| // Copyright 2019 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 and utility functions used for overlap blend implementations. |
| // This will be included inside an anonymous namespace on files where these are |
| // necessary. |
| |
| // This is a flat array of masks for each block dimension from 2 to 32. The |
| // starting index for each length is length-2. |
| constexpr uint8_t kObmcMask[62] = { |
| // Obmc Mask 2 |
| 45, 64, |
| // Obmc Mask 4 |
| 39, 50, 59, 64, |
| // Obmc Mask 8 |
| 36, 42, 48, 53, 57, 61, 64, 64, |
| // Obmc Mask 16 |
| 34, 37, 40, 43, 46, 49, 52, 54, 56, 58, 60, 61, 64, 64, 64, 64, |
| // Obmc Mask 32 |
| 33, 35, 36, 38, 40, 41, 43, 44, 45, 47, 48, 50, 51, 52, 53, 55, 56, 57, 58, |
| 59, 60, 60, 61, 62, 64, 64, 64, 64, 64, 64, 64, 64}; |
