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// ---------------------------------------------------------------------------
29namespace android {
30    class Asset;
31
32namespace renderscript {
33
34class FileA3D : public ObjectBase {
35public:
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;
53        const String8 &getObjectName() const {
54            return mObjectName;
55        }
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
74    virtual void serialize(Context *rsc, OStream *stream) const {
75    }
76    virtual RsA3DClassID getClassId() const {
77        return RS_A3D_CLASS_ID_UNKNOWN;
78    }
79
80protected:
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