986267300b
Deleting the old internal audaspace. Major changes from there are: - The whole library was refactored to use C++11. - Many stability and performance improvements. - Major Python API refactor: - Most requested: Play self generated sounds using numpy arrays. - For games: Sound list, random sounds and dynamic music. - Writing sounds to files. - Sequencing API. - Opening sound devices, eg. Jack. - Ability to choose different OpenAL devices in the user settings.
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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/**
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* @file Threshold.h
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* @ingroup fx
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* The Threshold class.
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*/
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#include "fx/Effect.h"
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AUD_NAMESPACE_BEGIN
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class CallbackIIRFilterReader;
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/**
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* This sound Transforms any signal to a square signal by thresholding.
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*/
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class AUD_API Threshold : public Effect
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{
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private:
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/**
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* The threshold.
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*/
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const float m_threshold;
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// delete copy constructor and operator=
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Threshold(const Threshold&) = delete;
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Threshold& operator=(const Threshold&) = delete;
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public:
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/**
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* Creates a new threshold sound.
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* \param sound The input sound.
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* \param threshold The threshold.
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*/
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Threshold(std::shared_ptr<ISound> sound, float threshold = 0.0f);
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/**
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* Returns the threshold.
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*/
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float getThreshold() const;
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virtual std::shared_ptr<IReader> createReader();
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/**
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* The thresholdFilter function implements the doFilterIIR callback
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* for the callback IIR filter.
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* @param reader The CallbackIIRFilterReader that executes the callback.
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* @param threshold The threshold value.
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* @return The filtered sample.
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*/
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static sample_t AUD_LOCAL thresholdFilter(CallbackIIRFilterReader* reader, float* threshold);
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/**
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* The endThresholdFilter function implements the endFilterIIR callback
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* for the callback IIR filter.
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* @param threshold The threshold value.
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*/
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static void AUD_LOCAL endThresholdFilter(float* threshold);
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};
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AUD_NAMESPACE_END
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