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 InitialObjectDescriptor Class */ 21 /* ------------------------------------------------------------------- */ 22 /*********************************************************************************/ 23 24 25 #define IMPLEMENT_InitialObjectDescriptor 26 27 #include "initialobjectdescriptor.h" 28 #include "atomutils.h" 29 30 typedef Oscl_Vector<ES_ID_Inc*, OsclMemAllocator> ES_ID_IncVecType; 31 32 // Stream-in Constructor 33 InitialObjectDescriptor::InitialObjectDescriptor(MP4_FF_FILE *fp) 34 : ObjectDescriptor(fp, false) 35 { 36 if (_success) 37 { 38 39 _pES_ID_Inc = NULL; 40 41 _reserved = 0xf; 42 43 uint16 data; 44 if (!AtomUtils::read16(fp, data)) 45 _success = false; 46 47 _objectDescriptorID = (uint16)(data >> 6); 48 49 _urlFlag = false; 50 if (((data >> 5) & 0x0001) == 1) 51 { 52 _urlFlag = true; 53 } 54 55 _includeInlineProfilesFlag = false; 56 if (((data >> 4) & 0x0001) == 1) 57 { 58 _includeInlineProfilesFlag = true; 59 } 60 61 if (_urlFlag) 62 { 63 if (!AtomUtils::read8(fp, _urlLength)) 64 _success = false; 65 66 _urlStringPtr = (uint8 *) oscl_malloc(_urlLength + 1); // +1 for the null termination 67 68 if (!AtomUtils::readByteData(fp, _urlLength, _urlStringPtr)) 69 _success = false; 70 } 71 else 72 { 73 if (!AtomUtils::read8(fp, _ODProfileLevelIndication)) 74 _success = false; 75 if (!AtomUtils::read8(fp, _sceneProfileLevelIndication)) 76 _success = false; 77 if (!AtomUtils::read8(fp, _audioProfileLevelIndication)) 78 _success = false; 79 if (!AtomUtils::read8(fp, _visualProfileLevelIndication)) 80 _success = false; 81 if (!AtomUtils::read8(fp, _graphicsProfileLevelIndication)) 82 _success = false; 83 84 // Read in ESDescriptor references (i.e. ESIDs) 85 int32 readIn = getSizeOfSizeField(); 86 readIn += 1; // For tag 87 readIn += 5; // For 5 level indicators 88 readIn += 2; // For 10-bit ODID, etc. 89 int32 delta = _sizeOfClass - readIn; 90 91 uint8 tag; 92 tag = AtomUtils::peekNextByte(fp); 93 if (tag == 0) //ES_ID, old version 94 { 95 for (int32 i = 0; i < delta; i++) 96 { 97 uint8 data_8; 98 99 if (!AtomUtils::read8(fp, data_8)) 100 { 101 _success = false; 102 break; 103 } 104 } 105 } 106 else if (tag == ES_DESCRIPTOR_TAG) 107 { 108 // TO TAKE CARE OF THE CASE WHERE IN 109 // WE HAVE THE "ES_DecsrTag" AS OPPOSSED 110 // TO AN "ES_ID_IncTag" 111 for (int32 i = 0; i < delta; i++) 112 { 113 uint8 data_8; 114 if (!AtomUtils::read8(fp, data_8)) 115 { 116 _success = false; 117 break; 118 } 119 } 120 } 121 else 122 {//new version ES_ID_Inc and ES_ID_Ref 123 ES_ID_Inc *esIDInc; 124 125 PV_MP4_FF_NEW(fp->auditCB, ES_ID_IncVecType, (), _pES_ID_Inc); 126 127 while (delta > 0) 128 { 129 130 tag = AtomUtils::peekNextByte(fp); 131 132 if (tag == ES_ID_INC_TAG) 133 { 134 PV_MP4_FF_NEW(fp->auditCB, ES_ID_Inc, (fp), esIDInc); 135 delta -= esIDInc->getSize(); 136 (*_pES_ID_Inc).push_back(esIDInc); 137 } 138 else 139 { 140 ExpandableBaseClass* tempDesc = NULL; 141 PV_MP4_FF_NEW(fp->auditCB, ExpandableBaseClass, (fp, false), tempDesc); 142 if (!tempDesc->MP4Success()) 143 { 144 _success = false; 145 break; 146 } 147 uint32 totaltempDescSize = tempDesc->getSize(); 148 uint32 tempDescSize = 1; //for tag 149 tempDescSize += tempDesc->getSizeOfSizeField(); 150 uint32 remDescSize = (totaltempDescSize - tempDescSize); 151 if (totaltempDescSize > (uint32)delta) 152 { 153 _success = false; 154 break; 155 } 156 AtomUtils::seekFromCurrPos(fp, remDescSize); 157 delta -= totaltempDescSize; 158 159 PV_MP4_FF_DELETE(NULL, ExpandableBaseClass, tempDesc); 160 } 161 } 162 } 163 } 164 165 if (!_success) 166 _mp4ErrorCode = READ_INITIAL_OBJECT_DESCRIPTOR_FAILED; 167 } 168 else 169 { 170 _mp4ErrorCode = READ_INITIAL_OBJECT_DESCRIPTOR_FAILED; 171 } 172 173 } 174 175 // Destructor 176 InitialObjectDescriptor::~InitialObjectDescriptor() 177 { 178 uint32 i; 179 if (_pES_ID_Inc != NULL) 180 { 181 for (i = 0; i < _pES_ID_Inc->size(); i++) 182 PV_MP4_FF_DELETE(NULL, ES_ID_Inc, (*_pES_ID_Inc)[i]); 183 184 PV_MP4_FF_TEMPLATED_DELETE(NULL, ES_ID_IncVecType, Oscl_Vector, _pES_ID_Inc); 185 } 186 // EMPTY - The vector of ESIDs gets handled in the base class destructor 187 } 188 189 190
