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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 /*********************************************************************************/
     19 /*     -------------------------------------------------------------------       */
     20 /*                        MPEG-4 H263SampleEntry Class                           */
     21 /*     -------------------------------------------------------------------       */
     22 /*********************************************************************************/
     23 /*
     24     H263SampleEntry
     25 */
     26 
     27 
     28 #define IMPLEMENT_H263SampleEntry
     29 
     30 #include "h263sampleentry.h"
     31 #include "h263decoderspecificinfo.h"
     32 #include "atomutils.h"
     33 #include "atomdefs.h"
     34 
     35 
     36 H263SampleEntry::H263SampleEntry(MP4_FF_FILE *fp, uint32 size, uint32 type)
     37         : Atom(fp, size, type)
     38 {
     39     _pH263SpecificAtom = NULL;
     40     _pH263decSpecificInfo = NULL;
     41 
     42     if (_success)
     43     {
     44         _pparent = NULL;
     45 
     46         // Read reserved values
     47         if (!AtomUtils::read8read8(fp, _reserved[0], _reserved[1]))
     48             _success = false;
     49         if (!AtomUtils::read8read8(fp, _reserved[2], _reserved[3]))
     50             _success = false;
     51         if (!AtomUtils::read8read8(fp, _reserved[4], _reserved[5]))
     52             _success = false;
     53 
     54         if (!AtomUtils::read16(fp, _dataReferenceIndex))
     55             _success = false;
     56 
     57         // Read in all reserved members
     58         for (int32 i = 0; i < 4; i++)
     59         {
     60             if (!AtomUtils::read32(fp, _reserved1[i]))
     61             {
     62                 _success = false;
     63                 break;
     64             }
     65         }
     66 
     67         if (_success)
     68         {
     69             if (!AtomUtils::read16(fp, _width))
     70                 _success = false;
     71             if (!AtomUtils::read16(fp, _height))
     72                 _success = false;
     73             if (!AtomUtils::read32(fp, _reserved3))
     74                 _success = false;
     75             if (!AtomUtils::read32read32(fp, _reserved4, _reserved5))
     76                 _success = false;
     77             if (!AtomUtils::read16(fp, _reserved6))
     78                 _success = false;
     79 
     80             for (int32 i = 0; i < 32; i++)
     81             {
     82                 if (!AtomUtils::read8(fp, _reserved7[i]))
     83                 {
     84                     _success = false;
     85                     break;
     86                 }
     87             }
     88 
     89             if (!AtomUtils::read16read16(fp, _reserved8, _reserved9))
     90                 _success = false;
     91         }
     92 
     93         if (_success)
     94         {
     95             uint32 atom_type = UNKNOWN_ATOM;
     96             uint32 atom_size = 0;
     97 
     98             AtomUtils::getNextAtomType(fp, atom_size, atom_type);
     99 
    100             if (atom_type != H263_SPECIFIC_ATOM)
    101             {
    102                 _success = false;
    103                 _mp4ErrorCode = READ_H263_SAMPLE_ENTRY_FAILED;
    104             }
    105             else
    106             {
    107                 PV_MP4_FF_NEW(fp->auditCB, H263SpecficAtom, (fp, atom_size, atom_type), _pH263SpecificAtom);
    108 
    109                 if (_pH263SpecificAtom->MP4Success())
    110                 {
    111                     PV_MP4_FF_NEW(fp->auditCB, H263DecoderSpecificInfo, (fp, true), _pH263decSpecificInfo);
    112 
    113                     _pH263decSpecificInfo->_VendorCode = _pH263SpecificAtom->getVendorCode();
    114                     _pH263decSpecificInfo->_codec_version = _pH263SpecificAtom->getDecoderVersion();
    115                     _pH263decSpecificInfo->_codec_level = _pH263SpecificAtom->getCodecLevel();
    116                     _pH263decSpecificInfo->_codec_profile = _pH263SpecificAtom->getCodecProfile();
    117                     _pH263decSpecificInfo->_max_width = _width;
    118                     _pH263decSpecificInfo->_max_height = _height;
    119                 }
    120             }
    121         }
    122         else
    123         {
    124             _mp4ErrorCode = READ_H263_SAMPLE_ENTRY_FAILED;
    125         }
    126     }
    127     else
    128     {
    129         _mp4ErrorCode = READ_H263_SAMPLE_ENTRY_FAILED;
    130     }
    131 
    132 }
    133 
    134 // Destructor
    135 H263SampleEntry::~H263SampleEntry()
    136 {
    137     if (_pH263SpecificAtom != NULL)
    138     {
    139         PV_MP4_FF_DELETE(NULL, H263SpecficAtom, _pH263SpecificAtom);
    140     }
    141 
    142     if (_pH263decSpecificInfo != NULL)
    143     {
    144         PV_MP4_FF_DELETE(NULL, H263DecoderSpecificInfo, _pH263decSpecificInfo);
    145     }
    146 }
    147