forked from mirror/libbpg
118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
/* The copyright in this software is being made available under the BSD
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* License, included below. This software may be subject to other third party
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* and contributor rights, including patent rights, and no such rights are
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* granted under this license.
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*
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* Copyright (c) 2010-2014, ITU/ISO/IEC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#ifndef __NAL__
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#define __NAL__
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#include <vector>
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#include <sstream>
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#include "CommonDef.h"
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class TComOutputBitstream;
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/**
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* Represents a single NALunit header and the associated RBSPayload
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*/
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struct NALUnit
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{
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NalUnitType m_nalUnitType; ///< nal_unit_type
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UInt m_temporalId; ///< temporal_id
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UInt m_reservedZero6Bits; ///< reserved_zero_6bits
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/** construct an NALunit structure with given header values. */
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NALUnit(
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NalUnitType nalUnitType,
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Int temporalId = 0,
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Int reservedZero6Bits = 0)
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:m_nalUnitType (nalUnitType)
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,m_temporalId (temporalId)
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,m_reservedZero6Bits(reservedZero6Bits)
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{}
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/** default constructor - no initialization; must be perfomed by user */
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NALUnit() {}
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/** returns true if the NALunit is a slice NALunit */
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Bool isSlice()
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{
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return m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_R
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_TRAIL_N
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_R
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_TSA_N
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_R
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_STSA_N
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_LP
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_W_RADL
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_BLA_N_LP
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_N_LP
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_CRA
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_N
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_RADL_R
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_N
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|| m_nalUnitType == NAL_UNIT_CODED_SLICE_RASL_R;
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}
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Bool isSei()
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{
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return m_nalUnitType == NAL_UNIT_PREFIX_SEI
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|| m_nalUnitType == NAL_UNIT_SUFFIX_SEI;
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}
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Bool isVcl()
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{
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return ( (UInt)m_nalUnitType < 32 );
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}
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};
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struct OutputNALUnit;
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/**
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* A single NALunit, with complete payload in EBSP format.
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*/
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struct NALUnitEBSP : public NALUnit
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{
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std::ostringstream m_nalUnitData;
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/**
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* convert the OutputNALUnit #nalu# into EBSP format by writing out
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* the NALUnit header, then the rbsp_bytes including any
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* emulation_prevention_three_byte symbols.
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*/
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NALUnitEBSP(OutputNALUnit& nalu);
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};
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//! \}
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//! \}
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#endif
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