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 Christian Schoenebeck and Grigor Iliev             *
 *   Copyright (C) 2010 - 2016 Christian Schoenebeck and Andreas Persson   *
 *                                                                         *
 *   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() OVERRIDE;
            virtual RegionInfo       GetRegionInfo() OVERRIDE;
            virtual InstrumentInfo   GetInstrumentInfo() OVERRIDE;
            virtual double           CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual AbstractEngine*  GetEngine() OVERRIDE { return (AbstractEngine*)pEngine; }
            virtual double           GetEG1ControllerValue(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual EGInfo           CalculateEG1ControllerInfluence(double eg1ControllerValue) OVERRIDE;
            virtual void             TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) OVERRIDE;
            virtual double           GetEG2ControllerValue(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual EGInfo           CalculateEG2ControllerInfluence(double eg2ControllerValue) OVERRIDE;
            virtual void             TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) OVERRIDE;
            virtual void             InitLFO1() OVERRIDE;
            virtual void             InitLFO2() OVERRIDE;
            virtual void             InitLFO3() OVERRIDE;
            virtual float            CalculateCutoffBase(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual float            CalculateFinalCutoff(float cutoffBase) OVERRIDE;
            virtual uint8_t          GetVCFCutoffCtrl() OVERRIDE;
            virtual uint8_t          GetVCFResonanceCtrl() OVERRIDE;
            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) OVERRIDE;
            virtual double           GetVelocityAttenuation(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual double           GetVelocityRelease(uint8_t MIDIKeyVelocity) OVERRIDE;
            virtual double           GetSampleAttenuation() OVERRIDE;
            virtual void             ProcessGroupEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
            virtual int              CalculatePan(uint8_t pan) OVERRIDE;

        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) OVERRIDE {
                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	schoenebeck	3054	* Copyright (C) 2009 Christian Schoenebeck and Grigor Iliev *
8			* Copyright (C) 2010 - 2016 Christian Schoenebeck and Andreas Persson *
9	schoenebeck	53	* *
10			* This program is free software; you can redistribute it and/or modify *
11			* it under the terms of the GNU General Public License as published by *
12			* the Free Software Foundation; either version 2 of the License, or *
13			* (at your option) any later version. *
14			* *
15			* This program is distributed in the hope that it will be useful, *
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
18			* GNU General Public License for more details. *
19			* *
20			* You should have received a copy of the GNU General Public License *
21			* along with this program; if not, write to the Free Software *
22			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
23			* MA 02111-1307 USA *
24			***************************************************************************/
25
26			#ifndef __LS_GIG_VOICE_H__
27			#define __LS_GIG_VOICE_H__
28
29	schoenebeck	1424	#include "../../common/global_private.h"
30	schoenebeck	53
31	schoenebeck	3052	#if AC_APPLE_UNIVERSAL_BUILD
32			# include <libgig/gig.h>
33			#else
34			# include <gig.h>
35			#endif
36	schoenebeck	505
37	schoenebeck	53	#include "../../common/RTMath.h"
38	schoenebeck	273	#include "../../common/Pool.h"
39	schoenebeck	203	#include "../../drivers/audio/AudioOutputDevice.h"
40	schoenebeck	53	#include "Stream.h"
41			#include "DiskThread.h"
42	schoenebeck	738	#include "EGADSR.h"
43	schoenebeck	53	#include "EGDecay.h"
44			#include "Filter.h"
45	iliev	2012	#include "../common/VoiceBase.h"
46	schoenebeck	770	#include "SynthesisParam.h"
47	persson	832	#include "SmoothVolume.h"
48	persson	2390	#include "EngineChannel.h"
49	schoenebeck	53
50			namespace LinuxSampler { namespace gig {
51			class Engine;
52	iliev	2012	class EngineChannel;
53	schoenebeck	53
54			/** Gig Voice
55			*
56			* Renders a voice for the Gigasampler format.
57			*/
58	iliev	2015	class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::gig::DimensionRegion, ::gig::Sample, DiskThread> {
59	schoenebeck	53	public:
60			Voice();
61	letz	502	virtual ~Voice();
62	schoenebeck	53	void SetOutput(AudioOutputDevice* pAudioOutputDevice);
63	iliev	2012	void SetEngine(LinuxSampler::Engine* pEngine);
64	persson	2327	void CalculateFadeOutCoeff(float FadeOutTime, float SampleRate);
65	schoenebeck	829
66	iliev	2015	protected:
67	schoenebeck	3054	virtual SampleInfo GetSampleInfo() OVERRIDE;
68			virtual RegionInfo GetRegionInfo() OVERRIDE;
69			virtual InstrumentInfo GetInstrumentInfo() OVERRIDE;
70			virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) OVERRIDE;
71			virtual AbstractEngine* GetEngine() OVERRIDE { return (AbstractEngine*)pEngine; }
72			virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity) OVERRIDE;
73			virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue) OVERRIDE;
74			virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) OVERRIDE;
75			virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity) OVERRIDE;
76			virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue) OVERRIDE;
77			virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) OVERRIDE;
78			virtual void InitLFO1() OVERRIDE;
79			virtual void InitLFO2() OVERRIDE;
80			virtual void InitLFO3() OVERRIDE;
81			virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity) OVERRIDE;
82			virtual float CalculateFinalCutoff(float cutoffBase) OVERRIDE;
83			virtual uint8_t GetVCFCutoffCtrl() OVERRIDE;
84			virtual uint8_t GetVCFResonanceCtrl() OVERRIDE;
85	schoenebeck	2559	virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
86			virtual void ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
87			virtual void ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
88	schoenebeck	3054	virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
89			virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity) OVERRIDE;
90			virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity) OVERRIDE;
91			virtual double GetSampleAttenuation() OVERRIDE;
92			virtual void ProcessGroupEvent(RTList<Event>::Iterator& itEvent) OVERRIDE;
93			virtual int CalculatePan(uint8_t pan) OVERRIDE;
94	iliev	2012
95	iliev	2015	private:
96	persson	2055	EGADSR EG1;
97	persson	2175	EGADSR EG2;
98	persson	2055
99	iliev	2015	public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
100	schoenebeck	53	// Attributes
101	schoenebeck	411	Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
102	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
103	schoenebeck	738
104	schoenebeck	53	// Static Methods
105			static float CalculateFilterCutoffCoeff();
106
107			// Methods
108	schoenebeck	319	void ProcessEvents(uint Samples);
109	schoenebeck	738	void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
110	schoenebeck	245
111	iliev	2015	EngineChannel* GetGigEngineChannel();
112
113			protected:
114	schoenebeck	3054	virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) OVERRIDE {
115	iliev	2015	uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
116			c = (!pRegion->Crossfade.out_end) ? c /* 0,0,0,0 means no crossfade defined */
117			: (c < pRegion->Crossfade.in_end) ?
118			((c <= pRegion->Crossfade.in_start) ? 0
119			: 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
120			: (c <= pRegion->Crossfade.out_start) ? 127
121			: (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
122	persson	832	: 0;
123	iliev	2015	return pRegion->InvertAttenuationController ? 127 - c : c;
124	schoenebeck	236	}
125
126	schoenebeck	53	inline float Constrain(float ValueToCheck, float Min, float Max) {
127			if (ValueToCheck > Max) ValueToCheck = Max;
128			else if (ValueToCheck < Min) ValueToCheck = Min;
129			return ValueToCheck;
130			}
131			};
132
133			}} // namespace LinuxSampler::gig
134
135			#endif // __LS_GIG_VOICE_H__