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 - 2013 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"

#if AC_APPLE_UNIVERSAL_BUILD
# include <libgig/gig.h>
#else
# include <gig.h>
#endif

#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"
#include "EngineChannel.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);
            void CalculateFadeOutCoeff(float FadeOutTime, float SampleRate);

        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             TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
            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) OVERRIDE;
            virtual void             ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
            virtual void             ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
            virtual void             ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
            virtual double           GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
            virtual double           GetVelocityRelease(uint8_t MIDIKeyVelocity);
            virtual double           GetSampleAttenuation();
            virtual void             ProcessGroupEvent(RTList<Event>::Iterator& itEvent);
            virtual int              CalculatePan(uint8_t pan);

        private:
            EGADSR EG1;
            EGADSR EG2;

        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	persson	2390	* Copyright (C) 2009 - 2013 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	3052	#if AC_APPLE_UNIVERSAL_BUILD
31			# include <libgig/gig.h>
32			#else
33			# include <gig.h>
34			#endif
35	schoenebeck	505
36	schoenebeck	53	#include "../../common/RTMath.h"
37	schoenebeck	273	#include "../../common/Pool.h"
38	schoenebeck	203	#include "../../drivers/audio/AudioOutputDevice.h"
39	schoenebeck	53	#include "Stream.h"
40			#include "DiskThread.h"
41	schoenebeck	738	#include "EGADSR.h"
42	schoenebeck	53	#include "EGDecay.h"
43			#include "Filter.h"
44	iliev	2012	#include "../common/VoiceBase.h"
45	schoenebeck	770	#include "SynthesisParam.h"
46	persson	832	#include "SmoothVolume.h"
47	persson	2390	#include "EngineChannel.h"
48	schoenebeck	53
49			namespace LinuxSampler { namespace gig {
50			class Engine;
51	iliev	2012	class EngineChannel;
52	schoenebeck	53
53			/** Gig Voice
54			*
55			* Renders a voice for the Gigasampler format.
56			*/
57	iliev	2015	class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::gig::DimensionRegion, ::gig::Sample, DiskThread> {
58	schoenebeck	53	public:
59			Voice();
60	letz	502	virtual ~Voice();
61	schoenebeck	53	void SetOutput(AudioOutputDevice* pAudioOutputDevice);
62	iliev	2012	void SetEngine(LinuxSampler::Engine* pEngine);
63	persson	2327	void CalculateFadeOutCoeff(float FadeOutTime, float SampleRate);
64	schoenebeck	829
65	iliev	2015	protected:
66			virtual SampleInfo GetSampleInfo();
67			virtual RegionInfo GetRegionInfo();
68			virtual InstrumentInfo GetInstrumentInfo();
69			virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
70			virtual AbstractEngine* GetEngine() { return (AbstractEngine*)pEngine; }
71			virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
72			virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
73	persson	2055	virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
74	iliev	2015	virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
75			virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
76	persson	2175	virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
77	iliev	2015	virtual void InitLFO1();
78			virtual void InitLFO2();
79			virtual void InitLFO3();
80			virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
81			virtual float CalculateFinalCutoff(float cutoffBase);
82			virtual uint8_t GetVCFCutoffCtrl();
83			virtual uint8_t GetVCFResonanceCtrl();
84	schoenebeck	2559	virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
85			virtual void ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
86			virtual void ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
87	iliev	2015	virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
88			virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
89			virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
90			virtual double GetSampleAttenuation();
91	persson	2114	virtual void ProcessGroupEvent(RTList<Event>::Iterator& itEvent);
92	persson	2382	virtual int CalculatePan(uint8_t pan);
93	iliev	2012
94	iliev	2015	private:
95	persson	2055	EGADSR EG1;
96	persson	2175	EGADSR EG2;
97	persson	2055
98	iliev	2015	public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
99	schoenebeck	53	// Attributes
100	schoenebeck	411	Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
101	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
102	schoenebeck	738
103	schoenebeck	53	// Static Methods
104			static float CalculateFilterCutoffCoeff();
105
106			// Methods
107	schoenebeck	319	void ProcessEvents(uint Samples);
108	schoenebeck	738	void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
109	schoenebeck	245
110	iliev	2015	EngineChannel* GetGigEngineChannel();
111
112			protected:
113			virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
114			uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
115			c = (!pRegion->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
116			: (c < pRegion->Crossfade.in_end) ?
117			((c <= pRegion->Crossfade.in_start) ? 0
118			: 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
119			: (c <= pRegion->Crossfade.out_start) ? 127
120			: (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
121	persson	832	: 0;
122	iliev	2015	return pRegion->InvertAttenuationController ? 127 - c : c;
123	schoenebeck	236	}
124
125	schoenebeck	53	inline float Constrain(float ValueToCheck, float Min, float Max) {
126			if (ValueToCheck > Max) ValueToCheck = Max;
127			else if (ValueToCheck < Min) ValueToCheck = Min;
128			return ValueToCheck;
129			}
130			};
131
132			}} // namespace LinuxSampler::gig
133
134			#endif // __LS_GIG_VOICE_H__