98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
/** @file
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* @author Edouard DUPIN
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* @author Fatima MARFOUQ
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* @copyright 2011, Edouard DUPIN, all right reserved
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* @license APACHE v2.0 (see license file)
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*/
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#ifndef __AUDIO_ALGO_RIVER_LMS_H__
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#define __AUDIO_ALGO_RIVER_LMS_H__
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#include <etk/types.h>
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#include <etk/chrono.h>
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#include <audio/format.h>
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#include <etk/memory.h>
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namespace audio {
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namespace algo {
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namespace river {
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class SupressorPrivate;
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/**
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* @brief Supressor is a simple Algo that remove data from the microphone when the speaker is active.
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*/
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class Supressor {
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public:
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/**
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* @brief Constructor
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*/
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Supressor();
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/**
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* @brief Destructor
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*/
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virtual ~Supressor();
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public:
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/**
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* @brief Reset algorithm
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*/
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virtual void reset();
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/**
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* @brief Initialize the Algorithm
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* @param[in] _nbChannel Number of channel in the stream.
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* @param[in] _sampleRate Sample rate.
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* @param[in] _format Input/output data format.
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*/
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virtual void init(int8_t _nbChannel, float _sampleRate, enum audio::format _format = audio::format_float);
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/**
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* @brief Get list of format suported in input.
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* @return list of supported format
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*/
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virtual std::vector<enum audio::format> getSupportedFormat();
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/**
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* @brief Get list of algorithm format suported. No format convertion.
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* @return list of supported format
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*/
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virtual std::vector<enum audio::format> getNativeSupportedFormat();
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/**
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* @brief Main input algo process.
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* @param[in,out] _output Output data.
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* @param[in] _input Input data.
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* @param[in] _inputFeedback Input feedback data (all time MONO).
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* @param[in] _nbChunk Number of chunk in the input buffer.
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* @param[in] _nbChannel Number of channel in the stream.
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*/
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virtual void process(void* _output, const void* _input, const void* _inputFeedback, size_t _nbChunk);
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protected:
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std11::shared_ptr<SupressorPrivate> m_private; // private data.
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public: // parameter area:
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/**
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* @brief Set the algo attaque time.
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* @param[in] _time Time of the attaque gain.
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*/
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virtual void setAttaqueTime(std11::chrono::microseconds _time);
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/**
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* @brief Set the algo release time.
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* @param[in] _time Time of the release gain.
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*/
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virtual void setReleaseTime(std11::chrono::microseconds _time);
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/**
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* @brief Set the minimum Gain.
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* @param[in] _gain dB gain to apply for minimum.
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*/
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virtual void setMinimumGain(float _gain);
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/**
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* @brief Set the threashold Gain.
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* @param[in] _gain dB gain to start removing data.
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*/
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virtual void setThreshold(float _gain);
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/**
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* @brief Set the delay befor releasing time.
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* @param[in] _time Time of the dalay release.
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*/
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virtual void setReleaseDelay(std11::chrono::microseconds _time);
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};
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}
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}
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}
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#endif
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