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 This PVA_FF_TrackReferenceAtom Class provides a reference from the containing stream 20 to another stream in the MPEG-4 presentation. 21 */ 22 23 24 #ifndef __TrackReferenceAtom_H__ 25 #define __TrackReferenceAtom_H__ 26 27 #include "atom.h" 28 #include "trackreferencetypeatom.h" 29 30 31 class PVA_FF_TrackReferenceAtom : public PVA_FF_Atom 32 { 33 34 public: 35 PVA_FF_TrackReferenceAtom(uint32 refType); // Constructor 36 virtual ~PVA_FF_TrackReferenceAtom(); // Destructor 37 38 // Member get method 39 PVA_FF_TrackReferenceTypeAtom &getTrackReferenceTypeAtom() 40 { 41 return *_ptrackReferenceTypeAtom; 42 } 43 PVA_FF_TrackReferenceTypeAtom *getTrackReferenceTypeAtomPtr() 44 { 45 return _ptrackReferenceTypeAtom; 46 } 47 48 // Add track reference - return index of reference in table - 1-based 49 int32 addTrackReference(uint32 ref) 50 { 51 return _ptrackReferenceTypeAtom->addTrackReference(ref); 52 } 53 54 // Assuming a hint track can reference only ONE track 55 uint32 getTrackReference() const 56 { 57 return _ptrackReferenceTypeAtom->getTrackReferenceAt(0); 58 } 59 60 // Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ostream 61 virtual bool renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp); 62 63 private: 64 virtual void recomputeSize(); 65 66 PVA_FF_TrackReferenceTypeAtom *_ptrackReferenceTypeAtom; 67 68 }; 69 70 71 72 #endif 73 74
