89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
#ifndef AUDIO_EFFECT_PITCH_SHIFT_H
|
|
#define AUDIO_EFFECT_PITCH_SHIFT_H
|
|
|
|
|
|
#include "servers/audio/audio_effect.h"
|
|
|
|
class SMBPitchShift {
|
|
|
|
enum {
|
|
MAX_FRAME_LENGTH=8192
|
|
};
|
|
|
|
float gInFIFO[MAX_FRAME_LENGTH];
|
|
float gOutFIFO[MAX_FRAME_LENGTH];
|
|
float gFFTworksp[2*MAX_FRAME_LENGTH];
|
|
float gLastPhase[MAX_FRAME_LENGTH/2+1];
|
|
float gSumPhase[MAX_FRAME_LENGTH/2+1];
|
|
float gOutputAccum[2*MAX_FRAME_LENGTH];
|
|
float gAnaFreq[MAX_FRAME_LENGTH];
|
|
float gAnaMagn[MAX_FRAME_LENGTH];
|
|
float gSynFreq[MAX_FRAME_LENGTH];
|
|
float gSynMagn[MAX_FRAME_LENGTH];
|
|
long gRover;
|
|
|
|
void smbFft(float *fftBuffer, long fftFrameSize, long sign);
|
|
public:
|
|
void PitchShift(float pitchShift, long numSampsToProcess, long fftFrameSize, long osamp, float sampleRate, float *indata, float *outdata, int stride);
|
|
|
|
SMBPitchShift() {
|
|
gRover=0;
|
|
memset(gInFIFO, 0, MAX_FRAME_LENGTH*sizeof(float));
|
|
memset(gOutFIFO, 0, MAX_FRAME_LENGTH*sizeof(float));
|
|
memset(gFFTworksp, 0, 2*MAX_FRAME_LENGTH*sizeof(float));
|
|
memset(gLastPhase, 0, (MAX_FRAME_LENGTH/2+1)*sizeof(float));
|
|
memset(gSumPhase, 0, (MAX_FRAME_LENGTH/2+1)*sizeof(float));
|
|
memset(gOutputAccum, 0, 2*MAX_FRAME_LENGTH*sizeof(float));
|
|
memset(gAnaFreq, 0, MAX_FRAME_LENGTH*sizeof(float));
|
|
memset(gAnaMagn, 0, MAX_FRAME_LENGTH*sizeof(float));
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
class AudioEffectPitchShift;
|
|
|
|
class AudioEffectPitchShiftInstance : public AudioEffectInstance {
|
|
GDCLASS(AudioEffectPitchShiftInstance,AudioEffectInstance)
|
|
friend class AudioEffectPitchShift;
|
|
Ref<AudioEffectPitchShift> base;
|
|
|
|
SMBPitchShift shift_l;
|
|
SMBPitchShift shift_r;
|
|
|
|
|
|
public:
|
|
|
|
virtual void process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count);
|
|
|
|
};
|
|
|
|
|
|
class AudioEffectPitchShift : public AudioEffect {
|
|
GDCLASS(AudioEffectPitchShift,AudioEffect)
|
|
|
|
friend class AudioEffectPitchShiftInstance;
|
|
|
|
float pitch_scale;
|
|
int window_size;
|
|
float wet;
|
|
float dry;
|
|
bool filter;
|
|
|
|
protected:
|
|
|
|
static void _bind_methods();
|
|
public:
|
|
|
|
|
|
Ref<AudioEffectInstance> instance();
|
|
|
|
void set_pitch_scale(float p_adjust);
|
|
float get_pitch_scale() const;
|
|
|
|
AudioEffectPitchShift();
|
|
};
|
|
|
|
|
|
#endif // AUDIO_EFFECT_PITCH_SHIFT_H
|