annotate host/host.cpp @ 1:4342352b8ef3

* run more than one plugin, etc

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

#include <vamp-sdk/PluginHostAdapter.h>

#include "audioio/BufferingAudioCallbackRecordTarget.h"
#include "audioio/AudioRecordSourceFactory.h"

#include <iostream>
#include <sndfile.h>

#include "system/System.h"

#include "Processor.h"

#include <cmath>
#include <cassert>

#include <QApplication>
#include <QFont>
#include <QPushButton>

using std::cout;
using std::cerr;
using std::endl;
using std::string;
using std::vector;

static bool loadPlugin(Processor &processor, QString id);


int main(int argc, char **argv)
{
    QApplication application(argc, argv);

    QFont fn = application.font();
    fn.setPointSize(fn.pointSize() + 3);
    application.setFont(fn);

    QPushButton *button = new QPushButton("Quit");
    QObject::connect(button, SIGNAL(clicked()), 
                     &application, SLOT(closeAllWindows()));
    
    BufferingAudioCallbackRecordTarget *target =
        new BufferingAudioCallbackRecordTarget();

    AudioCallbackRecordSource *source =
        AudioRecordSourceFactory::createCallbackRecordSource(target);
    if (!source) {
        std::cerr << "ERROR: Failed to create audio record source" << std::endl;
        return 1;
    }

    Processor processor(target);

    int count = 0;
    if (loadPlugin(processor, "vamp:vamp-aubio:aubiotempo")) ++count;
    if (loadPlugin(processor, "vamp:vamp-example-plugins:percussiononsets")) ++count;
    if (loadPlugin(processor, "vamp:qm-vamp-plugins:qm-tempotracker")) ++count;
    if (loadPlugin(processor, "vamp:qm-vamp-plugins:qm-chromagram")) ++count;
    if (loadPlugin(processor, "vamp:vamp-example-plugins:zerocrossing")) ++count;

    std::cerr << count << " plugin(s) loaded" << std::endl;

    button->show();
    processor.start();

    application.exec();
}

bool loadPlugin(Processor &processor, QString id)
{
    int n = processor.addPlugin(id);
    if (n) {
        std::cerr << "Plugin \"" << id.toStdString() << "\" successfully loaded (index " << n << ")" << std::endl;
        return true;
    } else {
        std::cerr << "Failed to load plugin \"" << id.toStdString() << "\"" << std::endl;
        return false;
    }
}