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|
/*****************************************************************
|
| AP4 - bloc Atoms
|
| Copyright 2002-2012 Axiomatic Systems, LLC
|
|
| 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 "Ap4BlocAtom.h"
#include "Ap4Utils.h"
/*----------------------------------------------------------------------
| AP4_BlocAtom Dynamic Cast Anchor
+---------------------------------------------------------------------*/
AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_BlocAtom)
/*----------------------------------------------------------------------
| AP4_BlocAtom::Create
+---------------------------------------------------------------------*/
AP4_BlocAtom*
AP4_BlocAtom::Create(AP4_Size size, AP4_ByteStream& stream)
{
AP4_UI08 version;
AP4_UI32 flags;
if (AP4_FAILED(AP4_Atom::ReadFullHeader(stream, version, flags))) return NULL;
if (version > 1) return NULL;
return new AP4_BlocAtom(size, version, flags, stream);
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::AP4_BlocAtom
+---------------------------------------------------------------------*/
AP4_BlocAtom::AP4_BlocAtom() :
AP4_Atom(AP4_ATOM_TYPE_BLOC, AP4_FULL_ATOM_HEADER_SIZE+256+256+512, 0, 0)
{
AP4_SetMemory(m_BaseLocation, 0, 256+1);
AP4_SetMemory(m_PurchaseLocation, 0, 256+1);
AP4_SetMemory(m_Reserved, 0, 512);
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::AP4_BlocAtom
+---------------------------------------------------------------------*/
AP4_BlocAtom::AP4_BlocAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_BLOC, size, version, flags)
{
m_BaseLocation[256] = 0;
m_PurchaseLocation[256] = 0;
stream.Read(m_BaseLocation, 256);
stream.Read(m_PurchaseLocation, 256);
stream.Read(m_Reserved, 512);
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::SetBaseLocation
+---------------------------------------------------------------------*/
void
AP4_BlocAtom::SetBaseLocation(const char* base_location)
{
unsigned int len = (unsigned int)AP4_StringLength(base_location);
if (len > 256) len = 256;
AP4_CopyMemory(m_BaseLocation, base_location, len);
AP4_SetMemory(&m_BaseLocation[len], 0, 256-len+1);
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::SetPurchaseLocation
+---------------------------------------------------------------------*/
void
AP4_BlocAtom::SetPurchaseLocation(const char* purchase_location)
{
unsigned int len = (unsigned int)AP4_StringLength(purchase_location);
if (len > 256) len = 256;
AP4_CopyMemory(m_PurchaseLocation, purchase_location, len);
AP4_SetMemory(&m_PurchaseLocation[len], 0, 256-len+1);
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::WriteFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_BlocAtom::WriteFields(AP4_ByteStream& stream)
{
AP4_Result result;
result = stream.Write(m_BaseLocation, 256);
if (AP4_FAILED(result)) return result;
result = stream.Write(m_PurchaseLocation, 256);
if (AP4_FAILED(result)) return result;
result = stream.Write(m_Reserved, 512);
if (AP4_FAILED(result)) return result;
return AP4_SUCCESS;
}
/*----------------------------------------------------------------------
| AP4_BlocAtom::InspectFields
+---------------------------------------------------------------------*/
AP4_Result
AP4_BlocAtom::InspectFields(AP4_AtomInspector& inspector)
{
inspector.AddField("base_location", GetBaseLocation());
inspector.AddField("purchase_location", GetPurchaseLocation());
return AP4_SUCCESS;
}
|
