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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 AudioSampleEntry Class                          */
     21 /*     -------------------------------------------------------------------       */
     22 /*********************************************************************************/
     23 /*
     24     This AudioSampleEntry Class is used for visual streams.
     25 */
     26 
     27 #define IMPLEMENT_AMRSampleEntry
     28 
     29 #include "amrsampleentry.h"
     30 #include "amrdecoderspecificinfo.h"
     31 #include "atomutils.h"
     32 #include "atomdefs.h"
     33 
     34 typedef Oscl_Vector<DecoderSpecificInfo*, OsclMemAllocator> decoderSpecificInfoVecType;
     35 // Stream-in ctor
     36 AMRSampleEntry::AMRSampleEntry(MP4_FF_FILE *fp, uint32 size, uint32 type)
     37         : Atom(fp, size, type)
     38 {
     39     _pAMRSpecificAtom = NULL;
     40     _pAMRDecSpecInfoArray = NULL;
     41 
     42     if (_success)
     43     {
     44         // Read reserved values
     45         if (!AtomUtils::read8read8(fp, _reserved[0], _reserved[1]))
     46             _success = false;
     47         if (!AtomUtils::read8read8(fp, _reserved[2], _reserved[3]))
     48             _success = false;
     49         if (!AtomUtils::read8read8(fp, _reserved[4], _reserved[5]))
     50             _success = false;
     51 
     52         if (!AtomUtils::read16(fp, _dataReferenceIndex))
     53             _success = false;
     54 
     55         if (!AtomUtils::read32read32(fp, _reserved1[0], _reserved1[1]))
     56             _success = false;
     57         if (!AtomUtils::read16read16(fp, _reserved2, _reserved3))
     58             _success = false;
     59         if (!AtomUtils::read32(fp, _reserved4))
     60             _success = false;
     61 
     62         if (!AtomUtils::read16read16(fp, _timeScale, _reserved5))
     63             _success = false;
     64 
     65         if (_success)
     66         {
     67             uint32 atom_type = UNKNOWN_ATOM;
     68             uint32 atom_size = 0;
     69 
     70             AtomUtils::getNextAtomType(fp, atom_size, atom_type);
     71 
     72             if (atom_type != AMR_SPECIFIC_ATOM)
     73             {
     74                 _success = false;
     75                 _mp4ErrorCode = READ_AMR_SAMPLE_ENTRY_FAILED;
     76             }
     77             else
     78             {
     79                 PV_MP4_FF_NEW(fp->auditCB, AMRSpecificAtom, (fp, atom_size, atom_type), _pAMRSpecificAtom);
     80 
     81                 if (!_pAMRSpecificAtom->MP4Success())
     82                 {
     83                     _success = false;
     84                     _mp4ErrorCode = READ_AMR_SAMPLE_ENTRY_FAILED;
     85                 }
     86 
     87                 PV_MP4_FF_NEW(fp->auditCB, decoderSpecificInfoVecType, (), _pAMRDecSpecInfoArray);
     88 
     89                 for (uint32 i = 0; i < 16; i++)
     90                 {
     91                     AMRDecoderSpecificInfo *pinfo = NULL;
     92                     PV_MP4_FF_NEW(fp->auditCB, AMRDecoderSpecificInfo, (fp, true), pinfo);
     93 
     94                     pinfo->_frame_type = (uint8)i;
     95                     pinfo->_codec_version = _pAMRSpecificAtom->getDecoderVersion();
     96                     pinfo->_mode_change_period = _pAMRSpecificAtom->getModeChangePeriod();
     97                     pinfo->_mode_set = _pAMRSpecificAtom->getModeSet();
     98                     pinfo->_mode_change_neighbour = false;
     99 
    100                     (*_pAMRDecSpecInfoArray).push_back(pinfo);
    101                 }
    102             }
    103         }
    104         else
    105         {
    106             _mp4ErrorCode = READ_AMR_SAMPLE_ENTRY_FAILED;
    107         }
    108     }
    109     else
    110     {
    111         _mp4ErrorCode = READ_AMR_SAMPLE_ENTRY_FAILED;
    112     }
    113 
    114 }
    115 
    116 // Destructor
    117 AMRSampleEntry::~AMRSampleEntry()
    118 {
    119     if (_pAMRSpecificAtom != NULL)
    120     {
    121         // Cleanup ESDAtom
    122         PV_MP4_FF_DELETE(NULL, AMRSpecificAtom, _pAMRSpecificAtom);
    123     }
    124     if (_pAMRDecSpecInfoArray != NULL)
    125     {
    126         for (uint32 i = 0; i < _pAMRDecSpecInfoArray->size(); i++)
    127         {
    128             PV_MP4_FF_DELETE(NULL, DecoderSpecificInfo, (*_pAMRDecSpecInfoArray)[i]);
    129         }
    130     }
    131 
    132     if (_pAMRDecSpecInfoArray != NULL)
    133     {
    134         PV_MP4_FF_TEMPLATED_DELETE(NULL, decoderSpecificInfoVecType, Oscl_Vector, _pAMRDecSpecInfoArray);
    135         _pAMRDecSpecInfoArray = NULL;
    136     }
    137 
    138 }
    139 
    140 DecoderSpecificInfo *
    141 AMRSampleEntry::getDecoderSpecificInfo(uint32 index)
    142 {
    143     if ((_pAMRDecSpecInfoArray->size() == 0) ||
    144             (index >= (uint32)(_pAMRDecSpecInfoArray->size())))
    145     {
    146         return NULL;
    147     }
    148     else
    149     {
    150         return ((*_pAMRDecSpecInfoArray)[index]);
    151     }
    152 }
    153