#ifndef ENCODER_H_
#define ENCODER_H_
/*****************************************************************************
 * This file is part of Kvazaar HEVC encoder.
 *
 * Copyright (C) 2013-2014 Tampere University of Technology and others (see
 * COPYING file).
 *
 * Kvazaar is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * Kvazaar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Kvazaar.  If not, see <http://www.gnu.org/licenses/>.
 ****************************************************************************/

/*
 * \file
 * \brief The highest level of the encoder.
 */

#include "global.h"

#include "picture.h"
#include "bitstream.h"
#include "cabac.h"
#include "config.h"
#include "tables.h"
#include "scalinglist.h"


/* TODO: add ME data */
typedef struct
{
  void (*IME)();
  void (*FME)();
  int range;
} encoder_me;

enum { FORMAT_400 = 0, FORMAT_420, FORMAT_422, FORMAT_444 };

/* Input info struct */
typedef struct
{
  FILE *file;
  int32_t real_width;  /*!< \brief real input picture width */
  int32_t real_height; /*!< \brief real input picture width */
  picture *cur_pic;
  int8_t video_format;
  int8_t bitdepth;  /*!< \brief input bit depth (8,10) */
} encoder_input;

/* Encoder control options, the main struct */
typedef struct
{
  int32_t frame;
  int32_t poc; /*!< \brief picture order count */
  const config *cfg;
  encoder_input in;
  encoder_me me;
  bitstream stream;
  FILE *output;
  picture_list *ref;
  int8_t ref_list;
  int8_t ref_idx_num[2];
  int8_t QP;             // \brief Quantization parameter
  int8_t bitdepth;
  double cur_lambda_cost;

  /* Filtering */
  int8_t deblock_enable; // \brief Flag to enable deblocking filter
  int8_t sao_enable;     // \brief Flag to enable sample adaptive offset filter
  int8_t rdoq_enable;    // \brief Whether RDOQ is enabled or not.
  int8_t rdo;            // \brief RDO level
  int8_t trskip_enable;    // \brief Flag to enable transform skipping (4x4 intra)
  int8_t beta_offset_div2; // \brief (deblocking) beta offset (div 2), range -6...6
  int8_t tc_offset_div2;   // \brief (deblocking)tc offset (div 2), range -6...6

  /* VUI */
  struct
  {
    int16_t sar_width;
    int16_t sar_height;
    int8_t overscan;
    int8_t videoformat;
    int8_t fullrange;
    int8_t colorprim;
    int8_t transfer;
    int8_t colormatrix;
    int8_t chroma_loc;
  } vui;

  int8_t aud_enable;

  //scaling list
  scaling_list scaling_list;
} encoder_control;

void init_lambda(encoder_control *encoder);
encoder_control *init_encoder_control(config *cfg);
void init_encoder_input(encoder_input *input, FILE* inputfile,
                        int32_t width, int32_t height);
void encode_one_frame(encoder_control *encoder);
int read_one_frame(FILE *file, const encoder_control * const encoder);

void encode_seq_parameter_set(encoder_control * const encoder);
void encode_pic_parameter_set(encoder_control * const encoder);
void encode_vid_parameter_set(encoder_control * const encoder);
void encode_slice_header(encoder_control * const encoder);
void encode_access_unit_delimiter(encoder_control * const encoder);
void encode_prefix_sei_version(encoder_control * const encoder);
void encode_coding_tree(const encoder_control * const encoder, cabac_data *cabac, uint16_t x_ctb,
                        uint16_t y_ctb, uint8_t depth);

void encode_last_significant_xy(cabac_data *cabac,
                                uint8_t lastpos_x, uint8_t lastpos_y,
                                uint8_t width, uint8_t height,
                                uint8_t type, uint8_t scan);
void encode_coeff_nxn(const encoder_control * const encoder, cabac_data *cabac, int16_t *coeff, uint8_t width,
                      uint8_t type, int8_t scan_mode, int8_t tr_skip);
void encode_transform_tree(const encoder_control * const encoder, cabac_data* cabac, int32_t x, int32_t y, uint8_t depth, lcu_t* lcu );
void encode_transform_coeff(const encoder_control * const encoder, cabac_data *cabac, int32_t x_cu, int32_t y_cu,
                            int8_t depth, int8_t tr_depth, uint8_t parent_coeff_u, uint8_t parent_coeff_v);
void encode_block_residual(const encoder_control * const encoder,
                           uint16_t x_ctb, uint16_t y_ctb, uint8_t depth);

static const uint8_t g_group_idx[32] = {
  0, 1, 2, 3, 4, 4, 5, 5, 6, 6,
  6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
  8, 8, 8, 8, 9, 9, 9, 9, 9, 9,
  9, 9 };

static const uint8_t g_min_in_group[10] = {
  0, 1, 2, 3, 4, 6, 8, 12, 16, 24 };




#define C1FLAG_NUMBER 8 // maximum number of largerThan1 flag coded in one chunk
#define C2FLAG_NUMBER 1 // maximum number of largerThan2 flag coded in one chunk



#endif