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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-units
* Created on: 06 дек. 2015 г.
*
* lsp-dsp-units is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-dsp-units is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-dsp-units. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_DSP_UNITS_DYNAMICS_UTIL_DELAY_HPP_
#define LSP_PLUG_IN_DSP_UNITS_DYNAMICS_UTIL_DELAY_HPP_
#include <lsp-plug.in/dsp-units/version.h>
#include <lsp-plug.in/dsp-units/iface/IStateDumper.h>
namespace lsp
{
namespace dspu
{
/**
* Delay processor
*/
class LSP_DSP_UNITS_PUBLIC Delay
{
private:
Delay & operator = (const Delay &);
Delay(const Delay &);
protected:
float *pBuffer;
size_t nHead;
size_t nTail;
size_t nDelay;
size_t nSize;
public:
explicit Delay();
~Delay();
/** Construct the processor, can be called
* when there is no possibility to explicitly call
* the constructor
*
*/
void construct();
/** Destroy delay
*
*/
void destroy();
public:
/** Initialize delay
*
* @param max_size maximum delay in samples
* @return status of operation
*/
bool init(size_t max_size);
/** Process data
*
* @param dst destination buffer
* @param src source buffer
* @param count number of samples to process
*/
void process(float *dst, const float *src, size_t count);
/** Process data
*
* @param dst destination buffer
* @param src source buffer
* @param gain gain to adjust
* @param count number of samples to process
*/
void process(float *dst, const float *src, float gain, size_t count);
/** Process data and apply gain
*
* @param dst destination buffer
* @param src source buffer
* @param gain gain buffer to apply at output
* @param count number of samples to process
*/
void process(float *dst, const float *src, const float *gain, size_t count);
/** Process data
*
* @param dst destination buffer
* @param src source buffer
* @param delay the final delay that will be set at the end of processing
* @param count number of samples to process
*/
void process_ramping(float *dst, const float *src, size_t delay, size_t count);
/** Process data
*
* @param dst destination buffer
* @param src source buffer
* @param gain the amount of gain to adjust to output
* @param delay the final delay that will be set at the end of processing
* @param count number of samples to process
*/
void process_ramping(float *dst, const float *src, float gain, size_t delay, size_t count);
/** Process one sample
*
* @param src sample to process
* @return output sample
*/
float process(float src);
/** Process one sample
*
* @param src sample to process
* @param gain gain to adjust
* @return output sample
*/
float process(float src, float gain);
/** Clear internal delay buffer
*
*/
void clear();
/** Set delay in samples
*
* @param delay delay in samples
*/
void set_delay(size_t delay);
/** Get delay in samples
*
* @return delay in samples
*/
inline size_t get_delay() const { return nDelay; };
/** Get delay in samples
*
* @return delay in samples
*/
inline size_t delay() const { return nDelay; };
/**
* Dump internal state
* @param v state dumper
*/
void dump(IStateDumper *v) const;
};
}
} /* namespace lsp */
#endif /* LSP_PLUG_IN_DSP_UNITS_DYNAMICS_UTIL_DELAY_HPP_ */
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