/*
 * 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 AV1_COMMON_ENTROPYMODE_H_
#define AV1_COMMON_ENTROPYMODE_H_

#include "av1/common/entropy.h"
#include "av1/common/entropymv.h"
#include "av1/common/filter.h"
#include "av1/common/seg_common.h"
#include "aom_dsp/aom_filter.h"

#ifdef __cplusplus
extern "C" {
#endif

#define BLOCK_SIZE_GROUPS 4

#define TX_SIZE_CONTEXTS 2

#define INTER_OFFSET(mode) ((mode)-NEARESTMV)

#if CONFIG_PALETTE
#define PALETTE_COLOR_CONTEXTS 16
#define PALETTE_MAX_SIZE 8
#define PALETTE_BLOCK_SIZES (BLOCK_64X64 - BLOCK_8X8 + 1)
#define PALETTE_Y_MODE_CONTEXTS 3
#define PALETTE_MAX_BLOCK_SIZE (64 * 64)
#endif  // CONFIG_PALETTE

struct AV1Common;

typedef struct {
  const int16_t *scan;
  const int16_t *iscan;
  const int16_t *neighbors;
} SCAN_ORDER;

struct tx_probs {
  aom_prob p32x32[TX_SIZE_CONTEXTS][TX_SIZES - 1];
  aom_prob p16x16[TX_SIZE_CONTEXTS][TX_SIZES - 2];
  aom_prob p8x8[TX_SIZE_CONTEXTS][TX_SIZES - 3];
};

struct tx_counts {
  unsigned int p32x32[TX_SIZE_CONTEXTS][TX_SIZES];
  unsigned int p16x16[TX_SIZE_CONTEXTS][TX_SIZES - 1];
  unsigned int p8x8[TX_SIZE_CONTEXTS][TX_SIZES - 2];
  unsigned int tx_totals[TX_SIZES];
};

struct seg_counts {
  unsigned int tree_total[MAX_SEGMENTS];
  unsigned int tree_mispred[MAX_SEGMENTS];
  unsigned int pred[PREDICTION_PROBS][2];
};

typedef struct frame_contexts {
  aom_prob y_mode_prob[BLOCK_SIZE_GROUPS][INTRA_MODES - 1];
  aom_prob uv_mode_prob[INTRA_MODES][INTRA_MODES - 1];
  aom_prob partition_prob[PARTITION_CONTEXTS][PARTITION_TYPES - 1];
  av1_coeff_probs_model coef_probs[TX_SIZES][PLANE_TYPES];
#if CONFIG_RANS || CONFIG_DAALA_EC
  coeff_cdf_model coef_cdfs[TX_SIZES][PLANE_TYPES];
#endif  // CONFIG_RANS
  aom_prob switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]
                                 [SWITCHABLE_FILTERS - 1];

#if CONFIG_ADAPT_SCAN
  // TODO(angiebird): try aom_prob
  uint32_t non_zero_prob_4X4[TX_TYPES][16];
  uint32_t non_zero_prob_8X8[TX_TYPES][64];
  uint32_t non_zero_prob_16X16[TX_TYPES][256];
  uint32_t non_zero_prob_32X32[TX_TYPES][1024];

  DECLARE_ALIGNED(16, int16_t, scan_4X4[TX_TYPES][16]);
  DECLARE_ALIGNED(16, int16_t, scan_8X8[TX_TYPES][64]);
  DECLARE_ALIGNED(16, int16_t, scan_16X16[TX_TYPES][256]);
  DECLARE_ALIGNED(16, int16_t, scan_32X32[TX_TYPES][1024]);

  DECLARE_ALIGNED(16, int16_t, iscan_4X4[TX_TYPES][16]);
  DECLARE_ALIGNED(16, int16_t, iscan_8X8[TX_TYPES][64]);
  DECLARE_ALIGNED(16, int16_t, iscan_16X16[TX_TYPES][256]);
  DECLARE_ALIGNED(16, int16_t, iscan_32X32[TX_TYPES][1024]);

  int16_t nb_4X4[TX_TYPES][(16 + 1) * 2];
  int16_t nb_8X8[TX_TYPES][(64 + 1) * 2];
  int16_t nb_16X16[TX_TYPES][(256 + 1) * 2];
  int16_t nb_32X32[TX_TYPES][(1024 + 1) * 2];

  SCAN_ORDER sc[TX_SIZES][TX_TYPES];
#endif

#if CONFIG_REF_MV
  aom_prob newmv_prob[NEWMV_MODE_CONTEXTS];
  aom_prob zeromv_prob[ZEROMV_MODE_CONTEXTS];
  aom_prob refmv_prob[REFMV_MODE_CONTEXTS];
  aom_prob drl_prob[DRL_MODE_CONTEXTS];
#endif

  aom_prob inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1];
#if CONFIG_MOTION_VAR
  aom_prob motion_mode_prob[BLOCK_SIZES][MOTION_MODES - 1];
#endif  // CONFIG_MOTION_VAR
  aom_prob intra_inter_prob[INTRA_INTER_CONTEXTS];
  aom_prob comp_inter_prob[COMP_INTER_CONTEXTS];
  aom_prob single_ref_prob[REF_CONTEXTS][SINGLE_REFS - 1];
#if CONFIG_EXT_REFS
  aom_prob comp_fwdref_prob[REF_CONTEXTS][FWD_REFS - 1];
  aom_prob comp_bwdref_prob[REF_CONTEXTS][BWD_REFS - 1];
#else
  aom_prob comp_ref_prob[REF_CONTEXTS];
#endif  // CONFIG_EXT_REFS
  struct tx_probs tx_probs;
  aom_prob skip_probs[SKIP_CONTEXTS];
#if CONFIG_REF_MV
  nmv_context nmvc[NMV_CONTEXTS];
#else
  nmv_context nmvc;
#endif
  struct segmentation_probs seg;
  aom_prob intra_ext_tx_prob[EXT_TX_SIZES][TX_TYPES][TX_TYPES - 1];
  aom_prob inter_ext_tx_prob[EXT_TX_SIZES][TX_TYPES - 1];
  int initialized;
#if CONFIG_DAALA_EC
  aom_cdf_prob y_mode_cdf[BLOCK_SIZE_GROUPS][INTRA_MODES];
  aom_cdf_prob uv_mode_cdf[INTRA_MODES][INTRA_MODES];
  aom_cdf_prob partition_cdf[PARTITION_CONTEXTS][PARTITION_TYPES];
  aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS]
                                    [SWITCHABLE_FILTERS];
  aom_cdf_prob inter_mode_cdf[INTER_MODE_CONTEXTS][INTER_MODES];
  aom_cdf_prob intra_ext_tx_cdf[EXT_TX_SIZES][TX_TYPES][TX_TYPES];
  aom_cdf_prob inter_ext_tx_cdf[EXT_TX_SIZES][TX_TYPES];
#endif
#if CONFIG_DELTA_Q
  aom_prob delta_q_prob[DELTA_Q_CONTEXTS];
#endif
} FRAME_CONTEXT;

typedef struct FRAME_COUNTS {
  unsigned int kf_y_mode[INTRA_MODES][INTRA_MODES][INTRA_MODES];
  unsigned int y_mode[BLOCK_SIZE_GROUPS][INTRA_MODES];
  unsigned int uv_mode[INTRA_MODES][INTRA_MODES];
  unsigned int partition[PARTITION_CONTEXTS][PARTITION_TYPES];
  av1_coeff_count_model coef[TX_SIZES][PLANE_TYPES];
  unsigned int eob_branch[TX_SIZES][PLANE_TYPES][REF_TYPES][COEF_BANDS]
                         [COEFF_CONTEXTS];
  unsigned int switchable_interp[SWITCHABLE_FILTER_CONTEXTS]
                                [SWITCHABLE_FILTERS];

#if CONFIG_ADAPT_SCAN
  unsigned int non_zero_count_4X4[TX_TYPES][16];
  unsigned int non_zero_count_8X8[TX_TYPES][64];
  unsigned int non_zero_count_16X16[TX_TYPES][256];
  unsigned int non_zero_count_32X32[TX_TYPES][1024];
  unsigned int txb_count[TX_SIZES][TX_TYPES];
#endif

#if CONFIG_REF_MV
  unsigned int newmv_mode[NEWMV_MODE_CONTEXTS][2];
  unsigned int zeromv_mode[ZEROMV_MODE_CONTEXTS][2];
  unsigned int refmv_mode[REFMV_MODE_CONTEXTS][2];
  unsigned int drl_mode[DRL_MODE_CONTEXTS][2];
#endif

  unsigned int inter_mode[INTER_MODE_CONTEXTS][INTER_MODES];
#if CONFIG_MOTION_VAR
  unsigned int motion_mode[BLOCK_SIZES][MOTION_MODES];
#endif  // CONFIG_MOTION_VAR
  unsigned int intra_inter[INTRA_INTER_CONTEXTS][2];
  unsigned int comp_inter[COMP_INTER_CONTEXTS][2];
  unsigned int single_ref[REF_CONTEXTS][SINGLE_REFS - 1][2];
#if CONFIG_EXT_REFS
  unsigned int comp_fwdref[REF_CONTEXTS][FWD_REFS - 1][2];
  unsigned int comp_bwdref[REF_CONTEXTS][BWD_REFS - 1][2];
#else
  unsigned int comp_ref[REF_CONTEXTS][2];
#endif  // CONFIG_EXT_REFS
  struct tx_counts tx;
  unsigned int skip[SKIP_CONTEXTS][2];
#if CONFIG_REF_MV
  nmv_context_counts mv[NMV_CONTEXTS];
#else
  nmv_context_counts mv;
#endif
  struct seg_counts seg;
#if CONFIG_DELTA_Q
  unsigned int delta_q[DELTA_Q_CONTEXTS][2];
#endif
  unsigned int intra_ext_tx[EXT_TX_SIZES][TX_TYPES][TX_TYPES];
  unsigned int inter_ext_tx[EXT_TX_SIZES][TX_TYPES];
} FRAME_COUNTS;

extern const aom_prob av1_kf_y_mode_prob[INTRA_MODES][INTRA_MODES]
                                        [INTRA_MODES - 1];
#if CONFIG_DAALA_EC
extern aom_cdf_prob av1_kf_y_mode_cdf[INTRA_MODES][INTRA_MODES][INTRA_MODES];
#endif

#if CONFIG_PALETTE
extern const aom_prob av1_default_palette_y_mode_prob[PALETTE_BLOCK_SIZES]
                                                     [PALETTE_Y_MODE_CONTEXTS];
extern const aom_prob av1_default_palette_uv_mode_prob[2];
extern const aom_prob av1_default_palette_y_size_prob[PALETTE_BLOCK_SIZES]
                                                     [PALETTE_SIZES - 1];
extern const aom_prob av1_default_palette_uv_size_prob[PALETTE_BLOCK_SIZES]
                                                      [PALETTE_SIZES - 1];
extern const aom_prob av1_default_palette_y_color_prob[PALETTE_MAX_SIZE - 1]
                                                      [PALETTE_COLOR_CONTEXTS]
                                                      [PALETTE_COLORS - 1];
extern const aom_prob av1_default_palette_uv_color_prob[PALETTE_MAX_SIZE - 1]
                                                       [PALETTE_COLOR_CONTEXTS]
                                                       [PALETTE_COLORS - 1];
#endif  // CONFIG_PALETTE

extern const aom_tree_index av1_intra_mode_tree[TREE_SIZE(INTRA_MODES)];
extern const aom_tree_index av1_inter_mode_tree[TREE_SIZE(INTER_MODES)];
#if CONFIG_DAALA_EC
extern int av1_intra_mode_ind[INTRA_MODES];
extern int av1_intra_mode_inv[INTRA_MODES];
extern int av1_inter_mode_ind[INTER_MODES];
extern int av1_inter_mode_inv[INTER_MODES];
#endif
#if CONFIG_MOTION_VAR
extern const aom_tree_index av1_motion_mode_tree[TREE_SIZE(MOTION_MODES)];
#endif  // CONFIG_MOTION_VAR
extern const aom_tree_index av1_partition_tree[TREE_SIZE(PARTITION_TYPES)];
extern const aom_tree_index
    av1_switchable_interp_tree[TREE_SIZE(SWITCHABLE_FILTERS)];

#if CONFIG_PALETTE
extern const aom_tree_index av1_palette_size_tree[TREE_SIZE(PALETTE_SIZES)];
extern const aom_tree_index av1_palette_color_tree[PALETTE_MAX_SIZE - 1]
                                                  [TREE_SIZE(PALETTE_COLORS)];
#endif  // CONFIG_PALETTE

#if CONFIG_DAALA_EC
extern int av1_switchable_interp_ind[SWITCHABLE_FILTERS];
extern int av1_switchable_interp_inv[SWITCHABLE_FILTERS];
#endif

void av1_setup_past_independence(struct AV1Common *cm);

void av1_adapt_intra_frame_probs(struct AV1Common *cm);
void av1_adapt_inter_frame_probs(struct AV1Common *cm);

void av1_tx_counts_to_branch_counts_32x32(const unsigned int *tx_count_32x32p,
                                          unsigned int (*ct_32x32p)[2]);
void av1_tx_counts_to_branch_counts_16x16(const unsigned int *tx_count_16x16p,
                                          unsigned int (*ct_16x16p)[2]);
void av1_tx_counts_to_branch_counts_8x8(const unsigned int *tx_count_8x8p,
                                        unsigned int (*ct_8x8p)[2]);

extern const aom_tree_index av1_ext_tx_tree[TREE_SIZE(TX_TYPES)];
#if CONFIG_DAALA_EC
extern int av1_ext_tx_ind[TX_TYPES];
extern int av1_ext_tx_inv[TX_TYPES];
#endif

static INLINE int av1_ceil_log2(int n) {
  int i = 1, p = 2;
  while (p < n) {
    i++;
    p = p << 1;
  }
  return i;
}

#if CONFIG_PALETTE
int av1_get_palette_color_context(const uint8_t *color_map, int cols, int r,
                                  int c, int n, uint8_t *color_order,
                                  int *color_idx);
#endif  // CONFIG_PALETTE

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

#endif  // AV1_COMMON_ENTROPYMODE_H_