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/*
* Copyright (C) 2021 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2021 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugin-fw
* Created on: 1 нояб. 2021 г.
*
* lsp-plugin-fw 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-plugin-fw 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-plugin-fw. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_PLUG_FW_WRAP_LADSPA_PORTS_H_
#define LSP_PLUG_IN_PLUG_FW_WRAP_LADSPA_PORTS_H_
#include <lsp-plug.in/plug-fw/version.h>
#include <lsp-plug.in/plug-fw/meta/types.h>
#include <lsp-plug.in/plug-fw/meta/func.h>
#include <lsp-plug.in/plug-fw/plug.h>
#include <lsp-plug.in/stdlib/math.h>
#include <lsp-plug.in/dsp/dsp.h>
#define LADSPA_MAX_BLOCK_LENGTH 8192
namespace lsp
{
namespace ladspa
{
// Specify port classes
class Port: public plug::IPort
{
protected:
float *pData;
public:
explicit Port(const meta::port_t *meta) : IPort(meta), pData(NULL) {};
virtual ~Port()
{
pData = NULL;
}
public:
virtual void bind(void *data)
{
pData = reinterpret_cast<float *>(data);
}
};
class AudioPort: public Port
{
protected:
float *pSanitized;
float *pBuffer;
public:
explicit AudioPort(const meta::port_t *meta) : Port(meta)
{
pBuffer = NULL;
pSanitized = NULL;
if (meta::is_in_port(meta))
{
pSanitized = reinterpret_cast<float *>(::malloc(sizeof(float) * LADSPA_MAX_BLOCK_LENGTH));
if (pSanitized != NULL)
dsp::fill_zero(pSanitized, LADSPA_MAX_BLOCK_LENGTH);
else
lsp_warn("Failed to allocate sanitize buffer for port %s", pMetadata->id);
}
}
virtual ~AudioPort()
{
if (pSanitized != NULL)
{
::free(pSanitized);
pSanitized = NULL;
}
};
public:
virtual void *buffer() { return pBuffer; };
// Should be always called at least once after bind() and before process() call
void sanitize_before(size_t off, size_t samples)
{
pBuffer = &pData[off];
// Sanitize plugin's input if possible
if (pSanitized != NULL)
{
dsp::sanitize2(pSanitized, pBuffer, samples);
pBuffer = pSanitized;
}
}
// Should be always called at least once after bind() and after process() call
void sanitize_after(size_t off, size_t samples)
{
// Sanitize plugin's output
if ((pBuffer != NULL) && (meta::is_out_port(pMetadata)))
dsp::sanitize1(pBuffer, samples); // Sanitize output of plugin
// Clear the buffer pointer
pBuffer = NULL;
}
};
class InputPort: public Port
{
private:
float fPrev;
float fValue;
public:
explicit InputPort(const meta::port_t *meta) : Port(meta)
{
fPrev = meta->start;
fValue = meta->start;
}
virtual ~InputPort()
{
fPrev = 0.0f;
fValue = 0.0f;
}
public:
virtual float value() { return fValue; }
virtual bool pre_process(size_t samples)
{
if (pData == NULL)
return false;
fValue = limit_value(pMetadata, *pData);
return fPrev != fValue;
}
virtual void post_process(size_t samples) { fPrev = fValue; };
};
class OutputPort: public Port
{
protected:
float fValue;
public:
explicit OutputPort(const meta::port_t *meta) : Port(meta)
{
fValue = meta->start;
}
virtual ~OutputPort()
{
fValue = 0.0f;
};
public:
virtual float value()
{
return fValue;
}
virtual void set_value(float value)
{
value = limit_value(pMetadata, value);
if (pMetadata->flags & meta::F_PEAK)
{
if (fabs(fValue) < fabs(value))
fValue = value;
}
else
fValue = value;
};
virtual void bind(void *data) { pData = reinterpret_cast<float *>(data); };
virtual bool pre_process(size_t samples)
{
if (pMetadata->flags & meta::F_PEAK)
fValue = 0.0f;
return false;
}
virtual void post_process(size_t samples)
{
if (pData != NULL)
*pData = fValue;
if (pMetadata->flags & meta::F_PEAK)
fValue = 0.0f;
}
};
} /* namespace ladspa */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_PLUG_FW_WRAP_LADSPA_PORTS_H_ */
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