Contexts.cpp 31.3 KB
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/* 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) 2010-2018, 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
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

/** \file     Contexts.cpp
 *  \brief    Classes providing probability descriptions and contexts (also contains context initialization values)
 */

#include "Contexts.h"

#include <algorithm>
#include <cstring>
#include <limits>



const uint8_t ProbModelTables::m_NextState[128][2] =
{
  {   2,  1 },{   0,  3 },{   4,  0 },{   1,  5 },{   6,  2 },{   3,  7 },{   8,  4 },{   5,  9 },
  {  10,  4 },{   5, 11 },{  12,  8 },{   9, 13 },{  14,  8 },{   9, 15 },{  16, 10 },{  11, 17 },
  {  18, 12 },{  13, 19 },{  20, 14 },{  15, 21 },{  22, 16 },{  17, 23 },{  24, 18 },{  19, 25 },
  {  26, 18 },{  19, 27 },{  28, 22 },{  23, 29 },{  30, 22 },{  23, 31 },{  32, 24 },{  25, 33 },
  {  34, 26 },{  27, 35 },{  36, 26 },{  27, 37 },{  38, 30 },{  31, 39 },{  40, 30 },{  31, 41 },
  {  42, 32 },{  33, 43 },{  44, 32 },{  33, 45 },{  46, 36 },{  37, 47 },{  48, 36 },{  37, 49 },
  {  50, 38 },{  39, 51 },{  52, 38 },{  39, 53 },{  54, 42 },{  43, 55 },{  56, 42 },{  43, 57 },
  {  58, 44 },{  45, 59 },{  60, 44 },{  45, 61 },{  62, 46 },{  47, 63 },{  64, 48 },{  49, 65 },
  {  66, 48 },{  49, 67 },{  68, 50 },{  51, 69 },{  70, 52 },{  53, 71 },{  72, 52 },{  53, 73 },
  {  74, 54 },{  55, 75 },{  76, 54 },{  55, 77 },{  78, 56 },{  57, 79 },{  80, 58 },{  59, 81 },
  {  82, 58 },{  59, 83 },{  84, 60 },{  61, 85 },{  86, 60 },{  61, 87 },{  88, 60 },{  61, 89 },
  {  90, 62 },{  63, 91 },{  92, 64 },{  65, 93 },{  94, 64 },{  65, 95 },{  96, 66 },{  67, 97 },
  {  98, 66 },{  67, 99 },{ 100, 66 },{  67,101 },{ 102, 68 },{  69,103 },{ 104, 68 },{  69,105 },
  { 106, 70 },{  71,107 },{ 108, 70 },{  71,109 },{ 110, 70 },{  71,111 },{ 112, 72 },{  73,113 },
  { 114, 72 },{  73,115 },{ 116, 72 },{  73,117 },{ 118, 74 },{  75,119 },{ 120, 74 },{  75,121 },
  { 122, 74 },{  75,123 },{ 124, 76 },{  77,125 },{ 124, 76 },{  77,125 },{ 126,126 },{ 127,127 }
};

const uint32_t ProbModelTables::m_EstFracBits[128] =
{
  0x07b23, 0x085f9, 0x074a0, 0x08cbc, 0x06ee4, 0x09354, 0x067f4, 0x09c1b, 0x060b0, 0x0a62a, 0x05a9c, 0x0af5b, 0x0548d, 0x0b955, 0x04f56, 0x0c2a9,
  0x04a87, 0x0cbf7, 0x045d6, 0x0d5c3, 0x04144, 0x0e01b, 0x03d88, 0x0e937, 0x039e0, 0x0f2cd, 0x03663, 0x0fc9e, 0x03347, 0x10600, 0x03050, 0x10f95,
  0x02d4d, 0x11a02, 0x02ad3, 0x12333, 0x0286e, 0x12cad, 0x02604, 0x136df, 0x02425, 0x13f48, 0x021f4, 0x149c4, 0x0203e, 0x1527b, 0x01e4d, 0x15d00,
  0x01c99, 0x166de, 0x01b18, 0x17017, 0x019a5, 0x17988, 0x01841, 0x18327, 0x016df, 0x18d50, 0x015d9, 0x19547, 0x0147c, 0x1a083, 0x0138e, 0x1a8a3,
  0x01251, 0x1b418, 0x01166, 0x1bd27, 0x01068, 0x1c77b, 0x00f7f, 0x1d18e, 0x00eda, 0x1d91a, 0x00e19, 0x1e254, 0x00d4f, 0x1ec9a, 0x00c90, 0x1f6e0,
  0x00c01, 0x1fef8, 0x00b5f, 0x208b1, 0x00ab6, 0x21362, 0x00a15, 0x21e46, 0x00988, 0x2285d, 0x00934, 0x22ea8, 0x008a8, 0x239b2, 0x0081d, 0x24577,
  0x007c9, 0x24ce6, 0x00763, 0x25663, 0x00710, 0x25e8f, 0x006a0, 0x26a26, 0x00672, 0x26f23, 0x005e8, 0x27ef8, 0x005ba, 0x284b5, 0x0055e, 0x29057,
  0x0050c, 0x29bab, 0x004c1, 0x2a674, 0x004a7, 0x2aa5e, 0x0046f, 0x2b32f, 0x0041f, 0x2c0ad, 0x003e7, 0x2ca8d, 0x003ba, 0x2d323, 0x0010c, 0x3bfbb
};

const BinFracBits ProbModelTables::m_BinFracBits_128[128] =
{
  {{0x07b23, 0x085f9}}, {{0x085f9, 0x07b23}},   {{0x074a0, 0x08cbc}}, {{0x08cbc, 0x074a0}},   {{0x06ee4, 0x09354}}, {{0x09354, 0x06ee4}},   {{0x067f4, 0x09c1b}}, {{0x09c1b, 0x067f4}},
  {{0x060b0, 0x0a62a}}, {{0x0a62a, 0x060b0}},   {{0x05a9c, 0x0af5b}}, {{0x0af5b, 0x05a9c}},   {{0x0548d, 0x0b955}}, {{0x0b955, 0x0548d}},   {{0x04f56, 0x0c2a9}}, {{0x0c2a9, 0x04f56}},
  {{0x04a87, 0x0cbf7}}, {{0x0cbf7, 0x04a87}},   {{0x045d6, 0x0d5c3}}, {{0x0d5c3, 0x045d6}},   {{0x04144, 0x0e01b}}, {{0x0e01b, 0x04144}},   {{0x03d88, 0x0e937}}, {{0x0e937, 0x03d88}},
  {{0x039e0, 0x0f2cd}}, {{0x0f2cd, 0x039e0}},   {{0x03663, 0x0fc9e}}, {{0x0fc9e, 0x03663}},   {{0x03347, 0x10600}}, {{0x10600, 0x03347}},   {{0x03050, 0x10f95}}, {{0x10f95, 0x03050}},
  {{0x02d4d, 0x11a02}}, {{0x11a02, 0x02d4d}},   {{0x02ad3, 0x12333}}, {{0x12333, 0x02ad3}},   {{0x0286e, 0x12cad}}, {{0x12cad, 0x0286e}},   {{0x02604, 0x136df}}, {{0x136df, 0x02604}},
  {{0x02425, 0x13f48}}, {{0x13f48, 0x02425}},   {{0x021f4, 0x149c4}}, {{0x149c4, 0x021f4}},   {{0x0203e, 0x1527b}}, {{0x1527b, 0x0203e}},   {{0x01e4d, 0x15d00}}, {{0x15d00, 0x01e4d}},
  {{0x01c99, 0x166de}}, {{0x166de, 0x01c99}},   {{0x01b18, 0x17017}}, {{0x17017, 0x01b18}},   {{0x019a5, 0x17988}}, {{0x17988, 0x019a5}},   {{0x01841, 0x18327}}, {{0x18327, 0x01841}},
  {{0x016df, 0x18d50}}, {{0x18d50, 0x016df}},   {{0x015d9, 0x19547}}, {{0x19547, 0x015d9}},   {{0x0147c, 0x1a083}}, {{0x1a083, 0x0147c}},   {{0x0138e, 0x1a8a3}}, {{0x1a8a3, 0x0138e}},
  {{0x01251, 0x1b418}}, {{0x1b418, 0x01251}},   {{0x01166, 0x1bd27}}, {{0x1bd27, 0x01166}},   {{0x01068, 0x1c77b}}, {{0x1c77b, 0x01068}},   {{0x00f7f, 0x1d18e}}, {{0x1d18e, 0x00f7f}},
  {{0x00eda, 0x1d91a}}, {{0x1d91a, 0x00eda}},   {{0x00e19, 0x1e254}}, {{0x1e254, 0x00e19}},   {{0x00d4f, 0x1ec9a}}, {{0x1ec9a, 0x00d4f}},   {{0x00c90, 0x1f6e0}}, {{0x1f6e0, 0x00c90}},
  {{0x00c01, 0x1fef8}}, {{0x1fef8, 0x00c01}},   {{0x00b5f, 0x208b1}}, {{0x208b1, 0x00b5f}},   {{0x00ab6, 0x21362}}, {{0x21362, 0x00ab6}},   {{0x00a15, 0x21e46}}, {{0x21e46, 0x00a15}},
  {{0x00988, 0x2285d}}, {{0x2285d, 0x00988}},   {{0x00934, 0x22ea8}}, {{0x22ea8, 0x00934}},   {{0x008a8, 0x239b2}}, {{0x239b2, 0x008a8}},   {{0x0081d, 0x24577}}, {{0x24577, 0x0081d}},
  {{0x007c9, 0x24ce6}}, {{0x24ce6, 0x007c9}},   {{0x00763, 0x25663}}, {{0x25663, 0x00763}},   {{0x00710, 0x25e8f}}, {{0x25e8f, 0x00710}},   {{0x006a0, 0x26a26}}, {{0x26a26, 0x006a0}},
  {{0x00672, 0x26f23}}, {{0x26f23, 0x00672}},   {{0x005e8, 0x27ef8}}, {{0x27ef8, 0x005e8}},   {{0x005ba, 0x284b5}}, {{0x284b5, 0x005ba}},   {{0x0055e, 0x29057}}, {{0x29057, 0x0055e}},
  {{0x0050c, 0x29bab}}, {{0x29bab, 0x0050c}},   {{0x004c1, 0x2a674}}, {{0x2a674, 0x004c1}},   {{0x004a7, 0x2aa5e}}, {{0x2aa5e, 0x004a7}},   {{0x0046f, 0x2b32f}}, {{0x2b32f, 0x0046f}},
  {{0x0041f, 0x2c0ad}}, {{0x2c0ad, 0x0041f}},   {{0x003e7, 0x2ca8d}}, {{0x2ca8d, 0x003e7}},   {{0x003ba, 0x2d323}}, {{0x2d323, 0x003ba}},   {{0x0010c, 0x3bfbb}}, {{0x3bfbb, 0x0010c}}
};

const uint32_t ProbModelTables::m_EstFracProb[128] =
{
  0x041b5, 0x03df6, 0x04410, 0x03bbc, 0x04636, 0x039a3, 0x048e6, 0x036f6, 0x04bd3, 0x0340c, 0x04e5d, 0x03185, 0x050fa, 0x02eeb, 0x0534b, 0x02c9b,
  0x0557e, 0x02a6a, 0x057b1, 0x02839, 0x059e4, 0x02608, 0x05bba, 0x02433, 0x05d8f, 0x0225e, 0x05f58, 0x02097, 0x060f7, 0x01efa, 0x06288, 0x01d69,
  0x06427, 0x01bcb, 0x06581, 0x01a72, 0x066d4, 0x0191f, 0x0682f, 0x017c6, 0x0693e, 0x016b7, 0x06a80, 0x01576, 0x06b7e, 0x01478, 0x06ca1, 0x01356,
  0x06da2, 0x01255, 0x06e88, 0x01170, 0x06f67, 0x01092, 0x0703e, 0x00fba, 0x07116, 0x00ee3, 0x071b7, 0x00e42, 0x0728f, 0x00d6a, 0x07323, 0x00cd6,
  0x073e9, 0x00c11, 0x0747d, 0x00b7d, 0x0751e, 0x00add, 0x075b2, 0x00a49, 0x0761b, 0x009e0, 0x07697, 0x00964, 0x07719, 0x008e2, 0x07794, 0x00867,
  0x077f1, 0x0080b, 0x0785b, 0x007a1, 0x078c9, 0x00733, 0x07932, 0x006ca, 0x0798f, 0x0066d, 0x079c6, 0x00636, 0x07a23, 0x005da, 0x07a7f, 0x0057d,
  0x07ab7, 0x00546, 0x07afb, 0x00502, 0x07b32, 0x004cb, 0x07b7d, 0x00480, 0x07b9c, 0x00461, 0x07bf8, 0x00405, 0x07c17, 0x003e6, 0x07c55, 0x003a9,
  0x07c8c, 0x00371, 0x07cbf, 0x0033f, 0x07cd0, 0x0032e, 0x07cf6, 0x00308, 0x07d2c, 0x002d1, 0x07d52, 0x002ab, 0x07d71, 0x0028c, 0x07f46, 0x000b5
};

const uint8_t ProbModelTables::m_LPSTable_64_4[64][4] =
{
  { 128, 176, 208, 240 },
  { 128, 167, 197, 227 },
  { 128, 158, 187, 216 },
  { 123, 150, 178, 205 },
  { 116, 142, 169, 195 },
  { 111, 135, 160, 185 },
  { 105, 128, 152, 175 },
  { 100, 122, 144, 166 },
  {  95, 116, 137, 158 },
  {  90, 110, 130, 150 },
  {  85, 104, 123, 142 },
  {  81,  99, 117, 135 },
  {  77,  94, 111, 128 },
  {  73,  89, 105, 122 },
  {  69,  85, 100, 116 },
  {  66,  80,  95, 110 },
  {  62,  76,  90, 104 },
  {  59,  72,  86,  99 },
  {  56,  69,  81,  94 },
  {  53,  65,  77,  89 },
  {  51,  62,  73,  85 },
  {  48,  59,  69,  80 },
  {  46,  56,  66,  76 },
  {  43,  53,  63,  72 },
  {  41,  50,  59,  69 },
  {  39,  48,  56,  65 },
  {  37,  45,  54,  62 },
  {  35,  43,  51,  59 },
  {  33,  41,  48,  56 },
  {  32,  39,  46,  53 },
  {  30,  37,  43,  50 },
  {  29,  35,  41,  48 },
  {  27,  33,  39,  45 },
  {  26,  31,  37,  43 },
  {  24,  30,  35,  41 },
  {  23,  28,  33,  39 },
  {  22,  27,  32,  37 },
  {  21,  26,  30,  35 },
  {  20,  24,  29,  33 },
  {  19,  23,  27,  31 },
  {  18,  22,  26,  30 },
  {  17,  21,  25,  28 },
  {  16,  20,  23,  27 },
  {  15,  19,  22,  25 },
  {  14,  18,  21,  24 },
  {  14,  17,  20,  23 },
  {  13,  16,  19,  22 },
  {  12,  15,  18,  21 },
  {  12,  14,  17,  20 },
  {  11,  14,  16,  19 },
  {  11,  13,  15,  18 },
  {  10,  12,  15,  17 },
  {  10,  12,  14,  16 },
  {   9,  11,  13,  15 },
  {   9,  11,  12,  14 },
  {   8,  10,  12,  14 },
  {   8,   9,  11,  13 },
  {   7,   9,  11,  12 },
  {   7,   9,  10,  12 },
  {   7,   8,  10,  11 },
  {   6,   8,   9,  11 },
  {   6,   7,   9,  10 },
  {   6,   7,   8,   9 },
  {   2,   2,   2,   2 }
};

const uint8_t ProbModelTables::m_RenormTable_32[32] =
{
  6,  5,  4,  4,
  3,  3,  3,  3,
  2,  2,  2,  2,
  2,  2,  2,  2,
  1,  1,  1,  1,
  1,  1,  1,  1,
  1,  1,  1,  1,
  1,  1,  1,  1
};





void BinProbModel_Std::init( int qp, int initId )
{
  int slope     = ( ( initId >>  4 )  * 5 ) - 45;
  int offset    = ( ( initId  & 15 ) << 3 ) - 16;
  int inistate  = ( ( slope   * qp ) >> 4 ) + offset;
  if( inistate >= 64 )
  {
    m_State     = ( std::min( 62, inistate - 64 ) << 1 ) + 1;
  }
  else
  {
    m_State     = ( std::min( 62, 63 - inistate ) << 1 );
  }
}




CtxSet::CtxSet( std::initializer_list<CtxSet> ctxSets )
{
  uint16_t  minOffset = std::numeric_limits<uint16_t>::max();
  uint16_t  maxOffset = 0;
  for( auto iter = ctxSets.begin(); iter != ctxSets.end(); iter++ )
  {
    minOffset = std::min<uint16_t>( minOffset, (*iter).Offset              );
    maxOffset = std::max<uint16_t>( maxOffset, (*iter).Offset+(*iter).Size );
  }
  Offset  = minOffset;
  Size    = maxOffset - minOffset;
}





const std::vector<uint8_t>& ContextSetCfg::getInitTable( unsigned initId )
{
  CHECK( initId >= (unsigned)sm_InitTables.size(),
         "Invalid initId (" << initId << "), only " << sm_InitTables.size() << " tables defined." );
  return sm_InitTables[initId];
}


CtxSet ContextSetCfg::addCtxSet( std::initializer_list<std::initializer_list<uint8_t>> initSet2d )
{
  const std::size_t startIdx  = sm_InitTables[0].size();
  const std::size_t numValues = ( *initSet2d.begin() ).size();
        std::size_t setId     = 0;
  for( auto setIter = initSet2d.begin(); setIter != initSet2d.end() && setId < sm_InitTables.size(); setIter++, setId++ )
  {
    const std::initializer_list<uint8_t>& initSet   = *setIter;
    std::vector<uint8_t>&           initTable = sm_InitTables[setId];
    CHECK( initSet.size() != numValues,
           "Number of init values do not match for all sets (" << initSet.size() << " != " << numValues << ")." );
    initTable.resize( startIdx + numValues );
    std::size_t elemId = startIdx;
    for( auto elemIter = ( *setIter ).begin(); elemIter != ( *setIter ).end(); elemIter++, elemId++ )
    {
      initTable[elemId] = *elemIter;
    }
  }
  return CtxSet( (uint16_t)startIdx, (uint16_t)numValues );
}



#define CNU 154 // dummy initialization value for unused context models 'Context model Not Used'
std::vector<std::vector<uint8_t>> ContextSetCfg::sm_InitTables( NUMBER_OF_SLICE_TYPES );

const CtxSet ContextSetCfg::SplitFlag = ContextSetCfg::addCtxSet
({
265 266 267 268 269
#if JVET_L0361_SPLIT_CTX
  {  107, 139, 126, 107, 139, 126, },
  {  107, 139, 126, 107, 139, 126, },
  {  139, 141, 157, 139, 141, 157, },
#else
270 271 272
  {  107, 139, 126, 255,   0,},
  {  107, 139, 126, 255,   0,},
  {  139, 141, 157, 255,   0,},
273
#endif
274 275 276 277
});

const CtxSet ContextSetCfg::BTSplitFlag = ContextSetCfg::addCtxSet
({
278 279 280 281 282 283
#if JVET_L0361_SPLIT_CTX
  // |-------- 1st bin, 9 ctx for luma + 3 ctx for chroma------| |--2nd bin--| |3rd bin|
  {  107, 139, 126, 107, 139, 126, 107, 139, 126, 107, 139, 126, 154, 154, 154, 154,},
  {  107, 139, 126, 107, 139, 126, 107, 139, 126, 107, 139, 126, 154, 154, 154, 154,},
  {  139, 141, 157, 139, 141, 157, 139, 141, 157, 139, 141, 157, 154, 154, 154, 154,},
#else
284 285 286
  {  107, 139, 126, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
  {  107, 139, 126, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
  {  139, 141, 157, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
287
#endif
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305
});

const CtxSet ContextSetCfg::SkipFlag = ContextSetCfg::addCtxSet
({
  {  197, 185, 201,},
  {  197, 185, 201,},
  {  CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::MergeFlag = ContextSetCfg::addCtxSet
({
  {  154,},
  {  110,},
  {  CNU,},
});

const CtxSet ContextSetCfg::MergeIdx = ContextSetCfg::addCtxSet
({
306 307 308 309 310
#if JVET_L0194_ONE_CTX_FOR_MRG_IDX
  { 137,},
  { 122,},
  { CNU,},
#else
311 312 313
  {  137, CNU, CNU, CNU, CNU,},
  {  122, CNU, CNU, CNU, CNU,},
  {  CNU, CNU, CNU, CNU, CNU,},
314
#endif
315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
});

const CtxSet ContextSetCfg::PartSize = ContextSetCfg::addCtxSet
({
  {  154, 139, 154, 154,},
  {  154, 139, 154, 154,},
  {  184, CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::PredMode = ContextSetCfg::addCtxSet
({
  {  134,},
  {  149,},
  {  CNU,},
});

const CtxSet ContextSetCfg::IPredMode[] =
{
  ContextSetCfg::addCtxSet
  ({
    { 183 },
    { 154 },
    { 184 },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  139, 152, 139, 154, 154, 154, 154, 154, 154, 154, 154, 154,  },
    {  139, 152, 139, 154, 154, 154, 154, 154, 154, 154, 154, 154,  },
    {  139,  63, 139, 154, 154, 154, 154, 154, 154, 154, 154, 154,  },
  }),
};

const CtxSet ContextSetCfg::PdpcFlag = ContextSetCfg::addCtxSet
({
  {  107,},
  {  107,},
  {  139,},
});

const CtxSet ContextSetCfg::DeltaQP = ContextSetCfg::addCtxSet
({
  {  154, 154, 154,},
  {  154, 154, 154,},
  {  154, 154, 154,},
});

const CtxSet ContextSetCfg::InterDir = ContextSetCfg::addCtxSet
({
  {   95,  79,  63,  31,  31,},
  {   95,  79,  63,  31,  31,},
  {  CNU, CNU, CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::RefPic = ContextSetCfg::addCtxSet
({
  {  153, 153,},
  {  153, 153,},
  {  CNU, CNU,},
});

const CtxSet ContextSetCfg::AffineFlag = ContextSetCfg::addCtxSet
({
  {  197, 185, 201,},
  {  197, 185, 201,},
  {  CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::AffineType = ContextSetCfg::addCtxSet
({
  { 92,  },
  { 77,  },
  { CNU, },
});

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#if JVET_L0646_GBI
const CtxSet ContextSetCfg::GBiIdx = ContextSetCfg::addCtxSet
({
  // 4 ctx for 1st bin; 1 ctx for each of rest bins
  { 95,  79,  63,  31,  31,  31,  31, },
  { 95,  79,  63,  31,  31,  31,  31, },
  { CNU, CNU, CNU, CNU, CNU, CNU, CNU, },
  });
#endif
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const CtxSet ContextSetCfg::Mvd = ContextSetCfg::addCtxSet
({
  {  169, 198,},
  {  140, 198,},
  {  CNU, CNU,},
});

const CtxSet ContextSetCfg::TransSubdivFlag = ContextSetCfg::addCtxSet
({
  {  224, 167, 122, 122, 122},
  {  124, 138,  94,  94,  94},
  {  153, 138, 138, 138, 138},
});

const CtxSet ContextSetCfg::QtRootCbf = ContextSetCfg::addCtxSet
({
  {   79,},
  {   79,},
  {  CNU,},
});

const CtxSet ContextSetCfg::QtCbf[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  153, 111,  },
    {  153, 111,  },
    {  111, 141,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  149,  92, 167, 154, 154,  },
    {  149, 107, 167, 154, 154,  },
    {   94, 138, 182, 154, 154,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    { 149, 149, },
    { 149, 149, },
    {  94,  94, },
  }),
};

const CtxSet ContextSetCfg::SigCoeffGroup[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  121, 140,  },
    {  121, 140,  },
    {   91, 171,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {   61, 154,  },
    {   61, 154,  },
    {  134, 141,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  122, 143,  },
    {   78, 111,  },
    {  135, 155,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {   91, 141,  },
    {   60, 140,  },
    {  104, 139,  },
  }),
};

const CtxSet ContextSetCfg::SigFlag[] =
{
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#if JVET_L0274
  ContextSetCfg::addCtxSet
  ({
    {  120, 152, 167, 153, 168, 169, 119, 167, 197, 183, 183, 170, 209, 213, 183, 183, 169, 185, },
    {  149, 152, 167, 168, 183, 140, 149, 182, 168, 183, 169, 170, 195, 213, 183, 198, 184, 156, },
    {  120, 138, 153, 154, 140, 126, 120, 139, 154, 155, 155, 142, 137, 185, 169, 185, 171, 159, },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  148, 167, 153, 139, 154, 140, 166, 199, 183, 184, 184, 157,  },
    {  134, 168, 168, 139, 169, 155, 166, 229, 198, 229, 185, 157,  },
    {  119, 168, 153, 140, 140, 141, 167, 200, 155, 172, 142, 158,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  152, 127, 173, 201, 187, 173, 226, 188, 188, 217, 188, 174, 182, 223, 223, 223, 223, 223, },
    {  123, 142, 202, 172, 157, 203, 138, 173, 218, 188, 173, 175, 168, 223, 223, 223, 223, 223, },
    {  108, 157, 173, 173, 218, 189, 123, 175, 159, 175, 190, 251,  79, 223, 223, 223, 223, 223, },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  196, 156, 143, 158, 172, 216, 168, 223, 223, 223, 191, 223,  },
    {  182, 141, 158, 186, 142, 173, 183, 223, 223, 223, 222, 223,  },
    {  152, 158, 157, 187, 204, 175, 170, 223, 223, 237, 223, 223,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  137, 142, 189, 173, 187, 174, 241, 175, 175, 174, 174, 204, 210, 223, 223, 223, 223, 223, },
    {  123, 172, 175, 158, 158, 233, 138, 175, 190, 175, 188, 175, 196, 223, 223, 223, 223, 223, },
    {  107, 143, 219, 188, 233, 190,  63, 250, 205, 252, 220, 251,  63, 223, 223, 223, 223, 253, },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  167, 185, 159, 158, 159, 189, 196, 223, 223, 223, 223, 223,  },
    {  167, 141, 175, 143, 172, 159, 182, 223, 223, 223, 223, 223,  },
    {  166, 159, 158, 232, 158, 174, 183, 238, 223, 223, 223, 223,  },
  }),
#else
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  ContextSetCfg::addCtxSet
  ({
    {  106, 167, 182, 124, 139, 169, 134, 167, 197, 183, 183, 184, 209, 198, 168, 168, 183, 170, CNU, CNU,  },
    {  135, 152, 167, 153, 168, 140, 149, 182, 153, 183, 154, 155, 180, 198, 197, 183, 169, 170, CNU, CNU,  },
    {  121, 138, 124, 139, 125, 111, 135, 139, 154, 140, 155, 127, 107, 185, 169, 170, 156, 143, CNU, CNU,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  177, 196, 153, 124, 198, 183, 166, 213, 226, 198, 198, 156,  },
    {  134, 168, 168, 154, 169, 199, 166, 214, 227, 229, 185, 142,  },
    {  149, 168, 153, 111, 140, 126, 182, 200, 111, 143, 142, 158,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  181, 127, 173, 201, 187, 173, 226, 173, 188, 202, 173, 188, 196, 223, 237, 223, 221, 223, CNU, CNU,  },
    {  123, 142, 202, 157, 157, 188, 138, 158, 203, 173, 158, 174, 182, 223, 223, 223, 206, 237, CNU, CNU,  },
    {  108, 157, 173, 158, 218, 189, 123, 159, 159, 174, 189, 204,  79, 223, 223, 207, 253, 191, CNU, CNU,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  210, 170, 143, 143, 201, 244, 182, 223, 223, 223, 159, 223,  },
    {  167, 155, 158, 186, 127, 158, 197, 223, 223, 223, 206, 237,  },
    {  137, 158, 157, 187, 204, 159, 185, 223, 238, 220, 253, 237,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  137, 142, 159, 158, 187, 159, 241, 174, 174, 159, 159, 203, 210, 223, 223, 223, 223, 223, CNU, CNU,  },
    {  123, 157, 174, 143, 143, 203, 138, 159, 189, 159, 173, 174, 196, 223, 223, 223, 223, 223, CNU, CNU,  },
    {  107, 143, 218, 173, 218, 189,  63, 219, 189, 175, 189, 204,  63, 223, 223, 223, 253, 191, CNU, CNU,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  196, 199, 143, 172, 158, 203, 196, 223, 223, 223, 223, 223,  },
    {  167, 155, 159, 157, 157, 158, 182, 223, 223, 223, 223, 223,  },
    {  181, 159, 143, 232, 143, 173, 169, 237, 223, 223, 238, 253,  },
  }),
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#endif
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};


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#if JVET_L0274
const CtxSet ContextSetCfg::ParFlag[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  105, 119, 151, 152, 153, 153, 135, 152, 182, 153, 168, 136, 182, 153, 168, 139, 166, 168, 139, 168, 154,  },
    {  120, 119, 151, 167, 138, 168, 135, 152, 153, 153, 139, 136, 153, 153, 168, 139, 137, 168, 168, 139, 139,  },
    {  135, 150, 152, 138, 153, 153, 151, 123, 153, 168, 139, 152, 153, 153, 139, 139, 138, 168, 139, 154, 139,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  105, 135, 152, 167, 153, 124, 151, 168, 169, 153, 124,  },
    {  134, 150, 152, 153, 153, 153, 166, 168, 168, 139, 139,  },
    {  135, 121, 167, 168, 138, 153, 167, 139, 154, 139, 154,  },
  }),
};

const CtxSet ContextSetCfg::GtxFlag[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  73,   0,  58, 119, 150, 137,  42,  73, 120, 136, 123,  58, 149, 151, 152, 153, 134, 136, 152, 153, 125,  },
    {  88,   0, 102, 104, 150, 122, 101,  89, 150, 151, 138,  88, 120, 122, 152, 153, 105, 107, 123, 153, 154,  },
    { 134, 161, 149, 121, 122, 138,  88, 120, 107, 108, 109, 105, 107, 123, 109, 124, 151, 138, 139, 154, 140,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  87,  57,  90, 107, 107,  63, 119,  91, 152, 124, 140,  },
    { 101,   0, 105, 121, 107,  93, 118, 106, 108, 124, 154,  },
    { 179,  72,  90, 121, 122, 123,  75,  76, 123, 139, 170,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  89, 103, 121, 137, 138, 139, 119, 137, 138, 139, 125, 135, 167, 168, 154, 140, 136, 153, 183, 155, 185,  },
    { 118,   0, 136, 152, 153, 154, 134, 152, 153, 139, 140, 150, 138, 139, 154, 155, 151, 153, 169, 140, 200,  },
    { 164, 149, 137, 153, 124, 125, 151, 138, 139, 125, 125, 152, 139, 140, 140, 111, 153, 154, 155, 170, 127,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  27, 149, 137, 153, 139, 125, 151, 154, 170, 127, 127,  },
    { 132, 135, 152, 139, 139, 125, 151, 154, 155, 141, 142,  },
    { 165, 121, 138, 139, 139, 125, 138, 154, 156, 171, 127,  },
  }),
};
#else
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const CtxSet ContextSetCfg::ParFlag[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  162, 134, 136, 167, 153, 138, 135, 167, 182, 168, 168, 150, 182, 153, 168, 110, 180, 168, 139, 168, 154,  },
    {  133, 163, 151, 167, 138, 168, 149, 152, 153, 153, 124, 150, 153, 153, 168, 139, 166, 168, 168, 139, 139,  },
    {  134, 120, 152, 123, 153, 153, 136, 123, 153, 168, 154, 152, 153, 153, 124, 139, 123, 168, 139, 154, 139,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {   57, 192, 194, 225, 153, 139, 209, 168, 213, 123,  95,  },
    {  147, 164, 137, 153, 124, 153, 210, 183, 183, 154, 139,  },
    {  134, 121, 182, 183, 138, 183, 198, 154, 154, 124, 154,  },
  }),
};

const CtxSet ContextSetCfg::GtxFlag[] =
{
  ContextSetCfg::addCtxSet
  ({
    {   59,  57,  59, 133, 164, 165, 117, 147, 134, 150, 137, 133, 163, 121, 166, 167, 163, 135, 136, 181, 139,  },
    {   45,  57,  58,  44, 149,  91,  73,  89, 105,  91, 122,  74, 105, 121, 122, 138, 119, 106, 107, 152, 139,  },
    {  135,  43, 119,  90,  76, 107,  74,  75, 106,  77,  93, 105,  91, 122,  93,  94, 150, 136, 123, 153, 125,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  133,   3,  14, 120, 135,  91, 179, 103, 194,  94, 111,  },
    {  118, 102, 134, 135, 122, 123, 163, 120, 122, 153, 169,  },
    {  195,  88,  74, 105, 152, 138, 120,  90, 107, 139, 184,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {    3,   3, 103, 119,  91, 151,   3, 148, 194, 152, 138, 147, 164, 166, 167, 168, 133, 180, 196, 139, 169,  },
    {    3,   3, 118, 120, 106, 152,   3, 119, 121, 122, 153, 118, 135, 166, 138, 139, 148, 151, 182, 168, 184,  },
    {  132, 102, 104, 121,  92,  93, 104, 106, 122, 123,  94, 105, 137, 153, 139,  95, 121, 123, 139, 154, 126,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {    3,   3, 176, 193, 137, 181, 161, 137, 183, 155, 111,  },
    {    3,   3, 134, 137, 123, 124, 147, 167, 169, 199, 156,  },
    {  147,  73, 164, 151, 107, 109, 120, 152, 140, 185, 111,  },
  }),
};
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#endif
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const CtxSet ContextSetCfg::LastX[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  125, 110, 124, 110,  95,  94, 125, 111, 111,  79, 125, 126, 111, 111,  79, 126, 111, 111,  79, CNU, CNU, CNU, CNU, CNU, CNU,  },
    {  125, 110,  94, 110,  95,  79, 125, 111, 110,  78, 110, 111, 111,  95,  94, 111, 111,  95,  94, CNU, CNU, CNU, CNU, CNU, CNU,  },
    {  110, 110, 124, 125, 140, 153, 125, 127, 140, 109, 111, 143, 127, 111,  79, 143, 127, 111,  79, CNU, CNU, CNU, CNU, CNU, CNU,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  108, 123,  93, 154,  },
    {  108, 123, 108, 154,  },
    {  108, 123,  63, 154,  },
  }),
};

const CtxSet ContextSetCfg::LastY[] =
{
  ContextSetCfg::addCtxSet
  ({
    {  125, 110, 124, 110,  95,  94, 125, 111, 111,  79, 125, 126, 111, 111,  79, 126, 111, 111,  79, CNU, CNU, CNU, CNU, CNU, CNU,  },
    {  125, 110,  94, 110,  95,  79, 125, 111, 110,  78, 110, 111, 111,  95,  94, 111, 111,  95,  94, CNU, CNU, CNU, CNU, CNU, CNU,  },
    {  110, 110, 124, 125, 140, 153, 125, 127, 140, 109, 111, 143, 127, 111,  79, 143, 127, 111,  79, CNU, CNU, CNU, CNU, CNU, CNU,  },
  }),
  ContextSetCfg::addCtxSet
  ({
    {  108, 123,  93, 154,  },
    {  108, 123, 108, 154,  },
    {  108, 123,  63, 154,  },
  }),
};


const CtxSet ContextSetCfg::MVPIdx = ContextSetCfg::addCtxSet
({
  {  168,},
  {  168,},
  {  CNU,},
});

const CtxSet ContextSetCfg::SaoMergeFlag = ContextSetCfg::addCtxSet
({
  {  153,},
  {  153,},
  {  153,},
});

const CtxSet ContextSetCfg::SaoTypeIdx = ContextSetCfg::addCtxSet
({
  {  160,},
  {  185,},
  {  200,},
});

const CtxSet ContextSetCfg::TransformSkipFlag = ContextSetCfg::addCtxSet
({
  {  139, 139,},
  {  139, 139,},
  {  139, 139,},
});

const CtxSet ContextSetCfg::TransquantBypassFlag = ContextSetCfg::addCtxSet
({
  {  154,},
  {  154,},
  {  154,},
});

const CtxSet ContextSetCfg::RdpcmFlag = ContextSetCfg::addCtxSet
({
  {  139, 139,},
  {  139, 139,},
  {  CNU, CNU,},
});

const CtxSet ContextSetCfg::RdpcmDir = ContextSetCfg::addCtxSet
({
  {  139, 139,},
  {  139, 139,},
  {  CNU, CNU,},
});

const CtxSet ContextSetCfg::EMTTuIndex = ContextSetCfg::addCtxSet
({
  {  CNU, CNU, CNU, CNU,},
  {  CNU, CNU, CNU, CNU,},
  {  CNU, CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::EMTCuFlag = ContextSetCfg::addCtxSet
({
  {  CNU, CNU, CNU, CNU, CNU, CNU,},
  {  CNU, CNU, CNU, CNU, CNU, CNU,},
  {  CNU, CNU, CNU, CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::CrossCompPred = ContextSetCfg::addCtxSet
({
  {  154, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
  {  154, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
  {  154, 154, 154, 154, 154, 154, 154, 154, 154, 154,},
});

const CtxSet ContextSetCfg::ChromaQpAdjFlag = ContextSetCfg::addCtxSet
({
  {  154,},
  {  154,},
  {  154,},
});

const CtxSet ContextSetCfg::ChromaQpAdjIdc = ContextSetCfg::addCtxSet
({
  {  154,},
  {  154,},
  {  154,},
});

const CtxSet ContextSetCfg::ImvFlag = ContextSetCfg::addCtxSet
({
  {  197, 185, 201, 185,},
  {  197, 185, 201, 185,},
  {  CNU, CNU, CNU, CNU,},
});

const CtxSet ContextSetCfg::ctbAlfFlag =
{
  ContextSetCfg::addCtxSet
  ( {
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#if JVET_L0392_ALF_INIT_STATE
    { 100, 153, 200, 100, 153, 200, 100, 153, 200 },
    { 100, 153, 200, 100, 153, 200, 100, 153, 200 },
    { 100, 153, 200, 100, 153, 200, 100, 153, 200 },
#else
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    { 100, 100, 100, 100, 100, 100, 100, 100, 100 },
    { 153, 153, 153, 153, 153, 153, 153, 153, 153 },
    { 200, 200, 200, 200, 200, 200, 200, 200, 200 },
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#endif
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    } )
};

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#if JVET_L0100_MULTI_HYPOTHESIS_INTRA
const CtxSet ContextSetCfg::MHIntraFlag = ContextSetCfg::addCtxSet
({
  { 154, },
  { 110, },
  { CNU, },
});

const CtxSet ContextSetCfg::MHIntraPredMode = ContextSetCfg::addCtxSet
({
  { 183, CNU, CNU, CNU, },
  { 154, CNU, CNU, CNU, },
  { 184, CNU, CNU, CNU, },
});
#endif
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const unsigned ContextSetCfg::NumberOfContexts = (unsigned)ContextSetCfg::sm_InitTables[0].size();


// combined sets
const CtxSet ContextSetCfg::Sao = { ContextSetCfg::SaoMergeFlag, ContextSetCfg::SaoTypeIdx };



template <class BinProbModel>
CtxStore<BinProbModel>::CtxStore()
  : m_CtxBuffer ()
  , m_Ctx       ( nullptr )
{}

template <class BinProbModel>
CtxStore<BinProbModel>::CtxStore( bool dummy )
  : m_CtxBuffer ( ContextSetCfg::NumberOfContexts )
  , m_Ctx       ( m_CtxBuffer.data() )
{}

template <class BinProbModel>
CtxStore<BinProbModel>::CtxStore( const CtxStore<BinProbModel>& ctxStore )
  : m_CtxBuffer ( ctxStore.m_CtxBuffer )
  , m_Ctx       ( m_CtxBuffer.data() )
{}

template <class BinProbModel>
void CtxStore<BinProbModel>::init( int qp, int initId )
{
  const std::vector<uint8_t>& initTable = ContextSetCfg::getInitTable( initId );
  CHECK( m_CtxBuffer.size() != initTable.size(),
        "Size of init table (" << initTable.size() << ") does not match size of context buffer (" << m_CtxBuffer.size() << ")." );
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  int clippedQP = Clip3( 0, MAX_QP, qp );
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  for( std::size_t k = 0; k < m_CtxBuffer.size(); k++ )
  {
    m_CtxBuffer[k].init( clippedQP, initTable[k] );
  }
}

template <class BinProbModel>
void CtxStore<BinProbModel>::setWinSizes( const std::vector<uint8_t>& log2WindowSizes )
{
  CHECK( m_CtxBuffer.size() != log2WindowSizes.size(),
        "Size of window size table (" << log2WindowSizes.size() << ") does not match size of context buffer (" << m_CtxBuffer.size() << ")." );
  for( std::size_t k = 0; k < m_CtxBuffer.size(); k++ )
  {
    m_CtxBuffer[k].setLog2WindowSize( log2WindowSizes[k] );
  }
}

template <class BinProbModel>
void CtxStore<BinProbModel>::loadPStates( const std::vector<uint16_t>& probStates )
{
  CHECK( m_CtxBuffer.size() != probStates.size(),
        "Size of prob states table (" << probStates.size() << ") does not match size of context buffer (" << m_CtxBuffer.size() << ")." );
  for( std::size_t k = 0; k < m_CtxBuffer.size(); k++ )
  {
    m_CtxBuffer[k].setState( probStates[k] );
  }
}

template <class BinProbModel>
void CtxStore<BinProbModel>::savePStates( std::vector<uint16_t>& probStates ) const
{
  probStates.resize( m_CtxBuffer.size(), uint16_t(0) );
  for( std::size_t k = 0; k < m_CtxBuffer.size(); k++ )
  {
    probStates[k] = m_CtxBuffer[k].getState();
  }
}





template class CtxStore<BinProbModel_Std>;





Ctx::Ctx()                                  : m_BPMType( BPM_Undefined )                        {}
Ctx::Ctx( const BinProbModel_Std*   dummy ) : m_BPMType( BPM_Std   ), m_CtxStore_Std  ( true )  {}

Ctx::Ctx( const Ctx& ctx )
  : m_BPMType         ( ctx.m_BPMType )
  , m_CtxStore_Std    ( ctx.m_CtxStore_Std    )
{
  ::memcpy( m_GRAdaptStats, ctx.m_GRAdaptStats, sizeof( unsigned ) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS );
}