source: SHVCSoftware/branches/SHM-1.1-dev/source/Lib/TLibDecoder/TDecTop.cpp @ 462

Last change on this file since 462 was 42, checked in by seregin, 12 years ago

initializing base layer reference lists by copying the enhancement layer picture lists structure for the AVC metadata file reading

File size: 38.1 KB
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1/* The copyright in this software is being made available under the BSD
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33
34/** \file     TDecTop.cpp
35    \brief    decoder class
36*/
37
38#include "NALread.h"
39#include "TDecTop.h"
40
41#if SVC_EXTENSION
42ParameterSetManagerDecoder TDecTop::m_parameterSetManagerDecoder;  // storage for parameter sets
43UInt  TDecTop::m_prevPOC = MAX_UINT;
44UInt  TDecTop::m_uiPrevLayerId = MAX_UINT;
45Bool  TDecTop::m_bFirstSliceInSequence = true;
46#endif
47
48//! \ingroup TLibDecoder
49//! \{
50
51TDecTop::TDecTop()
52: m_SEIs(0)
53{
54  m_pcPic = 0;
55  m_iGopSize      = 0;
56  m_bGopSizeSet   = false;
57  m_iMaxRefPicNum = 0;
58#if ENC_DEC_TRACE
59  g_hTrace = fopen( "TraceDec.txt", "wb" );
60  g_bJustDoIt = g_bEncDecTraceDisable;
61  g_nSymbolCounter = 0;
62#endif
63  m_bRefreshPending = 0;
64  m_pocCRA = 0;
65  m_prevRAPisBLA = false;
66  m_pocRandomAccess = MAX_INT;         
67#if !SVC_EXTENSION
68  m_prevPOC                = MAX_INT;
69#endif
70  m_bFirstSliceInPicture    = true;
71#if !SVC_EXTENSION
72  m_bFirstSliceInSequence   = true;
73#endif
74#if SVC_EXTENSION
75  m_layerId = 0;
76#if AVC_BASE
77  m_pBLReconFile = NULL;
78#endif
79#endif
80#if REF_IDX_FRAMEWORK
81  memset(m_cIlpPic, 0, sizeof(m_cIlpPic));
82#endif
83#if AVC_SYNTAX || SYNTAX_OUTPUT
84  m_pBLSyntaxFile = NULL;
85#endif
86
87}
88
89TDecTop::~TDecTop()
90{
91#if ENC_DEC_TRACE
92  fclose( g_hTrace );
93#endif
94}
95
96Void TDecTop::create()
97{
98#if SVC_EXTENSION
99  m_cGopDecoder.create( m_layerId );
100#else
101  m_cGopDecoder.create();
102#endif
103  m_apcSlicePilot = new TComSlice;
104  m_uiSliceIdx = 0;
105}
106
107Void TDecTop::destroy()
108{
109  m_cGopDecoder.destroy();
110 
111  delete m_apcSlicePilot;
112  m_apcSlicePilot = NULL;
113 
114  m_cSliceDecoder.destroy();
115#if REF_IDX_FRAMEWORK
116  for(Int i=0; i<MAX_NUM_REF; i++)
117  {
118    if(m_cIlpPic[i])
119    {
120      //m_cIlpPic[i]->setPicYuvRec(NULL);
121      m_cIlpPic[i]->destroy();
122      delete m_cIlpPic[i];
123      m_cIlpPic[i] = NULL;
124    }
125  }   
126#endif
127}
128
129Void TDecTop::init()
130{
131#if !SVC_EXTENSION
132  // initialize ROM
133  initROM();
134#endif
135#if SVC_EXTENSION
136#if REMOVE_ALF
137  m_cGopDecoder.init( m_ppcTDecTop, &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cSAO);
138#else
139  m_cGopDecoder.init( m_ppcTDecTop, &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cAdaptiveLoopFilter, &m_cSAO);
140#endif
141  m_cSliceDecoder.init( m_ppcTDecTop, &m_cEntropyDecoder, &m_cCuDecoder );
142#else
143#if REMOVE_ALF
144  m_cGopDecoder.init( &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cSAO);
145#else
146  m_cGopDecoder.init( &m_cEntropyDecoder, &m_cSbacDecoder, &m_cBinCABAC, &m_cCavlcDecoder, &m_cSliceDecoder, &m_cLoopFilter, &m_cAdaptiveLoopFilter, &m_cSAO);
147#endif
148  m_cSliceDecoder.init( &m_cEntropyDecoder, &m_cCuDecoder );
149#endif
150  m_cEntropyDecoder.init(&m_cPrediction);
151}
152
153#if REF_IDX_FRAMEWORK
154Void TDecTop::xInitILRP(TComSPS *pcSPS)
155{
156  if(m_layerId>0)
157  {
158    if (m_cIlpPic[0] == NULL)
159    {
160      for (Int j=0; j<1/*MAX_NUM_REF*/; j++)
161      {
162        m_cIlpPic[j] = new  TComPic;
163        //m_cIlpPic[j]->createWithOutYuv(m_iSourceWidth, m_iSourceHeight, g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, &m_cSPS, true);
164#if SVC_UPSAMPLING
165        m_cIlpPic[j]->create(pcSPS->getPicWidthInLumaSamples(), pcSPS->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, pcSPS, true);
166#else
167        m_cIlpPic[j]->create(pcSPS->getPicWidthInLumaSamples(), pcSPS->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, true);
168#endif
169#if REF_IDX_ME_AROUND_ZEROMV || REF_IDX_ME_ZEROMV || REF_IDX_MFM
170        m_cIlpPic[j]->setIsILR(true);
171#endif
172        for (Int i=0; i<m_cIlpPic[j]->getPicSym()->getNumberOfCUsInFrame(); i++)
173        {
174          m_cIlpPic[j]->getPicSym()->getCU(i)->initCU(m_cIlpPic[j], i);
175        }
176      }
177    }
178  }
179}
180
181Void TDecTop::setILRPic(TComPic *pcPic)
182{
183  if(m_cIlpPic[0])
184  {
185    //m_cIlpPic[0]->setPicYuvRec(pcPic->getFullPelBaseRec());
186    m_cIlpPic[0]->copyUpsampledPictureYuv(pcPic->getFullPelBaseRec(), m_cIlpPic[0]->getPicYuvRec());
187    m_cIlpPic[0]->getSlice(0)->setPOC(pcPic->getPOC());
188    m_cIlpPic[0]->getPicYuvRec()->setBorderExtension(false);
189    m_cIlpPic[0]->getPicYuvRec()->extendPicBorder();
190  }
191}
192#endif
193
194Void TDecTop::deletePicBuffer ( )
195{
196  TComList<TComPic*>::iterator  iterPic   = m_cListPic.begin();
197  Int iSize = Int( m_cListPic.size() );
198 
199  for (Int i = 0; i < iSize; i++ )
200  {
201    TComPic* pcPic = *(iterPic++);
202#if SVC_EXTENSION
203    if( pcPic )
204    {
205      pcPic->destroy();
206
207      delete pcPic;
208      pcPic = NULL;
209    }
210#else
211    pcPic->destroy();
212   
213    delete pcPic;
214    pcPic = NULL;
215#endif
216  }
217 
218#if !REMOVE_ALF
219  // destroy ALF temporary buffers
220  m_cAdaptiveLoopFilter.destroy();
221#endif
222 
223  m_cSAO.destroy();
224 
225  m_cLoopFilter.        destroy();
226 
227#if !SVC_EXTENSION
228  // destroy ROM
229  destroyROM();
230#endif
231}
232
233Void TDecTop::xUpdateGopSize (TComSlice* pcSlice)
234{
235  if ( !pcSlice->isIntra() && !m_bGopSizeSet)
236  {
237    m_iGopSize    = pcSlice->getPOC();
238    m_bGopSizeSet = true;
239   
240    m_cGopDecoder.setGopSize(m_iGopSize);
241  }
242}
243
244Void TDecTop::xGetNewPicBuffer ( TComSlice* pcSlice, TComPic*& rpcPic )
245{
246  xUpdateGopSize(pcSlice);
247 
248  m_iMaxRefPicNum = pcSlice->getSPS()->getMaxDecPicBuffering(pcSlice->getTLayer())+pcSlice->getSPS()->getNumReorderPics(pcSlice->getTLayer()) + 1; // +1 to have space for the picture currently being decoded
249  if (m_cListPic.size() < (UInt)m_iMaxRefPicNum)
250  {
251    rpcPic = new TComPic();
252   
253#if SVC_EXTENSION //Temporal solution, should be modified
254    if(m_layerId > 0)
255    {
256      TDecTop *pcTDecTopBase = (TDecTop *)getLayerDec( m_layerId-1 );
257      //TComPic*                      pcPic = *(pcTDecTopBase->getListPic()->begin());
258      TComPicYuv* pcPicYuvRecBase = (*(pcTDecTopBase->getListPic()->begin()))->getPicYuvRec(); 
259      if(pcPicYuvRecBase->getWidth() != pcSlice->getSPS()->getPicWidthInLumaSamples() || pcPicYuvRecBase->getHeight() != pcSlice->getSPS()->getPicHeightInLumaSamples() )
260      {
261        rpcPic->setSpatialEnhLayerFlag( true );
262      }
263    }
264#endif
265   
266#if SVC_UPSAMPLING
267    rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, pcSlice->getSPS(), true);
268#else
269    rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, true);
270#endif
271
272#if REMOVE_APS
273    rpcPic->getPicSym()->allocSaoParam(&m_cSAO);
274#endif
275
276
277    m_cListPic.pushBack( rpcPic );
278   
279    return;
280  }
281 
282  Bool bBufferIsAvailable = false;
283  TComList<TComPic*>::iterator  iterPic   = m_cListPic.begin();
284  while (iterPic != m_cListPic.end())
285  {
286    rpcPic = *(iterPic++);
287    if ( rpcPic->getReconMark() == false && rpcPic->getOutputMark() == false)
288    {
289      rpcPic->setOutputMark(false);
290      bBufferIsAvailable = true;
291      break;
292    }
293
294    if ( rpcPic->getSlice( 0 )->isReferenced() == false  && rpcPic->getOutputMark() == false)
295    {
296#if !SVC_EXTENSION
297      rpcPic->setOutputMark(false);
298#endif
299      rpcPic->setReconMark( false );
300      rpcPic->getPicYuvRec()->setBorderExtension( false );
301      bBufferIsAvailable = true;
302      break;
303    }
304  }
305 
306  if ( !bBufferIsAvailable )
307  {
308    //There is no room for this picture, either because of faulty encoder or dropped NAL. Extend the buffer.
309    m_iMaxRefPicNum++;
310    rpcPic = new TComPic();
311    m_cListPic.pushBack( rpcPic );
312  }
313  rpcPic->destroy();
314
315#if SVC_UPSAMPLING
316  rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, pcSlice->getSPS(), true);
317#else
318  rpcPic->create ( pcSlice->getSPS()->getPicWidthInLumaSamples(), pcSlice->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, true);
319#endif
320#if REMOVE_APS
321  rpcPic->getPicSym()->allocSaoParam(&m_cSAO);
322#endif
323
324
325}
326
327Void TDecTop::executeDeblockAndAlf(UInt& ruiPOC, TComList<TComPic*>*& rpcListPic, Int& iSkipFrame, Int& iPOCLastDisplay)
328{
329  if (!m_pcPic)
330  {
331    /* nothing to deblock */
332    return;
333  }
334 
335  TComPic*&   pcPic         = m_pcPic;
336
337  // Execute Deblock and ALF only + Cleanup
338
339  m_cGopDecoder.filterPicture(pcPic);
340
341#if SYNTAX_OUTPUT
342  pcPic->wrireBLSyntax( getBLSyntaxFile(), SYNTAX_BYTES );
343#endif
344
345  TComSlice::sortPicList( m_cListPic ); // sorting for application output
346  ruiPOC              = pcPic->getSlice(m_uiSliceIdx-1)->getPOC();
347  rpcListPic          = &m_cListPic; 
348  m_cCuDecoder.destroy();       
349  m_bFirstSliceInPicture  = true;
350
351  return;
352}
353
354Void TDecTop::xCreateLostPicture(Int iLostPoc) 
355{
356  printf("\ninserting lost poc : %d\n",iLostPoc);
357  TComSlice cFillSlice;
358  cFillSlice.setSPS( m_parameterSetManagerDecoder.getFirstSPS() );
359  cFillSlice.setPPS( m_parameterSetManagerDecoder.getFirstPPS() );
360#if SET_SLICE_LAYER_ID
361  cFillSlice.initSlice( m_parameterSetManagerDecoder.getFirstSPS()->getLayerId() );
362#else
363  cFillSlice.initSlice();
364#endif
365  TComPic *cFillPic;
366  xGetNewPicBuffer(&cFillSlice,cFillPic);
367  cFillPic->getSlice(0)->setSPS( m_parameterSetManagerDecoder.getFirstSPS() );
368  cFillPic->getSlice(0)->setPPS( m_parameterSetManagerDecoder.getFirstPPS() );
369#if SET_SLICE_LAYER_ID
370  cFillPic->getSlice(0)->initSlice( cFillPic->getLayerId() );
371#else
372  cFillPic->getSlice(0)->initSlice();
373#endif
374 
375  TComList<TComPic*>::iterator iterPic = m_cListPic.begin();
376  Int closestPoc = 1000000;
377  while ( iterPic != m_cListPic.end())
378  {
379    TComPic * rpcPic = *(iterPic++);
380    if(abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)<closestPoc&&abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)!=0&&rpcPic->getPicSym()->getSlice(0)->getPOC()!=m_apcSlicePilot->getPOC())
381    {
382      closestPoc=abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc);
383    }
384  }
385  iterPic = m_cListPic.begin();
386  while ( iterPic != m_cListPic.end())
387  {
388    TComPic *rpcPic = *(iterPic++);
389    if(abs(rpcPic->getPicSym()->getSlice(0)->getPOC() -iLostPoc)==closestPoc&&rpcPic->getPicSym()->getSlice(0)->getPOC()!=m_apcSlicePilot->getPOC())
390    {
391      printf("copying picture %d to %d (%d)\n",rpcPic->getPicSym()->getSlice(0)->getPOC() ,iLostPoc,m_apcSlicePilot->getPOC());
392      rpcPic->getPicYuvRec()->copyToPic(cFillPic->getPicYuvRec());
393      break;
394    }
395  }
396  cFillPic->setCurrSliceIdx(0);
397  for(Int i=0; i<cFillPic->getNumCUsInFrame(); i++) 
398  {
399    cFillPic->getCU(i)->initCU(cFillPic,i);
400  }
401  cFillPic->getSlice(0)->setReferenced(true);
402  cFillPic->getSlice(0)->setPOC(iLostPoc);
403  cFillPic->setReconMark(true);
404  cFillPic->setOutputMark(true);
405  if(m_pocRandomAccess == MAX_INT)
406  {
407    m_pocRandomAccess = iLostPoc;
408  }
409}
410
411
412Void TDecTop::xActivateParameterSets()
413{
414  m_parameterSetManagerDecoder.applyPrefetchedPS();
415
416  TComPPS *pps = m_parameterSetManagerDecoder.getPPS(m_apcSlicePilot->getPPSId());
417  assert (pps != 0);
418
419  TComSPS *sps = m_parameterSetManagerDecoder.getSPS(pps->getSPSId());
420  assert (sps != 0);
421
422  m_apcSlicePilot->setPPS(pps);
423  m_apcSlicePilot->setSPS(sps);
424  pps->setSPS(sps);
425#if TILES_WPP_ENTROPYSLICES_FLAGS
426  pps->setNumSubstreams(pps->getEntropyCodingSyncEnabledFlag() ? ((sps->getPicHeightInLumaSamples() + sps->getMaxCUHeight() - 1) / sps->getMaxCUHeight()) * (pps->getNumColumnsMinus1() + 1) : 1);
427#else
428  pps->setNumSubstreams(pps->getTilesOrEntropyCodingSyncIdc() == 2 ? ((sps->getPicHeightInLumaSamples() + sps->getMaxCUHeight() - 1) / sps->getMaxCUHeight()) * (pps->getNumColumnsMinus1() + 1) : 1);
429#endif
430#if !REMOVE_APS
431#if REMOVE_ALF
432  if(sps->getUseSAO())
433#else
434  if(sps->getUseSAO() || sps->getUseALF())
435#endif
436  {
437    m_apcSlicePilot->setAPS( m_parameterSetManagerDecoder.getAPS(m_apcSlicePilot->getAPSId())  );
438  }
439#endif
440  pps->setMinCuDQPSize( sps->getMaxCUWidth() >> ( pps->getMaxCuDQPDepth()) );
441
442  for (Int i = 0; i < sps->getMaxCUDepth() - g_uiAddCUDepth; i++)
443  {
444    sps->setAMPAcc( i, sps->getUseAMP() );
445  }
446
447  for (Int i = sps->getMaxCUDepth() - g_uiAddCUDepth; i < sps->getMaxCUDepth(); i++)
448  {
449    sps->setAMPAcc( i, 0 );
450  }
451
452  m_cSAO.destroy();
453  m_cSAO.create( sps->getPicWidthInLumaSamples(), sps->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth );
454  m_cLoopFilter.        create( g_uiMaxCUDepth );
455}
456
457#if SVC_EXTENSION
458Bool TDecTop::xDecodeSlice(InputNALUnit &nalu, Int &iSkipFrame, Int iPOCLastDisplay, UInt& curLayerId, Bool& bNewPOC )
459#else
460Bool TDecTop::xDecodeSlice(InputNALUnit &nalu, Int &iSkipFrame, Int iPOCLastDisplay )
461#endif
462{
463  TComPic*&   pcPic         = m_pcPic;
464#if SET_SLICE_LAYER_ID
465  m_apcSlicePilot->initSlice( nalu.m_layerId );
466#else
467  m_apcSlicePilot->initSlice();
468#endif
469
470  if (m_bFirstSliceInPicture)
471  {
472    m_uiSliceIdx     = 0;
473  }
474  m_apcSlicePilot->setSliceIdx(m_uiSliceIdx);
475  if (!m_bFirstSliceInPicture)
476  {
477    m_apcSlicePilot->copySliceInfo( pcPic->getPicSym()->getSlice(m_uiSliceIdx-1) );
478  }
479
480  m_apcSlicePilot->setNalUnitType(nalu.m_nalUnitType);
481#if TEMPORAL_LAYER_NON_REFERENCE
482  if((m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TRAIL_N) ||
483     (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TSA_N) ||
484     (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_STSA_N))
485  {
486    m_apcSlicePilot->setTemporalLayerNonReferenceFlag(true);
487  }
488#endif
489#if REMOVE_NAL_REF_FLAG
490  m_apcSlicePilot->setReferenced(true); // Putting this as true ensures that picture is referenced the first time it is in an RPS
491#else
492  m_apcSlicePilot->setReferenced(nalu.m_nalRefFlag);
493#endif
494  m_apcSlicePilot->setTLayerInfo(nalu.m_temporalId);
495  m_cEntropyDecoder.decodeSliceHeader (m_apcSlicePilot, &m_parameterSetManagerDecoder);
496#if !BYTE_ALIGNMENT
497  // byte align
498  {
499    Int numBitsForByteAlignment = nalu.m_Bitstream->getNumBitsUntilByteAligned();
500    if ( numBitsForByteAlignment > 0 )
501    {
502      UInt bitsForByteAlignment;
503      nalu.m_Bitstream->read( numBitsForByteAlignment, bitsForByteAlignment );
504      assert( bitsForByteAlignment == ( ( 1 << numBitsForByteAlignment ) - 1 ) );
505    }
506  }
507#endif
508  // exit when a new picture is found
509#if SVC_EXTENSION
510  bNewPOC = (m_apcSlicePilot->getPOC()!= m_prevPOC);
511  if (m_apcSlicePilot->isNextSlice() && (bNewPOC || m_layerId!=m_uiPrevLayerId)
512    && !m_bFirstSliceInSequence )
513  {
514    m_prevPOC = m_apcSlicePilot->getPOC();
515    curLayerId = m_uiPrevLayerId; 
516    m_uiPrevLayerId = m_layerId;
517    return true;
518  }
519#else
520  if (m_apcSlicePilot->isNextSlice() && m_apcSlicePilot->getPOC()!=m_prevPOC && !m_bFirstSliceInSequence)
521  {
522    if (m_prevPOC >= m_pocRandomAccess)
523    {
524      m_prevPOC = m_apcSlicePilot->getPOC();
525      return true;
526    }
527    m_prevPOC = m_apcSlicePilot->getPOC();
528  }
529#endif
530  // actual decoding starts here
531  xActivateParameterSets();
532
533  if (m_apcSlicePilot->isNextSlice()) 
534  {
535    m_prevPOC = m_apcSlicePilot->getPOC();
536#if SVC_EXTENSION
537    curLayerId = m_layerId;
538    m_uiPrevLayerId = m_layerId;
539#endif
540  }
541  m_bFirstSliceInSequence = false;
542  if (m_apcSlicePilot->isNextSlice())
543  {
544    // Skip pictures due to random access
545    if (isRandomAccessSkipPicture(iSkipFrame, iPOCLastDisplay))
546    {
547      return false;
548    }
549    // Skip TFD pictures associated with BLA/BLANT pictures
550    if (isSkipPictureForBLA(iPOCLastDisplay))
551    {
552      return false;
553    }
554  }
555  //detect lost reference picture and insert copy of earlier frame.
556  Int lostPoc;
557  while((lostPoc=m_apcSlicePilot->checkThatAllRefPicsAreAvailable(m_cListPic, m_apcSlicePilot->getRPS(), true, m_pocRandomAccess)) > 0)
558  {
559    xCreateLostPicture(lostPoc-1);
560  }
561  if (m_bFirstSliceInPicture)
562  {
563#if AVC_BASE
564  if( m_layerId == 1 )
565  {
566    TComPic* pBLPic = (*m_ppcTDecTop[0]->getListPic()->begin());
567    fstream* pFile  = m_ppcTDecTop[0]->getBLReconFile();
568    UInt uiWidth    = pBLPic->getPicYuvRec()->getWidth() - pBLPic->getPicYuvRec()->getPicCropLeftOffset() - pBLPic->getPicYuvRec()->getPicCropRightOffset();;
569    UInt uiHeight   = pBLPic->getPicYuvRec()->getHeight() - pBLPic->getPicYuvRec()->getPicCropTopOffset() - pBLPic->getPicYuvRec()->getPicCropBottomOffset();
570       
571    if( pFile->good() )
572    {
573      UInt64 uiPos = (UInt64) m_apcSlicePilot->getPOC() * uiWidth * uiHeight * 3 / 2;
574
575      pFile->seekg((UInt)uiPos, ios::beg );
576
577      Pel* pPel = pBLPic->getPicYuvRec()->getLumaAddr();
578      UInt uiStride = pBLPic->getPicYuvRec()->getStride();
579      for( Int i = 0; i < uiHeight; i++ )
580      {
581        for( Int j = 0; j < uiWidth; j++ )
582        {
583          pPel[j] = pFile->get();
584        }
585        pPel += uiStride;
586      }
587
588      pPel = pBLPic->getPicYuvRec()->getCbAddr();
589      uiStride = pBLPic->getPicYuvRec()->getCStride();
590      for( Int i = 0; i < uiHeight/2; i++ )
591      {
592        for( Int j = 0; j < uiWidth/2; j++ )
593        {
594          pPel[j] = pFile->get();
595        }
596        pPel += uiStride;
597      }
598
599      pPel = pBLPic->getPicYuvRec()->getCrAddr();
600      uiStride = pBLPic->getPicYuvRec()->getCStride();
601      for( Int i = 0; i < uiHeight/2; i++ )
602      {
603        for( Int j = 0; j < uiWidth/2; j++ )
604        {
605          pPel[j] = pFile->get();
606        }
607        pPel += uiStride;
608      }
609    }
610  }
611#endif
612
613    // Buffer initialize for prediction.
614    m_cPrediction.initTempBuff();
615    m_apcSlicePilot->applyReferencePictureSet(m_cListPic, m_apcSlicePilot->getRPS());
616    //  Get a new picture buffer
617    xGetNewPicBuffer (m_apcSlicePilot, pcPic);
618
619    /* transfer any SEI messages that have been received to the picture */
620    pcPic->setSEIs(m_SEIs);
621    m_SEIs = NULL;
622
623    // Recursive structure
624    m_cCuDecoder.create ( g_uiMaxCUDepth, g_uiMaxCUWidth, g_uiMaxCUHeight );
625#if SVC_EXTENSION
626    m_cCuDecoder.init   ( m_ppcTDecTop,&m_cEntropyDecoder, &m_cTrQuant, &m_cPrediction, curLayerId );
627#else
628    m_cCuDecoder.init   ( &m_cEntropyDecoder, &m_cTrQuant, &m_cPrediction );
629#endif
630    m_cTrQuant.init     ( g_uiMaxCUWidth, g_uiMaxCUHeight, m_apcSlicePilot->getSPS()->getMaxTrSize());
631
632    m_cSliceDecoder.create( m_apcSlicePilot, m_apcSlicePilot->getSPS()->getPicWidthInLumaSamples(), m_apcSlicePilot->getSPS()->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth );
633  }
634
635  //  Set picture slice pointer
636  TComSlice*  pcSlice = m_apcSlicePilot;
637  Bool bNextSlice     = pcSlice->isNextSlice();
638
639  UInt uiCummulativeTileWidth;
640  UInt uiCummulativeTileHeight;
641  UInt i, j, p;
642
643  //set NumColumnsMins1 and NumRowsMinus1
644  pcPic->getPicSym()->setNumColumnsMinus1( pcSlice->getPPS()->getNumColumnsMinus1() );
645  pcPic->getPicSym()->setNumRowsMinus1( pcSlice->getPPS()->getNumRowsMinus1() );
646
647  //create the TComTileArray
648  pcPic->getPicSym()->xCreateTComTileArray();
649
650  if( pcSlice->getPPS()->getUniformSpacingFlag() )
651  {
652    //set the width for each tile
653    for(j=0; j < pcPic->getPicSym()->getNumRowsMinus1()+1; j++)
654    {
655      for(p=0; p < pcPic->getPicSym()->getNumColumnsMinus1()+1; p++)
656      {
657        pcPic->getPicSym()->getTComTile( j * (pcPic->getPicSym()->getNumColumnsMinus1()+1) + p )->
658          setTileWidth( (p+1)*pcPic->getPicSym()->getFrameWidthInCU()/(pcPic->getPicSym()->getNumColumnsMinus1()+1) 
659          - (p*pcPic->getPicSym()->getFrameWidthInCU())/(pcPic->getPicSym()->getNumColumnsMinus1()+1) );
660      }
661    }
662
663    //set the height for each tile
664    for(j=0; j < pcPic->getPicSym()->getNumColumnsMinus1()+1; j++)
665    {
666      for(p=0; p < pcPic->getPicSym()->getNumRowsMinus1()+1; p++)
667      {
668        pcPic->getPicSym()->getTComTile( p * (pcPic->getPicSym()->getNumColumnsMinus1()+1) + j )->
669          setTileHeight( (p+1)*pcPic->getPicSym()->getFrameHeightInCU()/(pcPic->getPicSym()->getNumRowsMinus1()+1) 
670          - (p*pcPic->getPicSym()->getFrameHeightInCU())/(pcPic->getPicSym()->getNumRowsMinus1()+1) );   
671      }
672    }
673  }
674  else
675  {
676    //set the width for each tile
677    for(j=0; j < pcSlice->getPPS()->getNumRowsMinus1()+1; j++)
678    {
679      uiCummulativeTileWidth = 0;
680      for(i=0; i < pcSlice->getPPS()->getNumColumnsMinus1(); i++)
681      {
682        pcPic->getPicSym()->getTComTile(j * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + i)->setTileWidth( pcSlice->getPPS()->getColumnWidth(i) );
683        uiCummulativeTileWidth += pcSlice->getPPS()->getColumnWidth(i);
684      }
685      pcPic->getPicSym()->getTComTile(j * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + i)->setTileWidth( pcPic->getPicSym()->getFrameWidthInCU()-uiCummulativeTileWidth );
686    }
687
688    //set the height for each tile
689    for(j=0; j < pcSlice->getPPS()->getNumColumnsMinus1()+1; j++)
690    {
691      uiCummulativeTileHeight = 0;
692      for(i=0; i < pcSlice->getPPS()->getNumRowsMinus1(); i++)
693      { 
694        pcPic->getPicSym()->getTComTile(i * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + j)->setTileHeight( pcSlice->getPPS()->getRowHeight(i) );
695        uiCummulativeTileHeight += pcSlice->getPPS()->getRowHeight(i);
696      }
697      pcPic->getPicSym()->getTComTile(i * (pcSlice->getPPS()->getNumColumnsMinus1()+1) + j)->setTileHeight( pcPic->getPicSym()->getFrameHeightInCU()-uiCummulativeTileHeight );
698    }
699  }
700
701  pcPic->getPicSym()->xInitTiles();
702
703  //generate the Coding Order Map and Inverse Coding Order Map
704  UInt uiEncCUAddr;
705  for(i=0, uiEncCUAddr=0; i<pcPic->getPicSym()->getNumberOfCUsInFrame(); i++, uiEncCUAddr = pcPic->getPicSym()->xCalculateNxtCUAddr(uiEncCUAddr))
706  {
707    pcPic->getPicSym()->setCUOrderMap(i, uiEncCUAddr);
708    pcPic->getPicSym()->setInverseCUOrderMap(uiEncCUAddr, i);
709  }
710  pcPic->getPicSym()->setCUOrderMap(pcPic->getPicSym()->getNumberOfCUsInFrame(), pcPic->getPicSym()->getNumberOfCUsInFrame());
711  pcPic->getPicSym()->setInverseCUOrderMap(pcPic->getPicSym()->getNumberOfCUsInFrame(), pcPic->getPicSym()->getNumberOfCUsInFrame());
712
713  //convert the start and end CU addresses of the slice and dependent slice into encoding order
714  pcSlice->setDependentSliceCurStartCUAddr( pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getDependentSliceCurStartCUAddr()) );
715  pcSlice->setDependentSliceCurEndCUAddr( pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getDependentSliceCurEndCUAddr()) );
716  if(pcSlice->isNextSlice())
717  {
718    pcSlice->setSliceCurStartCUAddr(pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceCurStartCUAddr()));
719    pcSlice->setSliceCurEndCUAddr(pcPic->getPicSym()->getPicSCUEncOrder(pcSlice->getSliceCurEndCUAddr()));
720  }
721
722  if (m_bFirstSliceInPicture) 
723  {
724    if(pcPic->getNumAllocatedSlice() != 1)
725    {
726      pcPic->clearSliceBuffer();
727    }
728  }
729  else
730  {
731    pcPic->allocateNewSlice();
732  }
733  assert(pcPic->getNumAllocatedSlice() == (m_uiSliceIdx + 1));
734  m_apcSlicePilot = pcPic->getPicSym()->getSlice(m_uiSliceIdx); 
735  pcPic->getPicSym()->setSlice(pcSlice, m_uiSliceIdx);
736
737  pcPic->setTLayer(nalu.m_temporalId);
738
739#if SVC_EXTENSION
740  pcPic->setLayerId(nalu.m_layerId);
741  pcSlice->setLayerId(nalu.m_layerId);
742#endif
743
744  if (bNextSlice)
745  {
746    pcSlice->checkCRA(pcSlice->getRPS(), m_pocCRA, m_prevRAPisBLA, m_cListPic);
747#if !REF_IDX_FRAMEWORK || AVC_SYNTAX
748    // Set reference list
749    pcSlice->setRefPicList( m_cListPic );
750#endif
751
752#if SVC_EXTENSION   
753    if(m_layerId > 0)
754    {
755#if AVC_BASE
756      pcSlice->setBaseColPic ( *m_ppcTDecTop[0]->getListPic()->begin() );
757#if AVC_SYNTAX
758      TComPic* pBLPic = pcSlice->getBaseColPic();
759      if( pcSlice->getPOC() == 0 )
760      {
761        // initialize partition order.
762        UInt* piTmp = &g_auiZscanToRaster[0];
763        initZscanToRaster( pBLPic->getPicSym()->getMaxDepth() + 1, 1, 0, piTmp );
764        initRasterToZscan( pBLPic->getPicSym()->getMaxCUWidth(), pBLPic->getPicSym()->getMaxCUHeight(), pBLPic->getPicSym()->getMaxDepth() + 1 );
765      }     
766      pBLPic->getSlice( 0 )->initBaseLayerRPL( pcSlice );
767      pBLPic->readBLSyntax( m_ppcTDecTop[0]->getBLSyntaxFile(), SYNTAX_BYTES );
768#endif
769
770#else
771      TDecTop *pcTDecTop = (TDecTop *)getLayerDec( m_layerId-1 );
772      TComList<TComPic*> *cListPic = pcTDecTop->getListPic();
773      pcSlice->setBaseColPic ( *cListPic, m_layerId );
774#endif
775#if SVC_UPSAMPLING
776      if ( pcPic->isSpatialEnhLayer())
777      {   
778        m_cPrediction.upsampleBasePic( pcPic->getFullPelBaseRec(), pcSlice->getBaseColPic()->getPicYuvRec(), pcPic->getPicYuvRec() );
779      }
780      else
781      {
782        pcPic->setFullPelBaseRec( pcSlice->getBaseColPic()->getPicYuvRec() );
783      }
784      pcSlice->setFullPelBaseRec ( pcPic->getFullPelBaseRec() );
785#endif
786    }
787#endif
788
789#if REF_IDX_FRAMEWORK
790#if !AVC_SYNTAX
791    // Set reference list
792    pcSlice->setRefPicList( m_cListPic );
793#endif
794    if(m_layerId > 0)
795    {
796      setILRPic(pcPic);
797#if REF_IDX_MFM
798      pcSlice->setRefPOCListILP(m_ppcTDecTop[m_layerId]->m_cIlpPic, pcSlice->getBaseColPic());
799#endif
800
801      pcSlice->addRefPicList ( m_cIlpPic, 
802                               1, 
803                               ((pcSlice->getNalUnitType() >= NAL_UNIT_CODED_SLICE_BLA) && 
804                                (pcSlice->getNalUnitType() <= NAL_UNIT_CODED_SLICE_CRA)) ? 0: -1);
805    }
806#endif
807
808    // For generalized B
809    // note: maybe not existed case (always L0 is copied to L1 if L1 is empty)
810    if (pcSlice->isInterB() && pcSlice->getNumRefIdx(REF_PIC_LIST_1) == 0)
811    {
812      Int iNumRefIdx = pcSlice->getNumRefIdx(REF_PIC_LIST_0);
813      pcSlice->setNumRefIdx        ( REF_PIC_LIST_1, iNumRefIdx );
814
815      for (Int iRefIdx = 0; iRefIdx < iNumRefIdx; iRefIdx++)
816      {
817        pcSlice->setRefPic(pcSlice->getRefPic(REF_PIC_LIST_0, iRefIdx), REF_PIC_LIST_1, iRefIdx);
818      }
819    }
820    if (pcSlice->isInterB())
821    {
822      Bool bLowDelay = true;
823      Int  iCurrPOC  = pcSlice->getPOC();
824      Int iRefIdx = 0;
825
826      for (iRefIdx = 0; iRefIdx < pcSlice->getNumRefIdx(REF_PIC_LIST_0) && bLowDelay; iRefIdx++)
827      {
828        if ( pcSlice->getRefPic(REF_PIC_LIST_0, iRefIdx)->getPOC() > iCurrPOC )
829        {
830          bLowDelay = false;
831        }
832      }
833      for (iRefIdx = 0; iRefIdx < pcSlice->getNumRefIdx(REF_PIC_LIST_1) && bLowDelay; iRefIdx++)
834      {
835        if ( pcSlice->getRefPic(REF_PIC_LIST_1, iRefIdx)->getPOC() > iCurrPOC )
836        {
837          bLowDelay = false;
838        }
839      }
840
841      pcSlice->setCheckLDC(bLowDelay);           
842    }
843
844    //---------------
845    pcSlice->setRefPOCList();
846    pcSlice->setNoBackPredFlag( false );
847    if ( pcSlice->getSliceType() == B_SLICE )
848    {
849      if ( pcSlice->getNumRefIdx(RefPicList( 0 ) ) == pcSlice->getNumRefIdx(RefPicList( 1 ) ) )
850      {
851        pcSlice->setNoBackPredFlag( true );
852        for ( i=0; i < pcSlice->getNumRefIdx(RefPicList( 1 ) ); i++ )
853        {
854          if ( pcSlice->getRefPOC(RefPicList(1), i) != pcSlice->getRefPOC(RefPicList(0), i) ) 
855          {
856            pcSlice->setNoBackPredFlag( false );
857            break;
858          }
859        }
860      }
861    }
862  }
863
864  pcPic->setCurrSliceIdx(m_uiSliceIdx);
865  if(pcSlice->getSPS()->getScalingListFlag())
866  {
867    pcSlice->setScalingList ( pcSlice->getSPS()->getScalingList()  );
868    if(pcSlice->getPPS()->getScalingListPresentFlag())
869    {
870      pcSlice->setScalingList ( pcSlice->getPPS()->getScalingList()  );
871    }
872#if TS_FLAT_QUANTIZATION_MATRIX
873    pcSlice->getScalingList()->setUseTransformSkip(pcSlice->getPPS()->getUseTransformSkip());
874#endif
875    if(!pcSlice->getPPS()->getScalingListPresentFlag() && !pcSlice->getSPS()->getScalingListPresentFlag())
876    {
877      pcSlice->setDefaultScalingList();
878    }
879    m_cTrQuant.setScalingListDec(pcSlice->getScalingList());
880    m_cTrQuant.setUseScalingList(true);
881  }
882  else
883  {
884    m_cTrQuant.setFlatScalingList();
885    m_cTrQuant.setUseScalingList(false);
886  }
887
888  //  Decode a picture
889  m_cGopDecoder.decompressSlice(nalu.m_Bitstream, pcPic);
890
891  m_bFirstSliceInPicture = false;
892  m_uiSliceIdx++;
893
894  return false;
895}
896
897Void TDecTop::xDecodeVPS()
898{
899  TComVPS* vps = new TComVPS();
900 
901  m_cEntropyDecoder.decodeVPS( vps );
902  m_parameterSetManagerDecoder.storePrefetchedVPS(vps); 
903}
904
905Void TDecTop::xDecodeSPS()
906{
907  TComSPS* sps = new TComSPS();
908#if SVC_EXTENSION
909  sps->setLayerId(m_layerId);
910#endif
911  m_cEntropyDecoder.decodeSPS( sps );
912  m_parameterSetManagerDecoder.storePrefetchedSPS(sps);
913#if REF_IDX_MFM
914  m_pcSPS = sps;
915  setMFMEnabledFlag(sps->getMFMEnabledFlag());
916#endif
917#if !REMOVE_ALF
918  m_cAdaptiveLoopFilter.create( sps->getPicWidthInLumaSamples(), sps->getPicHeightInLumaSamples(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth );
919#endif
920#if REF_IDX_FRAMEWORK
921  if(m_numLayer>0)
922  {
923    xInitILRP(sps);
924  }
925#endif
926}
927
928Void TDecTop::xDecodePPS()
929{
930  TComPPS* pps = new TComPPS();
931  m_cEntropyDecoder.decodePPS( pps, &m_parameterSetManagerDecoder );
932  m_parameterSetManagerDecoder.storePrefetchedPPS( pps );
933
934#if DEPENDENT_SLICES
935#if TILES_WPP_ENTROPYSLICES_FLAGS
936  if( pps->getDependentSliceEnabledFlag() && (!pps->getEntropySliceEnabledFlag()) )
937#else
938  if( pps->getDependentSliceEnabledFlag() && (!pps->getCabacIndependentFlag()) )
939#endif
940  {
941#if TILES_WPP_ENTROPYSLICES_FLAGS
942    int NumCtx = pps->getEntropyCodingSyncEnabledFlag()?2:1;
943#else
944    int NumCtx = (pps->getTilesOrEntropyCodingSyncIdc() == 2)?2:1;
945#endif
946    m_cSliceDecoder.initCtxMem(NumCtx);
947    for ( UInt st = 0; st < NumCtx; st++ )
948    {
949      TDecSbac* ctx = NULL;
950      ctx = new TDecSbac;
951      ctx->init( &m_cBinCABAC );
952      m_cSliceDecoder.setCtxMem( ctx, st );
953    }
954  }
955#endif
956}
957
958#if !REMOVE_APS
959Void TDecTop::xDecodeAPS()
960{
961  TComAPS  *aps = new TComAPS();
962  allocAPS (aps);
963  decodeAPS(aps);
964  m_parameterSetManagerDecoder.storePrefetchedAPS(aps);
965}
966#endif
967
968Void TDecTop::xDecodeSEI( TComInputBitstream* bs )
969{
970#if RECOVERY_POINT_SEI || BUFFERING_PERIOD_AND_TIMING_SEI
971  if ( m_SEIs == NULL )
972#endif
973  m_SEIs = new SEImessages;
974#if BUFFERING_PERIOD_AND_TIMING_SEI
975  m_SEIs->m_pSPS = m_parameterSetManagerDecoder.getSPS(0);
976#endif
977  m_seiReader.parseSEImessage( bs, *m_SEIs );
978}
979
980#if SVC_EXTENSION
981Bool TDecTop::decode(InputNALUnit& nalu, Int& iSkipFrame, Int& iPOCLastDisplay, UInt& curLayerId, Bool& bNewPOC)
982#else
983Bool TDecTop::decode(InputNALUnit& nalu, Int& iSkipFrame, Int& iPOCLastDisplay)
984#endif
985{
986  // Initialize entropy decoder
987  m_cEntropyDecoder.setEntropyDecoder (&m_cCavlcDecoder);
988  m_cEntropyDecoder.setBitstream      (nalu.m_Bitstream);
989
990  switch (nalu.m_nalUnitType)
991  {
992    case NAL_UNIT_VPS:
993      xDecodeVPS();
994      return false;
995     
996    case NAL_UNIT_SPS:
997      xDecodeSPS();
998#if AVC_BASE
999      {
1000        TComPic* pBLPic = (*m_ppcTDecTop[0]->getListPic()->begin());
1001        if( nalu.m_layerId == 1 && pBLPic->getPicYuvRec() == NULL )
1002        {
1003#if SVC_UPSAMPLING
1004#if AVC_SYNTAX
1005          TComSPS* sps = new TComSPS();
1006          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, sps, true);
1007#else
1008          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, NULL, true);
1009#endif
1010#else
1011          pBLPic->create( m_ppcTDecTop[0]->getBLWidth(), m_ppcTDecTop[0]->getBLHeight(), g_uiMaxCUWidth, g_uiMaxCUHeight, g_uiMaxCUDepth, true);
1012#endif
1013        }
1014      }
1015#endif
1016      return false;
1017
1018    case NAL_UNIT_PPS:
1019      xDecodePPS();
1020      return false;
1021#if !REMOVE_APS
1022    case NAL_UNIT_APS:
1023      xDecodeAPS();
1024      return false;
1025#endif
1026     
1027    case NAL_UNIT_SEI:
1028      xDecodeSEI( nalu.m_Bitstream );
1029      return false;
1030
1031#if NAL_UNIT_TYPES_J1003_D7
1032    case NAL_UNIT_CODED_SLICE_TRAIL_R:
1033    case NAL_UNIT_CODED_SLICE_TRAIL_N:
1034    case NAL_UNIT_CODED_SLICE_TLA:
1035    case NAL_UNIT_CODED_SLICE_TSA_N:
1036    case NAL_UNIT_CODED_SLICE_STSA_R:
1037    case NAL_UNIT_CODED_SLICE_STSA_N:
1038    case NAL_UNIT_CODED_SLICE_BLA:
1039    case NAL_UNIT_CODED_SLICE_BLANT:
1040    case NAL_UNIT_CODED_SLICE_BLA_N_LP:
1041    case NAL_UNIT_CODED_SLICE_IDR:
1042    case NAL_UNIT_CODED_SLICE_IDR_N_LP:
1043    case NAL_UNIT_CODED_SLICE_CRA:
1044    case NAL_UNIT_CODED_SLICE_DLP:
1045    case NAL_UNIT_CODED_SLICE_TFD:
1046#else
1047    case NAL_UNIT_CODED_SLICE:
1048    case NAL_UNIT_CODED_SLICE_TFD:
1049    case NAL_UNIT_CODED_SLICE_TLA:
1050    case NAL_UNIT_CODED_SLICE_CRA:
1051    case NAL_UNIT_CODED_SLICE_CRANT:
1052    case NAL_UNIT_CODED_SLICE_BLA:
1053    case NAL_UNIT_CODED_SLICE_BLANT:
1054    case NAL_UNIT_CODED_SLICE_IDR:
1055#endif
1056#if SVC_EXTENSION
1057      return xDecodeSlice(nalu, iSkipFrame, iPOCLastDisplay, curLayerId, bNewPOC);
1058#else
1059      return xDecodeSlice(nalu, iSkipFrame, iPOCLastDisplay);
1060#endif
1061      break;
1062    default:
1063      assert (1);
1064  }
1065
1066  return false;
1067}
1068
1069/** Function for checking if picture should be skipped because of association with a previous BLA picture
1070 * \param iPOCLastDisplay POC of last picture displayed
1071 * \returns true if the picture should be skipped
1072 * This function skips all TFD pictures that follow a BLA picture
1073 * in decoding order and precede it in output order.
1074 */
1075Bool TDecTop::isSkipPictureForBLA(Int& iPOCLastDisplay)
1076{
1077  if (m_prevRAPisBLA && m_apcSlicePilot->getPOC() < m_pocCRA && m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TFD)
1078  {
1079    iPOCLastDisplay++;
1080    return true;
1081  }
1082  return false;
1083}
1084
1085/** Function for checking if picture should be skipped because of random access
1086 * \param iSkipFrame skip frame counter
1087 * \param iPOCLastDisplay POC of last picture displayed
1088 * \returns true if the picture shold be skipped in the random access.
1089 * This function checks the skipping of pictures in the case of -s option random access.
1090 * All pictures prior to the random access point indicated by the counter iSkipFrame are skipped.
1091 * It also checks the type of Nal unit type at the random access point.
1092 * If the random access point is CRA/CRANT/BLA/BLANT, TFD pictures with POC less than the POC of the random access point are skipped.
1093 * If the random access point is IDR all pictures after the random access point are decoded.
1094 * If the random access point is none of the above, a warning is issues, and decoding of pictures with POC
1095 * equal to or greater than the random access point POC is attempted. For non IDR/CRA/BLA random
1096 * access point there is no guarantee that the decoder will not crash.
1097 */
1098Bool TDecTop::isRandomAccessSkipPicture(Int& iSkipFrame,  Int& iPOCLastDisplay)
1099{
1100  if (iSkipFrame) 
1101  {
1102    iSkipFrame--;   // decrement the counter
1103    return true;
1104  }
1105  else if (m_pocRandomAccess == MAX_INT) // start of random access point, m_pocRandomAccess has not been set yet.
1106  {
1107    if (   m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_CRA
1108#if !NAL_UNIT_TYPES_J1003_D7
1109        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_CRANT
1110#endif
1111        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA
1112#if SUPPORT_FOR_RAP_N_LP
1113        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLA_N_LP
1114#endif
1115        || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_BLANT )
1116    {
1117      // set the POC random access since we need to skip the reordered pictures in the case of CRA/CRANT/BLA/BLANT.
1118      m_pocRandomAccess = m_apcSlicePilot->getPOC();
1119    }
1120#if SUPPORT_FOR_RAP_N_LP
1121    else if ( m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR || m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR_N_LP )
1122#else
1123    else if (m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_IDR)
1124#endif
1125    {
1126      m_pocRandomAccess = 0; // no need to skip the reordered pictures in IDR, they are decodable.
1127    }
1128    else 
1129    {
1130      static bool warningMessage = false;
1131      if(!warningMessage)
1132      {
1133        printf("\nWarning: this is not a valid random access point and the data is discarded until the first CRA picture");
1134        warningMessage = true;
1135      }
1136      return true;
1137    }
1138  }
1139  // skip the reordered pictures, if necessary
1140  else if (m_apcSlicePilot->getPOC() < m_pocRandomAccess && m_apcSlicePilot->getNalUnitType() == NAL_UNIT_CODED_SLICE_TFD)
1141  {
1142    iPOCLastDisplay++;
1143    return true;
1144  }
1145  // if we reach here, then the picture is not skipped.
1146  return false; 
1147}
1148
1149#if !REMOVE_APS
1150Void TDecTop::allocAPS (TComAPS* pAPS)
1151{
1152  // we don't know the SPS before it has been activated. These fields could exist
1153  // depending on the corresponding flags in the APS, but SAO/ALF allocation functions will
1154  // have to be moved for that
1155  pAPS->createSaoParam();
1156  m_cSAO.allocSaoParam(pAPS->getSaoParam());
1157#if !REMOVE_ALF
1158  pAPS->createAlfParam();
1159#endif
1160}
1161#endif
1162
1163//! \}
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