AudioEngineInfoForm.cpp

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * This program 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program. If not, see https://www.gnu.org/licenses
 *
 */
 
#include "AudioEngineInfoForm.h"
 
#include <QtGui>
#include <QtWidgets>
 
 
#include "HydrogenApp.h"
 
#include <core/Basics/Pattern.h>
#include <core/Basics/PatternList.h>
#include <core/Preferences/Preferences.h>
#include <core/Hydrogen.h>
#include <core/IO/MidiInput.h>
#include <core/IO/AudioOutput.h>
#include <core/Sampler/Sampler.h>
#include <core/AudioEngine/AudioEngine.h>
#include <core/AudioEngine/TransportPosition.h>
using namespace H2Core;
 
AudioEngineInfoForm::AudioEngineInfoForm(QWidget* parent)
 : QWidget( parent )
 , Object()
{
        setupUi( this );
        adjustSize();
        setFixedSize( width(), height() );      // not resizable
 
        setWindowTitle( tr( "Audio Engine Info" ) );
 
        updateInfo();
 
        m_pTimer = new QTimer(this);
        connect(m_pTimer, SIGNAL(timeout()), this, SLOT(updateInfo()));
 
        HydrogenApp::get_instance()->addEventListener( this );
        updateAudioEngineState();
}
 
 

AudioEngineInfoForm::~AudioEngineInfoForm()
{
}
 

void AudioEngineInfoForm::showEvent ( QShowEvent* )
{
        updateInfo();
        m_pTimer->start(200);
}
 

void AudioEngineInfoForm::hideEvent ( QHideEvent* )
{
        m_pTimer->stop();
}
 
 
void AudioEngineInfoForm::updateInfo()
{
        Hydrogen *pHydrogen = Hydrogen::get_instance();
        AudioEngine* pAudioEngine = pHydrogen->getAudioEngine();;
        std::shared_ptr<Song> pSong = pHydrogen->getSong();
 
        // Song position
        QString sColumn = "N/A";
        if ( pAudioEngine->getTransportPosition()->getColumn() != -1 ) {
                sColumn = QString::number( pAudioEngine->getTransportPosition()->getColumn() );
        }
        m_pSongPositionLbl->setText( sColumn );
 
 
        // Audio engine Playing notes
        char tmp[100];
 
        // Process time
        int perc = 0;
        if ( pAudioEngine->getMaxProcessTime() != 0.0 ) {
                perc= (int)( pAudioEngine->getProcessTime() / ( pAudioEngine->getMaxProcessTime() / 100.0 ) );
        }
        sprintf(tmp, "%#.2f / %#.2f  (%d%%)", pAudioEngine->getProcessTime(), pAudioEngine->getMaxProcessTime(), perc );
        processTimeLbl->setText(tmp);
 
        // Song state
        if (pSong == nullptr) {
                songStateLbl->setText( "NULL song" );
        }
        else {
                if (pSong->getIsModified()) {
                        songStateLbl->setText( "Modified" );
                }
                else {
                        songStateLbl->setText( "Saved" );
                }
        }
 
        // tick number
        sprintf(tmp, "%03d", (int)pAudioEngine->getTransportPosition()->getPatternTickPosition() );
        nTicksLbl->setText(tmp);
 
 
 
        // Audio driver info
        AudioOutput *driver = pHydrogen->getAudioOutput();
        if (driver) {
                QString audioDriverName = driver->class_name();
                driverLbl->setText(audioDriverName);
 
                // Audio driver buffer size
                sprintf(tmp, "%d", driver->getBufferSize());
                bufferSizeLbl->setText(QString(tmp));
 
                // Audio latency estimate
                latencyLbl->setText( QString( "%1 frames" ).arg( driver->getLatency() ) );
 
                // Audio driver sampleRate
                sprintf(tmp, "%d", driver->getSampleRate());
                sampleRateLbl->setText(QString(tmp));
 
                // Number of frames
                sprintf(tmp, "%d", static_cast<int>( pAudioEngine->getTransportPosition()->getFrame() ) );
                nFramesLbl->setText(tmp);
        }
        else {
                driverLbl->setText( "NULL driver" );
                bufferSizeLbl->setText( "N/A" );
                latencyLbl->setText( "N/A" );
                sampleRateLbl->setText( "N/A" );
                nFramesLbl->setText( "N/A" );
        }
        nRealtimeFramesLbl->setText( QString( "%1" ).arg( pAudioEngine->getRealtimeFrame() ) );
 
 
        // Midi driver info
        MidiInput *pMidiDriver = pHydrogen->getMidiInput();
        if ( pMidiDriver != nullptr ) {
                midiDriverName->setText( pMidiDriver->class_name() );
        }
        else {
                midiDriverName->setText("No MIDI driver support");
        }
 
        m_pMidiDeviceName->setText( Preferences::get_instance()->m_sMidiPortName );
 
 
        int nSelectedPatternNumber = pHydrogen->getSelectedPatternNumber();
        if (nSelectedPatternNumber == -1) {
                selectedPatLbl->setText( "N/A");
        }
        else {
                selectedPatLbl->setText( QString("%1").arg(nSelectedPatternNumber) );
        }
 
        int nSelectedInstrumentNumber = pHydrogen->getSelectedInstrumentNumber();
        if (nSelectedInstrumentNumber == -1) {
                m_pSelectedInstrLbl->setText( "N/A" );
        }
        else {
                m_pSelectedInstrLbl->setText( QString("%1").arg(nSelectedInstrumentNumber) );
        }
 
        auto pPatternList = pAudioEngine->getPlayingPatterns();
        if ( pPatternList != nullptr ) {
                currentPatternLbl->setText( QString::number( pPatternList->size() ) );
        } else {
                currentPatternLbl->setText( "N/A" );
        }
 
        // SAMPLER
        Sampler *pSampler = pAudioEngine->getSampler();
        sampler_playingNotesLbl->setText(QString( "%1 / %2" ).arg(pSampler->getPlayingNotesNumber()).arg(Preferences::get_instance()->m_nMaxNotes));
 
        // Synth
        Synth *pSynth = pAudioEngine->getSynth();
        synth_playingNotesLbl->setText( QString( "%1" ).arg( pSynth->getPlayingNotesNumber() ) );
}
 
 
 
 
 

void AudioEngineInfoForm::updateAudioEngineState() {
        // Audio Engine state
        QString stateTxt;
        switch ( H2Core::Hydrogen::get_instance()->getAudioEngine()->getState() ) {
        case H2Core::AudioEngine::State::Uninitialized:
                stateTxt = "Uninitialized";
                break;
 
        case H2Core::AudioEngine::State::Initialized:
                stateTxt = "Initialized";
                break;
 
        case H2Core::AudioEngine::State::Prepared:
                stateTxt = "Prepared";
                break;
 
        case H2Core::AudioEngine::State::Ready:
                stateTxt = "Ready";
                break;
 
        case H2Core::AudioEngine::State::Playing:
                stateTxt = "Playing";
                break;
 
        default:
                stateTxt = "Unknown!?";
                break;
        }
        engineStateLbl->setText(stateTxt);
}
 
 
void AudioEngineInfoForm::stateChangedEvent( H2Core::AudioEngine::State state )
{
        UNUSED( state );
        updateAudioEngineState();
}
 
 
void AudioEngineInfoForm::playingPatternsChangedEvent()
{
        updateAudioEngineState();
}
 
void AudioEngineInfoForm::updateSongEvent( int nValue )
{
        // A new song got loaded
        if ( nValue == 0 ) {
                updateAudioEngineState();
        }
}