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_BaseDescriptor Class 20 */ 21 22 #define IMPLEMENT_BaseDescriptor 23 24 #include "basedescriptor.h" 25 #include "atomutils.h" 26 27 28 // Constructor PVA_FF_BaseDescriptor(uint8 tag)29PVA_FF_BaseDescriptor::PVA_FF_BaseDescriptor(uint8 tag) 30 { 31 _sizeOfClass = 0; 32 _sizeOfSizeField = DEFAULT_DESCRIPTOR_SIZE; // 1 33 _tag = tag; 34 } 35 36 // Destructor ~PVA_FF_BaseDescriptor()37PVA_FF_BaseDescriptor::~PVA_FF_BaseDescriptor() 38 { 39 // Empty 40 } 41 42 // Rendering the PVA_FF_BaseDescriptor members in proper format (bitlengths, etc.) 43 // to an ostream 44 int renderBaseDescriptorMembers(MP4_AUTHOR_FF_FILE_IO_WRAP * fp) const45PVA_FF_BaseDescriptor::renderBaseDescriptorMembers(MP4_AUTHOR_FF_FILE_IO_WRAP *fp) const 46 { 47 PVA_FF_AtomUtils::render8(fp, getTag()); 48 int32 numBytesRendered = 1; 49 50 // Render attributes of the PVA_FF_BaseDescriptor class 51 int32 numBytes = renderSizeOfClassToFileStream(fp); 52 53 if (numBytes > 0) 54 { 55 numBytesRendered += numBytes; 56 } 57 else 58 { 59 numBytesRendered = 0; 60 } 61 62 return numBytesRendered; 63 } 64 65 66 67