/*
 *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef VP9_ENCODER_VP9_CONTEXT_TREE_H_
#define VP9_ENCODER_VP9_CONTEXT_TREE_H_

#include "vp9/common/vp9_onyxc_int.h"

struct VP9_COMP;

// Structure to hold snapshot of coding context during the mode picking process
typedef struct {
  MODE_INFO mic;
  uint8_t *zcoeff_blk;
  int16_t *coeff[MAX_MB_PLANE][3];
  int16_t *qcoeff[MAX_MB_PLANE][3];
  int16_t *dqcoeff[MAX_MB_PLANE][3];
  uint16_t *eobs[MAX_MB_PLANE][3];

  // dual buffer pointers, 0: in use, 1: best in store
  int16_t *coeff_pbuf[MAX_MB_PLANE][3];
  int16_t *qcoeff_pbuf[MAX_MB_PLANE][3];
  int16_t *dqcoeff_pbuf[MAX_MB_PLANE][3];
  uint16_t *eobs_pbuf[MAX_MB_PLANE][3];

  int is_coded;
  int num_4x4_blk;
  int skip;
  int skip_txfm;
  int best_mode_index;
  int hybrid_pred_diff;
  int comp_pred_diff;
  int single_pred_diff;
  int64_t tx_rd_diff[TX_MODES];
  int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];

  // motion vector cache for adaptive motion search control in partition
  // search loop
  MV pred_mv[MAX_REF_FRAMES];
  INTERP_FILTER pred_interp_filter;
} PICK_MODE_CONTEXT;

typedef struct PC_TREE {
  int index;
  PARTITION_TYPE partitioning;
  BLOCK_SIZE block_size;
  PICK_MODE_CONTEXT none;
  PICK_MODE_CONTEXT horizontal[2];
  PICK_MODE_CONTEXT vertical[2];
  union {
    struct PC_TREE *split[4];
    PICK_MODE_CONTEXT *leaf_split[4];
  };
} PC_TREE;

void vp9_setup_pc_tree(struct VP9Common *cm, struct VP9_COMP *cpi);
void vp9_free_pc_tree(struct VP9_COMP *cpi);

#endif /* VP9_ENCODER_VP9_CONTEXT_TREE_H_ */