annotate base/PlayParameterRepository.cpp @ 1376:d9511f9e04d7 dev/refactor-piper-related

Introduce some POD structs for describing an external server application and the desired libraries to load from it, and disambiguating between empty list request and invalid list request. This allows for overriding PiperVampPluginFactory behaviour for using a PluginScan to populate the list request.

/* -*- 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 "PlayParameterRepository.h"
#include "PlayParameters.h"
#include "Playable.h"

#include <iostream>

PlayParameterRepository *
PlayParameterRepository::m_instance = new PlayParameterRepository;

PlayParameterRepository *
PlayParameterRepository::getInstance()
{
    return m_instance;
}

PlayParameterRepository::~PlayParameterRepository()
{
}

void
PlayParameterRepository::addPlayable(const Playable *playable)
{
//    cerr << "PlayParameterRepository:addPlayable playable = " << playable <<  endl;

    if (!getPlayParameters(playable)) {

	// Give all playables the same type of play parameters for the
	// moment

//        cerr << "PlayParameterRepository:addPlayable: Adding play parameters for " << playable << endl;

        PlayParameters *params = new PlayParameters;
        m_playParameters[playable] = params;

        params->setPlayClipId
            (playable->getDefaultPlayClipId());

        params->setPlayAudible
            (playable->getDefaultPlayAudible());
        
        connect(params, SIGNAL(playParametersChanged()),
                this, SLOT(playParametersChanged()));
        
        connect(params, SIGNAL(playClipIdChanged(QString)),
                this, SLOT(playClipIdChanged(QString)));

//        cerr << "Connected play parameters " << params << " for playable "
//                     << playable << " to this " << this << endl;
    }
}    

void
PlayParameterRepository::removePlayable(const Playable *playable)
{
    if (m_playParameters.find(playable) == m_playParameters.end()) {
        cerr << "WARNING: PlayParameterRepository::removePlayable: unknown playable " << playable << endl;
        return;
    }
    delete m_playParameters[playable];
    m_playParameters.erase(playable);
}

void
PlayParameterRepository::copyParameters(const Playable *from, const Playable *to)
{
    if (!getPlayParameters(from)) {
        cerr << "ERROR: PlayParameterRepository::copyParameters: source playable unknown" << endl;
        return;
    }
    if (!getPlayParameters(to)) {
        cerr << "WARNING: PlayParameterRepository::copyParameters: target playable unknown, adding it now" << endl;
        addPlayable(to);
    }
    getPlayParameters(to)->copyFrom(getPlayParameters(from));
}

PlayParameters *
PlayParameterRepository::getPlayParameters(const Playable *playable) 
{
    if (m_playParameters.find(playable) == m_playParameters.end()) return 0;
    return m_playParameters.find(playable)->second;
}

void
PlayParameterRepository::playParametersChanged()
{
    PlayParameters *params = dynamic_cast<PlayParameters *>(sender());
    emit playParametersChanged(params);
}

void
PlayParameterRepository::playClipIdChanged(QString id)
{
    PlayParameters *params = dynamic_cast<PlayParameters *>(sender());
    for (PlayableParameterMap::iterator i = m_playParameters.begin();
         i != m_playParameters.end(); ++i) {
        if (i->second == params) {
            emit playClipIdChanged(i->first, id);
            return;
        }
    }
}

void
PlayParameterRepository::clear()
{
//    cerr << "PlayParameterRepository: PlayParameterRepository::clear" << endl;
    while (!m_playParameters.empty()) {
	delete m_playParameters.begin()->second;
	m_playParameters.erase(m_playParameters.begin());
    }
}

PlayParameterRepository::EditCommand::EditCommand(PlayParameters *params) :
    m_params(params)
{
    m_from.copyFrom(m_params);
    m_to.copyFrom(m_params);
}

void
PlayParameterRepository::EditCommand::setPlayMuted(bool muted)
{
    m_to.setPlayMuted(muted);
}

void
PlayParameterRepository::EditCommand::setPlayAudible(bool audible)
{
    m_to.setPlayAudible(audible);
}

void
PlayParameterRepository::EditCommand::setPlayPan(float pan)
{
    m_to.setPlayPan(pan);
}

void
PlayParameterRepository::EditCommand::setPlayGain(float gain)
{
    m_to.setPlayGain(gain);
}

void
PlayParameterRepository::EditCommand::setPlayClipId(QString id)
{
    m_to.setPlayClipId(id);
}

void
PlayParameterRepository::EditCommand::execute()
{
    m_params->copyFrom(&m_to);
}

void
PlayParameterRepository::EditCommand::unexecute()
{
    m_params->copyFrom(&m_from);
}
    
QString
PlayParameterRepository::EditCommand::getName() const
{
    QString name;
    QString multiname = tr("Adjust Playback Parameters");

    int changed = 0;

    if (m_to.isPlayAudible() != m_from.isPlayAudible()) {
        name = tr("Change Playback Mute State");
        if (++changed > 1) return multiname;
    }

    if (m_to.getPlayGain() != m_from.getPlayGain()) {
        name = tr("Change Playback Gain");
        if (++changed > 1) return multiname;
    }

    if (m_to.getPlayPan() != m_from.getPlayPan()) {
        name = tr("Change Playback Pan");
        if (++changed > 1) return multiname;
    }

    if (m_to.getPlayClipId() != m_from.getPlayClipId()) {
        name = tr("Change Playback Sample");
        if (++changed > 1) return multiname;
    }

    if (name == "") return multiname;
    return name;
}