engines/sfz/sfz.h

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2008 Anders Dahnielson <anders@dahnielson.com>          *
 *   Copyright (C) 2009 - 2011 Anders Dahnielson 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 LIBSFZ_SFZ_H
#define LIBSFZ_SFZ_H

#include <fstream>
#include <iostream>
#include <vector>
#include <string>
#include <stdexcept>

#include "../common/SampleFile.h"
#include "../common/SampleManager.h"
#include "../../common/ArrayList.h"

#define TRIGGER_ATTACK  ((unsigned char) (1 << 0)) // 0x01
#define TRIGGER_RELEASE ((unsigned char) (1 << 1)) // 0x02
#define TRIGGER_FIRST   ((unsigned char) (1 << 2)) // 0x04
#define TRIGGER_LEGATO  ((unsigned char) (1 << 3)) // 0x08

namespace sfz
{
    // Forward declarations
    class Articulation;
    class Region;
    class Group;
    class Instrument;
    class File;
    class LookupTable;

    class Sample : public LinuxSampler::SampleFileBase<Region> {
        public:
            Sample(String File, bool DontClose = false, uint offset = 0): LinuxSampler::SampleFileBase<Region>(File, DontClose) {
                Offset = offset;
            }
            virtual ~Sample() { }
    };

    // Enumerations
    enum sw_vel_t    { VEL_CURRENT, VEL_PREVIOUS };
    enum off_mode_t  { OFF_FAST, OFF_NORMAL };
    enum loop_mode_t { NO_LOOP, ONE_SHOT, LOOP_CONTINUOUS, LOOP_SUSTAIN, LOOP_UNSET };
    enum curve_t     { GAIN, POWER };
    enum filter_t    { LPF_1P, HPF_1P, BPF_1P, BRF_1P, APF_1P,
                       LPF_2P, HPF_2P, BPF_2P, BRF_2P, PKF_2P,
                       LPF_4P, HPF_4P,
                       LPF_6P, HPF_6P };

    typedef unsigned char trigger_t;
    typedef unsigned char uint8_t;

    class SampleManager : public LinuxSampler::SampleManager<Sample, Region> {
    public:
        Sample* FindSample(std::string samplePath, int offset);

    protected:
        virtual void OnSampleInUse(Sample* pSample) {
            pSample->Open();
        }

        virtual void OnSampleInNotUse(Sample* pSample) {
            pSample->Close();
        }
    };
    
    class CC {
        public:
            uint8_t Controller;  ///< MIDI controller number.
            float   Influence;   ///< Controller Value.
            
            CC() { CC(0, 0.0f); }
                    
            CC(uint8_t Controller, float Influence) {
                this->Controller = Controller;
                this->Influence = Influence;
            }
                    
            CC(const CC& cc) { Copy(cc); }
            void operator=(const CC& cc) { Copy(cc); }
                    
            void Copy(const CC& cc) {
                Controller = cc.Controller;
                Influence = cc.Influence;
            }
    };

    /////////////////////////////////////////////////////////////
    // class Exception

    class Exception :
        public std::runtime_error
    {
        public:
        Exception(const std::string& msg) :
            runtime_error(msg)
        {
        }

        std::string Message()
        {
            return what();
        }

        void PrintMessage()
        {
            std::cerr << what() << std::endl << std::flush;
        }
    };

    /////////////////////////////////////////////////////////////
    // class optional

    //  Handy class nicked from LinuxSampler...
    //  Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck
    //  Copyright (C) 2005, 2006 Christian Schoenebeck

    class optional_base
    {
        public:
        class nothing_t { public: nothing_t() {} };
        static const nothing_t nothing;
    };

    template<class T>
    class optional :
        public optional_base
    {
        public:
        optional()
        {
            initialized = false;
        }

        optional(T data)
        {
            this->data  = data;
            initialized = true;
        }

        optional(nothing_t)
        {
            initialized = false;
        }

        template <class T_inner>
        optional(T_inner data)
        {
            this->data  = T(data);
            initialized = true;
        }

        const T& get() const throw (Exception)
        {
            if (!initialized) throw Exception("optional variable not initialized");
            return data;
        }

        T& get() throw (Exception)
        {
            if (!initialized) throw Exception("optional variable not initialized");
            return data;
        }

        void unset()
        {
            initialized = false;
        }

        optional& operator =(const optional& arg) throw (Exception)
        {
            if (!arg.initialized) {
                            initialized = false;
                        } else {
                            this->data  = arg.data;
                            initialized = true;
                        }
            return *this;
        }

        optional& operator =(const T& arg)
        {
            this->data  = arg;
            initialized = true;
            return *this;
        }

        const T& operator *() const throw (Exception) { return get(); }
        T&       operator *()       throw (Exception) { return get(); }

        const T* operator ->() const throw (Exception)
        {
            if (!initialized) throw Exception("optional variable not initialized");
            return &data;
        }

        T* operator ->() throw (Exception)
        {
            if (!initialized) throw Exception("optional variable not initialized");
            return &data;
        }

        operator bool()   const { return initialized; }
        bool operator !() const { return !initialized; }

        protected:
        T    data;
        bool initialized;
    };

    /////////////////////////////////////////////////////////////
    // class Articulation

    // Articulation containing all performance parameters for synthesis
    class Articulation
    {
    public:
        Articulation();
        virtual ~Articulation();
    };

    class EGNode
    {
    public:
        float time;
        float level;
        float shape;
        float curve;
        LinuxSampler::ArrayList<CC> time_oncc;
        LinuxSampler::ArrayList<CC> level_oncc;
        
        EGNode();
        EGNode(const EGNode& egNode) { Copy(egNode); }
        void operator=(const EGNode& egNode) { Copy(egNode); }
        void Copy(const EGNode& egNode);
    };

    class EG
    {
    public:
        LinuxSampler::ArrayList<EGNode> node;
        int sustain;
        int loop;
        int loop_count;
        float amplitude;
        float cutoff;
        EG();
        EG(const EG& eg) { Copy(eg); }
        void operator=(const EG& eg) { Copy(eg); }
        void Copy(const EG& eg);
    };

    class LFO
    {
    public:
        float delay; // 0 to 100 seconds
        float freq; // 0 to 20 Hz
        float fade; // 0 to 100 seconds
        float phase; // 0 to 360 degrees
        uint  wave; // 0 to 4294967296
        float volume; // -144 to 6 dB
        int   pitch; // -9600 to 9600 cents
        int   cutoff; // -9600 to 9600 cents
        float resonance; // 0 to 40 dB
        float pan; // -100 to 100 %
        
        LinuxSampler::ArrayList<CC> freq_oncc; // 0 to 20 Hz
        LinuxSampler::ArrayList<CC> fade_oncc; // 0 to 100 seconds
        LinuxSampler::ArrayList<CC> phase_oncc; // 0 to 360 degrees
        LinuxSampler::ArrayList<CC> pitch_oncc;
        
        LFO();
        LFO(const LFO& lfo) { Copy(lfo); }
        void operator=(const LFO& lfo) { Copy(lfo); }
        void Copy(const LFO& lfo);
    };

    // Fixed size array with copy-on-write semantics
    template<class T>
    class Array
    {
    private:
        struct Rep {
            int refcount;
            T a[128];

            Rep() : refcount(1) { }
            static void release(Rep* rep) {
                if (!--rep->refcount) delete rep;
            }
        } *ptr;
    public:
        Array() : ptr(0) { }
        ~Array() { Rep::release(ptr); }

        Array& operator=(const Array& array) {
            if (this != &array) {
                ptr = array.ptr;
                if (ptr) ptr->refcount++;
            }
            return *this;
        }

        const T& operator[](int i) const { return ptr->a[i]; }

        void set(int i, const T& v) {
            if (!ptr) {
                ptr = new Rep;
            } else if (ptr->refcount > 1 && ptr->a[i] != v) {
                Rep* newptr = new Rep(*ptr);
                newptr->refcount = 1;
                Rep::release(ptr);
                ptr = newptr;
            }
            ptr->a[i] = v;
        }
    };

    /////////////////////////////////////////////////////////////
    // class Definition

    // Base definition used by groups and regions
    class Definition
    {
    public:
        Definition();
        virtual ~Definition();

        // sample definition
        std::string sample;

        // input controls
        int   lochan;    int   hichan;
        int   lokey;     int   hikey;
        int   lovel;     int   hivel;
        Array<int> locc; Array<int> hicc;
        int   lobend;    int   hibend;
        float lobpm;     float hibpm;
        int   lochanaft; int   hichanaft;
        int   lopolyaft; int   hipolyaft;
        int   loprog;    int   hiprog;
        float lorand;    float hirand;
        float lotimer;   float hitimer;

        int seq_length;
        int seq_position;

        Array<int> start_locc; Array<int> start_hicc;
        Array<int> stop_locc;  Array<int> stop_hicc;

        int sw_lokey;    int sw_hikey;
        int sw_last;
        int sw_down;
        int sw_up;
        int sw_previous;
        sw_vel_t sw_vel;

        trigger_t trigger;

        uint group;
        uint off_by;
        off_mode_t off_mode;

        Array<int> on_locc; Array<int> on_hicc;

        // sample player
        optional<int> count;
        optional<float> delay; optional<float> delay_random; Array<optional<float> > delay_oncc;
        optional<int> delay_beats; optional<int> stop_beats;
        optional<int> delay_samples; Array<optional<int> > delay_samples_oncc;
        optional<int> end;
        optional<float> loop_crossfade;
        optional<int> offset; optional<int> offset_random; Array<optional<int> > offset_oncc;
        loop_mode_t loop_mode;
        optional<int> loop_start; optional<int> loop_end;
        optional<int> sync_beats;
        optional<int> sync_offset;

        // amplifier
        float volume;
        float pan;
        float width;
        float position;
        float amp_keytrack; int amp_keycenter; float amp_veltrack; Array<float> amp_velcurve; float amp_random;
        float rt_decay;
        Array<float> gain_oncc;
        int xfin_lokey; int xfin_hikey;
        int xfout_lokey; int xfout_hikey;
        curve_t xf_keycurve;
        int xfin_lovel; int xfin_hivel;
        int xfout_lovel; int xfout_hivel;
        curve_t xf_velcurve;
        Array<int> xfin_locc; Array<int> xfin_hicc;
        Array<int> xfout_locc; Array<int> xfout_hicc;
        curve_t xf_cccurve;

        // pitch
        int transpose;
        int tune;
        int pitch_keycenter; int pitch_keytrack; int pitch_veltrack; int pitch_random;
        int bend_up; int bend_down; int bend_step;

        // filter
        filter_t fil_type; filter_t fil2_type;
        optional<float> cutoff; optional<float> cutoff2;
        Array<int> cutoff_oncc; Array<int> cutoff2_oncc;
        int cutoff_cc; // TODO: this is just a temporary fix to avoid
                       // looping through the cutoff_oncc array
        Array<int> cutoff_smoothcc; Array<int> cutoff2_smoothcc;
        Array<int> cutoff_stepcc; Array<int> cutoff2_stepcc;
        Array<int> cutoff_curvecc; Array<int> cutoff2_curvecc;
        int cutoff_chanaft; int cutoff2_chanaft;
        int cutoff_polyaft; int cutoff2_polyaft;
        float resonance; float resonance2;
        Array<int> resonance_oncc; Array<int> resonance2_oncc;
        Array<int> resonance_smoothcc; Array<int> resonance2_smoothcc;
        Array<int> resonance_stepcc; Array<int> resonance2_stepcc;
        Array<int> resonance_curvecc; Array<int> resonance2_curvecc;
        int fil_keytrack; int fil2_keytrack;
        int fil_keycenter; int fil2_keycenter;
        int fil_veltrack; int fil2_veltrack;
        int fil_random; int fil2_random;

        // per voice equalizer
        float eq1_freq; float eq2_freq; float eq3_freq;
        Array<float> eq1_freq_oncc; Array<float> eq2_freq_oncc; Array<float> eq3_freq_oncc;
        float eq1_vel2freq; float eq2_vel2freq; float eq3_vel2freq;
        float eq1_bw; float eq2_bw; float eq3_bw;
        Array<float> eq1_bw_oncc; Array<float> eq2_bw_oncc; Array<float> eq3_bw_oncc;
        float eq1_gain; float eq2_gain; float eq3_gain;
        Array<float> eq1_gain_oncc; Array<float> eq2_gain_oncc; Array<float> eq3_gain_oncc;
        float eq1_vel2gain; float eq2_vel2gain; float eq3_vel2gain;

        //Deprecated (from version 1)
        float ampeg_delay, ampeg_start, ampeg_attack, ampeg_hold, ampeg_decay, ampeg_sustain, ampeg_release;
        float ampeg_vel2delay, ampeg_vel2attack, ampeg_vel2hold, ampeg_vel2decay, ampeg_vel2sustain, ampeg_vel2release;
        LinuxSampler::ArrayList<CC> ampeg_delaycc, ampeg_startcc, ampeg_attackcc, ampeg_holdcc;
        LinuxSampler::ArrayList<CC> ampeg_decaycc, ampeg_sustaincc, ampeg_releasecc;
        float fileg_delay, fileg_start, fileg_attack, fileg_hold, fileg_decay, fileg_sustain, fileg_release;
        float fileg_vel2delay, fileg_vel2attack, fileg_vel2hold, fileg_vel2decay, fileg_vel2sustain, fileg_vel2release;
        float pitcheg_delay, pitcheg_start, pitcheg_attack, pitcheg_hold, pitcheg_decay, pitcheg_sustain, pitcheg_release;
        float pitcheg_vel2delay, pitcheg_vel2attack, pitcheg_vel2hold, pitcheg_vel2decay, pitcheg_vel2sustain, pitcheg_vel2release;
        int   fileg_depth, pitcheg_depth;
        float amplfo_delay, amplfo_fade, amplfo_freq, amplfo_depth;
        float fillfo_delay, fillfo_fade, fillfo_freq, fillfo_depth;
        float pitchlfo_delay, pitchlfo_fade, pitchlfo_freq;
        int pitchlfo_depth;
        Array<int> pitchlfo_depthcc;
        
        LinuxSampler::ArrayList<CC> pitchlfo_freqcc; // 0 to 20 Hz
        LinuxSampler::ArrayList<CC> fillfo_freqcc; // 0 to 20 Hz
        LinuxSampler::ArrayList<CC> amplfo_freqcc; // 0 to 20 Hz

        // envelope generators
        LinuxSampler::ArrayList<EG> eg;

        // low frequency oscillators
        LinuxSampler::ArrayList<LFO> lfos;
    };

    class Query {
    public:
        uint8_t chan;        // MIDI channel
        uint8_t key;         // MIDI note
        uint8_t vel;         // MIDI velocity
        int bend;            // MIDI pitch bend
        uint8_t bpm;         // host BPM
        uint8_t chanaft;     // MIDI channel pressure
        uint8_t polyaft;     // MIDI polyphonic aftertouch
        uint8_t prog;        // MIDI program change
        float rand;          // generated random number
        trigger_t trig;      // how it was triggered
        uint8_t* cc;         // all 128 CC values
        float timer;         // time since previous region in the group was triggered
        bool* sw;            // state of region key switches, 128 possible values
        uint8_t last_sw_key; // last key pressed in the key switch range
        uint8_t prev_sw_key; // previous note value

        void search(const Instrument* pInstrument);
        void search(const Instrument* pInstrument, int triggercc);
        Region* next();
    private:
        LinuxSampler::ArrayList<Region*>* pRegionList;
        int regionIndex;
    };

    /////////////////////////////////////////////////////////////
    // class Region

    /// Defines Region information of an Instrument
    class Region :
        public Definition
    {
    public:
        Region();
        virtual ~Region();

        Sample* pSample;
        Sample* GetSample(bool create = true);
        void DestroySampleIfNotUsed();

        Region*      GetParent() { return this; }; // needed by EngineBase
        Instrument*  GetInstrument() { return pInstrument; }
        void         SetInstrument(Instrument* pInstrument) { this->pInstrument = pInstrument; }

        bool HasLoop();
        uint GetLoopStart();
        uint GetLoopEnd();
        uint GetLoopCount();

        /// Return true if region is triggered by key. Region is
        /// assumed to come from a search in the lookup table.
        bool OnKey(const Query& q);

        /// Return an articulation for the current state
        Articulation* GetArticulation(int bend, uint8_t bpm, uint8_t chanaft, uint8_t polyaft, uint8_t* cc);

        // unique region id
        int id;

    private:
        Instrument* pInstrument;
        int seq_counter;
    };

    /////////////////////////////////////////////////////////////
    // class Instrument

    /// Provides all neccessary information for the synthesis of an Instrument
    class Instrument : public SampleManager
    {
    public:
        Instrument(std::string name = "Unknown", SampleManager* pSampleManager = NULL);
        virtual ~Instrument();

        std::string GetName() { return name; }
        SampleManager* GetSampleManager() { return pSampleManager; }

        bool DestroyRegion(Region* pRegion);
        bool HasKeyBinding(uint8_t key);
        bool HasKeySwitchBinding(uint8_t key);

        /// List of Regions belonging to this Instrument
        std::vector<Region*> regions;

        friend class File;
        friend class Query;

    private:
        std::string name;
        std::vector<bool> KeyBindings;
        std::vector<bool> KeySwitchBindings;
        SampleManager* pSampleManager;
        LookupTable* pLookupTable;
        LookupTable* pLookupTableCC[128];
    };

    /////////////////////////////////////////////////////////////
    // class Group

    /// A Group act just as a template containing Region default values
    class Group :
        public Definition
    {
    public:
        Group();
        virtual ~Group();

        /// Reset Group to default values
        void Reset();

        /// Create a new Region
        Region* RegionFactory();

        // id counter
        int id;

    };

    /////////////////////////////////////////////////////////////
    // class File

    /// Parses SFZ files and provides abstract access to the data
    class File
    {
    public:
        /// Load an existing SFZ file
        File(std::string file, SampleManager* pSampleManager = NULL);
        virtual ~File();

        /// Returns a pointer to the instrument object
        Instrument* GetInstrument();

    private:
        void  push_header(std::string token);
        void  push_opcode(std::string token);
        int parseKey(const std::string& value);
        EG& eg(int x);
        EGNode& egnode(int x, int y);
        LFO& lfo(int x);

        std::string currentDir;
        /// Pointer to the Instrument belonging to this file
        Instrument* _instrument;

        // state variables
        enum section_t { UNKNOWN, GROUP, REGION, CONTROL };
        section_t _current_section;
        Region* _current_region;
        Group* _current_group;
        Definition* pCurDef;

        // control header directives
        std::string default_path;
        int octave_offset;
        int note_offset;
    };

} // !namespace sfz

#endif // !LIBSFZ_SFZ_H
1	iliev	2012	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	persson	2055	* Copyright (C) 2008 Anders Dahnielson <anders@dahnielson.com> *
6	persson	2167	* Copyright (C) 2009 - 2011 Anders Dahnielson and Grigor Iliev *
7	iliev	2012	* *
8			* This program is free software; you can redistribute it and/or modify *
9			* it under the terms of the GNU General Public License as published by *
10			* the Free Software Foundation; either version 2 of the License, or *
11			* (at your option) any later version. *
12			* *
13			* This program is distributed in the hope that it will be useful, *
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16			* GNU General Public License for more details. *
17			* *
18			* You should have received a copy of the GNU General Public License *
19			* along with this program; if not, write to the Free Software *
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21			* MA 02111-1307 USA *
22			***************************************************************************/
23
24			#ifndef LIBSFZ_SFZ_H
25			#define LIBSFZ_SFZ_H
26
27			#include <fstream>
28			#include <iostream>
29			#include <vector>
30			#include <string>
31			#include <stdexcept>
32
33			#include "../common/SampleFile.h"
34			#include "../common/SampleManager.h"
35	persson	2055	#include "../../common/ArrayList.h"
36	iliev	2012
37			#define TRIGGER_ATTACK ((unsigned char) (1 << 0)) // 0x01
38			#define TRIGGER_RELEASE ((unsigned char) (1 << 1)) // 0x02
39			#define TRIGGER_FIRST ((unsigned char) (1 << 2)) // 0x04
40			#define TRIGGER_LEGATO ((unsigned char) (1 << 3)) // 0x08
41
42	persson	2055	namespace sfz
43	iliev	2012	{
44			// Forward declarations
45			class Articulation;
46			class Region;
47			class Group;
48			class Instrument;
49			class File;
50	persson	2106	class LookupTable;
51	persson	2055
52	iliev	2021	class Sample : public LinuxSampler::SampleFileBase<Region> {
53			public:
54	iliev	2216	Sample(String File, bool DontClose = false, uint offset = 0): LinuxSampler::SampleFileBase<Region>(File, DontClose) {
55			Offset = offset;
56			}
57	iliev	2021	virtual ~Sample() { }
58			};
59	iliev	2012
60			// Enumerations
61			enum sw_vel_t { VEL_CURRENT, VEL_PREVIOUS };
62			enum off_mode_t { OFF_FAST, OFF_NORMAL };
63	persson	2167	enum loop_mode_t { NO_LOOP, ONE_SHOT, LOOP_CONTINUOUS, LOOP_SUSTAIN, LOOP_UNSET };
64	iliev	2012	enum curve_t { GAIN, POWER };
65			enum filter_t { LPF_1P, HPF_1P, BPF_1P, BRF_1P, APF_1P,
66			LPF_2P, HPF_2P, BPF_2P, BRF_2P, PKF_2P,
67			LPF_4P, HPF_4P,
68			LPF_6P, HPF_6P };
69
70			typedef unsigned char trigger_t;
71			typedef unsigned char uint8_t;
72
73	iliev	2021	class SampleManager : public LinuxSampler::SampleManager<Sample, Region> {
74	iliev	2012	public:
75	iliev	2216	Sample* FindSample(std::string samplePath, int offset);
76	iliev	2012
77			protected:
78	iliev	2021	virtual void OnSampleInUse(Sample* pSample) {
79	iliev	2012	pSample->Open();
80			}
81
82	iliev	2021	virtual void OnSampleInNotUse(Sample* pSample) {
83	iliev	2012	pSample->Close();
84			}
85			};
86	iliev	2225
87			class CC {
88			public:
89			uint8_t Controller; ///< MIDI controller number.
90			float Influence; ///< Controller Value.
91
92			CC() { CC(0, 0.0f); }
93
94			CC(uint8_t Controller, float Influence) {
95			this->Controller = Controller;
96			this->Influence = Influence;
97			}
98
99			CC(const CC& cc) { Copy(cc); }
100			void operator=(const CC& cc) { Copy(cc); }
101
102			void Copy(const CC& cc) {
103			Controller = cc.Controller;
104			Influence = cc.Influence;
105			}
106			};
107	iliev	2012
108			/////////////////////////////////////////////////////////////
109			// class Exception
110
111			class Exception :
112			public std::runtime_error
113			{
114			public:
115			Exception(const std::string& msg) :
116			runtime_error(msg)
117			{
118			}
119
120			std::string Message()
121			{
122			return what();
123			}
124
125			void PrintMessage()
126			{
127			std::cerr << what() << std::endl << std::flush;
128			}
129			};
130
131			/////////////////////////////////////////////////////////////
132			// class optional
133
134			// Handy class nicked from LinuxSampler...
135			// Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck
136			// Copyright (C) 2005, 2006 Christian Schoenebeck
137
138			class optional_base
139			{
140			public:
141			class nothing_t { public: nothing_t() {} };
142			static const nothing_t nothing;
143			};
144
145			template<class T>
146			class optional :
147			public optional_base
148			{
149			public:
150			optional()
151			{
152			initialized = false;
153			}
154
155			optional(T data)
156			{
157			this->data = data;
158			initialized = true;
159			}
160
161			optional(nothing_t)
162			{
163			initialized = false;
164			}
165
166			template <class T_inner>
167			optional(T_inner data)
168			{
169			this->data = T(data);
170			initialized = true;
171			}
172
173			const T& get() const throw (Exception)
174			{
175			if (!initialized) throw Exception("optional variable not initialized");
176			return data;
177			}
178
179			T& get() throw (Exception)
180			{
181			if (!initialized) throw Exception("optional variable not initialized");
182			return data;
183			}
184
185			void unset()
186			{
187			initialized = false;
188			}
189
190			optional& operator =(const optional& arg) throw (Exception)
191			{
192			if (!arg.initialized) {
193			initialized = false;
194			} else {
195			this->data = arg.data;
196			initialized = true;
197			}
198			return *this;
199			}
200
201			optional& operator =(const T& arg)
202			{
203			this->data = arg;
204			initialized = true;
205			return *this;
206			}
207
208			const T& operator *() const throw (Exception) { return get(); }
209			T& operator *() throw (Exception) { return get(); }
210
211			const T* operator ->() const throw (Exception)
212			{
213			if (!initialized) throw Exception("optional variable not initialized");
214			return &data;
215			}
216
217			T* operator ->() throw (Exception)
218			{
219			if (!initialized) throw Exception("optional variable not initialized");
220			return &data;
221			}
222
223			operator bool() const { return initialized; }
224			bool operator !() const { return !initialized; }
225
226			protected:
227			T data;
228			bool initialized;
229			};
230
231			/////////////////////////////////////////////////////////////
232			// class Articulation
233
234			// Articulation containing all performance parameters for synthesis
235			class Articulation
236			{
237			public:
238			Articulation();
239			virtual ~Articulation();
240			};
241
242	persson	2055	class EGNode
243			{
244			public:
245			float time;
246			float level;
247			float shape;
248			float curve;
249	iliev	2229	LinuxSampler::ArrayList<CC> time_oncc;
250			LinuxSampler::ArrayList<CC> level_oncc;
251
252	persson	2055	EGNode();
253	iliev	2229	EGNode(const EGNode& egNode) { Copy(egNode); }
254			void operator=(const EGNode& egNode) { Copy(egNode); }
255			void Copy(const EGNode& egNode);
256	persson	2055	};
257
258			class EG
259			{
260			public:
261			LinuxSampler::ArrayList<EGNode> node;
262			int sustain;
263			int loop;
264			int loop_count;
265			float amplitude;
266			float cutoff;
267			EG();
268	iliev	2229	EG(const EG& eg) { Copy(eg); }
269			void operator=(const EG& eg) { Copy(eg); }
270			void Copy(const EG& eg);
271	persson	2055	};
272
273	iliev	2218	class LFO
274			{
275			public:
276	iliev	2225	float delay; // 0 to 100 seconds
277	iliev	2218	float freq; // 0 to 20 Hz
278	iliev	2226	float fade; // 0 to 100 seconds
279	iliev	2225	float phase; // 0 to 360 degrees
280	iliev	2218	uint wave; // 0 to 4294967296
281	iliev	2221	float volume; // -144 to 6 dB
282	iliev	2218	int pitch; // -9600 to 9600 cents
283			int cutoff; // -9600 to 9600 cents
284			float resonance; // 0 to 40 dB
285			float pan; // -100 to 100 %
286	iliev	2225
287	iliev	2227	LinuxSampler::ArrayList<CC> freq_oncc; // 0 to 20 Hz
288	iliev	2226	LinuxSampler::ArrayList<CC> fade_oncc; // 0 to 100 seconds
289	iliev	2225	LinuxSampler::ArrayList<CC> phase_oncc; // 0 to 360 degrees
290			LinuxSampler::ArrayList<CC> pitch_oncc;
291
292	iliev	2218	LFO();
293	iliev	2229	LFO(const LFO& lfo) { Copy(lfo); }
294			void operator=(const LFO& lfo) { Copy(lfo); }
295			void Copy(const LFO& lfo);
296	iliev	2218	};
297
298	persson	2091	// Fixed size array with copy-on-write semantics
299			template<class T>
300			class Array
301			{
302			private:
303			struct Rep {
304			int refcount;
305			T a[128];
306
307			Rep() : refcount(1) { }
308			static void release(Rep* rep) {
309			if (!--rep->refcount) delete rep;
310			}
311			} *ptr;
312			public:
313			Array() : ptr(0) { }
314			~Array() { Rep::release(ptr); }
315
316			Array& operator=(const Array& array) {
317			if (this != &array) {
318			ptr = array.ptr;
319			if (ptr) ptr->refcount++;
320			}
321			return *this;
322			}
323
324			const T& operator[](int i) const { return ptr->a[i]; }
325
326			void set(int i, const T& v) {
327			if (!ptr) {
328			ptr = new Rep;
329			} else if (ptr->refcount > 1 && ptr->a[i] != v) {
330			Rep* newptr = new Rep(*ptr);
331			newptr->refcount = 1;
332			Rep::release(ptr);
333			ptr = newptr;
334			}
335			ptr->a[i] = v;
336			}
337			};
338
339	iliev	2012	/////////////////////////////////////////////////////////////
340			// class Definition
341
342			// Base definition used by groups and regions
343			class Definition
344			{
345			public:
346			Definition();
347			virtual ~Definition();
348
349			// sample definition
350			std::string sample;
351
352			// input controls
353			int lochan; int hichan;
354			int lokey; int hikey;
355			int lovel; int hivel;
356	persson	2091	Array<int> locc; Array<int> hicc;
357	iliev	2012	int lobend; int hibend;
358	persson	2106	float lobpm; float hibpm;
359	iliev	2012	int lochanaft; int hichanaft;
360			int lopolyaft; int hipolyaft;
361			int loprog; int hiprog;
362			float lorand; float hirand;
363			float lotimer; float hitimer;
364
365			int seq_length;
366			int seq_position;
367
368	persson	2091	Array<int> start_locc; Array<int> start_hicc;
369			Array<int> stop_locc; Array<int> stop_hicc;
370	iliev	2012
371			int sw_lokey; int sw_hikey;
372			int sw_last;
373			int sw_down;
374			int sw_up;
375			int sw_previous;
376			sw_vel_t sw_vel;
377
378			trigger_t trigger;
379
380	iliev	2027	uint group;
381	persson	2114	uint off_by;
382	iliev	2012	off_mode_t off_mode;
383
384	persson	2091	Array<int> on_locc; Array<int> on_hicc;
385	iliev	2012
386			// sample player
387			optional<int> count;
388	persson	2091	optional<float> delay; optional<float> delay_random; Array<optional<float> > delay_oncc;
389	iliev	2012	optional<int> delay_beats; optional<int> stop_beats;
390	persson	2091	optional<int> delay_samples; Array<optional<int> > delay_samples_oncc;
391	iliev	2012	optional<int> end;
392			optional<float> loop_crossfade;
393	persson	2091	optional<int> offset; optional<int> offset_random; Array<optional<int> > offset_oncc;
394	iliev	2012	loop_mode_t loop_mode;
395			optional<int> loop_start; optional<int> loop_end;
396			optional<int> sync_beats;
397			optional<int> sync_offset;
398
399			// amplifier
400			float volume;
401			float pan;
402			float width;
403			float position;
404	persson	2091	float amp_keytrack; int amp_keycenter; float amp_veltrack; Array<float> amp_velcurve; float amp_random;
405	iliev	2012	float rt_decay;
406	persson	2091	Array<float> gain_oncc;
407	iliev	2012	int xfin_lokey; int xfin_hikey;
408			int xfout_lokey; int xfout_hikey;
409			curve_t xf_keycurve;
410			int xfin_lovel; int xfin_hivel;
411			int xfout_lovel; int xfout_hivel;
412			curve_t xf_velcurve;
413	persson	2091	Array<int> xfin_locc; Array<int> xfin_hicc;
414			Array<int> xfout_locc; Array<int> xfout_hicc;
415	iliev	2012	curve_t xf_cccurve;
416
417			// pitch
418			int transpose;
419			int tune;
420			int pitch_keycenter; int pitch_keytrack; int pitch_veltrack; int pitch_random;
421			int bend_up; int bend_down; int bend_step;
422
423			// filter
424			filter_t fil_type; filter_t fil2_type;
425			optional<float> cutoff; optional<float> cutoff2;
426	persson	2091	Array<int> cutoff_oncc; Array<int> cutoff2_oncc;
427	persson	2175	int cutoff_cc; // TODO: this is just a temporary fix to avoid
428			// looping through the cutoff_oncc array
429	persson	2091	Array<int> cutoff_smoothcc; Array<int> cutoff2_smoothcc;
430			Array<int> cutoff_stepcc; Array<int> cutoff2_stepcc;
431			Array<int> cutoff_curvecc; Array<int> cutoff2_curvecc;
432	iliev	2012	int cutoff_chanaft; int cutoff2_chanaft;
433			int cutoff_polyaft; int cutoff2_polyaft;
434			float resonance; float resonance2;
435	persson	2091	Array<int> resonance_oncc; Array<int> resonance2_oncc;
436			Array<int> resonance_smoothcc; Array<int> resonance2_smoothcc;
437			Array<int> resonance_stepcc; Array<int> resonance2_stepcc;
438			Array<int> resonance_curvecc; Array<int> resonance2_curvecc;
439	iliev	2012	int fil_keytrack; int fil2_keytrack;
440			int fil_keycenter; int fil2_keycenter;
441			int fil_veltrack; int fil2_veltrack;
442			int fil_random; int fil2_random;
443
444			// per voice equalizer
445			float eq1_freq; float eq2_freq; float eq3_freq;
446	persson	2091	Array<float> eq1_freq_oncc; Array<float> eq2_freq_oncc; Array<float> eq3_freq_oncc;
447	iliev	2012	float eq1_vel2freq; float eq2_vel2freq; float eq3_vel2freq;
448			float eq1_bw; float eq2_bw; float eq3_bw;
449	persson	2091	Array<float> eq1_bw_oncc; Array<float> eq2_bw_oncc; Array<float> eq3_bw_oncc;
450	iliev	2012	float eq1_gain; float eq2_gain; float eq3_gain;
451	persson	2091	Array<float> eq1_gain_oncc; Array<float> eq2_gain_oncc; Array<float> eq3_gain_oncc;
452	iliev	2012	float eq1_vel2gain; float eq2_vel2gain; float eq3_vel2gain;
453	iliev	2018
454			//Deprecated (from version 1)
455			float ampeg_delay, ampeg_start, ampeg_attack, ampeg_hold, ampeg_decay, ampeg_sustain, ampeg_release;
456	persson	2176	float ampeg_vel2delay, ampeg_vel2attack, ampeg_vel2hold, ampeg_vel2decay, ampeg_vel2sustain, ampeg_vel2release;
457	iliev	2229	LinuxSampler::ArrayList<CC> ampeg_delaycc, ampeg_startcc, ampeg_attackcc, ampeg_holdcc;
458			LinuxSampler::ArrayList<CC> ampeg_decaycc, ampeg_sustaincc, ampeg_releasecc;
459	iliev	2018	float fileg_delay, fileg_start, fileg_attack, fileg_hold, fileg_decay, fileg_sustain, fileg_release;
460	iliev	2222	float fileg_vel2delay, fileg_vel2attack, fileg_vel2hold, fileg_vel2decay, fileg_vel2sustain, fileg_vel2release;
461	iliev	2018	float pitcheg_delay, pitcheg_start, pitcheg_attack, pitcheg_hold, pitcheg_decay, pitcheg_sustain, pitcheg_release;
462	iliev	2220	float pitcheg_vel2delay, pitcheg_vel2attack, pitcheg_vel2hold, pitcheg_vel2decay, pitcheg_vel2sustain, pitcheg_vel2release;
463	iliev	2222	int fileg_depth, pitcheg_depth;
464	persson	2072	float amplfo_delay, amplfo_fade, amplfo_freq, amplfo_depth;
465			float fillfo_delay, fillfo_fade, fillfo_freq, fillfo_depth;
466			float pitchlfo_delay, pitchlfo_fade, pitchlfo_freq;
467			int pitchlfo_depth;
468	iliev	2224	Array<int> pitchlfo_depthcc;
469	iliev	2227
470			LinuxSampler::ArrayList<CC> pitchlfo_freqcc; // 0 to 20 Hz
471			LinuxSampler::ArrayList<CC> fillfo_freqcc; // 0 to 20 Hz
472			LinuxSampler::ArrayList<CC> amplfo_freqcc; // 0 to 20 Hz
473	persson	2055
474			// envelope generators
475			LinuxSampler::ArrayList<EG> eg;
476	iliev	2218
477			// low frequency oscillators
478			LinuxSampler::ArrayList<LFO> lfos;
479	iliev	2012	};
480
481	persson	2101	class Query {
482			public:
483			uint8_t chan; // MIDI channel
484	persson	2115	uint8_t key; // MIDI note
485	persson	2101	uint8_t vel; // MIDI velocity
486			int bend; // MIDI pitch bend
487			uint8_t bpm; // host BPM
488			uint8_t chanaft; // MIDI channel pressure
489			uint8_t polyaft; // MIDI polyphonic aftertouch
490			uint8_t prog; // MIDI program change
491			float rand; // generated random number
492			trigger_t trig; // how it was triggered
493			uint8_t* cc; // all 128 CC values
494			float timer; // time since previous region in the group was triggered
495			bool* sw; // state of region key switches, 128 possible values
496			uint8_t last_sw_key; // last key pressed in the key switch range
497			uint8_t prev_sw_key; // previous note value
498	persson	2106
499			void search(const Instrument* pInstrument);
500	persson	2115	void search(const Instrument* pInstrument, int triggercc);
501	persson	2106	Region* next();
502	persson	2101	private:
503	persson	2106	LinuxSampler::ArrayList<Region> pRegionList;
504			int regionIndex;
505	persson	2101	};
506
507	iliev	2012	/////////////////////////////////////////////////////////////
508			// class Region
509
510			/// Defines Region information of an Instrument
511			class Region :
512			public Definition
513			{
514			public:
515			Region();
516			virtual ~Region();
517
518	iliev	2021	Sample* pSample;
519			Sample* GetSample(bool create = true);
520	iliev	2012	void DestroySampleIfNotUsed();
521
522			Region* GetParent() { return this; }; // needed by EngineBase
523			Instrument* GetInstrument() { return pInstrument; }
524			void SetInstrument(Instrument* pInstrument) { this->pInstrument = pInstrument; }
525
526	iliev	2021	bool HasLoop();
527			uint GetLoopStart();
528			uint GetLoopEnd();
529			uint GetLoopCount();
530
531	persson	2106	/// Return true if region is triggered by key. Region is
532			/// assumed to come from a search in the lookup table.
533	persson	2101	bool OnKey(const Query& q);
534	iliev	2012
535			/// Return an articulation for the current state
536	persson	2101	Articulation* GetArticulation(int bend, uint8_t bpm, uint8_t chanaft, uint8_t polyaft, uint8_t* cc);
537	iliev	2012
538			// unique region id
539			int id;
540
541			private:
542			Instrument* pInstrument;
543	persson	2072	int seq_counter;
544	iliev	2012	};
545
546			/////////////////////////////////////////////////////////////
547			// class Instrument
548
549			/// Provides all neccessary information for the synthesis of an Instrument
550			class Instrument : public SampleManager
551			{
552			public:
553			Instrument(std::string name = "Unknown", SampleManager* pSampleManager = NULL);
554			virtual ~Instrument();
555
556			std::string GetName() { return name; }
557			SampleManager* GetSampleManager() { return pSampleManager; }
558
559			bool DestroyRegion(Region* pRegion);
560			bool HasKeyBinding(uint8_t key);
561			bool HasKeySwitchBinding(uint8_t key);
562
563			/// List of Regions belonging to this Instrument
564			std::vector<Region*> regions;
565
566	persson	2106	friend class File;
567			friend class Query;
568	iliev	2012
569			private:
570			std::string name;
571			std::vector<bool> KeyBindings;
572			std::vector<bool> KeySwitchBindings;
573			SampleManager* pSampleManager;
574	persson	2106	LookupTable* pLookupTable;
575	persson	2115	LookupTable* pLookupTableCC[128];
576	iliev	2012	};
577
578			/////////////////////////////////////////////////////////////
579			// class Group
580
581			/// A Group act just as a template containing Region default values
582			class Group :
583			public Definition
584			{
585			public:
586			Group();
587			virtual ~Group();
588
589			/// Reset Group to default values
590			void Reset();
591
592			/// Create a new Region
593			Region* RegionFactory();
594
595			// id counter
596			int id;
597
598			};
599
600			/////////////////////////////////////////////////////////////
601			// class File
602
603			/// Parses SFZ files and provides abstract access to the data
604			class File
605			{
606			public:
607			/// Load an existing SFZ file
608			File(std::string file, SampleManager* pSampleManager = NULL);
609			virtual ~File();
610
611			/// Returns a pointer to the instrument object
612			Instrument* GetInstrument();
613
614			private:
615			void push_header(std::string token);
616			void push_opcode(std::string token);
617	persson	2058	int parseKey(const std::string& value);
618	persson	2055	EG& eg(int x);
619			EGNode& egnode(int x, int y);
620	iliev	2218	LFO& lfo(int x);
621	iliev	2012
622			std::string currentDir;
623			/// Pointer to the Instrument belonging to this file
624			Instrument* _instrument;
625
626			// state variables
627			enum section_t { UNKNOWN, GROUP, REGION, CONTROL };
628			section_t _current_section;
629			Region* _current_region;
630			Group* _current_group;
631			Definition* pCurDef;
632
633			// control header directives
634			std::string default_path;
635			int octave_offset;
636			int note_offset;
637			};
638
639			} // !namespace sfz
640
641			#endif // !LIBSFZ_SFZ_H