engines/gig/Voice.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
 *   Copyright (C) 2009 - 2010 Christian Schoenebeck and Grigor Iliev      *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#ifndef __LS_GIG_VOICE_H__
#define __LS_GIG_VOICE_H__

#include "../../common/global_private.h"

#include <gig.h>

#include "../../common/RTMath.h"
#include "../../common/Pool.h"
#include "../../drivers/audio/AudioOutputDevice.h"
#include "Stream.h"
#include "DiskThread.h"
#include "EGADSR.h"
#include "EGDecay.h"
#include "Filter.h"
#include "../common/VoiceBase.h"
#include "SynthesisParam.h"
#include "SmoothVolume.h"

namespace LinuxSampler { namespace gig {
    class Engine;
    class EngineChannel;

    /** Gig Voice
     *
     * Renders a voice for the Gigasampler format.
     */
    class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::gig::DimensionRegion, ::gig::Sample, DiskThread> {
        public:
            Voice();
            virtual ~Voice();
            void SetOutput(AudioOutputDevice* pAudioOutputDevice);
            void SetEngine(LinuxSampler::Engine* pEngine);

        protected:
            virtual SampleInfo       GetSampleInfo();
            virtual RegionInfo       GetRegionInfo();
            virtual InstrumentInfo   GetInstrumentInfo();
            virtual double           CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
            virtual AbstractEngine*  GetEngine() { return (AbstractEngine*)pEngine; }
            virtual double           GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
            virtual EGInfo           CalculateEG1ControllerInfluence(double eg1ControllerValue);
            virtual void             TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
            virtual double           GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
            virtual EGInfo           CalculateEG2ControllerInfluence(double eg2ControllerValue);
            virtual void             InitLFO1();
            virtual void             InitLFO2();
            virtual void             InitLFO3();
            virtual float            CalculateCutoffBase(uint8_t MIDIKeyVelocity);
            virtual float            CalculateFinalCutoff(float cutoffBase);
            virtual uint8_t          GetVCFCutoffCtrl();
            virtual uint8_t          GetVCFResonanceCtrl();
            virtual void             ProcessCCEvent(RTList<Event>::Iterator& itEvent);
            virtual void             ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
            virtual double           GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
            virtual double           GetVelocityRelease(uint8_t MIDIKeyVelocity);
            virtual double           GetSampleAttenuation();

        private:
            EGADSR EG1;

        public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
            // Attributes
            Engine*                     pEngine;            ///< Pointer to the sampler engine, to be able to access the event lists.
            //uint                        LoopCyclesLeft;     ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed

            // Static Methods
            static float CalculateFilterCutoffCoeff();

            // Methods
            void ProcessEvents(uint Samples);
            void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);

            EngineChannel* GetGigEngineChannel();

        protected:
            virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
                uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
                c = (!pRegion->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
                          : (c < pRegion->Crossfade.in_end) ?
                                ((c <= pRegion->Crossfade.in_start) ? 0
                                : 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
                          : (c <= pRegion->Crossfade.out_start) ? 127
                          : (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
                          : 0;
                return pRegion->InvertAttenuationController ? 127 - c : c;
            }

            inline float Constrain(float ValueToCheck, float Min, float Max) {
                if      (ValueToCheck > Max) ValueToCheck = Max;
                else if (ValueToCheck < Min) ValueToCheck = Min;
                return ValueToCheck;
            }
    };

}} // namespace LinuxSampler::gig

#endif // __LS_GIG_VOICE_H__
1	schoenebeck	53	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	56	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	persson	2055	* Copyright (C) 2005 - 2008 Christian Schoenebeck *
7			* Copyright (C) 2009 - 2010 Christian Schoenebeck and Grigor Iliev *
8	schoenebeck	53	* *
9			* This program is free software; you can redistribute it and/or modify *
10			* it under the terms of the GNU General Public License as published by *
11			* the Free Software Foundation; either version 2 of the License, or *
12			* (at your option) any later version. *
13			* *
14			* This program is distributed in the hope that it will be useful, *
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17			* GNU General Public License for more details. *
18			* *
19			* You should have received a copy of the GNU General Public License *
20			* along with this program; if not, write to the Free Software *
21			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22			* MA 02111-1307 USA *
23			***************************************************************************/
24
25			#ifndef __LS_GIG_VOICE_H__
26			#define __LS_GIG_VOICE_H__
27
28	schoenebeck	1424	#include "../../common/global_private.h"
29	schoenebeck	53
30	schoenebeck	505	#include <gig.h>
31
32	schoenebeck	53	#include "../../common/RTMath.h"
33	schoenebeck	273	#include "../../common/Pool.h"
34	schoenebeck	203	#include "../../drivers/audio/AudioOutputDevice.h"
35	schoenebeck	53	#include "Stream.h"
36			#include "DiskThread.h"
37	schoenebeck	738	#include "EGADSR.h"
38	schoenebeck	53	#include "EGDecay.h"
39			#include "Filter.h"
40	iliev	2012	#include "../common/VoiceBase.h"
41	schoenebeck	770	#include "SynthesisParam.h"
42	persson	832	#include "SmoothVolume.h"
43	schoenebeck	53
44			namespace LinuxSampler { namespace gig {
45			class Engine;
46	iliev	2012	class EngineChannel;
47	schoenebeck	53
48			/** Gig Voice
49			*
50			* Renders a voice for the Gigasampler format.
51			*/
52	iliev	2015	class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::gig::DimensionRegion, ::gig::Sample, DiskThread> {
53	schoenebeck	53	public:
54			Voice();
55	letz	502	virtual ~Voice();
56	schoenebeck	53	void SetOutput(AudioOutputDevice* pAudioOutputDevice);
57	iliev	2012	void SetEngine(LinuxSampler::Engine* pEngine);
58	schoenebeck	829
59	iliev	2015	protected:
60			virtual SampleInfo GetSampleInfo();
61			virtual RegionInfo GetRegionInfo();
62			virtual InstrumentInfo GetInstrumentInfo();
63			virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
64			virtual AbstractEngine* GetEngine() { return (AbstractEngine*)pEngine; }
65			virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
66			virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
67	persson	2055	virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
68	iliev	2015	virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
69			virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
70			virtual void InitLFO1();
71			virtual void InitLFO2();
72			virtual void InitLFO3();
73			virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
74			virtual float CalculateFinalCutoff(float cutoffBase);
75			virtual uint8_t GetVCFCutoffCtrl();
76			virtual uint8_t GetVCFResonanceCtrl();
77			virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent);
78			virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
79			virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
80			virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
81			virtual double GetSampleAttenuation();
82	iliev	2012
83	iliev	2015	private:
84	persson	2055	EGADSR EG1;
85
86	iliev	2015	public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
87	schoenebeck	53	// Attributes
88	schoenebeck	411	Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
89	schoenebeck	770	//uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
90	schoenebeck	738
91	schoenebeck	53	// Static Methods
92			static float CalculateFilterCutoffCoeff();
93
94			// Methods
95	schoenebeck	319	void ProcessEvents(uint Samples);
96	schoenebeck	738	void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
97	schoenebeck	245
98	iliev	2015	EngineChannel* GetGigEngineChannel();
99
100			protected:
101			virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
102			uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
103			c = (!pRegion->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
104			: (c < pRegion->Crossfade.in_end) ?
105			((c <= pRegion->Crossfade.in_start) ? 0
106			: 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
107			: (c <= pRegion->Crossfade.out_start) ? 127
108			: (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
109	persson	832	: 0;
110	iliev	2015	return pRegion->InvertAttenuationController ? 127 - c : c;
111	schoenebeck	236	}
112
113	schoenebeck	53	inline float Constrain(float ValueToCheck, float Min, float Max) {
114			if (ValueToCheck > Max) ValueToCheck = Max;
115			else if (ValueToCheck < Min) ValueToCheck = Min;
116			return ValueToCheck;
117			}
118			};
119
120			}} // namespace LinuxSampler::gig
121
122			#endif // __LS_GIG_VOICE_H__