Chris@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     Sonic Visualiser
Chris@0:     An audio file viewer and annotation editor.
Chris@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@77:     This file copyright 2006 Chris Cannam and QMUL.
Chris@0:     
Chris@0:     This program is free software; you can redistribute it and/or
Chris@0:     modify it under the terms of the GNU General Public License as
Chris@0:     published by the Free Software Foundation; either version 2 of the
Chris@0:     License, or (at your option) any later version.  See the file
Chris@0:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "MainWindow.h"
Chris@0: 
Chris@1: #include "system/System.h"
Chris@1: #include "system/Init.h"
Chris@0: #include "base/TempDirectory.h"
Chris@0: #include "base/PropertyContainer.h"
Chris@0: #include "base/Preferences.h"
Chris@120: #include "widgets/TipDialog.h"
Chris@0: 
Chris@0: #include <QMetaType>
Chris@0: #include <QApplication>
Chris@0: #include <QDesktopWidget>
Chris@0: #include <QMessageBox>
Chris@0: #include <QTranslator>
Chris@0: #include <QLocale>
Chris@5: #include <QSettings>
Chris@7: #include <QIcon>
Chris@11: #include <QSessionManager>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: #include <signal.h>
Chris@0: 
Chris@127: /*! \mainpage Sonic Visualiser
Chris@127: 
Chris@127: \section interesting Summary of interesting classes
Chris@127: 
Chris@127:  - Data models: Model and subclasses, e.g. WaveFileModel
Chris@127: 
Chris@127:  - Graphical layers: Layer and subclasses, displayed on View and its
Chris@127:  subclass widgets.
Chris@127: 
Chris@127:  - Main window class, document class, and file parser: MainWindow,
Chris@127:  Document, SVFileReader
Chris@127: 
Chris@127:  - Turning one model (e.g. audio) into another (e.g. more audio, or a
Chris@127:  curve extracted from it): Transform and subclasses
Chris@127: 
Chris@127:  - Creating the plugins used by transforms: RealTimePluginFactory,
Chris@129:  FeatureExtractionPluginFactory.  See also the API documentation for
Chris@129:  Vamp feature extraction plugins at
Chris@129:  http://www.vamp-plugins.org/code-doc/.
Chris@127: 
Chris@127:  - File reading and writing code: AudioFileReader and subclasses,
Chris@127:  WavFileWriter, DataFileReader, SVFileReader
Chris@127: 
Chris@127:  - FFT calculation and cacheing: FFTModel, FFTDataServer
Chris@127: 
Chris@127:  - Widgets that show groups of editable properties: PropertyBox for
Chris@127:  layer properties (contained in a PropertyStack), PluginParameterBox
Chris@127:  for plugins (contained in a PluginParameterDialog)
Chris@127: 
Chris@127:  - Audio playback: AudioCallbackPlaySource and subclasses,
Chris@127:  AudioCallbackPlayTarget and subclasses, AudioGenerator
Chris@127: 
Chris@127: \section model Data sources: the Model hierarchy
Chris@127: 
Chris@127:    A Model is something containing, or knowing how to obtain, data.
Chris@127: 
Chris@127:    For example, WaveFileModel is a model that knows how to get data
Chris@127:    from an audio file; SparseTimeValueModel is a model containing
Chris@127:    editable "curve" data.
Chris@127: 
Chris@127:    Models typically subclass one of a number of abstract subclasses of
Chris@127:    Model.  For example, WaveFileModel subclasses DenseTimeValueModel,
Chris@127:    which describes an interface for models that have a value at each
Chris@127:    time point for a given sampling resolution.  (Note that
Chris@127:    WaveFileModel does not actually read the files itself: it uses
Chris@127:    AudioFileReader classes for that.  It just makes data from the
Chris@127:    files available in a Model.)  SparseTimeValueModel uses the
Chris@127:    SparseModel template class, which provides most of the
Chris@127:    implementation for models that contain a series of points of some
Chris@127:    sort -- also used by NoteModel, TextModel, and
Chris@127:    SparseOneDimensionalModel.
Chris@127: 
Chris@127:    Everything that goes on the screen originates from a model, via a
Chris@127:    layer (see below).  The models are contained in a Document object.
Chris@127:    There is no containment hierarchy or ordering of models in the
Chris@127:    document.  One model is the main model, which defines the sample
Chris@127:    rate for playback.
Chris@127: 
Chris@127:    A model may also be marked as a "derived" model, which means it was
Chris@127:    generated from another model using some transform (feature
Chris@127:    extraction or effect plugin, etc) -- the idea being that they can
Chris@127:    be re-generated using the same transform if a new source model is
Chris@127:    loaded.
Chris@127: 
Chris@127: \section layer Things that can display data: the Layer hierarchy
Chris@127: 
Chris@127:    A Layer is something that knows how to draw parts of a model onto a
Chris@127:    timeline.
Chris@127: 
Chris@127:    For example, WaveformLayer is a layer which draws waveforms, based
Chris@127:    on WaveFileModel; TimeValueLayer draws curves, based on
Chris@127:    SparseTimeValueModel; SpectrogramLayer draws spectrograms, based on
Chris@127:    WaveFileModel (via FFTModel).
Chris@127: 
Chris@127:    The most basic functions of a layer are: to draw itself onto a
Chris@127:    Pane, against a timeline on the x axis; and to permit user
Chris@127:    interaction.  If you were thinking of adding the capability to
Chris@127:    display a new sort of something, then you would want to add a new
Chris@127:    layer type.  (You may also need a new model type, depending on
Chris@127:    whether any existing model can capture the data you need.)
Chris@127:    Depending on the sort of data in question, there are various
Chris@127:    existing layers that might be appropriate to start from -- for
Chris@127:    example, a layer that displays images that the user has imported
Chris@127:    and associated with particular times might have something in common
Chris@127:    with the existing TextLayer which displays pieces of text that are
Chris@127:    associated with particular times.
Chris@127: 
Chris@127:    Although layers are visual objects, they are contained in the
Chris@127:    Document in Sonic Visualiser rather than being managed together
Chris@127:    with display widgets.  The Sonic Visualiser file format has
Chris@127:    separate data and layout sections, and the layers are defined in
Chris@127:    the data section and then referred to in the layout section which
Chris@127:    determines which layers may go on which panes (see Pane below).
Chris@127: 
Chris@127:    Once a layer class is defined, some basic data about it needs to be
Chris@127:    set up in the LayerFactory class, and then it will appear in the
Chris@127:    menus and so on on the main window.
Chris@127: 
Chris@127: \section view Widgets that are used to show layers: The View hierarchy
Chris@127: 
Chris@127:    A View is a widget that displays a stack of layers.  The most
Chris@127:    important subclass is Pane, the widget that is used to show most of
Chris@127:    the data in the main window of Sonic Visualiser.
Chris@127: 
Chris@127:    All a pane really does is contain a set of layers and get them to
Chris@127:    render themselves (one on top of the other, with the topmost layer
Chris@127:    being the one that is currently interacted with), cache the
Chris@127:    results, negotiate user interaction with them, and so on.  This is
Chris@127:    generally fiddly, if not especially interesting.  Panes are
Chris@127:    strictly layout objects and are not stored in the Document class;
Chris@127:    instead the MainWindow contains a PaneStack widget (the widget that
Chris@127:    takes up most of Sonic Visualiser's main window) which contains a
Chris@127:    set of panes stacked vertically.
Chris@127: 
Chris@127:    Another View subclass is Overview, which is the widget that
Chris@127:    contains that green waveform showing the entire file at the bottom
Chris@127:    of the window.
Chris@127: 
Chris@127: */
Chris@127: 
Chris@0: static QMutex cleanupMutex;
Chris@0: 
Chris@0: static void
Chris@0: signalHandler(int /* signal */)
Chris@0: {
Chris@0:     // Avoid this happening more than once across threads
Chris@0: 
Chris@0:     cleanupMutex.lock();
Chris@0:     std::cerr << "signalHandler: cleaning up and exiting" << std::endl;
Chris@0:     TempDirectory::getInstance()->cleanup();
Chris@0:     exit(0); // without releasing mutex
Chris@0: }
Chris@0: 
Chris@11: class SVApplication : public QApplication
Chris@11: {
Chris@11: public:
Chris@11:     SVApplication(int argc, char **argv) :
Chris@11:         QApplication(argc, argv),
Chris@11:         m_mainWindow(0) { }
Chris@11:     virtual ~SVApplication() { }
Chris@11: 
Chris@11:     void setMainWindow(MainWindow *mw) { m_mainWindow = mw; }
Chris@11:     void releaseMainWindow() { m_mainWindow = 0; }
Chris@11: 
Chris@11:     virtual void commitData(QSessionManager &manager) {
Chris@11:         if (!m_mainWindow) return;
Chris@11:         bool mayAskUser = manager.allowsInteraction();
Chris@11:         bool success = m_mainWindow->commitData(mayAskUser);
Chris@11:         manager.release();
Chris@11:         if (!success) manager.cancel();
Chris@11:     }
Chris@11: 
Chris@11: protected:
Chris@11:     MainWindow *m_mainWindow;
Chris@11: };
Chris@11: 
Chris@0: int
Chris@0: main(int argc, char **argv)
Chris@0: {
Chris@11:     SVApplication application(argc, argv);
Chris@0: 
Chris@46:     QStringList args = application.arguments();
Chris@46: 
Chris@0:     signal(SIGINT,  signalHandler);
Chris@0:     signal(SIGTERM, signalHandler);
Chris@0: 
Chris@0: #ifndef Q_WS_WIN32
Chris@0:     signal(SIGHUP,  signalHandler);
Chris@0:     signal(SIGQUIT, signalHandler);
Chris@0: #endif
Chris@0: 
Chris@0:     svSystemSpecificInitialisation();
Chris@0: 
Chris@46:     bool audioOutput = true;
Chris@70:     bool oscSupport = true;
Chris@70: 
Chris@133:     if (args.contains("--help") || args.contains("-h") || args.contains("-?")) {
Chris@70:         std::cerr << QApplication::tr(
Chris@70:             "\nSonic Visualiser is a program for viewing and exploring audio data\nfor semantic music analysis and annotation.\n\nUsage:\n\n  %1 [--no-audio] [--no-osc] [<file> ...]\n\n  --no-audio: Do not attempt to open an audio output device\n  --no-osc: Do not provide an Open Sound Control port for remote control\n  <file>: One or more Sonic Visualiser (.sv) and audio files may be provided.\n").arg(argv[0]).toStdString() << std::endl;
Chris@70:         exit(2);
Chris@70:     }
Chris@70: 
Chris@46:     if (args.contains("--no-audio")) audioOutput = false;
Chris@70:     if (args.contains("--no-osc")) oscSupport = false;
Chris@46: 
Chris@6:     QApplication::setOrganizationName("sonic-visualiser");
Chris@5:     QApplication::setOrganizationDomain("sonicvisualiser.org");
Chris@6:     QApplication::setApplicationName("sonic-visualiser");
Chris@141: 
Chris@141:     QIcon icon;
Chris@141:     int sizes[] = { 16, 22, 24, 32, 48, 64, 128 };
Chris@141:     for (int i = 0; i < sizeof(sizes)/sizeof(sizes[0]); ++i) {
Chris@141:         icon.addFile(QString(":icons/sv-%1x%2.png").arg(sizes[i]).arg(sizes[i]));
Chris@141:     }
Chris@141:     QApplication::setWindowIcon(icon);
Chris@7: 
Chris@0:     QString language = QLocale::system().name();
Chris@0: 
Chris@0:     QTranslator qtTranslator;
Chris@0:     QString qtTrName = QString("qt_%1").arg(language);
Chris@0:     std::cerr << "Loading " << qtTrName.toStdString() << "..." << std::endl;
Chris@0:     qtTranslator.load(qtTrName);
Chris@0:     application.installTranslator(&qtTranslator);
Chris@0: 
Chris@0:     QTranslator svTranslator;
Chris@0:     QString svTrName = QString("sonic-visualiser_%1").arg(language);
Chris@0:     std::cerr << "Loading " << svTrName.toStdString() << "..." << std::endl;
Chris@0:     svTranslator.load(svTrName, ":i18n");
Chris@0:     application.installTranslator(&svTranslator);
Chris@0: 
Chris@0:     // Permit size_t and PropertyName to be used as args in queued signal calls
Chris@0:     qRegisterMetaType<size_t>("size_t");
Chris@0:     qRegisterMetaType<PropertyContainer::PropertyName>("PropertyContainer::PropertyName");
Chris@0: 
Chris@70:     MainWindow gui(audioOutput, oscSupport);
Chris@11:     application.setMainWindow(&gui);
Chris@0: 
Chris@0:     QDesktopWidget *desktop = QApplication::desktop();
Chris@0:     QRect available = desktop->availableGeometry();
Chris@0: 
Chris@0:     int width = available.width() * 2 / 3;
Chris@0:     int height = available.height() / 2;
Chris@0:     if (height < 450) height = available.height() * 2 / 3;
Chris@0:     if (width > height * 2) width = height * 2;
Chris@0: 
Chris@5:     QSettings settings;
Chris@5:     settings.beginGroup("MainWindow");
Chris@5:     QSize size = settings.value("size", QSize(width, height)).toSize();
Chris@5:     gui.resize(size);
Chris@5:     if (settings.contains("position")) {
Chris@5:         gui.move(settings.value("position").toPoint());
Chris@5:     }
Chris@5:     settings.endGroup();
Chris@5:     
Chris@0:     gui.show();
Chris@64: 
Chris@118:     // The MainWindow class seems to have trouble dealing with this if
Chris@118:     // it tries to adapt to this preference before the constructor is
Chris@118:     // complete.  As a lazy hack, apply it explicitly from here
Chris@118:     gui.preferenceChanged("Property Box Layout");
Chris@118: 
Chris@54:     bool haveSession = false;
Chris@54:     bool haveMainModel = false;
Chris@46: 
Chris@54:     for (QStringList::iterator i = args.begin(); i != args.end(); ++i) {
Chris@54: 
Chris@83:         MainWindow::FileOpenStatus status = MainWindow::FileOpenFailed;
Chris@54: 
Chris@54:         if (i == args.begin()) continue;
Chris@54:         if (i->startsWith('-')) continue;
Chris@54: 
Chris@85:         if (i->startsWith("http:") || i->startsWith("ftp:")) {
Chris@85:             status = gui.openURL(QUrl(*i));
Chris@85:             continue;
Chris@85:         }
Chris@85: 
Chris@54:         QString path = *i;
Chris@54: 
Chris@54:         if (path.endsWith("sv")) {
Chris@54:             if (!haveSession) {
Chris@82:                 status = gui.openSessionFile(path);
Chris@82:                 if (status == MainWindow::FileOpenSucceeded) {
Chris@54:                     haveSession = true;
Chris@54:                     haveMainModel = true;
Chris@54:                 }
Chris@54:             } else {
Chris@54:                 std::cerr << "WARNING: Ignoring additional session file argument \"" << path.toStdString() << "\"" << std::endl;
Chris@82:                 status = MainWindow::FileOpenSucceeded;
Chris@54:             }
Chris@54:         }
Chris@82:         if (status != MainWindow::FileOpenSucceeded) {
Chris@54:             if (!haveMainModel) {
Chris@82:                 status = gui.openSomeFile(path, MainWindow::ReplaceMainModel);
Chris@82:                 if (status == MainWindow::FileOpenSucceeded) haveMainModel = true;
Chris@54:             } else {
Chris@82:                 status = gui.openSomeFile(path, MainWindow::CreateAdditionalModel);
Chris@54:             }
Chris@54:         }
Chris@82:         if (status == MainWindow::FileOpenFailed) {
Chris@54: 	    QMessageBox::critical
Chris@54:                 (&gui, QMessageBox::tr("Failed to open file"),
Chris@54:                  QMessageBox::tr("File \"%1\" could not be opened").arg(path));
Chris@54:         }
Chris@54:     }            
Chris@123: /*
Chris@120:     TipDialog tipDialog;
Chris@120:     if (tipDialog.isOK()) {
Chris@120:         tipDialog.exec();
Chris@120:     }
Chris@123: */
Chris@0:     int rv = application.exec();
Chris@137: //    std::cerr << "application.exec() returned " << rv << std::endl;
Chris@0: 
Chris@0:     cleanupMutex.lock();
Chris@0:     TempDirectory::getInstance()->cleanup();
Chris@11:     application.releaseMainWindow();
Chris@5: 
Chris@0:     return rv;
Chris@0: }