1 /* 2 * Copyright (C) 2009 The Android Open Source Project 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 express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_RS_FILE_A3D_H 18 #define ANDROID_RS_FILE_A3D_H 19 20 #include "rsMesh.h" 21 22 #include <utils/String8.h> 23 #include "rsStream.h" 24 #include <stdio.h> 25 26 #define A3D_MAGIC_KEY "Android3D_ff" 27 28 // --------------------------------------------------------------------------- 29 namespace android { 30 class Asset; 31 32 namespace renderscript { 33 34 class FileA3D : public ObjectBase { 35 public: 36 FileA3D(Context *rsc); 37 ~FileA3D(); 38 39 uint32_t mMajorVersion; 40 uint32_t mMinorVersion; 41 uint64_t mIndexOffset; 42 uint64_t mStringTableOffset; 43 bool mUse64BitOffsets; 44 45 class A3DIndexEntry { 46 String8 mObjectName; 47 RsA3DClassID mType; 48 uint64_t mOffset; 49 uint64_t mLength; 50 ObjectBase *mRsObj; 51 public: 52 friend class FileA3D; getObjectName()53 const String8 &getObjectName() const { 54 return mObjectName; 55 } getType()56 RsA3DClassID getType() const { 57 return mType; 58 } 59 }; 60 61 bool load(FILE *f); 62 bool load(Asset *asset); 63 bool load(const void *data, size_t length); 64 65 size_t getNumIndexEntries() const; 66 const A3DIndexEntry* getIndexEntry(size_t index) const; 67 ObjectBase *initializeFromEntry(size_t index); 68 69 void appendToFile(Context *rsc, ObjectBase *obj); 70 bool writeFile(const char *filename); 71 72 // Currently files do not get serialized, 73 // but we need to inherit from ObjectBase for ref tracking serialize(Context * rsc,OStream * stream)74 virtual void serialize(Context *rsc, OStream *stream) const { 75 } getClassId()76 virtual RsA3DClassID getClassId() const { 77 return RS_A3D_CLASS_ID_UNKNOWN; 78 } 79 80 protected: 81 82 void parseHeader(IStream *headerStream); 83 84 const uint8_t * mData; 85 void * mAlloc; 86 uint64_t mDataSize; 87 Asset *mAsset; 88 89 OStream *mWriteStream; 90 Vector<A3DIndexEntry*> mWriteIndex; 91 92 IStream *mReadStream; 93 Vector<A3DIndexEntry*> mIndex; 94 }; 95 96 97 } 98 } 99 #endif //ANDROID_RS_FILE_A3D_H 100 101 102