| /* |
| * Copyright (c) 2017, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <tmmintrin.h> |
| |
| #include "./av1_rtcd.h" |
| #include "av1/common/warped_motion.h" |
| |
| /* This is a modified version of 'warped_filter' from warped_motion.c: |
| * Each coefficient is stored in 8 bits instead of 16 bits |
| * The coefficients are rearranged in the column order 0, 2, 4, 6, 1, 3, 5, 7 |
| |
| This is done in order to avoid overflow: Since the tap with the largest |
| coefficient could be any of taps 2, 3, 4 or 5, we can't use the summation |
| order ((0 + 1) + (4 + 5)) + ((2 + 3) + (6 + 7)) used in the regular |
| convolve functions. |
| |
| Instead, we use the summation order |
| ((0 + 2) + (4 + 6)) + ((1 + 3) + (5 + 7)). |
| The rearrangement of coefficients in this table is so that we can get the |
| coefficients into the correct order more quickly. |
| */ |
| /* clang-format off */ |
| DECLARE_ALIGNED(8, static const int8_t, |
| filter_8bit[WARPEDPIXEL_PREC_SHIFTS * 3 + 1][8]) = { |
| #if WARPEDPIXEL_PREC_BITS == 6 |
| // [-1, 0) |
| { 0, 127, 0, 0, 0, 1, 0, 0}, { 0, 127, 0, 0, -1, 2, 0, 0}, |
| { 1, 127, -1, 0, -3, 4, 0, 0}, { 1, 126, -2, 0, -4, 6, 1, 0}, |
| { 1, 126, -3, 0, -5, 8, 1, 0}, { 1, 125, -4, 0, -6, 11, 1, 0}, |
| { 1, 124, -4, 0, -7, 13, 1, 0}, { 2, 123, -5, 0, -8, 15, 1, 0}, |
| { 2, 122, -6, 0, -9, 18, 1, 0}, { 2, 121, -6, 0, -10, 20, 1, 0}, |
| { 2, 120, -7, 0, -11, 22, 2, 0}, { 2, 119, -8, 0, -12, 25, 2, 0}, |
| { 3, 117, -8, 0, -13, 27, 2, 0}, { 3, 116, -9, 0, -13, 29, 2, 0}, |
| { 3, 114, -10, 0, -14, 32, 3, 0}, { 3, 113, -10, 0, -15, 35, 2, 0}, |
| { 3, 111, -11, 0, -15, 37, 3, 0}, { 3, 109, -11, 0, -16, 40, 3, 0}, |
| { 3, 108, -12, 0, -16, 42, 3, 0}, { 4, 106, -13, 0, -17, 45, 3, 0}, |
| { 4, 104, -13, 0, -17, 47, 3, 0}, { 4, 102, -14, 0, -17, 50, 3, 0}, |
| { 4, 100, -14, 0, -17, 52, 3, 0}, { 4, 98, -15, 0, -18, 55, 4, 0}, |
| { 4, 96, -15, 0, -18, 58, 3, 0}, { 4, 94, -16, 0, -18, 60, 4, 0}, |
| { 4, 91, -16, 0, -18, 63, 4, 0}, { 4, 89, -16, 0, -18, 65, 4, 0}, |
| { 4, 87, -17, 0, -18, 68, 4, 0}, { 4, 85, -17, 0, -18, 70, 4, 0}, |
| { 4, 82, -17, 0, -18, 73, 4, 0}, { 4, 80, -17, 0, -18, 75, 4, 0}, |
| { 4, 78, -18, 0, -18, 78, 4, 0}, { 4, 75, -18, 0, -17, 80, 4, 0}, |
| { 4, 73, -18, 0, -17, 82, 4, 0}, { 4, 70, -18, 0, -17, 85, 4, 0}, |
| { 4, 68, -18, 0, -17, 87, 4, 0}, { 4, 65, -18, 0, -16, 89, 4, 0}, |
| { 4, 63, -18, 0, -16, 91, 4, 0}, { 4, 60, -18, 0, -16, 94, 4, 0}, |
| { 3, 58, -18, 0, -15, 96, 4, 0}, { 4, 55, -18, 0, -15, 98, 4, 0}, |
| { 3, 52, -17, 0, -14, 100, 4, 0}, { 3, 50, -17, 0, -14, 102, 4, 0}, |
| { 3, 47, -17, 0, -13, 104, 4, 0}, { 3, 45, -17, 0, -13, 106, 4, 0}, |
| { 3, 42, -16, 0, -12, 108, 3, 0}, { 3, 40, -16, 0, -11, 109, 3, 0}, |
| { 3, 37, -15, 0, -11, 111, 3, 0}, { 2, 35, -15, 0, -10, 113, 3, 0}, |
| { 3, 32, -14, 0, -10, 114, 3, 0}, { 2, 29, -13, 0, -9, 116, 3, 0}, |
| { 2, 27, -13, 0, -8, 117, 3, 0}, { 2, 25, -12, 0, -8, 119, 2, 0}, |
| { 2, 22, -11, 0, -7, 120, 2, 0}, { 1, 20, -10, 0, -6, 121, 2, 0}, |
| { 1, 18, -9, 0, -6, 122, 2, 0}, { 1, 15, -8, 0, -5, 123, 2, 0}, |
| { 1, 13, -7, 0, -4, 124, 1, 0}, { 1, 11, -6, 0, -4, 125, 1, 0}, |
| { 1, 8, -5, 0, -3, 126, 1, 0}, { 1, 6, -4, 0, -2, 126, 1, 0}, |
| { 0, 4, -3, 0, -1, 127, 1, 0}, { 0, 2, -1, 0, 0, 127, 0, 0}, |
| // [0, 1) |
| { 0, 0, 1, 0, 0, 127, 0, 0}, { 0, -1, 2, 0, 0, 127, 0, 0}, |
| { 0, -3, 4, 1, 1, 127, -2, 0}, { 0, -5, 6, 1, 1, 127, -2, 0}, |
| { 0, -6, 8, 1, 2, 126, -3, 0}, {-1, -7, 11, 2, 2, 126, -4, -1}, |
| {-1, -8, 13, 2, 3, 125, -5, -1}, {-1, -10, 16, 3, 3, 124, -6, -1}, |
| {-1, -11, 18, 3, 4, 123, -7, -1}, {-1, -12, 20, 3, 4, 122, -7, -1}, |
| {-1, -13, 23, 3, 4, 121, -8, -1}, {-2, -14, 25, 4, 5, 120, -9, -1}, |
| {-1, -15, 27, 4, 5, 119, -10, -1}, {-1, -16, 30, 4, 5, 118, -11, -1}, |
| {-2, -17, 33, 5, 6, 116, -12, -1}, {-2, -17, 35, 5, 6, 114, -12, -1}, |
| {-2, -18, 38, 5, 6, 113, -13, -1}, {-2, -19, 41, 6, 7, 111, -14, -2}, |
| {-2, -19, 43, 6, 7, 110, -15, -2}, {-2, -20, 46, 6, 7, 108, -15, -2}, |
| {-2, -20, 49, 6, 7, 106, -16, -2}, {-2, -21, 51, 7, 7, 104, -16, -2}, |
| {-2, -21, 54, 7, 7, 102, -17, -2}, {-2, -21, 56, 7, 8, 100, -18, -2}, |
| {-2, -22, 59, 7, 8, 98, -18, -2}, {-2, -22, 62, 7, 8, 96, -19, -2}, |
| {-2, -22, 64, 7, 8, 94, -19, -2}, {-2, -22, 67, 8, 8, 91, -20, -2}, |
| {-2, -22, 69, 8, 8, 89, -20, -2}, {-2, -22, 72, 8, 8, 87, -21, -2}, |
| {-2, -21, 74, 8, 8, 84, -21, -2}, {-2, -22, 77, 8, 8, 82, -21, -2}, |
| {-2, -21, 79, 8, 8, 79, -21, -2}, {-2, -21, 82, 8, 8, 77, -22, -2}, |
| {-2, -21, 84, 8, 8, 74, -21, -2}, {-2, -21, 87, 8, 8, 72, -22, -2}, |
| {-2, -20, 89, 8, 8, 69, -22, -2}, {-2, -20, 91, 8, 8, 67, -22, -2}, |
| {-2, -19, 94, 8, 7, 64, -22, -2}, {-2, -19, 96, 8, 7, 62, -22, -2}, |
| {-2, -18, 98, 8, 7, 59, -22, -2}, {-2, -18, 100, 8, 7, 56, -21, -2}, |
| {-2, -17, 102, 7, 7, 54, -21, -2}, {-2, -16, 104, 7, 7, 51, -21, -2}, |
| {-2, -16, 106, 7, 6, 49, -20, -2}, {-2, -15, 108, 7, 6, 46, -20, -2}, |
| {-2, -15, 110, 7, 6, 43, -19, -2}, {-2, -14, 111, 7, 6, 41, -19, -2}, |
| {-1, -13, 113, 6, 5, 38, -18, -2}, {-1, -12, 114, 6, 5, 35, -17, -2}, |
| {-1, -12, 116, 6, 5, 33, -17, -2}, {-1, -11, 118, 5, 4, 30, -16, -1}, |
| {-1, -10, 119, 5, 4, 27, -15, -1}, {-1, -9, 120, 5, 4, 25, -14, -2}, |
| {-1, -8, 121, 4, 3, 23, -13, -1}, {-1, -7, 122, 4, 3, 20, -12, -1}, |
| {-1, -7, 123, 4, 3, 18, -11, -1}, {-1, -6, 124, 3, 3, 16, -10, -1}, |
| {-1, -5, 125, 3, 2, 13, -8, -1}, {-1, -4, 126, 2, 2, 11, -7, -1}, |
| { 0, -3, 126, 2, 1, 8, -6, 0}, { 0, -2, 127, 1, 1, 6, -5, 0}, |
| { 0, -2, 127, 1, 1, 4, -3, 0}, { 0, 0, 127, 0, 0, 2, -1, 0}, |
| // [1, 2) |
| { 0, 0, 127, 0, 0, 1, 0, 0}, { 0, 0, 127, 0, 0, -1, 2, 0}, |
| { 0, 1, 127, -1, 0, -3, 4, 0}, { 0, 1, 126, -2, 0, -4, 6, 1}, |
| { 0, 1, 126, -3, 0, -5, 8, 1}, { 0, 1, 125, -4, 0, -6, 11, 1}, |
| { 0, 1, 124, -4, 0, -7, 13, 1}, { 0, 2, 123, -5, 0, -8, 15, 1}, |
| { 0, 2, 122, -6, 0, -9, 18, 1}, { 0, 2, 121, -6, 0, -10, 20, 1}, |
| { 0, 2, 120, -7, 0, -11, 22, 2}, { 0, 2, 119, -8, 0, -12, 25, 2}, |
| { 0, 3, 117, -8, 0, -13, 27, 2}, { 0, 3, 116, -9, 0, -13, 29, 2}, |
| { 0, 3, 114, -10, 0, -14, 32, 3}, { 0, 3, 113, -10, 0, -15, 35, 2}, |
| { 0, 3, 111, -11, 0, -15, 37, 3}, { 0, 3, 109, -11, 0, -16, 40, 3}, |
| { 0, 3, 108, -12, 0, -16, 42, 3}, { 0, 4, 106, -13, 0, -17, 45, 3}, |
| { 0, 4, 104, -13, 0, -17, 47, 3}, { 0, 4, 102, -14, 0, -17, 50, 3}, |
| { 0, 4, 100, -14, 0, -17, 52, 3}, { 0, 4, 98, -15, 0, -18, 55, 4}, |
| { 0, 4, 96, -15, 0, -18, 58, 3}, { 0, 4, 94, -16, 0, -18, 60, 4}, |
| { 0, 4, 91, -16, 0, -18, 63, 4}, { 0, 4, 89, -16, 0, -18, 65, 4}, |
| { 0, 4, 87, -17, 0, -18, 68, 4}, { 0, 4, 85, -17, 0, -18, 70, 4}, |
| { 0, 4, 82, -17, 0, -18, 73, 4}, { 0, 4, 80, -17, 0, -18, 75, 4}, |
| { 0, 4, 78, -18, 0, -18, 78, 4}, { 0, 4, 75, -18, 0, -17, 80, 4}, |
| { 0, 4, 73, -18, 0, -17, 82, 4}, { 0, 4, 70, -18, 0, -17, 85, 4}, |
| { 0, 4, 68, -18, 0, -17, 87, 4}, { 0, 4, 65, -18, 0, -16, 89, 4}, |
| { 0, 4, 63, -18, 0, -16, 91, 4}, { 0, 4, 60, -18, 0, -16, 94, 4}, |
| { 0, 3, 58, -18, 0, -15, 96, 4}, { 0, 4, 55, -18, 0, -15, 98, 4}, |
| { 0, 3, 52, -17, 0, -14, 100, 4}, { 0, 3, 50, -17, 0, -14, 102, 4}, |
| { 0, 3, 47, -17, 0, -13, 104, 4}, { 0, 3, 45, -17, 0, -13, 106, 4}, |
| { 0, 3, 42, -16, 0, -12, 108, 3}, { 0, 3, 40, -16, 0, -11, 109, 3}, |
| { 0, 3, 37, -15, 0, -11, 111, 3}, { 0, 2, 35, -15, 0, -10, 113, 3}, |
| { 0, 3, 32, -14, 0, -10, 114, 3}, { 0, 2, 29, -13, 0, -9, 116, 3}, |
| { 0, 2, 27, -13, 0, -8, 117, 3}, { 0, 2, 25, -12, 0, -8, 119, 2}, |
| { 0, 2, 22, -11, 0, -7, 120, 2}, { 0, 1, 20, -10, 0, -6, 121, 2}, |
| { 0, 1, 18, -9, 0, -6, 122, 2}, { 0, 1, 15, -8, 0, -5, 123, 2}, |
| { 0, 1, 13, -7, 0, -4, 124, 1}, { 0, 1, 11, -6, 0, -4, 125, 1}, |
| { 0, 1, 8, -5, 0, -3, 126, 1}, { 0, 1, 6, -4, 0, -2, 126, 1}, |
| { 0, 0, 4, -3, 0, -1, 127, 1}, { 0, 0, 2, -1, 0, 0, 127, 0}, |
| // dummy (replicate row index 191) |
| { 0, 0, 2, -1, 0, 0, 127, 0}, |
| |
| #else |
| // [-1, 0) |
| { 0, 127, 0, 0, 0, 1, 0, 0}, { 1, 127, -1, 0, -3, 4, 0, 0}, |
| { 1, 126, -3, 0, -5, 8, 1, 0}, { 1, 124, -4, 0, -7, 13, 1, 0}, |
| { 2, 122, -6, 0, -9, 18, 1, 0}, { 2, 120, -7, 0, -11, 22, 2, 0}, |
| { 3, 117, -8, 0, -13, 27, 2, 0}, { 3, 114, -10, 0, -14, 32, 3, 0}, |
| { 3, 111, -11, 0, -15, 37, 3, 0}, { 3, 108, -12, 0, -16, 42, 3, 0}, |
| { 4, 104, -13, 0, -17, 47, 3, 0}, { 4, 100, -14, 0, -17, 52, 3, 0}, |
| { 4, 96, -15, 0, -18, 58, 3, 0}, { 4, 91, -16, 0, -18, 63, 4, 0}, |
| { 4, 87, -17, 0, -18, 68, 4, 0}, { 4, 82, -17, 0, -18, 73, 4, 0}, |
| { 4, 78, -18, 0, -18, 78, 4, 0}, { 4, 73, -18, 0, -17, 82, 4, 0}, |
| { 4, 68, -18, 0, -17, 87, 4, 0}, { 4, 63, -18, 0, -16, 91, 4, 0}, |
| { 3, 58, -18, 0, -15, 96, 4, 0}, { 3, 52, -17, 0, -14, 100, 4, 0}, |
| { 3, 47, -17, 0, -13, 104, 4, 0}, { 3, 42, -16, 0, -12, 108, 3, 0}, |
| { 3, 37, -15, 0, -11, 111, 3, 0}, { 3, 32, -14, 0, -10, 114, 3, 0}, |
| { 2, 27, -13, 0, -8, 117, 3, 0}, { 2, 22, -11, 0, -7, 120, 2, 0}, |
| { 1, 18, -9, 0, -6, 122, 2, 0}, { 1, 13, -7, 0, -4, 124, 1, 0}, |
| { 1, 8, -5, 0, -3, 126, 1, 0}, { 0, 4, -3, 0, -1, 127, 1, 0}, |
| // [0, 1) |
| { 0, 0, 1, 0, 0, 127, 0, 0}, { 0, -3, 4, 1, 1, 127, -2, 0}, |
| { 0, -6, 8, 1, 2, 126, -3, 0}, {-1, -8, 13, 2, 3, 125, -5, -1}, |
| {-1, -11, 18, 3, 4, 123, -7, -1}, {-1, -13, 23, 3, 4, 121, -8, -1}, |
| {-1, -15, 27, 4, 5, 119, -10, -1}, {-2, -17, 33, 5, 6, 116, -12, -1}, |
| {-2, -18, 38, 5, 6, 113, -13, -1}, {-2, -19, 43, 6, 7, 110, -15, -2}, |
| {-2, -20, 49, 6, 7, 106, -16, -2}, {-2, -21, 54, 7, 7, 102, -17, -2}, |
| {-2, -22, 59, 7, 8, 98, -18, -2}, {-2, -22, 64, 7, 8, 94, -19, -2}, |
| {-2, -22, 69, 8, 8, 89, -20, -2}, {-2, -21, 74, 8, 8, 84, -21, -2}, |
| {-2, -21, 79, 8, 8, 79, -21, -2}, {-2, -21, 84, 8, 8, 74, -21, -2}, |
| {-2, -20, 89, 8, 8, 69, -22, -2}, {-2, -19, 94, 8, 7, 64, -22, -2}, |
| {-2, -18, 98, 8, 7, 59, -22, -2}, {-2, -17, 102, 7, 7, 54, -21, -2}, |
| {-2, -16, 106, 7, 6, 49, -20, -2}, {-2, -15, 110, 7, 6, 43, -19, -2}, |
| {-1, -13, 113, 6, 5, 38, -18, -2}, {-1, -12, 116, 6, 5, 33, -17, -2}, |
| {-1, -10, 119, 5, 4, 27, -15, -1}, {-1, -8, 121, 4, 3, 23, -13, -1}, |
| {-1, -7, 123, 4, 3, 18, -11, -1}, {-1, -5, 125, 3, 2, 13, -8, -1}, |
| { 0, -3, 126, 2, 1, 8, -6, 0}, { 0, -2, 127, 1, 1, 4, -3, 0}, |
| // [1, 2) |
| { 0, 0, 127, 0, 0, 1, 0, 0}, { 0, 1, 127, -1, 0, -3, 4, 0}, |
| { 0, 1, 126, -3, 0, -5, 8, 1}, { 0, 1, 124, -4, 0, -7, 13, 1}, |
| { 0, 2, 122, -6, 0, -9, 18, 1}, { 0, 2, 120, -7, 0, -11, 22, 2}, |
| { 0, 3, 117, -8, 0, -13, 27, 2}, { 0, 3, 114, -10, 0, -14, 32, 3}, |
| { 0, 3, 111, -11, 0, -15, 37, 3}, { 0, 3, 108, -12, 0, -16, 42, 3}, |
| { 0, 4, 104, -13, 0, -17, 47, 3}, { 0, 4, 100, -14, 0, -17, 52, 3}, |
| { 0, 4, 96, -15, 0, -18, 58, 3}, { 0, 4, 91, -16, 0, -18, 63, 4}, |
| { 0, 4, 87, -17, 0, -18, 68, 4}, { 0, 4, 82, -17, 0, -18, 73, 4}, |
| { 0, 4, 78, -18, 0, -18, 78, 4}, { 0, 4, 73, -18, 0, -17, 82, 4}, |
| { 0, 4, 68, -18, 0, -17, 87, 4}, { 0, 4, 63, -18, 0, -16, 91, 4}, |
| { 0, 3, 58, -18, 0, -15, 96, 4}, { 0, 3, 52, -17, 0, -14, 100, 4}, |
| { 0, 3, 47, -17, 0, -13, 104, 4}, { 0, 3, 42, -16, 0, -12, 108, 3}, |
| { 0, 3, 37, -15, 0, -11, 111, 3}, { 0, 3, 32, -14, 0, -10, 114, 3}, |
| { 0, 2, 27, -13, 0, -8, 117, 3}, { 0, 2, 22, -11, 0, -7, 120, 2}, |
| { 0, 1, 18, -9, 0, -6, 122, 2}, { 0, 1, 13, -7, 0, -4, 124, 1}, |
| { 0, 1, 8, -5, 0, -3, 126, 1}, { 0, 0, 4, -3, 0, -1, 127, 1}, |
| // dummy (replicate row index 95) |
| { 0, 0, 4, -3, 0, -1, 127, 1}, |
| #endif // WARPEDPIXEL_PREC_BITS == 6 |
| }; |
| /* clang-format on */ |
| |
| // Shuffle masks: we want to convert a sequence of bytes 0, 1, 2, ..., 15 |
| // in an SSE register into two sequences: |
| // 0, 2, 2, 4, ..., 12, 12, 14, <don't care> |
| // 1, 3, 3, 5, ..., 13, 13, 15, <don't care> |
| static const uint8_t even_mask[16] = { 0, 2, 2, 4, 4, 6, 6, 8, |
| 8, 10, 10, 12, 12, 14, 14, 0 }; |
| static const uint8_t odd_mask[16] = { 1, 3, 3, 5, 5, 7, 7, 9, |
| 9, 11, 11, 13, 13, 15, 15, 0 }; |
| |
| /* SSSE3 version of the rotzoom/affine warp filter */ |
| void av1_warp_affine_ssse3(const int32_t *mat, const uint8_t *ref, int width, |
| int height, int stride, uint8_t *pred, int p_col, |
| int p_row, int p_width, int p_height, int p_stride, |
| int subsampling_x, int subsampling_y, int comp_avg, |
| int16_t alpha, int16_t beta, int16_t gamma, |
| int16_t delta) { |
| __m128i tmp[15]; |
| int i, j, k; |
| |
| /* Note: For this code to work, the left/right frame borders need to be |
| extended by at least 13 pixels each. By the time we get here, other |
| code will have set up this border, but we allow an explicit check |
| for debugging purposes. |
| */ |
| /*for (i = 0; i < height; ++i) { |
| for (j = 0; j < 13; ++j) { |
| assert(ref[i * stride - 13 + j] == ref[i * stride]); |
| assert(ref[i * stride + width + j] == ref[i * stride + (width - 1)]); |
| } |
| }*/ |
| |
| for (i = 0; i < p_height; i += 8) { |
| for (j = 0; j < p_width; j += 8) { |
| // (x, y) coordinates of the center of this block in the destination |
| // image |
| const int32_t dst_x = p_col + j + 4; |
| const int32_t dst_y = p_row + i + 4; |
| |
| int32_t x4, y4, ix4, sx4, iy4, sy4; |
| if (subsampling_x) |
| x4 = (mat[2] * 4 * dst_x + mat[3] * 4 * dst_y + mat[0] * 2 + |
| (mat[2] + mat[3] - (1 << WARPEDMODEL_PREC_BITS))) / |
| 4; |
| else |
| x4 = mat[2] * dst_x + mat[3] * dst_y + mat[0]; |
| |
| if (subsampling_y) |
| y4 = (mat[4] * 4 * dst_x + mat[5] * 4 * dst_y + mat[1] * 2 + |
| (mat[4] + mat[5] - (1 << WARPEDMODEL_PREC_BITS))) / |
| 4; |
| else |
| y4 = mat[4] * dst_x + mat[5] * dst_y + mat[1]; |
| |
| ix4 = x4 >> WARPEDMODEL_PREC_BITS; |
| sx4 = x4 & ((1 << WARPEDMODEL_PREC_BITS) - 1); |
| iy4 = y4 >> WARPEDMODEL_PREC_BITS; |
| sy4 = y4 & ((1 << WARPEDMODEL_PREC_BITS) - 1); |
| |
| // Add in all the constant terms, including rounding and offset |
| sx4 += alpha * (-4) + beta * (-4) + (1 << (WARPEDDIFF_PREC_BITS - 1)) + |
| (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS); |
| sy4 += gamma * (-4) + delta * (-4) + (1 << (WARPEDDIFF_PREC_BITS - 1)) + |
| (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS); |
| |
| sx4 &= ~((1 << WARP_PARAM_REDUCE_BITS) - 1); |
| sy4 &= ~((1 << WARP_PARAM_REDUCE_BITS) - 1); |
| |
| // Horizontal filter |
| // If the block is aligned such that, after clamping, every sample |
| // would be taken from the leftmost/rightmost column, then we can |
| // skip the expensive horizontal filter. |
| if (ix4 <= -7) { |
| for (k = -7; k < AOMMIN(8, p_height - i); ++k) { |
| int iy = iy4 + k; |
| if (iy < 0) |
| iy = 0; |
| else if (iy > height - 1) |
| iy = height - 1; |
| tmp[k + 7] = _mm_set1_epi16( |
| ref[iy * stride] * |
| (1 << (WARPEDPIXEL_FILTER_BITS - HORSHEAR_REDUCE_PREC_BITS))); |
| } |
| } else if (ix4 >= width + 6) { |
| for (k = -7; k < AOMMIN(8, p_height - i); ++k) { |
| int iy = iy4 + k; |
| if (iy < 0) |
| iy = 0; |
| else if (iy > height - 1) |
| iy = height - 1; |
| tmp[k + 7] = _mm_set1_epi16( |
| ref[iy * stride + (width - 1)] * |
| (1 << (WARPEDPIXEL_FILTER_BITS - HORSHEAR_REDUCE_PREC_BITS))); |
| } |
| } else { |
| for (k = -7; k < AOMMIN(8, p_height - i); ++k) { |
| int iy = iy4 + k; |
| if (iy < 0) |
| iy = 0; |
| else if (iy > height - 1) |
| iy = height - 1; |
| int sx = sx4 + beta * (k + 4); |
| |
| // Load source pixels |
| const __m128i src = |
| _mm_loadu_si128((__m128i *)(ref + iy * stride + ix4 - 7)); |
| const __m128i src_even = |
| _mm_shuffle_epi8(src, _mm_loadu_si128((__m128i *)even_mask)); |
| const __m128i src_odd = |
| _mm_shuffle_epi8(src, _mm_loadu_si128((__m128i *)odd_mask)); |
| |
| // Filter even-index pixels |
| const __m128i tmp_0 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 0 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_1 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 1 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_2 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 2 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_3 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 3 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_4 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 4 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_5 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 5 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_6 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 6 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| const __m128i tmp_7 = _mm_loadl_epi64(( |
| __m128i *)&filter_8bit[(sx + 7 * alpha) >> WARPEDDIFF_PREC_BITS]); |
| |
| // Coeffs 0 2 0 2 4 6 4 6 1 3 1 3 5 7 5 7 for pixels 0 2 |
| const __m128i tmp_8 = _mm_unpacklo_epi16(tmp_0, tmp_2); |
| // Coeffs 0 2 0 2 4 6 4 6 1 3 1 3 5 7 5 7 for pixels 1 3 |
| const __m128i tmp_9 = _mm_unpacklo_epi16(tmp_1, tmp_3); |
| // Coeffs 0 2 0 2 4 6 4 6 1 3 1 3 5 7 5 7 for pixels 4 6 |
| const __m128i tmp_10 = _mm_unpacklo_epi16(tmp_4, tmp_6); |
| // Coeffs 0 2 0 2 4 6 4 6 1 3 1 3 5 7 5 7 for pixels 5 7 |
| const __m128i tmp_11 = _mm_unpacklo_epi16(tmp_5, tmp_7); |
| |
| // Coeffs 0 2 0 2 0 2 0 2 4 6 4 6 4 6 4 6 for pixels 0 2 4 6 |
| const __m128i tmp_12 = _mm_unpacklo_epi32(tmp_8, tmp_10); |
| // Coeffs 1 3 1 3 1 3 1 3 5 7 5 7 5 7 5 7 for pixels 0 2 4 6 |
| const __m128i tmp_13 = _mm_unpackhi_epi32(tmp_8, tmp_10); |
| // Coeffs 0 2 0 2 0 2 0 2 4 6 4 6 4 6 4 6 for pixels 1 3 5 7 |
| const __m128i tmp_14 = _mm_unpacklo_epi32(tmp_9, tmp_11); |
| // Coeffs 1 3 1 3 1 3 1 3 5 7 5 7 5 7 5 7 for pixels 1 3 5 7 |
| const __m128i tmp_15 = _mm_unpackhi_epi32(tmp_9, tmp_11); |
| |
| // Coeffs 0 2 for pixels 0 2 4 6 1 3 5 7 |
| const __m128i coeff_02 = _mm_unpacklo_epi64(tmp_12, tmp_14); |
| // Coeffs 4 6 for pixels 0 2 4 6 1 3 5 7 |
| const __m128i coeff_46 = _mm_unpackhi_epi64(tmp_12, tmp_14); |
| // Coeffs 1 3 for pixels 0 2 4 6 1 3 5 7 |
| const __m128i coeff_13 = _mm_unpacklo_epi64(tmp_13, tmp_15); |
| // Coeffs 5 7 for pixels 0 2 4 6 1 3 5 7 |
| const __m128i coeff_57 = _mm_unpackhi_epi64(tmp_13, tmp_15); |
| |
| // The pixel order we need for 'src' is: |
| // 0 2 2 4 4 6 6 8 1 3 3 5 5 7 7 9 |
| const __m128i src_02 = _mm_unpacklo_epi64(src_even, src_odd); |
| const __m128i res_02 = _mm_maddubs_epi16(src_02, coeff_02); |
| // 4 6 6 8 8 10 10 12 5 7 7 9 9 11 11 13 |
| const __m128i src_46 = _mm_unpacklo_epi64(_mm_srli_si128(src_even, 4), |
| _mm_srli_si128(src_odd, 4)); |
| const __m128i res_46 = _mm_maddubs_epi16(src_46, coeff_46); |
| // 1 3 3 5 5 7 7 9 2 4 4 6 6 8 8 10 |
| const __m128i src_13 = |
| _mm_unpacklo_epi64(src_odd, _mm_srli_si128(src_even, 2)); |
| const __m128i res_13 = _mm_maddubs_epi16(src_13, coeff_13); |
| // 5 7 7 9 9 11 11 13 6 8 8 10 10 12 12 14 |
| const __m128i src_57 = _mm_unpacklo_epi64( |
| _mm_srli_si128(src_odd, 4), _mm_srli_si128(src_even, 6)); |
| const __m128i res_57 = _mm_maddubs_epi16(src_57, coeff_57); |
| |
| const __m128i round_const = |
| _mm_set1_epi16((1 << HORSHEAR_REDUCE_PREC_BITS) >> 1); |
| |
| // Note: res_02 + res_46 and res_13 + res_57 are always in the range |
| // [-6120, 32640]. This gives us enough room to add the rounding |
| // constant to res_a, *as long as HORSHEAR_REDUCE_PREC_BITS <= 6* |
| const __m128i res_a = |
| _mm_add_epi16(_mm_add_epi16(res_02, res_46), round_const); |
| const __m128i res_b = _mm_add_epi16(res_13, res_57); |
| |
| // Calculate (res_a + res_b) >> 1 while avoiding overflow |
| const __m128i t1 = _mm_and_si128(res_a, res_b); |
| const __m128i t2 = _mm_srai_epi16(_mm_xor_si128(res_a, res_b), 1); |
| |
| const __m128i res = _mm_srai_epi16(_mm_add_epi16(t1, t2), |
| HORSHEAR_REDUCE_PREC_BITS - 1); |
| tmp[k + 7] = res; |
| } |
| } |
| |
| // Vertical filter |
| for (k = -4; k < AOMMIN(4, p_height - i - 4); ++k) { |
| int sy = sy4 + delta * (k + 4); |
| |
| // Load from tmp and rearrange pairs of consecutive rows into the |
| // column order 0 0 2 2 4 4 6 6; 1 1 3 3 5 5 7 7 |
| const __m128i *src = tmp + (k + 4); |
| const __m128i src_0 = _mm_unpacklo_epi16(src[0], src[1]); |
| const __m128i src_2 = _mm_unpacklo_epi16(src[2], src[3]); |
| const __m128i src_4 = _mm_unpacklo_epi16(src[4], src[5]); |
| const __m128i src_6 = _mm_unpacklo_epi16(src[6], src[7]); |
| |
| // Filter even-index pixels |
| const __m128i tmp_0 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 0 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_2 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 2 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_4 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 4 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_6 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 6 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| |
| const __m128i tmp_8 = _mm_unpacklo_epi32(tmp_0, tmp_2); |
| const __m128i tmp_10 = _mm_unpacklo_epi32(tmp_4, tmp_6); |
| const __m128i tmp_12 = _mm_unpackhi_epi32(tmp_0, tmp_2); |
| const __m128i tmp_14 = _mm_unpackhi_epi32(tmp_4, tmp_6); |
| |
| const __m128i coeff_0 = _mm_unpacklo_epi64(tmp_8, tmp_10); |
| const __m128i coeff_2 = _mm_unpackhi_epi64(tmp_8, tmp_10); |
| const __m128i coeff_4 = _mm_unpacklo_epi64(tmp_12, tmp_14); |
| const __m128i coeff_6 = _mm_unpackhi_epi64(tmp_12, tmp_14); |
| |
| const __m128i res_0 = _mm_madd_epi16(src_0, coeff_0); |
| const __m128i res_2 = _mm_madd_epi16(src_2, coeff_2); |
| const __m128i res_4 = _mm_madd_epi16(src_4, coeff_4); |
| const __m128i res_6 = _mm_madd_epi16(src_6, coeff_6); |
| |
| const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2), |
| _mm_add_epi32(res_4, res_6)); |
| |
| // Filter odd-index pixels |
| const __m128i src_1 = _mm_unpackhi_epi16(src[0], src[1]); |
| const __m128i src_3 = _mm_unpackhi_epi16(src[2], src[3]); |
| const __m128i src_5 = _mm_unpackhi_epi16(src[4], src[5]); |
| const __m128i src_7 = _mm_unpackhi_epi16(src[6], src[7]); |
| |
| const __m128i tmp_1 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 1 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_3 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 3 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_5 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 5 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| const __m128i tmp_7 = _mm_loadu_si128( |
| (__m128i *)(warped_filter + |
| ((sy + 7 * gamma) >> WARPEDDIFF_PREC_BITS))); |
| |
| const __m128i tmp_9 = _mm_unpacklo_epi32(tmp_1, tmp_3); |
| const __m128i tmp_11 = _mm_unpacklo_epi32(tmp_5, tmp_7); |
| const __m128i tmp_13 = _mm_unpackhi_epi32(tmp_1, tmp_3); |
| const __m128i tmp_15 = _mm_unpackhi_epi32(tmp_5, tmp_7); |
| |
| const __m128i coeff_1 = _mm_unpacklo_epi64(tmp_9, tmp_11); |
| const __m128i coeff_3 = _mm_unpackhi_epi64(tmp_9, tmp_11); |
| const __m128i coeff_5 = _mm_unpacklo_epi64(tmp_13, tmp_15); |
| const __m128i coeff_7 = _mm_unpackhi_epi64(tmp_13, tmp_15); |
| |
| const __m128i res_1 = _mm_madd_epi16(src_1, coeff_1); |
| const __m128i res_3 = _mm_madd_epi16(src_3, coeff_3); |
| const __m128i res_5 = _mm_madd_epi16(src_5, coeff_5); |
| const __m128i res_7 = _mm_madd_epi16(src_7, coeff_7); |
| |
| const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3), |
| _mm_add_epi32(res_5, res_7)); |
| |
| // Rearrange pixels back into the order 0 ... 7 |
| const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd); |
| const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd); |
| |
| // Round and pack into 8 bits |
| const __m128i round_const = |
| _mm_set1_epi32((1 << VERSHEAR_REDUCE_PREC_BITS) >> 1); |
| |
| const __m128i res_lo_round = _mm_srai_epi32( |
| _mm_add_epi32(res_lo, round_const), VERSHEAR_REDUCE_PREC_BITS); |
| const __m128i res_hi_round = _mm_srai_epi32( |
| _mm_add_epi32(res_hi, round_const), VERSHEAR_REDUCE_PREC_BITS); |
| |
| const __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round); |
| __m128i res_8bit = _mm_packus_epi16(res_16bit, res_16bit); |
| |
| // Store, blending with 'pred' if needed |
| __m128i *const p = (__m128i *)&pred[(i + k + 4) * p_stride + j]; |
| |
| // Note: If we're outputting a 4x4 block, we need to be very careful |
| // to only output 4 pixels at this point, to avoid encode/decode |
| // mismatches when encoding with multiple threads. |
| if (p_width == 4) { |
| if (comp_avg) { |
| const __m128i orig = _mm_cvtsi32_si128(*(uint32_t *)p); |
| res_8bit = _mm_avg_epu8(res_8bit, orig); |
| } |
| *(uint32_t *)p = _mm_cvtsi128_si32(res_8bit); |
| } else { |
| if (comp_avg) res_8bit = _mm_avg_epu8(res_8bit, _mm_loadl_epi64(p)); |
| _mm_storel_epi64(p, res_8bit); |
| } |
| } |
| } |
| } |
| } |
