#ifndef GLOBAL_H_
#define GLOBAL_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 Header that is included in every other header.
´*
 * This file contains global constants that can be referred to from any header
 * or source file. It also contains some helper macros and includes stdint.h
 * so that any file can refer to integer types with exact widths.
 */

#include <stdint.h>
#include <stdio.h>
#include <limits.h>

#if _MSC_VER && _M_AMD64
  #define X86_64
#endif

#if __GNUC__ && __x86_64__
  #define X86_64
#endif

#define BIT_DEPTH 8
#define PIXEL_MIN 0
#define PIXEL_MAX (1 << BIT_DEPTH)

#if BIT_DEPTH == 8
typedef uint8_t pixel;
#else
typedef uint16_t pixel;
#endif
typedef int16_t coefficient;

//#define VERBOSE 1

/* CONFIG VARIABLES */
#define LCU_WIDTH 64 /*!< Largest Coding Unit (IT'S 64x64, DO NOT TOUCH!) */

#define MAX_INTER_SEARCH_DEPTH 3
#define MIN_INTER_SEARCH_DEPTH 0

#define MAX_INTRA_SEARCH_DEPTH 3 /*!< Max search depth -> min block size (3 == 8x8) */
#define MIN_INTRA_SEARCH_DEPTH 1 /*!< Min search depth -> max block size (0 == 64x64) */


#define MAX_DEPTH 3  /*!< smallest CU is LCU_WIDTH>>MAX_DEPTH */
#define MAX_PU_DEPTH 4
#define MIN_SIZE 3   /*!< log2_min_coding_block_size */
#define CU_MIN_SIZE_PIXELS 8 /*!< pow(2, MIN_SIZE) */

#define TR_DEPTH_INTRA 2
#define TR_DEPTH_INTER 2

#define ENABLE_PCM 0 /*!< Setting to 1 will enable using PCM blocks (current intra-search does not consider PCM) */
#define ENABLE_SIGN_HIDING 1
#define ENABLE_SCALING_LIST 0 /*!< Enable usage of (default) scaling list */

#define ENABLE_TEMPORAL_MVP 0 /*!< Enable usage of temporal Motion Vector Prediction */

#define OPTIMIZATION_SKIP_RESIDUAL_ON_THRESHOLD 0 /*!< skip residual coding when it's under _some_ threshold */

#define RDOQ 1 /*!< Rate-Distortion Optimized Quantization */

/* END OF CONFIG VARIABLES */

#define LCU_LUMA_SIZE (LCU_WIDTH * LCU_WIDTH)
#define LCU_CHROMA_SIZE (LCU_WIDTH * LCU_WIDTH >> 2)

#define MAX_REF_PIC_COUNT 5

#define AMVP_MAX_NUM_CANDS 2
#define AMVP_MAX_NUM_CANDS_MEM 3
#define MRG_MAX_NUM_CANDS 5

/* Some tools */
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
#define CLIP(low,high,value) MAX((low),MIN((high),(value)))
#define SWAP(a,b,swaptype) { swaptype tempval; tempval = a; a = b; b = tempval; }
#define CU_WIDTH_FROM_DEPTH(depth) (LCU_WIDTH >> depth)
#define NO_SCU_IN_LCU(no_lcu) ((no_lcu) << MAX_DEPTH)
#define WITHIN(val, min_val, max_val) ((min_val) <= (val) && (val) <= (max_val))

#define LOG2_LCU_WIDTH 6
// CU_TO_PIXEL = y * lcu_width * pic_width + x * lcu_width
#define CU_TO_PIXEL(x, y, depth, width) (((y) << (LOG2_LCU_WIDTH - (depth))) * (width) \
                                         + ((x) << (LOG2_LCU_WIDTH - (depth))))
//#define SIGN3(x) ((x) > 0) ? +1 : ((x) == 0 ? 0 : -1)
#define SIGN3(x) (((x) > 0) - ((x) < 0))

#define VERSION_STRING "0.2               "
#define VERSION 0.2

//#define VERBOSE 1

#define SAO_ABS_OFFSET_MAX ((1 << (MIN(BIT_DEPTH, 10) - 5)) - 1)


#define SIZE_2Nx2N 0
#define SIZE_2NxN  1
#define SIZE_Nx2N  2
#define SIZE_NxN   3
#define SIZE_NONE  15

// These are for marking incomplete implementations that break if slices or
// tiles are used with asserts. They should be set to 1 if they are ever
// implemented.
#define USE_SLICES 0
#define USE_TILES 0

/* Inlining functions */
#ifdef _MSC_VER /* Visual studio */
  #define INLINE __forceinline
  #pragma inline_recursion(on)
#else /* others */
  #define INLINE inline
#endif

#ifdef _MSC_VER
// Buggy VS2010 throws intellisense warnings if void* is not casted.
  #define MALLOC(type, num) (type *)malloc(sizeof(type) * num)
#else
  #define MALLOC(type, num) malloc(sizeof(type) * num)
#endif

#define FREE_POINTER(pointer) { free(pointer); pointer = NULL; }
#define MOVE_POINTER(dst_pointer,src_pointer) { dst_pointer = src_pointer; src_pointer = NULL; }

#ifndef MAX_INT
#define MAX_INT 0x7FFFFFFF
#endif
#ifndef MAX_INT64
#define MAX_INT64 0x7FFFFFFFFFFFFFFFLL
#endif
#ifndef MAX_DOUBLE
#define MAX_DOUBLE 1.7e+308
#endif

#endif