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