/*
 *  mdaTalkBoxProcessor.h
 *  mda-vst3
 *
 *  Created by Arne Scheffler on 6/14/08.
 *
 *  mda VST Plug-ins
 *
 *  Copyright (c) 2008 Paul Kellett
 *
 *  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 "mdaBaseProcessor.h"

namespace Steinberg {
namespace Vst {
namespace mda {

//-----------------------------------------------------------------------------
class TalkBoxProcessor : public BaseProcessor
{
public:
	TalkBoxProcessor ();
	~TalkBoxProcessor () override;
	
	int32 getVst2UniqueId () const SMTG_OVERRIDE { return 'mda&'; }

	tresult PLUGIN_API initialize (FUnknown* context) SMTG_OVERRIDE;
	tresult PLUGIN_API terminate () SMTG_OVERRIDE;
	tresult PLUGIN_API setActive (TBool state) SMTG_OVERRIDE;
	tresult PLUGIN_API setProcessing (TBool state) SMTG_OVERRIDE;

	void doProcessing (ProcessData& data) SMTG_OVERRIDE;

//-----------------------------------------------------------------------------
	static FUnknown* createInstance (void*) { return (IAudioProcessor*)new TalkBoxProcessor; }
#ifdef SMTG_MDA_VST2_COMPATIBILITY
	inline static DECLARE_UID (uid, 0x5653546D, 0x6461266D, 0x64612074, 0x616C6B62);
#else
	inline static DECLARE_UID (uid, 0xF235EEE4, 0x92084883, 0xAD5C8632, 0x34DFE073);
#endif

//-----------------------------------------------------------------------------
protected:
	void recalculate () SMTG_OVERRIDE;
	void lpc (float *buf, float *car, int32 n, int32 o);
	void lpc_durbin (float *r, int32 p, float *k, float *g);

	float *car0, *car1;
	float *window;
	float *buf0, *buf1;

	float emphasis;
	int32 K, N, O, pos, swap;
	float wet, dry, FX;

	float d0, d1, d2, d3, d4;
	float u0, u1, u2, u3, u4;
};

}}} // namespaces
