mirror of
https://github.com/axiomatic-systems/Bento4.git
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147 lines
4.7 KiB
C++
147 lines
4.7 KiB
C++
/*****************************************************************
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| AP4 - File
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| Copyright 2002-2006 Gilles Boccon-Gibod & Julien Boeuf
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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 "Ap4File.h"
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#include "Ap4Atom.h"
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#include "Ap4TrakAtom.h"
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#include "Ap4MoovAtom.h"
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#include "Ap4MvhdAtom.h"
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#include "Ap4AtomFactory.h"
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#include "Ap4Movie.h"
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#include "Ap4FtypAtom.h"
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#include "Ap4MetaData.h"
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/*----------------------------------------------------------------------
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| AP4_File::AP4_File
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+---------------------------------------------------------------------*/
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AP4_File::AP4_File(AP4_Movie* movie) :
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m_Movie(movie),
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m_FileType(NULL),
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m_MetaData(NULL),
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m_MoovAtomPosition(0),
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m_MdatAtomPosition(0)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_File::AP4_File
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+---------------------------------------------------------------------*/
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AP4_File::AP4_File(AP4_ByteStream& stream, AP4_AtomFactory& atom_factory) :
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m_Movie(NULL),
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m_FileType(NULL),
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m_MetaData(NULL),
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m_MoovAtomPosition(0),
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m_MdatAtomPosition(0)
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{
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// get all atoms
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AP4_Atom* atom;
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AP4_Position position = 0;
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while (stream.Tell(position),
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AP4_SUCCEEDED(atom_factory.CreateAtomFromStream(stream, atom))) {
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switch (atom->GetType()) {
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case AP4_ATOM_TYPE_MOOV:
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m_Movie = new AP4_Movie(dynamic_cast<AP4_MoovAtom*>(atom),
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stream);
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m_MoovAtomPosition = position;
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break;
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case AP4_ATOM_TYPE_FTYP:
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m_FileType = dynamic_cast<AP4_FtypAtom*>(atom);
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break;
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case AP4_ATOM_TYPE_MDAT:
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// remember the offset of the media data
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m_MdatAtomPosition = position;
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// FALLTHROUGH
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default:
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m_OtherAtoms.Add(atom);
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break;
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}
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}
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}
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/*----------------------------------------------------------------------
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| AP4_File::~AP4_File
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+---------------------------------------------------------------------*/
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AP4_File::~AP4_File()
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{
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delete m_Movie;
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delete m_FileType;
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delete m_MetaData;
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m_OtherAtoms.DeleteReferences();
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}
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/*----------------------------------------------------------------------
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| AP4_File::Inspect
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_File::Inspect(AP4_AtomInspector& inspector)
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{
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// dump the moov atom first
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if (m_Movie) m_Movie->Inspect(inspector);
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// dump the other atoms
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m_OtherAtoms.Apply(AP4_AtomListInspector(inspector));
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return AP4_SUCCESS;
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}
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/*----------------------------------------------------------------------
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| AP4_File::SetFileType
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_File::SetFileType(AP4_UI32 major_brand,
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AP4_UI32 minor_version,
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AP4_UI32* compatible_brands,
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AP4_Cardinal compatible_brand_count)
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{
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delete m_FileType;
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m_FileType = new AP4_FtypAtom(major_brand,
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minor_version,
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compatible_brands,
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compatible_brand_count);
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return AP4_SUCCESS;
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}
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/*----------------------------------------------------------------------
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| AP4_File::GetMetaData
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+---------------------------------------------------------------------*/
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const AP4_MetaData*
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AP4_File::GetMetaData()
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{
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if (m_MetaData == NULL) {
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m_MetaData = new AP4_MetaData(this);
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}
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return m_MetaData;
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}
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