mirror of
https://github.com/axiomatic-systems/Bento4.git
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115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
/*****************************************************************
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| AP4 - hmhd Atoms
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| Copyright 2002-2008 Axiomatic Systems, LLC
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| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
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| Unless you have obtained Bento4 under a difference license,
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| this version of Bento4 is Bento4|GPL.
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| Bento4|GPL is free software; you can redistribute it and/or modify
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| it under the terms of the GNU General Public License as published by
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| the Free Software Foundation; either version 2, or (at your option)
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| any later version.
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| Bento4|GPL is distributed in the hope that it will be useful,
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| but WITHOUT ANY WARRANTY; without even the implied warranty of
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| GNU General Public License for more details.
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| You should have received a copy of the GNU General Public License
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| along with Bento4|GPL; see the file COPYING. If not, write to the
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| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 02111-1307, USA.
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****************************************************************/
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/*----------------------------------------------------------------------
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| includes
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+---------------------------------------------------------------------*/
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#include "Ap4HmhdAtom.h"
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#include "Ap4AtomFactory.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| AP4_HmhdAtom::Create
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+---------------------------------------------------------------------*/
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AP4_HmhdAtom*
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AP4_HmhdAtom::Create(AP4_Size size, AP4_ByteStream& stream)
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{
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AP4_UI08 version;
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AP4_UI32 flags;
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if (size < AP4_FULL_ATOM_HEADER_SIZE) return NULL;
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if (AP4_FAILED(AP4_Atom::ReadFullHeader(stream, version, flags))) return NULL;
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if (version != 0) return NULL;
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return new AP4_HmhdAtom(size, version, flags, stream);
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}
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/*----------------------------------------------------------------------
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| AP4_HmhdAtom::AP4_HmhdAtom
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+---------------------------------------------------------------------*/
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AP4_HmhdAtom::AP4_HmhdAtom(AP4_UI32 size,
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AP4_UI08 version,
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AP4_UI32 flags,
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AP4_ByteStream& stream) :
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AP4_Atom(AP4_ATOM_TYPE_HMHD, size, version, flags),
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m_MaxPduSize(0),
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m_AvgPduSize(0),
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m_MaxBitrate(0),
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m_AvgBitrate(0),
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m_Reserved(0)
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{
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stream.ReadUI16(m_MaxPduSize);
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stream.ReadUI16(m_AvgPduSize);
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stream.ReadUI32(m_MaxBitrate);
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stream.ReadUI32(m_AvgBitrate);
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stream.ReadUI32(m_Reserved);
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}
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/*----------------------------------------------------------------------
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| AP4_HmhdAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_HmhdAtom::WriteFields(AP4_ByteStream& stream)
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{
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AP4_Result result;
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// max pdu size
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result = stream.WriteUI16(m_MaxPduSize);
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if (AP4_FAILED(result)) return result;
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// avg pdu size
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result = stream.WriteUI16(m_AvgPduSize);
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if (AP4_FAILED(result)) return result;
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// max bitrate
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result = stream.WriteUI32(m_MaxBitrate);
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if (AP4_FAILED(result)) return result;
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// avg bitrate
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result = stream.WriteUI32(m_AvgBitrate);
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if (AP4_FAILED(result)) return result;
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// reserved
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result = stream.WriteUI32(m_Reserved);
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if (AP4_FAILED(result)) return result;
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return AP4_SUCCESS;
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}
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/*----------------------------------------------------------------------
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| AP4_HmhdAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_HmhdAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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inspector.AddField("max_pdu_size", m_MaxPduSize);
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inspector.AddField("avg_pdu_size", m_AvgPduSize);
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inspector.AddField("max_bitrate", m_MaxBitrate);
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inspector.AddField("avg_bitrate", m_AvgBitrate);
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return AP4_SUCCESS;
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}
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