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 FullAtom Class */ 21 /* ------------------------------------------------------------------- */ 22 /*********************************************************************************/ 23 /* 24 This FullAtom Class is the base class for some Atoms in the MPEG-4 File 25 Format. 26 */ 27 28 29 #define IMPLEMENT_FullAtom 30 31 #include "fullatom.h" 32 #include "atomutils.h" 33 #include "atomdefs.h" 34 35 // Constructor 36 FullAtom::FullAtom(uint32 type, uint8 version, uint32 flags) 37 : Atom(type) 38 { 39 _version = version; 40 _flags = flags; 41 } 42 43 FullAtom::FullAtom(MP4_FF_FILE *fp) 44 : Atom(fp) 45 { 46 if (_success) 47 { 48 49 // Size and type set in Atom constructor 50 uint32 data; 51 52 if (!AtomUtils::read32(fp, data)) 53 { 54 _mp4ErrorCode = READ_FAILED; 55 _success = false; 56 return; 57 } 58 59 _version = (uint8)(data >> 24); 60 _flags = data & 0x00ffffff; 61 62 // Version 1 atoms supported 63 //we support version 0 & 1 64 if (_version) 65 { 66 if ((_type == MOVIE_HEADER_ATOM) || (_type == TRACK_HEADER_ATOM) || (_type == MEDIA_HEADER_ATOM)) 67 ; 68 else 69 { 70 _success = false; 71 _mp4ErrorCode = ATOM_VERSION_NOT_SUPPORTED; 72 } 73 } 74 } 75 } 76 77 FullAtom::FullAtom(MP4_FF_FILE *fp, uint32 size, uint32 type) 78 : Atom(fp, size, type) 79 { 80 if (_success) 81 { 82 // Size and type set in Atom constructor 83 uint32 data; 84 85 if (!AtomUtils::read32(fp, data)) 86 { 87 _mp4ErrorCode = READ_FAILED; 88 _success = false; 89 return; 90 } 91 92 _version = (uint8)(data >> 24); 93 _flags = data & 0x00ffffff; 94 95 // Version 1 atoms supported 96 //we support version 0 & 1 97 if (_version) 98 { 99 if ((_type == MOVIE_HEADER_ATOM) || (_type == TRACK_HEADER_ATOM) || (_type == MEDIA_HEADER_ATOM)) 100 ; 101 else 102 { 103 _success = false; 104 _mp4ErrorCode = ATOM_VERSION_NOT_SUPPORTED; 105 } 106 } 107 } 108 } 109 110 111 // Destructor 112 OSCL_EXPORT_REF FullAtom::~FullAtom() 113 { 114 // Empty 115 } 116 117 //Note: ARM linker can't find this symbol if it's declared "inline" 118 #ifndef __CC_ARM 119 inline 120 #endif 121 OSCL_EXPORT_REF uint32 122 FullAtom::getDefaultSize() const 123 { 124 return DEFAULT_FULL_ATOM_SIZE; 125 } 126 127 128
