1 |
/*************************************************************************** |
2 |
* * |
3 |
* Copyright (C) 2006 Christian Schoenebeck * |
4 |
* * |
5 |
* This library is free software; you can redistribute it and/or modify * |
6 |
* it under the terms of the GNU General Public License as published by * |
7 |
* the Free Software Foundation; either version 2 of the License, or * |
8 |
* (at your option) any later version. * |
9 |
* * |
10 |
* This library is distributed in the hope that it will be useful, * |
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
13 |
* GNU General Public License for more details. * |
14 |
* * |
15 |
* You should have received a copy of the GNU General Public License * |
16 |
* along with this library; if not, write to the Free Software * |
17 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
18 |
* MA 02111-1307 USA * |
19 |
***************************************************************************/ |
20 |
|
21 |
#ifndef __LS_MIDIINSTRUMENTMAPPER_H__ |
22 |
#define __LS_MIDIINSTRUMENTMAPPER_H__ |
23 |
|
24 |
#include <map> |
25 |
|
26 |
#include "midi.h" |
27 |
#include "../../EventListeners.h" |
28 |
#include "../../common/global.h" |
29 |
#include "../../common/optional.h" |
30 |
#include "../../engines/InstrumentManager.h" |
31 |
|
32 |
namespace LinuxSampler { |
33 |
|
34 |
// just symbol prototyping |
35 |
class MidiInputPort; |
36 |
|
37 |
/** @brief Mapping MIDI bank/program numbers with real instruments. |
38 |
* |
39 |
* By default (that is on startup) the sampler will simply ignore all |
40 |
* MIDI program change messages. The MidiInstrumentMapper allows to map |
41 |
* arbitrary (MIDI bank MSB, MIDI bank LSB, MIDI program) triples with |
42 |
* an actual (Sampler Engine, Instrument File, Index) triple, so the |
43 |
* sampler knows which instrument to load on the respective MIDI program |
44 |
* change messages. |
45 |
* |
46 |
* The sampler allows to manage arbitrary amount of MIDI instrument |
47 |
* maps. For example you might create (at least) two MIDI instrument |
48 |
* maps: one for "normal" instruments and one for drumkits. |
49 |
*/ |
50 |
class MidiInstrumentMapper { |
51 |
public: |
52 |
/** |
53 |
* Defines the life-time strategy for an instrument. |
54 |
*/ |
55 |
enum mode_t { |
56 |
ON_DEMAND = 0, ///< Instrument will be loaded when needed, freed once not needed anymore. |
57 |
ON_DEMAND_HOLD = 1, ///< Instrument will be loaded when needed and kept even if not needed anymore. |
58 |
PERSISTENT = 2, ///< Instrument will immediately be loaded and kept all the time. |
59 |
VOID = 127 ///< Don't care, let it up to the InstrumentManager to decide for an appropriate LoadMode. |
60 |
}; |
61 |
|
62 |
/** |
63 |
* Defines the instrument and settings a MIDI bank MSB, LSB, |
64 |
* program triple ought to be mapped to. |
65 |
*/ |
66 |
struct entry_t { |
67 |
String EngineName; ///< The sampler engine to be used. |
68 |
String InstrumentFile; ///< File name of the instrument to be loaded. |
69 |
uint InstrumentIndex; ///< Index of the instrument within its file. |
70 |
mode_t LoadMode; ///< Life-time strategy of instrument. |
71 |
float Volume; ///< Global volume factor for this instrument. |
72 |
String Name; ///< Display name that should be associated with this mapping entry. |
73 |
}; |
74 |
|
75 |
/** |
76 |
* Registers the specified listener to be notified when the number |
77 |
* of MIDI instruments on a particular MIDI instrument map is changed. |
78 |
*/ |
79 |
static void AddMidiInstrumentCountListener(MidiInstrumentCountListener* l); |
80 |
|
81 |
/** |
82 |
* Removes the specified listener. |
83 |
*/ |
84 |
static void RemoveMidiInstrumentCountListener(MidiInstrumentCountListener* l); |
85 |
|
86 |
/** |
87 |
* Registers the specified listener to be notified when |
88 |
* a MIDI instrument in a MIDI instrument map is changed. |
89 |
*/ |
90 |
static void AddMidiInstrumentInfoListener(MidiInstrumentInfoListener* l); |
91 |
|
92 |
/** |
93 |
* Removes the specified listener. |
94 |
*/ |
95 |
static void RemoveMidiInstrumentInfoListener(MidiInstrumentInfoListener* l); |
96 |
|
97 |
/** |
98 |
* Registers the specified listener to be notified |
99 |
* when the number of MIDI instrument maps is changed. |
100 |
*/ |
101 |
static void AddMidiInstrumentMapCountListener(MidiInstrumentMapCountListener* l); |
102 |
|
103 |
/** |
104 |
* Removes the specified listener. |
105 |
*/ |
106 |
static void RemoveMidiInstrumentMapCountListener(MidiInstrumentMapCountListener* l); |
107 |
|
108 |
/** |
109 |
* Registers the specified listener to be notified when |
110 |
* the settings of a MIDI instrument map are changed. |
111 |
*/ |
112 |
static void AddMidiInstrumentMapInfoListener(MidiInstrumentMapInfoListener* l); |
113 |
|
114 |
/** |
115 |
* Removes the specified listener. |
116 |
*/ |
117 |
static void RemoveMidiInstrumentMapInfoListener(MidiInstrumentMapInfoListener* l); |
118 |
|
119 |
/** |
120 |
* Adds a new entry to the given MIDI instrument map in case |
121 |
* an entry with \a Index does not exist yet, otherwise it will |
122 |
* replace the existing entry. Note that some given settings |
123 |
* might simply be ignored or might change the settings of other |
124 |
* entries in the map (i.e. because another instrument in the |
125 |
* map is part of the same file and the respective sampler |
126 |
* engine does not allow to use different LoadModes for |
127 |
* instruments of the same file). Note that in case of a |
128 |
* PERSISTENT LoadMode argument the given instrument will |
129 |
* immediately be loaded, that means by default this method will |
130 |
* block until the whole instrument was loaded completely. You |
131 |
* can override this behavior by setting \a bInBackground to |
132 |
* true, so the instrument will be loaded in a separate thread |
133 |
* (in that case you won't catch loading errors though, i.e. if |
134 |
* the file does not exist or might be corrupt for example). |
135 |
* |
136 |
* @param Map - map index |
137 |
* @param Index - unique index of the new entry to add |
138 |
* @param Entry - the actual instrument and settings |
139 |
* @param bInBackground - avoid this method to block for long time |
140 |
* @throws Exception - if the given map or engine type does not |
141 |
* exist or instrument loading failed |
142 |
*/ |
143 |
static void AddOrReplaceEntry(int Map, midi_prog_index_t Index, entry_t Entry, bool bInBackground = false) throw (Exception); |
144 |
|
145 |
/** |
146 |
* Remove an existing entry from the MIDI instrument map. |
147 |
* |
148 |
* @param Map - map index |
149 |
* @param Index - index of entry to delete |
150 |
*/ |
151 |
static void RemoveEntry(int Map, midi_prog_index_t Index); |
152 |
|
153 |
/** |
154 |
* Clear the whole given MIDI instrument map, that is delete all |
155 |
* its entries. |
156 |
* |
157 |
* @param Map - map index |
158 |
*/ |
159 |
static void RemoveAllEntries(int Map); |
160 |
|
161 |
/** |
162 |
* Returns the currently existing MIDI instrument map entries |
163 |
* of the given map with their current settings. |
164 |
* |
165 |
* @param Map - map index |
166 |
* @throws Exception - in case \a Map does not exist |
167 |
*/ |
168 |
static std::map<midi_prog_index_t,entry_t> Entries(int Map) throw (Exception); |
169 |
|
170 |
/** |
171 |
* Returns the IDs of all currently existing MIDI instrument |
172 |
* maps. |
173 |
*/ |
174 |
static std::vector<int> Maps(); |
175 |
|
176 |
/** |
177 |
* Create a new MIDI instrument map. Optionally you can assign |
178 |
* a custom name for the map. Map names don't have to be unique. |
179 |
* |
180 |
* @param MapName - (optional) name for the map |
181 |
* @returns ID of the new map |
182 |
* @throws Exception - if there's no free map ID left |
183 |
*/ |
184 |
static int AddMap(String MapName = "") throw (Exception) ; |
185 |
|
186 |
/** |
187 |
* Returns the custom name of the given map. |
188 |
* |
189 |
* @param Map - map index |
190 |
* @throws Exception - if given map does not exist |
191 |
*/ |
192 |
static String MapName(int Map) throw (Exception); |
193 |
|
194 |
/** |
195 |
* Rename the given, already existing map. Map names don't have |
196 |
* to be unique. |
197 |
* |
198 |
* @param Map - map index |
199 |
* @param NewName - the map's new name to be assigned |
200 |
* @throws Exception - if the given map does not exist |
201 |
*/ |
202 |
static void RenameMap(int Map, String NewName) throw (Exception); |
203 |
|
204 |
/** |
205 |
* Delete the given map. |
206 |
* |
207 |
* @param Map - ID of the map to delete |
208 |
*/ |
209 |
static void RemoveMap(int Map); |
210 |
|
211 |
/** |
212 |
* Completely delete all existing maps. |
213 |
*/ |
214 |
static void RemoveAllMaps(); |
215 |
|
216 |
static int GetMapCount(); |
217 |
|
218 |
/** |
219 |
* Gets the ID of the default map. |
220 |
* For now, the default map is the first available map. When |
221 |
* the default map is removed, the default map becomes the next available map. |
222 |
* @return The ID of the default map or -1 if the there are no maps added. |
223 |
*/ |
224 |
static int GetDefaultMap(); |
225 |
|
226 |
/** |
227 |
* Sets the default map. |
228 |
* @param MapId The ID of the new default map. |
229 |
*/ |
230 |
static void SetDefaultMap(int MapId); |
231 |
|
232 |
protected: |
233 |
/** |
234 |
* Notifies listeners that the number of MIDI instruments |
235 |
* on the specified MIDI instrument map has been changed. |
236 |
* @param MapId The numerical ID of the MIDI instrument map. |
237 |
* @param NewCount The new number of MIDI instruments. |
238 |
*/ |
239 |
static void fireMidiInstrumentCountChanged(int MapId, int NewCount); |
240 |
|
241 |
/** |
242 |
* Notifies listeners that a MIDI instrument |
243 |
* in a MIDI instrument map is changed. |
244 |
* @param MapId The numerical ID of the MIDI instrument map. |
245 |
* @param Bank The index of the MIDI bank, containing the instrument. |
246 |
* @param Program The MIDI program number of the instrument. |
247 |
*/ |
248 |
static void fireMidiInstrumentInfoChanged(int MapId, int Bank, int Program); |
249 |
|
250 |
/** |
251 |
* Notifies listeners that the number of MIDI instrument maps has been changed. |
252 |
* @param NewCount The new number of MIDI instrument maps. |
253 |
*/ |
254 |
static void fireMidiInstrumentMapCountChanged(int NewCount); |
255 |
|
256 |
/** |
257 |
* Notifies listeners that the settings of a MIDI instrument map are changed. |
258 |
*/ |
259 |
static void fireMidiInstrumentMapInfoChanged(int MapId); |
260 |
|
261 |
static optional<entry_t> GetEntry(int Map, midi_prog_index_t Index); // shall only be used by MidiInputPort ATM (see source comment) |
262 |
friend class MidiInputPort; // allow MidiInputPort to access GetEntry() |
263 |
|
264 |
private: |
265 |
static ListenerList<MidiInstrumentCountListener*> llMidiInstrumentCountListeners; |
266 |
static ListenerList<MidiInstrumentInfoListener*> llMidiInstrumentInfoListeners; |
267 |
static ListenerList<MidiInstrumentMapCountListener*> llMidiInstrumentMapCountListeners; |
268 |
static ListenerList<MidiInstrumentMapInfoListener*> llMidiInstrumentMapInfoListeners; |
269 |
|
270 |
static int DefaultMap; |
271 |
}; |
272 |
|
273 |
} // namespace LinuxSampler |
274 |
|
275 |
#endif // __LS_MIDIINSTRUMENTMAPPER_H__ |