view plugin/PluginXml.cpp @ 76:af2725b5d6fe

* Implement harmonic cursor in spectrogram
* Implement layer export.  This doesn't quite do the right thing for the SV
  XML layer export yet -- it doesn't include layer display information, so
  when imported, it only creates an invisible model.  Could also do with
  fixing CSV file import so as to work correctly for note and text layers.

/* -*- 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 "PluginXml.h"

#include <QRegExp>
#include <QXmlAttributes>

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

#include "vamp-sdk/PluginBase.h"
#include "RealTimePluginInstance.h"

#include <iostream>

PluginXml::PluginXml(Vamp::PluginBase *plugin) :
    m_plugin(plugin)
{
}

PluginXml::~PluginXml() { }

QString
PluginXml::toXmlString(QString indent, QString extraAttributes) const
{
    QString s;
    s += indent;

    s += QString("<plugin name=\"%1\" description=\"%2\" maker=\"%3\" version=\"%4\" copyright=\"%5\" %6 ")
        .arg(encodeEntities(QString(m_plugin->getName().c_str())))
        .arg(encodeEntities(QString(m_plugin->getDescription().c_str())))
        .arg(encodeEntities(QString(m_plugin->getMaker().c_str())))
        .arg(m_plugin->getPluginVersion())
        .arg(encodeEntities(QString(m_plugin->getCopyright().c_str())))
        .arg(extraAttributes);

    if (!m_plugin->getPrograms().empty()) {
        s += QString("program=\"%1\" ")
            .arg(encodeEntities(m_plugin->getCurrentProgram().c_str()));
    }

    Vamp::PluginBase::ParameterList parameters =
        m_plugin->getParameterDescriptors();

    for (Vamp::PluginBase::ParameterList::const_iterator i = parameters.begin();
         i != parameters.end(); ++i) {
        s += QString("param-%1=\"%2\" ")
            .arg(stripInvalidParameterNameCharacters(QString(i->name.c_str())))
            .arg(m_plugin->getParameter(i->name));
    }

    RealTimePluginInstance *rtpi =
        dynamic_cast<RealTimePluginInstance *>(m_plugin);
    if (rtpi) {
        std::map<std::string, std::string> configurePairs =
            rtpi->getConfigurePairs();
        QString config;
        for (std::map<std::string, std::string>::iterator i = configurePairs.begin();
             i != configurePairs.end(); ++i) {
            QString key = i->first.c_str();
            QString value = i->second.c_str();
            key.replace(";", "[[SEMICOLON]]");
            key.replace("=", "[[EQUALS]]");
            value.replace(";", "[[SEMICOLON]]");
            value.replace("=", "[[EQUALS]]");
            if (config != "") config += ";";
            config += QString("%1=%2").arg(key).arg(value);
        }
        if (config != "") {
            s += QString("configuration=\"%1\" ")
                .arg(encodeEntities(config));
        }
    }

    s += "/>\n";
    return s;
}

#define CHECK_ATTRIBUTE(ATTRIBUTE, ACCESSOR) \
    QString ATTRIBUTE = attrs.value(#ATTRIBUTE); \
    if (ATTRIBUTE != "" && ATTRIBUTE != ACCESSOR().c_str()) { \
        std::cerr << "WARNING: PluginXml::setParameters: Plugin " \
                  << #ATTRIBUTE << " does not match (attributes have \"" \
                  << ATTRIBUTE.toStdString() << "\", my " \
                  << #ATTRIBUTE << " is \"" << ACCESSOR() << "\")" << std::endl; \
    }

void
PluginXml::setParameters(const QXmlAttributes &attrs)
{
    CHECK_ATTRIBUTE(name, m_plugin->getName);
    CHECK_ATTRIBUTE(description, m_plugin->getDescription);
    CHECK_ATTRIBUTE(maker, m_plugin->getMaker);
    CHECK_ATTRIBUTE(copyright, m_plugin->getCopyright);

    bool ok;
    int version = attrs.value("version").trimmed().toInt(&ok);
    if (ok && version != m_plugin->getPluginVersion()) {
        std::cerr << "WARNING: PluginXml::setParameters: Plugin version does not match (attributes have " << version << ", my version is " << m_plugin->getPluginVersion() << ")" << std::endl;
    }

    RealTimePluginInstance *rtpi =
        dynamic_cast<RealTimePluginInstance *>(m_plugin);
    if (rtpi) {
        QString config = attrs.value("configuration");
        if (config != "") {
            QStringList configList = config.split(";");
            for (QStringList::iterator i = configList.begin();
                 i != configList.end(); ++i) {
                QStringList kv = i->split("=");
                if (kv.count() < 2) {
                    std::cerr << "WARNING: PluginXml::setParameters: Malformed configure pair string: \"" << i->toStdString() << "\"" << std::endl;
                    continue;
                }
                QString key(kv[0]), value(kv[1]);
                key.replace("[[SEMICOLON]]", ";");
                key.replace("[[EQUALS]]", ";");
                value.replace("[[SEMICOLON]]", ";");
                value.replace("[[SEMICOLON]]", ";");
                rtpi->configure(key.toStdString(), value.toStdString());
            }
        }
    }

    if (!m_plugin->getPrograms().empty()) {
        m_plugin->selectProgram(attrs.value("program").toStdString());
    }

    Vamp::PluginBase::ParameterList parameters =
        m_plugin->getParameterDescriptors();

    for (Vamp::PluginBase::ParameterList::const_iterator i =
             parameters.begin(); i != parameters.end(); ++i) {

        QString name = QString("param-%1")
            .arg(stripInvalidParameterNameCharacters
                 (QString(i->name.c_str())));

        if (attrs.value(name) == "") {
            std::cerr << "PluginXml::setParameters: no parameter \"" << i->name << "\" (attribute \"" << name.toStdString() << "\")" << std::endl;
            continue;
        }

        bool ok;
        float value = attrs.value(name).trimmed().toFloat(&ok);
        if (ok) {
            m_plugin->setParameter(i->name, value);
        } else {
            std::cerr << "WARNING: PluginXml::setParameters: Invalid value \"" << attrs.value(name).toStdString() << "\" for parameter \"" << i->name << "\" (attribute \"" << name.toStdString() << "\")" << std::endl;
        }
    }
}

void
PluginXml::setParametersFromXml(QString xml)
{
    QDomDocument doc;

    QString error;
    int errorLine;
    int errorColumn;

    if (!doc.setContent(xml, false, &error, &errorLine, &errorColumn)) {
        std::cerr << "PluginXml::setParametersFromXml: 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 pluginElt = doc.firstChildElement("plugin");
    QDomNamedNodeMap attrNodes = pluginElt.attributes();
    QXmlAttributes attrs;

    for (unsigned int i = 0; i < attrNodes.length(); ++i) {
        QDomAttr attr = attrNodes.item(i).toAttr();
        if (attr.isNull()) continue;
        std::cerr << "Adding attribute \"" << attr.name().toStdString()
                  << "\" with value \"" << attr.value().toStdString() << "\"" << std::endl;
        attrs.append(attr.name(), "", "", attr.value());
    }

    setParameters(attrs);
}
    
QString
PluginXml::stripInvalidParameterNameCharacters(QString s) const
{
    s.replace(QRegExp("[^a-zA-Z0-9_]*"), "");
    return s;
}