/* * 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 #include "jni.h" #include <stdint.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); bool (*acceptsBuffer)(); }; /** * 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