/[svn]/linuxsampler/trunk/src/engines/common/Note.h
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Contents of /linuxsampler/trunk/src/engines/common/Note.h

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Revision 2880 - (show annotations) (download) (as text)
Tue Apr 19 15:49:34 2016 UTC (7 years, 11 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 3487 byte(s)
- Fixed compile error regarding latest commit and older compilers.

1 /*
2 * Copyright (c) 2016 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
16 namespace LinuxSampler {
17
18 /**
19 * Abstract base class of its deriving @c Note class, this class (NoteBase)
20 * is not intended to be instantiated directly. It just provides access to
21 * the parts of a Note object which do not depend on any C++ template
22 * parameter.
23 */
24 class NoteBase {
25 public:
26 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!
27 note_id_t parentNoteID; ///< If not null: unique ID of the parent note of this note (see comments of field @c pChildNotes).
28 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.
29 Event cause; ///< Copy of the original event (usually a note-on event) which caused this note.
30 event_id_t eventID; ///< Unique ID of the actual original @c Event which caused this note.
31 /// Sampler format specific informations and variables.
32 union _Format {
33 /// Gigasampler/GigaStudio format specifics.
34 struct _Gig {
35 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.
36 uint8_t DimBits; ///< Used only in conjunction with DimMask: Dimension bits that shall be selected.
37 } Gig;
38 } Format;
39 protected:
40 NoteBase() : hostKey(0), parentNoteID(0), pChildNotes(NULL) {
41 Format = _Format();
42 }
43 };
44
45 /**
46 * Contains the voices caused by one specific note, as well as basic
47 * informations about the note itself.
48 */
49 template<class V>
50 class Note : public NoteBase {
51 public:
52 RTList<V>* pActiveVoices; ///< Contains the active voices associated with this note.
53
54 Note() : NoteBase(), pActiveVoices(NULL) {}
55
56 virtual ~Note() {
57 if (pChildNotes) delete pChildNotes;
58 if (pActiveVoices) delete pActiveVoices;
59 }
60
61 void init(Pool<V>* pVoicePool, Pool<note_id_t>* pNoteIDPool) {
62 if (pActiveVoices) delete pActiveVoices;
63 pActiveVoices = new RTList<V>(pVoicePool);
64 if (pChildNotes) delete pChildNotes;
65 pChildNotes = new RTList<note_id_t>(pNoteIDPool);
66 }
67
68 void reset() {
69 hostKey = 0;
70 parentNoteID = 0;
71 if (pChildNotes)
72 pChildNotes->clear();
73 cause = Event();
74 eventID = 0;
75 Format = _Format();
76 if (pActiveVoices) {
77 typename RTList<V>::Iterator itVoice = pActiveVoices->first();
78 typename RTList<V>::Iterator itVoicesEnd = pActiveVoices->end();
79 for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
80 itVoice->VoiceFreed();
81 }
82 pActiveVoices->clear();
83 }
84 }
85 };
86
87 } // namespace LinuxSampler
88
89 #endif // LS_NOTE_H

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