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#ifndef EFFECT_H
#define EFFECT_H
#include <QSharedPointer>
#include <QDomDocument>
#include "engine/channelhandle.h"
#include "engine/engine.h"
#include "effects/effectmanifest.h"
#include "effects/effectparameter.h"
#include "effects/effectinstantiator.h"
#include "util/class.h"
class EffectState;
class EffectProcessor;
class EngineEffectChain;
class EngineEffect;
class EffectsManager;
// The Effect class is the main-thread representation of an instantiation of an
// effect. This class is NOT thread safe and must only be used by the main
// thread. The getEngineEffect() method can be used to get a pointer to the
// Engine-thread representation of the effect.
class Effect : public QObject {
Q_OBJECT
public:
typedef bool (*ParameterFilterFnc)(EffectParameter*);
Effect(EffectsManager* pEffectsManager,
EffectManifestPointer pManifest,
EffectInstantiatorPointer pInstantiator);
virtual ~Effect();
EffectState* createState(const mixxx::EngineParameters& bufferParameters);
EffectManifestPointer getManifest() const;
unsigned int numKnobParameters() const;
unsigned int numButtonParameters() const;
static bool isButtonParameter(EffectParameter* parameter);
static bool isKnobParameter(EffectParameter* parameter);
EffectParameter* getFilteredParameterForSlot(
ParameterFilterFnc filterFnc, unsigned int slotNumber);
EffectParameter* getKnobParameterForSlot(unsigned int slotNumber);
EffectParameter* getButtonParameterForSlot(unsigned int slotNumber);
EffectParameter* getParameterById(const QString& id) const;
EffectParameter* getButtonParameterById(const QString& id) const;
void setEnabled(bool enabled);
bool enabled() const;
EngineEffect* getEngineEffect();
void addToEngine(EngineEffectChain* pChain, int iIndex,
const QSet<ChannelHandleAndGroup>& activeInputChannels);
void removeFromEngine(EngineEffectChain* pChain, int iIndex);
void updateEngineState();
static EffectPointer createFromXml(EffectsManager* pEffectsManager,
const QDomElement& element);
double getMetaknobDefault();
signals:
void enabledChanged(bool enabled);
private:
QString debugString() const {
return QString("Effect(%1)").arg(m_pManifest->name());
}
void sendParameterUpdate();
EffectsManager* m_pEffectsManager;
EffectManifestPointer m_pManifest;
EffectInstantiatorPointer m_pInstantiator;
EngineEffect* m_pEngineEffect;
bool m_bAddedToEngine;
bool m_bEnabled;
QList<EffectParameter*> m_parameters;
QMap<QString, EffectParameter*> m_parametersById;
DISALLOW_COPY_AND_ASSIGN(Effect);
};
#endif /* EFFECT_H */
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