mirror of
https://github.com/axiomatic-systems/Bento4.git
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117 lines
4.1 KiB
C++
117 lines
4.1 KiB
C++
/*****************************************************************
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| AP4 - url 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 "Ap4UrlAtom.h"
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#include "Ap4AtomFactory.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| AP4_UrlAtom::Create
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+---------------------------------------------------------------------*/
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AP4_UrlAtom*
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AP4_UrlAtom::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_UrlAtom(size, version, flags, stream);
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}
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/*----------------------------------------------------------------------
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| AP4_UrlAtom::AP4_UrlAtom
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+---------------------------------------------------------------------*/
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AP4_UrlAtom::AP4_UrlAtom() :
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AP4_Atom(AP4_ATOM_TYPE_URL, AP4_FULL_ATOM_HEADER_SIZE, 0, 1)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_UrlAtom::AP4_UrlAtom
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+---------------------------------------------------------------------*/
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AP4_UrlAtom::AP4_UrlAtom(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_URL, size, version, flags)
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{
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if ((m_Flags & 1) == 0) {
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// not self contained
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AP4_Size str_size = size-AP4_FULL_ATOM_HEADER_SIZE;
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if (str_size > 0) {
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char* str = new char[str_size];
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stream.Read(str, str_size);
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str[str_size-1] = '\0'; // force null-termination
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m_Url = str;
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delete[] str;
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}
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}
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}
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/*----------------------------------------------------------------------
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| AP4_UrlAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_UrlAtom::WriteFields(AP4_ByteStream& stream)
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{
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if (m_Flags & 1) {
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// local ref (self contained)
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return AP4_SUCCESS;
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} else {
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// url (not self contained)
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if (m_Size32 > AP4_FULL_ATOM_HEADER_SIZE) {
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AP4_Result result = stream.Write(m_Url.GetChars(), m_Url.GetLength()+1);
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if (AP4_FAILED(result)) return result;
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// pad with zeros if necessary
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AP4_Size padding = m_Size32-(AP4_FULL_ATOM_HEADER_SIZE+m_Url.GetLength()+1);
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while (padding--) stream.WriteUI08(0);
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}
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return AP4_SUCCESS;
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}
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}
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/*----------------------------------------------------------------------
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| AP4_UrlAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_UrlAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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if (m_Flags & 1) {
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inspector.AddField("location", "[local to file]");
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} else {
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inspector.AddField("location", m_Url.GetChars());
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}
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return AP4_SUCCESS;
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}
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