1 files changed, 81 insertions, 0 deletions
diff --git a/servers/audio/effects/audio_effect_phaser.h b/servers/audio/effects/audio_effect_phaser.h
new file mode 100644
index 0000000000..53a8ab8bd8
--- /dev/null
+++ b/servers/audio/effects/audio_effect_phaser.h
@@ -0,0 +1,81 @@
+#ifndef AUDIO_EFFECT_PHASER_H
+#define AUDIO_EFFECT_PHASER_H
+
+
+
+#include "servers/audio/audio_effect.h"
+
+class AudioEffectPhaser;
+
+class AudioEffectPhaserInstance : public AudioEffectInstance {
+	GDCLASS(AudioEffectPhaserInstance,AudioEffectInstance)
+friend class AudioEffectPhaser;
+	Ref<AudioEffectPhaser> base;
+
+	float phase;
+	AudioFrame h;
+
+	class AllpassDelay{
+		float a, h;
+	public:
+
+		_ALWAYS_INLINE_ void delay( float d ) {
+			a = (1.f - d) / (1.f + d);
+		}
+
+		_ALWAYS_INLINE_ float update( float s ){
+			float y = s * -a + h;
+			h = y * a + s;
+			return y;
+		}
+
+		AllpassDelay() { a =0; h = 0;}
+
+	};
+
+	AllpassDelay allpass[2][6];
+public:
+
+	virtual void process(const AudioFrame *p_src_frames,AudioFrame *p_dst_frames,int p_frame_count);
+
+};
+
+
+class AudioEffectPhaser : public AudioEffect {
+	GDCLASS(AudioEffectPhaser,AudioEffect)
+
+friend class AudioEffectPhaserInstance;
+	float range_min;
+	float range_max;
+	float rate;
+	float feedback;
+	float depth;
+
+protected:
+
+	static void _bind_methods();
+public:
+
+
+	Ref<AudioEffectInstance> instance();
+
+	void set_range_min_hz(float p_hz);
+	float get_range_min_hz() const;
+
+	void set_range_max_hz(float p_hz);
+	float get_range_max_hz() const;
+
+	void set_rate_hz(float p_hz);
+	float get_rate_hz() const;
+
+	void set_feedback(float p_fbk);
+	float get_feedback() const;
+
+	void set_depth(float p_depth);
+	float get_depth() const;
+
+	AudioEffectPhaser();
+};
+
+
+#endif // AUDIO_EFFECT_PHASER_H