/*****************************************************************
|
|    AP4 - File
|
|    Copyright 2002-2006 Gilles Boccon-Gibod & Julien Boeuf
|
|
|    This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
|    Unless you have obtained Bento4 under a difference license,
|    this version of Bento4 is Bento4|GPL.
|    Bento4|GPL is free software; you can redistribute it and/or modify
|    it under the terms of the GNU General Public License as published by
|    the Free Software Foundation; either version 2, or (at your option)
|    any later version.
|
|    Bento4|GPL is distributed in the hope that it will be useful,
|    but WITHOUT ANY WARRANTY; without even the implied warranty of
|    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
|    GNU General Public License for more details.
|
|    You should have received a copy of the GNU General Public License
|    along with Bento4|GPL; see the file COPYING.  If not, write to the
|    Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|    02111-1307, USA.
|
 ****************************************************************/

/*----------------------------------------------------------------------
|   includes
+---------------------------------------------------------------------*/
#include "Ap4File.h"
#include "Ap4Atom.h"
#include "Ap4TrakAtom.h"
#include "Ap4MoovAtom.h"
#include "Ap4MvhdAtom.h"
#include "Ap4AtomFactory.h"
#include "Ap4Movie.h"
#include "Ap4FtypAtom.h"
#include "Ap4MetaData.h"

/*----------------------------------------------------------------------
|   AP4_File::AP4_File
+---------------------------------------------------------------------*/
AP4_File::AP4_File(AP4_Movie* movie) :
    m_Movie(movie),
    m_FileType(NULL),
    m_MetaData(NULL),
    m_MoovAtomPosition(0),
    m_MdatAtomPosition(0)
{
}

/*----------------------------------------------------------------------
|   AP4_File::AP4_File
+---------------------------------------------------------------------*/
AP4_File::AP4_File(AP4_ByteStream& stream, AP4_AtomFactory& atom_factory) :
    m_Movie(NULL),
    m_FileType(NULL),
    m_MetaData(NULL),
    m_MoovAtomPosition(0),
    m_MdatAtomPosition(0)
{
    // get all atoms
    AP4_Atom* atom;
    AP4_Position position = 0;
    while (stream.Tell(position), 
           AP4_SUCCEEDED(atom_factory.CreateAtomFromStream(stream, atom))) {
        switch (atom->GetType()) {
            case AP4_ATOM_TYPE_MOOV:
                m_Movie = new AP4_Movie(dynamic_cast<AP4_MoovAtom*>(atom),
                                        stream);
                m_MoovAtomPosition = position;
                break;

            case AP4_ATOM_TYPE_FTYP:
                m_FileType = dynamic_cast<AP4_FtypAtom*>(atom);
                break;

            case AP4_ATOM_TYPE_MDAT:
                // remember the offset of the media data
                m_MdatAtomPosition = position;
                // FALLTHROUGH
                
            default:
                m_OtherAtoms.Add(atom);
                break;
        }
    }
}
    
/*----------------------------------------------------------------------
|   AP4_File::~AP4_File
+---------------------------------------------------------------------*/
AP4_File::~AP4_File()
{
    delete m_Movie;
    delete m_FileType;
    delete m_MetaData;
    m_OtherAtoms.DeleteReferences();
}

/*----------------------------------------------------------------------
|   AP4_File::Inspect
+---------------------------------------------------------------------*/
AP4_Result
AP4_File::Inspect(AP4_AtomInspector& inspector)
{
    // dump the moov atom first
    if (m_Movie) m_Movie->Inspect(inspector);

    // dump the other atoms
    m_OtherAtoms.Apply(AP4_AtomListInspector(inspector));

    return AP4_SUCCESS;
}

/*----------------------------------------------------------------------
|   AP4_File::SetFileType
+---------------------------------------------------------------------*/
AP4_Result
AP4_File::SetFileType(AP4_UI32     major_brand,
                      AP4_UI32     minor_version,
                      AP4_UI32*    compatible_brands,
                      AP4_Cardinal compatible_brand_count)
{
    delete m_FileType;
    m_FileType = new AP4_FtypAtom(major_brand, 
                                  minor_version,
                                  compatible_brands,
                                  compatible_brand_count);
    return AP4_SUCCESS;
}

/*----------------------------------------------------------------------
|   AP4_File::GetMetaData
+---------------------------------------------------------------------*/
const AP4_MetaData*
AP4_File::GetMetaData()
{
    if (m_MetaData == NULL) {
        m_MetaData = new AP4_MetaData(this);
    }

    return m_MetaData;
}
