source: 3DVCSoftware/trunk/source/Lib/TLibCommon/NAL.h

Last change on this file was 1413, checked in by tech, 6 years ago

Merged HTM-16.2-dev@1412

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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) 2010-2017, 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#pragma once
35
36#ifndef __NAL__
37#define __NAL__
38
39#include <sstream>
40#include "CommonDef.h"
41#if NH_MV
42#include <vector>
43#endif
44
45class TComOutputBitstream;
46
47/**
48 * Represents a single NALunit header and the associated RBSPayload
49 */
50struct NALUnit
51{
52  NalUnitType m_nalUnitType; ///< nal_unit_type
53  UInt        m_temporalId;  ///< temporal_id
54#if NH_MV
55  Int         m_nuhLayerId;     ///< layer id
56#else
57  UInt        m_nuhLayerId;  ///< nuh_layer_id
58#endif
59
60  NALUnit(const NALUnit &src)
61  :m_nalUnitType (src.m_nalUnitType)
62  ,m_temporalId  (src.m_temporalId)
63  ,m_nuhLayerId  (src.m_nuhLayerId)
64  { }
65  /** construct an NALunit structure with given header values. */
66  NALUnit(
67    NalUnitType nalUnitType,
68    Int         temporalId = 0,
69    Int         nuhLayerId = 0)
70    :m_nalUnitType (nalUnitType)
71    ,m_temporalId  (temporalId)
72    ,m_nuhLayerId  (nuhLayerId)
73  {}
74
75  /** default constructor - no initialization; must be performed by user */
76  NALUnit() {}
77
78  virtual ~NALUnit() { }
79
80  /** returns true if the NALunit is a slice NALunit */
81  Bool isSlice()
82  {
83    return m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_R
84        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_N
85        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_R
86        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_N
87        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_R
88        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_N
89        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
90        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
91        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
92        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
93        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
94        || m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA
95        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N
96        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R
97        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N
98        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R;
99  }
100#if NH_MV
101  Bool isIrap()
102  {
103   return  m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
104        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
105        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
106        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
107        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
108        || m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA;
109  }
110
111  Bool isIdr()
112  {
113    return  m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
114         || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP;
115  }
116
117  Bool isBla()
118  {
119    return  m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
120         || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
121         || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP;
122  }
123
124  Bool isCra()
125  {
126   return  m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA; 
127  }
128
129
130#endif
131  Bool isSei()
132  {
133    return m_nalUnitType == NAL_UNIT_PREFIX_SEI
134        || m_nalUnitType == NAL_UNIT_SUFFIX_SEI;
135  }
136
137  Bool isVcl()
138  {
139    return ( (UInt)m_nalUnitType < 32 );
140  }
141#if NH_MV
142  Void print( )
143  {
144    std::cout << "Type: " << NALU_TYPE_STR[m_nalUnitType] << " LayerId: " << m_nuhLayerId << " TemporalId: " << m_temporalId; 
145  }
146#endif
147};
148
149struct OutputNALUnit;
150
151/**
152 * A single NALunit, with complete payload in EBSP format.
153 */
154struct NALUnitEBSP : public NALUnit
155{
156  std::ostringstream m_nalUnitData;
157
158  /**
159   * convert the OutputNALUnit nalu into EBSP format by writing out
160   * the NALUnit header, then the rbsp_bytes including any
161   * emulation_prevention_three_byte symbols.
162   */
163  NALUnitEBSP(OutputNALUnit& nalu);
164};
165//! \}
166//! \}
167
168#endif
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