rosegarden/src/base/AudioPluginInstance.cpp

/*
    Rosegarden
    A sequencer and musical notation editor.

    This program is Copyright 2000-2008
        Guillaume Laurent   <glaurent@telegraph-road.org>,
        Chris Cannam        <cannam@all-day-breakfast.com>,
        Richard Bown        <bownie@bownie.com>

    The moral right of the authors to claim authorship of this work
    has been asserted.

    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 "AudioPluginInstance.h"
#include "Instrument.h"

#include <iostream>
#include <cstring>
#include <sstream>

namespace Rosegarden
{

// ------------------ PluginPort ---------------------
//

PluginPort::PluginPort(int number,
                       std::string name,
                       PluginPort::PortType type,
                       PluginPort::PortDisplayHint hint,
                       PortData lowerBound,
                       PortData upperBound,
		       PortData defaultValue):
    m_number(number),
    m_name(name),
    m_type(type),
    m_displayHint(hint),
    m_lowerBound(lowerBound),
    m_upperBound(upperBound),
    m_default(defaultValue)
{
}

AudioPluginInstance::AudioPluginInstance(unsigned int position):
    m_mappedId(-1),
    m_identifier(""),
    m_position(position),
    m_assigned(false),
    m_bypass(false),
    m_program("")
{
}

AudioPluginInstance::AudioPluginInstance(std::string identifier,
                                         unsigned int position):
                m_mappedId(-1),
                m_identifier(identifier),
                m_position(position),
                m_assigned(true)
{
}

std::string 
AudioPluginInstance::toXmlString()
{

    std::stringstream plugin;

    if (m_assigned == false)
    {
#if (__GNUC__ < 3)
        plugin << std::ends;
#endif
        return plugin.str();
    }
    
    if (m_position == Instrument::SYNTH_PLUGIN_POSITION) {
	plugin << "            <synth ";
    } else {
	plugin << "            <plugin"
	       << " position=\""
	       << m_position
	       << "\" ";
    }

    plugin << "identifier=\""
	   << encode(m_identifier)
           << "\" bypassed=\"";

    if (m_bypass)
        plugin << "true\" ";
    else
        plugin << "false\" ";

    if (m_program != "") {
	plugin << "program=\"" << encode(m_program) << "\"";
    }

    plugin << ">" << std::endl;

    for (unsigned int i = 0; i < m_ports.size(); i++)
    {
        plugin << "                <port id=\""
               << m_ports[i]->number
               << "\" value=\""
               << m_ports[i]->value
               << "\" changed=\""
               << (m_ports[i]->changedSinceProgramChange ? "true" : "false")
               << "\"/>" << std::endl;
    }

    for (ConfigMap::iterator i = m_config.begin(); i != m_config.end(); ++i) {
	plugin << "                <configure key=\""
	       << encode(i->first) << "\" value=\""
	       << encode(i->second) << "\"/>" << std::endl;
    }

    if (m_position == Instrument::SYNTH_PLUGIN_POSITION) {
	plugin << "            </synth>";
    } else {
	plugin << "            </plugin>";
    }

#if (__GNUC__ < 3)
    plugin << std::endl << std::ends;
#else
    plugin << std::endl;
#endif

    return plugin.str();
}


void
AudioPluginInstance::addPort(int number, PortData value)
{
    m_ports.push_back(new PluginPortInstance(number, value));
}


bool
AudioPluginInstance::removePort(int number)
{
    PortInstanceIterator it = m_ports.begin();

    for (; it != m_ports.end(); ++it)
    {
        if ((*it)->number == number)
        {
            delete (*it);
            m_ports.erase(it);
            return true;
        }
    }

    return false;
}


PluginPortInstance* 
AudioPluginInstance::getPort(int number)
{
    PortInstanceIterator it = m_ports.begin();

    for (; it != m_ports.end(); ++it)
    {
        if ((*it)->number == number)
            return *it;
    }

    return 0;
}

void
AudioPluginInstance::clearPorts()
{
    PortInstanceIterator it = m_ports.begin();
    for (; it != m_ports.end(); ++it)
        delete (*it);
    m_ports.erase(m_ports.begin(), m_ports.end());
}

std::string
AudioPluginInstance::getConfigurationValue(std::string k) const
{
    ConfigMap::const_iterator i = m_config.find(k);
    if (i != m_config.end()) return i->second;
    return "";
}

void
AudioPluginInstance::setProgram(std::string program)
{
    m_program = program;
    
    PortInstanceIterator it = m_ports.begin();
    for (; it != m_ports.end(); ++it) {
	(*it)->changedSinceProgramChange = false;
    }
}
	
void
AudioPluginInstance::setConfigurationValue(std::string k, std::string v)
{
    m_config[k] = v;
}

std::string
AudioPluginInstance::getDistinctiveConfigurationText() const
{
    std::string base = getConfigurationValue("load");

    if (base == "") {
	for (ConfigMap::const_iterator i = m_config.begin();
	     i != m_config.end(); ++i) {

	    if (!strncmp(i->first.c_str(),
			 "__ROSEGARDEN__",
			 strlen("__ROSEGARDEN__"))) continue;

	    if (i->second != "" && i->second[0] == '/') {
		base = i->second;
		break;
	    } else if (base != "") {
		base = i->second;
	    }
	}
    }

    if (base == "") return "";
    
    std::string::size_type s = base.rfind('/');
    if (s < base.length() - 1) base = base.substr(s + 1);

    std::string::size_type d = base.rfind('.');
    if (d < base.length() - 1 && d > 0) base = base.substr(0, d);

    return base;
}
    

}