engines/sfz/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 - 2012 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_SFZ_VOICE_H__
#define __LS_SFZ_VOICE_H__

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

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

namespace LinuxSampler { namespace sfz {
    class Engine;
    class EngineChannel;

    /** SoundFont Voice
     *
     * Renders a voice for the SoundFont format.
     */
    class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> {
        public:
            Voice();
            virtual ~Voice();
            void SetOutput(AudioOutputDevice* pAudioOutputDevice);
            void SetEngine(LinuxSampler::Engine* pEngine);
            void CalculateFadeOutCoeff(float FadeOutTime, float SampleRate);
            
            virtual void VoiceFreed() { SignalRack.Reset(); }

        protected:
            virtual SampleInfo       GetSampleInfo();
            virtual RegionInfo       GetRegionInfo();
            virtual InstrumentInfo   GetInstrumentInfo();
            virtual double           CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity);
            virtual AbstractEngine*  GetEngine() { return (AbstractEngine*)pEngine; }
            virtual float            GetReleaseTriggerAttenuation(float noteLength);
            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() { return 0; }
            virtual uint8_t          GetVCFResonanceCtrl() { return 0; }
            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();
            virtual void             ProcessGroupEvent(RTList<Event>::Iterator& itEvent);
            virtual void             SetSampleStartOffset();
            virtual int              GetRAMCacheOffset() { return pRegion->pSample->RAMCacheOffset; }
            virtual int              CalculatePan(uint8_t pan);

        private:
            SfzSignalUnitRack SignalRack;

        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* GetSfzEngineChannel();
            
            friend class CCUnit;
            friend class XFInCCUnit;
            friend class XFOutCCUnit;
            friend class AmpEGUnit;
            friend class FilEGUnit;
            friend class PitchEGUnit;
            friend class PitchLFOUnit;
            friend class AmpLFOUnit;
            friend class FilLFOUnit;
            friend class EndpointUnit;
            friend class SfzSignalUnitRack;

        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::sfz

#endif // __LS_SFZ_VOICE_H__
1	/***************************************************************************
2	* *
3	* LinuxSampler - modular, streaming capable sampler *
4	* *
5	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	* Copyright (C) 2005 - 2008 Christian Schoenebeck *
7	* Copyright (C) 2009 - 2012 Christian Schoenebeck and Grigor Iliev *
8	* *
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_SFZ_VOICE_H__
26	#define __LS_SFZ_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 "DiskThread.h"
34	#include "../gig/Filter.h"
35	#include "../common/VoiceBase.h"
36	#include "../gig/SynthesisParam.h"
37	#include "EG.h"
38	#include "EGADSR.h"
39	#include "SfzSignalUnitRack.h"
40
41	namespace LinuxSampler { namespace sfz {
42	class Engine;
43	class EngineChannel;
44
45	/** SoundFont Voice
46	*
47	* Renders a voice for the SoundFont format.
48	*/
49	class Voice : public LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> {
50	public:
51	Voice();
52	virtual ~Voice();
53	void SetOutput(AudioOutputDevice* pAudioOutputDevice);
54	void SetEngine(LinuxSampler::Engine* pEngine);
55	void CalculateFadeOutCoeff(float FadeOutTime, float SampleRate);
56
57	virtual void VoiceFreed() { SignalRack.Reset(); }
58
59	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 float GetReleaseTriggerAttenuation(float noteLength);
66	virtual double GetEG1ControllerValue(uint8_t MIDIKeyVelocity);
67	virtual EGInfo CalculateEG1ControllerInfluence(double eg1ControllerValue);
68	virtual void TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) { }
69	virtual double GetEG2ControllerValue(uint8_t MIDIKeyVelocity);
70	virtual EGInfo CalculateEG2ControllerInfluence(double eg2ControllerValue);
71	virtual void TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) { }
72	virtual void InitLFO1() { }
73	virtual void InitLFO2() { }
74	virtual void InitLFO3() { }
75	virtual float CalculateCutoffBase(uint8_t MIDIKeyVelocity);
76	virtual float CalculateFinalCutoff(float cutoffBase);
77	virtual uint8_t GetVCFCutoffCtrl() { return 0; }
78	virtual uint8_t GetVCFResonanceCtrl() { return 0; }
79	virtual void ProcessCCEvent(RTList<Event>::Iterator& itEvent);
80	virtual void ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) { }
81	virtual double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
82	virtual double GetVelocityRelease(uint8_t MIDIKeyVelocity);
83	virtual double GetSampleAttenuation();
84	virtual void ProcessGroupEvent(RTList<Event>::Iterator& itEvent);
85	virtual void SetSampleStartOffset();
86	virtual int GetRAMCacheOffset() { return pRegion->pSample->RAMCacheOffset; }
87	virtual int CalculatePan(uint8_t pan);
88
89	private:
90	SfzSignalUnitRack SignalRack;
91
92	public: // FIXME: just made public for debugging (sanity check in Engine::RenderAudio()), should be changed to private before the final release
93	// Attributes
94	Engine* pEngine; ///< Pointer to the sampler engine, to be able to access the event lists.
95	//uint LoopCyclesLeft; ///< In case there is a RAMLoop and it's not an endless loop; reflects number of loop cycles left to be passed
96
97	// Static Methods
98	static float CalculateFilterCutoffCoeff();
99
100	// Methods
101	void ProcessEvents(uint Samples);
102	void processCrossFadeEvent(RTList<Event>::Iterator& itEvent);
103
104	EngineChannel* GetSfzEngineChannel();
105
106	friend class CCUnit;
107	friend class XFInCCUnit;
108	friend class XFOutCCUnit;
109	friend class AmpEGUnit;
110	friend class FilEGUnit;
111	friend class PitchEGUnit;
112	friend class PitchLFOUnit;
113	friend class AmpLFOUnit;
114	friend class FilLFOUnit;
115	friend class EndpointUnit;
116	friend class SfzSignalUnitRack;
117
118	protected:
119	virtual uint8_t CrossfadeAttenuation(uint8_t& CrossfadeControllerValue) {
120	/*uint8_t c = std::max(CrossfadeControllerValue, pRegion->AttenuationControllerThreshold);
121	c = (!pRegion->Crossfade.out_end) ? c // 0,0,0,0 means no crossfade defined
122	: (c < pRegion->Crossfade.in_end) ?
123	((c <= pRegion->Crossfade.in_start) ? 0
124	: 127 * (c - pRegion->Crossfade.in_start) / (pRegion->Crossfade.in_end - pRegion->Crossfade.in_start))
125	: (c <= pRegion->Crossfade.out_start) ? 127
126	: (c < pRegion->Crossfade.out_end) ? 127 * (pRegion->Crossfade.out_end - c) / (pRegion->Crossfade.out_end - pRegion->Crossfade.out_start)
127	: 0;
128	return pRegion->InvertAttenuationController ? 127 - c : c;*/ // TODO: ^^^
129	return 0;
130	}
131	};
132
133	}} // namespace LinuxSampler::sfz
134
135	#endif // __LS_SFZ_VOICE_H__