view transform/Transform.cpp @ 490:c3fb8258e34d

* Make it possible to import an entire session from an RDF document.
  However, at the moment the timings of events appear to be constrained
  by how far the audio decoder has got through its audio file at the
  time the event is queried -- need to investigate.

/* -*- 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 2006-2007 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 "Transform.h"

#include "plugin/PluginIdentifier.h"

#include "plugin/FeatureExtractionPluginFactory.h"

#include <QXmlAttributes>

#include <QDomDocument>
#include <QDomElement>
#include <QDomNamedNodeMap>
#include <QDomAttr>

#include <QTextStream>

#include <iostream>

Transform::Transform() :
    m_stepSize(0),
    m_blockSize(0),
    m_windowType(HanningWindow),
    m_sampleRate(0)
{
}

Transform::Transform(QString xml) :
    m_stepSize(0),
    m_blockSize(0),
    m_windowType(HanningWindow),
    m_sampleRate(0)
{
    QDomDocument doc;
    
    QString error;
    int errorLine;
    int errorColumn;

    if (!doc.setContent(xml, false, &error, &errorLine, &errorColumn)) {
        std::cerr << "Transform::Transform: Error in parsing XML: "
                  << error.toStdString() << " at line " << errorLine
                  << ", column " << errorColumn << std::endl;
        std::cerr << "Input follows:" << std::endl;
        std::cerr << xml.toStdString() << std::endl;
        std::cerr << "Input ends." << std::endl;
        return;
    }
    
    QDomElement transformElt = doc.firstChildElement("transform");
    QDomNamedNodeMap attrNodes = transformElt.attributes();
    QXmlAttributes attrs;

    for (unsigned int i = 0; i < attrNodes.length(); ++i) {
        QDomAttr attr = attrNodes.item(i).toAttr();
        if (!attr.isNull()) attrs.append(attr.name(), "", "", attr.value());
    }

    setFromXmlAttributes(attrs);

    for (QDomElement paramElt = transformElt.firstChildElement("parameter");
         !paramElt.isNull();
         paramElt = paramElt.nextSiblingElement("parameter")) {

        QDomNamedNodeMap paramAttrs = paramElt.attributes();

        QDomAttr nameAttr = paramAttrs.namedItem("name").toAttr();
        if (nameAttr.isNull() || nameAttr.value() == "") continue;
        
        QDomAttr valueAttr = paramAttrs.namedItem("value").toAttr();
        if (valueAttr.isNull() || valueAttr.value() == "") continue;

        setParameter(nameAttr.value(), valueAttr.value().toFloat());
    }

    for (QDomElement configElt = transformElt.firstChildElement("configuration");
         !configElt.isNull();
         configElt = configElt.nextSiblingElement("configuration")) {

        QDomNamedNodeMap configAttrs = configElt.attributes();

        QDomAttr nameAttr = configAttrs.namedItem("name").toAttr();
        if (nameAttr.isNull() || nameAttr.value() == "") continue;
        
        QDomAttr valueAttr = configAttrs.namedItem("value").toAttr();
        if (valueAttr.isNull() || valueAttr.value() == "") continue;

        setConfigurationValue(nameAttr.value(), valueAttr.value());
    }
}

Transform::~Transform()
{
}

bool
Transform::operator==(const Transform &t) const
{
    return 
        m_id == t.m_id &&
        m_parameters == t.m_parameters &&
        m_configuration == t.m_configuration &&
        m_program == t.m_program &&
        m_stepSize == t.m_stepSize &&
        m_blockSize == t.m_blockSize &&
        m_windowType == t.m_windowType &&
        m_startTime == t.m_startTime &&
        m_duration == t.m_duration &&
        m_sampleRate == t.m_sampleRate;
}

bool
Transform::operator<(const Transform &t) const
{
    if (m_id != t.m_id) {
        return m_id < t.m_id;
    }
    if (m_parameters != t.m_parameters) {
        return mapLessThan<QString, float>(m_parameters, t.m_parameters);
    }
    if (m_configuration != t.m_configuration) {
        return mapLessThan<QString, QString>(m_configuration, t.m_configuration);
    }
    if (m_program != t.m_program) {
        return m_program < t.m_program;
    }
    if (m_stepSize != t.m_stepSize) {
        return m_stepSize < t.m_stepSize;
    }
    if (m_blockSize != t.m_blockSize) {
        return m_blockSize < t.m_blockSize;
    }
    if (m_windowType != t.m_windowType) {
        return m_windowType < t.m_windowType;
    }
    if (m_startTime != t.m_startTime) {
        return m_startTime < t.m_startTime;
    }
    if (m_duration != t.m_duration) {
        return m_duration < t.m_duration;
    }
    if (m_sampleRate != t.m_sampleRate) {
        return m_sampleRate < t.m_sampleRate;
    }
    return false;
}

void
Transform::setIdentifier(TransformId id)
{
    m_id = id;
}

TransformId
Transform::getIdentifier() const
{
    return m_id;
}

QString
Transform::createIdentifier(QString type, QString soName, QString label,
                            QString output)
{
    QString pluginId = PluginIdentifier::createIdentifier(type, soName, label);
    return pluginId + ":" + output;
}

void
Transform::parseIdentifier(QString identifier,
                           QString &type, QString &soName,
                           QString &label, QString &output)
{
    output = identifier.section(':', 3);
    PluginIdentifier::parseIdentifier(identifier.section(':', 0, 2),
                                      type, soName, label);
}

Transform::Type
Transform::getType() const
{
    if (FeatureExtractionPluginFactory::instanceFor(getPluginIdentifier())) {
        return FeatureExtraction;
    } else {
        // We don't have an unknown/invalid return value, so always
        // return this
        return RealTimeEffect;
    }
}

QString
Transform::getPluginIdentifier() const
{
    return m_id.section(':', 0, 2);
}

QString
Transform::getOutput() const
{
    return m_id.section(':', 3);
}

void
Transform::setPluginIdentifier(QString pluginIdentifier)
{
    m_id = pluginIdentifier + ':' + getOutput();
}

void
Transform::setOutput(QString output)
{
    m_id = getPluginIdentifier() + ':' + output;
}

TransformId
Transform::getIdentifierForPluginOutput(QString pluginIdentifier,
                                        QString output)
{
    return pluginIdentifier + ':' + output;
}

const Transform::ParameterMap &
Transform::getParameters() const
{
    return m_parameters;
}

void
Transform::setParameters(const ParameterMap &pm)
{
    m_parameters = pm;
}

void
Transform::setParameter(QString name, float value)
{
//    std::cerr << "Transform::setParameter(" << name.toStdString()
//              << ") -> " << value << std::endl;
    m_parameters[name] = value;
}

const Transform::ConfigurationMap &
Transform::getConfiguration() const
{
    return m_configuration;
}

void
Transform::setConfiguration(const ConfigurationMap &cm)
{
    m_configuration = cm;
}

void
Transform::setConfigurationValue(QString name, QString value)
{
    std::cerr << "Transform::setConfigurationValue(" << name.toStdString()
              << ") -> " << value.toStdString() << std::endl;
    m_configuration[name] = value;
}

QString
Transform::getPluginVersion() const
{
    return m_pluginVersion;
}

void
Transform::setPluginVersion(QString version)
{
    m_pluginVersion = version;
}

QString
Transform::getProgram() const
{
    return m_program;
}

void
Transform::setProgram(QString program)
{
    m_program = program;
}

    
size_t
Transform::getStepSize() const
{
    return m_stepSize;
}

void
Transform::setStepSize(size_t s)
{
    m_stepSize = s;
}
    
size_t
Transform::getBlockSize() const
{
    return m_blockSize;
}

void
Transform::setBlockSize(size_t s)
{
    m_blockSize = s;
}

WindowType
Transform::getWindowType() const
{
    return m_windowType;
}

void
Transform::setWindowType(WindowType type)
{
    m_windowType = type;
}

RealTime
Transform::getStartTime() const
{
    return m_startTime;
}

void
Transform::setStartTime(RealTime t)
{
    m_startTime = t;
}

RealTime
Transform::getDuration() const
{
    return m_duration;
}

void
Transform::setDuration(RealTime d)
{
    m_duration = d;
}
    
float
Transform::getSampleRate() const
{
    return m_sampleRate;
}

void
Transform::setSampleRate(float rate)
{
    m_sampleRate = rate;
}

void
Transform::toXml(QTextStream &out, QString indent, QString extraAttributes) const
{
    out << indent;

    bool haveContent = true;
    if (m_parameters.empty() && m_configuration.empty()) haveContent = false;

    out << QString("<transform\n    id=\"%1\"\n    pluginVersion=\"%2\"\n    program=\"%3\"\n    stepSize=\"%4\"\n    blockSize=\"%5\"\n    windowType=\"%6\"\n    startTime=\"%7\"\n    duration=\"%8\"\n    sampleRate=\"%9\"")
        .arg(encodeEntities(m_id))
        .arg(encodeEntities(m_pluginVersion))
        .arg(encodeEntities(m_program))
        .arg(m_stepSize)
        .arg(m_blockSize)
        .arg(encodeEntities(Window<float>::getNameForType(m_windowType).c_str()))
        .arg(encodeEntities(m_startTime.toString().c_str()))
        .arg(encodeEntities(m_duration.toString().c_str()))
        .arg(m_sampleRate);

    if (extraAttributes != "") {
        out << " " << extraAttributes;
    }

    if (haveContent) {

        out << ">\n";

        for (ParameterMap::const_iterator i = m_parameters.begin();
             i != m_parameters.end(); ++i) {
            out << indent << "  "
                << QString("<parameter name=\"%1\" value=\"%2\"/>\n")
                .arg(encodeEntities(i->first))
                .arg(i->second);
        }
        
        for (ConfigurationMap::const_iterator i = m_configuration.begin();
             i != m_configuration.end(); ++i) {
            out << indent << "  "
                << QString("<configuration name=\"%1\" value=\"%2\"/>\n")
                .arg(encodeEntities(i->first))
                .arg(encodeEntities(i->second));
        }

        out << indent << "</transform>\n";

    } else {

        out << "/>\n";
    }
}

void
Transform::setFromXmlAttributes(const QXmlAttributes &attrs)
{
    if (attrs.value("id") != "") {
        setIdentifier(attrs.value("id"));
    }

    if (attrs.value("pluginVersion") != "") {
        setPluginVersion(attrs.value("pluginVersion"));
    }

    if (attrs.value("program") != "") {
        setProgram(attrs.value("program"));
    }

    if (attrs.value("stepSize") != "") {
        setStepSize(attrs.value("stepSize").toInt());
    }

    if (attrs.value("blockSize") != "") {
        setBlockSize(attrs.value("blockSize").toInt());
    }

    if (attrs.value("windowType") != "") {
        setWindowType(Window<float>::getTypeForName
                      (attrs.value("windowType").toStdString()));
    }

    if (attrs.value("startTime") != "") {
        setStartTime(RealTime::fromString(attrs.value("startTime").toStdString()));
    }

    if (attrs.value("duration") != "") {
        setStartTime(RealTime::fromString(attrs.value("duration").toStdString()));
    }
    
    if (attrs.value("sampleRate") != "") {
        setSampleRate(attrs.value("sampleRate").toFloat());
    }
}