| // 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. |
| |
| // Thresholds for the deblocking filter. Precomputed values of part of Section |
| // 7.14.4 for all possible values of sharpness. |
| |
| constexpr uint8_t kInnerThresh[8][kMaxLoopFilterValue + 1] = { |
| {1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
| 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
| 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63}, |
| {1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, |
| 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, |
| 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8}, |
| {1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, |
| 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, |
| 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7}, |
| {1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6}, |
| {1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5}, |
| {1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, |
| 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4}, |
| {1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3}, |
| {1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2}}; |
| |
| constexpr uint8_t kOuterThresh[8][kMaxLoopFilterValue + 1] = { |
| {5, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40, |
| 43, 46, 49, 52, 55, 58, 61, 64, 67, 70, 73, 76, 79, |
| 82, 85, 88, 91, 94, 97, 100, 103, 106, 109, 112, 115, 118, |
| 121, 124, 127, 130, 133, 136, 139, 142, 145, 148, 151, 154, 157, |
| 160, 163, 166, 169, 172, 175, 178, 181, 184, 187, 190, 193}, |
| {5, 7, 9, 11, 14, 16, 19, 21, 24, 26, 29, 31, 34, |
| 36, 39, 41, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, |
| 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, |
| 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, |
| 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138}, |
| {5, 7, 9, 11, 14, 16, 19, 21, 24, 26, 29, 31, 34, |
| 36, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, |
| 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, |
| 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, |
| 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137}, |
| {5, 7, 9, 11, 14, 16, 19, 21, 24, 26, 29, 31, 34, |
| 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, |
| 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, |
| 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, |
| 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136}, |
| {5, 7, 9, 11, 14, 16, 19, 21, 24, 26, 29, 31, 33, |
| 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, |
| 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, |
| 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, |
| 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135}, |
| {5, 7, 9, 11, 13, 15, 17, 19, 22, 24, 26, 28, 31, |
| 33, 35, 37, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, |
| 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, |
| 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, |
| 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134}, |
| {5, 7, 9, 11, 13, 15, 17, 19, 22, 24, 26, 28, 31, |
| 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, |
| 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, |
| 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, |
| 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133}, |
| {5, 7, 9, 11, 13, 15, 17, 19, 22, 24, 26, 28, 30, |
| 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, |
| 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, |
| 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, |
| 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132}}; |
