Mercurial > hg > forks > libbpg

comparison jctvc/TLibEncoder/TEncSbac.cpp @ 0:772086c29cc7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial import.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 16 Nov 2016 11:16:33 +0200
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:772086c29cc7
1 /* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license.
5 *
6 * Copyright (c) 2010-2014, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 * * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 * be used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /** \file TEncSbac.cpp
35 \brief SBAC encoder class
36 */
37
38 #include "TEncTop.h"
39 #include "TEncSbac.h"
40 #include "TLibCommon/TComTU.h"
41
42 #include <map>
43 #include <algorithm>
44
45 #if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST
46 #include "../TLibCommon/Debug.h"
47 #endif
48
49
50 //! \ingroup TLibEncoder
51 //! \{
52
53 // ====================================================================================================================
54 // Constructor / destructor / create / destroy
55 // ====================================================================================================================
56
57 TEncSbac::TEncSbac()
58 // new structure here
59 : m_pcBitIf ( NULL )
60 , m_pcSlice ( NULL )
61 , m_pcBinIf ( NULL )
62 , m_numContextModels ( 0 )
63 , m_cCUSplitFlagSCModel ( 1, 1, NUM_SPLIT_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
64 , m_cCUSkipFlagSCModel ( 1, 1, NUM_SKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
65 , m_cCUMergeFlagExtSCModel ( 1, 1, NUM_MERGE_FLAG_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels)
66 , m_cCUMergeIdxExtSCModel ( 1, 1, NUM_MERGE_IDX_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels)
67 , m_cCUPartSizeSCModel ( 1, 1, NUM_PART_SIZE_CTX , m_contextModels + m_numContextModels, m_numContextModels)
68 , m_cCUPredModeSCModel ( 1, 1, NUM_PRED_MODE_CTX , m_contextModels + m_numContextModels, m_numContextModels)
69 , m_cCUIntraPredSCModel ( 1, 1, NUM_ADI_CTX , m_contextModels + m_numContextModels, m_numContextModels)
70 , m_cCUChromaPredSCModel ( 1, 1, NUM_CHROMA_PRED_CTX , m_contextModels + m_numContextModels, m_numContextModels)
71 , m_cCUDeltaQpSCModel ( 1, 1, NUM_DELTA_QP_CTX , m_contextModels + m_numContextModels, m_numContextModels)
72 , m_cCUInterDirSCModel ( 1, 1, NUM_INTER_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels)
73 , m_cCURefPicSCModel ( 1, 1, NUM_REF_NO_CTX , m_contextModels + m_numContextModels, m_numContextModels)
74 , m_cCUMvdSCModel ( 1, 1, NUM_MV_RES_CTX , m_contextModels + m_numContextModels, m_numContextModels)
75 , m_cCUQtCbfSCModel ( 1, NUM_QT_CBF_CTX_SETS, NUM_QT_CBF_CTX_PER_SET , m_contextModels + m_numContextModels, m_numContextModels)
76 , m_cCUTransSubdivFlagSCModel ( 1, 1, NUM_TRANS_SUBDIV_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
77 , m_cCUQtRootCbfSCModel ( 1, 1, NUM_QT_ROOT_CBF_CTX , m_contextModels + m_numContextModels, m_numContextModels)
78 , m_cCUSigCoeffGroupSCModel ( 1, 2, NUM_SIG_CG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
79 , m_cCUSigSCModel ( 1, 1, NUM_SIG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
80 , m_cCuCtxLastX ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels)
81 , m_cCuCtxLastY ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels)
82 , m_cCUOneSCModel ( 1, 1, NUM_ONE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
83 , m_cCUAbsSCModel ( 1, 1, NUM_ABS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
84 , m_cMVPIdxSCModel ( 1, 1, NUM_MVP_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels)
85 , m_cSaoMergeSCModel ( 1, 1, NUM_SAO_MERGE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
86 , m_cSaoTypeIdxSCModel ( 1, 1, NUM_SAO_TYPE_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels)
87 , m_cTransformSkipSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_TRANSFORMSKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
88 , m_CUTransquantBypassFlagSCModel ( 1, 1, NUM_CU_TRANSQUANT_BYPASS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
89 , m_explicitRdpcmFlagSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
90 , m_explicitRdpcmDirSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels)
91 , m_cCrossComponentPredictionSCModel ( 1, 1, NUM_CROSS_COMPONENT_PREDICTION_CTX , m_contextModels + m_numContextModels, m_numContextModels)
92 , m_ChromaQpAdjFlagSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
93 , m_ChromaQpAdjIdcSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_IDC_CTX , m_contextModels + m_numContextModels, m_numContextModels)
94 {
95 assert( m_numContextModels <= MAX_NUM_CTX_MOD );
96 }
97
98 TEncSbac::~TEncSbac()
99 {
100 }
101
102 // ====================================================================================================================
103 // Public member functions
104 // ====================================================================================================================
105
106 Void TEncSbac::resetEntropy ()
107 {
108 Int iQp = m_pcSlice->getSliceQp();
109 SliceType eSliceType = m_pcSlice->getSliceType();
110
111 Int encCABACTableIdx = m_pcSlice->getPPS()->getEncCABACTableIdx();
112 if (!m_pcSlice->isIntra() && (encCABACTableIdx==B_SLICE || encCABACTableIdx==P_SLICE) && m_pcSlice->getPPS()->getCabacInitPresentFlag())
113 {
114 eSliceType = (SliceType) encCABACTableIdx;
115 }
116
117 m_cCUSplitFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SPLIT_FLAG );
118 m_cCUSkipFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SKIP_FLAG );
119 m_cCUMergeFlagExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_FLAG_EXT);
120 m_cCUMergeIdxExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_IDX_EXT);
121 m_cCUPartSizeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PART_SIZE );
122 m_cCUPredModeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PRED_MODE );
123 m_cCUIntraPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTRA_PRED_MODE );
124 m_cCUChromaPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_PRED_MODE );
125 m_cCUInterDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTER_DIR );
126 m_cCUMvdSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVD );
127 m_cCURefPicSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_REF_PIC );
128 m_cCUDeltaQpSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_DQP );
129 m_cCUQtCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_CBF );
130 m_cCUQtRootCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_ROOT_CBF );
131 m_cCUSigCoeffGroupSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_CG_FLAG );
132 m_cCUSigSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_FLAG );
133 m_cCuCtxLastX.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST );
134 m_cCuCtxLastY.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST );
135 m_cCUOneSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ONE_FLAG );
136 m_cCUAbsSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ABS_FLAG );
137 m_cMVPIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVP_IDX );
138 m_cCUTransSubdivFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANS_SUBDIV_FLAG );
139 m_cSaoMergeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_MERGE_FLAG );
140 m_cSaoTypeIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_TYPE_IDX );
141 m_cTransformSkipSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANSFORMSKIP_FLAG );
142 m_CUTransquantBypassFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG );
143 m_explicitRdpcmFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG);
144 m_explicitRdpcmDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_DIR);
145 m_cCrossComponentPredictionSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION );
146 m_ChromaQpAdjFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG );
147 m_ChromaQpAdjIdcSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_IDC );
148
149 for (UInt statisticIndex = 0; statisticIndex < RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS ; statisticIndex++)
150 {
151 m_golombRiceAdaptationStatistics[statisticIndex] = 0;
152 }
153
154 m_pcBinIf->start();
155
156 return;
157 }
158
159 /** The function does the following:
160 * If current slice type is P/B then it determines the distance of initialisation type 1 and 2 from the current CABAC states and
161 * stores the index of the closest table. This index is used for the next P/B slice when cabac_init_present_flag is true.
162 */
163 Void TEncSbac::determineCabacInitIdx()
164 {
165 Int qp = m_pcSlice->getSliceQp();
166
167 if (!m_pcSlice->isIntra())
168 {
169 SliceType aSliceTypeChoices[] = {B_SLICE, P_SLICE};
170
171 UInt bestCost = MAX_UINT;
172 SliceType bestSliceType = aSliceTypeChoices[0];
173 for (UInt idx=0; idx<2; idx++)
174 {
175 UInt curCost = 0;
176 SliceType curSliceType = aSliceTypeChoices[idx];
177
178 curCost = m_cCUSplitFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SPLIT_FLAG );
179 curCost += m_cCUSkipFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SKIP_FLAG );
180 curCost += m_cCUMergeFlagExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_FLAG_EXT);
181 curCost += m_cCUMergeIdxExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_IDX_EXT);
182 curCost += m_cCUPartSizeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PART_SIZE );
183 curCost += m_cCUPredModeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PRED_MODE );
184 curCost += m_cCUIntraPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTRA_PRED_MODE );
185 curCost += m_cCUChromaPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_PRED_MODE );
186 curCost += m_cCUInterDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTER_DIR );
187 curCost += m_cCUMvdSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVD );
188 curCost += m_cCURefPicSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_REF_PIC );
189 curCost += m_cCUDeltaQpSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_DQP );
190 curCost += m_cCUQtCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_CBF );
191 curCost += m_cCUQtRootCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_ROOT_CBF );
192 curCost += m_cCUSigCoeffGroupSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_CG_FLAG );
193 curCost += m_cCUSigSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_FLAG );
194 curCost += m_cCuCtxLastX.calcCost ( curSliceType, qp, (UChar*)INIT_LAST );
195 curCost += m_cCuCtxLastY.calcCost ( curSliceType, qp, (UChar*)INIT_LAST );
196 curCost += m_cCUOneSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ONE_FLAG );
197 curCost += m_cCUAbsSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ABS_FLAG );
198 curCost += m_cMVPIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVP_IDX );
199 curCost += m_cCUTransSubdivFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANS_SUBDIV_FLAG );
200 curCost += m_cSaoMergeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_MERGE_FLAG );
201 curCost += m_cSaoTypeIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_TYPE_IDX );
202 curCost += m_cTransformSkipSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANSFORMSKIP_FLAG );
203 curCost += m_CUTransquantBypassFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG );
204 curCost += m_explicitRdpcmFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG);
205 curCost += m_explicitRdpcmDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_DIR);
206 curCost += m_cCrossComponentPredictionSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION );
207 curCost += m_ChromaQpAdjFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG );
208 curCost += m_ChromaQpAdjIdcSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_IDC );
209
210 if (curCost < bestCost)
211 {
212 bestSliceType = curSliceType;
213 bestCost = curCost;
214 }
215 }
216 m_pcSlice->getPPS()->setEncCABACTableIdx( bestSliceType );
217 }
218 else
219 {
220 m_pcSlice->getPPS()->setEncCABACTableIdx( I_SLICE );
221 }
222 }
223
224 Void TEncSbac::codeVPS( TComVPS* pcVPS )
225 {
226 assert (0);
227 return;
228 }
229
230 Void TEncSbac::codeSPS( TComSPS* pcSPS )
231 {
232 assert (0);
233 return;
234 }
235
236 Void TEncSbac::codePPS( TComPPS* pcPPS )
237 {
238 assert (0);
239 return;
240 }
241
242 Void TEncSbac::codeSliceHeader( TComSlice* pcSlice )
243 {
244 assert (0);
245 return;
246 }
247
248 Void TEncSbac::codeTilesWPPEntryPoint( TComSlice* pSlice )
249 {
250 assert (0);
251 return;
252 }
253
254 Void TEncSbac::codeTerminatingBit( UInt uilsLast )
255 {
256 m_pcBinIf->encodeBinTrm( uilsLast );
257 }
258
259 Void TEncSbac::codeSliceFinish()
260 {
261 m_pcBinIf->finish();
262 }
263
264 Void TEncSbac::xWriteUnarySymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset )
265 {
266 m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[0] );
267
268 if( 0 == uiSymbol)
269 {
270 return;
271 }
272
273 while( uiSymbol-- )
274 {
275 m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ iOffset ] );
276 }
277
278 return;
279 }
280
281 Void TEncSbac::xWriteUnaryMaxSymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol )
282 {
283 if (uiMaxSymbol == 0)
284 {
285 return;
286 }
287
288 m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ 0 ] );
289
290 if ( uiSymbol == 0 )
291 {
292 return;
293 }
294
295 Bool bCodeLast = ( uiMaxSymbol > uiSymbol );
296
297 while( --uiSymbol )
298 {
299 m_pcBinIf->encodeBin( 1, pcSCModel[ iOffset ] );
300 }
301 if( bCodeLast )
302 {
303 m_pcBinIf->encodeBin( 0, pcSCModel[ iOffset ] );
304 }
305
306 return;
307 }
308
309 Void TEncSbac::xWriteEpExGolomb( UInt uiSymbol, UInt uiCount )
310 {
311 UInt bins = 0;
312 Int numBins = 0;
313
314 while( uiSymbol >= (UInt)(1<<uiCount) )
315 {
316 bins = 2 * bins + 1;
317 numBins++;
318 uiSymbol -= 1 << uiCount;
319 uiCount ++;
320 }
321 bins = 2 * bins + 0;
322 numBins++;
323
324 bins = (bins << uiCount) | uiSymbol;
325 numBins += uiCount;
326
327 assert( numBins <= 32 );
328 m_pcBinIf->encodeBinsEP( bins, numBins );
329 }
330
331
332 /** Coding of coeff_abs_level_minus3
333 * \param uiSymbol value of coeff_abs_level_minus3
334 * \param ruiGoRiceParam reference to Rice parameter
335 * \returns Void
336 */
337 Void TEncSbac::xWriteCoefRemainExGolomb ( UInt symbol, UInt &rParam, const Bool useLimitedPrefixLength, const ChannelType channelType )
338 {
339 Int codeNumber = (Int)symbol;
340 UInt length;
341
342 if (codeNumber < (COEF_REMAIN_BIN_REDUCTION << rParam))
343 {
344 length = codeNumber>>rParam;
345 m_pcBinIf->encodeBinsEP( (1<<(length+1))-2 , length+1);
346 m_pcBinIf->encodeBinsEP((codeNumber%(1<<rParam)),rParam);
347 }
348 else if (useLimitedPrefixLength)
349 {
350 const UInt maximumPrefixLength = (32 - (COEF_REMAIN_BIN_REDUCTION + g_maxTrDynamicRange[channelType]));
351
352 UInt prefixLength = 0;
353 UInt suffixLength = MAX_UINT;
354 UInt codeValue = (symbol >> rParam) - COEF_REMAIN_BIN_REDUCTION;
355
356 if (codeValue >= ((1 << maximumPrefixLength) - 1))
357 {
358 prefixLength = maximumPrefixLength;
359 suffixLength = g_maxTrDynamicRange[channelType] - rParam;
360 }
361 else
362 {
363 while (codeValue > ((2 << prefixLength) - 2))
364 {
365 prefixLength++;
366 }
367
368 suffixLength = prefixLength + 1; //+1 for the separator bit
369 }
370
371 const UInt suffix = codeValue - ((1 << prefixLength) - 1);
372
373 const UInt totalPrefixLength = prefixLength + COEF_REMAIN_BIN_REDUCTION;
374 const UInt prefix = (1 << totalPrefixLength) - 1;
375 const UInt rParamBitMask = (1 << rParam) - 1;
376
377 m_pcBinIf->encodeBinsEP( prefix, totalPrefixLength ); //prefix
378 m_pcBinIf->encodeBinsEP(((suffix << rParam) | (symbol & rParamBitMask)), (suffixLength + rParam)); //separator, suffix, and rParam bits
379 }
380 else
381 {
382 length = rParam;
383 codeNumber = codeNumber - ( COEF_REMAIN_BIN_REDUCTION << rParam);
384
385 while (codeNumber >= (1<<length))
386 {
387 codeNumber -= (1<<(length++));
388 }
389
390 m_pcBinIf->encodeBinsEP((1<<(COEF_REMAIN_BIN_REDUCTION+length+1-rParam))-2,COEF_REMAIN_BIN_REDUCTION+length+1-rParam);
391 m_pcBinIf->encodeBinsEP(codeNumber,length);
392 }
393 }
394
395 // SBAC RD
396 Void TEncSbac::load ( const TEncSbac* pSrc)
397 {
398 this->xCopyFrom(pSrc);
399 }
400
401 Void TEncSbac::loadIntraDirMode( const TEncSbac* pSrc, const ChannelType chType )
402 {
403 m_pcBinIf->copyState( pSrc->m_pcBinIf );
404 if (isLuma(chType))
405 this->m_cCUIntraPredSCModel .copyFrom( &pSrc->m_cCUIntraPredSCModel );
406 else
407 this->m_cCUChromaPredSCModel .copyFrom( &pSrc->m_cCUChromaPredSCModel );
408 }
409
410
411 Void TEncSbac::store( TEncSbac* pDest) const
412 {
413 pDest->xCopyFrom( this );
414 }
415
416
417 Void TEncSbac::xCopyFrom( const TEncSbac* pSrc )
418 {
419 m_pcBinIf->copyState( pSrc->m_pcBinIf );
420 xCopyContextsFrom(pSrc);
421 }
422
423 Void TEncSbac::codeMVPIdx ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
424 {
425 Int iSymbol = pcCU->getMVPIdx(eRefList, uiAbsPartIdx);
426 Int iNum = AMVP_MAX_NUM_CANDS;
427
428 xWriteUnaryMaxSymbol(iSymbol, m_cMVPIdxSCModel.get(0), 1, iNum-1);
429 }
430
431 Void TEncSbac::codePartSize( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
432 {
433 PartSize eSize = pcCU->getPartitionSize( uiAbsPartIdx );
434
435 if ( pcCU->isIntra( uiAbsPartIdx ) )
436 {
437 if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth )
438 {
439 m_pcBinIf->encodeBin( eSize == SIZE_2Nx2N? 1 : 0, m_cCUPartSizeSCModel.get( 0, 0, 0 ) );
440 }
441 return;
442 }
443
444 switch(eSize)
445 {
446 case SIZE_2Nx2N:
447 {
448 m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 0) );
449 break;
450 }
451 case SIZE_2NxN:
452 case SIZE_2NxnU:
453 case SIZE_2NxnD:
454 {
455 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
456 m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 1) );
457 if ( pcCU->getSlice()->getSPS()->getAMPAcc( uiDepth ) )
458 {
459 if (eSize == SIZE_2NxN)
460 {
461 m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
462 }
463 else
464 {
465 m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
466 m_pcBinIf->encodeBinEP((eSize == SIZE_2NxnU? 0: 1));
467 }
468 }
469 break;
470 }
471 case SIZE_Nx2N:
472 case SIZE_nLx2N:
473 case SIZE_nRx2N:
474 {
475 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
476 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) );
477
478 if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) )
479 {
480 m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 2) );
481 }
482
483 if ( pcCU->getSlice()->getSPS()->getAMPAcc( uiDepth ) )
484 {
485 if (eSize == SIZE_Nx2N)
486 {
487 m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
488 }
489 else
490 {
491 m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
492 m_pcBinIf->encodeBinEP((eSize == SIZE_nLx2N? 0: 1));
493 }
494 }
495 break;
496 }
497 case SIZE_NxN:
498 {
499 if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) )
500 {
501 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
502 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) );
503 m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 2) );
504 }
505 break;
506 }
507 default:
508 {
509 assert(0);
510 break;
511 }
512 }
513 }
514
515
516 /** code prediction mode
517 * \param pcCU
518 * \param uiAbsPartIdx
519 * \returns Void
520 */
521 Void TEncSbac::codePredMode( TComDataCU* pcCU, UInt uiAbsPartIdx )
522 {
523 // get context function is here
524 m_pcBinIf->encodeBin( pcCU->isIntra( uiAbsPartIdx ) ? 1 : 0, m_cCUPredModeSCModel.get( 0, 0, 0 ) );
525 }
526
527 Void TEncSbac::codeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
528 {
529 UInt uiSymbol = pcCU->getCUTransquantBypass(uiAbsPartIdx);
530 m_pcBinIf->encodeBin( uiSymbol, m_CUTransquantBypassFlagSCModel.get( 0, 0, 0 ) );
531 }
532
533 /** code skip flag
534 * \param pcCU
535 * \param uiAbsPartIdx
536 * \returns Void
537 */
538 Void TEncSbac::codeSkipFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
539 {
540 // get context function is here
541 UInt uiSymbol = pcCU->isSkipped( uiAbsPartIdx ) ? 1 : 0;
542 UInt uiCtxSkip = pcCU->getCtxSkipFlag( uiAbsPartIdx ) ;
543 m_pcBinIf->encodeBin( uiSymbol, m_cCUSkipFlagSCModel.get( 0, 0, uiCtxSkip ) );
544 DTRACE_CABAC_VL( g_nSymbolCounter++ );
545 DTRACE_CABAC_T( "\tSkipFlag" );
546 DTRACE_CABAC_T( "\tuiCtxSkip: ");
547 DTRACE_CABAC_V( uiCtxSkip );
548 DTRACE_CABAC_T( "\tuiSymbol: ");
549 DTRACE_CABAC_V( uiSymbol );
550 DTRACE_CABAC_T( "\n");
551 }
552
553 /** code merge flag
554 * \param pcCU
555 * \param uiAbsPartIdx
556 * \returns Void
557 */
558 Void TEncSbac::codeMergeFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
559 {
560 const UInt uiSymbol = pcCU->getMergeFlag( uiAbsPartIdx ) ? 1 : 0;
561 m_pcBinIf->encodeBin( uiSymbol, *m_cCUMergeFlagExtSCModel.get( 0 ) );
562
563 DTRACE_CABAC_VL( g_nSymbolCounter++ );
564 DTRACE_CABAC_T( "\tMergeFlag: " );
565 DTRACE_CABAC_V( uiSymbol );
566 DTRACE_CABAC_T( "\tAddress: " );
567 DTRACE_CABAC_V( pcCU->getCtuRsAddr() );
568 DTRACE_CABAC_T( "\tuiAbsPartIdx: " );
569 DTRACE_CABAC_V( uiAbsPartIdx );
570 DTRACE_CABAC_T( "\n" );
571 }
572
573 /** code merge index
574 * \param pcCU
575 * \param uiAbsPartIdx
576 * \returns Void
577 */
578 Void TEncSbac::codeMergeIndex( TComDataCU* pcCU, UInt uiAbsPartIdx )
579 {
580 UInt uiUnaryIdx = pcCU->getMergeIndex( uiAbsPartIdx );
581 UInt uiNumCand = pcCU->getSlice()->getMaxNumMergeCand();
582 if ( uiNumCand > 1 )
583 {
584 for( UInt ui = 0; ui < uiNumCand - 1; ++ui )
585 {
586 const UInt uiSymbol = ui == uiUnaryIdx ? 0 : 1;
587 if ( ui==0 )
588 {
589 m_pcBinIf->encodeBin( uiSymbol, m_cCUMergeIdxExtSCModel.get( 0, 0, 0 ) );
590 }
591 else
592 {
593 m_pcBinIf->encodeBinEP( uiSymbol );
594 }
595 if( uiSymbol == 0 )
596 {
597 break;
598 }
599 }
600 }
601 DTRACE_CABAC_VL( g_nSymbolCounter++ );
602 DTRACE_CABAC_T( "\tparseMergeIndex()" );
603 DTRACE_CABAC_T( "\tuiMRGIdx= " );
604 DTRACE_CABAC_V( pcCU->getMergeIndex( uiAbsPartIdx ) );
605 DTRACE_CABAC_T( "\n" );
606 }
607
608 Void TEncSbac::codeSplitFlag ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
609 {
610 if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth )
611 return;
612
613 UInt uiCtx = pcCU->getCtxSplitFlag( uiAbsPartIdx, uiDepth );
614 UInt uiCurrSplitFlag = ( pcCU->getDepth( uiAbsPartIdx ) > uiDepth ) ? 1 : 0;
615
616 assert( uiCtx < 3 );
617 m_pcBinIf->encodeBin( uiCurrSplitFlag, m_cCUSplitFlagSCModel.get( 0, 0, uiCtx ) );
618 DTRACE_CABAC_VL( g_nSymbolCounter++ )
619 DTRACE_CABAC_T( "\tSplitFlag\n" )
620 return;
621 }
622
623 Void TEncSbac::codeTransformSubdivFlag( UInt uiSymbol, UInt uiCtx )
624 {
625 m_pcBinIf->encodeBin( uiSymbol, m_cCUTransSubdivFlagSCModel.get( 0, 0, uiCtx ) );
626 DTRACE_CABAC_VL( g_nSymbolCounter++ )
627 DTRACE_CABAC_T( "\tparseTransformSubdivFlag()" )
628 DTRACE_CABAC_T( "\tsymbol=" )
629 DTRACE_CABAC_V( uiSymbol )
630 DTRACE_CABAC_T( "\tctx=" )
631 DTRACE_CABAC_V( uiCtx )
632 DTRACE_CABAC_T( "\n" )
633 }
634
635
636 Void TEncSbac::codeIntraDirLumaAng( TComDataCU* pcCU, UInt absPartIdx, Bool isMultiple)
637 {
638 UInt dir[4],j;
639 Int preds[4][NUM_MOST_PROBABLE_MODES] = {{-1, -1, -1},{-1, -1, -1},{-1, -1, -1},{-1, -1, -1}};
640 Int predNum[4], predIdx[4] ={ -1,-1,-1,-1};
641 PartSize mode = pcCU->getPartitionSize( absPartIdx );
642 UInt partNum = isMultiple?(mode==SIZE_NxN?4:1):1;
643 UInt partOffset = ( pcCU->getPic()->getNumPartitionsInCtu() >> ( pcCU->getDepth(absPartIdx) << 1 ) ) >> 2;
644 for (j=0;j<partNum;j++)
645 {
646 dir[j] = pcCU->getIntraDir( CHANNEL_TYPE_LUMA, absPartIdx+partOffset*j );
647 predNum[j] = pcCU->getIntraDirPredictor(absPartIdx+partOffset*j, preds[j], COMPONENT_Y);
648 for(UInt i = 0; i < predNum[j]; i++)
649 {
650 if(dir[j] == preds[j][i])
651 {
652 predIdx[j] = i;
653 }
654 }
655 m_pcBinIf->encodeBin((predIdx[j] != -1)? 1 : 0, m_cCUIntraPredSCModel.get( 0, 0, 0 ) );
656 }
657 for (j=0;j<partNum;j++)
658 {
659 if(predIdx[j] != -1)
660 {
661 m_pcBinIf->encodeBinEP( predIdx[j] ? 1 : 0 );
662 if (predIdx[j])
663 {
664 m_pcBinIf->encodeBinEP( predIdx[j]-1 );
665 }
666 }
667 else
668 {
669 assert(predNum[j]>=3); // It is currently always 3!
670 if (preds[j][0] > preds[j][1])
671 {
672 std::swap(preds[j][0], preds[j][1]);
673 }
674 if (preds[j][0] > preds[j][2])
675 {
676 std::swap(preds[j][0], preds[j][2]);
677 }
678 if (preds[j][1] > preds[j][2])
679 {
680 std::swap(preds[j][1], preds[j][2]);
681 }
682 for(Int i = (predNum[j] - 1); i >= 0; i--)
683 {
684 dir[j] = dir[j] > preds[j][i] ? dir[j] - 1 : dir[j];
685 }
686 m_pcBinIf->encodeBinsEP( dir[j], 5 );
687 }
688 }
689 return;
690 }
691
692 Void TEncSbac::codeIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx )
693 {
694 UInt uiIntraDirChroma = pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx );
695
696 if( uiIntraDirChroma == DM_CHROMA_IDX )
697 {
698 m_pcBinIf->encodeBin( 0, m_cCUChromaPredSCModel.get( 0, 0, 0 ) );
699 }
700 else
701 {
702 m_pcBinIf->encodeBin( 1, m_cCUChromaPredSCModel.get( 0, 0, 0 ) );
703
704 UInt uiAllowedChromaDir[ NUM_CHROMA_MODE ];
705 pcCU->getAllowedChromaDir( uiAbsPartIdx, uiAllowedChromaDir );
706
707 for( Int i = 0; i < NUM_CHROMA_MODE - 1; i++ )
708 {
709 if( uiIntraDirChroma == uiAllowedChromaDir[i] )
710 {
711 uiIntraDirChroma = i;
712 break;
713 }
714 }
715
716 m_pcBinIf->encodeBinsEP( uiIntraDirChroma, 2 );
717 }
718
719 return;
720 }
721
722
723 Void TEncSbac::codeInterDir( TComDataCU* pcCU, UInt uiAbsPartIdx )
724 {
725 const UInt uiInterDir = pcCU->getInterDir( uiAbsPartIdx ) - 1;
726 const UInt uiCtx = pcCU->getCtxInterDir( uiAbsPartIdx );
727 ContextModel *pCtx = m_cCUInterDirSCModel.get( 0 );
728
729 if (pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N || pcCU->getHeight(uiAbsPartIdx) != 8 )
730 {
731 m_pcBinIf->encodeBin( uiInterDir == 2 ? 1 : 0, *( pCtx + uiCtx ) );
732 }
733
734 if (uiInterDir < 2)
735 {
736 m_pcBinIf->encodeBin( uiInterDir, *( pCtx + 4 ) );
737 }
738
739 return;
740 }
741
742 Void TEncSbac::codeRefFrmIdx( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
743 {
744 Int iRefFrame = pcCU->getCUMvField( eRefList )->getRefIdx( uiAbsPartIdx );
745 ContextModel *pCtx = m_cCURefPicSCModel.get( 0 );
746 m_pcBinIf->encodeBin( ( iRefFrame == 0 ? 0 : 1 ), *pCtx );
747
748 if( iRefFrame > 0 )
749 {
750 UInt uiRefNum = pcCU->getSlice()->getNumRefIdx( eRefList ) - 2;
751 pCtx++;
752 iRefFrame--;
753 for( UInt ui = 0; ui < uiRefNum; ++ui )
754 {
755 const UInt uiSymbol = ui == iRefFrame ? 0 : 1;
756 if( ui == 0 )
757 {
758 m_pcBinIf->encodeBin( uiSymbol, *pCtx );
759 }
760 else
761 {
762 m_pcBinIf->encodeBinEP( uiSymbol );
763 }
764 if( uiSymbol == 0 )
765 {
766 break;
767 }
768 }
769 }
770 return;
771 }
772
773 Void TEncSbac::codeMvd( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
774 {
775 if(pcCU->getSlice()->getMvdL1ZeroFlag() && eRefList == REF_PIC_LIST_1 && pcCU->getInterDir(uiAbsPartIdx)==3)
776 {
777 return;
778 }
779
780 const TComCUMvField* pcCUMvField = pcCU->getCUMvField( eRefList );
781 const Int iHor = pcCUMvField->getMvd( uiAbsPartIdx ).getHor();
782 const Int iVer = pcCUMvField->getMvd( uiAbsPartIdx ).getVer();
783 ContextModel* pCtx = m_cCUMvdSCModel.get( 0 );
784
785 m_pcBinIf->encodeBin( iHor != 0 ? 1 : 0, *pCtx );
786 m_pcBinIf->encodeBin( iVer != 0 ? 1 : 0, *pCtx );
787
788 const Bool bHorAbsGr0 = iHor != 0;
789 const Bool bVerAbsGr0 = iVer != 0;
790 const UInt uiHorAbs = 0 > iHor ? -iHor : iHor;
791 const UInt uiVerAbs = 0 > iVer ? -iVer : iVer;
792 pCtx++;
793
794 if( bHorAbsGr0 )
795 {
796 m_pcBinIf->encodeBin( uiHorAbs > 1 ? 1 : 0, *pCtx );
797 }
798
799 if( bVerAbsGr0 )
800 {
801 m_pcBinIf->encodeBin( uiVerAbs > 1 ? 1 : 0, *pCtx );
802 }
803
804 if( bHorAbsGr0 )
805 {
806 if( uiHorAbs > 1 )
807 {
808 xWriteEpExGolomb( uiHorAbs-2, 1 );
809 }
810
811 m_pcBinIf->encodeBinEP( 0 > iHor ? 1 : 0 );
812 }
813
814 if( bVerAbsGr0 )
815 {
816 if( uiVerAbs > 1 )
817 {
818 xWriteEpExGolomb( uiVerAbs-2, 1 );
819 }
820
821 m_pcBinIf->encodeBinEP( 0 > iVer ? 1 : 0 );
822 }
823
824 return;
825 }
826
827 Void TEncSbac::codeCrossComponentPrediction( TComTU &rTu, ComponentID compID )
828 {
829 TComDataCU *pcCU = rTu.getCU();
830
831 if( isLuma(compID) || !pcCU->getSlice()->getPPS()->getUseCrossComponentPrediction() ) return;
832
833 const UInt uiAbsPartIdx = rTu.GetAbsPartIdxTU();
834
835 if (!pcCU->isIntra(uiAbsPartIdx) || (pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx ) == DM_CHROMA_IDX))
836 {
837 DTRACE_CABAC_VL( g_nSymbolCounter++ )
838 DTRACE_CABAC_T("\tparseCrossComponentPrediction()")
839 DTRACE_CABAC_T( "\tAddr=" )
840 DTRACE_CABAC_V( compID )
841 DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
842 DTRACE_CABAC_V( uiAbsPartIdx )
843
844 Int alpha = pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID );
845 ContextModel *pCtx = m_cCrossComponentPredictionSCModel.get(0, 0) + ((compID == COMPONENT_Cr) ? (NUM_CROSS_COMPONENT_PREDICTION_CTX >> 1) : 0);
846 m_pcBinIf->encodeBin(((alpha != 0) ? 1 : 0), pCtx[0]);
847
848 if (alpha != 0)
849 {
850 static const Int log2AbsAlphaMinus1Table[8] = { 0, 1, 1, 2, 2, 2, 3, 3 };
851 assert(abs(alpha) <= 8);
852
853 if (abs(alpha)>1)
854 {
855 m_pcBinIf->encodeBin(1, pCtx[1]);
856 xWriteUnaryMaxSymbol( log2AbsAlphaMinus1Table[abs(alpha) - 1] - 1, (pCtx + 2), 1, 2 );
857 }
858 else
859 {
860 m_pcBinIf->encodeBin(0, pCtx[1]);
861 }
862 m_pcBinIf->encodeBin( ((alpha < 0) ? 1 : 0), pCtx[4] );
863 }
864 DTRACE_CABAC_T( "\tAlpha=" )
865 DTRACE_CABAC_V( pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID ) )
866 DTRACE_CABAC_T( "\n" )
867 }
868 }
869
870 Void TEncSbac::codeDeltaQP( TComDataCU* pcCU, UInt uiAbsPartIdx )
871 {
872 Int iDQp = pcCU->getQP( uiAbsPartIdx ) - pcCU->getRefQP( uiAbsPartIdx );
873
874 Int qpBdOffsetY = pcCU->getSlice()->getSPS()->getQpBDOffset(CHANNEL_TYPE_LUMA);
875 iDQp = (iDQp + 78 + qpBdOffsetY + (qpBdOffsetY/2)) % (52 + qpBdOffsetY) - 26 - (qpBdOffsetY/2);
876
877 UInt uiAbsDQp = (UInt)((iDQp > 0)? iDQp : (-iDQp));
878 UInt TUValue = min((Int)uiAbsDQp, CU_DQP_TU_CMAX);
879 xWriteUnaryMaxSymbol( TUValue, &m_cCUDeltaQpSCModel.get( 0, 0, 0 ), 1, CU_DQP_TU_CMAX);
880 if( uiAbsDQp >= CU_DQP_TU_CMAX )
881 {
882 xWriteEpExGolomb( uiAbsDQp - CU_DQP_TU_CMAX, CU_DQP_EG_k );
883 }
884
885 if ( uiAbsDQp > 0)
886 {
887 UInt uiSign = (iDQp > 0 ? 0 : 1);
888 m_pcBinIf->encodeBinEP(uiSign);
889 }
890
891 return;
892 }
893
894 /** code chroma qp adjustment, converting from the internal table representation
895 * \returns Void
896 */
897 Void TEncSbac::codeChromaQpAdjustment( TComDataCU* cu, UInt absPartIdx )
898 {
899 Int internalIdc = cu->getChromaQpAdj( absPartIdx );
900 Int tableSize = cu->getSlice()->getPPS()->getChromaQpAdjTableSize();
901 /* internal_idc == 0 => flag = 0
902 * internal_idc > 1 => code idc value (if table size warrents) */
903 m_pcBinIf->encodeBin( internalIdc > 0, m_ChromaQpAdjFlagSCModel.get( 0, 0, 0 ) );
904
905 if (internalIdc > 0 && tableSize > 1)
906 {
907 xWriteUnaryMaxSymbol( internalIdc - 1, &m_ChromaQpAdjIdcSCModel.get( 0, 0, 0 ), 0, tableSize - 1 );
908 }
909 }
910
911 Void TEncSbac::codeQtCbf( TComTU &rTu, const ComponentID compID, const Bool lowestLevel )
912 {
913 TComDataCU* pcCU = rTu.getCU();
914
915 const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID);
916 const UInt TUDepth = rTu.GetTransformDepthRel();
917 UInt uiCtx = pcCU->getCtxQtCbf( rTu, toChannelType(compID) );
918 const UInt contextSet = toChannelType(compID);
919
920 const UInt width = rTu.getRect(compID).width;
921 const UInt height = rTu.getRect(compID).height;
922 const Bool canQuadSplit = (width >= (MIN_TU_SIZE * 2)) && (height >= (MIN_TU_SIZE * 2));
923
924 // Since the CBF for chroma is coded at the highest level possible, if sub-TUs are
925 // to be coded for a 4x8 chroma TU, their CBFs must be coded at the highest 4x8 level
926 // (i.e. where luma TUs are 8x8 rather than 4x4)
927 // ___ ___
928 // | | | <- 4 x (8x8 luma + 4x8 4:2:2 chroma)
929 // |___|___| each quadrant has its own chroma CBF
930 // | | | _ _ _ _
931 // |___|___| |
932 // <--16---> V
933 // _ _
934 // |_|_| <- 4 x 4x4 luma + 1 x 4x8 4:2:2 chroma
935 // |_|_| no chroma CBF is coded - instead the parent CBF is inherited
936 // <-8-> if sub-TUs are present, their CBFs had to be coded at the parent level
937
938 const UInt lowestTUDepth = TUDepth + ((!lowestLevel && !canQuadSplit) ? 1 : 0); //unsplittable TUs inherit their parent's CBF
939
940 if ((width != height) && (lowestLevel || !canQuadSplit)) //if sub-TUs are present
941 {
942 const UInt subTUDepth = lowestTUDepth + 1; //if this is the lowest level of the TU-tree, the sub-TUs are directly below. Otherwise, this must be the level above the lowest level (as specified above)
943 const UInt partIdxesPerSubTU = rTu.GetAbsPartIdxNumParts(compID) >> 1;
944
945 for (UInt subTU = 0; subTU < 2; subTU++)
946 {
947 const UInt subTUAbsPartIdx = absPartIdx + (subTU * partIdxesPerSubTU);
948 const UInt uiCbf = pcCU->getCbf(subTUAbsPartIdx, compID, subTUDepth);
949
950 m_pcBinIf->encodeBin(uiCbf, m_cCUQtCbfSCModel.get(0, contextSet, uiCtx));
951
952 DTRACE_CABAC_VL( g_nSymbolCounter++ )
953 DTRACE_CABAC_T( "\tparseQtCbf()" )
954 DTRACE_CABAC_T( "\tsub-TU=" )
955 DTRACE_CABAC_V( subTU )
956 DTRACE_CABAC_T( "\tsymbol=" )
957 DTRACE_CABAC_V( uiCbf )
958 DTRACE_CABAC_T( "\tctx=" )
959 DTRACE_CABAC_V( uiCtx )
960 DTRACE_CABAC_T( "\tetype=" )
961 DTRACE_CABAC_V( compID )
962 DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
963 DTRACE_CABAC_V( subTUAbsPartIdx )
964 DTRACE_CABAC_T( "\n" )
965 }
966 }
967 else
968 {
969 const UInt uiCbf = pcCU->getCbf( absPartIdx, compID, lowestTUDepth );
970 m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, contextSet, uiCtx ) );
971
972
973 DTRACE_CABAC_VL( g_nSymbolCounter++ )
974 DTRACE_CABAC_T( "\tparseQtCbf()" )
975 DTRACE_CABAC_T( "\tsymbol=" )
976 DTRACE_CABAC_V( uiCbf )
977 DTRACE_CABAC_T( "\tctx=" )
978 DTRACE_CABAC_V( uiCtx )
979 DTRACE_CABAC_T( "\tetype=" )
980 DTRACE_CABAC_V( compID )
981 DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
982 DTRACE_CABAC_V( rTu.GetAbsPartIdxTU(compID) )
983 DTRACE_CABAC_T( "\n" )
984 }
985 }
986
987
988 Void TEncSbac::codeTransformSkipFlags (TComTU &rTu, ComponentID component )
989 {
990 TComDataCU* pcCU=rTu.getCU();
991 const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU();
992
993 if (pcCU->getCUTransquantBypass(uiAbsPartIdx))
994 {
995 return;
996 }
997
998 if (!TUCompRectHasAssociatedTransformSkipFlag(rTu.getRect(component), pcCU->getSlice()->getPPS()->getTransformSkipLog2MaxSize()))
999 {
1000 return;
1001 }
1002
1003 UInt useTransformSkip = pcCU->getTransformSkip( uiAbsPartIdx,component);
1004 m_pcBinIf->encodeBin( useTransformSkip, m_cTransformSkipSCModel.get( 0, toChannelType(component), 0 ) );
1005
1006 DTRACE_CABAC_VL( g_nSymbolCounter++ )
1007 DTRACE_CABAC_T("\tparseTransformSkip()");
1008 DTRACE_CABAC_T( "\tsymbol=" )
1009 DTRACE_CABAC_V( useTransformSkip )
1010 DTRACE_CABAC_T( "\tAddr=" )
1011 DTRACE_CABAC_V( pcCU->getCtuRsAddr() )
1012 DTRACE_CABAC_T( "\tetype=" )
1013 DTRACE_CABAC_V( component )
1014 DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
1015 DTRACE_CABAC_V( rTu.GetAbsPartIdxTU() )
1016 DTRACE_CABAC_T( "\n" )
1017 }
1018
1019
1020 /** Code I_PCM information.
1021 * \param pcCU pointer to CU
1022 * \param uiAbsPartIdx CU index
1023 * \returns Void
1024 */
1025 Void TEncSbac::codeIPCMInfo( TComDataCU* pcCU, UInt uiAbsPartIdx )
1026 {
1027 UInt uiIPCM = (pcCU->getIPCMFlag(uiAbsPartIdx) == true)? 1 : 0;
1028
1029 Bool writePCMSampleFlag = pcCU->getIPCMFlag(uiAbsPartIdx);
1030
1031 m_pcBinIf->encodeBinTrm (uiIPCM);
1032
1033 if (writePCMSampleFlag)
1034 {
1035 m_pcBinIf->encodePCMAlignBits();
1036
1037 const UInt minCoeffSizeY = pcCU->getPic()->getMinCUWidth() * pcCU->getPic()->getMinCUHeight();
1038 const UInt offsetY = minCoeffSizeY * uiAbsPartIdx;
1039 for (UInt ch=0; ch < pcCU->getPic()->getNumberValidComponents(); ch++)
1040 {
1041 const ComponentID compID = ComponentID(ch);
1042 const UInt offset = offsetY >> (pcCU->getPic()->getComponentScaleX(compID) + pcCU->getPic()->getComponentScaleY(compID));
1043 Pel * pPCMSample = pcCU->getPCMSample(compID) + offset;
1044 const UInt width = pcCU->getWidth (uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleX(compID);
1045 const UInt height = pcCU->getHeight(uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleY(compID);
1046 const UInt sampleBits = pcCU->getSlice()->getSPS()->getPCMBitDepth(toChannelType(compID));
1047 for (UInt y=0; y<height; y++)
1048 {
1049 for (UInt x=0; x<width; x++)
1050 {
1051 UInt sample = pPCMSample[x];
1052 m_pcBinIf->xWritePCMCode(sample, sampleBits);
1053 }
1054 pPCMSample += width;
1055 }
1056 }
1057
1058 m_pcBinIf->resetBac();
1059 }
1060 }
1061
1062 Void TEncSbac::codeQtRootCbf( TComDataCU* pcCU, UInt uiAbsPartIdx )
1063 {
1064 UInt uiCbf = pcCU->getQtRootCbf( uiAbsPartIdx );
1065 UInt uiCtx = 0;
1066 m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) );
1067 DTRACE_CABAC_VL( g_nSymbolCounter++ )
1068 DTRACE_CABAC_T( "\tparseQtRootCbf()" )
1069 DTRACE_CABAC_T( "\tsymbol=" )
1070 DTRACE_CABAC_V( uiCbf )
1071 DTRACE_CABAC_T( "\tctx=" )
1072 DTRACE_CABAC_V( uiCtx )
1073 DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
1074 DTRACE_CABAC_V( uiAbsPartIdx )
1075 DTRACE_CABAC_T( "\n" )
1076 }
1077
1078 Void TEncSbac::codeQtCbfZero( TComTU & rTu, const ChannelType chType )
1079 {
1080 // this function is only used to estimate the bits when cbf is 0
1081 // and will never be called when writing the bistream. do not need to write log
1082 UInt uiCbf = 0;
1083 UInt uiCtx = rTu.getCU()->getCtxQtCbf( rTu, chType );
1084
1085 m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, chType, uiCtx ) );
1086 }
1087
1088 Void TEncSbac::codeQtRootCbfZero( TComDataCU* pcCU )
1089 {
1090 // this function is only used to estimate the bits when cbf is 0
1091 // and will never be called when writing the bistream. do not need to write log
1092 UInt uiCbf = 0;
1093 UInt uiCtx = 0;
1094 m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) );
1095 }
1096
1097 /** Encode (X,Y) position of the last significant coefficient
1098 * \param uiPosX X component of last coefficient
1099 * \param uiPosY Y component of last coefficient
1100 * \param width Block width
1101 * \param height Block height
1102 * \param eTType plane type / luminance or chrominance
1103 * \param uiScanIdx scan type (zig-zag, hor, ver)
1104 * This method encodes the X and Y component within a block of the last significant coefficient.
1105 */
1106 Void TEncSbac::codeLastSignificantXY( UInt uiPosX, UInt uiPosY, Int width, Int height, ComponentID component, UInt uiScanIdx )
1107 {
1108 // swap
1109 if( uiScanIdx == SCAN_VER )
1110 {
1111 swap( uiPosX, uiPosY );
1112 swap( width, height );
1113 }
1114
1115 UInt uiCtxLast;
1116 UInt uiGroupIdxX = g_uiGroupIdx[ uiPosX ];
1117 UInt uiGroupIdxY = g_uiGroupIdx[ uiPosY ];
1118
1119 ContextModel *pCtxX = m_cCuCtxLastX.get( 0, toChannelType(component) );
1120 ContextModel *pCtxY = m_cCuCtxLastY.get( 0, toChannelType(component) );
1121
1122 Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY;
1123 getLastSignificantContextParameters(component, width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY);
1124
1125 //------------------
1126
1127 // posX
1128
1129 for( uiCtxLast = 0; uiCtxLast < uiGroupIdxX; uiCtxLast++ )
1130 {
1131 m_pcBinIf->encodeBin( 1, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) );
1132 }
1133 if( uiGroupIdxX < g_uiGroupIdx[ width - 1 ])
1134 {
1135 m_pcBinIf->encodeBin( 0, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) );
1136 }
1137
1138 // posY
1139
1140 for( uiCtxLast = 0; uiCtxLast < uiGroupIdxY; uiCtxLast++ )
1141 {
1142 m_pcBinIf->encodeBin( 1, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) );
1143 }
1144 if( uiGroupIdxY < g_uiGroupIdx[ height - 1 ])
1145 {
1146 m_pcBinIf->encodeBin( 0, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) );
1147 }
1148
1149 // EP-coded part
1150
1151 if ( uiGroupIdxX > 3 )
1152 {
1153 UInt uiCount = ( uiGroupIdxX - 2 ) >> 1;
1154 uiPosX = uiPosX - g_uiMinInGroup[ uiGroupIdxX ];
1155 for (Int i = uiCount - 1 ; i >= 0; i-- )
1156 {
1157 m_pcBinIf->encodeBinEP( ( uiPosX >> i ) & 1 );
1158 }
1159 }
1160 if ( uiGroupIdxY > 3 )
1161 {
1162 UInt uiCount = ( uiGroupIdxY - 2 ) >> 1;
1163 uiPosY = uiPosY - g_uiMinInGroup[ uiGroupIdxY ];
1164 for ( Int i = uiCount - 1 ; i >= 0; i-- )
1165 {
1166 m_pcBinIf->encodeBinEP( ( uiPosY >> i ) & 1 );
1167 }
1168 }
1169 }
1170
1171
1172 Void TEncSbac::codeCoeffNxN( TComTU &rTu, TCoeff* pcCoef, const ComponentID compID )
1173 {
1174 TComDataCU* pcCU=rTu.getCU();
1175 const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU(compID);
1176 const TComRectangle &tuRect=rTu.getRect(compID);
1177 const UInt uiWidth=tuRect.width;
1178 const UInt uiHeight=tuRect.height;
1179
1180 DTRACE_CABAC_VL( g_nSymbolCounter++ )
1181 DTRACE_CABAC_T( "\tparseCoeffNxN()\teType=" )
1182 DTRACE_CABAC_V( compID )
1183 DTRACE_CABAC_T( "\twidth=" )
1184 DTRACE_CABAC_V( uiWidth )
1185 DTRACE_CABAC_T( "\theight=" )
1186 DTRACE_CABAC_V( uiHeight )
1187 DTRACE_CABAC_T( "\tdepth=" )
1188 // DTRACE_CABAC_V( rTu.GetTransformDepthTotalAdj(compID) )
1189 DTRACE_CABAC_V( rTu.GetTransformDepthTotal() )
1190 DTRACE_CABAC_T( "\tabspartidx=" )
1191 DTRACE_CABAC_V( uiAbsPartIdx )
1192 DTRACE_CABAC_T( "\ttoCU-X=" )
1193 DTRACE_CABAC_V( pcCU->getCUPelX() )
1194 DTRACE_CABAC_T( "\ttoCU-Y=" )
1195 DTRACE_CABAC_V( pcCU->getCUPelY() )
1196 DTRACE_CABAC_T( "\tCU-addr=" )
1197 DTRACE_CABAC_V( pcCU->getCtuRsAddr() )
1198 DTRACE_CABAC_T( "\tinCU-X=" )
1199 // DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[uiAbsPartIdx] ] )
1200 DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] )
1201 DTRACE_CABAC_T( "\tinCU-Y=" )
1202 // DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[uiAbsPartIdx] ] )
1203 DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] )
1204 DTRACE_CABAC_T( "\tpredmode=" )
1205 DTRACE_CABAC_V( pcCU->getPredictionMode( uiAbsPartIdx ) )
1206 DTRACE_CABAC_T( "\n" )
1207
1208 //--------------------------------------------------------------------------------------------------
1209
1210 if( uiWidth > m_pcSlice->getSPS()->getMaxTrSize() )
1211 {
1212 std::cerr << "ERROR: codeCoeffNxN was passed a TU with dimensions larger than the maximum allowed size" << std::endl;
1213 assert(false);
1214 exit(1);
1215 }
1216
1217 // compute number of significant coefficients
1218 UInt uiNumSig = TEncEntropy::countNonZeroCoeffs(pcCoef, uiWidth * uiHeight);
1219
1220 if ( uiNumSig == 0 )
1221 {
1222 std::cerr << "ERROR: codeCoeffNxN called for empty TU!" << std::endl;
1223 assert(false);
1224 exit(1);
1225 }
1226
1227 //--------------------------------------------------------------------------------------------------
1228
1229 //set parameters
1230
1231 const ChannelType chType = toChannelType(compID);
1232 const UInt uiLog2BlockWidth = g_aucConvertToBit[ uiWidth ] + 2;
1233 const UInt uiLog2BlockHeight = g_aucConvertToBit[ uiHeight ] + 2;
1234
1235 const ChannelType channelType = toChannelType(compID);
1236 const Bool extendedPrecision = pcCU->getSlice()->getSPS()->getUseExtendedPrecision();
1237
1238 const Bool alignCABACBeforeBypass = pcCU->getSlice()->getSPS()->getAlignCABACBeforeBypass();
1239
1240 Bool beValid;
1241
1242 {
1243 Int uiIntraMode = -1;
1244 const Bool bIsLuma = isLuma(compID);
1245 Int isIntra = pcCU->isIntra(uiAbsPartIdx) ? 1 : 0;
1246 if ( isIntra )
1247 {
1248 uiIntraMode = pcCU->getIntraDir( toChannelType(compID), uiAbsPartIdx );
1249
1250 uiIntraMode = (uiIntraMode==DM_CHROMA_IDX && !bIsLuma) ? pcCU->getIntraDir(CHANNEL_TYPE_LUMA, getChromasCorrespondingPULumaIdx(uiAbsPartIdx, rTu.GetChromaFormat())) : uiIntraMode;
1251 uiIntraMode = ((rTu.GetChromaFormat() == CHROMA_422) && !bIsLuma) ? g_chroma422IntraAngleMappingTable[uiIntraMode] : uiIntraMode;
1252 }
1253
1254 Int transformSkip = pcCU->getTransformSkip( uiAbsPartIdx,compID) ? 1 : 0;
1255 Bool rdpcm_lossy = ( transformSkip && isIntra && ( (uiIntraMode == HOR_IDX) || (uiIntraMode == VER_IDX) ) ) && pcCU->isRDPCMEnabled(uiAbsPartIdx);
1256
1257 if ( (pcCU->getCUTransquantBypass(uiAbsPartIdx)) || rdpcm_lossy )
1258 {
1259 beValid = false;
1260 if ( (!pcCU->isIntra(uiAbsPartIdx)) && pcCU->isRDPCMEnabled(uiAbsPartIdx))
1261 codeExplicitRdpcmMode( rTu, compID);
1262 }
1263 else
1264 {
1265 beValid = pcCU->getSlice()->getPPS()->getSignHideFlag() > 0;
1266 }
1267 }
1268
1269 //--------------------------------------------------------------------------------------------------
1270
1271 if(pcCU->getSlice()->getPPS()->getUseTransformSkip())
1272 {
1273 codeTransformSkipFlags(rTu, compID);
1274 if(pcCU->getTransformSkip(uiAbsPartIdx, compID) && !pcCU->isIntra(uiAbsPartIdx) && pcCU->isRDPCMEnabled(uiAbsPartIdx))
1275 {
1276 // This TU has coefficients and is transform skipped. Check whether is inter coded and if yes encode the explicit RDPCM mode
1277 codeExplicitRdpcmMode( rTu, compID);
1278
1279 if(pcCU->getExplicitRdpcmMode(compID, uiAbsPartIdx) != RDPCM_OFF)
1280 {
1281 // Sign data hiding is avoided for horizontal and vertical explicit RDPCM modes
1282 beValid = false;
1283 }
1284 }
1285 }
1286
1287 //--------------------------------------------------------------------------------------------------
1288
1289 const Bool bUseGolombRiceParameterAdaptation = pcCU->getSlice()->getSPS()->getUseGolombRiceParameterAdaptation();
1290 UInt &currentGolombRiceStatistic = m_golombRiceAdaptationStatistics[rTu.getGolombRiceStatisticsIndex(compID)];
1291
1292 //select scans
1293 TUEntropyCodingParameters codingParameters;
1294 getTUEntropyCodingParameters(codingParameters, rTu, compID);
1295
1296 //----- encode significance map -----
1297
1298 // Find position of last coefficient
1299 Int scanPosLast = -1;
1300 Int posLast;
1301
1302
1303 UInt uiSigCoeffGroupFlag[ MLS_GRP_NUM ];
1304
1305 memset( uiSigCoeffGroupFlag, 0, sizeof(UInt) * MLS_GRP_NUM );
1306 do
1307 {
1308 posLast = codingParameters.scan[ ++scanPosLast ];
1309
1310 if( pcCoef[ posLast ] != 0 )
1311 {
1312 // get L1 sig map
1313 UInt uiPosY = posLast >> uiLog2BlockWidth;
1314 UInt uiPosX = posLast - ( uiPosY << uiLog2BlockWidth );
1315
1316 UInt uiBlkIdx = (codingParameters.widthInGroups * (uiPosY >> MLS_CG_LOG2_HEIGHT)) + (uiPosX >> MLS_CG_LOG2_WIDTH);
1317 uiSigCoeffGroupFlag[ uiBlkIdx ] = 1;
1318
1319 uiNumSig--;
1320 }
1321 }
1322 while ( uiNumSig > 0 );
1323
1324 // Code position of last coefficient
1325 Int posLastY = posLast >> uiLog2BlockWidth;
1326 Int posLastX = posLast - ( posLastY << uiLog2BlockWidth );
1327 codeLastSignificantXY(posLastX, posLastY, uiWidth, uiHeight, compID, codingParameters.scanType);
1328
1329 //===== code significance flag =====
1330 ContextModel * const baseCoeffGroupCtx = m_cCUSigCoeffGroupSCModel.get( 0, chType );
1331 ContextModel * const baseCtx = m_cCUSigSCModel.get( 0, 0 ) + getSignificanceMapContextOffset(compID);
1332
1333 const Int iLastScanSet = scanPosLast >> MLS_CG_SIZE;
1334
1335 UInt c1 = 1;
1336 UInt uiGoRiceParam = 0;
1337 Int iScanPosSig = scanPosLast;
1338
1339 for( Int iSubSet = iLastScanSet; iSubSet >= 0; iSubSet-- )
1340 {
1341 Int numNonZero = 0;
1342 Int iSubPos = iSubSet << MLS_CG_SIZE;
1343 uiGoRiceParam = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR;
1344 Bool updateGolombRiceStatistics = bUseGolombRiceParameterAdaptation; //leave the statistics at 0 when not using the adaptation system
1345 UInt coeffSigns = 0;
1346
1347 Int absCoeff[1 << MLS_CG_SIZE];
1348
1349 Int lastNZPosInCG = -1;
1350 Int firstNZPosInCG = 1 << MLS_CG_SIZE;
1351
1352 Bool escapeDataPresentInGroup = false;
1353
1354 if( iScanPosSig == scanPosLast )
1355 {
1356 absCoeff[ 0 ] = Int(abs( pcCoef[ posLast ] ));
1357 coeffSigns = ( pcCoef[ posLast ] < 0 );
1358 numNonZero = 1;
1359 lastNZPosInCG = iScanPosSig;
1360 firstNZPosInCG = iScanPosSig;
1361 iScanPosSig--;
1362 }
1363
1364 // encode significant_coeffgroup_flag
1365 Int iCGBlkPos = codingParameters.scanCG[ iSubSet ];
1366 Int iCGPosY = iCGBlkPos / codingParameters.widthInGroups;
1367 Int iCGPosX = iCGBlkPos - (iCGPosY * codingParameters.widthInGroups);
1368
1369 if( iSubSet == iLastScanSet || iSubSet == 0)
1370 {
1371 uiSigCoeffGroupFlag[ iCGBlkPos ] = 1;
1372 }
1373 else
1374 {
1375 UInt uiSigCoeffGroup = (uiSigCoeffGroupFlag[ iCGBlkPos ] != 0);
1376 UInt uiCtxSig = TComTrQuant::getSigCoeffGroupCtxInc( uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups );
1377 m_pcBinIf->encodeBin( uiSigCoeffGroup, baseCoeffGroupCtx[ uiCtxSig ] );
1378 }
1379
1380 // encode significant_coeff_flag
1381 if( uiSigCoeffGroupFlag[ iCGBlkPos ] )
1382 {
1383 const Int patternSigCtx = TComTrQuant::calcPatternSigCtx(uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups);
1384
1385 UInt uiBlkPos, uiSig, uiCtxSig;
1386 for( ; iScanPosSig >= iSubPos; iScanPosSig-- )
1387 {
1388 uiBlkPos = codingParameters.scan[ iScanPosSig ];
1389 uiSig = (pcCoef[ uiBlkPos ] != 0);
1390 if( iScanPosSig > iSubPos || iSubSet == 0 || numNonZero )
1391 {
1392 uiCtxSig = TComTrQuant::getSigCtxInc( patternSigCtx, codingParameters, iScanPosSig, uiLog2BlockWidth, uiLog2BlockHeight, chType );
1393 m_pcBinIf->encodeBin( uiSig, baseCtx[ uiCtxSig ] );
1394 }
1395 if( uiSig )
1396 {
1397 absCoeff[ numNonZero ] = Int(abs( pcCoef[ uiBlkPos ] ));
1398 coeffSigns = 2 * coeffSigns + ( pcCoef[ uiBlkPos ] < 0 );
1399 numNonZero++;
1400 if( lastNZPosInCG == -1 )
1401 {
1402 lastNZPosInCG = iScanPosSig;
1403 }
1404 firstNZPosInCG = iScanPosSig;
1405 }
1406 }
1407 }
1408 else
1409 {
1410 iScanPosSig = iSubPos - 1;
1411 }
1412
1413 if( numNonZero > 0 )
1414 {
1415 Bool signHidden = ( lastNZPosInCG - firstNZPosInCG >= SBH_THRESHOLD );
1416
1417 const UInt uiCtxSet = getContextSetIndex(compID, iSubSet, (c1 == 0));
1418 c1 = 1;
1419
1420 ContextModel *baseCtxMod = m_cCUOneSCModel.get( 0, 0 ) + (NUM_ONE_FLAG_CTX_PER_SET * uiCtxSet);
1421
1422 Int numC1Flag = min(numNonZero, C1FLAG_NUMBER);
1423 Int firstC2FlagIdx = -1;
1424 for( Int idx = 0; idx < numC1Flag; idx++ )
1425 {
1426 UInt uiSymbol = absCoeff[ idx ] > 1;
1427 m_pcBinIf->encodeBin( uiSymbol, baseCtxMod[c1] );
1428 if( uiSymbol )
1429 {
1430 c1 = 0;
1431
1432 if (firstC2FlagIdx == -1)
1433 {
1434 firstC2FlagIdx = idx;
1435 }
1436 else //if a greater-than-one has been encountered already this group
1437 {
1438 escapeDataPresentInGroup = true;
1439 }
1440 }
1441 else if( (c1 < 3) && (c1 > 0) )
1442 {
1443 c1++;
1444 }
1445 }
1446
1447 if (c1 == 0)
1448 {
1449 baseCtxMod = m_cCUAbsSCModel.get( 0, 0 ) + (NUM_ABS_FLAG_CTX_PER_SET * uiCtxSet);
1450 if ( firstC2FlagIdx != -1)
1451 {
1452 UInt symbol = absCoeff[ firstC2FlagIdx ] > 2;
1453 m_pcBinIf->encodeBin( symbol, baseCtxMod[0] );
1454 if (symbol != 0)
1455 {
1456 escapeDataPresentInGroup = true;
1457 }
1458 }
1459 }
1460
1461 escapeDataPresentInGroup = escapeDataPresentInGroup || (numNonZero > C1FLAG_NUMBER);
1462
1463 if (escapeDataPresentInGroup && alignCABACBeforeBypass)
1464 {
1465 m_pcBinIf->align();
1466 }
1467
1468 if( beValid && signHidden )
1469 {
1470 m_pcBinIf->encodeBinsEP( (coeffSigns >> 1), numNonZero-1 );
1471 }
1472 else
1473 {
1474 m_pcBinIf->encodeBinsEP( coeffSigns, numNonZero );
1475 }
1476
1477 Int iFirstCoeff2 = 1;
1478 if (escapeDataPresentInGroup)
1479 {
1480 for ( Int idx = 0; idx < numNonZero; idx++ )
1481 {
1482 UInt baseLevel = (idx < C1FLAG_NUMBER)? (2 + iFirstCoeff2 ) : 1;
1483
1484 if( absCoeff[ idx ] >= baseLevel)
1485 {
1486 const UInt escapeCodeValue = absCoeff[idx] - baseLevel;
1487
1488 xWriteCoefRemainExGolomb( escapeCodeValue, uiGoRiceParam, extendedPrecision, channelType );
1489
1490 if (absCoeff[idx] > (3 << uiGoRiceParam))
1491 {
1492 uiGoRiceParam = bUseGolombRiceParameterAdaptation ? (uiGoRiceParam + 1) : (std::min<UInt>((uiGoRiceParam + 1), 4));
1493 }
1494
1495 if (updateGolombRiceStatistics)
1496 {
1497 const UInt initialGolombRiceParameter = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR;
1498
1499 if (escapeCodeValue >= (3 << initialGolombRiceParameter))
1500 {
1501 currentGolombRiceStatistic++;
1502 }
1503 else if (((escapeCodeValue * 2) < (1 << initialGolombRiceParameter)) && (currentGolombRiceStatistic > 0))
1504 {
1505 currentGolombRiceStatistic--;
1506 }
1507
1508 updateGolombRiceStatistics = false;
1509 }
1510 }
1511
1512 if(absCoeff[ idx ] >= 2)
1513 {
1514 iFirstCoeff2 = 0;
1515 }
1516 }
1517 }
1518 }
1519 }
1520 #if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST
1521 printSBACCoeffData(posLastX, posLastY, uiWidth, uiHeight, compID, uiAbsPartIdx, codingParameters.scanType, pcCoef, g_bFinalEncode);
1522 #endif
1523
1524 return;
1525 }
1526
1527 /** code SAO offset sign
1528 * \param code sign value
1529 */
1530 Void TEncSbac::codeSAOSign( UInt code )
1531 {
1532 m_pcBinIf->encodeBinEP( code );
1533 }
1534
1535 Void TEncSbac::codeSaoMaxUvlc ( UInt code, UInt maxSymbol )
1536 {
1537 if (maxSymbol == 0)
1538 {
1539 return;
1540 }
1541
1542 Int i;
1543 Bool bCodeLast = ( maxSymbol > code );
1544
1545 if ( code == 0 )
1546 {
1547 m_pcBinIf->encodeBinEP( 0 );
1548 }
1549 else
1550 {
1551 m_pcBinIf->encodeBinEP( 1 );
1552 for ( i=0; i<code-1; i++ )
1553 {
1554 m_pcBinIf->encodeBinEP( 1 );
1555 }
1556 if( bCodeLast )
1557 {
1558 m_pcBinIf->encodeBinEP( 0 );
1559 }
1560 }
1561 }
1562
1563 /** Code SAO EO class or BO band position
1564 * \param uiLength
1565 * \param uiCode
1566 */
1567 Void TEncSbac::codeSaoUflc ( UInt uiLength, UInt uiCode )
1568 {
1569 m_pcBinIf->encodeBinsEP ( uiCode, uiLength );
1570 }
1571
1572 /** Code SAO merge flags
1573 * \param uiCode
1574 * \param uiCompIdx
1575 */
1576 Void TEncSbac::codeSaoMerge ( UInt uiCode )
1577 {
1578 m_pcBinIf->encodeBin(((uiCode == 0) ? 0 : 1), m_cSaoMergeSCModel.get( 0, 0, 0 ));
1579 }
1580
1581 /** Code SAO type index
1582 * \param uiCode
1583 */
1584 Void TEncSbac::codeSaoTypeIdx ( UInt uiCode)
1585 {
1586 if (uiCode == 0)
1587 {
1588 m_pcBinIf->encodeBin( 0, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) );
1589 }
1590 else
1591 {
1592 m_pcBinIf->encodeBin( 1, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) );
1593 m_pcBinIf->encodeBinEP( uiCode == 1 ? 0 : 1 );
1594 }
1595 }
1596
1597 Void TEncSbac::codeSAOOffsetParam(ComponentID compIdx, SAOOffset& ctbParam, Bool sliceEnabled)
1598 {
1599 UInt uiSymbol;
1600 if(!sliceEnabled)
1601 {
1602 assert(ctbParam.modeIdc == SAO_MODE_OFF);
1603 return;
1604 }
1605 const Bool bIsFirstCompOfChType = (getFirstComponentOfChannel(toChannelType(compIdx)) == compIdx);
1606
1607 //type
1608 if(bIsFirstCompOfChType)
1609 {
1610 //sao_type_idx_luma or sao_type_idx_chroma
1611 if(ctbParam.modeIdc == SAO_MODE_OFF)
1612 {
1613 uiSymbol =0;
1614 }
1615 else if(ctbParam.typeIdc == SAO_TYPE_BO) //BO
1616 {
1617 uiSymbol = 1;
1618 }
1619 else
1620 {
1621 assert(ctbParam.typeIdc < SAO_TYPE_START_BO); //EO
1622 uiSymbol = 2;
1623 }
1624 codeSaoTypeIdx(uiSymbol);
1625 }
1626
1627 if(ctbParam.modeIdc == SAO_MODE_NEW)
1628 {
1629 Int numClasses = (ctbParam.typeIdc == SAO_TYPE_BO)?4:NUM_SAO_EO_CLASSES;
1630 Int offset[4];
1631 Int k=0;
1632 for(Int i=0; i< numClasses; i++)
1633 {
1634 if(ctbParam.typeIdc != SAO_TYPE_BO && i == SAO_CLASS_EO_PLAIN)
1635 {
1636 continue;
1637 }
1638 Int classIdx = (ctbParam.typeIdc == SAO_TYPE_BO)?( (ctbParam.typeAuxInfo+i)% NUM_SAO_BO_CLASSES ):i;
1639 offset[k] = ctbParam.offset[classIdx];
1640 k++;
1641 }
1642
1643 for(Int i=0; i< 4; i++)
1644 {
1645 codeSaoMaxUvlc((offset[i]<0)?(-offset[i]):(offset[i]), g_saoMaxOffsetQVal[compIdx] ); //sao_offset_abs
1646 }
1647
1648
1649 if(ctbParam.typeIdc == SAO_TYPE_BO)
1650 {
1651 for(Int i=0; i< 4; i++)
1652 {
1653 if(offset[i] != 0)
1654 {
1655 codeSAOSign((offset[i]< 0)?1:0);
1656 }
1657 }
1658
1659 codeSaoUflc(NUM_SAO_BO_CLASSES_LOG2, ctbParam.typeAuxInfo ); //sao_band_position
1660 }
1661 else //EO
1662 {
1663 if(bIsFirstCompOfChType)
1664 {
1665 assert(ctbParam.typeIdc - SAO_TYPE_START_EO >=0);
1666 codeSaoUflc(NUM_SAO_EO_TYPES_LOG2, ctbParam.typeIdc - SAO_TYPE_START_EO ); //sao_eo_class_luma or sao_eo_class_chroma
1667 }
1668 }
1669
1670 }
1671 }
1672
1673
1674 Void TEncSbac::codeSAOBlkParam(SAOBlkParam& saoBlkParam
1675 , Bool* sliceEnabled
1676 , Bool leftMergeAvail
1677 , Bool aboveMergeAvail
1678 , Bool onlyEstMergeInfo // = false
1679 )
1680 {
1681
1682 Bool isLeftMerge = false;
1683 Bool isAboveMerge= false;
1684
1685 if(leftMergeAvail)
1686 {
1687 isLeftMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_LEFT));
1688 codeSaoMerge( isLeftMerge?1:0 ); //sao_merge_left_flag
1689 }
1690
1691 if( aboveMergeAvail && !isLeftMerge)
1692 {
1693 isAboveMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_ABOVE));
1694 codeSaoMerge( isAboveMerge?1:0 ); //sao_merge_left_flag
1695 }
1696
1697 if(onlyEstMergeInfo)
1698 {
1699 return; //only for RDO
1700 }
1701
1702 if(!isLeftMerge && !isAboveMerge) //not merge mode
1703 {
1704 for(Int compIdx=0; compIdx < MAX_NUM_COMPONENT; compIdx++)
1705 {
1706 codeSAOOffsetParam(ComponentID(compIdx), saoBlkParam[compIdx], sliceEnabled[compIdx]);
1707 }
1708 }
1709 }
1710
1711 /*!
1712 ****************************************************************************
1713 * \brief
1714 * estimate bit cost for CBP, significant map and significant coefficients
1715 ****************************************************************************
1716 */
1717 Void TEncSbac::estBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
1718 {
1719 estCBFBit( pcEstBitsSbac );
1720
1721 estSignificantCoeffGroupMapBit( pcEstBitsSbac, chType );
1722
1723 // encode significance map
1724 estSignificantMapBit( pcEstBitsSbac, width, height, chType );
1725
1726 // encode last significant position
1727 estLastSignificantPositionBit( pcEstBitsSbac, width, height, chType );
1728
1729 // encode significant coefficients
1730 estSignificantCoefficientsBit( pcEstBitsSbac, chType );
1731
1732 memcpy(pcEstBitsSbac->golombRiceAdaptationStatistics, m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS));
1733 }
1734
1735 /*!
1736 ****************************************************************************
1737 * \brief
1738 * estimate bit cost for each CBP bit
1739 ****************************************************************************
1740 */
1741 Void TEncSbac::estCBFBit( estBitsSbacStruct* pcEstBitsSbac )
1742 {
1743 ContextModel *pCtx = m_cCUQtCbfSCModel.get( 0 );
1744
1745 for( UInt uiCtxInc = 0; uiCtxInc < (NUM_QT_CBF_CTX_SETS * NUM_QT_CBF_CTX_PER_SET); uiCtxInc++ )
1746 {
1747 pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 );
1748 pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 );
1749 }
1750
1751 pCtx = m_cCUQtRootCbfSCModel.get( 0 );
1752
1753 for( UInt uiCtxInc = 0; uiCtxInc < 4; uiCtxInc++ )
1754 {
1755 pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 );
1756 pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 );
1757 }
1758 }
1759
1760
1761 /*!
1762 ****************************************************************************
1763 * \brief
1764 * estimate SAMBAC bit cost for significant coefficient group map
1765 ****************************************************************************
1766 */
1767 Void TEncSbac::estSignificantCoeffGroupMapBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType )
1768 {
1769 Int firstCtx = 0, numCtx = NUM_SIG_CG_FLAG_CTX;
1770
1771 for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ )
1772 {
1773 for( UInt uiBin = 0; uiBin < 2; uiBin++ )
1774 {
1775 pcEstBitsSbac->significantCoeffGroupBits[ ctxIdx ][ uiBin ] = m_cCUSigCoeffGroupSCModel.get( 0, chType, ctxIdx ).getEntropyBits( uiBin );
1776 }
1777 }
1778 }
1779
1780
1781 /*!
1782 ****************************************************************************
1783 * \brief
1784 * estimate SAMBAC bit cost for significant coefficient map
1785 ****************************************************************************
1786 */
1787 Void TEncSbac::estSignificantMapBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
1788 {
1789 //--------------------------------------------------------------------------------------------------
1790
1791 //set up the number of channels and context variables
1792
1793 const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
1794 const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
1795
1796 //----------------------------------------------------------
1797
1798 Int firstCtx = MAX_INT;
1799 Int numCtx = MAX_INT;
1800
1801 if ((width == 4) && (height == 4))
1802 {
1803 firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_4x4];
1804 numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_4x4];
1805 }
1806 else if ((width == 8) && (height == 8))
1807 {
1808 firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_8x8];
1809 numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_8x8];
1810 }
1811 else
1812 {
1813 firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_NxN];
1814 numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_NxN];
1815 }
1816
1817 //--------------------------------------------------------------------------------------------------
1818
1819 //fill the data for the significace map
1820
1821 for (UInt component = firstComponent; component <= lastComponent; component++)
1822 {
1823 const UInt contextOffset = getSignificanceMapContextOffset(ComponentID(component));
1824
1825 if (firstCtx > 0)
1826 {
1827 for( UInt bin = 0; bin < 2; bin++ ) //always get the DC
1828 {
1829 pcEstBitsSbac->significantBits[ contextOffset ][ bin ] = m_cCUSigSCModel.get( 0, 0, contextOffset ).getEntropyBits( bin );
1830 }
1831 }
1832
1833 // This could be made optional, but would require this function to have knowledge of whether the
1834 // TU is transform-skipped or transquant-bypassed and whether the SPS flag is set
1835 for( UInt bin = 0; bin < 2; bin++ )
1836 {
1837 const Int ctxIdx = significanceMapContextSetStart[chType][CONTEXT_TYPE_SINGLE];
1838 pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ bin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( bin );
1839 }
1840
1841 for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ )
1842 {
1843 for( UInt uiBin = 0; uiBin < 2; uiBin++ )
1844 {
1845 pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ uiBin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( uiBin );
1846 }
1847 }
1848 }
1849
1850 //--------------------------------------------------------------------------------------------------
1851 }
1852
1853
1854 /*!
1855 ****************************************************************************
1856 * \brief
1857 * estimate bit cost of significant coefficient
1858 ****************************************************************************
1859 */
1860
1861 Void TEncSbac::estLastSignificantPositionBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
1862 {
1863 //--------------------------------------------------------------------------------------------------.
1864
1865 //set up the number of channels
1866
1867 const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
1868 const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
1869
1870 //--------------------------------------------------------------------------------------------------
1871
1872 //fill the data for the last-significant-coefficient position
1873
1874 for (UInt componentIndex = firstComponent; componentIndex <= lastComponent; componentIndex++)
1875 {
1876 const ComponentID component = ComponentID(componentIndex);
1877
1878 Int iBitsX = 0, iBitsY = 0;
1879
1880 Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY;
1881 getLastSignificantContextParameters(ComponentID(component), width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY);
1882
1883 Int ctx;
1884
1885 const ChannelType channelType = toChannelType(ComponentID(component));
1886
1887 ContextModel *const pCtxX = m_cCuCtxLastX.get( 0, channelType );
1888 ContextModel *const pCtxY = m_cCuCtxLastY.get( 0, channelType );
1889 Int *const lastXBitsArray = pcEstBitsSbac->lastXBits[channelType];
1890 Int *const lastYBitsArray = pcEstBitsSbac->lastYBits[channelType];
1891
1892 //------------------------------------------------
1893
1894 //X-coordinate
1895
1896 for (ctx = 0; ctx < g_uiGroupIdx[ width - 1 ]; ctx++)
1897 {
1898 Int ctxOffset = blkSizeOffsetX + (ctx >>shiftX);
1899 lastXBitsArray[ ctx ] = iBitsX + pCtxX[ ctxOffset ].getEntropyBits( 0 );
1900 iBitsX += pCtxX[ ctxOffset ].getEntropyBits( 1 );
1901 }
1902
1903 lastXBitsArray[ctx] = iBitsX;
1904
1905 //------------------------------------------------
1906
1907 //Y-coordinate
1908
1909 for (ctx = 0; ctx < g_uiGroupIdx[ height - 1 ]; ctx++)
1910 {
1911 Int ctxOffset = blkSizeOffsetY + (ctx >>shiftY);
1912 lastYBitsArray[ ctx ] = iBitsY + pCtxY[ ctxOffset ].getEntropyBits( 0 );
1913 iBitsY += pCtxY[ ctxOffset ].getEntropyBits( 1 );
1914 }
1915
1916 lastYBitsArray[ctx] = iBitsY;
1917
1918 } //end of component loop
1919
1920 //--------------------------------------------------------------------------------------------------
1921 }
1922
1923
1924 /*!
1925 ****************************************************************************
1926 * \brief
1927 * estimate bit cost of significant coefficient
1928 ****************************************************************************
1929 */
1930 Void TEncSbac::estSignificantCoefficientsBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType )
1931 {
1932 ContextModel *ctxOne = m_cCUOneSCModel.get(0, 0);
1933 ContextModel *ctxAbs = m_cCUAbsSCModel.get(0, 0);
1934
1935 const UInt oneStartIndex = ((isLuma(chType)) ? (0) : (NUM_ONE_FLAG_CTX_LUMA));
1936 const UInt oneStopIndex = ((isLuma(chType)) ? (NUM_ONE_FLAG_CTX_LUMA) : (NUM_ONE_FLAG_CTX));
1937 const UInt absStartIndex = ((isLuma(chType)) ? (0) : (NUM_ABS_FLAG_CTX_LUMA));
1938 const UInt absStopIndex = ((isLuma(chType)) ? (NUM_ABS_FLAG_CTX_LUMA) : (NUM_ABS_FLAG_CTX));
1939
1940 for (Int ctxIdx = oneStartIndex; ctxIdx < oneStopIndex; ctxIdx++)
1941 {
1942 pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 0 ] = ctxOne[ ctxIdx ].getEntropyBits( 0 );
1943 pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 1 ] = ctxOne[ ctxIdx ].getEntropyBits( 1 );
1944 }
1945
1946 for (Int ctxIdx = absStartIndex; ctxIdx < absStopIndex; ctxIdx++)
1947 {
1948 pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 0 ] = ctxAbs[ ctxIdx ].getEntropyBits( 0 );
1949 pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 1 ] = ctxAbs[ ctxIdx ].getEntropyBits( 1 );
1950 }
1951 }
1952
1953 /**
1954 - Initialize our context information from the nominated source.
1955 .
1956 \param pSrc From where to copy context information.
1957 */
1958 Void TEncSbac::xCopyContextsFrom( const TEncSbac* pSrc )
1959 {
1960 memcpy(m_contextModels, pSrc->m_contextModels, m_numContextModels*sizeof(m_contextModels[0]));
1961 memcpy(m_golombRiceAdaptationStatistics, pSrc->m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS));
1962 }
1963
1964 Void TEncSbac::loadContexts ( const TEncSbac* pSrc)
1965 {
1966 xCopyContextsFrom(pSrc);
1967 }
1968
1969 /** Performs CABAC encoding of the explicit RDPCM mode
1970 * \param rTu current TU data structure
1971 * \param compID component identifier
1972 */
1973 Void TEncSbac::codeExplicitRdpcmMode( TComTU &rTu, const ComponentID compID )
1974 {
1975 TComDataCU *cu = rTu.getCU();
1976 const TComRectangle &rect = rTu.getRect(compID);
1977 const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID);
1978 const UInt tuHeight = g_aucConvertToBit[rect.height];
1979 const UInt tuWidth = g_aucConvertToBit[rect.width];
1980
1981 assert(tuHeight == tuWidth);
1982 assert(tuHeight < 4);
1983
1984 UInt explicitRdpcmMode = cu->getExplicitRdpcmMode(compID, absPartIdx);
1985
1986 if( explicitRdpcmMode == RDPCM_OFF )
1987 {
1988 m_pcBinIf->encodeBin (0, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0));
1989 }
1990 else if( explicitRdpcmMode == RDPCM_HOR || explicitRdpcmMode == RDPCM_VER )
1991 {
1992 m_pcBinIf->encodeBin (1, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0));
1993 if(explicitRdpcmMode == RDPCM_HOR)
1994 {
1995 m_pcBinIf->encodeBin ( 0, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0));
1996 }
1997 else
1998 {
1999 m_pcBinIf->encodeBin ( 1, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0));
2000 }
2001 }
2002 else
2003 {
2004 assert(0);
2005 }
2006 }
2007
2008 //! \}