/* The copyright in this software is being made available under the BSD
 * License, included below. This software may be subject to other third party
 * and contributor rights, including patent rights, and no such rights are
 * granted under this license.
 *
 * Copyright (c) 2010-2015, ITU/ISO/IEC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
 *    be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/** \file     CommonDef.h
    \brief    Defines constants, macros and tool parameters
*/

#ifndef __COMMONDEF__
#define __COMMONDEF__

#include <algorithm>
#include <iostream>
#include <assert.h>

#if _MSC_VER > 1000
// disable "signed and unsigned mismatch"
#pragma warning( disable : 4018 )
// disable Bool coercion "performance warning"
#pragma warning( disable : 4800 )
#endif // _MSC_VER > 1000
#include "TypeDef.h"

#ifdef _MSC_VER
#if _MSC_VER <= 1500
inline Int64 abs (Int64 x) { return _abs64(x); };
#endif
#endif

//! \ingroup TLibCommon
//! \{

// ====================================================================================================================
// Version information
// ====================================================================================================================

#if SVC_EXTENSION
#include <vector>
#define NV_VERSION        "9.0 (HM-16.4)"        ///< Current SHM software version
#else
#define NV_VERSION        "16.4"                 ///< Current software version
#endif

// ====================================================================================================================
// Platform information
// ====================================================================================================================

#ifdef __GNUC__
#define NVM_COMPILEDBY  "[GCC %d.%d.%d]", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__
#ifdef __IA64__
#define NVM_ONARCH    "[on 64-bit] "
#else
#define NVM_ONARCH    "[on 32-bit] "
#endif
#endif

#ifdef __INTEL_COMPILER
#define NVM_COMPILEDBY  "[ICC %d]", __INTEL_COMPILER
#elif  _MSC_VER
#define NVM_COMPILEDBY  "[VS %d]", _MSC_VER
#endif

#ifndef NVM_COMPILEDBY
#define NVM_COMPILEDBY "[Unk-CXX]"
#endif

#ifdef _WIN32
#define NVM_ONOS        "[Windows]"
#elif  __linux
#define NVM_ONOS        "[Linux]"
#elif  __CYGWIN__
#define NVM_ONOS        "[Cygwin]"
#elif __APPLE__
#define NVM_ONOS        "[Mac OS X]"
#else
#define NVM_ONOS "[Unk-OS]"
#endif

#define NVM_BITS          "[%d bit] ", (sizeof(Void*) == 8 ? 64 : 32) ///< used for checking 64-bit O/S

#ifndef NULL
#define NULL              0
#endif

// ====================================================================================================================
// Common constants
// ====================================================================================================================

#define _SUMMARY_OUT_               0           ///< print-out PSNR results of all slices to summary.txt
#define _SUMMARY_PIC_               0           ///< print-out PSNR results for each slice type to summary.txt

#define MAX_GOP                     64          ///< max. value of hierarchical GOP size

#define MAX_NUM_REF_PICS            16          ///< max. number of pictures used for reference
#define MAX_NUM_REF                 16          ///< max. number of entries in picture reference list

#define MAX_UINT                    0xFFFFFFFFU ///< max. value of unsigned 32-bit integer
#define MAX_INT                     2147483647  ///< max. value of signed 32-bit integer
#define MAX_INT64                   0x7FFFFFFFFFFFFFFFLL  ///< max. value of signed 64-bit integer
#if RExt__HIGH_BIT_DEPTH_SUPPORT
#define MAX_INTERMEDIATE_INT        MAX_INT64
#else
#define MAX_INTERMEDIATE_INT        MAX_INT
#endif

#define MAX_DOUBLE                  1.7e+308    ///< max. value of Double-type value

#define MIN_QP                      0
#define MAX_QP                      51

#define NOT_VALID                   -1

// ====================================================================================================================
// Macro functions
// ====================================================================================================================

template <typename T> inline T Clip3 (const T minVal, const T maxVal, const T a) { return std::min<T> (std::max<T> (minVal, a) , maxVal); }  ///< general min/max clip
template <typename T> inline T ClipBD(const T x, const Int bitDepth)             { return Clip3(T(0), T((1 << bitDepth)-1), x);           }

template <typename T> inline Void Check3( T minVal, T maxVal, T a)
{
  if ((a > maxVal) || (a < minVal))
  {
    std::cerr << "ERROR: Range check " << minVal << " >= " << a << " <= " << maxVal << " failed" << std::endl;
    assert(false);
    exit(1);
  }
}  ///< general min/max clip

#define DATA_ALIGN                  1                                                                 ///< use 32-bit aligned malloc/free
#if     DATA_ALIGN && _WIN32 && ( _MSC_VER > 1300 )
#define xMalloc( type, len )        _aligned_malloc( sizeof(type)*(len), 32 )
#define xFree( ptr )                _aligned_free  ( ptr )
#else
#define xMalloc( type, len )        malloc   ( sizeof(type)*(len) )
#define xFree( ptr )                free     ( ptr )
#endif

#define FATAL_ERROR_0(MESSAGE, EXITCODE)                      \
{                                                             \
  printf(MESSAGE);                                            \
  exit(EXITCODE);                                             \
}

template <typename ValueType> inline ValueType leftShift       (const ValueType value, const Int shift) { return (shift >= 0) ? ( value                                  << shift) : ( value                                   >> -shift); }
template <typename ValueType> inline ValueType rightShift      (const ValueType value, const Int shift) { return (shift >= 0) ? ( value                                  >> shift) : ( value                                   << -shift); }
template <typename ValueType> inline ValueType leftShift_round (const ValueType value, const Int shift) { return (shift >= 0) ? ( value                                  << shift) : ((value + (ValueType(1) << (-shift - 1))) >> -shift); }
template <typename ValueType> inline ValueType rightShift_round(const ValueType value, const Int shift) { return (shift >= 0) ? ((value + (ValueType(1) << (shift - 1))) >> shift) : ( value                                   << -shift); }
#if O0043_BEST_EFFORT_DECODING
// when shift = 0, returns value
// when shift = 1, (value + 0 + value[1]) >> 1
// when shift = 2, (value + 1 + value[2]) >> 2
// when shift = 3, (value + 3 + value[3]) >> 3
template <typename ValueType> inline ValueType rightShiftEvenRounding(const ValueType value, const UInt shift) { return (shift == 0) ? value : ((value + (1<<(shift-1))-1 + ((value>>shift)&1)) >> shift) ; }
#endif

// ====================================================================================================================
// Coding tool configuration
// ====================================================================================================================

// AMVP: advanced motion vector prediction
#define AMVP_MAX_NUM_CANDS          2           ///< max number of final candidates
#define AMVP_MAX_NUM_CANDS_MEM      3           ///< max number of candidates
// MERGE
#define MRG_MAX_NUM_CANDS           5

// Reference memory management
#define DYN_REF_FREE                0           ///< dynamic free of reference memories

// Explicit temporal layer QP offset
#define MAX_TLAYER                  7           ///< max number of temporal layer

// Fast estimation of generalized B in low-delay mode
#define GPB_SIMPLE_UNI              1           ///< Simple mode for uni-direction

// Adaptive search range depending on POC difference
#define ADAPT_SR_SCALE              1           ///< division factor for adaptive search range

// Early-skip threshold (encoder)
#define EARLY_SKIP_THRES            1.50        ///< if RD < thres*avg[BestSkipRD]


#define MAX_CHROMA_FORMAT_IDC      3

// TODO: Existing names used for the different NAL unit types can be altered to better reflect the names in the spec.
//       However, the names in the spec are not yet stable at this point. Once the names are stable, a cleanup
//       effort can be done without use of macros to alter the names used to indicate the different NAL unit types.
enum NalUnitType
{
  NAL_UNIT_CODED_SLICE_TRAIL_N = 0, // 0
  NAL_UNIT_CODED_SLICE_TRAIL_R,     // 1

  NAL_UNIT_CODED_SLICE_TSA_N,       // 2
  NAL_UNIT_CODED_SLICE_TSA_R,       // 3

  NAL_UNIT_CODED_SLICE_STSA_N,      // 4
  NAL_UNIT_CODED_SLICE_STSA_R,      // 5

  NAL_UNIT_CODED_SLICE_RADL_N,      // 6
  NAL_UNIT_CODED_SLICE_RADL_R,      // 7

  NAL_UNIT_CODED_SLICE_RASL_N,      // 8
  NAL_UNIT_CODED_SLICE_RASL_R,      // 9

  NAL_UNIT_RESERVED_VCL_N10,
  NAL_UNIT_RESERVED_VCL_R11,
  NAL_UNIT_RESERVED_VCL_N12,
  NAL_UNIT_RESERVED_VCL_R13,
  NAL_UNIT_RESERVED_VCL_N14,
  NAL_UNIT_RESERVED_VCL_R15,

  NAL_UNIT_CODED_SLICE_BLA_W_LP,    // 16
  NAL_UNIT_CODED_SLICE_BLA_W_RADL,  // 17
  NAL_UNIT_CODED_SLICE_BLA_N_LP,    // 18
  NAL_UNIT_CODED_SLICE_IDR_W_RADL,  // 19
  NAL_UNIT_CODED_SLICE_IDR_N_LP,    // 20
  NAL_UNIT_CODED_SLICE_CRA,         // 21
  NAL_UNIT_RESERVED_IRAP_VCL22,
  NAL_UNIT_RESERVED_IRAP_VCL23,

  NAL_UNIT_RESERVED_VCL24,
  NAL_UNIT_RESERVED_VCL25,
  NAL_UNIT_RESERVED_VCL26,
  NAL_UNIT_RESERVED_VCL27,
  NAL_UNIT_RESERVED_VCL28,
  NAL_UNIT_RESERVED_VCL29,
  NAL_UNIT_RESERVED_VCL30,
  NAL_UNIT_RESERVED_VCL31,

  NAL_UNIT_VPS,                     // 32
  NAL_UNIT_SPS,                     // 33
  NAL_UNIT_PPS,                     // 34
  NAL_UNIT_ACCESS_UNIT_DELIMITER,   // 35
  NAL_UNIT_EOS,                     // 36
  NAL_UNIT_EOB,                     // 37
  NAL_UNIT_FILLER_DATA,             // 38
  NAL_UNIT_PREFIX_SEI,              // 39
  NAL_UNIT_SUFFIX_SEI,              // 40

  NAL_UNIT_RESERVED_NVCL41,
  NAL_UNIT_RESERVED_NVCL42,
  NAL_UNIT_RESERVED_NVCL43,
  NAL_UNIT_RESERVED_NVCL44,
  NAL_UNIT_RESERVED_NVCL45,
  NAL_UNIT_RESERVED_NVCL46,
  NAL_UNIT_RESERVED_NVCL47,
  NAL_UNIT_UNSPECIFIED_48,
  NAL_UNIT_UNSPECIFIED_49,
  NAL_UNIT_UNSPECIFIED_50,
  NAL_UNIT_UNSPECIFIED_51,
  NAL_UNIT_UNSPECIFIED_52,
  NAL_UNIT_UNSPECIFIED_53,
  NAL_UNIT_UNSPECIFIED_54,
  NAL_UNIT_UNSPECIFIED_55,
  NAL_UNIT_UNSPECIFIED_56,
  NAL_UNIT_UNSPECIFIED_57,
  NAL_UNIT_UNSPECIFIED_58,
  NAL_UNIT_UNSPECIFIED_59,
  NAL_UNIT_UNSPECIFIED_60,
  NAL_UNIT_UNSPECIFIED_61,
  NAL_UNIT_UNSPECIFIED_62,
  NAL_UNIT_UNSPECIFIED_63,
  NAL_UNIT_INVALID,
};

#if SVC_EXTENSION
class CommonDecoderParams
{
  Int m_targetLayerId;
  Int m_targetOutputLayerSetIdx;
  std::vector<Int> *m_targetDecLayerIdSet;
  Bool m_valueCheckedFlag;
  Int m_highestTId;
public:
  CommonDecoderParams():
#if CONFORMANCE_BITSTREAM_MODE
    m_targetLayerId(MAX_VPS_LAYER_IDX_PLUS1)
#else
    m_targetLayerId(0)
#endif
    , m_targetOutputLayerSetIdx(-1)
    , m_targetDecLayerIdSet(NULL)
    , m_valueCheckedFlag(false)
    , m_highestTId(6)
 {}

  Void setTargetLayerId(const Int x) { m_targetLayerId = x;   }
  Int  getTargetLayerId()            { return m_targetLayerId;}
  
  Void setTargetOutputLayerSetIdx(const Int x) { m_targetOutputLayerSetIdx = x;   }
  Int  getTargetOutputLayerSetIdx()            { return m_targetOutputLayerSetIdx;}

  Void               setTargetDecLayerIdSet(std::vector<Int> *x) { m_targetDecLayerIdSet = x;   }
  std::vector<Int>*  getTargetDecLayerIdSet()                    { return m_targetDecLayerIdSet;}
  
  Void setValueCheckedFlag(const Bool x) { m_valueCheckedFlag = x;   }
  Bool getValueCheckedFlag()            { return m_valueCheckedFlag;}
  
  Void setHighestTId(const Int x) { m_highestTId = x; }
  Int  getHighestTId()            { return m_highestTId; }
};
#endif
//! \}

#endif // end of #ifndef  __COMMONDEF__