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comparison jctvc/TLibCommon/NAL.h @ 0:772086c29cc7

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Initial import.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 16 Nov 2016 11:16:33 +0200
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-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 #pragma once
35
36 #ifndef __NAL__
37 #define __NAL__
38
39 #include <vector>
40 #include <sstream>
41 #include "CommonDef.h"
42
43 class TComOutputBitstream;
44
45 /**
46 * Represents a single NALunit header and the associated RBSPayload
47 */
48 struct NALUnit
49 {
50 NalUnitType m_nalUnitType; ///< nal_unit_type
51 UInt m_temporalId; ///< temporal_id
52 UInt m_reservedZero6Bits; ///< reserved_zero_6bits
53
54 /** construct an NALunit structure with given header values. */
55 NALUnit(
56 NalUnitType nalUnitType,
57 Int temporalId = 0,
58 Int reservedZero6Bits = 0)
59 :m_nalUnitType (nalUnitType)
60 ,m_temporalId (temporalId)
61 ,m_reservedZero6Bits(reservedZero6Bits)
62 {}
63
64 /** default constructor - no initialization; must be perfomed by user */
65 NALUnit() {}
66
67 /** returns true if the NALunit is a slice NALunit */
68 Bool isSlice()
69 {
70 return m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_R
71 || m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_N
72 || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_R
73 || m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_N
74 || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_R
75 || m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_N
76 || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
77 || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
78 || m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
79 || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
80 || m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
81 || m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA
82 || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N
83 || m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R
84 || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N
85 || m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R;
86 }
87 Bool isSei()
88 {
89 return m_nalUnitType == NAL_UNIT_PREFIX_SEI
90 || m_nalUnitType == NAL_UNIT_SUFFIX_SEI;
91 }
92
93 Bool isVcl()
94 {
95 return ( (UInt)m_nalUnitType < 32 );
96 }
97 };
98
99 struct OutputNALUnit;
100
101 /**
102 * A single NALunit, with complete payload in EBSP format.
103 */
104 struct NALUnitEBSP : public NALUnit
105 {
106 std::ostringstream m_nalUnitData;
107
108 /**
109 * convert the OutputNALUnit #nalu# into EBSP format by writing out
110 * the NALUnit header, then the rbsp_bytes including any
111 * emulation_prevention_three_byte symbols.
112 */
113 NALUnitEBSP(OutputNALUnit& nalu);
114 };
115 //! \}
116 //! \}
117
118 #endif