seekhelper.h

Go to the documentation of this file.
00001 /***************************************************************************
00002                           seekhelper.h  -  description
00003                              -------------------
00004     begin                : Sam Mai 10 2003
00005     copyright            : (C) 2003 by Martin Witte
00006     email                : emw-kradio@nocabal.de
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  *                                                                         *
00011  *   This program is free software; you can redistribute it and/or modify  *
00012  *   it under the terms of the GNU General Public License as published by  *
00013  *   the Free Software Foundation; either version 2 of the License, or     *
00014  *   (at your option) any later version.                                   *
00015  *                                                                         *
00016  ***************************************************************************/
00017 
00018 #ifndef KRADIO_SEEKHELPER_H
00019 #define KRADIO_SEEKHELPER_H
00020 
00021 #ifdef HAVE_CONFIG_H
00022 #include <config.h>
00023 #endif
00024 
00025 #include "radiodevice_interfaces.h"
00026 #include "seekradio_interfaces.h"
00027 #include "soundstreamclient_interfaces.h"
00028 #include <kdemacros.h>
00029 
00030 
00031 class KDE_EXPORT SeekHelper : public IRadioDeviceClient,
00032                               public ISoundStreamClient
00033 {
00034 public:
00035     typedef enum { off, searchWorse, searchBest } state_t;
00036     typedef enum { up, down } direction_t;
00037 
00038     SeekHelper(ISeekRadio &parent);
00039     virtual ~SeekHelper();
00040 
00041     virtual bool     connectI   (Interface *i);
00042     virtual bool     disconnectI(Interface *i);
00043 
00044     virtual void start(const SoundStreamID &id, direction_t dir);
00045     virtual void step();
00046     virtual void stop();
00047 
00048     bool isRunning()     const { return m_state != off; }
00049     bool isRunningUp()   const { return m_state != off && m_direction == up; }
00050     bool isRunningDown() const { return m_state != off && m_direction == down; }
00051 
00052 
00053 // IRadioDeviceClient
00054 RECEIVERS:
00055     bool noticePowerChanged         (bool  /*on*/,         const IRadioDevice */*sender*/) { return false; }
00056     bool noticeStationChanged       (const RadioStation &, const IRadioDevice */*sender*/) { return false; }
00057     bool noticeDescriptionChanged   (const QString &,      const IRadioDevice */*sender*/) { return false; }
00058 
00059     bool noticeRDSStateChanged      (bool  /*enabled*/,    const IRadioDevice */*sender*/) { return false; }
00060     bool noticeRDSRadioTextChanged  (const QString &/*s*/, const IRadioDevice */*sender*/) { return false; }
00061     bool noticeRDSStationNameChanged(const QString &/*s*/, const IRadioDevice */*sender*/) { return false; }
00062 
00063     bool noticeCurrentSoundStreamSourceIDChanged(SoundStreamID /*id*/, const IRadioDevice */*sender*/) { return false; }
00064     bool noticeCurrentSoundStreamSinkIDChanged  (SoundStreamID /*id*/, const IRadioDevice */*sender*/) { return false; }
00065 
00066 protected:
00067 
00068     virtual void finish();
00069 
00070     virtual void abort() = 0;
00071     virtual bool isGood() const = 0;
00072     virtual bool isBetter() const = 0;
00073     virtual bool isWorse() const = 0;
00074     virtual bool bestFound() const = 0;
00075     virtual void getData() = 0;
00076     virtual void rememberBest() = 0;
00077     virtual bool nextSeekStep() = 0;
00078     virtual void applyBest() = 0;
00079 
00080 protected:
00081     state_t        m_state;
00082     direction_t    m_direction;
00083     bool           m_oldMute;
00084 
00085     ISeekRadio    &m_parent;
00086     SoundStreamID  m_SoundStreamID;
00087 };
00088 
00089 #endif
00090 

Generated on Tue Jun 2 19:19:57 2009 for kradio4 by  doxygen 1.5.8