initial commit, 4.5 stable

servers/audio/effects/audio_effect_stereo_enhance.h

@@ -0,0 +1,82 @@
+/**************************************************************************/
+/*  audio_effect_stereo_enhance.h                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "servers/audio/audio_effect.h"
+
+class AudioEffectStereoEnhance;
+
+class AudioEffectStereoEnhanceInstance : public AudioEffectInstance {
+	GDCLASS(AudioEffectStereoEnhanceInstance, AudioEffectInstance);
+	friend class AudioEffectStereoEnhance;
+	Ref<AudioEffectStereoEnhance> base;
+
+	enum {
+		MAX_DELAY_MS = 50
+	};
+
+	float *delay_ringbuff = nullptr;
+	unsigned int ringbuff_pos = 0;
+	unsigned int ringbuff_mask = 0;
+
+public:
+	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
+
+	~AudioEffectStereoEnhanceInstance();
+};
+
+class AudioEffectStereoEnhance : public AudioEffect {
+	GDCLASS(AudioEffectStereoEnhance, AudioEffect);
+
+	friend class AudioEffectStereoEnhanceInstance;
+	float volume_db = 0.0f;
+
+	float pan_pullout = 1.0f;
+	float time_pullout = 0.0f;
+	float surround = 0.0f;
+
+protected:
+	static void _bind_methods();
+
+public:
+	Ref<AudioEffectInstance> instantiate() override;
+
+	void set_pan_pullout(float p_amount);
+	float get_pan_pullout() const;
+
+	void set_time_pullout(float p_amount);
+	float get_time_pullout() const;
+
+	void set_surround(float p_amount);
+	float get_surround() const;
+
+	AudioEffectStereoEnhance();
+};