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extern/audaspace/include/fx/CallbackIIRFilterReader.h
- This file was added.
| /******************************************************************************* | |||||
| * Copyright 2009-2016 Jörg Müller | |||||
| * | |||||
| * 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. | |||||
| ******************************************************************************/ | |||||
| #pragma once | |||||
| /** | |||||
| * @file CallbackIIRFilterReader.h | |||||
| * @ingroup fx | |||||
| * The CallbackIIRFilterReader class. | |||||
| */ | |||||
| #include "fx/BaseIIRFilterReader.h" | |||||
| AUD_NAMESPACE_BEGIN | |||||
| class CallbackIIRFilterReader; | |||||
| /** | |||||
| * The doFilterIIR callback is executed when a new sample of a callback filter | |||||
| * should be calculated. For sample access the CallbackIIRFilterReader is | |||||
| * provided. Furthermore a user defined pointer is also handed to the callback. | |||||
| */ | |||||
| typedef sample_t (*doFilterIIR)(CallbackIIRFilterReader*, void*); | |||||
| /** | |||||
| * The endFilterIIR callback is called when the callback filter is not needed | |||||
| * anymore. The goal of this function should be to clean up the data behind the | |||||
| * user supplied pointer which is handed to the callback. | |||||
| */ | |||||
| typedef void (*endFilterIIR)(void*); | |||||
| /** | |||||
| * This class provides an interface for infinite impulse response filters via a | |||||
| * callback filter function. | |||||
| */ | |||||
| class AUD_API CallbackIIRFilterReader : public BaseIIRFilterReader | |||||
| { | |||||
| private: | |||||
| /** | |||||
| * Filter function. | |||||
| */ | |||||
| const doFilterIIR m_filter; | |||||
| /** | |||||
| * End filter function. | |||||
| */ | |||||
| const endFilterIIR m_endFilter; | |||||
| /** | |||||
| * Data pointer. | |||||
| */ | |||||
| void* m_data; | |||||
| // delete copy constructor and operator= | |||||
| CallbackIIRFilterReader(const CallbackIIRFilterReader&) = delete; | |||||
| CallbackIIRFilterReader& operator=(const CallbackIIRFilterReader&) = delete; | |||||
| public: | |||||
| /** | |||||
| * Creates a new callback IIR filter reader. | |||||
| * \param reader The reader to read from. | |||||
| * \param in The count of past input samples needed. | |||||
| * \param out The count of past output samples needed. | |||||
| * \param doFilter The filter callback. | |||||
| * \param endFilter The finishing callback. | |||||
| * \param data Data pointer for the callbacks. | |||||
| */ | |||||
| CallbackIIRFilterReader(std::shared_ptr<IReader> reader, int in, int out, doFilterIIR doFilter, endFilterIIR endFilter = 0, void* data = nullptr); | |||||
| virtual ~CallbackIIRFilterReader(); | |||||
| virtual sample_t filter(); | |||||
| }; | |||||
| AUD_NAMESPACE_END | |||||