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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 #define IMPLEMENT_MovieFragmentHeaderAtom
     19 
     20 #include "moviefragmentheaderatom.h"
     21 
     22 // constructor
     23 PVA_FF_MovieFragmentHeaderAtom::PVA_FF_MovieFragmentHeaderAtom(uint32 sequenceNumber)
     24         : PVA_FF_FullAtom(MOVIE_FRAGMENT_HEADER_ATOM, (uint8)0, (uint32)0)
     25 {
     26     _sequenceNumber = sequenceNumber;
     27 
     28     recomputeSize();
     29 
     30 }
     31 
     32 // destructor
     33 PVA_FF_MovieFragmentHeaderAtom::~PVA_FF_MovieFragmentHeaderAtom()
     34 {
     35     // do nothing
     36 }
     37 
     38 
     39 // return sequence number
     40 uint32
     41 PVA_FF_MovieFragmentHeaderAtom::getSequenceNumber()
     42 {
     43     return _sequenceNumber;
     44 }
     45 
     46 
     47 // recompute size of atom
     48 void
     49 PVA_FF_MovieFragmentHeaderAtom::recomputeSize()
     50 {
     51     int32 size = getDefaultSize();
     52 
     53     size += 4; // For sequence number
     54 
     55     _size = size;
     56 
     57     // Update the parent atom size
     58     if (_pparent != NULL)
     59     {
     60         _pparent->recomputeSize();
     61     }
     62 }
     63 
     64 
     65 // write atom to target file
     66 bool
     67 PVA_FF_MovieFragmentHeaderAtom::renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP* fp)
     68 {
     69     uint32 rendered = 0;
     70 
     71     if (!renderAtomBaseMembers(fp))
     72     {
     73         return false;
     74     }
     75     rendered += getDefaultSize();
     76 
     77     if (!PVA_FF_AtomUtils::render32(fp, _sequenceNumber))
     78     {
     79         return false;
     80     }
     81     rendered += 4;
     82 
     83     return true;
     84 }
     85 
     86