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channelscanner.h

// -*- c++ -*-

/*
 *
 * Copyright (C) 2002 Richard Moore <rich@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef CHANNELSCANNER_H
#define CHANNELSCANNER_H

#include <qdom.h>
#include <qobject.h>

class Channel;
class ChannelStore;
class ChannelScannerRegion;
class QVSourcePlugin;

class ChannelScanner : public QObject
{
    Q_OBJECT

public:
    ChannelScanner( QObject *parent=0, const char *name=0 );
    virtual ~ChannelScanner();

    void setDevice( QVSourcePlugin *device );
    QVSourcePlugin *device() const { return dev; }

    void setStore( ChannelStore *store );
    ChannelStore *store() const { return chanStore; }

    bool loadRegionFile( const QString &filename );

    Channel *channel() const { return chan; }

public slots:
    void scan();

signals:
    void started();

    void progress( int );

    void done();

    void done( bool success );

    void foundChannel();

protected:
    bool first();

    bool next();

    bool last();

    bool scanCurrent();

    bool regionFirst();

    bool regionNext();

protected slots:
    void addChannel();

    void scanChunk();

private:
    QVSourcePlugin *dev;
    unsigned long freq;
    unsigned long min;
    unsigned long max;
    unsigned long start;
    int adj;

    int percentDone;
    unsigned long lastProgress;
    unsigned long onePercent;
    unsigned long oneChunk;

    ChannelStore *chanStore;
    Channel *chan;
    ChannelScannerRegion *region;
};

#endif // CHANNELSCANNER_H

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