1 /* 2 * Copyright 2019 The libgav1 Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBGAV1_SRC_DSP_COMMON_H_ 18 #define LIBGAV1_SRC_DSP_COMMON_H_ 19 20 #include <cstddef> // ptrdiff_t 21 #include <cstdint> 22 23 #include "src/dsp/constants.h" 24 #include "src/utils/constants.h" 25 #include "src/utils/memory.h" 26 27 namespace libgav1 { 28 29 // Self guided projection filter. 30 struct SgrProjInfo { 31 int index; 32 int multiplier[2]; 33 }; 34 35 struct WienerInfo { 36 static const int kVertical = 0; 37 static const int kHorizontal = 1; 38 39 alignas(kMaxAlignment) int16_t filter[2][kSubPixelTaps]; 40 }; 41 42 struct RestorationUnitInfo : public MaxAlignedAllocable { 43 LoopRestorationType type; 44 SgrProjInfo sgr_proj_info; 45 WienerInfo wiener_info; 46 }; 47 48 struct RestorationBuffer { 49 // For self-guided filter. 50 int* box_filter_process_output[2]; 51 ptrdiff_t box_filter_process_output_stride; 52 uint32_t* box_filter_process_intermediate[2]; 53 ptrdiff_t box_filter_process_intermediate_stride; 54 // For wiener filter. 55 uint16_t* wiener_buffer; 56 ptrdiff_t wiener_buffer_stride; 57 }; 58 59 } // namespace libgav1 60 61 #endif // LIBGAV1_SRC_DSP_COMMON_H_ 62