kradio4 r778
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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