mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-29 16:56:06 +00:00
92 lines
2.2 KiB
C++
92 lines
2.2 KiB
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"
|
|
|
|
MP4MdhdAtom::MP4MdhdAtom()
|
|
: MP4Atom("mdhd")
|
|
{
|
|
AddVersionAndFlags();
|
|
}
|
|
|
|
void MP4MdhdAtom::AddProperties(u_int8_t version)
|
|
{
|
|
if (version == 1) {
|
|
AddProperty(
|
|
new MP4Integer64Property("creationTime"));
|
|
AddProperty(
|
|
new MP4Integer64Property("modificationTime"));
|
|
} else {
|
|
AddProperty(
|
|
new MP4Integer32Property("creationTime"));
|
|
AddProperty(
|
|
new MP4Integer32Property("modificationTime"));
|
|
}
|
|
|
|
AddProperty(
|
|
new MP4Integer32Property("timeScale"));
|
|
|
|
if (version == 1) {
|
|
AddProperty(
|
|
new MP4Integer64Property("duration"));
|
|
} else {
|
|
AddProperty(
|
|
new MP4Integer32Property("duration"));
|
|
}
|
|
|
|
AddProperty(
|
|
new MP4Integer16Property("language"));
|
|
AddReserved("reserved", 2);
|
|
}
|
|
|
|
void MP4MdhdAtom::Generate()
|
|
{
|
|
u_int8_t version = m_pFile->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
|
|
}
|