mirror of
https://github.com/mikeoliphant/neural-amp-modeler-lv2.git
synced 2026-05-06 19:50:11 +02:00
Mike Oliphant
103 lines
2.1 KiB
C++
103 lines
2.1 KiB
C++
#include <cfenv>
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#include <cstddef>
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#include <cstdint>
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#include <string>
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#include <memory>
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// LV2
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#include <lv2/core/lv2.h>
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#include <lv2/urid/urid.h>
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#include <lv2/worker/worker.h>
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#include "architecture.hpp"
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#include "nam_plugin.h"
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// LV2 Functions
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static LV2_Handle instantiate(const LV2_Descriptor*, double rate, const char*, const LV2_Feature* const* features)
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{
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try
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{
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auto nam = std::make_unique<NAM::Plugin>();
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if (nam->initialize(rate, features))
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{
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return static_cast<LV2_Handle>(nam.release());
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}
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return nullptr;
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}
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catch(const std::exception&)
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{
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return nullptr;
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}
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}
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static void connect_port(LV2_Handle instance, uint32_t port, void* data)
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{
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auto nam = static_cast<NAM::Plugin*>(instance);
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*(reinterpret_cast<void**>(&nam->ports)+port) = data;
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}
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static void activate(LV2_Handle) {}
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static void run(LV2_Handle instance, uint32_t n_samples)
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{
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#ifdef DISABLE_DENORMALS // Disable floating point denormals
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std::fenv_t fe_state;
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std::feholdexcept(&fe_state);
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disable_denormals();
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#endif
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static_cast<NAM::Plugin*>(instance)->process(n_samples);
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#ifdef DISABLE_DENORMALS // restore previous floating point state
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std::feupdateenv(&fe_state);
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#endif
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}
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static void deactivate(LV2_Handle) {}
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static void cleanup(LV2_Handle instance)
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{
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delete static_cast<NAM::Plugin*>(instance);
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}
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static const void* extension_data(const char* uri)
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{
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static const LV2_Options_Interface options = { NAM::Plugin::options_get, NAM::Plugin::options_set };
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static const LV2_State_Interface state = { NAM::Plugin::save, NAM::Plugin::restore};
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static const LV2_Worker_Interface worker = { NAM::Plugin::work, NAM::Plugin::work_response, NULL };
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if (!strcmp(uri, LV2_OPTIONS__interface))
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return &options;
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if (!strcmp(uri, LV2_STATE__interface))
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return &state;
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if (!strcmp(uri, LV2_WORKER__interface))
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return &worker;
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return NULL;
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}
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static const LV2_Descriptor descriptor =
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{
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"http://github.com/mikeoliphant/neural-amp-modeler-lv2",
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instantiate,
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connect_port,
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activate,
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run,
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deactivate,
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cleanup,
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extension_data
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};
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LV2_SYMBOL_EXPORT const LV2_Descriptor* lv2_descriptor(uint32_t index)
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{
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if (index == 0) {
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return &descriptor;
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}
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return nullptr;
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}
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