post_filter.h | Explore in Territory

/*
 * 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_POST_FILTER_H_
#define LIBGAV1_SRC_POST_FILTER_H_

#include <algorithm>
#include <array>
#include <atomic>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <type_traits>

#include "src/dsp/common.h"
#include "src/dsp/dsp.h"
#include "src/frame_scratch_buffer.h"
#include "src/loop_restoration_info.h"
#include "src/obu_parser.h"
#include "src/utils/array_2d.h"
#include "src/utils/block_parameters_holder.h"
#include "src/utils/common.h"
#include "src/utils/constants.h"
#include "src/utils/memory.h"
#include "src/utils/threadpool.h"
#include "src/yuv_buffer.h"

namespace libgav1 {

// This class applies in-loop filtering for each frame after it is
// reconstructed. The in-loop filtering contains all post processing filtering
// for the reconstructed frame, including deblock filter, CDEF, superres,
// and loop restoration.
// Historically, for example in libaom, loop filter refers to deblock filter.
// To avoid name conflicts, we call this class PostFilter (post processing).
// In-loop post filtering order is:
// deblock --> CDEF --> super resolution--> loop restoration.
// When CDEF and super resolution is not used, we can combine deblock
// and restoration together to only filter frame buffer once.
class PostFilter { … };

extern template void PostFilter::ExtendFrame<uint8_t>(uint8_t* frame_start,
                                                      int width, int height,
                                                      ptrdiff_t stride,
                                                      int left, int right,
                                                      int top, int bottom);

#if LIBGAV1_MAX_BITDEPTH >= 10
extern template void PostFilter::ExtendFrame<uint16_t>(uint16_t* frame_start,
                                                       int width, int height,
                                                       ptrdiff_t stride,
                                                       int left, int right,
                                                       int top, int bottom);
#endif

}  // namespace libgav1

#endif  // LIBGAV1_SRC_POST_FILTER_H_
chromium/third_party/libgav1/src/src/post_filter.h
