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_SampleSizeAtom Class contains the sample count and a table giving the 20 size of each sample. 21 */ 22 23 24 #ifndef __SampleToChunkAtom_H__ 25 #define __SampleToChunkAtom_H__ 26 27 #define PV_ERROR -1 28 29 #include "fullatom.h" 30 31 32 class PVA_FF_SampleToChunkAtom : public PVA_FF_FullAtom 33 { 34 35 public: 36 PVA_FF_SampleToChunkAtom(uint32 mediaType, 37 uint32 fileAuthoringFlags); // Constructor 38 virtual ~PVA_FF_SampleToChunkAtom(); 39 40 // Member gets and sets getEntryCount()41 uint32 getEntryCount() const 42 { 43 return _entryCount; 44 } 45 46 // Returns whether or not the new sample is the start of a new chunk 47 bool nextSample(int32 index, uint32 size = 0, bool oChunkStart = false); 48 getNextChunkNumber()49 uint32 getNextChunkNumber() 50 { 51 return _currentChunkNumber++; 52 } 53 54 int32 getSampleDescriptionIndexAt(uint32 index); 55 56 // Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ostream 57 virtual bool renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp); 58 59 private: 60 // Adding to and getting first chunk, samples per chunk, and sample 61 // description index values 62 void addChunkEntry(uint32 chunk, uint32 samples, uint32 index); 63 void replaceLastChunkEntry(uint32 chunk, uint32 samples, uint32 index); 64 bool isNewChunk(uint32 size, int32 index); 65 66 virtual void recomputeSize(); 67 68 uint32 _entryCount; 69 Oscl_Vector<uint32, OsclMemAllocator>* _pfirstChunkVec; 70 Oscl_Vector<uint32, OsclMemAllocator>* _psamplesPerChunkVec; 71 Oscl_Vector<uint32, OsclMemAllocator>* _psampleDescriptionIndexVec; 72 73 int32 _mediaType; 74 75 uint32 _currentChunkNumSamples; 76 uint32 _currentChunkDataSize; // Ad up all sample sizes for the current chunk 77 uint32 _currentChunkNumber; 78 79 uint32 _maxNumSamplesPerChunk; 80 uint32 _maxChunkDataSize; 81 int32 _currIndex; 82 83 static const int32 DEFAULT_MAX_NUM_SAMPLES_PER_CHUNK; 84 static const int32 DEFAULT_MAX_CHUNK_DATA_SIZE; 85 86 bool _oInterLeaveMode; 87 }; 88 89 90 #endif 91 92