70 lines
1.7 KiB
C++
70 lines
1.7 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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MP4TfhdAtom::MP4TfhdAtom()
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: MP4Atom("tfhd")
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{
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AddVersionAndFlags(); /* 0, 1 */
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AddProperty( /* 2 */
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new MP4Integer32Property("trackId"));
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}
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void MP4TfhdAtom::AddProperties(u_int32_t flags)
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{
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if (flags & 0x01) {
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// note this property is signed 64!
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AddProperty(
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new MP4Integer64Property("baseDataOffset"));
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}
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if (flags & 0x02) {
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AddProperty(
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new MP4Integer32Property("sampleDescriptionIndex"));
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}
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if (flags & 0x08) {
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AddProperty(
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new MP4Integer32Property("defaultSampleDuration"));
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}
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if (flags & 0x10) {
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AddProperty(
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new MP4Integer32Property("defaultSampleSize"));
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}
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if (flags & 0x20) {
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AddProperty(
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new MP4Integer32Property("defaultSampleFlags"));
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}
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}
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void MP4TfhdAtom::Read()
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{
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/* read atom version, flags, and trackId */
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ReadProperties(0, 3);
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/* need to create the properties based on the atom flags */
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AddProperties(GetFlags());
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/* now we can read the remaining properties */
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ReadProperties(3);
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Skip(); // to end of atom
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}
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