engines/common/Note.h

/*
 * Copyright (c) 2016 - 2017 Christian Schoenebeck
 *
 * http://www.linuxsampler.org
 *
 * This file is part of LinuxSampler and released under the same terms.
 * See README file for details.
 */ 

#ifndef LS_NOTE_H
#define LS_NOTE_H

#include "../../common/Pool.h"
#include "Event.h"
#include "Fade.h"

#define DEFAULT_NOTE_VOLUME_TIME_S  0.013f /* 13ms */
#define DEFAULT_NOTE_PITCH_TIME_S   0.013f /* 13ms */

namespace LinuxSampler {

    /**
     * Abstract base class of its deriving @c Note class, this class (NoteBase)
     * is not intended to be instantiated directly. It just provides access to
     * the parts of a Note object which do not depend on any C++ template
     * parameter.
     */
    class NoteBase {
    public:
        int hostKey; ///< Key on which this is @c Note is allocated on. This is usually the note-on event's note number, however in case of a child note this will rather be the parent note's key instead!
        note_id_t parentNoteID; ///< If not null: unique ID of the parent note of this note (see comments of field @c pChildNotes).
        RTList<note_id_t>* pChildNotes; ///< Note ID list of "child" notes of this note. These are special notes that must be released once this note gets released.
        Event cause; ///< Copy of the original event (usually a note-on event) which caused this note.
        event_id_t eventID; ///< Unique ID of the actual original @c Event which caused this note.
        sched_time_t triggerSchedTime; ///< Engine's scheduler time when this note was launched.
        /// Optional synthesis parameters that might be overridden (by calling real-time instrument script functions like change_vol(), change_pitch(), etc.).
        struct  _Override {
            float Volume;       ///< as linear amplification ratio (1.0 being neutral)
            float VolumeTime;   ///< Transition duration (in seconds) for changes to @c Volume.
            float Pitch;        ///< as linear frequency ratio (1.0 being neutral)
            float PitchTime;    ///< Transition duration (in seconds) for changes to @c Pitch.
            float Pan;          ///< between -1.0 (most left) and +1.0 (most right) and 0.0 being neutral.
            int64_t PanSources; ///< Might be used for calculating an average pan value in differential way: amount of times the Pan value had been changed and shall be calculated relatively upon.
            float Cutoff;       ///< between 0.0 and 1.0
            float Resonance;    ///< between 0.0 and 1.0
            float Attack;       ///< between 0.0 and 1.0
            float Decay;        ///< between 0.0 and 1.0
            float Release;      ///< between 0.0 and 1.0
            float AmpLFODepth;  ///< between 0.0 and 1.0
            float AmpLFOFreq;   ///< between 0.0 and 1.0
            float PitchLFODepth; ///< between 0.0 and 1.0
            float PitchLFOFreq; ///< between 0.0 and 1.0
            fade_curve_t VolumeCurve;
            fade_curve_t PitchCurve;
            int SampleOffset; ///< Where the sample shall start playback in microseconds (otherwise this is -1 for being ignored).
        } Override;
        /// Sampler format specific informations and variables.
        union _Format {
            /// Gigasampler/GigaStudio format specifics.
            struct _Gig {
                uint8_t DimMask; ///< May be used to override the Dimension zone to be selected for a new voice: each 1 bit means that respective bit shall be overridden by taking the respective bit from DimBits instead.
                uint8_t DimBits; ///< Used only in conjunction with DimMask: Dimension bits that shall be selected.
            } Gig;
        } Format;
        int userPar[4]; ///< Used only for real-time instrument script functions set_event_par() and get_event_par() to store script author's user specific data ($EVENT_PAR_0 to $EVENT_PAR_3).
    protected:
        NoteBase() : hostKey(0), parentNoteID(0), pChildNotes(NULL) {
            Override.Volume     = 1.f;
            Override.VolumeTime = DEFAULT_NOTE_VOLUME_TIME_S;
            Override.Pitch      = 1.f;
            Override.PitchTime  = DEFAULT_NOTE_PITCH_TIME_S;
            Override.Pan        = 0.f;
            Override.PanSources = 0;
            Override.Cutoff     = 1.f;
            Override.Resonance  = 1.f;
            Override.Attack     = 1.f;
            Override.Decay      = 1.f;
            Override.Release    = 1.f;
            Override.AmpLFODepth   = 1.f;
            Override.AmpLFOFreq    = 1.f;
            Override.PitchLFODepth = 1.f;
            Override.PitchLFOFreq  = 1.f;
            Override.VolumeCurve = DEFAULT_FADE_CURVE;
            Override.PitchCurve  = DEFAULT_FADE_CURVE;
            Override.SampleOffset = -1;

            Format = _Format();

            userPar[0] = 0;
            userPar[1] = 0;
            userPar[2] = 0;
            userPar[3] = 0;
        }
    };

    /**
     * Contains the voices caused by one specific note, as well as basic
     * information about the note itself. You can see a Note object as one
     * specific event in time where one or more voices were spawned at the same
     * time and all those voices due to the same cause.
     *
     * For example when you press down and hold the sustain pedal, and then
     * trigger the same note on the keyboard multiple times, for each key
     * strokes a separate Note instance is created. Assuming you have a layered
     * sound with 4 layers, then for each note that is triggered 4 voices will
     * be spawned and assigned to the same Note object. By grouping those voices
     * to one specific Note object, it allows to control the synthesis paramters
     * of those layered voices simultaniously.
     *
     * If your instrument contains a real-time instrument script, then that
     * script might also trigger additional voices programmatically (by
     * calling the built-in script function play_note()). Each time the script
     * calls play_note() a new Note instance is created and the script may then
     * further control the voices of specific notes independently from each
     * other. For example for each key stroke on your keyboard the instrument
     * script might trigger 3 additional notes programmatically and assign a
     * different tuning filter parameters for each one of the 3 notes
     * independently.
     */
    template<class V>
    class Note : public NoteBase {
    public:
        RTList<V>* pActiveVoices; ///< Contains the active voices associated with this note.

        Note() : NoteBase(), pActiveVoices(NULL) {}

        virtual ~Note() {
            if (pChildNotes) delete pChildNotes;
            if (pActiveVoices) delete pActiveVoices;
        }

        void init(Pool<V>* pVoicePool, Pool<note_id_t>* pNoteIDPool) {
            if (pActiveVoices) delete pActiveVoices;
            pActiveVoices = new RTList<V>(pVoicePool);
            if (pChildNotes) delete pChildNotes;
            pChildNotes = new RTList<note_id_t>(pNoteIDPool);
        }

        void reset() {
            hostKey = 0;
            parentNoteID = 0;
            if (pChildNotes)
                pChildNotes->clear();
            cause = Event();
            eventID = 0;
            Override.Volume     = 1.f;
            Override.VolumeTime = DEFAULT_NOTE_VOLUME_TIME_S;
            Override.Pitch      = 1.f;
            Override.PitchTime  = DEFAULT_NOTE_PITCH_TIME_S;
            Override.Pan        = 0.f;
            Override.PanSources = 0;
            Override.Cutoff     = 1.f;
            Override.Resonance  = 1.f;
            Override.Attack     = 1.f;
            Override.Decay      = 1.f;
            Override.Release    = 1.f;
            Override.AmpLFODepth   = 1.f;
            Override.AmpLFOFreq    = 1.f;
            Override.PitchLFODepth = 1.f;
            Override.PitchLFOFreq  = 1.f;
            Override.VolumeCurve = DEFAULT_FADE_CURVE;
            Override.PitchCurve  = DEFAULT_FADE_CURVE;
            Override.SampleOffset = -1;
            Format = _Format();
            userPar[0] = 0;
            userPar[1] = 0;
            userPar[2] = 0;
            userPar[3] = 0;
            if (pActiveVoices) {
                typename RTList<V>::Iterator itVoice = pActiveVoices->first();
                typename RTList<V>::Iterator itVoicesEnd = pActiveVoices->end();
                for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
                    itVoice->VoiceFreed();
                }
                pActiveVoices->clear();
            }
        }
    };

} // namespace LinuxSampler

#endif // LS_NOTE_H
1	/*
2	* Copyright (c) 2016 - 2017 Christian Schoenebeck
3	*
4	* http://www.linuxsampler.org
5	*
6	* This file is part of LinuxSampler and released under the same terms.
7	* See README file for details.
8	*/
9
10	#ifndef LS_NOTE_H
11	#define LS_NOTE_H
12
13	#include "../../common/Pool.h"
14	#include "Event.h"
15	#include "Fade.h"
16
17	#define DEFAULT_NOTE_VOLUME_TIME_S 0.013f /* 13ms */
18	#define DEFAULT_NOTE_PITCH_TIME_S 0.013f /* 13ms */
19
20	namespace LinuxSampler {
21
22	/**
23	* Abstract base class of its deriving @c Note class, this class (NoteBase)
24	* is not intended to be instantiated directly. It just provides access to
25	* the parts of a Note object which do not depend on any C++ template
26	* parameter.
27	*/
28	class NoteBase {
29	public:
30	int hostKey; ///< Key on which this is @c Note is allocated on. This is usually the note-on event's note number, however in case of a child note this will rather be the parent note's key instead!
31	note_id_t parentNoteID; ///< If not null: unique ID of the parent note of this note (see comments of field @c pChildNotes).
32	RTList<note_id_t>* pChildNotes; ///< Note ID list of "child" notes of this note. These are special notes that must be released once this note gets released.
33	Event cause; ///< Copy of the original event (usually a note-on event) which caused this note.
34	event_id_t eventID; ///< Unique ID of the actual original @c Event which caused this note.
35	sched_time_t triggerSchedTime; ///< Engine's scheduler time when this note was launched.
36	/// Optional synthesis parameters that might be overridden (by calling real-time instrument script functions like change_vol(), change_pitch(), etc.).
37	struct _Override {
38	float Volume; ///< as linear amplification ratio (1.0 being neutral)
39	float VolumeTime; ///< Transition duration (in seconds) for changes to @c Volume.
40	float Pitch; ///< as linear frequency ratio (1.0 being neutral)
41	float PitchTime; ///< Transition duration (in seconds) for changes to @c Pitch.
42	float Pan; ///< between -1.0 (most left) and +1.0 (most right) and 0.0 being neutral.
43	int64_t PanSources; ///< Might be used for calculating an average pan value in differential way: amount of times the Pan value had been changed and shall be calculated relatively upon.
44	float Cutoff; ///< between 0.0 and 1.0
45	float Resonance; ///< between 0.0 and 1.0
46	float Attack; ///< between 0.0 and 1.0
47	float Decay; ///< between 0.0 and 1.0
48	float Release; ///< between 0.0 and 1.0
49	float AmpLFODepth; ///< between 0.0 and 1.0
50	float AmpLFOFreq; ///< between 0.0 and 1.0
51	float PitchLFODepth; ///< between 0.0 and 1.0
52	float PitchLFOFreq; ///< between 0.0 and 1.0
53	fade_curve_t VolumeCurve;
54	fade_curve_t PitchCurve;
55	int SampleOffset; ///< Where the sample shall start playback in microseconds (otherwise this is -1 for being ignored).
56	} Override;
57	/// Sampler format specific informations and variables.
58	union _Format {
59	/// Gigasampler/GigaStudio format specifics.
60	struct _Gig {
61	uint8_t DimMask; ///< May be used to override the Dimension zone to be selected for a new voice: each 1 bit means that respective bit shall be overridden by taking the respective bit from DimBits instead.
62	uint8_t DimBits; ///< Used only in conjunction with DimMask: Dimension bits that shall be selected.
63	} Gig;
64	} Format;
65	int userPar[4]; ///< Used only for real-time instrument script functions set_event_par() and get_event_par() to store script author's user specific data ($EVENT_PAR_0 to $EVENT_PAR_3).
66	protected:
67	NoteBase() : hostKey(0), parentNoteID(0), pChildNotes(NULL) {
68	Override.Volume = 1.f;
69	Override.VolumeTime = DEFAULT_NOTE_VOLUME_TIME_S;
70	Override.Pitch = 1.f;
71	Override.PitchTime = DEFAULT_NOTE_PITCH_TIME_S;
72	Override.Pan = 0.f;
73	Override.PanSources = 0;
74	Override.Cutoff = 1.f;
75	Override.Resonance = 1.f;
76	Override.Attack = 1.f;
77	Override.Decay = 1.f;
78	Override.Release = 1.f;
79	Override.AmpLFODepth = 1.f;
80	Override.AmpLFOFreq = 1.f;
81	Override.PitchLFODepth = 1.f;
82	Override.PitchLFOFreq = 1.f;
83	Override.VolumeCurve = DEFAULT_FADE_CURVE;
84	Override.PitchCurve = DEFAULT_FADE_CURVE;
85	Override.SampleOffset = -1;
86
87	Format = _Format();
88
89	userPar[0] = 0;
90	userPar[1] = 0;
91	userPar[2] = 0;
92	userPar[3] = 0;
93	}
94	};
95
96	/**
97	* Contains the voices caused by one specific note, as well as basic
98	* information about the note itself. You can see a Note object as one
99	* specific event in time where one or more voices were spawned at the same
100	* time and all those voices due to the same cause.
101	*
102	* For example when you press down and hold the sustain pedal, and then
103	* trigger the same note on the keyboard multiple times, for each key
104	* strokes a separate Note instance is created. Assuming you have a layered
105	* sound with 4 layers, then for each note that is triggered 4 voices will
106	* be spawned and assigned to the same Note object. By grouping those voices
107	* to one specific Note object, it allows to control the synthesis paramters
108	* of those layered voices simultaniously.
109	*
110	* If your instrument contains a real-time instrument script, then that
111	* script might also trigger additional voices programmatically (by
112	* calling the built-in script function play_note()). Each time the script
113	* calls play_note() a new Note instance is created and the script may then
114	* further control the voices of specific notes independently from each
115	* other. For example for each key stroke on your keyboard the instrument
116	* script might trigger 3 additional notes programmatically and assign a
117	* different tuning filter parameters for each one of the 3 notes
118	* independently.
119	*/
120	template<class V>
121	class Note : public NoteBase {
122	public:
123	RTList<V>* pActiveVoices; ///< Contains the active voices associated with this note.
124
125	Note() : NoteBase(), pActiveVoices(NULL) {}
126
127	virtual ~Note() {
128	if (pChildNotes) delete pChildNotes;
129	if (pActiveVoices) delete pActiveVoices;
130	}
131
132	void init(Pool<V>* pVoicePool, Pool<note_id_t>* pNoteIDPool) {
133	if (pActiveVoices) delete pActiveVoices;
134	pActiveVoices = new RTList<V>(pVoicePool);
135	if (pChildNotes) delete pChildNotes;
136	pChildNotes = new RTList<note_id_t>(pNoteIDPool);
137	}
138
139	void reset() {
140	hostKey = 0;
141	parentNoteID = 0;
142	if (pChildNotes)
143	pChildNotes->clear();
144	cause = Event();
145	eventID = 0;
146	Override.Volume = 1.f;
147	Override.VolumeTime = DEFAULT_NOTE_VOLUME_TIME_S;
148	Override.Pitch = 1.f;
149	Override.PitchTime = DEFAULT_NOTE_PITCH_TIME_S;
150	Override.Pan = 0.f;
151	Override.PanSources = 0;
152	Override.Cutoff = 1.f;
153	Override.Resonance = 1.f;
154	Override.Attack = 1.f;
155	Override.Decay = 1.f;
156	Override.Release = 1.f;
157	Override.AmpLFODepth = 1.f;
158	Override.AmpLFOFreq = 1.f;
159	Override.PitchLFODepth = 1.f;
160	Override.PitchLFOFreq = 1.f;
161	Override.VolumeCurve = DEFAULT_FADE_CURVE;
162	Override.PitchCurve = DEFAULT_FADE_CURVE;
163	Override.SampleOffset = -1;
164	Format = _Format();
165	userPar[0] = 0;
166	userPar[1] = 0;
167	userPar[2] = 0;
168	userPar[3] = 0;
169	if (pActiveVoices) {
170	typename RTList<V>::Iterator itVoice = pActiveVoices->first();
171	typename RTList<V>::Iterator itVoicesEnd = pActiveVoices->end();
172	for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
173	itVoice->VoiceFreed();
174	}
175	pActiveVoices->clear();
176	}
177	}
178	};
179
180	} // namespace LinuxSampler
181
182	#endif // LS_NOTE_H