mirror of
https://github.com/axiomatic-systems/Bento4.git
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117 lines
4.6 KiB
C++
117 lines
4.6 KiB
C++
/*****************************************************************
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| AP4 - trex 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 "Ap4TrexAtom.h"
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#include "Ap4AtomFactory.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| dynamic cast support
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+---------------------------------------------------------------------*/
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AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_TrexAtom)
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/*----------------------------------------------------------------------
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| AP4_TrexAtom::Create
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+---------------------------------------------------------------------*/
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AP4_TrexAtom*
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AP4_TrexAtom::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_TrexAtom(size, version, flags, stream);
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}
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/*----------------------------------------------------------------------
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| AP4_TrexAtom::AP4_TrexAtom
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+---------------------------------------------------------------------*/
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AP4_TrexAtom::AP4_TrexAtom(AP4_UI32 track_id,
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AP4_UI32 default_sample_description_index,
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AP4_UI32 default_sample_duration,
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AP4_UI32 default_sample_size,
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AP4_UI32 default_sample_flags) :
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AP4_Atom(AP4_ATOM_TYPE_TREX, AP4_FULL_ATOM_HEADER_SIZE+20, 0, 0),
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m_TrackId(track_id),
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m_DefaultSampleDescriptionIndex(default_sample_description_index),
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m_DefaultSampleDuration(default_sample_duration),
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m_DefaultSampleSize(default_sample_size),
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m_DefaultSampleFlags(default_sample_flags)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_TrexAtom::AP4_TrexAtom
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+---------------------------------------------------------------------*/
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AP4_TrexAtom::AP4_TrexAtom(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_TREX, size, version, flags)
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{
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stream.ReadUI32(m_TrackId);
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stream.ReadUI32(m_DefaultSampleDescriptionIndex);
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stream.ReadUI32(m_DefaultSampleDuration);
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stream.ReadUI32(m_DefaultSampleSize);
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stream.ReadUI32(m_DefaultSampleFlags);
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}
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/*----------------------------------------------------------------------
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| AP4_TrexAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_TrexAtom::WriteFields(AP4_ByteStream& stream)
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{
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stream.WriteUI32(m_TrackId);
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stream.WriteUI32(m_DefaultSampleDescriptionIndex);
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stream.WriteUI32(m_DefaultSampleDuration);
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stream.WriteUI32(m_DefaultSampleSize);
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stream.WriteUI32(m_DefaultSampleFlags);
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return AP4_SUCCESS;
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}
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/*----------------------------------------------------------------------
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| AP4_TrexAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_TrexAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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inspector.AddField("track id", m_TrackId);
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inspector.AddField("default sample description index", m_DefaultSampleDescriptionIndex);
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inspector.AddField("default sample duration", m_DefaultSampleDuration);
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inspector.AddField("default sample size", m_DefaultSampleSize);
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inspector.AddField("default sample flags", m_DefaultSampleFlags, AP4_AtomInspector::HINT_HEX);
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return AP4_SUCCESS;
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}
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