text: //----------------------------------------------------------------------------
  //
  // TSDuck - The MPEG Transport Stream Toolkit
  // Copyright (c) 2005-2021, Thierry Lelegard
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice,
  //    this list of conditions and the following disclaimer.
  // 2. Redistributions in binary form must reproduce the above copyright
  //    notice, this list of conditions and the following disclaimer in the
  //    documentation and/or other materials provided with the distribution.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  // THE POSSIBILITY OF SUCH DAMAGE.
  //
  //----------------------------------------------------------------------------
  //!
  //!  @file
  //!  Base class for AVC access units, aka NALunits.
  //!
  //----------------------------------------------------------------------------
  
  #pragma once
  #include "tsAbstractVideoAccessUnit.h"
  #include "tsAVCParser.h"
  
  namespace ts {
      //!
      //! Base class for AVC access units, aka NALunits.
      //! @see ISO/IEC 14496-10, ITU-T Rec. H.264, section 7.3.1
      //! @ingroup mpeg
      //!
      class TSDUCKDLL AbstractAVCAccessUnit: public AbstractVideoAccessUnit
      {
      public:
          //!
          //! Unified name for superclass.
          //!
          typedef AbstractVideoAccessUnit SuperClass;
  
          //!
          //! Constructor.
          //!
          AbstractAVCAccessUnit();
  
          // Inherited.
          virtual void clear() override;
  
          uint8_t forbidden_zero_bit;  //!< See ISO/IEC 14496-10 section 7.3.1
          uint8_t nal_ref_idc;         //!< See ISO/IEC 14496-10 section 7.3.1
          uint8_t nal_unit_type;       //!< See ISO/IEC 14496-10 section 7.3.1
  
      protected:
          // Inherited.
          virtual bool parseHeader(const uint8_t*&, size_t&, std::initializer_list<uint32_t> = std::initializer_list<uint32_t>()) override;
      };
  }
  