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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 {
///////////////////////////////////////////////////////////////////////////////
MP4StszAtom::MP4StszAtom(MP4File &file)
: MP4Atom(file, "stsz")
{
AddVersionAndFlags(); /* 0, 1 */
AddProperty( /* 2 */
new MP4Integer32Property(*this, "sampleSize"));
MP4Integer32Property* pCount =
new MP4Integer32Property(*this, "sampleCount");
AddProperty(pCount); /* 3 */
MP4TableProperty* pTable = new MP4TableProperty(*this, "entries", pCount);
AddProperty(pTable); /* 4 */
pTable->AddProperty( /* 4/0 */
new MP4Integer32Property(pTable->GetParentAtom(), "entrySize"));
}
void MP4StszAtom::Read()
{
ReadProperties(0, 4);
uint32_t sampleSize =
((MP4Integer32Property*)m_pProperties[2])->GetValue();
// only attempt to read entries table if sampleSize is zero
// i.e sample size is not constant
m_pProperties[4]->SetImplicit(sampleSize != 0);
ReadProperties(4);
Skip(); // to end of atom
}
void MP4StszAtom::Write()
{
uint32_t sampleSize =
((MP4Integer32Property*)m_pProperties[2])->GetValue();
// only attempt to write entries table if sampleSize is zero
// i.e sample size is not constant
m_pProperties[4]->SetImplicit(sampleSize != 0);
MP4Atom::Write();
}
///////////////////////////////////////////////////////////////////////////////
}
} // namespace mp4v2::impl
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