mirror of
https://github.com/axiomatic-systems/Bento4.git
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133 lines
4.9 KiB
C++
133 lines
4.9 KiB
C++
/*****************************************************************
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| AP4 - bloc Atoms
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| Copyright 2002-2012 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 "Ap4BlocAtom.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| AP4_BlocAtom Dynamic Cast Anchor
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+---------------------------------------------------------------------*/
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AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_BlocAtom)
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::Create
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+---------------------------------------------------------------------*/
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AP4_BlocAtom*
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AP4_BlocAtom::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 > 1) return NULL;
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return new AP4_BlocAtom(size, version, flags, stream);
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}
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::AP4_BlocAtom
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+---------------------------------------------------------------------*/
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AP4_BlocAtom::AP4_BlocAtom() :
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AP4_Atom(AP4_ATOM_TYPE_BLOC, AP4_FULL_ATOM_HEADER_SIZE+256+256+512, 0, 0)
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{
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AP4_SetMemory(m_BaseLocation, 0, 256+1);
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AP4_SetMemory(m_PurchaseLocation, 0, 256+1);
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AP4_SetMemory(m_Reserved, 0, 512);
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}
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::AP4_BlocAtom
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+---------------------------------------------------------------------*/
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AP4_BlocAtom::AP4_BlocAtom(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_BLOC, size, version, flags)
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{
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m_BaseLocation[256] = 0;
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m_PurchaseLocation[256] = 0;
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stream.Read(m_BaseLocation, 256);
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stream.Read(m_PurchaseLocation, 256);
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stream.Read(m_Reserved, 512);
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}
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::SetBaseLocation
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+---------------------------------------------------------------------*/
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void
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AP4_BlocAtom::SetBaseLocation(const char* base_location)
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{
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unsigned int len = (unsigned int)AP4_StringLength(base_location);
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if (len > 256) len = 256;
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AP4_CopyMemory(m_BaseLocation, base_location, len);
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AP4_SetMemory(&m_BaseLocation[len], 0, 256-len+1);
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}
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::SetPurchaseLocation
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+---------------------------------------------------------------------*/
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void
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AP4_BlocAtom::SetPurchaseLocation(const char* purchase_location)
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{
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unsigned int len = (unsigned int)AP4_StringLength(purchase_location);
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if (len > 256) len = 256;
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AP4_CopyMemory(m_PurchaseLocation, purchase_location, len);
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AP4_SetMemory(&m_PurchaseLocation[len], 0, 256-len+1);
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}
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/*----------------------------------------------------------------------
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| AP4_BlocAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_BlocAtom::WriteFields(AP4_ByteStream& stream)
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{
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AP4_Result result;
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result = stream.Write(m_BaseLocation, 256);
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if (AP4_FAILED(result)) return result;
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result = stream.Write(m_PurchaseLocation, 256);
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if (AP4_FAILED(result)) return result;
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result = stream.Write(m_Reserved, 512);
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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_BlocAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_BlocAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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inspector.AddField("base_location", GetBaseLocation());
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inspector.AddField("purchase_location", GetPurchaseLocation());
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return AP4_SUCCESS;
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}
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