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 23 class FrameSequence; 24 class Decoder; 25 class Stream; 26 27 struct 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 */ 42 class Registry { 43 public: 44 Registry(const RegistryEntry& entry); 45 46 static const RegistryEntry* Find(Stream* stream); 47 48 private: 49 RegistryEntry mImpl; 50 Registry* mNext; 51 }; 52 53 #endif // RASTERMILL_REGISTRY_H 54
