146 lines
4.1 KiB
C++
146 lines
4.1 KiB
C++
#include "trackdeck.h"
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#include "ui_trackdeck.h"
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#include <QAbstractEventDispatcher>
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#include <QDragEnterEvent>
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#include <QDragLeaveEvent>
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#include <QDropEvent>
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#include <QMimeData>
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#include <QTextStream>
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#include <QUrl>
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#include <QFileInfo>
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#include <QDebug>
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#include "audiodecoder.h"
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TrackDeck::TrackDeck(QWidget *parent) :
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QWidget{parent},
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m_ui{std::make_unique<Ui::TrackDeck>()}
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{
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m_ui->setupUi(this);
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m_ui->progressBar->hide();
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connect(m_ui->pushButtonPlay, &QAbstractButton::pressed, &m_player, &AudioPlayer::togglePlaying);
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connect(m_ui->pushButtonStop, &QAbstractButton::pressed, &m_player, &AudioPlayer::stop);
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connect(m_ui->verticalSliderVolume, &QAbstractSlider::valueChanged, &m_player, [&player=m_player](int value){ player.setVolume(float(value)/100.f); });
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connect(m_ui->horizontalSliderSpeed, &QAbstractSlider::valueChanged, &m_player, [&player=m_player](int value){ player.setSpeed(float(value)/100.f); });
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connect(m_ui->previewWidget, &PreviewWidget::positionSelected, &m_player, &AudioPlayer::setPosition);
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connect(&m_player, &AudioPlayer::positionChanged, m_ui->previewWidget, &PreviewWidget::setPosition);
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connect(&m_player, &AudioPlayer::positionChanged, m_ui->scratchWidget, &ScratchWidget::setPosition);
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connect(&m_player, &AudioPlayer::playingChanged, m_ui->pushButtonPlay, [&button=*m_ui->pushButtonPlay](bool playing){ button.setText(playing ? tr("▮▮") : tr("▶")); });
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}
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TrackDeck::~TrackDeck() = default;
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void TrackDeck::loadTrack(const QString &filename)
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{
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m_filename = filename;
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emit startDecoding(filename);
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m_ui->progressBar->show();
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m_ui->progressBar->setValue(0);
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}
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void TrackDeck::injectDecodingThread(QThread &thread)
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{
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QMetaObject::invokeMethod(QAbstractEventDispatcher::instance(&thread), [this](){
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m_decoder = std::make_unique<AudioDecoder>();
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connect(this, &TrackDeck::startDecoding, m_decoder.get(), &AudioDecoder::startDecodingFilename);
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connect(m_decoder.get(), &AudioDecoder::progress, this, &TrackDeck::decodingProgress);
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connect(m_decoder.get(), &AudioDecoder::decodingFinished, this, &TrackDeck::decodingFinished);
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if (!m_filename.isEmpty())
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m_decoder->startDecodingFilename(m_filename);
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});
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}
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void TrackDeck::writeSamples(frame_t *begin, frame_t *end)
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{
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m_player.writeSamples(begin, end);
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}
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void TrackDeck::dragEnterEvent(QDragEnterEvent *event)
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{
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if (!event->mimeData()->hasFormat("text/uri-list"))
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return;
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auto data = event->mimeData()->data("text/uri-list");
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QTextStream textStream(data, QIODevice::ReadOnly | QIODevice::Text);
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if (textStream.atEnd())
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return;
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const QUrl url(textStream.readLine());
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if (!url.isLocalFile())
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return;
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const QFileInfo fileInfo(url.toLocalFile());
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if (!fileInfo.exists())
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return;
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if (!fileInfo.isFile())
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return;
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event->acceptProposedAction();
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}
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void TrackDeck::dragLeaveEvent(QDragLeaveEvent *event)
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{
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Q_UNUSED(event)
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}
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void TrackDeck::dropEvent(QDropEvent *event)
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{
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if (!event->mimeData()->hasFormat("text/uri-list"))
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{
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qWarning() << "wrong type";
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return;
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}
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auto data = event->mimeData()->data("text/uri-list");
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QTextStream textStream(data, QIODevice::ReadOnly | QIODevice::Text);
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if (textStream.atEnd())
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{
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qWarning() << "no lines";
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return;
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}
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const QUrl url(textStream.readLine());
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if (!url.isLocalFile())
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{
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qWarning() << "isnt local file";
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return;
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}
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const QFileInfo fileInfo(url.toLocalFile());
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if (!fileInfo.exists())
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{
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qWarning() << "doesnt exist";
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return;
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}
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if (!fileInfo.isFile())
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{
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qWarning() << "isnt file";
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return;
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}
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loadTrack(url.toLocalFile());
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}
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void TrackDeck::decodingProgress(int progress, int total)
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{
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m_ui->progressBar->setMaximum(total);
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m_ui->progressBar->setValue(progress);
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}
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void TrackDeck::decodingFinished(const QAudioBuffer &buffer)
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{
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m_player.setBuffer(buffer);
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m_ui->previewWidget->setBuffer(buffer);
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m_ui->scratchWidget->setBuffer(buffer);
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m_ui->progressBar->hide();
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}
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