1/*
2 * Copyright (C) 2013 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 RASTERMILL_REGISTRY_H
18#define RASTERMILL_REGISTRY_H
19
20#include "jni.h"
21#include <stdint.h>
22
23class FrameSequence;
24class Decoder;
25class Stream;
26
27struct RegistryEntry {
28    int requiredHeaderBytes;
29    bool (*checkHeader)(void* header, int header_size);
30    FrameSequence* (*createFrameSequence)(Stream* stream);
31    Decoder* (*createDecoder)(Stream* stream);
32    bool (*acceptsBuffer)();
33};
34
35/**
36 * Template class for registering subclasses that can produce instances of themselves given a
37 * DataStream pointer.
38 *
39 * The super class / root constructable type only needs to define a single static construction
40 * meathod that creates an instance by iterating through all factory methods.
41 */
42class Registry {
43public:
44    Registry(const RegistryEntry& entry);
45
46    static const RegistryEntry* Find(Stream* stream);
47
48private:
49    RegistryEntry mImpl;
50    Registry* mNext;
51};
52
53#endif // RASTERMILL_REGISTRY_H
54