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/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is MPEG4IP.
*
* The Initial Developer of the Original Code is Cisco Systems Inc.
* Portions created by Cisco Systems Inc. are
* Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved.
*
* Contributor(s):
* Dave Mackie [email protected]
*/
#include "src/impl.h"
namespace mp4v2 { namespace impl {
///////////////////////////////////////////////////////////////////////////////
MP4MdhdAtom::MP4MdhdAtom(MP4File &file)
: MP4Atom(file, "mdhd")
{
AddVersionAndFlags();
}
void MP4MdhdAtom::AddProperties(uint8_t version)
{
if (version == 1) {
AddProperty(
new MP4Integer64Property(*this, "creationTime"));
AddProperty(
new MP4Integer64Property(*this, "modificationTime"));
} else {
AddProperty(
new MP4Integer32Property(*this, "creationTime"));
AddProperty(
new MP4Integer32Property(*this, "modificationTime"));
}
AddProperty(
new MP4Integer32Property(*this, "timeScale"));
if (version == 1) {
AddProperty(
new MP4Integer64Property(*this, "duration"));
} else {
AddProperty(
new MP4Integer32Property(*this, "duration"));
}
AddProperty( new MP4LanguageCodeProperty(*this, "language" ));
AddReserved(*this, "reserved", 2);
}
void MP4MdhdAtom::Generate()
{
uint8_t version = m_File.Use64Bits(GetType()) ? 1 : 0;
SetVersion(version);
AddProperties(version);
MP4Atom::Generate();
// set creation and modification times
MP4Timestamp now = MP4GetAbsTimestamp();
if (version == 1) {
((MP4Integer64Property*)m_pProperties[2])->SetValue(now);
((MP4Integer64Property*)m_pProperties[3])->SetValue(now);
} else {
((MP4Integer32Property*)m_pProperties[2])->SetValue(now);
((MP4Integer32Property*)m_pProperties[3])->SetValue(now);
}
}
void MP4MdhdAtom::Read()
{
/* read atom version */
ReadProperties(0, 1);
/* need to create the properties based on the atom version */
AddProperties(GetVersion());
/* now we can read the remaining properties */
ReadProperties(1);
Skip(); // to end of atom
}
///////////////////////////////////////////////////////////////////////////////
}} // namespace mp4v2::impl
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