source: 3DVCSoftware/trunk/source/Lib/TLibDecoder/SEIread.cpp @ 622

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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) 2010-2013, 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/**
35 \file     SEIread.cpp
36 \brief    reading functionality for SEI messages
37 */
38
39#include "TLibCommon/CommonDef.h"
40#include "TLibCommon/TComBitStream.h"
41#include "TLibCommon/SEI.h"
42#include "TLibCommon/TComSlice.h"
43#include "SyntaxElementParser.h"
44#include "SEIread.h"
45
46//! \ingroup TLibDecoder
47//! \{
48
49#if ENC_DEC_TRACE
50Void  xTraceSEIHeader()
51{
52  fprintf( g_hTrace, "=========== SEI message ===========\n");
53}
54
55Void  xTraceSEIMessageType(SEI::PayloadType payloadType)
56{
57  switch (payloadType)
58  {
59  case SEI::DECODED_PICTURE_HASH:
60    fprintf( g_hTrace, "=========== Decoded picture hash SEI message ===========\n");
61    break;
62  case SEI::USER_DATA_UNREGISTERED:
63    fprintf( g_hTrace, "=========== User Data Unregistered SEI message ===========\n");
64    break;
65  case SEI::ACTIVE_PARAMETER_SETS:
66    fprintf( g_hTrace, "=========== Active Parameter sets SEI message ===========\n");
67    break;
68  case SEI::BUFFERING_PERIOD:
69    fprintf( g_hTrace, "=========== Buffering period SEI message ===========\n");
70    break;
71  case SEI::PICTURE_TIMING:
72    fprintf( g_hTrace, "=========== Picture timing SEI message ===========\n");
73    break;
74  case SEI::RECOVERY_POINT:
75    fprintf( g_hTrace, "=========== Recovery point SEI message ===========\n");
76    break;
77  case SEI::FRAME_PACKING:
78    fprintf( g_hTrace, "=========== Frame Packing Arrangement SEI message ===========\n");
79    break;
80  case SEI::DISPLAY_ORIENTATION:
81    fprintf( g_hTrace, "=========== Display Orientation SEI message ===========\n");
82    break;
83  case SEI::TEMPORAL_LEVEL0_INDEX:
84    fprintf( g_hTrace, "=========== Temporal Level Zero Index SEI message ===========\n");
85    break;
86  case SEI::REGION_REFRESH_INFO:
87    fprintf( g_hTrace, "=========== Gradual Decoding Refresh Information SEI message ===========\n");
88    break;
89  case SEI::DECODING_UNIT_INFO:
90    fprintf( g_hTrace, "=========== Decoding Unit Information SEI message ===========\n");
91    break;
92  case SEI::TONE_MAPPING_INFO:
93    fprintf( g_hTrace, "===========Tone Mapping Info SEI message ===========\n");
94    break;
95  case SEI::SOP_DESCRIPTION:
96    fprintf( g_hTrace, "=========== SOP Description SEI message ===========\n");
97    break;
98  case SEI::SCALABLE_NESTING:
99    fprintf( g_hTrace, "=========== Scalable Nesting SEI message ===========\n");
100    break;
101  default:
102    fprintf( g_hTrace, "=========== Unknown SEI message ===========\n");
103    break;
104  }
105}
106#endif
107
108/**
109 * unmarshal a single SEI message from bitstream bs
110 */
111void SEIReader::parseSEImessage(TComInputBitstream* bs, SEIMessages& seis, const NalUnitType nalUnitType, TComSPS *sps)
112{
113  setBitstream(bs);
114
115  assert(!m_pcBitstream->getNumBitsUntilByteAligned());
116  do
117  {
118    xReadSEImessage(seis, nalUnitType, sps);
119    /* SEI messages are an integer number of bytes, something has failed
120    * in the parsing if bitstream not byte-aligned */
121    assert(!m_pcBitstream->getNumBitsUntilByteAligned());
122  } while (m_pcBitstream->getNumBitsLeft() > 8);
123
124  UInt rbspTrailingBits;
125  READ_CODE(8, rbspTrailingBits, "rbsp_trailing_bits");
126  assert(rbspTrailingBits == 0x80);
127}
128
129Void SEIReader::xReadSEImessage(SEIMessages& seis, const NalUnitType nalUnitType, TComSPS *sps)
130{
131#if ENC_DEC_TRACE
132  xTraceSEIHeader();
133#endif
134  Int payloadType = 0;
135  UInt val = 0;
136
137  do
138  {
139    READ_CODE (8, val, "payload_type");
140    payloadType += val;
141  } while (val==0xFF);
142
143  UInt payloadSize = 0;
144  do
145  {
146    READ_CODE (8, val, "payload_size");
147    payloadSize += val;
148  } while (val==0xFF);
149
150#if ENC_DEC_TRACE
151  xTraceSEIMessageType((SEI::PayloadType)payloadType);
152#endif
153
154  /* extract the payload for this single SEI message.
155   * This allows greater safety in erroneous parsing of an SEI message
156   * from affecting subsequent messages.
157   * After parsing the payload, bs needs to be restored as the primary
158   * bitstream.
159   */
160  TComInputBitstream *bs = getBitstream();
161  setBitstream(bs->extractSubstream(payloadSize * 8));
162
163  SEI *sei = NULL;
164
165  if(nalUnitType == NAL_UNIT_PREFIX_SEI)
166  {
167    switch (payloadType)
168    {
169    case SEI::USER_DATA_UNREGISTERED:
170      sei = new SEIuserDataUnregistered;
171      xParseSEIuserDataUnregistered((SEIuserDataUnregistered&) *sei, payloadSize);
172      break;
173    case SEI::ACTIVE_PARAMETER_SETS:
174      sei = new SEIActiveParameterSets; 
175      xParseSEIActiveParameterSets((SEIActiveParameterSets&) *sei, payloadSize); 
176      break; 
177    case SEI::DECODING_UNIT_INFO:
178      if (!sps)
179      {
180        printf ("Warning: Found Decoding unit SEI message, but no active SPS is available. Ignoring.");
181      }
182      else
183      {
184        sei = new SEIDecodingUnitInfo; 
185        xParseSEIDecodingUnitInfo((SEIDecodingUnitInfo&) *sei, payloadSize, sps);
186      }
187      break; 
188    case SEI::BUFFERING_PERIOD:
189      if (!sps)
190      {
191        printf ("Warning: Found Buffering period SEI message, but no active SPS is available. Ignoring.");
192      }
193      else
194      {
195        sei = new SEIBufferingPeriod;
196        xParseSEIBufferingPeriod((SEIBufferingPeriod&) *sei, payloadSize, sps);
197      }
198      break;
199    case SEI::PICTURE_TIMING:
200      if (!sps)
201      {
202        printf ("Warning: Found Picture timing SEI message, but no active SPS is available. Ignoring.");
203      }
204      else
205      {
206        sei = new SEIPictureTiming;
207        xParseSEIPictureTiming((SEIPictureTiming&)*sei, payloadSize, sps);
208      }
209      break;
210    case SEI::RECOVERY_POINT:
211      sei = new SEIRecoveryPoint;
212      xParseSEIRecoveryPoint((SEIRecoveryPoint&) *sei, payloadSize);
213      break;
214    case SEI::FRAME_PACKING:
215      sei = new SEIFramePacking;
216      xParseSEIFramePacking((SEIFramePacking&) *sei, payloadSize);
217      break;
218    case SEI::DISPLAY_ORIENTATION:
219      sei = new SEIDisplayOrientation;
220      xParseSEIDisplayOrientation((SEIDisplayOrientation&) *sei, payloadSize);
221      break;
222    case SEI::TEMPORAL_LEVEL0_INDEX:
223      sei = new SEITemporalLevel0Index;
224      xParseSEITemporalLevel0Index((SEITemporalLevel0Index&) *sei, payloadSize);
225      break;
226    case SEI::REGION_REFRESH_INFO:
227      sei = new SEIGradualDecodingRefreshInfo;
228      xParseSEIGradualDecodingRefreshInfo((SEIGradualDecodingRefreshInfo&) *sei, payloadSize);
229      break;
230    case SEI::TONE_MAPPING_INFO:
231      sei = new SEIToneMappingInfo;
232      xParseSEIToneMappingInfo((SEIToneMappingInfo&) *sei, payloadSize);
233      break;
234    case SEI::SOP_DESCRIPTION:
235      sei = new SEISOPDescription;
236      xParseSEISOPDescription((SEISOPDescription&) *sei, payloadSize);
237      break;
238    case SEI::SCALABLE_NESTING:
239      sei = new SEIScalableNesting;
240      xParseSEIScalableNesting((SEIScalableNesting&) *sei, nalUnitType, payloadSize, sps);
241      break;
242    default:
243      for (UInt i = 0; i < payloadSize; i++)
244      {
245        UInt seiByte;
246        READ_CODE (8, seiByte, "unknown prefix SEI payload byte");
247      }
248      printf ("Unknown prefix SEI message (payloadType = %d) was found!\n", payloadType);
249    }
250  }
251  else
252  {
253    switch (payloadType)
254    {
255      case SEI::USER_DATA_UNREGISTERED:
256        sei = new SEIuserDataUnregistered;
257        xParseSEIuserDataUnregistered((SEIuserDataUnregistered&) *sei, payloadSize);
258        break;
259      case SEI::DECODED_PICTURE_HASH:
260        sei = new SEIDecodedPictureHash;
261        xParseSEIDecodedPictureHash((SEIDecodedPictureHash&) *sei, payloadSize);
262        break;
263      default:
264        for (UInt i = 0; i < payloadSize; i++)
265        {
266          UInt seiByte;
267          READ_CODE (8, seiByte, "unknown suffix SEI payload byte");
268        }
269        printf ("Unknown suffix SEI message (payloadType = %d) was found!\n", payloadType);
270    }
271  }
272  if (sei != NULL)
273  {
274    seis.push_back(sei);
275  }
276
277  /* By definition the underlying bitstream terminates in a byte-aligned manner.
278   * 1. Extract all bar the last MIN(bitsremaining,nine) bits as reserved_payload_extension_data
279   * 2. Examine the final 8 bits to determine the payload_bit_equal_to_one marker
280   * 3. Extract the remainingreserved_payload_extension_data bits.
281   *
282   * If there are fewer than 9 bits available, extract them.
283   */
284  Int payloadBitsRemaining = getBitstream()->getNumBitsLeft();
285  if (payloadBitsRemaining) /* more_data_in_payload() */
286  {
287    for (; payloadBitsRemaining > 9; payloadBitsRemaining--)
288    {
289      UInt reservedPayloadExtensionData;
290      READ_CODE (1, reservedPayloadExtensionData, "reserved_payload_extension_data");
291    }
292
293    /* 2 */
294    Int finalBits = getBitstream()->peekBits(payloadBitsRemaining);
295    Int finalPayloadBits = 0;
296    for (Int mask = 0xff; finalBits & (mask >> finalPayloadBits); finalPayloadBits++)
297    {
298      continue;
299    }
300
301    /* 3 */
302    for (; payloadBitsRemaining > 9 - finalPayloadBits; payloadBitsRemaining--)
303    {
304      UInt reservedPayloadExtensionData;
305      READ_FLAG (reservedPayloadExtensionData, "reserved_payload_extension_data");
306    }
307
308    UInt dummy;
309    READ_FLAG (dummy, "payload_bit_equal_to_one"); payloadBitsRemaining--;
310    while (payloadBitsRemaining)
311    {
312      READ_FLAG (dummy, "payload_bit_equal_to_zero"); payloadBitsRemaining--;
313    }
314  }
315
316  /* restore primary bitstream for sei_message */
317  delete getBitstream();
318  setBitstream(bs);
319}
320
321/**
322 * parse bitstream bs and unpack a user_data_unregistered SEI message
323 * of payloasSize bytes into sei.
324 */
325Void SEIReader::xParseSEIuserDataUnregistered(SEIuserDataUnregistered &sei, UInt payloadSize)
326{
327  assert(payloadSize >= 16);
328  UInt val;
329
330  for (UInt i = 0; i < 16; i++)
331  {
332    READ_CODE (8, val, "uuid_iso_iec_11578");
333    sei.uuid_iso_iec_11578[i] = val;
334  }
335
336  sei.userDataLength = payloadSize - 16;
337  if (!sei.userDataLength)
338  {
339    sei.userData = 0;
340    return;
341  }
342
343  sei.userData = new UChar[sei.userDataLength];
344  for (UInt i = 0; i < sei.userDataLength; i++)
345  {
346    READ_CODE (8, val, "user_data" );
347    sei.userData[i] = val;
348  }
349}
350
351/**
352 * parse bitstream bs and unpack a decoded picture hash SEI message
353 * of payloadSize bytes into sei.
354 */
355Void SEIReader::xParseSEIDecodedPictureHash(SEIDecodedPictureHash& sei, UInt /*payloadSize*/)
356{
357  UInt val;
358  READ_CODE (8, val, "hash_type");
359  sei.method = static_cast<SEIDecodedPictureHash::Method>(val);
360  for(Int yuvIdx = 0; yuvIdx < 3; yuvIdx++)
361  {
362    if(SEIDecodedPictureHash::MD5 == sei.method)
363    {
364      for (UInt i = 0; i < 16; i++)
365      {
366        READ_CODE(8, val, "picture_md5");
367        sei.digest[yuvIdx][i] = val;
368      }
369    }
370    else if(SEIDecodedPictureHash::CRC == sei.method)
371    {
372      READ_CODE(16, val, "picture_crc");
373      sei.digest[yuvIdx][0] = val >> 8 & 0xFF;
374      sei.digest[yuvIdx][1] = val & 0xFF;
375    }
376    else if(SEIDecodedPictureHash::CHECKSUM == sei.method)
377    {
378      READ_CODE(32, val, "picture_checksum");
379      sei.digest[yuvIdx][0] = (val>>24) & 0xff;
380      sei.digest[yuvIdx][1] = (val>>16) & 0xff;
381      sei.digest[yuvIdx][2] = (val>>8)  & 0xff;
382      sei.digest[yuvIdx][3] =  val      & 0xff;
383    }
384  }
385}
386Void SEIReader::xParseSEIActiveParameterSets(SEIActiveParameterSets& sei, UInt /*payloadSize*/)
387{
388  UInt val; 
389  READ_CODE(4, val, "active_vps_id");      sei.activeVPSId = val; 
390  READ_FLAG( val, "full_random_access_flag");  sei.m_fullRandomAccessFlag = val ? true : false;
391  READ_FLAG( val, "no_param_set_update_flag"); sei.m_noParamSetUpdateFlag = val ? true : false;
392  READ_UVLC(   val, "num_sps_ids_minus1"); sei.numSpsIdsMinus1 = val;
393
394  sei.activeSeqParamSetId.resize(sei.numSpsIdsMinus1 + 1);
395  for (Int i=0; i < (sei.numSpsIdsMinus1 + 1); i++)
396  {
397    READ_UVLC(val, "active_seq_param_set_id");  sei.activeSeqParamSetId[i] = val; 
398  }
399
400  UInt uibits = m_pcBitstream->getNumBitsUntilByteAligned(); 
401 
402  while(uibits--)
403  {
404    READ_FLAG(val, "alignment_bit");
405  }
406}
407
408Void SEIReader::xParseSEIDecodingUnitInfo(SEIDecodingUnitInfo& sei, UInt /*payloadSize*/, TComSPS *sps)
409{
410  UInt val;
411  READ_UVLC(val, "decoding_unit_idx");
412  sei.m_decodingUnitIdx = val;
413
414  TComVUI *vui = sps->getVuiParameters();
415  if(vui->getHrdParameters()->getSubPicCpbParamsInPicTimingSEIFlag())
416  {
417    READ_CODE( ( vui->getHrdParameters()->getDuCpbRemovalDelayLengthMinus1() + 1 ), val, "du_spt_cpb_removal_delay");
418    sei.m_duSptCpbRemovalDelay = val;
419  }
420  else
421  {
422    sei.m_duSptCpbRemovalDelay = 0;
423  }
424  READ_FLAG( val, "dpb_output_du_delay_present_flag"); sei.m_dpbOutputDuDelayPresentFlag = val ? true : false;
425  if(sei.m_dpbOutputDuDelayPresentFlag)
426  {
427    READ_CODE(vui->getHrdParameters()->getDpbOutputDelayDuLengthMinus1() + 1, val, "pic_spt_dpb_output_du_delay"); 
428    sei.m_picSptDpbOutputDuDelay = val;
429  }
430  xParseByteAlign();
431}
432
433Void SEIReader::xParseSEIBufferingPeriod(SEIBufferingPeriod& sei, UInt /*payloadSize*/, TComSPS *sps)
434{
435  Int i, nalOrVcl;
436  UInt code;
437
438  TComVUI *pVUI = sps->getVuiParameters();
439  TComHRD *pHRD = pVUI->getHrdParameters();
440
441  READ_UVLC( code, "bp_seq_parameter_set_id" );                         sei.m_bpSeqParameterSetId     = code;
442  if( !pHRD->getSubPicCpbParamsPresentFlag() )
443  {
444    READ_FLAG( code, "rap_cpb_params_present_flag" );                   sei.m_rapCpbParamsPresentFlag = code;
445  }
446  //read splicing flag and cpb_removal_delay_delta
447  READ_FLAG( code, "concatenation_flag"); 
448  sei.m_concatenationFlag = code;
449  READ_CODE( ( pHRD->getCpbRemovalDelayLengthMinus1() + 1 ), code, "au_cpb_removal_delay_delta_minus1" );
450  sei.m_auCpbRemovalDelayDelta = code + 1;
451  if( sei.m_rapCpbParamsPresentFlag )
452  {
453    READ_CODE( pHRD->getCpbRemovalDelayLengthMinus1() + 1, code, "cpb_delay_offset" );      sei.m_cpbDelayOffset = code;
454    READ_CODE( pHRD->getDpbOutputDelayLengthMinus1()  + 1, code, "dpb_delay_offset" );      sei.m_dpbDelayOffset = code;
455  }
456  for( nalOrVcl = 0; nalOrVcl < 2; nalOrVcl ++ )
457  {
458    if( ( ( nalOrVcl == 0 ) && ( pHRD->getNalHrdParametersPresentFlag() ) ) ||
459        ( ( nalOrVcl == 1 ) && ( pHRD->getVclHrdParametersPresentFlag() ) ) )
460    {
461      for( i = 0; i < ( pHRD->getCpbCntMinus1( 0 ) + 1 ); i ++ )
462      {
463        READ_CODE( ( pHRD->getInitialCpbRemovalDelayLengthMinus1() + 1 ) , code, "initial_cpb_removal_delay" );
464        sei.m_initialCpbRemovalDelay[i][nalOrVcl] = code;
465        READ_CODE( ( pHRD->getInitialCpbRemovalDelayLengthMinus1() + 1 ) , code, "initial_cpb_removal_delay_offset" );
466        sei.m_initialCpbRemovalDelayOffset[i][nalOrVcl] = code;
467        if( pHRD->getSubPicCpbParamsPresentFlag() || sei.m_rapCpbParamsPresentFlag )
468        {
469          READ_CODE( ( pHRD->getInitialCpbRemovalDelayLengthMinus1() + 1 ) , code, "initial_alt_cpb_removal_delay" );
470          sei.m_initialAltCpbRemovalDelay[i][nalOrVcl] = code;
471          READ_CODE( ( pHRD->getInitialCpbRemovalDelayLengthMinus1() + 1 ) , code, "initial_alt_cpb_removal_delay_offset" );
472          sei.m_initialAltCpbRemovalDelayOffset[i][nalOrVcl] = code;
473        }
474      }
475    }
476  }
477  xParseByteAlign();
478}
479Void SEIReader::xParseSEIPictureTiming(SEIPictureTiming& sei, UInt /*payloadSize*/, TComSPS *sps)
480{
481  Int i;
482  UInt code;
483
484  TComVUI *vui = sps->getVuiParameters();
485  TComHRD *hrd = vui->getHrdParameters();
486
487  if( vui->getFrameFieldInfoPresentFlag() )
488  {
489    READ_CODE( 4, code, "pic_struct" );             sei.m_picStruct            = code;
490    READ_CODE( 2, code, "source_scan_type" );       sei.m_sourceScanType = code;
491    READ_FLAG(    code, "duplicate_flag" );         sei.m_duplicateFlag        = ( code == 1 ? true : false );
492  }
493
494  if( hrd->getCpbDpbDelaysPresentFlag())
495  {
496    READ_CODE( ( hrd->getCpbRemovalDelayLengthMinus1() + 1 ), code, "au_cpb_removal_delay_minus1" );
497    sei.m_auCpbRemovalDelay = code + 1;
498    READ_CODE( ( hrd->getDpbOutputDelayLengthMinus1() + 1 ), code, "pic_dpb_output_delay" );
499    sei.m_picDpbOutputDelay = code;
500
501    if(hrd->getSubPicCpbParamsPresentFlag())
502    {
503      READ_CODE(hrd->getDpbOutputDelayDuLengthMinus1()+1, code, "pic_dpb_output_du_delay" );
504      sei.m_picDpbOutputDuDelay = code;
505    }
506    if( hrd->getSubPicCpbParamsPresentFlag() && hrd->getSubPicCpbParamsInPicTimingSEIFlag() )
507    {
508      READ_UVLC( code, "num_decoding_units_minus1");
509      sei.m_numDecodingUnitsMinus1 = code;
510      READ_FLAG( code, "du_common_cpb_removal_delay_flag" );
511      sei.m_duCommonCpbRemovalDelayFlag = code;
512      if( sei.m_duCommonCpbRemovalDelayFlag )
513      {
514        READ_CODE( ( hrd->getDuCpbRemovalDelayLengthMinus1() + 1 ), code, "du_common_cpb_removal_delay_minus1" );
515        sei.m_duCommonCpbRemovalDelayMinus1 = code;
516      }
517      if( sei.m_numNalusInDuMinus1 != NULL )
518      {
519        delete sei.m_numNalusInDuMinus1;
520      }
521      sei.m_numNalusInDuMinus1 = new UInt[ ( sei.m_numDecodingUnitsMinus1 + 1 ) ];
522      if( sei.m_duCpbRemovalDelayMinus1  != NULL )
523      {
524        delete sei.m_duCpbRemovalDelayMinus1;
525      }
526      sei.m_duCpbRemovalDelayMinus1  = new UInt[ ( sei.m_numDecodingUnitsMinus1 + 1 ) ];
527
528      for( i = 0; i <= sei.m_numDecodingUnitsMinus1; i ++ )
529      {
530        READ_UVLC( code, "num_nalus_in_du_minus1");
531        sei.m_numNalusInDuMinus1[ i ] = code;
532        if( ( !sei.m_duCommonCpbRemovalDelayFlag ) && ( i < sei.m_numDecodingUnitsMinus1 ) )
533        {
534          READ_CODE( ( hrd->getDuCpbRemovalDelayLengthMinus1() + 1 ), code, "du_cpb_removal_delay_minus1" );
535          sei.m_duCpbRemovalDelayMinus1[ i ] = code;
536        }
537      }
538    }
539  }
540  xParseByteAlign();
541}
542Void SEIReader::xParseSEIRecoveryPoint(SEIRecoveryPoint& sei, UInt /*payloadSize*/)
543{
544  Int  iCode;
545  UInt uiCode;
546  READ_SVLC( iCode,  "recovery_poc_cnt" );      sei.m_recoveryPocCnt     = iCode;
547  READ_FLAG( uiCode, "exact_matching_flag" );   sei.m_exactMatchingFlag  = uiCode;
548  READ_FLAG( uiCode, "broken_link_flag" );      sei.m_brokenLinkFlag     = uiCode;
549  xParseByteAlign();
550}
551Void SEIReader::xParseSEIFramePacking(SEIFramePacking& sei, UInt /*payloadSize*/)
552{
553  UInt val;
554  READ_UVLC( val, "frame_packing_arrangement_id" );                 sei.m_arrangementId = val;
555  READ_FLAG( val, "frame_packing_arrangement_cancel_flag" );        sei.m_arrangementCancelFlag = val;
556
557  if ( !sei.m_arrangementCancelFlag )
558  {
559    READ_CODE( 7, val, "frame_packing_arrangement_type" );          sei.m_arrangementType = val;
560    assert((sei.m_arrangementType > 2) && (sei.m_arrangementType < 6) );
561    READ_FLAG( val, "quincunx_sampling_flag" );                     sei.m_quincunxSamplingFlag = val;
562
563    READ_CODE( 6, val, "content_interpretation_type" );             sei.m_contentInterpretationType = val;
564    READ_FLAG( val, "spatial_flipping_flag" );                      sei.m_spatialFlippingFlag = val;
565    READ_FLAG( val, "frame0_flipped_flag" );                        sei.m_frame0FlippedFlag = val;
566    READ_FLAG( val, "field_views_flag" );                           sei.m_fieldViewsFlag = val;
567    READ_FLAG( val, "current_frame_is_frame0_flag" );               sei.m_currentFrameIsFrame0Flag = val;
568    READ_FLAG( val, "frame0_self_contained_flag" );                 sei.m_frame0SelfContainedFlag = val;
569    READ_FLAG( val, "frame1_self_contained_flag" );                 sei.m_frame1SelfContainedFlag = val;
570
571    if ( sei.m_quincunxSamplingFlag == 0 && sei.m_arrangementType != 5)
572    {
573      READ_CODE( 4, val, "frame0_grid_position_x" );                sei.m_frame0GridPositionX = val;
574      READ_CODE( 4, val, "frame0_grid_position_y" );                sei.m_frame0GridPositionY = val;
575      READ_CODE( 4, val, "frame1_grid_position_x" );                sei.m_frame1GridPositionX = val;
576      READ_CODE( 4, val, "frame1_grid_position_y" );                sei.m_frame1GridPositionY = val;
577    }
578
579    READ_CODE( 8, val, "frame_packing_arrangement_reserved_byte" );   sei.m_arrangementReservedByte = val;
580    READ_FLAG( val,  "frame_packing_arrangement_persistence_flag" );  sei.m_arrangementPersistenceFlag = val ? true : false;
581  }
582  READ_FLAG( val, "upsampled_aspect_ratio" );                       sei.m_upsampledAspectRatio = val;
583
584  xParseByteAlign();
585}
586
587Void SEIReader::xParseSEIDisplayOrientation(SEIDisplayOrientation& sei, UInt /*payloadSize*/)
588{
589  UInt val;
590  READ_FLAG( val,       "display_orientation_cancel_flag" );       sei.cancelFlag            = val;
591  if( !sei.cancelFlag ) 
592  {
593    READ_FLAG( val,     "hor_flip" );                              sei.horFlip               = val;
594    READ_FLAG( val,     "ver_flip" );                              sei.verFlip               = val;
595    READ_CODE( 16, val, "anticlockwise_rotation" );                sei.anticlockwiseRotation = val;
596    READ_FLAG( val,     "display_orientation_persistence_flag" );  sei.persistenceFlag       = val;
597  }
598  xParseByteAlign();
599}
600
601Void SEIReader::xParseSEITemporalLevel0Index(SEITemporalLevel0Index& sei, UInt /*payloadSize*/)
602{
603  UInt val;
604  READ_CODE ( 8, val, "tl0_idx" );  sei.tl0Idx = val;
605  READ_CODE ( 8, val, "rap_idx" );  sei.rapIdx = val;
606  xParseByteAlign();
607}
608
609Void SEIReader::xParseSEIGradualDecodingRefreshInfo(SEIGradualDecodingRefreshInfo& sei, UInt /*payloadSize*/)
610{
611  UInt val;
612  READ_FLAG( val, "gdr_foreground_flag" ); sei.m_gdrForegroundFlag = val ? 1 : 0;
613  xParseByteAlign();
614}
615
616Void SEIReader::xParseSEIToneMappingInfo(SEIToneMappingInfo& sei, UInt /*payloadSize*/)
617{
618  Int i;
619  UInt val;
620  READ_UVLC( val, "tone_map_id" );                         sei.m_toneMapId = val;
621  READ_FLAG( val, "tone_map_cancel_flag" );                sei.m_toneMapCancelFlag = val;
622
623  if ( !sei.m_toneMapCancelFlag )
624  {
625    READ_FLAG( val, "tone_map_persistence_flag" );         sei.m_toneMapPersistenceFlag = val; 
626    READ_CODE( 8, val, "coded_data_bit_depth" );           sei.m_codedDataBitDepth = val;
627    READ_CODE( 8, val, "target_bit_depth" );               sei.m_targetBitDepth = val;
628    READ_UVLC( val, "model_id" );                          sei.m_modelId = val; 
629    switch(sei.m_modelId)
630    {
631    case 0:
632      {
633        READ_CODE( 32, val, "min_value" );                 sei.m_minValue = val;
634        READ_CODE( 32, val, "max_value" );                 sei.m_maxValue = val;
635        break;
636      }
637    case 1:
638      {
639        READ_CODE( 32, val, "sigmoid_midpoint" );          sei.m_sigmoidMidpoint = val;
640        READ_CODE( 32, val, "sigmoid_width" );             sei.m_sigmoidWidth = val;
641        break;
642      }
643    case 2:
644      {
645        UInt num = 1u << sei.m_targetBitDepth;
646        sei.m_startOfCodedInterval.resize(num+1);
647        for(i = 0; i < num; i++)
648        {
649          READ_CODE( ((( sei.m_codedDataBitDepth + 7 ) >> 3 ) << 3), val, "start_of_coded_interval" );
650          sei.m_startOfCodedInterval[i] = val;
651        }
652        sei.m_startOfCodedInterval[num] = 1u << sei.m_codedDataBitDepth;
653        break;
654      }
655    case 3:
656      {
657        READ_CODE( 16, val,  "num_pivots" );                       sei.m_numPivots = val;
658        sei.m_codedPivotValue.resize(sei.m_numPivots);
659        sei.m_targetPivotValue.resize(sei.m_numPivots);
660        for(i = 0; i < sei.m_numPivots; i++ )
661        {
662          READ_CODE( ((( sei.m_codedDataBitDepth + 7 ) >> 3 ) << 3), val, "coded_pivot_value" );
663          sei.m_codedPivotValue[i] = val;
664          READ_CODE( ((( sei.m_targetBitDepth + 7 ) >> 3 ) << 3),    val, "target_pivot_value" );
665          sei.m_targetPivotValue[i] = val;
666        }
667        break;
668      }
669    case 4:
670      {
671        READ_CODE( 8, val, "camera_iso_speed_idc" );                     sei.m_cameraIsoSpeedValue = val;
672        if( sei.m_cameraIsoSpeedValue == 255) //Extended_ISO
673        {
674          READ_CODE( 32,   val,   "camera_iso_speed_value" );            sei.m_cameraIsoSpeedValue = val;
675        }
676        READ_FLAG( val, "exposure_compensation_value_sign_flag" );       sei.m_exposureCompensationValueSignFlag = val;
677        READ_CODE( 16, val, "exposure_compensation_value_numerator" );   sei.m_exposureCompensationValueNumerator = val;
678        READ_CODE( 16, val, "exposure_compensation_value_denom_idc" );   sei.m_exposureCompensationValueDenomIdc = val;
679        READ_CODE( 32, val, "ref_screen_luminance_white" );              sei.m_refScreenLuminanceWhite = val;
680        READ_CODE( 32, val, "extended_range_white_level" );              sei.m_extendedRangeWhiteLevel = val;
681        READ_CODE( 16, val, "nominal_black_level_luma_code_value" );     sei.m_nominalBlackLevelLumaCodeValue = val;
682        READ_CODE( 16, val, "nominal_white_level_luma_code_value" );     sei.m_nominalWhiteLevelLumaCodeValue= val;
683        READ_CODE( 16, val, "extended_white_level_luma_code_value" );    sei.m_extendedWhiteLevelLumaCodeValue = val;
684        break;
685      }
686    default:
687      {
688        assert(!"Undefined SEIToneMapModelId");
689        break;
690      }
691    }//switch model id
692  }// if(!sei.m_toneMapCancelFlag)
693
694  xParseByteAlign();
695}
696
697Void SEIReader::xParseSEISOPDescription(SEISOPDescription &sei, UInt payloadSize)
698{
699  Int iCode;
700  UInt uiCode;
701
702  READ_UVLC( uiCode,           "sop_seq_parameter_set_id"            ); sei.m_sopSeqParameterSetId = uiCode;
703  READ_UVLC( uiCode,           "num_pics_in_sop_minus1"              ); sei.m_numPicsInSopMinus1 = uiCode;
704  for (UInt i = 0; i <= sei.m_numPicsInSopMinus1; i++)
705  {
706    READ_CODE( 6, uiCode,                     "sop_desc_vcl_nalu_type" );  sei.m_sopDescVclNaluType[i] = uiCode;
707    READ_CODE( 3, sei.m_sopDescTemporalId[i], "sop_desc_temporal_id"   );  sei.m_sopDescTemporalId[i] = uiCode;
708    if (sei.m_sopDescVclNaluType[i] != NAL_UNIT_CODED_SLICE_IDR_W_RADL && sei.m_sopDescVclNaluType[i] != NAL_UNIT_CODED_SLICE_IDR_N_LP)
709    {
710      READ_UVLC( sei.m_sopDescStRpsIdx[i],    "sop_desc_st_rps_idx"    ); sei.m_sopDescStRpsIdx[i] = uiCode;
711    }
712    if (i > 0)
713    {
714      READ_SVLC( iCode,                       "sop_desc_poc_delta"     ); sei.m_sopDescPocDelta[i] = iCode;
715    }
716  }
717
718  xParseByteAlign();
719}
720
721Void SEIReader::xParseSEIScalableNesting(SEIScalableNesting& sei, const NalUnitType nalUnitType, UInt payloadSize, TComSPS *sps)
722{
723  UInt uiCode;
724  SEIMessages seis;
725
726  READ_FLAG( uiCode,            "bitstream_subset_flag"         ); sei.m_bitStreamSubsetFlag = uiCode;
727  READ_FLAG( uiCode,            "nesting_op_flag"               ); sei.m_nestingOpFlag = uiCode;
728  if (sei.m_nestingOpFlag)
729  {
730    READ_FLAG( uiCode,            "default_op_flag"               ); sei.m_defaultOpFlag = uiCode;
731    READ_UVLC( uiCode,            "nesting_num_ops_minus1"        ); sei.m_nestingNumOpsMinus1 = uiCode;
732    for (UInt i = sei.m_defaultOpFlag; i <= sei.m_nestingNumOpsMinus1; i++)
733    {
734      READ_CODE( 3,        uiCode,  "nesting_max_temporal_id_plus1"   ); sei.m_nestingMaxTemporalIdPlus1[i] = uiCode;
735      READ_UVLC( uiCode,            "nesting_op_idx"                  ); sei.m_nestingOpIdx[i] = uiCode;
736    }
737  }
738  else
739  {
740    READ_FLAG( uiCode,            "all_layers_flag"               ); sei.m_allLayersFlag       = uiCode;
741    if (!sei.m_allLayersFlag)
742    {
743      READ_CODE( 3,        uiCode,  "nesting_no_op_max_temporal_id_plus1"  ); sei.m_nestingNoOpMaxTemporalIdPlus1 = uiCode;
744      READ_UVLC( uiCode,            "nesting_num_layers_minus1"            ); sei.m_nestingNumLayersMinus1        = uiCode;
745      for (UInt i = 0; i <= sei.m_nestingNumLayersMinus1; i++)
746      {
747        READ_CODE( 6,           uiCode,     "nesting_layer_id"      ); sei.m_nestingLayerId[i]   = uiCode;
748      }
749    }
750  }
751
752  // byte alignment
753  while ( m_pcBitstream->getNumBitsRead() % 8 != 0 )
754  {
755    UInt code;
756    READ_FLAG( code, "nesting_zero_bit" );
757  }
758
759  sei.m_callerOwnsSEIs = false;
760
761  // read nested SEI messages
762  do {
763    xReadSEImessage(sei.m_nestedSEIs, nalUnitType, sps);
764  } while (m_pcBitstream->getNumBitsLeft() > 8);
765
766}
767
768Void SEIReader::xParseByteAlign()
769{
770  UInt code;
771  if( m_pcBitstream->getNumBitsRead() % 8 != 0 )
772  {
773    READ_FLAG( code, "bit_equal_to_one" );          assert( code == 1 );
774  }
775  while( m_pcBitstream->getNumBitsRead() % 8 != 0 )
776  {
777    READ_FLAG( code, "bit_equal_to_zero" );         assert( code == 0 );
778  }
779}
780//! \}
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