2019-08-20 19:24:22 +00:00
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// Copyright 2015 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 variant of methods for lossless encoder
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#include "src/dsp/dsp.h"
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#if defined(WEBP_USE_SSE2)
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#include <assert.h>
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#include <emmintrin.h>
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#include "src/dsp/lossless.h"
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#include "src/dsp/common_sse2.h"
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#include "src/dsp/lossless_common.h"
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// For sign-extended multiplying constants, pre-shifted by 5:
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#define CST_5b(X) (((int16_t)((uint16_t)(X) << 8)) >> 5)
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//------------------------------------------------------------------------------
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// Subtract-Green Transform
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static void SubtractGreenFromBlueAndRed_SSE2(uint32_t* argb_data,
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int num_pixels) {
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int i;
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for (i = 0; i + 4 <= num_pixels; i += 4) {
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const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); // argb
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const __m128i A = _mm_srli_epi16(in, 8); // 0 a 0 g
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const __m128i B = _mm_shufflelo_epi16(A, _MM_SHUFFLE(2, 2, 0, 0));
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const __m128i C = _mm_shufflehi_epi16(B, _MM_SHUFFLE(2, 2, 0, 0)); // 0g0g
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const __m128i out = _mm_sub_epi8(in, C);
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_mm_storeu_si128((__m128i*)&argb_data[i], out);
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}
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// fallthrough and finish off with plain-C
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if (i != num_pixels) {
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VP8LSubtractGreenFromBlueAndRed_C(argb_data + i, num_pixels - i);
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}
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}
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//------------------------------------------------------------------------------
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// Color Transform
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#define MK_CST_16(HI, LO) \
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_mm_set1_epi32((int)(((uint32_t)(HI) << 16) | ((LO) & 0xffff)))
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static void TransformColor_SSE2(const VP8LMultipliers* const m,
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uint32_t* argb_data, int num_pixels) {
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const __m128i mults_rb = MK_CST_16(CST_5b(m->green_to_red_),
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CST_5b(m->green_to_blue_));
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const __m128i mults_b2 = MK_CST_16(CST_5b(m->red_to_blue_), 0);
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const __m128i mask_ag = _mm_set1_epi32(0xff00ff00); // alpha-green masks
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const __m128i mask_rb = _mm_set1_epi32(0x00ff00ff); // red-blue masks
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int i;
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for (i = 0; i + 4 <= num_pixels; i += 4) {
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const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); // argb
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const __m128i A = _mm_and_si128(in, mask_ag); // a 0 g 0
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const __m128i B = _mm_shufflelo_epi16(A, _MM_SHUFFLE(2, 2, 0, 0));
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const __m128i C = _mm_shufflehi_epi16(B, _MM_SHUFFLE(2, 2, 0, 0)); // g0g0
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const __m128i D = _mm_mulhi_epi16(C, mults_rb); // x dr x db1
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const __m128i E = _mm_slli_epi16(in, 8); // r 0 b 0
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const __m128i F = _mm_mulhi_epi16(E, mults_b2); // x db2 0 0
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const __m128i G = _mm_srli_epi32(F, 16); // 0 0 x db2
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const __m128i H = _mm_add_epi8(G, D); // x dr x db
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const __m128i I = _mm_and_si128(H, mask_rb); // 0 dr 0 db
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const __m128i out = _mm_sub_epi8(in, I);
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_mm_storeu_si128((__m128i*)&argb_data[i], out);
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}
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// fallthrough and finish off with plain-C
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if (i != num_pixels) {
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VP8LTransformColor_C(m, argb_data + i, num_pixels - i);
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}
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}
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//------------------------------------------------------------------------------
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#define SPAN 8
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static void CollectColorBlueTransforms_SSE2(const uint32_t* argb, int stride,
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int tile_width, int tile_height,
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int green_to_blue, int red_to_blue,
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int histo[]) {
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const __m128i mults_r = MK_CST_16(CST_5b(red_to_blue), 0);
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const __m128i mults_g = MK_CST_16(0, CST_5b(green_to_blue));
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const __m128i mask_g = _mm_set1_epi32(0x00ff00); // green mask
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const __m128i mask_b = _mm_set1_epi32(0x0000ff); // blue mask
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int y;
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for (y = 0; y < tile_height; ++y) {
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const uint32_t* const src = argb + y * stride;
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int i, x;
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for (x = 0; x + SPAN <= tile_width; x += SPAN) {
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uint16_t values[SPAN];
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const __m128i in0 = _mm_loadu_si128((__m128i*)&src[x + 0]);
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const __m128i in1 = _mm_loadu_si128((__m128i*)&src[x + SPAN / 2]);
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const __m128i A0 = _mm_slli_epi16(in0, 8); // r 0 | b 0
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const __m128i A1 = _mm_slli_epi16(in1, 8);
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const __m128i B0 = _mm_and_si128(in0, mask_g); // 0 0 | g 0
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const __m128i B1 = _mm_and_si128(in1, mask_g);
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const __m128i C0 = _mm_mulhi_epi16(A0, mults_r); // x db | 0 0
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const __m128i C1 = _mm_mulhi_epi16(A1, mults_r);
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const __m128i D0 = _mm_mulhi_epi16(B0, mults_g); // 0 0 | x db
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const __m128i D1 = _mm_mulhi_epi16(B1, mults_g);
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const __m128i E0 = _mm_sub_epi8(in0, D0); // x x | x b'
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const __m128i E1 = _mm_sub_epi8(in1, D1);
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const __m128i F0 = _mm_srli_epi32(C0, 16); // 0 0 | x db
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const __m128i F1 = _mm_srli_epi32(C1, 16);
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const __m128i G0 = _mm_sub_epi8(E0, F0); // 0 0 | x b'
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const __m128i G1 = _mm_sub_epi8(E1, F1);
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const __m128i H0 = _mm_and_si128(G0, mask_b); // 0 0 | 0 b
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const __m128i H1 = _mm_and_si128(G1, mask_b);
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const __m128i I = _mm_packs_epi32(H0, H1); // 0 b' | 0 b'
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_mm_storeu_si128((__m128i*)values, I);
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for (i = 0; i < SPAN; ++i) ++histo[values[i]];
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}
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}
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{
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const int left_over = tile_width & (SPAN - 1);
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if (left_over > 0) {
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VP8LCollectColorBlueTransforms_C(argb + tile_width - left_over, stride,
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left_over, tile_height,
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green_to_blue, red_to_blue, histo);
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}
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}
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}
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static void CollectColorRedTransforms_SSE2(const uint32_t* argb, int stride,
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int tile_width, int tile_height,
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int green_to_red, int histo[]) {
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const __m128i mults_g = MK_CST_16(0, CST_5b(green_to_red));
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const __m128i mask_g = _mm_set1_epi32(0x00ff00); // green mask
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const __m128i mask = _mm_set1_epi32(0xff);
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int y;
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for (y = 0; y < tile_height; ++y) {
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const uint32_t* const src = argb + y * stride;
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int i, x;
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for (x = 0; x + SPAN <= tile_width; x += SPAN) {
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uint16_t values[SPAN];
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const __m128i in0 = _mm_loadu_si128((__m128i*)&src[x + 0]);
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const __m128i in1 = _mm_loadu_si128((__m128i*)&src[x + SPAN / 2]);
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const __m128i A0 = _mm_and_si128(in0, mask_g); // 0 0 | g 0
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const __m128i A1 = _mm_and_si128(in1, mask_g);
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const __m128i B0 = _mm_srli_epi32(in0, 16); // 0 0 | x r
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const __m128i B1 = _mm_srli_epi32(in1, 16);
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const __m128i C0 = _mm_mulhi_epi16(A0, mults_g); // 0 0 | x dr
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const __m128i C1 = _mm_mulhi_epi16(A1, mults_g);
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const __m128i E0 = _mm_sub_epi8(B0, C0); // x x | x r'
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const __m128i E1 = _mm_sub_epi8(B1, C1);
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const __m128i F0 = _mm_and_si128(E0, mask); // 0 0 | 0 r'
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const __m128i F1 = _mm_and_si128(E1, mask);
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const __m128i I = _mm_packs_epi32(F0, F1);
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_mm_storeu_si128((__m128i*)values, I);
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for (i = 0; i < SPAN; ++i) ++histo[values[i]];
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}
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}
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{
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const int left_over = tile_width & (SPAN - 1);
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if (left_over > 0) {
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VP8LCollectColorRedTransforms_C(argb + tile_width - left_over, stride,
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left_over, tile_height,
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green_to_red, histo);
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}
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}
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}
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#undef SPAN
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#undef MK_CST_16
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//------------------------------------------------------------------------------
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// Note we are adding uint32_t's as *signed* int32's (using _mm_add_epi32). But
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// that's ok since the histogram values are less than 1<<28 (max picture size).
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#define LINE_SIZE 16 // 8 or 16
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static void AddVector_SSE2(const uint32_t* a, const uint32_t* b, uint32_t* out,
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int size) {
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int i;
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for (i = 0; i + LINE_SIZE <= size; i += LINE_SIZE) {
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const __m128i a0 = _mm_loadu_si128((const __m128i*)&a[i + 0]);
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const __m128i a1 = _mm_loadu_si128((const __m128i*)&a[i + 4]);
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#if (LINE_SIZE == 16)
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const __m128i a2 = _mm_loadu_si128((const __m128i*)&a[i + 8]);
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const __m128i a3 = _mm_loadu_si128((const __m128i*)&a[i + 12]);
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#endif
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const __m128i b0 = _mm_loadu_si128((const __m128i*)&b[i + 0]);
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const __m128i b1 = _mm_loadu_si128((const __m128i*)&b[i + 4]);
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#if (LINE_SIZE == 16)
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const __m128i b2 = _mm_loadu_si128((const __m128i*)&b[i + 8]);
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const __m128i b3 = _mm_loadu_si128((const __m128i*)&b[i + 12]);
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#endif
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_mm_storeu_si128((__m128i*)&out[i + 0], _mm_add_epi32(a0, b0));
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_mm_storeu_si128((__m128i*)&out[i + 4], _mm_add_epi32(a1, b1));
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#if (LINE_SIZE == 16)
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_mm_storeu_si128((__m128i*)&out[i + 8], _mm_add_epi32(a2, b2));
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_mm_storeu_si128((__m128i*)&out[i + 12], _mm_add_epi32(a3, b3));
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#endif
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}
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for (; i < size; ++i) {
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out[i] = a[i] + b[i];
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}
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}
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static void AddVectorEq_SSE2(const uint32_t* a, uint32_t* out, int size) {
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int i;
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for (i = 0; i + LINE_SIZE <= size; i += LINE_SIZE) {
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const __m128i a0 = _mm_loadu_si128((const __m128i*)&a[i + 0]);
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const __m128i a1 = _mm_loadu_si128((const __m128i*)&a[i + 4]);
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#if (LINE_SIZE == 16)
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const __m128i a2 = _mm_loadu_si128((const __m128i*)&a[i + 8]);
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const __m128i a3 = _mm_loadu_si128((const __m128i*)&a[i + 12]);
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#endif
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const __m128i b0 = _mm_loadu_si128((const __m128i*)&out[i + 0]);
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const __m128i b1 = _mm_loadu_si128((const __m128i*)&out[i + 4]);
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#if (LINE_SIZE == 16)
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const __m128i b2 = _mm_loadu_si128((const __m128i*)&out[i + 8]);
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const __m128i b3 = _mm_loadu_si128((const __m128i*)&out[i + 12]);
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#endif
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_mm_storeu_si128((__m128i*)&out[i + 0], _mm_add_epi32(a0, b0));
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_mm_storeu_si128((__m128i*)&out[i + 4], _mm_add_epi32(a1, b1));
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#if (LINE_SIZE == 16)
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_mm_storeu_si128((__m128i*)&out[i + 8], _mm_add_epi32(a2, b2));
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_mm_storeu_si128((__m128i*)&out[i + 12], _mm_add_epi32(a3, b3));
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#endif
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}
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for (; i < size; ++i) {
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out[i] += a[i];
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}
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}
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#undef LINE_SIZE
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//------------------------------------------------------------------------------
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// Entropy
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// Checks whether the X or Y contribution is worth computing and adding.
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// Used in loop unrolling.
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#define ANALYZE_X_OR_Y(x_or_y, j) \
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do { \
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if ((x_or_y)[i + (j)] != 0) retval -= VP8LFastSLog2((x_or_y)[i + (j)]); \
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} while (0)
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// Checks whether the X + Y contribution is worth computing and adding.
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// Used in loop unrolling.
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#define ANALYZE_XY(j) \
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do { \
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if (tmp[j] != 0) { \
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retval -= VP8LFastSLog2(tmp[j]); \
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ANALYZE_X_OR_Y(X, j); \
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} \
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} while (0)
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static float CombinedShannonEntropy_SSE2(const int X[256], const int Y[256]) {
|
|
|
|
|
int i;
|
|
|
|
|
double retval = 0.;
|
|
|
|
|
int sumX, sumXY;
|
|
|
|
|
int32_t tmp[4];
|
|
|
|
|
__m128i zero = _mm_setzero_si128();
|
|
|
|
|
// Sums up X + Y, 4 ints at a time (and will merge it at the end for sumXY).
|
|
|
|
|
__m128i sumXY_128 = zero;
|
|
|
|
|
__m128i sumX_128 = zero;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < 256; i += 4) {
|
|
|
|
|
const __m128i x = _mm_loadu_si128((const __m128i*)(X + i));
|
|
|
|
|
const __m128i y = _mm_loadu_si128((const __m128i*)(Y + i));
|
|
|
|
|
|
|
|
|
|
// Check if any X is non-zero: this actually provides a speedup as X is
|
|
|
|
|
// usually sparse.
|
|
|
|
|
if (_mm_movemask_epi8(_mm_cmpeq_epi32(x, zero)) != 0xFFFF) {
|
|
|
|
|
const __m128i xy_128 = _mm_add_epi32(x, y);
|
|
|
|
|
sumXY_128 = _mm_add_epi32(sumXY_128, xy_128);
|
|
|
|
|
|
|
|
|
|
sumX_128 = _mm_add_epi32(sumX_128, x);
|
|
|
|
|
|
|
|
|
|
// Analyze the different X + Y.
|
|
|
|
|
_mm_storeu_si128((__m128i*)tmp, xy_128);
|
|
|
|
|
|
|
|
|
|
ANALYZE_XY(0);
|
|
|
|
|
ANALYZE_XY(1);
|
|
|
|
|
ANALYZE_XY(2);
|
|
|
|
|
ANALYZE_XY(3);
|
|
|
|
|
} else {
|
|
|
|
|
// X is fully 0, so only deal with Y.
|
|
|
|
|
sumXY_128 = _mm_add_epi32(sumXY_128, y);
|
|
|
|
|
|
|
|
|
|
ANALYZE_X_OR_Y(Y, 0);
|
|
|
|
|
ANALYZE_X_OR_Y(Y, 1);
|
|
|
|
|
ANALYZE_X_OR_Y(Y, 2);
|
|
|
|
|
ANALYZE_X_OR_Y(Y, 3);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Sum up sumX_128 to get sumX.
|
|
|
|
|
_mm_storeu_si128((__m128i*)tmp, sumX_128);
|
|
|
|
|
sumX = tmp[3] + tmp[2] + tmp[1] + tmp[0];
|
|
|
|
|
|
|
|
|
|
// Sum up sumXY_128 to get sumXY.
|
|
|
|
|
_mm_storeu_si128((__m128i*)tmp, sumXY_128);
|
|
|
|
|
sumXY = tmp[3] + tmp[2] + tmp[1] + tmp[0];
|
|
|
|
|
|
|
|
|
|
retval += VP8LFastSLog2(sumX) + VP8LFastSLog2(sumXY);
|
|
|
|
|
return (float)retval;
|
|
|
|
|
}
|
|
|
|
|
#undef ANALYZE_X_OR_Y
|
|
|
|
|
#undef ANALYZE_XY
|
|
|
|
|
|
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
static int VectorMismatch_SSE2(const uint32_t* const array1,
|
|
|
|
|
const uint32_t* const array2, int length) {
|
|
|
|
|
int match_len;
|
|
|
|
|
|
|
|
|
|
if (length >= 12) {
|
|
|
|
|
__m128i A0 = _mm_loadu_si128((const __m128i*)&array1[0]);
|
|
|
|
|
__m128i A1 = _mm_loadu_si128((const __m128i*)&array2[0]);
|
|
|
|
|
match_len = 0;
|
|
|
|
|
do {
|
|
|
|
|
// Loop unrolling and early load both provide a speedup of 10% for the
|
|
|
|
|
// current function. Also, max_limit can be MAX_LENGTH=4096 at most.
|
|
|
|
|
const __m128i cmpA = _mm_cmpeq_epi32(A0, A1);
|
|
|
|
|
const __m128i B0 =
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array1[match_len + 4]);
|
|
|
|
|
const __m128i B1 =
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array2[match_len + 4]);
|
|
|
|
|
if (_mm_movemask_epi8(cmpA) != 0xffff) break;
|
|
|
|
|
match_len += 4;
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
const __m128i cmpB = _mm_cmpeq_epi32(B0, B1);
|
|
|
|
|
A0 = _mm_loadu_si128((const __m128i*)&array1[match_len + 4]);
|
|
|
|
|
A1 = _mm_loadu_si128((const __m128i*)&array2[match_len + 4]);
|
|
|
|
|
if (_mm_movemask_epi8(cmpB) != 0xffff) break;
|
|
|
|
|
match_len += 4;
|
|
|
|
|
}
|
|
|
|
|
} while (match_len + 12 < length);
|
|
|
|
|
} else {
|
|
|
|
|
match_len = 0;
|
|
|
|
|
// Unroll the potential first two loops.
|
|
|
|
|
if (length >= 4 &&
|
|
|
|
|
_mm_movemask_epi8(_mm_cmpeq_epi32(
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array1[0]),
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array2[0]))) == 0xffff) {
|
|
|
|
|
match_len = 4;
|
|
|
|
|
if (length >= 8 &&
|
|
|
|
|
_mm_movemask_epi8(_mm_cmpeq_epi32(
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array1[4]),
|
|
|
|
|
_mm_loadu_si128((const __m128i*)&array2[4]))) == 0xffff) {
|
|
|
|
|
match_len = 8;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (match_len < length && array1[match_len] == array2[match_len]) {
|
|
|
|
|
++match_len;
|
|
|
|
|
}
|
|
|
|
|
return match_len;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Bundles multiple (1, 2, 4 or 8) pixels into a single pixel.
|
|
|
|
|
static void BundleColorMap_SSE2(const uint8_t* const row, int width, int xbits,
|
|
|
|
|
uint32_t* dst) {
|
|
|
|
|
int x;
|
|
|
|
|
assert(xbits >= 0);
|
|
|
|
|
assert(xbits <= 3);
|
|
|
|
|
switch (xbits) {
|
|
|
|
|
case 0: {
|
2019-10-07 20:56:30 +00:00
|
|
|
const __m128i ff = _mm_set1_epi16((short)0xff00);
|
2019-08-20 19:24:22 +00:00
|
|
|
const __m128i zero = _mm_setzero_si128();
|
|
|
|
|
// Store 0xff000000 | (row[x] << 8).
|
|
|
|
|
for (x = 0; x + 16 <= width; x += 16, dst += 16) {
|
|
|
|
|
const __m128i in = _mm_loadu_si128((const __m128i*)&row[x]);
|
|
|
|
|
const __m128i in_lo = _mm_unpacklo_epi8(zero, in);
|
|
|
|
|
const __m128i dst0 = _mm_unpacklo_epi16(in_lo, ff);
|
|
|
|
|
const __m128i dst1 = _mm_unpackhi_epi16(in_lo, ff);
|
|
|
|
|
const __m128i in_hi = _mm_unpackhi_epi8(zero, in);
|
|
|
|
|
const __m128i dst2 = _mm_unpacklo_epi16(in_hi, ff);
|
|
|
|
|
const __m128i dst3 = _mm_unpackhi_epi16(in_hi, ff);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[0], dst0);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[4], dst1);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[8], dst2);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[12], dst3);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case 1: {
|
2019-10-07 20:56:30 +00:00
|
|
|
const __m128i ff = _mm_set1_epi16((short)0xff00);
|
2019-08-20 19:24:22 +00:00
|
|
|
const __m128i mul = _mm_set1_epi16(0x110);
|
|
|
|
|
for (x = 0; x + 16 <= width; x += 16, dst += 8) {
|
|
|
|
|
// 0a0b | (where a/b are 4 bits).
|
|
|
|
|
const __m128i in = _mm_loadu_si128((const __m128i*)&row[x]);
|
|
|
|
|
const __m128i tmp = _mm_mullo_epi16(in, mul); // aba0
|
|
|
|
|
const __m128i pack = _mm_and_si128(tmp, ff); // ab00
|
|
|
|
|
const __m128i dst0 = _mm_unpacklo_epi16(pack, ff);
|
|
|
|
|
const __m128i dst1 = _mm_unpackhi_epi16(pack, ff);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[0], dst0);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&dst[4], dst1);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
case 2: {
|
|
|
|
|
const __m128i mask_or = _mm_set1_epi32(0xff000000);
|
|
|
|
|
const __m128i mul_cst = _mm_set1_epi16(0x0104);
|
|
|
|
|
const __m128i mask_mul = _mm_set1_epi16(0x0f00);
|
|
|
|
|
for (x = 0; x + 16 <= width; x += 16, dst += 4) {
|
|
|
|
|
// 000a000b000c000d | (where a/b/c/d are 2 bits).
|
|
|
|
|
const __m128i in = _mm_loadu_si128((const __m128i*)&row[x]);
|
|
|
|
|
const __m128i mul = _mm_mullo_epi16(in, mul_cst); // 00ab00b000cd00d0
|
|
|
|
|
const __m128i tmp = _mm_and_si128(mul, mask_mul); // 00ab000000cd0000
|
|
|
|
|
const __m128i shift = _mm_srli_epi32(tmp, 12); // 00000000ab000000
|
|
|
|
|
const __m128i pack = _mm_or_si128(shift, tmp); // 00000000abcd0000
|
|
|
|
|
// Convert to 0xff00**00.
|
|
|
|
|
const __m128i res = _mm_or_si128(pack, mask_or);
|
|
|
|
|
_mm_storeu_si128((__m128i*)dst, res);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
default: {
|
|
|
|
|
assert(xbits == 3);
|
|
|
|
|
for (x = 0; x + 16 <= width; x += 16, dst += 2) {
|
|
|
|
|
// 0000000a00000000b... | (where a/b are 1 bit).
|
|
|
|
|
const __m128i in = _mm_loadu_si128((const __m128i*)&row[x]);
|
|
|
|
|
const __m128i shift = _mm_slli_epi64(in, 7);
|
|
|
|
|
const uint32_t move = _mm_movemask_epi8(shift);
|
|
|
|
|
dst[0] = 0xff000000 | ((move & 0xff) << 8);
|
|
|
|
|
dst[1] = 0xff000000 | (move & 0xff00);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (x != width) {
|
|
|
|
|
VP8LBundleColorMap_C(row + x, width - x, xbits, dst);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
|
// Batch version of Predictor Transform subtraction
|
|
|
|
|
|
|
|
|
|
static WEBP_INLINE void Average2_m128i(const __m128i* const a0,
|
|
|
|
|
const __m128i* const a1,
|
|
|
|
|
__m128i* const avg) {
|
|
|
|
|
// (a + b) >> 1 = ((a + b + 1) >> 1) - ((a ^ b) & 1)
|
|
|
|
|
const __m128i ones = _mm_set1_epi8(1);
|
|
|
|
|
const __m128i avg1 = _mm_avg_epu8(*a0, *a1);
|
|
|
|
|
const __m128i one = _mm_and_si128(_mm_xor_si128(*a0, *a1), ones);
|
|
|
|
|
*avg = _mm_sub_epi8(avg1, one);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Predictor0: ARGB_BLACK.
|
|
|
|
|
static void PredictorSub0_SSE2(const uint32_t* in, const uint32_t* upper,
|
|
|
|
|
int num_pixels, uint32_t* out) {
|
|
|
|
|
int i;
|
|
|
|
|
const __m128i black = _mm_set1_epi32(ARGB_BLACK);
|
|
|
|
|
for (i = 0; i + 4 <= num_pixels; i += 4) {
|
|
|
|
|
const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);
|
|
|
|
|
const __m128i res = _mm_sub_epi8(src, black);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&out[i], res);
|
|
|
|
|
}
|
|
|
|
|
if (i != num_pixels) {
|
|
|
|
|
VP8LPredictorsSub_C[0](in + i, upper + i, num_pixels - i, out + i);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define GENERATE_PREDICTOR_1(X, IN) \
|
|
|
|
|
static void PredictorSub##X##_SSE2(const uint32_t* in, const uint32_t* upper, \
|
|
|
|
|
int num_pixels, uint32_t* out) { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i + 4 <= num_pixels; i += 4) { \
|
|
|
|
|
const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]); \
|
|
|
|
|
const __m128i pred = _mm_loadu_si128((const __m128i*)&(IN)); \
|
|
|
|
|
const __m128i res = _mm_sub_epi8(src, pred); \
|
|
|
|
|
_mm_storeu_si128((__m128i*)&out[i], res); \
|
|
|
|
|
} \
|
|
|
|
|
if (i != num_pixels) { \
|
|
|
|
|
VP8LPredictorsSub_C[(X)](in + i, upper + i, num_pixels - i, out + i); \
|
|
|
|
|
} \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
GENERATE_PREDICTOR_1(1, in[i - 1]) // Predictor1: L
|
|
|
|
|
GENERATE_PREDICTOR_1(2, upper[i]) // Predictor2: T
|
|
|
|
|
GENERATE_PREDICTOR_1(3, upper[i + 1]) // Predictor3: TR
|
|
|
|
|
GENERATE_PREDICTOR_1(4, upper[i - 1]) // Predictor4: TL
|
|
|
|
|
#undef GENERATE_PREDICTOR_1
|
|
|
|
|
|
|
|
|
|
// Predictor5: avg2(avg2(L, TR), T)
|
|
|
|
|
static void PredictorSub5_SSE2(const uint32_t* in, const uint32_t* upper,
|
|
|
|
|
int num_pixels, uint32_t* out) {
|
|
|
|
|
int i;
|
|
|
|
|
for (i = 0; i + 4 <= num_pixels; i += 4) {
|
|
|
|
|
const __m128i L = _mm_loadu_si128((const __m128i*)&in[i - 1]);
|
|
|
|
|
const __m128i T = _mm_loadu_si128((const __m128i*)&upper[i]);
|
|
|
|
|
const __m128i TR = _mm_loadu_si128((const __m128i*)&upper[i + 1]);
|
|
|
|
|
const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);
|
|
|
|
|
__m128i avg, pred, res;
|
|
|
|
|
Average2_m128i(&L, &TR, &avg);
|
|
|
|
|
Average2_m128i(&avg, &T, &pred);
|
|
|
|
|
res = _mm_sub_epi8(src, pred);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&out[i], res);
|
|
|
|
|
}
|
|
|
|
|
if (i != num_pixels) {
|
|
|
|
|
VP8LPredictorsSub_C[5](in + i, upper + i, num_pixels - i, out + i);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define GENERATE_PREDICTOR_2(X, A, B) \
|
|
|
|
|
static void PredictorSub##X##_SSE2(const uint32_t* in, const uint32_t* upper, \
|
|
|
|
|
int num_pixels, uint32_t* out) { \
|
|
|
|
|
int i; \
|
|
|
|
|
for (i = 0; i + 4 <= num_pixels; i += 4) { \
|
|
|
|
|
const __m128i tA = _mm_loadu_si128((const __m128i*)&(A)); \
|
|
|
|
|
const __m128i tB = _mm_loadu_si128((const __m128i*)&(B)); \
|
|
|
|
|
const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]); \
|
|
|
|
|
__m128i pred, res; \
|
|
|
|
|
Average2_m128i(&tA, &tB, &pred); \
|
|
|
|
|
res = _mm_sub_epi8(src, pred); \
|
|
|
|
|
_mm_storeu_si128((__m128i*)&out[i], res); \
|
|
|
|
|
} \
|
|
|
|
|
if (i != num_pixels) { \
|
|
|
|
|
VP8LPredictorsSub_C[(X)](in + i, upper + i, num_pixels - i, out + i); \
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} \
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}
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GENERATE_PREDICTOR_2(6, in[i - 1], upper[i - 1]) // Predictor6: avg(L, TL)
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GENERATE_PREDICTOR_2(7, in[i - 1], upper[i]) // Predictor7: avg(L, T)
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GENERATE_PREDICTOR_2(8, upper[i - 1], upper[i]) // Predictor8: avg(TL, T)
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GENERATE_PREDICTOR_2(9, upper[i], upper[i + 1]) // Predictor9: average(T, TR)
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#undef GENERATE_PREDICTOR_2
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// Predictor10: avg(avg(L,TL), avg(T, TR)).
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static void PredictorSub10_SSE2(const uint32_t* in, const uint32_t* upper,
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int num_pixels, uint32_t* out) {
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int i;
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for (i = 0; i + 4 <= num_pixels; i += 4) {
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const __m128i L = _mm_loadu_si128((const __m128i*)&in[i - 1]);
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const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);
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const __m128i TL = _mm_loadu_si128((const __m128i*)&upper[i - 1]);
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const __m128i T = _mm_loadu_si128((const __m128i*)&upper[i]);
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const __m128i TR = _mm_loadu_si128((const __m128i*)&upper[i + 1]);
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__m128i avgTTR, avgLTL, avg, res;
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Average2_m128i(&T, &TR, &avgTTR);
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Average2_m128i(&L, &TL, &avgLTL);
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Average2_m128i(&avgTTR, &avgLTL, &avg);
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res = _mm_sub_epi8(src, avg);
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_mm_storeu_si128((__m128i*)&out[i], res);
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}
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if (i != num_pixels) {
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VP8LPredictorsSub_C[10](in + i, upper + i, num_pixels - i, out + i);
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}
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}
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// Predictor11: select.
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static void GetSumAbsDiff32_SSE2(const __m128i* const A, const __m128i* const B,
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__m128i* const out) {
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// We can unpack with any value on the upper 32 bits, provided it's the same
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// on both operands (to that their sum of abs diff is zero). Here we use *A.
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const __m128i A_lo = _mm_unpacklo_epi32(*A, *A);
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const __m128i B_lo = _mm_unpacklo_epi32(*B, *A);
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const __m128i A_hi = _mm_unpackhi_epi32(*A, *A);
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const __m128i B_hi = _mm_unpackhi_epi32(*B, *A);
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const __m128i s_lo = _mm_sad_epu8(A_lo, B_lo);
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const __m128i s_hi = _mm_sad_epu8(A_hi, B_hi);
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*out = _mm_packs_epi32(s_lo, s_hi);
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}
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static void PredictorSub11_SSE2(const uint32_t* in, const uint32_t* upper,
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int num_pixels, uint32_t* out) {
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int i;
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for (i = 0; i + 4 <= num_pixels; i += 4) {
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const __m128i L = _mm_loadu_si128((const __m128i*)&in[i - 1]);
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const __m128i T = _mm_loadu_si128((const __m128i*)&upper[i]);
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const __m128i TL = _mm_loadu_si128((const __m128i*)&upper[i - 1]);
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const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);
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__m128i pa, pb;
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GetSumAbsDiff32_SSE2(&T, &TL, &pa); // pa = sum |T-TL|
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GetSumAbsDiff32_SSE2(&L, &TL, &pb); // pb = sum |L-TL|
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{
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const __m128i mask = _mm_cmpgt_epi32(pb, pa);
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const __m128i A = _mm_and_si128(mask, L);
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const __m128i B = _mm_andnot_si128(mask, T);
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const __m128i pred = _mm_or_si128(A, B); // pred = (L > T)? L : T
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const __m128i res = _mm_sub_epi8(src, pred);
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_mm_storeu_si128((__m128i*)&out[i], res);
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}
|
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}
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|
if (i != num_pixels) {
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VP8LPredictorsSub_C[11](in + i, upper + i, num_pixels - i, out + i);
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|
}
|
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|
}
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|
// Predictor12: ClampedSubSubtractFull.
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|
|
static void PredictorSub12_SSE2(const uint32_t* in, const uint32_t* upper,
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|
|
int num_pixels, uint32_t* out) {
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|
|
int i;
|
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|
|
const __m128i zero = _mm_setzero_si128();
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|
for (i = 0; i + 4 <= num_pixels; i += 4) {
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|
const __m128i src = _mm_loadu_si128((const __m128i*)&in[i]);
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const __m128i L = _mm_loadu_si128((const __m128i*)&in[i - 1]);
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|
|
const __m128i L_lo = _mm_unpacklo_epi8(L, zero);
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|
const __m128i L_hi = _mm_unpackhi_epi8(L, zero);
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|
|
const __m128i T = _mm_loadu_si128((const __m128i*)&upper[i]);
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|
|
const __m128i T_lo = _mm_unpacklo_epi8(T, zero);
|
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|
|
const __m128i T_hi = _mm_unpackhi_epi8(T, zero);
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|
|
const __m128i TL = _mm_loadu_si128((const __m128i*)&upper[i - 1]);
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|
|
const __m128i TL_lo = _mm_unpacklo_epi8(TL, zero);
|
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|
|
const __m128i TL_hi = _mm_unpackhi_epi8(TL, zero);
|
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|
|
const __m128i diff_lo = _mm_sub_epi16(T_lo, TL_lo);
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|
|
const __m128i diff_hi = _mm_sub_epi16(T_hi, TL_hi);
|
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|
|
const __m128i pred_lo = _mm_add_epi16(L_lo, diff_lo);
|
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|
|
const __m128i pred_hi = _mm_add_epi16(L_hi, diff_hi);
|
|
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|
|
const __m128i pred = _mm_packus_epi16(pred_lo, pred_hi);
|
|
|
|
|
const __m128i res = _mm_sub_epi8(src, pred);
|
|
|
|
|
_mm_storeu_si128((__m128i*)&out[i], res);
|
|
|
|
|
}
|
|
|
|
|
if (i != num_pixels) {
|
|
|
|
|
VP8LPredictorsSub_C[12](in + i, upper + i, num_pixels - i, out + i);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Predictors13: ClampedAddSubtractHalf
|
|
|
|
|
static void PredictorSub13_SSE2(const uint32_t* in, const uint32_t* upper,
|
|
|
|
|
int num_pixels, uint32_t* out) {
|
|
|
|
|
int i;
|
|
|
|
|
const __m128i zero = _mm_setzero_si128();
|
|
|
|
|
for (i = 0; i + 2 <= num_pixels; i += 2) {
|
|
|
|
|
// we can only process two pixels at a time
|
|
|
|
|
const __m128i L = _mm_loadl_epi64((const __m128i*)&in[i - 1]);
|
|
|
|
|
const __m128i src = _mm_loadl_epi64((const __m128i*)&in[i]);
|
|
|
|
|
const __m128i T = _mm_loadl_epi64((const __m128i*)&upper[i]);
|
|
|
|
|
const __m128i TL = _mm_loadl_epi64((const __m128i*)&upper[i - 1]);
|
|
|
|
|
const __m128i L_lo = _mm_unpacklo_epi8(L, zero);
|
|
|
|
|
const __m128i T_lo = _mm_unpacklo_epi8(T, zero);
|
|
|
|
|
const __m128i TL_lo = _mm_unpacklo_epi8(TL, zero);
|
|
|
|
|
const __m128i sum = _mm_add_epi16(T_lo, L_lo);
|
|
|
|
|
const __m128i avg = _mm_srli_epi16(sum, 1);
|
|
|
|
|
const __m128i A1 = _mm_sub_epi16(avg, TL_lo);
|
|
|
|
|
const __m128i bit_fix = _mm_cmpgt_epi16(TL_lo, avg);
|
|
|
|
|
const __m128i A2 = _mm_sub_epi16(A1, bit_fix);
|
|
|
|
|
const __m128i A3 = _mm_srai_epi16(A2, 1);
|
|
|
|
|
const __m128i A4 = _mm_add_epi16(avg, A3);
|
|
|
|
|
const __m128i pred = _mm_packus_epi16(A4, A4);
|
|
|
|
|
const __m128i res = _mm_sub_epi8(src, pred);
|
|
|
|
|
_mm_storel_epi64((__m128i*)&out[i], res);
|
|
|
|
|
}
|
|
|
|
|
if (i != num_pixels) {
|
|
|
|
|
VP8LPredictorsSub_C[13](in + i, upper + i, num_pixels - i, out + i);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
|
// Entry point
|
|
|
|
|
|
|
|
|
|
extern void VP8LEncDspInitSSE2(void);
|
|
|
|
|
|
|
|
|
|
WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitSSE2(void) {
|
|
|
|
|
VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed_SSE2;
|
|
|
|
|
VP8LTransformColor = TransformColor_SSE2;
|
|
|
|
|
VP8LCollectColorBlueTransforms = CollectColorBlueTransforms_SSE2;
|
|
|
|
|
VP8LCollectColorRedTransforms = CollectColorRedTransforms_SSE2;
|
|
|
|
|
VP8LAddVector = AddVector_SSE2;
|
|
|
|
|
VP8LAddVectorEq = AddVectorEq_SSE2;
|
|
|
|
|
VP8LCombinedShannonEntropy = CombinedShannonEntropy_SSE2;
|
|
|
|
|
VP8LVectorMismatch = VectorMismatch_SSE2;
|
|
|
|
|
VP8LBundleColorMap = BundleColorMap_SSE2;
|
|
|
|
|
|
|
|
|
|
VP8LPredictorsSub[0] = PredictorSub0_SSE2;
|
|
|
|
|
VP8LPredictorsSub[1] = PredictorSub1_SSE2;
|
|
|
|
|
VP8LPredictorsSub[2] = PredictorSub2_SSE2;
|
|
|
|
|
VP8LPredictorsSub[3] = PredictorSub3_SSE2;
|
|
|
|
|
VP8LPredictorsSub[4] = PredictorSub4_SSE2;
|
|
|
|
|
VP8LPredictorsSub[5] = PredictorSub5_SSE2;
|
|
|
|
|
VP8LPredictorsSub[6] = PredictorSub6_SSE2;
|
|
|
|
|
VP8LPredictorsSub[7] = PredictorSub7_SSE2;
|
|
|
|
|
VP8LPredictorsSub[8] = PredictorSub8_SSE2;
|
|
|
|
|
VP8LPredictorsSub[9] = PredictorSub9_SSE2;
|
|
|
|
|
VP8LPredictorsSub[10] = PredictorSub10_SSE2;
|
|
|
|
|
VP8LPredictorsSub[11] = PredictorSub11_SSE2;
|
|
|
|
|
VP8LPredictorsSub[12] = PredictorSub12_SSE2;
|
|
|
|
|
VP8LPredictorsSub[13] = PredictorSub13_SSE2;
|
|
|
|
|
VP8LPredictorsSub[14] = PredictorSub0_SSE2; // <- padding security sentinels
|
|
|
|
|
VP8LPredictorsSub[15] = PredictorSub0_SSE2;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#else // !WEBP_USE_SSE2
|
|
|
|
|
|
|
|
|
|
WEBP_DSP_INIT_STUB(VP8LEncDspInitSSE2)
|
|
|
|
|
|
|
|
|
|
#endif // WEBP_USE_SSE2
|
