atom_stsd.cpp
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * 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 dmackie@cisco.com
- */
- #include "mp4common.h"
- MP4StsdAtom::MP4StsdAtom()
- : MP4Atom("stsd")
- {
- AddVersionAndFlags();
- MP4Integer32Property* pCount =
- new MP4Integer32Property("entryCount");
- pCount->SetReadOnly();
- AddProperty(pCount);
- ExpectChildAtom("mp4a", Optional, Many);
- ExpectChildAtom("mp4s", Optional, Many);
- ExpectChildAtom("mp4v", Optional, Many);
- ExpectChildAtom("rtp ", Optional, Many);
- }
- void MP4StsdAtom::Read()
- {
- /* do the usual read */
- MP4Atom::Read();
- // check that number of children == entryCount
- MP4Integer32Property* pCount =
- (MP4Integer32Property*)m_pProperties[2];
- if (m_pChildAtoms.Size() != pCount->GetValue()) {
- VERBOSE_READ(GetVerbosity(),
- printf("Warning: stsd inconsistency with number of entries"));
- /* fix it */
- pCount->SetReadOnly(false);
- pCount->SetValue(m_pChildAtoms.Size());
- pCount->SetReadOnly(true);
- }
- }