source: 3DVCSoftware/trunk/source/Lib/TLibCommon/NAL.h @ 608

Last change on this file since 608 was 608, checked in by tech, 11 years ago

Merged DEV-2.0-dev0@604.

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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#pragma once
35
36#include <vector>
37#include <sstream>
38#include "CommonDef.h"
39
40class TComOutputBitstream;
41
42/**
43 * Represents a single NALunit header and the associated RBSPayload
44 */
45struct NALUnit
46{
47  NalUnitType m_nalUnitType; ///< nal_unit_type
48  UInt        m_temporalId;  ///< temporal_id
49#if H_MV
50  Int         m_layerId;     ///< layer id
51#else
52  UInt        m_reservedZero6Bits; ///< reserved_zero_6bits
53#endif
54
55  /** construct an NALunit structure with given header values. */
56  NALUnit(
57    NalUnitType nalUnitType,
58    Int         temporalId = 0,
59#if H_MV
60    Int         layerId = 0)
61#else
62    Int         reservedZero6Bits = 0)
63#endif
64    :m_nalUnitType (nalUnitType)
65    ,m_temporalId  (temporalId)
66#if H_MV
67    ,m_layerId     (layerId)
68#else
69    ,m_reservedZero6Bits(reservedZero6Bits)
70#endif
71  {}
72
73  /** default constructor - no initialization; must be perfomed by user */
74  NALUnit() {}
75
76  /** returns true if the NALunit is a slice NALunit */
77  Bool isSlice()
78  {
79    return m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_R
80        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_N
81        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TLA_R
82        || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_N
83        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_R
84        || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_N
85        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
86        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
87        || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
88        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
89        || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
90        || m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA
91        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N
92        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R
93        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N
94        || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R;
95  }
96  Bool isSei()
97  {
98    return m_nalUnitType == NAL_UNIT_PREFIX_SEI
99        || m_nalUnitType == NAL_UNIT_SUFFIX_SEI;
100  }
101
102  Bool isVcl()
103  {
104    return ( (UInt)m_nalUnitType < 32 );
105  }
106};
107
108struct OutputNALUnit;
109
110/**
111 * A single NALunit, with complete payload in EBSP format.
112 */
113struct NALUnitEBSP : public NALUnit
114{
115  std::ostringstream m_nalUnitData;
116
117  /**
118   * convert the OutputNALUnit #nalu# into EBSP format by writing out
119   * the NALUnit header, then the rbsp_bytes including any
120   * emulation_prevention_three_byte symbols.
121   */
122  NALUnitEBSP(OutputNALUnit& nalu);
123};
124//! \}
125//! \}
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