AsyncAudioLADSPAPlugin_demo.cpp

An example of how to use the AudioLADSPAPlugin class

#include <iostream>
#include <AsyncCppApplication.h>
#include <AsyncAudioIO.h>
#include <AsyncAudioLADSPAPlugin.h>
#include <AsyncFdWatch.h>
 
int main(void)
{
  Async::CppApplication app;
 
  Async::AudioIO audio_io("alsa:default", 0);
  audio_io.open(Async::AudioIO::MODE_RDWR);
  Async::AudioSource* prev_src = &audio_io;
 
  std::string label("tap_pitch");
  Async::AudioLADSPAPlugin p1(label);
  if (!p1.initialize())
  {
    std::cout << "*** ERROR: Could not instantiate LADSPA plugin instance "
                 "with label " << label << std::endl;
    exit(1);
  }
  p1.setControl(0, 4);
  p1.print();
  prev_src->registerSink(&p1);
  prev_src = &p1;
 
  label = "tap_vibrato";
  Async::AudioLADSPAPlugin p2(label);
  if (!p2.initialize())
  {
    std::cout << "*** ERROR: Could not instantiate LADSPA plugin instance "
                 "with label " << label << std::endl;
    exit(1);
  }
  p2.setControl(0, 10);
  p2.setControl(1, 10);
  p2.print();
  prev_src->registerSink(&p2);
  prev_src = &p2;
 
  prev_src->registerSink(&audio_io);
 
  app.exec();
 
  return 0;
}