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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef RASTERMILL_REGISTRY_H
#define RASTERMILL_REGISTRY_H
class FrameSequence;
class Decoder;
class Stream;
struct RegistryEntry {
int requiredHeaderBytes;
bool (*checkHeader)(void* header, int header_size);
FrameSequence* (*createFrameSequence)(Stream* stream);
Decoder* (*createDecoder)(Stream* stream);
};
/**
* Template class for registering subclasses that can produce instances of themselves given a
* DataStream pointer.
*
* The super class / root constructable type only needs to define a single static construction
* meathod that creates an instance by iterating through all factory methods.
*/
class Registry {
public:
Registry(const RegistryEntry& entry);
static const RegistryEntry* Find(Stream* stream);
private:
RegistryEntry mImpl;
Registry* mNext;
};
#endif // RASTERMILL_REGISTRY_H