# HG changeset patch
# User Chris Cannam
# Date 1394559035 0
# Node ID 4cbf8c6a462dd25ef0e6b12f7d22dbf3fcbec1e9
# Parent  862fe7b20df76ec3e57d1110c5a064940ae5de35# Parent  0c8218b2d84a172049d966c82c2064f5aa59c503
Merge from branch tonioni

diff -r 0c8218b2d84a -r 4cbf8c6a462d base/RealTime.cpp
--- a/base/RealTime.cpp	Wed Mar 05 18:10:27 2014 +0000
+++ b/base/RealTime.cpp	Tue Mar 11 17:30:35 2014 +0000
@@ -442,7 +442,7 @@
 {
     if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
     double s = time.sec + double(time.nsec + 1) / 1000000000.0;
-    return long(s * sampleRate);
+    return long(s * double(sampleRate));
 }
 
 RealTime
diff -r 0c8218b2d84a -r 4cbf8c6a462d rdf/SimpleSPARQLQuery.cpp
--- a/rdf/SimpleSPARQLQuery.cpp	Wed Mar 05 18:10:27 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,639 +0,0 @@
-/* -*- 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 2008 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 "SimpleSPARQLQuery.h"
-#include "base/ProgressReporter.h"
-#include "base/Profiler.h"
-
-#include <QMutex>
-#include <QMutexLocker>
-#include <QRegExp>
-
-#include <set>
-
-// Rather than including <redland.h> -- for some reason redland.h
-// includes <rasqal.h>, while the rasqal header actually gets
-// installed as <rasqal/rasqal.h> which breaks the inclusion all over
-// the place unless a very clever include path is set
-#include <rasqal/rasqal.h>
-#include <librdf.h>
-
-//#define DEBUG_SIMPLE_SPARQL_QUERY 1
-
-#include <iostream>
-
-using cerr;
-using endl;
-
-class WredlandWorldWrapper
-{
-public:
-    WredlandWorldWrapper();
-    ~WredlandWorldWrapper();
-
-    bool isOK() const;
-
-    bool loadUriIntoDefaultModel(QString uriString, QString &errorString);
-        
-    librdf_world *getWorld() { return m_world; }
-    const librdf_world *getWorld() const { return m_world; }
-        
-    librdf_model *getDefaultModel() { return m_defaultModel; }
-    const librdf_model *getDefaultModel() const { return m_defaultModel; }
-
-    librdf_model *getModel(QString fromUri);
-    void freeModel(QString forUri);
-
-private:
-    QMutex m_mutex;
-
-    librdf_world *m_world;
-    librdf_storage *m_defaultStorage;
-    librdf_model *m_defaultModel;
-
-    std::set<QString> m_defaultModelUris;
-
-    std::map<QString, librdf_storage *> m_ownStorageUris;
-    std::map<QString, librdf_model *> m_ownModelUris;
-
-    bool loadUri(librdf_model *model, QString uri, QString &errorString);
-};
-
-WredlandWorldWrapper::WredlandWorldWrapper() :
-    m_world(0), m_defaultStorage(0), m_defaultModel(0)
-{
-    m_world = librdf_new_world();
-    if (!m_world) {
-        cerr << "SimpleSPARQLQuery: ERROR: Failed to create LIBRDF world!" << endl;
-        return;
-    }
-    librdf_world_open(m_world);
-
-    m_defaultStorage = librdf_new_storage(m_world, "trees", NULL, NULL);
-    if (!m_defaultStorage) {
-        cerr << "SimpleSPARQLQuery: WARNING: Failed to initialise Redland trees datastore, falling back to memory store" << endl;
-        m_defaultStorage = librdf_new_storage(m_world, NULL, NULL, NULL);
-        if (!m_defaultStorage) {
-            cerr << "SimpleSPARQLQuery: ERROR: Failed to initialise Redland memory datastore" << endl;
-            return;
-        }                
-    }
-    m_defaultModel = librdf_new_model(m_world, m_defaultStorage, NULL);
-    if (!m_defaultModel) {
-        cerr << "SimpleSPARQLQuery: ERROR: Failed to initialise Redland data model" << endl;
-        return;
-    }
-}
-
-WredlandWorldWrapper::~WredlandWorldWrapper()
-{
-/*!!! This is a static singleton; destroying it while there are
-      queries outstanding can be problematic, it appears, and since
-      the storage is non-persistent there shouldn't be any need to
-      destroy it explicitly, except for the sake of tidiness.
-
-    while (!m_ownModelUris.empty()) {
-        librdf_free_model(m_ownModelUris.begin()->second);
-        m_ownModelUris.erase(m_ownModelUris.begin());
-    }
-    while (!m_ownStorageUris.empty()) {
-        librdf_free_storage(m_ownStorageUris.begin()->second);
-        m_ownStorageUris.erase(m_ownStorageUris.begin());
-    }
-    if (m_defaultModel) librdf_free_model(m_defaultModel);
-    if (m_defaultStorage) librdf_free_storage(m_defaultStorage);
-    if (m_world) librdf_free_world(m_world);
-*/
-}
-
-bool
-WredlandWorldWrapper::isOK() const {
-    return (m_defaultModel != 0); 
-}
-
-bool
-WredlandWorldWrapper::loadUriIntoDefaultModel(QString uriString, QString &errorString)
-{
-    QMutexLocker locker(&m_mutex);
-    
-    if (m_defaultModelUris.find(uriString) != m_defaultModelUris.end()) {
-        return true;
-    }
-    
-    if (loadUri(m_defaultModel, uriString, errorString)) {
-        m_defaultModelUris.insert(uriString);
-        return true;
-    } else {
-        return false;
-    }
-}
-
-librdf_model *
-WredlandWorldWrapper::getModel(QString fromUri)
-{
-    QMutexLocker locker(&m_mutex);
-    if (fromUri == "") {
-        return getDefaultModel();
-    }
-    if (m_ownModelUris.find(fromUri) != m_ownModelUris.end()) {
-        return m_ownModelUris[fromUri];
-    }
-    librdf_storage *storage = librdf_new_storage(m_world, "trees", NULL, NULL);
-    if (!storage) { // don't warn here, we probably already did it in main ctor
-        storage = librdf_new_storage(m_world, NULL, NULL, NULL);
-    }
-    librdf_model *model = librdf_new_model(m_world, storage, NULL);
-    if (!model) {
-        cerr << "SimpleSPARQLQuery: ERROR: Failed to create new model" << endl;
-        librdf_free_storage(storage);
-        return 0;
-    }
-    QString err;
-    if (!loadUri(model, fromUri, err)) {
-        cerr << "SimpleSPARQLQuery: ERROR: Failed to parse into new model: " << err << endl;
-        librdf_free_model(model);
-        librdf_free_storage(storage);
-        m_ownModelUris[fromUri] = 0;
-        return 0;
-    }
-    m_ownModelUris[fromUri] = model;
-    m_ownStorageUris[fromUri] = storage;
-    return model;
-}
-
-void
-WredlandWorldWrapper::freeModel(QString forUri)
-{
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    SVDEBUG << "SimpleSPARQLQuery::freeModel: Model uri = \"" << forUri << "\"" << endl;
-#endif
-
-    QMutexLocker locker(&m_mutex);
-    if (forUri == "") {
-        SVDEBUG << "SimpleSPARQLQuery::freeModel: ERROR: Can't free default model" << endl;
-        return;
-    }
-    if (m_ownModelUris.find(forUri) == m_ownModelUris.end()) {
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-        SVDEBUG << "SimpleSPARQLQuery::freeModel: NOTE: Unknown or already-freed model (uri = \"" << forUri << "\")" << endl;
-#endif
-        return;
-    }
-
-    librdf_model *model = m_ownModelUris[forUri];
-    if (model) librdf_free_model(model);
-    m_ownModelUris.erase(forUri);
-
-    if (m_ownStorageUris.find(forUri) != m_ownStorageUris.end()) {
-        librdf_storage *storage = m_ownStorageUris[forUri];
-        if (storage) librdf_free_storage(storage);
-        m_ownStorageUris.erase(forUri);
-    }        
-}
-
-bool
-WredlandWorldWrapper::loadUri(librdf_model *model, QString uri, QString &errorString)
-{
-    librdf_uri *luri = librdf_new_uri
-        (m_world, (const unsigned char *)uri.toUtf8().data());
-    if (!luri) {
-        errorString = "Failed to construct librdf_uri!";
-        return false;
-    }
-    
-    librdf_parser *parser = librdf_new_parser(m_world, "guess", NULL, NULL);
-    if (!parser) {
-        errorString = "Failed to initialise Redland parser";
-        return false;
-    }
-
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY    
-    cerr << "About to parse \"" << uri << "\"" << endl;
-#endif
-    
-    Profiler p("SimpleSPARQLQuery: Parse URI into LIBRDF model");
-    
-    if (librdf_parser_parse_into_model(parser, luri, NULL, model)) {
-        
-        errorString = QString("Failed to parse RDF from URI \"%1\"")
-            .arg(uri);
-        librdf_free_parser(parser);
-        return false;
-        
-    } else {
-        
-        librdf_free_parser(parser);
-        return true;
-    }
-}        
-
-
-class SimpleSPARQLQuery::Impl
-{
-public:
-    Impl(SimpleSPARQLQuery::QueryType, QString query);
-    ~Impl();
-
-    static bool addSourceToModel(QString sourceUri);
-    static void closeSingleSource(QString sourceUri);
-
-    void setProgressReporter(ProgressReporter *reporter) { m_reporter = reporter; }
-    bool wasCancelled() const { return m_cancelled; }
-
-    ResultList execute();
-
-    bool isOK() const;
-    QString getErrorString() const;
-
-protected:
-    static QMutex m_mutex;
-
-    static WredlandWorldWrapper *m_redland;
-
-    ResultList executeDirectParser();
-    ResultList executeDatastore();
-    ResultList executeFor(QString modelUri);
-
-    QueryType m_type;
-    QString m_query;
-    QString m_errorString;
-    ProgressReporter *m_reporter;
-    bool m_cancelled;
-};
-
-WredlandWorldWrapper *SimpleSPARQLQuery::Impl::m_redland = 0;
-
-QMutex SimpleSPARQLQuery::Impl::m_mutex;
-
-SimpleSPARQLQuery::SimpleSPARQLQuery(QueryType type, QString query) :
-    m_impl(new Impl(type, query))
-{
-}
-
-SimpleSPARQLQuery::~SimpleSPARQLQuery() 
-{
-    delete m_impl;
-}
-
-void
-SimpleSPARQLQuery::setProgressReporter(ProgressReporter *reporter)
-{
-    m_impl->setProgressReporter(reporter);
-}
-
-bool
-SimpleSPARQLQuery::wasCancelled() const
-{
-    return m_impl->wasCancelled();
-}
-
-SimpleSPARQLQuery::ResultList
-SimpleSPARQLQuery::execute()
-{
-    return m_impl->execute();
-}
-
-bool
-SimpleSPARQLQuery::isOK() const
-{
-    return m_impl->isOK();
-}
-
-QString
-SimpleSPARQLQuery::getErrorString() const
-{
-    return m_impl->getErrorString();
-}
-
-bool
-SimpleSPARQLQuery::addSourceToModel(QString sourceUri)
-{
-    return SimpleSPARQLQuery::Impl::addSourceToModel(sourceUri);
-}
-
-void
-SimpleSPARQLQuery::closeSingleSource(QString sourceUri)
-{
-    SimpleSPARQLQuery::Impl::closeSingleSource(sourceUri);
-}
-
-SimpleSPARQLQuery::Impl::Impl(QueryType type, QString query) :
-    m_type(type),
-    m_query(query),
-    m_reporter(0),
-    m_cancelled(false)
-{
-}
-
-SimpleSPARQLQuery::Impl::~Impl()
-{
-}
-
-bool
-SimpleSPARQLQuery::Impl::isOK() const
-{
-    return (m_errorString == "");
-}
-
-QString
-SimpleSPARQLQuery::Impl::getErrorString() const
-{
-    return m_errorString;
-}
-
-SimpleSPARQLQuery::ResultList
-SimpleSPARQLQuery::Impl::execute()
-{
-    ResultList list;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_redland) {
-        m_redland = new WredlandWorldWrapper();
-    }
-
-    if (!m_redland->isOK()) {
-        cerr << "ERROR: SimpleSPARQLQuery::execute: Failed to initialise Redland datastore" << endl;
-        return list;
-    }
-
-    if (m_type == QueryFromSingleSource) {
-        return executeDirectParser();
-    } else {
-        return executeDatastore();
-    }
-
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    if (m_errorString != "") {
-        cerr << "SimpleSPARQLQuery::execute: error returned: \""
-                  << m_errorString << "\"" << endl;
-    }
-#endif
-}
-
-SimpleSPARQLQuery::ResultList
-SimpleSPARQLQuery::Impl::executeDirectParser()
-{
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    SVDEBUG << "SimpleSPARQLQuery::executeDirectParser: Query is: \"" << m_query << "\"" << endl;
-#endif
-
-    ResultList list;
-
-    Profiler profiler("SimpleSPARQLQuery::executeDirectParser");
-
-    static QRegExp fromRE("from\\s+<([^>]+)>", Qt::CaseInsensitive);
-    QString fromUri;
-
-    if (fromRE.indexIn(m_query) < 0) {
-        SVDEBUG << "SimpleSPARQLQuery::executeDirectParser: Query contains no FROM clause, nothing to parse from" << endl;
-        return list;
-    } else {
-        fromUri = fromRE.cap(1);
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-        SVDEBUG << "SimpleSPARQLQuery::executeDirectParser: FROM URI is <"
-                  << fromUri << ">" << endl;
-#endif
-    }
-
-    return executeFor(fromUri);
-}
-
-SimpleSPARQLQuery::ResultList
-SimpleSPARQLQuery::Impl::executeDatastore()
-{
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    SVDEBUG << "SimpleSPARQLQuery::executeDatastore: Query is: \"" << m_query << "\"" << endl;
-#endif
-
-    ResultList list;
-
-    Profiler profiler("SimpleSPARQLQuery::executeDatastore");
-
-    return executeFor("");
-}
-
-SimpleSPARQLQuery::ResultList
-SimpleSPARQLQuery::Impl::executeFor(QString modelUri)
-{
-    ResultList list;
-    librdf_query *query;
-
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    static std::map<QString, int> counter;
-    if (counter.find(m_query) == counter.end()) counter[m_query] = 1;
-    else ++counter[m_query];
-    cerr << "Counter for this query: " << counter[m_query] << endl;
-    cerr << "Base URI is: \"" << modelUri << "\"" << endl;
-#endif
-
-    {
-        Profiler p("SimpleSPARQLQuery: Prepare LIBRDF query");
-        query = librdf_new_query
-            (m_redland->getWorld(), "sparql", NULL,
-             (const unsigned char *)m_query.toUtf8().data(), NULL);
-    }
-    
-    if (!query) {
-        m_errorString = "Failed to construct query";
-        return list;
-    }
-
-    librdf_query_results *results;
-    {
-        Profiler p("SimpleSPARQLQuery: Execute LIBRDF query");
-        results = librdf_query_execute(query, m_redland->getModel(modelUri));
-    }
-
-    if (!results) {
-        m_errorString = "RDF query failed";
-        librdf_free_query(query);
-        return list;
-    }
-
-    if (!librdf_query_results_is_bindings(results)) {
-        m_errorString = "RDF query returned non-bindings results";
-        librdf_free_query_results(results);
-        librdf_free_query(query);
-        return list;
-    }
-    
-    int resultCount = 0;
-    int resultTotal = librdf_query_results_get_count(results); // probably wrong
-    m_cancelled = false;
-
-    while (!librdf_query_results_finished(results)) {
-
-        int count = librdf_query_results_get_bindings_count(results);
-
-        KeyValueMap resultmap;
-
-        for (int i = 0; i < count; ++i) {
-
-            const char *name =
-                librdf_query_results_get_binding_name(results, i);
-
-            if (!name) {
-                cerr << "WARNING: Result " << i << " of query has no name" << endl;
-                continue;
-            }
-
-            librdf_node *node =
-                librdf_query_results_get_binding_value(results, i);
-
-            QString key = (const char *)name;
-
-            if (!node) {
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-                cerr << i << ". " << key << " -> (nil)" << endl;
-#endif
-                resultmap[key] = Value();
-                continue;
-            }
-
-            ValueType type = LiteralValue;
-            QString text;
-
-            if (librdf_node_is_resource(node)) {
-
-                type = URIValue;
-                librdf_uri *uri = librdf_node_get_uri(node);
-                const char *us = (const char *)librdf_uri_as_string(uri);
-
-                if (!us) {
-                    cerr << "WARNING: Result " << i << " of query claims URI type, but has null URI" << endl;
-                } else {
-                    text = us;
-                }
-
-            } else if (librdf_node_is_literal(node)) {
-
-                type = LiteralValue;
-
-                const char *lit = (const char *)librdf_node_get_literal_value(node);
-                if (!lit) {
-                    cerr << "WARNING: Result " << i << " of query claims literal type, but has no literal" << endl;
-                } else {
-                    text = lit;
-                }
-
-            } else if (librdf_node_is_blank(node)) {
-
-                type = BlankValue;
-
-                const char *lit = (const char *)librdf_node_get_literal_value(node);
-                if (lit) text = lit;
-
-            } else {
-
-                cerr << "SimpleSPARQLQuery: LIBRDF query returned unknown node type (not resource, literal, or blank)" << endl;
-            }
-
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-            cerr << i << ". " << key << " -> " << text << " (type " << type << ")" << endl;
-#endif
-
-            resultmap[key] = Value(type, text);
-
-//            librdf_free_node(node);
-        }
-
-        list.push_back(resultmap);
-
-        librdf_query_results_next(results);
-
-        resultCount++;
-
-        if (m_reporter) {
-            if (resultCount >= resultTotal) {
-                if (m_reporter->isDefinite()) m_reporter->setDefinite(false);
-                m_reporter->setProgress(resultCount);
-            } else {
-                m_reporter->setProgress((resultCount * 100) / resultTotal);
-            }
-
-            if (m_reporter->wasCancelled()) {
-                m_cancelled = true;
-                break;
-            }
-        }
-    }
-
-    librdf_free_query_results(results);
-    librdf_free_query(query);
-
-#ifdef DEBUG_SIMPLE_SPARQL_QUERY
-    SVDEBUG << "SimpleSPARQLQuery::executeDatastore: All results retrieved (" << resultCount << " of them)" << endl;
-#endif
-
-    return list;
-}
-
-bool
-SimpleSPARQLQuery::Impl::addSourceToModel(QString sourceUri)
-{
-    QString err;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_redland) {
-        m_redland = new WredlandWorldWrapper();
-    }
-
-    if (!m_redland->isOK()) {
-        cerr << "SimpleSPARQLQuery::addSourceToModel: Failed to initialise Redland datastore" << endl;
-        return false;
-    }
-
-    if (!m_redland->loadUriIntoDefaultModel(sourceUri, err)) {
-        cerr << "SimpleSPARQLQuery::addSourceToModel: Failed to add source URI \"" << sourceUri << ": " << err << endl;
-        return false;
-    }
-    return true;
-}
-
-void
-SimpleSPARQLQuery::Impl::closeSingleSource(QString sourceUri)
-{
-    QMutexLocker locker(&m_mutex);
-
-    m_redland->freeModel(sourceUri);
-}
-
-SimpleSPARQLQuery::Value
-SimpleSPARQLQuery::singleResultQuery(QueryType type,
-                                     QString query, QString binding)
-{
-    SimpleSPARQLQuery q(type, query);
-    ResultList results = q.execute();
-    if (!q.isOK()) {
-        cerr << "SimpleSPARQLQuery::singleResultQuery: ERROR: "
-             << q.getErrorString() << endl;
-        return Value();
-    }
-    if (results.empty()) {
-        return Value();
-    }
-    for (int i = 0; i < results.size(); ++i) {
-        if (results[i].find(binding) != results[i].end() &&
-            results[i][binding].type != NoValue) {
-            return results[i][binding];
-        }
-    }
-    return Value();
-}
-
-
-
diff -r 0c8218b2d84a -r 4cbf8c6a462d rdf/SimpleSPARQLQuery.h
--- a/rdf/SimpleSPARQLQuery.h	Wed Mar 05 18:10:27 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,117 +0,0 @@
-/* -*- 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 2008 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.
-*/
-
-#ifndef _SIMPLE_SPARQL_QUERY_H_
-#define _SIMPLE_SPARQL_QUERY_H_
-
-#ifdef NOT_DEFINED
-
-#include <QString>
-#include <map>
-#include <vector>
-
-#include "base/Debug.h"
-
-class ProgressReporter;
-
-class SimpleSPARQLQuery
-{
-public:
-    enum ValueType { NoValue, URIValue, LiteralValue, BlankValue };
-
-    struct Value {
-        Value() : type(NoValue), value() { }
-        Value(ValueType t, QString v) : type(t), value(v) { }
-        ValueType type;
-        QString value;
-    };
-
-    typedef std::map<QString, Value> KeyValueMap;
-    typedef std::vector<KeyValueMap> ResultList;
-
-    /**
-     * QueryType specifies the context in which the query will be
-     * evaluated.  SimpleSPARQLQuery maintains a general global data
-     * model, into which data can be loaded using addSourceToModel(),
-     * as well as permitting one-time queries directly on data sources
-     * identified by URL.
-     *
-     * The query type QueryFromModel indicates a query to be evaluated
-     * over the general global model; the query type
-     * QueryFromSingleSource indicates that the query should be
-     * evaluated in the context of a model generated solely by parsing
-     * the FROM url found in the query.
-     *
-     * Even in QueryFromSingleSource mode, the parsed data remains in
-     * memory and will be reused in subsequent queries with the same
-     * mode and FROM url.  To release data loaded in this way once all
-     * queries across it are complete, pass the said FROM url to
-     * closeSingleSource().
-     */
-    enum QueryType {
-        QueryFromModel,
-        QueryFromSingleSource
-    };
-
-    /**
-     * Construct a query of the given type (indicating the data model
-     * context for the query) using the given SPARQL query content.
-     */
-    SimpleSPARQLQuery(QueryType type, QString query);
-    ~SimpleSPARQLQuery();
-
-    /**
-     * Add the given URI to the general global model used for
-     * QueryFromModel queries.
-     */
-    static bool addSourceToModel(QString sourceUri);
-
-    /**
-     * Release any data that has been loaded from the given source as
-     * part of a QueryFromSingleSource query with this source in the
-     * FROM clause.  Note this will not prevent any subsequent queries
-     * on the source from working -- it will just make them slower as
-     * the data will need to be re-parsed.
-     */
-    static void closeSingleSource(QString sourceUri);
-
-    void setProgressReporter(ProgressReporter *reporter);
-    bool wasCancelled() const;
-    
-    ResultList execute();
-
-    bool isOK() const;
-    QString getErrorString() const;
-
-    /**
-     * Construct and execute a query, and return the first result
-     * value for the given binding.
-     */
-    static Value singleResultQuery(QueryType type,
-                                   QString query,
-                                   QString binding);
-
-protected:
-    class Impl;
-    Impl *m_impl;
-
-private:
-    SimpleSPARQLQuery(const SimpleSPARQLQuery &); // not provided
-    SimpleSPARQLQuery &operator=(const SimpleSPARQLQuery &); // not provided
-};
-
-#endif
-
-#endif
diff -r 0c8218b2d84a -r 4cbf8c6a462d transform/FeatureExtractionModelTransformer.cpp
--- a/transform/FeatureExtractionModelTransformer.cpp	Wed Mar 05 18:10:27 2014 +0000
+++ b/transform/FeatureExtractionModelTransformer.cpp	Tue Mar 11 17:30:35 2014 +0000
@@ -822,7 +822,7 @@
 	binCount = m_descriptors[n]->binCount;
     }
 
-    size_t frame = blockFrame;
+    int frame = blockFrame;
 
     if (m_descriptors[n]->sampleType ==
 	Vamp::Plugin::OutputDescriptor::VariableSampleRate) {
@@ -847,11 +847,26 @@
             m_fixedRateFeatureNos[n] =
                 lrint(ts.toDouble() * m_descriptors[n]->sampleRate);
         }
+
+//        cerr << "m_fixedRateFeatureNo = " << m_fixedRateFeatureNo 
+//             << ", m_descriptor->sampleRate = " << m_descriptor->sampleRate
+//             << ", inputRate = " << inputRate
+//             << " giving frame = ";
  
         frame = lrintf((m_fixedRateFeatureNos[n] / m_descriptors[n]->sampleRate)
-                       * inputRate);
+                       * int(inputRate));
     }
-	
+
+    if (frame < 0) {
+        cerr
+            << "WARNING: FeatureExtractionModelTransformer::addFeature: "
+            << "Negative frame counts are not supported (frame = " << frame
+            << " from timestamp " << feature.timestamp
+            << "), dropping feature" 
+            << endl;
+        return;
+    }
+
     // Rather than repeat the complicated tests from the constructor
     // to determine what sort of model we must be adding the features
     // to, we instead test what sort of model the constructor decided