1// Copyright 2020 The libgav1 Authors 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15// Constants used for cdef implementations. 16// This will be included inside an anonymous namespace on files where these are 17// necessary. 18 19const int8_t (*const kCdefDirections)[2][2] = kCdefDirectionsPadded + 2; 20 21// Mirror values and pad to 16 elements. 22alignas(16) constexpr uint32_t kCdefDivisionTable[] = { 23 840, 420, 280, 210, 168, 140, 120, 105, 24 120, 140, 168, 210, 280, 420, 840, 0}; 25 26// Used when calculating odd |cost[x]| values to mask off unwanted elements. 27// Holds elements 1 3 5 X 5 3 1 X 28alignas(16) constexpr uint32_t kCdefDivisionTableOdd[] = {420, 210, 140, 0, 29 140, 210, 420, 0}; 30