context_tree.h - mozsearch

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/*

 * 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;

typedef struct {

  tran_low_t *coeff_buf[MAX_MB_PLANE];

  tran_low_t *qcoeff_buf[MAX_MB_PLANE];

  tran_low_t *dqcoeff_buf[MAX_MB_PLANE];

} PC_TREE_SHARED_BUFFERS;

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

typedef struct PICK_MODE_CONTEXT {

  MB_MODE_INFO mic;

  MB_MODE_INFO_EXT_FRAME mbmi_ext_best;

  uint8_t *color_index_map[2];

  uint8_t *blk_skip;

  tran_low_t *coeff[MAX_MB_PLANE];

  tran_low_t *qcoeff[MAX_MB_PLANE];

  tran_low_t *dqcoeff[MAX_MB_PLANE];

  uint16_t *eobs[MAX_MB_PLANE];

  uint8_t *txb_entropy_ctx[MAX_MB_PLANE];

  uint8_t *tx_type_map;

  int num_4x4_blk;

  // For current partition, only if all Y, U, and V transform blocks'

  // coefficients are quantized to 0, skippable is set to 1.

  int skippable;

#if CONFIG_INTERNAL_STATS

  THR_MODES best_mode_index;

#endif  // CONFIG_INTERNAL_STATS

  RD_STATS rd_stats;

  int rd_mode_is_ready;  // Flag to indicate whether rd pick mode decision has

                         // been made.

#if CONFIG_AV1_TEMPORAL_DENOISING

  int64_t newmv_sse;

  int64_t zeromv_sse;

  int64_t zeromv_lastref_sse;

  PREDICTION_MODE best_sse_inter_mode;

  int_mv best_sse_mv;

  MV_REFERENCE_FRAME best_reference_frame;

  MV_REFERENCE_FRAME best_zeromv_reference_frame;

  int sb_skip_denoising;

#endif

} PICK_MODE_CONTEXT;

typedef struct PC_TREE {

  PARTITION_TYPE partitioning;

  BLOCK_SIZE block_size;

  PICK_MODE_CONTEXT *none;

  PICK_MODE_CONTEXT *horizontal[2];

  PICK_MODE_CONTEXT *vertical[2];

#if !CONFIG_REALTIME_ONLY

  PICK_MODE_CONTEXT *horizontala[3];

  PICK_MODE_CONTEXT *horizontalb[3];

  PICK_MODE_CONTEXT *verticala[3];

  PICK_MODE_CONTEXT *verticalb[3];

  PICK_MODE_CONTEXT *horizontal4[4];

  PICK_MODE_CONTEXT *vertical4[4];

#endif

  struct PC_TREE *split[4];

  int index;

} PC_TREE;

typedef struct SIMPLE_MOTION_DATA_TREE {

  BLOCK_SIZE block_size;

  PARTITION_TYPE partitioning;

  struct SIMPLE_MOTION_DATA_TREE *split[4];

  // Simple motion search_features

  FULLPEL_MV start_mvs[REF_FRAMES];

  unsigned int sms_none_feat[2];

  unsigned int sms_rect_feat[8];

  int sms_none_valid;

  int sms_rect_valid;

} 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] = {

  BLOCK_4X4, BLOCK_8X8, BLOCK_16X16, BLOCK_32X32, BLOCK_64X64, BLOCK_128X128,

};

static inline int av1_get_pc_tree_nodes(const int is_sb_size_128,

                                        int stat_generation_stage) {

  const int tree_nodes_inc = is_sb_size_128 ? 1024 : 0;

  const int tree_nodes =

      stat_generation_stage ? 1 : (tree_nodes_inc + 256 + 64 + 16 + 4 + 1);

  return tree_nodes;

// 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_