atom_hinf.cpp

来自「6410BSP1」· C++ 代码 · 共 58 行

/*
 * 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        [e-mail]
 */

#include "mp4common.h"

MP4HinfAtom::MP4HinfAtom() 
    : MP4Atom("hinf")
{
    ExpectChildAtom("trpy", Optional, OnlyOne);
    ExpectChildAtom("nump", Optional, OnlyOne);
    ExpectChildAtom("tpyl", Optional, OnlyOne);
    ExpectChildAtom("maxr", Optional, Many);
    ExpectChildAtom("dmed", Optional, OnlyOne);
    ExpectChildAtom("dimm", Optional, OnlyOne);
    ExpectChildAtom("drep", Optional, OnlyOne);
    ExpectChildAtom("tmin", Optional, OnlyOne);
    ExpectChildAtom("tmax", Optional, OnlyOne);
    ExpectChildAtom("pmax", Optional, OnlyOne);
    ExpectChildAtom("dmax", Optional, OnlyOne);
    ExpectChildAtom("payt", Optional, OnlyOne);
}

void MP4HinfAtom::Generate()
{
    // hinf is special in that although all it's child atoms
    // are optional (on read), if we generate it for writing
    // we really want all the children

    for (u_int32_t i = 0; i < m_pChildAtomInfos.Size(); i++) {
        MP4Atom* pChildAtom = 
            CreateAtom(m_pChildAtomInfos[i]->m_name);

        AddChildAtom(pChildAtom);

        // and ask it to self generate
        pChildAtom->Generate();
    }
}