diff framework/SVFileReader.cpp @ 45:9ea770d93fae

* document -> framework (will not compile, path fixes not in yet)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/framework/SVFileReader.cpp	Wed Oct 24 16:37:58 2007 +0000
@@ -0,0 +1,1167 @@
+/* -*- 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 and QMUL.
+    
+    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 "layer/Layer.h"
+#include "view/View.h"
+#include "base/PlayParameters.h"
+#include "base/PlayParameterRepository.h"
+
+#include "data/fileio/AudioFileReaderFactory.h"
+#include "data/fileio/FileFinder.h"
+#include "data/fileio/FileSource.h"
+
+#include "data/model/WaveFileModel.h"
+#include "data/model/EditableDenseThreeDimensionalModel.h"
+#include "data/model/SparseOneDimensionalModel.h"
+#include "data/model/SparseTimeValueModel.h"
+#include "data/model/NoteModel.h"
+#include "data/model/TextModel.h"
+#include "data/model/ImageModel.h"
+
+#include "view/Pane.h"
+
+#include "Document.h"
+
+#include <QString>
+#include <QMessageBox>
+#include <QFileDialog>
+
+#include <iostream>
+
+SVFileReader::SVFileReader(Document *document,
+			   SVFileReaderPaneCallback &callback,
+                           QString location) :
+    m_document(document),
+    m_paneCallback(callback),
+    m_location(location),
+    m_currentPane(0),
+    m_currentDataset(0),
+    m_currentDerivedModel(0),
+    m_currentDerivedModelId(-1),
+    m_currentPlayParameters(0),
+    m_datasetSeparator(" "),
+    m_inRow(false),
+    m_inLayer(false),
+    m_inView(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);
+
+    } else if (name == "measurement") {
+
+        ok = readMeasurement(attributes);
+
+    } else {
+        std::cerr << "WARNING: SV-XML: Unexpected element \""
+                  << name.toLocal8Bit().data() << "\"" << std::endl;
+    }
+
+    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 (haveModel(i->second) &&
+                    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) {
+            if (m_currentDerivedModel < 0) {
+                std::cerr << "WARNING: SV-XML: Bad derivation output model id "
+                          << m_currentDerivedModelId << std::endl;
+            } else if (haveModel(m_currentDerivedModelId)) {
+                std::cerr << "WARNING: SV-XML: Derivation has existing model "
+                          << m_currentDerivedModelId
+                          << " as target, not regenerating" << std::endl;
+            } else {
+                m_currentDerivedModel = m_models[m_currentDerivedModelId] =
+                    m_document->addDerivedModel(m_currentTransform,
+                                                m_currentTransformSource,
+                                                m_currentTransformContext,
+                                                m_currentTransformConfiguration);
+            }
+        } else {
+            m_document->addDerivedModel(m_currentTransform,
+                                        m_currentTransformSource,
+                                        m_currentTransformContext,
+                                        m_currentDerivedModel,
+                                        m_currentTransformConfiguration);
+        }
+
+        m_addedModels.insert(m_currentDerivedModel);
+        m_currentDerivedModel = 0;
+        m_currentDerivedModelId = -1;
+        m_currentTransform = "";
+        m_currentTransformConfiguration = "";
+
+    } else if (name == "row") {
+	m_inRow = false;
+    } else if (name == "layer") {
+        m_inLayer = 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 (haveModel(id)) {
+	std::cerr << "WARNING: SV-XML: Ignoring duplicate model id " << id
+		  << std::endl;
+	return false;
+    }
+
+    QString name = attributes.value("name");
+
+    std::cerr << "SVFileReader::readModel: model name \"" << name.toStdString() << "\"" << std::endl;
+
+    READ_MANDATORY(int, sampleRate, toInt);
+
+    QString type = attributes.value("type").trimmed();
+    bool mainModel = (attributes.value("mainModel").trimmed() == "true");
+
+    if (type == "wavefile") {
+	
+        WaveFileModel *model = 0;
+        FileFinder *ff = FileFinder::getInstance();
+        QString originalPath = attributes.value("file");
+        QString path = ff->find(FileFinder::AudioFile,
+                                originalPath, m_location);
+
+        FileSource file(path);
+        file.waitForStatus();
+
+        if (!file.isOK()) {
+            std::cerr << "SVFileReader::readModel: Failed to retrieve file \"" << path.toStdString() << "\" for wave file model: " << file.getErrorString().toStdString() << std::endl;
+        } else if (!file.isAvailable()) {
+            std::cerr << "SVFileReader::readModel: Failed to retrieve file \"" << path.toStdString() << "\" for wave file model: Source unavailable" << std::endl;
+        } else {
+
+            file.waitForData();
+            model = new WaveFileModel(file);
+            if (!model->isOK()) {
+                delete model;
+                model = 0;
+            }
+        }
+
+        if (!model) return false;
+
+        model->setObjectName(name);
+	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 wavefile
+	// models.
+	
+	if (dimensions == 3) {
+	    
+	    READ_MANDATORY(int, windowSize, toInt);
+	    READ_MANDATORY(int, yBinCount, toInt);
+	    
+            EditableDenseThreeDimensionalModel *model =
+		new EditableDenseThreeDimensionalModel
+                (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;
+
+            model->setObjectName(name);
+	    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);
+
+            if (attributes.value("subtype") == "image") {
+
+                bool notifyOnAdd = (attributes.value("notifyOnAdd") == "true");
+                ImageModel *model = new ImageModel(sampleRate, resolution,
+                                                   notifyOnAdd);
+                model->setObjectName(name);
+                m_models[id] = model;
+
+            } else {
+
+                SparseOneDimensionalModel *model = new SparseOneDimensionalModel
+                    (sampleRate, resolution);
+                model->setObjectName(name);
+                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);
+
+            bool haveMinMax = true;
+	    float minimum = attributes.value("minimum").trimmed().toFloat(&ok);
+            if (!ok) haveMinMax = false;
+	    float maximum = attributes.value("maximum").trimmed().toFloat(&ok);
+            if (!ok) haveMinMax = false;
+
+	    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);
+                    model->setObjectName(name);
+		    m_models[id] = model;
+		} else {
+		    SparseTimeValueModel *model;
+                    if (haveMinMax) {
+                        model = new SparseTimeValueModel
+                            (sampleRate, resolution, minimum, maximum, notifyOnAdd);
+                    } else {
+                        model = new SparseTimeValueModel
+                            (sampleRate, resolution, notifyOnAdd);
+                    }
+                    model->setScaleUnits(units);
+                    model->setObjectName(name);
+		    m_models[id] = model;
+		}
+	    } else {
+		NoteModel *model;
+                if (haveMinMax) {
+                    model = new NoteModel
+                        (sampleRate, resolution, minimum, maximum, notifyOnAdd);
+                } else {
+                    model = new NoteModel
+                        (sampleRate, resolution, notifyOnAdd);
+                }
+		model->setValueQuantization(valueQuantization);
+                model->setScaleUnits(units);
+                model->setObjectName(name);
+		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);
+    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" ? PlaybackScrollContinuous :
+			    tracking == "page" ? PlaybackScrollPage
+			    : PlaybackIgnore);
+
+    // Then set these values
+    view->setCentreFrame(centre);
+    view->setZoomLevel(zoom);
+
+    // 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 (haveModel(modelId)) {
+		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) {
+
+        QString visible = attributes.value("visible");
+        bool dormant = (visible == "false");
+
+        // We need to do this both before and after adding the layer
+        // to the view -- we need it to be dormant if appropriate
+        // before it's actually added to the view so that any property
+        // box gets the right state when it's added, but the add layer
+        // command sets dormant to false because it assumes it may be
+        // restoring a previously dormant layer, so we need to set it
+        // again afterwards too.  Hm
+        layer->setLayerDormant(m_currentPane, dormant);
+
+	m_document->addLayerToView(m_currentPane, layer);
+
+        layer->setLayerDormant(m_currentPane, dormant);
+    }
+
+    m_currentLayer = layer;
+    m_inLayer = true;
+
+    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 (haveModel(modelId)) {
+	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;
+        else if (dynamic_cast<ImageModel *>(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<EditableDenseThreeDimensionalModel *>(model)) {
+	    m_datasetSeparator = attributes.value("separator");
+	    good = true;
+	}
+	break;
+    }
+
+    if (!good) {
+	std::cerr << "WARNING: SV-XML: Model id " << modelId << " has wrong number of dimensions or inappropriate type 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);
+
+//    std::cerr << "SVFileReader::addPointToDataset: frame = " << frame << std::endl;
+
+    SparseOneDimensionalModel *sodm = dynamic_cast<SparseOneDimensionalModel *>
+	(m_currentDataset);
+
+    if (sodm) {
+//        std::cerr << "Current dataset is a sparse one dimensional model" << std::endl;
+	QString label = attributes.value("label");
+	sodm->addPoint(SparseOneDimensionalModel::Point(frame, label));
+	return true;
+    }
+
+    SparseTimeValueModel *stvm = dynamic_cast<SparseTimeValueModel *>
+	(m_currentDataset);
+
+    if (stvm) {
+//        std::cerr << "Current dataset is a sparse time-value model" << std::endl;
+	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) {
+//        std::cerr << "Current dataset is a note model" << std::endl;
+	float value = 0.0;
+	value = attributes.value("value").trimmed().toFloat(&ok);
+	size_t duration = 0;
+	duration = attributes.value("duration").trimmed().toUInt(&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) {
+//        std::cerr << "Current dataset is a text model" << std::endl;
+	float height = 0.0;
+	height = attributes.value("height").trimmed().toFloat(&ok);
+	QString label = attributes.value("label");
+//        std::cerr << "SVFileReader::addPointToDataset: TextModel: frame = " << frame << ", height = " << height << ", label = " << label.toStdString() << ", ok = " << ok << std::endl;
+	tm->addPoint(TextModel::Point(frame, height, label));
+	return ok;
+    }
+
+    ImageModel *im = dynamic_cast<ImageModel *>(m_currentDataset);
+
+    if (im) {
+//        std::cerr << "Current dataset is an image model" << std::endl;
+	QString image = attributes.value("image");
+	QString label = attributes.value("label");
+//        std::cerr << "SVFileReader::addPointToDataset: ImageModel: frame = " << frame << ", image = " << image.toStdString() << ", label = " << label.toStdString() << ", ok = " << ok << std::endl;
+	im->addPoint(ImageModel::Point(frame, image, 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)
+{
+    EditableDenseThreeDimensionalModel *dtdm = 
+        dynamic_cast<EditableDenseThreeDimensionalModel *>
+	(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)
+{
+    EditableDenseThreeDimensionalModel *dtdm =
+        dynamic_cast<EditableDenseThreeDimensionalModel *>
+	(m_currentDataset);
+
+    bool warned = false;
+
+    if (dtdm) {
+	QStringList data = text.split(m_datasetSeparator);
+
+	DenseThreeDimensionalModel::Column values;
+
+	for (QStringList::iterator i = data.begin(); i != data.end(); ++i) {
+
+	    if (values.size() == dtdm->getHeight()) {
+		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);
+	    }
+	}
+
+	dtdm->setColumn(m_rowNumber, 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 (haveModel(modelId)) {
+        m_currentDerivedModel = m_models[modelId];
+    } else {
+        // we'll regenerate the model when the derivation element ends
+        m_currentDerivedModel = 0;
+    }
+    
+    m_currentDerivedModelId = modelId;
+    
+    int sourceId = 0;
+    bool sourceOk = false;
+    sourceId = attributes.value("source").trimmed().toInt(&sourceOk);
+
+    if (sourceOk && haveModel(sourceId)) {
+        m_currentTransformSource = m_models[sourceId];
+    } else {
+        m_currentTransformSource = m_document->getMainModel();
+    }
+
+    m_currentTransform = transform;
+    m_currentTransformConfiguration = "";
+
+    m_currentTransformContext = PluginTransform::ExecutionContext();
+
+    bool ok = false;
+    int channel = attributes.value("channel").trimmed().toInt(&ok);
+    if (ok) m_currentTransformContext.channel = channel;
+
+    int domain = attributes.value("domain").trimmed().toInt(&ok);
+    if (ok) m_currentTransformContext.domain = Vamp::Plugin::InputDomain(domain);
+
+    int stepSize = attributes.value("stepSize").trimmed().toInt(&ok);
+    if (ok) m_currentTransformContext.stepSize = stepSize;
+
+    int blockSize = attributes.value("blockSize").trimmed().toInt(&ok);
+    if (ok) m_currentTransformContext.blockSize = blockSize;
+
+    int windowType = attributes.value("windowType").trimmed().toInt(&ok);
+    if (ok) m_currentTransformContext.windowType = WindowType(windowType);
+
+    QString startFrameStr = attributes.value("startFrame");
+    QString durationStr = attributes.value("duration");
+
+    size_t startFrame = 0;
+    size_t duration = 0;
+
+    if (startFrameStr != "") {
+        startFrame = startFrameStr.trimmed().toInt(&ok);
+        if (!ok) startFrame = 0;
+    }
+    if (durationStr != "") {
+        duration = durationStr.trimmed().toInt(&ok);
+        if (!ok) duration = 0;
+    }
+
+    m_currentTransformContext.startFrame = startFrame;
+    m_currentTransformContext.duration = duration;
+
+    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 (haveModel(modelId)) {
+
+        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");
+        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_currentDerivedModelId < 0 && !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(XmlExportable::encodeEntities(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;
+}
+
+bool
+SVFileReader::readMeasurement(const QXmlAttributes &attributes)
+{
+    std::cerr << "SVFileReader::readMeasurement: inLayer "
+              << m_inLayer << ", layer " << m_currentLayer << std::endl;
+
+    if (!m_inLayer) {
+        std::cerr << "WARNING: SV-XML: Measurement found outside layer" << std::endl;
+        return false;
+    }
+
+    m_currentLayer->addMeasurementRect(attributes);
+    return true;
+}
+
+SVFileReaderPaneCallback::~SVFileReaderPaneCallback()
+{
+}
+