ref: b2aec36134f39421dc3a434d973409d98bffb3aa
dir: /common/mp4v2/atom_trun.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 [email protected] */ #include "mp4common.h" MP4TrunAtom::MP4TrunAtom() : MP4Atom("trun") { AddVersionAndFlags(); /* 0, 1 */ AddProperty( /* 2 */ new MP4Integer32Property("sampleCount")); } void MP4TrunAtom::AddProperties(u_int32_t flags) { if (flags & 0x01) { // Note this is a signed 32 value AddProperty( new MP4Integer32Property("dataOffset")); } if (flags & 0x04) { AddProperty( new MP4Integer32Property("firstSampleFlags")); } MP4TableProperty* pTable = new MP4TableProperty("samples", m_pProperties[2]); AddProperty(pTable); if (flags & 0x100) { pTable->AddProperty( new MP4Integer32Property("sampleDuration")); } if (flags & 0x200) { pTable->AddProperty( new MP4Integer32Property("sampleSize")); } if (flags & 0x400) { pTable->AddProperty( new MP4Integer32Property("sampleFlags")); } if (flags & 0x800) { pTable->AddProperty( new MP4Integer32Property("sampleCompositionTimeOffset")); } } void MP4TrunAtom::Read() { /* read atom version, flags, and sampleCount */ ReadProperties(0, 3); /* need to create the properties based on the atom flags */ AddProperties(GetFlags()); /* now we can read the remaining properties */ ReadProperties(3); Skip(); // to end of atom }