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Diffstat (limited to 'noatun/library/noatun/equalizer.h')
| -rw-r--r-- | noatun/library/noatun/equalizer.h | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/noatun/library/noatun/equalizer.h b/noatun/library/noatun/equalizer.h new file mode 100644 index 00000000..10de88c5 --- /dev/null +++ b/noatun/library/noatun/equalizer.h @@ -0,0 +1,238 @@ +#ifndef NOATUN_EQUALIZER_H +#define NOATUN_EQUALIZER_H + +#include <qptrlist.h> +#include <qobject.h> +#include <kurl.h> +#include <noatun/vequalizer.h> + +class Engine; +class Equalizer; + +/** + * a preset stores the state of the equalizer + * + * @short EQ Preset + * @author Charles Samuels + * @version 2.3 + **/ +class Preset +{ +friend class Equalizer; + + Preset(const QString &file); + Preset(); + Preset(VPreset p); + +public: + QString name() const; + bool setName(const QString &name); + bool save() const; + bool load(); + + void remove(); + + QString file() const; + + VPreset &vpreset() const; +private: + QString mFile; +}; + +/** + * This represents a single band in Noatuns %Equalizer + * + * @short EQ Band + * @author Charles Samuels + * @version 2.3 + **/ +class Band +{ +friend class Equalizer; +friend class QPtrList<Band>; + +private: + Band(); + Band(int start, int end); + Band(int band); + virtual ~Band(); +public: + /** + * the intensity of the change. + * it's logarithmic. 0 is no change + * negative numbers are loss in intensity + * positive numbers are a gain + * And +-100 is the most you'd need to go + **/ + int level(); + void setLevel(int l); + + int start() const; + int end() const; + + /** + * the middle between start and end + **/ + int center() const; + + QString formatStart(bool withHz=true) const; + QString formatEnd(bool withHz=true) const; + /** + * return the format for center() + **/ + QString format(bool withHz=true) const; + +private: + int mOffset; + int mNum, mEnd; +}; + + +/** + * @deprecated + * + * this API is deprecated!!! Do not use it! + * it acts as a wrapper around the new VEqualizer API + * This only exists to keep compatibility in both + * source and binary forms. It will go away in the future. + * @short old Equalizer + * @author Charles Samuels + * @version 2.3 + **/ +class Equalizer : public QObject +{ +friend class Band; +friend class Preset; +friend class Engine; + +Q_OBJECT +public: + Equalizer(); + ~Equalizer(); + + const QPtrList<Band> &bands() const; + Band *band(int num) const; + int bandCount() const; + + int preamp() const; + bool isEnabled() const; + + void init(); + +public slots: + /** + * set the preamplification + * it's logarithmic. 0 is no change + * negative numbers are loss in intensity + * positive numbers are a gain + * And +-100 is the most you'd need to go + **/ + void setPreamp(int p); + void enable(); + void disable(); + void setEnabled(bool e); + + +public: +// saving eq stuff + /** + * save the current levels + * all noatun equalizer files have the "*.noatunequalizer" + * pattern. Nevertheless, the file can be identified + * by magic, so it's not required + **/ + bool save(const KURL &file, const QString &friendly) const; + + /** + * restore the EQ settings from this file + **/ + bool load(const KURL &file); + + /** + * convert the current EQ settings to string form, + * suitable for storage, the given string is the title + * + * @see fromString + **/ + QString toString(const QString &name="stored") const; + + /** + * undo a toString, restoring the EQ + * to the settings in the given string, + * emitting the changed signals + **/ + bool fromString(const QString &str); + + /** + * create a preset with such a name + * and remember that it'l return zero + * if the name already exists + * + * If smart is true, append a number to the end + * of the name, if one already exists by the given + **/ + Preset *createPreset(const QString &name, bool smart=true); + + /** + * return all the presets + * remember to setAutoDelete on this + **/ + QPtrList<Preset> presets() const; + + Preset *preset(const QString &file); + bool presetExists(const QString &name) const; + +signals: + void changed(Band *band); + void changed(); + void enabled(); + void disabled(); + void enabled(bool e); + + void preampChanged(int p); + void preampChanged(); + + /** + * the preset with the given name + * was selected + **/ + void changed(Preset *); + + /** + * when a new preset has been created + **/ + void created(Preset*); + + /** + * when @p preset has been renamed to @p newname + **/ + void renamed(Preset *); + + /** + * the given preset has been removed + **/ + void removed(Preset *); + +private slots: + void created(VPreset preset); + void selected(VPreset preset); + void renamed(VPreset preset); + void removed(VPreset preset); + +private: + void add(Band*); + void remove(Band*); + // apply the data to artsd + void enableUpdates(bool on=true); + void update(bool full=false); + +private: + QPtrList<Band> mBands; + bool mUpdates; + int mPreamp; +}; + + + +#endif + |