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_Renderable Class is the base class for ALL other components of the MP4 20 file format - including Atoms, Descriptors, and Commands. This class provides 21 the renderToFileStream(...) and readFromFileStream(...) pure virtual methods. 22 */ 23 24 25 #ifndef __Renderable_H__ 26 #define __Renderable_H__ 27 28 #include "atomutils.h" 29 30 class PVA_FF_Renderable 31 { 32 33 public: 34 virtual ~PVA_FF_Renderable() {} 35 36 // Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ofstream 37 // Each subclass will override this method to render its own contents. 38 virtual bool renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp) = 0; 39 40 virtual uint32 getSize() const = 0; 41 42 virtual MP4_AUTHOR_FF_FILE_IO_WRAP* dump(MP4_AUTHOR_FF_FILE_IO_WRAP *fp) 43 { 44 return fp; 45 } 46 47 }; 48 49 class PVA_FF_BufferHolder : public PVA_FF_Renderable 50 { 51 52 public: 53 PVA_FF_BufferHolder(uint8* buf, int32 size) 54 { 55 _dataBuffer = NULL; 56 _dataSize = 0; 57 58 if (size > 0) 59 { 60 _dataBuffer = (uint8*)(oscl_malloc(sizeof(uint8) * size)); 61 oscl_memcpy(_dataBuffer, buf, size); 62 _dataSize = size; 63 } 64 }; 65 66 virtual ~PVA_FF_BufferHolder() 67 { 68 if (_dataBuffer != NULL) 69 { 70 oscl_free(_dataBuffer); 71 } 72 } 73 74 // Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ofstream 75 // Each subclass will override this method to render its own contents. 76 virtual bool renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp) 77 { 78 if (_dataBuffer != NULL) 79 { 80 if (!PVA_FF_AtomUtils::renderByteData(fp, (uint32)_dataSize, _dataBuffer)) 81 { 82 return false; 83 } 84 } 85 return true; 86 }; 87 88 virtual uint32 getSize() const 89 { 90 return _dataSize; 91 } 92 93 private: 94 uint8* _dataBuffer; 95 int32 _dataSize; 96 97 }; 98 99 100 #endif 101 102
