diff document/SVFileReader.cpp @ 0:cd5d7ff8ef38

* Reorganising code base.  This revision will not compile.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/document/SVFileReader.cpp	Mon Jul 31 12:03:45 2006 +0000
@@ -0,0 +1,1005 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+    
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "SVFileReader.h"
+
+#include "base/Layer.h"
+#include "base/View.h"
+#include "base/PlayParameters.h"
+#include "base/PlayParameterRepository.h"
+
+#include "AudioFileReaderFactory.h"
+
+#include "model/WaveFileModel.h"
+#include "model/DenseThreeDimensionalModel.h"
+#include "model/SparseOneDimensionalModel.h"
+#include "model/SparseTimeValueModel.h"
+#include "model/NoteModel.h"
+#include "model/TextModel.h"
+
+#include "widgets/Pane.h"
+
+#include "main/Document.h"
+
+#include <QString>
+#include <QMessageBox>
+#include <QFileDialog>
+
+#include <iostream>
+
+SVFileReader::SVFileReader(Document *document,
+			   SVFileReaderPaneCallback &callback) :
+    m_document(document),
+    m_paneCallback(callback),
+    m_currentPane(0),
+    m_currentDataset(0),
+    m_currentDerivedModel(0),
+    m_currentPlayParameters(0),
+    m_datasetSeparator(" "),
+    m_inRow(false),
+    m_rowNumber(0),
+    m_ok(false)
+{
+}
+
+void
+SVFileReader::parse(const QString &xmlData)
+{
+    QXmlInputSource inputSource;
+    inputSource.setData(xmlData);
+    parse(inputSource);
+}
+
+void
+SVFileReader::parse(QXmlInputSource &inputSource)
+{
+    QXmlSimpleReader reader;
+    reader.setContentHandler(this);
+    reader.setErrorHandler(this);
+    m_ok = reader.parse(inputSource);
+}    
+
+bool
+SVFileReader::isOK()
+{
+    return m_ok;
+}
+	
+SVFileReader::~SVFileReader()
+{
+    if (!m_awaitingDatasets.empty()) {
+	std::cerr << "WARNING: SV-XML: File ended with "
+		  << m_awaitingDatasets.size() << " unfilled model dataset(s)"
+		  << std::endl;
+    }
+
+    std::set<Model *> unaddedModels;
+
+    for (std::map<int, Model *>::iterator i = m_models.begin();
+	 i != m_models.end(); ++i) {
+	if (m_addedModels.find(i->second) == m_addedModels.end()) {
+	    unaddedModels.insert(i->second);
+	}
+    }
+
+    if (!unaddedModels.empty()) {
+	std::cerr << "WARNING: SV-XML: File contained "
+		  << unaddedModels.size() << " unused models"
+		  << std::endl;
+	while (!unaddedModels.empty()) {
+	    delete *unaddedModels.begin();
+	    unaddedModels.erase(unaddedModels.begin());
+	}
+    }	
+}
+
+bool
+SVFileReader::startElement(const QString &, const QString &,
+			   const QString &qName,
+			   const QXmlAttributes &attributes)
+{
+    QString name = qName.toLower();
+
+    bool ok = false;
+
+    // Valid element names:
+    //
+    // sv
+    // data
+    // dataset
+    // display
+    // derivation
+    // playparameters
+    // layer
+    // model
+    // point
+    // row
+    // view
+    // window
+
+    if (name == "sv") {
+
+	// nothing needed
+	ok = true;
+
+    } else if (name == "data") {
+
+	// nothing needed
+	m_inData = true;
+	ok = true;
+
+    } else if (name == "display") {
+
+	// nothing needed
+	ok = true;
+
+    } else if (name == "window") {
+
+	ok = readWindow(attributes);
+
+    } else if (name == "model") {
+
+	ok = readModel(attributes);
+    
+    } else if (name == "dataset") {
+	
+	ok = readDatasetStart(attributes);
+
+    } else if (name == "bin") {
+	
+	ok = addBinToDataset(attributes);
+    
+    } else if (name == "point") {
+	
+	ok = addPointToDataset(attributes);
+
+    } else if (name == "row") {
+
+	ok = addRowToDataset(attributes);
+
+    } else if (name == "layer") {
+
+        addUnaddedModels(); // all models must be specified before first layer
+	ok = readLayer(attributes);
+
+    } else if (name == "view") {
+
+	m_inView = true;
+	ok = readView(attributes);
+
+    } else if (name == "derivation") {
+
+	ok = readDerivation(attributes);
+
+    } else if (name == "playparameters") {
+        
+        ok = readPlayParameters(attributes);
+
+    } else if (name == "plugin") {
+
+	ok = readPlugin(attributes);
+
+    } else if (name == "selections") {
+
+	m_inSelections = true;
+	ok = true;
+
+    } else if (name == "selection") {
+
+	ok = readSelection(attributes);
+    }
+
+    if (!ok) {
+	std::cerr << "WARNING: SV-XML: Failed to completely process element \""
+		  << name.toLocal8Bit().data() << "\"" << std::endl;
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::characters(const QString &text)
+{
+    bool ok = false;
+
+    if (m_inRow) {
+	ok = readRowData(text);
+	if (!ok) {
+	    std::cerr << "WARNING: SV-XML: Failed to read row data content for row " << m_rowNumber << std::endl;
+	}
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::endElement(const QString &, const QString &,
+			 const QString &qName)
+{
+    QString name = qName.toLower();
+
+    if (name == "dataset") {
+
+	if (m_currentDataset) {
+	    
+	    bool foundInAwaiting = false;
+
+	    for (std::map<int, int>::iterator i = m_awaitingDatasets.begin();
+		 i != m_awaitingDatasets.end(); ++i) {
+		if (m_models[i->second] == m_currentDataset) {
+		    m_awaitingDatasets.erase(i);
+		    foundInAwaiting = true;
+		    break;
+		}
+	    }
+
+	    if (!foundInAwaiting) {
+		std::cerr << "WARNING: SV-XML: Dataset precedes model, or no model uses dataset" << std::endl;
+	    }
+	}
+
+	m_currentDataset = 0;
+
+    } else if (name == "data") {
+
+        addUnaddedModels();
+	m_inData = false;
+
+    } else if (name == "derivation") {
+        
+        if (m_currentDerivedModel) {
+            m_document->addDerivedModel(m_currentTransform,
+                                        m_document->getMainModel(), //!!!
+                                        m_currentTransformChannel,
+                                        m_currentDerivedModel,
+                                        m_currentTransformConfiguration);
+            m_addedModels.insert(m_currentDerivedModel);
+            m_currentDerivedModel = 0;
+            m_currentTransform = "";
+            m_currentTransformConfiguration = "";
+        }
+
+    } else if (name == "row") {
+	m_inRow = false;
+    } else if (name == "view") {
+	m_inView = false;
+    } else if (name == "selections") {
+	m_inSelections = false;
+    } else if (name == "playparameters") {
+        m_currentPlayParameters = 0;
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::error(const QXmlParseException &exception)
+{
+    m_errorString =
+	QString("ERROR: SV-XML: %1 at line %2, column %3")
+	.arg(exception.message())
+	.arg(exception.lineNumber())
+	.arg(exception.columnNumber());
+    std::cerr << m_errorString.toLocal8Bit().data() << std::endl;
+    return QXmlDefaultHandler::error(exception);
+}
+
+bool
+SVFileReader::fatalError(const QXmlParseException &exception)
+{
+    m_errorString =
+	QString("FATAL ERROR: SV-XML: %1 at line %2, column %3")
+	.arg(exception.message())
+	.arg(exception.lineNumber())
+	.arg(exception.columnNumber());
+    std::cerr << m_errorString.toLocal8Bit().data() << std::endl;
+    return QXmlDefaultHandler::fatalError(exception);
+}
+
+
+#define READ_MANDATORY(TYPE, NAME, CONVERSION)		      \
+    TYPE NAME = attributes.value(#NAME).trimmed().CONVERSION(&ok); \
+    if (!ok) { \
+	std::cerr << "WARNING: SV-XML: Missing or invalid mandatory " #TYPE " attribute \"" #NAME "\"" << std::endl; \
+	return false; \
+    }
+
+bool
+SVFileReader::readWindow(const QXmlAttributes &attributes)
+{
+    bool ok = false;
+
+    READ_MANDATORY(int, width, toInt);
+    READ_MANDATORY(int, height, toInt);
+
+    m_paneCallback.setWindowSize(width, height);
+    return true;
+}
+
+void
+SVFileReader::addUnaddedModels()
+{
+    std::set<Model *> unaddedModels;
+    
+    for (std::map<int, Model *>::iterator i = m_models.begin();
+         i != m_models.end(); ++i) {
+        if (m_addedModels.find(i->second) == m_addedModels.end()) {
+            unaddedModels.insert(i->second);
+        }
+    }
+    
+    for (std::set<Model *>::iterator i = unaddedModels.begin();
+         i != unaddedModels.end(); ++i) {
+        m_document->addImportedModel(*i);
+        m_addedModels.insert(*i);
+    }
+}
+
+bool
+SVFileReader::readModel(const QXmlAttributes &attributes)
+{
+    bool ok = false;
+
+    READ_MANDATORY(int, id, toInt);
+
+    if (m_models.find(id) != m_models.end()) {
+	std::cerr << "WARNING: SV-XML: Ignoring duplicate model id " << id
+		  << std::endl;
+	return false;
+    }
+
+    QString name = attributes.value("name");
+
+    READ_MANDATORY(int, sampleRate, toInt);
+
+    QString type = attributes.value("type").trimmed();
+    bool mainModel = (attributes.value("mainModel").trimmed() == "true");
+    
+    if (type == "wavefile") {
+	
+	QString file = attributes.value("file");
+	WaveFileModel *model = new WaveFileModel(file);
+
+	while (!model->isOK()) {
+
+	    delete model;
+	    model = 0;
+
+	    if (QMessageBox::question(0,
+				      QMessageBox::tr("Failed to open file"),
+				      QMessageBox::tr("Audio file \"%1\" could not be opened.\nLocate it?").arg(file),
+				      QMessageBox::Ok,
+				      QMessageBox::Cancel) == QMessageBox::Ok) {
+
+		QString path = QFileDialog::getOpenFileName
+		    (0, QFileDialog::tr("Locate file \"%1\"").arg(QFileInfo(file).fileName()), file,
+		     QFileDialog::tr("Audio files (%1)\nAll files (*.*)")
+		     .arg(AudioFileReaderFactory::getKnownExtensions()));
+
+		if (path != "") {
+		    model = new WaveFileModel(path);
+		} else {
+		    return false;
+		}
+	    } else {
+		return false;
+	    }
+	}
+
+	m_models[id] = model;
+	if (mainModel) {
+	    m_document->setMainModel(model);
+	    m_addedModels.insert(model);
+	}
+	// Derived models will be added when their derivation
+	// is found.
+
+	return true;
+
+    } else if (type == "dense") {
+	
+	READ_MANDATORY(int, dimensions, toInt);
+		    
+	// Currently the only dense model we support here
+	// is the dense 3d model.  Dense time-value models
+	// are always file-backed waveform data, at this
+	// point, and they come in as the wavefile model
+	// type above.
+	
+	if (dimensions == 3) {
+	    
+	    READ_MANDATORY(int, windowSize, toInt);
+	    READ_MANDATORY(int, yBinCount, toInt);
+	    
+	    DenseThreeDimensionalModel *model =
+		new DenseThreeDimensionalModel(sampleRate, windowSize, yBinCount);
+	    
+	    float minimum = attributes.value("minimum").trimmed().toFloat(&ok);
+	    if (ok) model->setMinimumLevel(minimum);
+	    
+	    float maximum = attributes.value("maximum").trimmed().toFloat(&ok);
+	    if (ok) model->setMaximumLevel(maximum);
+
+	    int dataset = attributes.value("dataset").trimmed().toInt(&ok);
+	    if (ok) m_awaitingDatasets[dataset] = id;
+
+	    m_models[id] = model;
+	    return true;
+
+	} else {
+
+	    std::cerr << "WARNING: SV-XML: Unexpected dense model dimension ("
+		      << dimensions << ")" << std::endl;
+	}
+    } else if (type == "sparse") {
+
+	READ_MANDATORY(int, dimensions, toInt);
+		  
+	if (dimensions == 1) {
+	    
+	    READ_MANDATORY(int, resolution, toInt);
+
+	    SparseOneDimensionalModel *model = new SparseOneDimensionalModel
+		(sampleRate, resolution);
+	    m_models[id] = model;
+
+	    int dataset = attributes.value("dataset").trimmed().toInt(&ok);
+	    if (ok) m_awaitingDatasets[dataset] = id;
+
+	    return true;
+
+	} else if (dimensions == 2 || dimensions == 3) {
+	    
+	    READ_MANDATORY(int, resolution, toInt);
+
+	    float minimum = attributes.value("minimum").trimmed().toFloat(&ok);
+	    float maximum = attributes.value("maximum").trimmed().toFloat(&ok);
+	    float valueQuantization =
+		attributes.value("valueQuantization").trimmed().toFloat(&ok);
+
+	    bool notifyOnAdd = (attributes.value("notifyOnAdd") == "true");
+
+            QString units = attributes.value("units");
+
+	    if (dimensions == 2) {
+		if (attributes.value("subtype") == "text") {
+		    TextModel *model = new TextModel
+			(sampleRate, resolution, notifyOnAdd);
+		    m_models[id] = model;
+		} else {
+		    SparseTimeValueModel *model = new SparseTimeValueModel
+			(sampleRate, resolution, minimum, maximum, notifyOnAdd);
+                    model->setScaleUnits(units);
+		    m_models[id] = model;
+		}
+	    } else {
+		NoteModel *model = new NoteModel
+		    (sampleRate, resolution, minimum, maximum, notifyOnAdd);
+		model->setValueQuantization(valueQuantization);
+                model->setScaleUnits(units);
+		m_models[id] = model;
+	    }
+
+	    int dataset = attributes.value("dataset").trimmed().toInt(&ok);
+	    if (ok) m_awaitingDatasets[dataset] = id;
+
+	    return true;
+
+	} else {
+
+	    std::cerr << "WARNING: SV-XML: Unexpected sparse model dimension ("
+		      << dimensions << ")" << std::endl;
+	}
+    } else {
+
+	std::cerr << "WARNING: SV-XML: Unexpected model type \""
+		  << type.toLocal8Bit().data() << "\" for model id" << id << std::endl;
+    }
+
+    return false;
+}
+
+bool
+SVFileReader::readView(const QXmlAttributes &attributes)
+{
+    QString type = attributes.value("type");
+    m_currentPane = 0;
+    
+    if (type != "pane") {
+	std::cerr << "WARNING: SV-XML: Unexpected view type \""
+		  << type.toLocal8Bit().data() << "\"" << std::endl;
+	return false;
+    }
+
+    m_currentPane = m_paneCallback.addPane();
+
+    if (!m_currentPane) {
+	std::cerr << "WARNING: SV-XML: Internal error: Failed to add pane!"
+		  << std::endl;
+	return false;
+    }
+
+    bool ok = false;
+
+    View *view = m_currentPane;
+
+    // The view properties first
+
+    READ_MANDATORY(size_t, centre, toUInt);
+    READ_MANDATORY(size_t, zoom, toUInt);
+    READ_MANDATORY(int, followPan, toInt);
+    READ_MANDATORY(int, followZoom, toInt);
+    READ_MANDATORY(int, light, toInt);
+    QString tracking = attributes.value("tracking");
+
+    // Specify the follow modes before we set the actual values
+    view->setFollowGlobalPan(followPan);
+    view->setFollowGlobalZoom(followZoom);
+    view->setPlaybackFollow(tracking == "scroll" ? View::PlaybackScrollContinuous :
+			    tracking == "page" ? View::PlaybackScrollPage
+			    : View::PlaybackIgnore);
+
+    // Then set these values
+    view->setCentreFrame(centre);
+    view->setZoomLevel(zoom);
+    view->setLightBackground(light);
+
+    // And pane properties
+    READ_MANDATORY(int, centreLineVisible, toInt);
+    m_currentPane->setCentreLineVisible(centreLineVisible);
+
+    int height = attributes.value("height").toInt(&ok);
+    if (ok) {
+	m_currentPane->resize(m_currentPane->width(), height);
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::readLayer(const QXmlAttributes &attributes)
+{
+    QString type = attributes.value("type");
+
+    int id;
+    bool ok = false;
+    id = attributes.value("id").trimmed().toInt(&ok);
+
+    if (!ok) {
+	std::cerr << "WARNING: SV-XML: No layer id for layer of type \""
+		  << type.toLocal8Bit().data()
+		  << "\"" << std::endl;
+	return false;
+    }
+
+    Layer *layer = 0;
+    bool isNewLayer = false;
+
+    // Layers are expected to be defined in layer elements in the data
+    // section, and referred to in layer elements in the view
+    // sections.  So if we're in the data section, we expect this
+    // layer not to exist already; if we're in the view section, we
+    // expect it to exist.
+
+    if (m_inData) {
+
+	if (m_layers.find(id) != m_layers.end()) {
+	    std::cerr << "WARNING: SV-XML: Ignoring duplicate layer id " << id
+		      << " in data section" << std::endl;
+	    return false;
+	}
+
+	layer = m_layers[id] = m_document->createLayer
+	    (LayerFactory::getInstance()->getLayerTypeForName(type));
+
+	if (layer) {
+	    m_layers[id] = layer;
+	    isNewLayer = true;
+	}
+
+    } else {
+
+	if (!m_currentPane) {
+	    std::cerr << "WARNING: SV-XML: No current pane for layer " << id
+		      << " in view section" << std::endl;
+	    return false;
+	}
+
+	if (m_layers.find(id) != m_layers.end()) {
+	    
+	    layer = m_layers[id];
+	
+	} else {
+	    std::cerr << "WARNING: SV-XML: Layer id " << id 
+		      << " in view section has not been defined -- defining it here"
+		      << std::endl;
+
+	    layer = m_document->createLayer
+		(LayerFactory::getInstance()->getLayerTypeForName(type));
+
+	    if (layer) {
+		m_layers[id] = layer;
+		isNewLayer = true;
+	    }
+	}
+    }
+	    
+    if (!layer) {
+	std::cerr << "WARNING: SV-XML: Failed to add layer of type \""
+		  << type.toLocal8Bit().data()
+		  << "\"" << std::endl;
+	return false;
+    }
+
+    if (isNewLayer) {
+
+	QString name = attributes.value("name");
+	layer->setObjectName(name);
+
+	int modelId;
+	bool modelOk = false;
+	modelId = attributes.value("model").trimmed().toInt(&modelOk);
+
+	if (modelOk) {
+	    if (m_models.find(modelId) != m_models.end()) {
+		Model *model = m_models[modelId];
+		m_document->setModel(layer, model);
+	    } else {
+		std::cerr << "WARNING: SV-XML: Unknown model id " << modelId
+			  << " in layer definition" << std::endl;
+	    }
+	}
+
+	layer->setProperties(attributes);
+    }
+
+    if (!m_inData && m_currentPane) {
+	m_document->addLayerToView(m_currentPane, layer);
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::readDatasetStart(const QXmlAttributes &attributes)
+{
+    bool ok = false;
+
+    READ_MANDATORY(int, id, toInt);
+    READ_MANDATORY(int, dimensions, toInt);
+    
+    if (m_awaitingDatasets.find(id) == m_awaitingDatasets.end()) {
+	std::cerr << "WARNING: SV-XML: Unwanted dataset " << id << std::endl;
+	return false;
+    }
+    
+    int modelId = m_awaitingDatasets[id];
+    
+    Model *model = 0;
+    if (m_models.find(modelId) != m_models.end()) {
+	model = m_models[modelId];
+    } else {
+	std::cerr << "WARNING: SV-XML: Internal error: Unknown model " << modelId
+		  << " expecting dataset " << id << std::endl;
+	return false;
+    }
+
+    bool good = false;
+
+    switch (dimensions) {
+    case 1:
+	if (dynamic_cast<SparseOneDimensionalModel *>(model)) good = true;
+	break;
+
+    case 2:
+	if (dynamic_cast<SparseTimeValueModel *>(model)) good = true;
+	else if (dynamic_cast<TextModel *>(model)) good = true;
+	break;
+
+    case 3:
+	if (dynamic_cast<NoteModel *>(model)) good = true;
+	else if (dynamic_cast<DenseThreeDimensionalModel *>(model)) {
+	    m_datasetSeparator = attributes.value("separator");
+	    good = true;
+	}
+	break;
+    }
+
+    if (!good) {
+	std::cerr << "WARNING: SV-XML: Model id " << modelId << " has wrong number of dimensions for " << dimensions << "-D dataset " << id << std::endl;
+	m_currentDataset = 0;
+	return false;
+    }
+
+    m_currentDataset = model;
+    return true;
+}
+
+bool
+SVFileReader::addPointToDataset(const QXmlAttributes &attributes)
+{
+    bool ok = false;
+
+    READ_MANDATORY(int, frame, toInt);
+
+    SparseOneDimensionalModel *sodm = dynamic_cast<SparseOneDimensionalModel *>
+	(m_currentDataset);
+
+    if (sodm) {
+	QString label = attributes.value("label");
+	sodm->addPoint(SparseOneDimensionalModel::Point(frame, label));
+	return true;
+    }
+
+    SparseTimeValueModel *stvm = dynamic_cast<SparseTimeValueModel *>
+	(m_currentDataset);
+
+    if (stvm) {
+	float value = 0.0;
+	value = attributes.value("value").trimmed().toFloat(&ok);
+	QString label = attributes.value("label");
+	stvm->addPoint(SparseTimeValueModel::Point(frame, value, label));
+	return ok;
+    }
+	
+    NoteModel *nm = dynamic_cast<NoteModel *>(m_currentDataset);
+
+    if (nm) {
+	float value = 0.0;
+	value = attributes.value("value").trimmed().toFloat(&ok);
+	float duration = 0.0;
+	duration = attributes.value("duration").trimmed().toFloat(&ok);
+	QString label = attributes.value("label");
+	nm->addPoint(NoteModel::Point(frame, value, duration, label));
+	return ok;
+    }
+
+    TextModel *tm = dynamic_cast<TextModel *>(m_currentDataset);
+
+    if (tm) {
+	float height = 0.0;
+	height = attributes.value("height").trimmed().toFloat(&ok);
+	QString label = attributes.value("label");
+	tm->addPoint(TextModel::Point(frame, height, label));
+	return ok;
+    }
+
+    std::cerr << "WARNING: SV-XML: Point element found in non-point dataset" << std::endl;
+
+    return false;
+}
+
+bool
+SVFileReader::addBinToDataset(const QXmlAttributes &attributes)
+{
+    DenseThreeDimensionalModel *dtdm = dynamic_cast<DenseThreeDimensionalModel *>
+	(m_currentDataset);
+
+    if (dtdm) {
+
+	bool ok = false;
+	int n = attributes.value("number").trimmed().toInt(&ok);
+	if (!ok) {
+	    std::cerr << "WARNING: SV-XML: Missing or invalid bin number"
+		      << std::endl;
+	    return false;
+	}
+
+	QString name = attributes.value("name");
+
+	dtdm->setBinName(n, name);
+	return true;
+    }
+
+    std::cerr << "WARNING: SV-XML: Bin definition found in incompatible dataset" << std::endl;
+
+    return false;
+}
+
+
+bool
+SVFileReader::addRowToDataset(const QXmlAttributes &attributes)
+{
+    m_inRow = false;
+
+    bool ok = false;
+    m_rowNumber = attributes.value("n").trimmed().toInt(&ok);
+    if (!ok) {
+	std::cerr << "WARNING: SV-XML: Missing or invalid row number"
+		  << std::endl;
+	return false;
+    }
+    
+    m_inRow = true;
+
+//    std::cerr << "SV-XML: In row " << m_rowNumber << std::endl;
+    
+    return true;
+}
+
+bool
+SVFileReader::readRowData(const QString &text)
+{
+    DenseThreeDimensionalModel *dtdm = dynamic_cast<DenseThreeDimensionalModel *>
+	(m_currentDataset);
+
+    bool warned = false;
+
+    if (dtdm) {
+	QStringList data = text.split(m_datasetSeparator);
+
+	DenseThreeDimensionalModel::BinValueSet values;
+
+	for (QStringList::iterator i = data.begin(); i != data.end(); ++i) {
+
+	    if (values.size() == dtdm->getYBinCount()) {
+		if (!warned) {
+		    std::cerr << "WARNING: SV-XML: Too many y-bins in 3-D dataset row "
+			      << m_rowNumber << std::endl;
+		    warned = true;
+		}
+	    }
+
+	    bool ok;
+	    float value = i->toFloat(&ok);
+	    if (!ok) {
+		std::cerr << "WARNING: SV-XML: Bad floating-point value "
+			  << i->toLocal8Bit().data()
+			  << " in row data" << std::endl;
+	    } else {
+		values.push_back(value);
+	    }
+	}
+
+	size_t windowStartFrame = m_rowNumber * dtdm->getWindowSize();
+
+	dtdm->setBinValues(windowStartFrame, values);
+	return true;
+    }
+
+    std::cerr << "WARNING: SV-XML: Row data found in non-row dataset" << std::endl;
+
+    return false;
+}
+
+bool
+SVFileReader::readDerivation(const QXmlAttributes &attributes)
+{
+    int modelId = 0;
+    bool modelOk = false;
+    modelId = attributes.value("model").trimmed().toInt(&modelOk);
+
+    if (!modelOk) {
+	std::cerr << "WARNING: SV-XML: No model id specified for derivation" << std::endl;
+	return false;
+    }
+    
+    QString transform = attributes.value("transform");
+    
+    if (m_models.find(modelId) != m_models.end()) {
+
+        m_currentDerivedModel = m_models[modelId];
+        m_currentTransform = transform;
+        m_currentTransformConfiguration = "";
+
+        bool ok = false;
+        int channel = attributes.value("channel").trimmed().toInt(&ok);
+        if (ok) m_currentTransformChannel = channel;
+        else m_currentTransformChannel = -1;
+
+    } else {
+	std::cerr << "WARNING: SV-XML: Unknown derived model " << modelId
+		  << " for transform \"" << transform.toLocal8Bit().data() << "\""
+		  << std::endl;
+        return false;
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::readPlayParameters(const QXmlAttributes &attributes)
+{
+    m_currentPlayParameters = 0;
+
+    int modelId = 0;
+    bool modelOk = false;
+    modelId = attributes.value("model").trimmed().toInt(&modelOk);
+
+    if (!modelOk) {
+	std::cerr << "WARNING: SV-XML: No model id specified for play parameters" << std::endl;
+	return false;
+    }
+
+    if (m_models.find(modelId) != m_models.end()) {
+
+        bool ok = false;
+
+        PlayParameters *parameters = PlayParameterRepository::getInstance()->
+            getPlayParameters(m_models[modelId]);
+
+        if (!parameters) {
+            std::cerr << "WARNING: SV-XML: Play parameters for model "
+                      << modelId
+                      << " not found - has model been added to document?"
+                      << std::endl;
+            return false;
+        }
+        
+        bool muted = (attributes.value("mute").trimmed() == "true");
+        if (ok) parameters->setPlayMuted(muted);
+        
+        float pan = attributes.value("pan").toFloat(&ok);
+        if (ok) parameters->setPlayPan(pan);
+        
+        float gain = attributes.value("gain").toFloat(&ok);
+        if (ok) parameters->setPlayGain(gain);
+        
+        QString pluginId = attributes.value("pluginId");
+        if (pluginId != "") parameters->setPlayPluginId(pluginId);
+        
+        m_currentPlayParameters = parameters;
+
+//        std::cerr << "Current play parameters for model: " << m_models[modelId] << ": " << m_currentPlayParameters << std::endl;
+
+    } else {
+
+	std::cerr << "WARNING: SV-XML: Unknown model " << modelId
+		  << " for play parameters" << std::endl;
+        return false;
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::readPlugin(const QXmlAttributes &attributes)
+{
+    if (!m_currentDerivedModel && !m_currentPlayParameters) {
+        std::cerr << "WARNING: SV-XML: Plugin found outside derivation or play parameters" << std::endl;
+        return false;
+    }
+
+    QString configurationXml = "<plugin";
+    
+    for (int i = 0; i < attributes.length(); ++i) {
+        configurationXml += QString(" %1=\"%2\"")
+            .arg(attributes.qName(i)).arg(attributes.value(i));
+    }
+
+    configurationXml += "/>";
+
+    if (m_currentPlayParameters) {
+        m_currentPlayParameters->setPlayPluginConfiguration(configurationXml);
+    } else {
+        m_currentTransformConfiguration += configurationXml;
+    }
+
+    return true;
+}
+
+bool
+SVFileReader::readSelection(const QXmlAttributes &attributes)
+{
+    bool ok;
+
+    READ_MANDATORY(int, start, toInt);
+    READ_MANDATORY(int, end, toInt);
+
+    m_paneCallback.addSelection(start, end);
+
+    return true;
+}
+