70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is MPEG4IP.
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*
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* The Initial Developer of the Original Code is Cisco Systems Inc.
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* Portions created by Cisco Systems Inc. are
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* Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved.
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*
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* Contributor(s):
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* Dave Mackie dmackie@cisco.com
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*/
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#include "mp4common.h"
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MP4StszAtom::MP4StszAtom()
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: MP4Atom("stsz")
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{
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AddVersionAndFlags(); /* 0, 1 */
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AddProperty( /* 2 */
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new MP4Integer32Property("sampleSize"));
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MP4Integer32Property* pCount =
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new MP4Integer32Property("sampleCount");
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AddProperty(pCount); /* 3 */
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MP4TableProperty* pTable = new MP4TableProperty("entries", pCount);
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AddProperty(pTable); /* 4 */
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pTable->AddProperty( /* 4/0 */
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new MP4Integer32Property("entrySize"));
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}
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void MP4StszAtom::Read()
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{
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ReadProperties(0, 4);
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u_int32_t sampleSize =
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((MP4Integer32Property*)m_pProperties[2])->GetValue();
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// only attempt to read entries table if sampleSize is zero
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// i.e sample size is not constant
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m_pProperties[4]->SetImplicit(sampleSize != 0);
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ReadProperties(4);
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Skip(); // to end of atom
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}
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void MP4StszAtom::Write()
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{
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u_int32_t sampleSize =
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((MP4Integer32Property*)m_pProperties[2])->GetValue();
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// only attempt to write entries table if sampleSize is zero
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// i.e sample size is not constant
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m_pProperties[4]->SetImplicit(sampleSize != 0);
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MP4Atom::Write();
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}
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