VP8SimpleHFilter16i = SimpleHFilter16i;
|
||
|
|
#endif // WEBP_USE_SSE2
|
||
|
|
}
|