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#ifndef FLANGEREFFECT_H
#define FLANGEREFFECT_H
#include <QMap>
#include "effects/effectprocessor.h"
#include "engine/effects/engineeffect.h"
#include "engine/effects/engineeffectparameter.h"
#include "util/class.h"
#include "util/defs.h"
#include "util/sample.h"
#include "util/types.h"
#include "util/rampingvalue.h"
namespace {
constexpr double kMaxDelayMs = 13.0;
constexpr double kMinDelayMs = 0.22;
constexpr double kCenterDelayMs = (kMaxDelayMs - kMinDelayMs) / 2 + kMinDelayMs;
constexpr double kMaxLfoWidthMs = kMaxDelayMs - kMinDelayMs;
// using + 1.0 instead of ceil() for Mac OS
constexpr SINT kBufferLenth = static_cast<SINT>(kMaxDelayMs + 1.0) * 96; // for 96 kHz
constexpr double kMinLfoBeats = 1/4.0;
constexpr double kMaxLfoBeats = 32.0;
} // anonymous namespace
struct FlangerGroupState : public EffectState {
FlangerGroupState(const mixxx::EngineParameters& bufferParameters)
: EffectState(bufferParameters),
delayPos(0),
lfoFrames(0),
previousPeriodFrames(-1),
prev_regen(0),
prev_mix(0),
prev_width(0),
prev_manual(kCenterDelayMs) {
SampleUtil::clear(delayLeft, kBufferLenth);
SampleUtil::clear(delayRight, kBufferLenth);
}
CSAMPLE delayLeft[kBufferLenth];
CSAMPLE delayRight[kBufferLenth];
unsigned int delayPos;
unsigned int lfoFrames;
double previousPeriodFrames;
CSAMPLE_GAIN prev_regen;
CSAMPLE_GAIN prev_mix;
CSAMPLE_GAIN prev_width;
CSAMPLE_GAIN prev_manual;
};
class FlangerEffect : public EffectProcessorImpl<FlangerGroupState> {
public:
FlangerEffect(EngineEffect* pEffect);
virtual ~FlangerEffect();
static QString getId();
static EffectManifestPointer getManifest();
// See effectprocessor.h
void processChannel(const ChannelHandle& handle,
FlangerGroupState* pState,
const CSAMPLE* pInput, CSAMPLE* pOutput,
const mixxx::EngineParameters& bufferParameters,
const EffectEnableState enableState,
const GroupFeatureState& groupFeatures);
private:
QString debugString() const {
return getId();
}
EngineEffectParameter* m_pSpeedParameter;
EngineEffectParameter* m_pWidthParameter;
EngineEffectParameter* m_pManualParameter;
EngineEffectParameter* m_pRegenParameter;
EngineEffectParameter* m_pMixParameter;
EngineEffectParameter* m_pTripletParameter;
DISALLOW_COPY_AND_ASSIGN(FlangerEffect);
};
#endif /* FLANGEREFFECT_H */
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