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 "rsStream.h"
23#include <stdio.h>
24
25#define A3D_MAGIC_KEY "Android3D_ff"
26
27// ---------------------------------------------------------------------------
28namespace android {
29    class Asset;
30
31namespace renderscript {
32
33class FileA3D : public ObjectBase {
34public:
35    FileA3D(Context *rsc);
36    ~FileA3D();
37
38    uint32_t mMajorVersion;
39    uint32_t mMinorVersion;
40    uint64_t mIndexOffset;
41    uint64_t mStringTableOffset;
42    bool mUse64BitOffsets;
43
44    class A3DIndexEntry {
45        const char *mObjectName;
46        RsA3DClassID mType;
47        uint64_t mOffset;
48        uint64_t mLength;
49        ObjectBase *mRsObj;
50    public:
51        friend class FileA3D;
52        const char *getObjectName() const {
53            return mObjectName;
54        }
55        RsA3DClassID getType() const {
56            return mType;
57        }
58
59        ~A3DIndexEntry();
60    };
61
62    bool load(FILE *f);
63    bool load(Asset *asset);
64    bool load(const void *data, size_t length);
65
66    size_t getNumIndexEntries() const;
67    const A3DIndexEntry* getIndexEntry(size_t index) const;
68    ObjectBase *initializeFromEntry(size_t index);
69
70    void appendToFile(Context *rsc, ObjectBase *obj);
71    bool writeFile(const char *filename);
72
73    // Currently files do not get serialized,
74    // but we need to inherit from ObjectBase for ref tracking
75    virtual void serialize(Context *rsc, OStream *stream) const {
76    }
77    virtual RsA3DClassID getClassId() const {
78        return RS_A3D_CLASS_ID_UNKNOWN;
79    }
80
81protected:
82
83    void parseHeader(IStream *headerStream);
84
85    const uint8_t * mData;
86    void * mAlloc;
87    uint64_t mDataSize;
88    Asset *mAsset;
89
90    OStream *mWriteStream;
91    Vector<A3DIndexEntry*> mWriteIndex;
92
93    IStream *mReadStream;
94    Vector<A3DIndexEntry*> mIndex;
95};
96
97
98}
99}
100#endif //ANDROID_RS_FILE_A3D_H
101
102
103