ref: 6b48b2586d74e7aa37d305fc60d1987428a5a618
dir: /common/mp4v2/atom_mp4a.cpp/
/*
* 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"
MP4Mp4aAtom::MP4Mp4aAtom()
: MP4Atom("mp4a")
{
AddReserved("reserved1", 6); /* 0 */
AddProperty( /* 1 */
new MP4Integer16Property("dataReferenceIndex"));
AddReserved("reserved2", 16); /* 2 */
AddProperty( /* 3 */
new MP4Integer16Property("timeScale"));
AddReserved("reserved3", 2); /* 4 */
ExpectChildAtom("esds", Required, OnlyOne);
}
void MP4Mp4aAtom::Generate()
{
MP4Atom::Generate();
((MP4Integer16Property*)m_pProperties[1])->SetValue(1);
// property reserved2 has non-zero fixed values
static u_int8_t reserved2[16] = {
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x02, 0x00, 0x10,
0x00, 0x00, 0x00, 0x00,
};
m_pProperties[2]->SetReadOnly(false);
((MP4BytesProperty*)m_pProperties[2])->
SetValue(reserved2, sizeof(reserved2));
m_pProperties[2]->SetReadOnly(true);
}