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/*
* 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.
*/
#ifndef LIBGAV1_SRC_LOOP_RESTORATION_INFO_H_
#define LIBGAV1_SRC_LOOP_RESTORATION_INFO_H_
#include <array>
#include <cstdint>
#include "src/dsp/common.h"
#include "src/symbol_decoder_context.h"
#include "src/utils/constants.h"
#include "src/utils/dynamic_buffer.h"
#include "src/utils/entropy_decoder.h"
#include "src/utils/types.h"
namespace libgav1 {
struct LoopRestorationUnitInfo {
int row_start;
int row_end;
int column_start;
int column_end;
};
class LoopRestorationInfo {
public:
LoopRestorationInfo() = default;
// Non copyable/movable.
LoopRestorationInfo(const LoopRestorationInfo&) = delete;
LoopRestorationInfo& operator=(const LoopRestorationInfo&) = delete;
LoopRestorationInfo(LoopRestorationInfo&&) = delete;
LoopRestorationInfo& operator=(LoopRestorationInfo&&) = delete;
bool Reset(const LoopRestoration* loop_restoration, uint32_t width,
uint32_t height, int8_t subsampling_x, int8_t subsampling_y,
bool is_monochrome);
// Populates the |unit_info| for the super block at |row4x4|, |column4x4|.
// Returns true on success, false otherwise.
bool PopulateUnitInfoForSuperBlock(Plane plane, BlockSize block_size,
bool is_superres_scaled,
uint8_t superres_scale_denominator,
int row4x4, int column4x4,
LoopRestorationUnitInfo* unit_info) const;
void ReadUnitCoefficients(EntropyDecoder* reader,
SymbolDecoderContext* symbol_decoder_context,
Plane plane, int unit_id,
std::array<RestorationUnitInfo, kMaxPlanes>*
reference_unit_info); // 5.11.58.
void ReadWienerInfo(
EntropyDecoder* reader, Plane plane, int unit_id,
std::array<RestorationUnitInfo, kMaxPlanes>* reference_unit_info);
void ReadSgrProjInfo(
EntropyDecoder* reader, Plane plane, int unit_id,
std::array<RestorationUnitInfo, kMaxPlanes>* reference_unit_info);
// Getters.
const RestorationUnitInfo* loop_restoration_info(Plane plane,
int unit_id) const {
return &loop_restoration_info_[plane][unit_id];
}
int num_horizontal_units(Plane plane) const {
return num_horizontal_units_[plane];
}
int num_vertical_units(Plane plane) const {
return num_vertical_units_[plane];
}
int num_units(Plane plane) const { return num_units_[plane]; }
private:
// If plane_needs_filtering_[plane] is true, loop_restoration_info_[plane]
// points to an array of num_units_[plane] elements.
RestorationUnitInfo* loop_restoration_info_[kMaxPlanes];
// Owns the memory that loop_restoration_info_[plane] points to.
DynamicBuffer<RestorationUnitInfo> loop_restoration_info_buffer_;
bool plane_needs_filtering_[kMaxPlanes];
const LoopRestoration* loop_restoration_;
int8_t subsampling_x_;
int8_t subsampling_y_;
int num_horizontal_units_[kMaxPlanes];
int num_vertical_units_[kMaxPlanes];
int num_units_[kMaxPlanes];
};
} // namespace libgav1
#endif // LIBGAV1_SRC_LOOP_RESTORATION_INFO_H_
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