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 TrackReferenceAtom Class */ 21 /* ------------------------------------------------------------------- */ 22 /*********************************************************************************/ 23 /* 24 This TrackReferenceAtom Class provides a reference from the containing stream 25 to another stream in the MPEG-4 presentation. 26 */ 27 28 29 #ifndef TRACKREFERENCEATOM_H_INCLUDED 30 #define TRACKREFERENCEATOM_H_INCLUDED 31 32 #ifndef OSCL_FILE_IO_H_INCLUDED 33 #include "oscl_file_io.h" 34 #endif 35 36 #ifndef ATOM_H_INCLUDED 37 #include "atom.h" 38 #endif 39 40 #ifndef TRACKREFERENCETYPEATOM_H_INCLUDED 41 #include "trackreferencetypeatom.h" 42 #endif 43 44 class TrackReferenceAtom : public Atom 45 { 46 47 public: 48 TrackReferenceAtom(MP4_FF_FILE *fp, uint32 size, uint32 type); 49 virtual ~TrackReferenceAtom(); // Destructor 50 51 // Member get method 52 const TrackReferenceTypeAtom &getTrackReferenceTypeAtom() const 53 { 54 return *_ptrackReferenceTypeAtom; 55 } 56 57 // Assuming a hint track can reference only ONE track 58 uint32 getTrackReference() const 59 { 60 if (_ptrackReferenceTypeAtom != NULL) 61 { 62 return _ptrackReferenceTypeAtom->getTrackReferenceAt(0); 63 } 64 else 65 { 66 return 0; 67 } 68 } 69 70 private: 71 TrackReferenceTypeAtom *_ptrackReferenceTypeAtom; 72 73 }; 74 75 #endif // TRACKREFERENCEATOM_H_INCLUDED 76 77 78 79
