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LircClient.cpp

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
    Copyright 2000-2008 the Rosegarden development team.
 
    This file is Copyright 2005
        Toni Arnold         <toni__arnold@bluewin.ch>

    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    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 "LircClient.h"

#ifdef HAVE_LIRC

#include "misc/Debug.h"
#include "base/Exception.h"
#include <qobject.h>
#include <qsocketnotifier.h>
#include <fcntl.h>
#include <cstdlib>

namespace Rosegarden
{

LircClient::LircClient(void)
        : QObject()
{
    int socketFlags;

    // socket setup with nonblock
    m_socket = lirc_init("rosegarden", 1);
    if (m_socket == -1) {
        throw Exception("Failed to connect to LIRC");
    }

    if (lirc_readconfig(NULL, &m_config, NULL) == -1) {
        throw Exception("Failed reading LIRC config file");
    }

    fcntl(m_socket, F_GETOWN, getpid());
    socketFlags = fcntl(m_socket, F_GETFL, 0);
    if (socketFlags != -1) {
        fcntl(socketFlags, F_SETFL, socketFlags | O_NONBLOCK);
    }

    m_socketNotifier = new QSocketNotifier(m_socket, QSocketNotifier::Read, 0);
    connect(m_socketNotifier, SIGNAL(activated(int)), this, SLOT(readButton()) );

    RG_DEBUG << "LircClient::LircClient: connected to socket: " << m_socket << endl;
}

LircClient::~LircClient()
{
    lirc_freeconfig(m_config);
    delete m_socketNotifier;
    lirc_deinit();

    RG_DEBUG << "LircClient::~LircClient: cleaned up" << endl;
}

void LircClient::readButton()
{
    char *code;
    int ret;

    RG_DEBUG << "LircClient::readButton" << endl;

    if (lirc_nextcode(&code) == 0 && code != NULL) {   // no error && a string is available
        // handle any command attached to that button
        while ( (ret = lirc_code2char(m_config, code, &m_command)) == 0 && m_command != NULL ) 
        {
            emit buttonPressed(m_command);
        }
        free(code);
    }
}

}

#include "LircClient.moc"

#endif

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