engines/sf2/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_SF2_VOICE_H__
#define __LS_SF2_VOICE_H__

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

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

namespace LinuxSampler { namespace sf2 {
    class Engine;
    class EngineChannel;

    /** SoundFont Voice
     *
     * Renders a voice for the SoundFont format.
     */
    class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::sf2::Region, ::sf2::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:
            ::LinuxSampler::gig::EGADSR EG1; // TODO: add a fine-tuned version for SF2, or maybe use sfz v1 instead of gig

        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* GetSf2EngineChannel();

        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;*/ // TODO: ^^^
                return 0;
            }
    };

}} // namespace LinuxSampler::sf2

#endif // __LS_SF2_VOICE_H__
1	iliev	2012	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* 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	iliev	2012	* *
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_SF2_VOICE_H__
26			#define __LS_SF2_VOICE_H__
27
28			#include "../../common/global_private.h"
29
30			#include "../../common/RTMath.h"
31			#include "../../common/Pool.h"
32			#include "../../drivers/audio/AudioOutputDevice.h"
33			#include "Stream.h"
34			#include "DiskThread.h"
35	persson	2055	#include "../gig/EGADSR.h"
36	iliev	2012	#include "../gig/Filter.h"
37			#include "../common/VoiceBase.h"
38			#include "../gig/SynthesisParam.h"
39
40			namespace LinuxSampler { namespace sf2 {
41			class Engine;
42			class EngineChannel;
43
44	iliev	2015	/** SoundFont Voice
45	iliev	2012	*
46	iliev	2015	* Renders a voice for the SoundFont format.
47	iliev	2012	*/
48	iliev	2015	class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::sf2::Region, ::sf2::Sample, DiskThread> {
49	iliev	2012	public:
50			Voice();
51			virtual ~Voice();
52			void SetOutput(AudioOutputDevice* pAudioOutputDevice);
53			void SetEngine(LinuxSampler::Engine* pEngine);
54
55	iliev	2015	protected:
56			virtual SampleInfo GetSampleInfo();
57			virtual RegionInfo GetRegionInfo();
58			virtual InstrumentInfo GetInstrumentInfo();
59			virtual double CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
60			virtual AbstractEngine* GetEngine() { return (AbstractEngine*)pEngine; }
61			virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
62			virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
63	persson	2055	virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity);
64	iliev	2015	virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
65			virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
66			virtual void InitLFO1();
67			virtual void InitLFO2();
68			virtual void InitLFO3();
69			virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
70			virtual float CalculateFinalCutoff(float cutoffBase);
71			virtual uint8_t GetVCFCutoffCtrl();
72			virtual uint8_t GetVCFResonanceCtrl();
73			virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent);
74			virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent);
75			virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
76			virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
77			virtual double GetSampleAttenuation();
78
79			private:
80	persson	2055	::LinuxSampler::gig::EGADSR EG1; // TODO: add a fine-tuned version for SF2, or maybe use sfz v1 instead of gig
81
82	iliev	2015	public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
83	iliev	2012	// Attributes
84			Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
85			//uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
86
87			// Static Methods
88			static float CalculateFilterCutoffCoeff();
89
90			// Methods
91			void ProcessEvents(uint Samples);
92			void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
93
94	iliev	2015	EngineChannel* GetSf2EngineChannel();
95
96			protected:
97			virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
98			/*uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
99			c = (!pRegion->Crossfade.out_end) ? c // 0,0,0,0 means no crossfade defined
100			: (c < pRegion->Crossfade.in_end) ?
101			((c <= pRegion->Crossfade.in_start) ? 0
102			: 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
103			: (c <= pRegion->Crossfade.out_start) ? 127
104			: (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
105			: 0;
106			return pRegion->InvertAttenuationController ? 127 - c : c;*/ // TODO: ^^^
107			return 0;
108	iliev	2012	}
109			};
110
111			}} // namespace LinuxSampler::sf2
112
113			#endif // __LS_SF2_VOICE_H__