MuseScore/libmscore/synthesizerstate.cpp

//=============================================================================
//  MuseScore
//  Music Composition & Notation
//
//  Copyright (C) 2012 Werner Schweer
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License version 2
//  as published by the Free Software Foundation and appearing in
//  the file LICENCE.GPL
//=============================================================================

#include "synthesizerstate.h"
#include "xml.h"

namespace Ms {
//---------------------------------------------------------
//   write
//---------------------------------------------------------

void SynthesizerState::write(XmlWriter& xml, bool force /* = false */) const
{
    if (isDefault() && !force) {
        return;
    }

    xml.stag("Synthesizer");
    for (const SynthesizerGroup& g : *this) {
        if (!g.name().isEmpty()) {
            xml.stag(g.name());
            for (const IdValue& v : g) {
                xml.tag(QString("val id=\"%1\"").arg(v.id), v.data);
            }
            xml.etag();
        }
    }
    xml.etag();
}

//---------------------------------------------------------
//   read
//---------------------------------------------------------

void SynthesizerState::read(XmlReader& e)
{
    std::list<SynthesizerGroup> tempGroups;
    while (e.readNextStartElement()) {
        SynthesizerGroup group;
        group.setName(e.name().toString());

        while (e.readNextStartElement()) {
            if (e.name() == "val") {
                int id = e.intAttribute("id");
                group.push_back(IdValue(id, e.readElementText()));
            } else {
                e.unknown();
            }
        }
        tempGroups.push_back(group);
    }

    if (!tempGroups.empty()) {
        // Replace any previously set state if we have read a new state
        swap(tempGroups);
        setIsDefault(false);
    }
}

//---------------------------------------------------------
//   group
///  Get SynthesizerGroup by name
//---------------------------------------------------------

SynthesizerGroup SynthesizerState::group(const QString& name) const
{
    for (const SynthesizerGroup& g : *this) {
        if (g.name() == name) {
            return g;
        }
    }
    SynthesizerGroup sg;
    return sg;
}

//---------------------------------------------------------
//   isDefaultSynthSoundfont
///  check if synthesizer state uses default synth and
///  default font only
//---------------------------------------------------------

bool SynthesizerState::isDefaultSynthSoundfont()
{
    SynthesizerGroup fluid = group("Fluid");
    SynthesizerGroup zerberus = group("Zerberus");
    if (zerberus.size() == 0 && fluid.size() == 1) {
        if (fluid.front().data == "MuseScore_General.sf3") {
            return true;
        }
    }
    return false;
}

//---------------------------------------------------------
//   ccToUse
//---------------------------------------------------------

int SynthesizerState::ccToUse() const
{
    SynthesizerGroup g = group("master");

    int method = 1;
    int cc = -1;

    for (IdValue idVal : g) {
        if (idVal.id == 4) {
            method = idVal.data.toInt();
        } else if (idVal.id == 5) {
            switch (idVal.data.toInt()) {
            case 0:
                cc = 1;
                break;
            case 1:
                cc = 2;
                break;
            case 2:
                cc = 4;
                break;
            case 3:
                cc = 11;
                break;
            default:
                qWarning("Unrecognised CCToUse index from synthesizer: %d", idVal.data.toInt());
            }
        }
    }

    if (method == 0) {        // velocity only
        return -1;
    }

    return cc;
}

//---------------------------------------------------------
//   method
//---------------------------------------------------------

int SynthesizerState::method() const
{
    SynthesizerGroup g = group("master");

    int method = -1;

    for (IdValue idVal : g) {
        if (idVal.id == 4) {
            method = idVal.data.toInt();
            break;
        }
    }

    return method;
}
}