brickworks/examples/fxpp_pan/src/impl.cpp
2024-03-19 13:54:26 +01:00

85 lines
2.3 KiB
C++

/*
* Brickworks
*
* Copyright (C) 2023, 2024 Orastron Srl unipersonale
*
* Brickworks is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Brickworks 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Brickworks. If not, see <http://www.gnu.org/licenses/>.
*
* File author: Stefano D'Angelo
*/
#include "impl.h"
#include "common.h"
#include <bw_pan.h>
#include <bw_ppm.h>
using namespace Brickworks;
class Engine {
public:
Pan<1> pan;
PPM<2> ppm;
};
extern "C" {
impl impl_new(void) {
Engine *instance = new Engine();
return reinterpret_cast<impl>(instance);
}
void impl_free(impl handle) {
Engine *instance = reinterpret_cast<Engine *>(handle);
delete instance;
}
void impl_set_sample_rate(impl handle, float sample_rate) {
Engine *instance = reinterpret_cast<Engine *>(handle);
instance->pan.setSampleRate(sample_rate);
instance->ppm.setSampleRate(sample_rate);
}
void impl_reset(impl handle) {
Engine *instance = reinterpret_cast<Engine *>(handle);
instance->pan.reset();
instance->ppm.reset();
}
void impl_set_parameter(impl handle, size_t index, float value) {
(void)index;
Engine *instance = reinterpret_cast<Engine *>(handle);
instance->pan.setPan(0.01f * value);
}
float impl_get_parameter(impl handle, size_t index) {
Engine *instance = reinterpret_cast<Engine *>(handle);
float v = instance->ppm.getYZ1(index - 1);
return v < -60.f ? -60.f : (v > 0.f ? 0.f : v);
}
void impl_process(impl handle, const float **inputs, float **outputs, size_t n_samples) {
Engine *instance = reinterpret_cast<Engine *>(handle);
#ifdef WASM
float *yL[1] = {outputs[0]};
float *yR[1] = {outputs[1]};
instance->pan.process(inputs, yL, yR, n_samples);
instance->ppm.process(outputs, nullptr, n_samples);
#else
instance->pan.process({inputs[0]}, {outputs[0]}, {outputs[1]}, n_samples);
instance->ppm.process({outputs[0], outputs[1]}, {nullptr, nullptr}, n_samples);
#endif
}
}