chromium/third_party/libaom/source/libaom/av1/encoder/context_tree.h

/*
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#ifndef AOM_AV1_ENCODER_CONTEXT_TREE_H_
#define AOM_AV1_ENCODER_CONTEXT_TREE_H_

#include "config/aom_config.h"

#include "av1/common/blockd.h"
#include "av1/encoder/block.h"
#include "av1/encoder/speed_features.h"

#ifdef __cplusplus
extern "C" {
#endif

struct AV1_PRIMARY;
struct AV1_COMP;
struct AV1Common;
struct ThreadData;

PC_TREE_SHARED_BUFFERS;

// Structure to hold snapshot of coding context during the mode picking process
PICK_MODE_CONTEXT;

PC_TREE;

SIMPLE_MOTION_DATA_TREE;

void av1_setup_shared_coeff_buffer(const SequenceHeader *const seq_params,
                                   PC_TREE_SHARED_BUFFERS *shared_bufs,
                                   struct aom_internal_error_info *error);
void av1_free_shared_coeff_buffer(PC_TREE_SHARED_BUFFERS *shared_bufs);

PC_TREE *av1_alloc_pc_tree_node(BLOCK_SIZE bsize);
void av1_free_pc_tree_recursive(PC_TREE *tree, int num_planes, int keep_best,
                                int keep_none,
                                PARTITION_SEARCH_TYPE partition_search_type);

PICK_MODE_CONTEXT *av1_alloc_pmc(const struct AV1_COMP *const cpi,
                                 BLOCK_SIZE bsize,
                                 PC_TREE_SHARED_BUFFERS *shared_bufs);
void av1_reset_pmc(PICK_MODE_CONTEXT *ctx);
void av1_free_pmc(PICK_MODE_CONTEXT *ctx, int num_planes);
void av1_copy_tree_context(PICK_MODE_CONTEXT *dst_ctx,
                           PICK_MODE_CONTEXT *src_ctx);

static const BLOCK_SIZE square[MAX_SB_SIZE_LOG2 - 1] = …;

static inline int av1_get_pc_tree_nodes(const int is_sb_size_128,
                                        int stat_generation_stage) { … }

// Returns 0 on success, -1 on memory allocation failure.
int av1_setup_sms_tree(struct AV1_COMP *const cpi, struct ThreadData *td);
void av1_free_sms_tree(struct ThreadData *td);

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // AOM_AV1_ENCODER_CONTEXT_TREE_H_