/[svn]/linuxsampler/trunk/src/network/lscpserver.h
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revision 123 by schoenebeck, Mon Jun 14 19:33:16 2004 UTC revision 1848 by iliev, Sat Feb 28 21:23:06 2009 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   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     *   *   the Free Software Foundation; either version 2 of the License, or     *
11   *   (at your option) any later version.                                   *   *   (at your option) any later version.                                   *
12   *                                                                         *   *                                                                         *
13   *   This program is distributed in the hope that it will be useful,       *   *   This library is distributed in the hope that it will be useful,       *
14   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
15   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
16   *   GNU General Public License for more details.                          *   *   GNU General Public License for more details.                          *
17   *                                                                         *   *                                                                         *
18   *   You should have received a copy of the GNU General Public License     *   *   You should have received a copy of the GNU General Public License     *
19   *   along with this program; if not, write to the Free Software           *   *   along with this library; if not, write to the Free Software           *
20   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
# Line 23  Line 24 
24  #ifndef __LSCPSERVER_H_  #ifndef __LSCPSERVER_H_
25  #define __LSCPSERVER_H_  #define __LSCPSERVER_H_
26    
27    #if defined(WIN32)
28    #include <windows.h>
29    typedef int socklen_t;
30    #else
31  #include <unistd.h>  #include <unistd.h>
32  #include <sys/types.h>  #include <sys/types.h>
33  #include <sys/socket.h>  #include <sys/socket.h>
34    #include <sys/select.h>
35    #include <sys/time.h>
36  #include <netinet/in.h>  #include <netinet/in.h>
37  #include <netinet/tcp.h>  #include <netinet/tcp.h>
38  #include <arpa/inet.h>  #include <arpa/inet.h>
39  #include <netdb.h>  #include <netdb.h>
40    #endif
41    
42    #include <list>
43    
44  #include "lscp.h"  #include "lscp.h"
45  #include "lscpparser.h"  #include "lscpparser.h"
46    #include "lscpevent.h"
47  #include "../Sampler.h"  #include "../Sampler.h"
48  #include "../common/Thread.h"  #include "../common/Thread.h"
49    #include "../common/Mutex.h"
50    #include "../common/Condition.h"
51    #include "../common/global_private.h"
52    
53    #include "../drivers/midi/MidiInstrumentMapper.h"
54    #include "../drivers/midi/VirtualMidiDevice.h"
55    
56    #if HAVE_SQLITE3
57    #include "../db/InstrumentsDb.h"
58    #endif
59    
60  /// TCP Port on which the server should listen for connection requests.  /// TCP Port on which the server should listen for connection requests.
61    #define LSCP_ADDR INADDR_ANY
62  #define LSCP_PORT 8888  #define LSCP_PORT 8888
63    
64  using namespace LinuxSampler;  /// try up to 3 minutes to bind server socket
65    #define LSCP_SERVER_BIND_TIMEOUT 180
 /// Handle for a client connection (FIXME: doesn't work for more than one network connections of course, thus has to be included to the yyparse() parameters instead).  
 extern int hSession;  
66    
67  // External references to the main scanner and parser functions  // External references to the main scanner and parser functions
68  extern int yyparse(void* YYPARSE_PARAM);  extern int yyparse(void* YYPARSE_PARAM);
69  extern int yylex_init(yyscan_t* scanner);  
70  extern int yylex_destroy(yyscan_t yyscanner);  namespace LinuxSampler {
71    
72    extern void restart(yyparse_param_t* pparam, int& yychar);
73    
74  /**  /**
75   * Network server for the LinuxSampler Control Protocol (LSCP).   * Network server for the LinuxSampler Control Protocol (LSCP).
76   */   */
77  class LSCPServer : public Thread {  class LSCPServer : public Thread {
78      public:      public:
79          LSCPServer(Sampler* pSampler);          LSCPServer(Sampler* pSampler, long int addr, short int port);
80            virtual ~LSCPServer();
81            int WaitUntilInitialized(long TimeoutSeconds = 0L, long TimeoutNanoSeconds = 0L);
82            void RemoveListeners();
83    
84          // Methods called by the parser          // Methods called by the parser
         String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters);  
85          String DestroyAudioOutputDevice(uint DeviceIndex);          String DestroyAudioOutputDevice(uint DeviceIndex);
86          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel);          String DestroyMidiInputDevice(uint DeviceIndex);
87          String LoadEngine(String EngineName, uint uiSamplerChannel);          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground = false);
88            String SetEngineType(String EngineName, uint uiSamplerChannel);
89          String GetChannels();          String GetChannels();
90            String ListChannels();
91          String AddChannel();          String AddChannel();
92          String RemoveChannel(uint uiSamplerChannel);          String RemoveChannel(uint uiSamplerChannel);
93          String GetAvailableEngines();          String GetAvailableEngines();
94            String ListAvailableEngines();
95          String GetEngineInfo(String EngineName);          String GetEngineInfo(String EngineName);
96          String GetChannelInfo(uint uiSamplerChannel);          String GetChannelInfo(uint uiSamplerChannel);
97          String GetVoiceCount(uint uiSamplerChannel);          String GetVoiceCount(uint uiSamplerChannel);
98          String GetStreamCount(uint uiSamplerChannel);          String GetStreamCount(uint uiSamplerChannel);
99          String GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel);          String GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel);
100          String GetAvailableAudioOutputDrivers();          String GetAvailableAudioOutputDrivers();
101            String ListAvailableAudioOutputDrivers();
102            String GetAvailableMidiInputDrivers();
103            String ListAvailableMidiInputDrivers();
104          String GetAudioOutputDriverInfo(String Driver);          String GetAudioOutputDriverInfo(String Driver);
105            String GetMidiInputDriverInfo(String Driver);
106  #ifdef __GNUC__  #ifdef __GNUC__
107          typedef std::map<String,String> StringMap; // nasty workaround for a GCC bug (see GCC bug #15980, #57)          typedef std::map<String,String> StringMap; // nasty workaround for a GCC bug (see GCC bug #15980, #57)
108          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
109            String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
110            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = StringMap());
111            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = StringMap());
112  #else  #else
113          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());
114            String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());
115            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
116            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
117  #endif // __GNUC__  #endif // __GNUC__
118          String GetAudioOutputDeviceCount();          String GetAudioOutputDeviceCount();
119            String GetMidiInputDeviceCount();
120          String GetAudioOutputDevices();          String GetAudioOutputDevices();
121            String GetMidiInputDevices();
122          String GetAudioOutputDeviceInfo(uint DeviceIndex);          String GetAudioOutputDeviceInfo(uint DeviceIndex);
123            String GetMidiInputDeviceInfo(uint DeviceIndex);
124            String GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex);
125            String GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName);
126          String GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId);          String GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId);
127          String GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName);          String GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName);
128          String SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal);          String SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal);
129          String SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);          String SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
130            String SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
131            String SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal);
132          String SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel);          String SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel);
         String SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel);  
         String SetMIDIInputPort(String MIDIInputPort, uint uiSamplerchannel);  
         String SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel);  
133          String SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel);          String SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel);
134          String SetVolume(double Volume, uint uiSamplerChannel);          String SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel);
135            String SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel);
136            String SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel);
137            String SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel);
138            String SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel);
139            String SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel);
140            String SetVolume(double dVolume, uint uiSamplerChannel);
141            String SetChannelMute(bool bMute, uint uiSamplerChannel);
142            String SetChannelSolo(bool bSolo, uint uiSamplerChannel);
143            String AddOrReplaceMIDIInstrumentMapping(uint MidiMapID, uint MidiBank, uint MidiProg, String EngineType, String InstrumentFile, uint InstrumentIndex, float Volume, MidiInstrumentMapper::mode_t LoadMode, String Name, bool bModal);
144            String RemoveMIDIInstrumentMapping(uint MidiMapID, uint MidiBank, uint MidiProg);
145            String GetMidiInstrumentMappings(uint MidiMapID);
146            String GetAllMidiInstrumentMappings();
147            String GetMidiInstrumentMapping(uint MidiMapID, uint MidiBank, uint MidiProg);
148            String ListMidiInstrumentMappings(uint MidiMapID);
149            String ListAllMidiInstrumentMappings();
150            String ClearMidiInstrumentMappings(uint MidiMapID);
151            String ClearAllMidiInstrumentMappings();
152            String AddMidiInstrumentMap(String MapName = "");
153            String RemoveMidiInstrumentMap(uint MidiMapID);
154            String RemoveAllMidiInstrumentMaps();
155            String GetMidiInstrumentMaps();
156            String ListMidiInstrumentMaps();
157            String GetMidiInstrumentMap(uint MidiMapID);
158            String SetMidiInstrumentMapName(uint MidiMapID, String NewName);
159            String SetChannelMap(uint uiSamplerChannel, int MidiMapID);
160            String CreateFxSend(uint uiSamplerChannel, uint MidiCtrl, String Name = "");
161            String DestroyFxSend(uint uiSamplerChannel, uint FxSendID);
162            String GetFxSends(uint uiSamplerChannel);
163            String ListFxSends(uint uiSamplerChannel);
164            String GetFxSendInfo(uint uiSamplerChannel, uint FxSendID);
165            String SetFxSendName(uint uiSamplerChannel, uint FxSendID, String Name);
166            String SetFxSendAudioOutputChannel(uint uiSamplerChannel, uint FxSendID, uint FxSendChannel, uint DeviceChannel);
167            String SetFxSendMidiController(uint uiSamplerChannel, uint FxSendID, uint MidiController);
168            String SetFxSendLevel(uint uiSamplerChannel, uint FxSendID, double dLevel);
169            String AddDbInstrumentDirectory(String Dir);
170            String RemoveDbInstrumentDirectory(String Dir, bool Force = false);
171            String GetDbInstrumentDirectoryCount(String Dir, bool Recursive = false);
172            String GetDbInstrumentDirectories(String Dir, bool Recursive = false);
173            String GetDbInstrumentDirectoryInfo(String Dir);
174            String SetDbInstrumentDirectoryName(String Dir, String Name);
175            String MoveDbInstrumentDirectory(String Dir, String Dst);
176            String CopyDbInstrumentDirectory(String Dir, String Dst);
177            String SetDbInstrumentDirectoryDescription(String Dir, String Desc);
178            String FindDbInstrumentDirectories(String Dir, std::map<String,String> Parameters, bool Recursive = true);
179            String AddDbInstruments(String DbDir, String FilePath, int Index = -1, bool bBackground = false);
180            String AddDbInstruments(String ScanMode, String DbDir, String FsDir, bool bBackground = false, bool insDir = false);
181            String RemoveDbInstrument(String Instr);
182            String GetDbInstrumentCount(String Dir, bool Recursive = false);
183            String GetDbInstruments(String Dir, bool Recursive = false);
184            String GetDbInstrumentInfo(String Instr);
185            String SetDbInstrumentName(String Instr, String Name);
186            String MoveDbInstrument(String Instr, String Dst);
187            String CopyDbInstrument(String Instr, String Dst);
188            String SetDbInstrumentDescription(String Instr, String Desc);
189            String SetDbInstrumentFilePath(String OldPath, String NewPath);
190            String FindLostDbInstrumentFiles();
191            String FindDbInstruments(String Dir, std::map<String,String> Parameters, bool Recursive = true);
192            String FormatInstrumentsDb();
193            String EditSamplerChannelInstrument(uint uiSamplerChannel);
194            String GetDbInstrumentsJobInfo(int JobId);
195          String ResetChannel(uint uiSamplerChannel);          String ResetChannel(uint uiSamplerChannel);
196          String SubscribeNotification(uint UDPPort);          String ResetSampler();
197          String UnsubscribeNotification(String SessionID);          String GetServerInfo();
198            String GetTotalStreamCount();
199            String GetTotalVoiceCount();
200            String GetTotalVoiceCountMax();
201            String GetGlobalMaxVoices();
202            String SetGlobalMaxVoices(int iVoices);
203            String GetGlobalMaxStreams();
204            String SetGlobalMaxStreams(int iStreams);
205            String GetGlobalVolume();
206            String SetGlobalVolume(double dVolume);
207            String GetFileInstruments(String Filename);
208            String ListFileInstruments(String Filename);
209            String GetFileInstrumentInfo(String Filename, uint InstrumentID);
210            String SendChannelMidiData(String MidiMsg, uint uiSamplerChannel, uint Arg1, uint Arg2);
211            String SubscribeNotification(LSCPEvent::event_t);
212            String UnsubscribeNotification(LSCPEvent::event_t);
213            String SetEcho(yyparse_param_t* pSession, double boolean_value);
214          void   AnswerClient(String ReturnMessage);          void   AnswerClient(String ReturnMessage);
215            void   CloseAllConnections();
216    
217            static int currentSocket;
218            static std::map<int,String> bufferedCommands;
219    
220            static void SendLSCPNotify( LSCPEvent Event );
221            static int EventSubscribers( std::list<LSCPEvent::event_t> events );
222        static void LockRTNotify();
223        static void UnlockRTNotify();
224        static String FilterEndlines(String s);
225    
226      protected:      protected:
227          int            hSocket;          int            hSocket;
228          sockaddr_in    SocketAddress;          sockaddr_in    SocketAddress;
229          Sampler*       pSampler;          Sampler*       pSampler;
230            Condition      Initialized;
231    
232          int Main(); ///< Implementation of virtual method from class Thread          int Main(); ///< Implementation of virtual method from class Thread
233    
234      private:      private:
235    
236            /**
237             * Find a created audio output device index.
238             */
239            int GetAudioOutputDeviceIndex (AudioOutputDevice *pDevice);
240    
241            /**
242             * Find a created midi input device index.
243             */
244            int GetMidiInputDeviceIndex (MidiInputDevice *pDevice);
245    
246            EngineChannel* GetEngineChannel(uint uiSamplerChannel);
247    
248                    /**
249                     * Gets the specified effect send on the specified sampler channel.
250                     */
251                    FxSend* GetFxSend(uint uiSamplerChannel, uint FxSendID);
252    
253            bool HasSoloChannel();
254            void MuteNonSoloChannels();
255            void UnmuteChannels();
256    
257          /**          /**
258           * Converts a result_t structure into a valid LSCP answer message.           * Throws an exception if the specified file is not found or
259             * if directory is specified.
260           */           */
261          inline String ConvertResult(result_t result) {          static void VerifyFile(String Filename);
262              switch (result.type) {  
263                  case result_type_success: {          static std::map<int,String> bufferedNotifies;
264                      return "OK\r\n";          static Mutex NotifyMutex;
265                  }          static Mutex NotifyBufferMutex;
266                  case result_type_warning: {          static bool GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter );
267                      std::stringstream ss;          static void CloseConnection( std::vector<yyparse_param_t>::iterator iter );
268                      ss << "WRN:" << result.code << ":" << result.message << "\r\n";          static std::vector<yyparse_param_t> Sessions;
269                      return ss.str();          static Mutex SubscriptionMutex;
270                  }          static std::map< LSCPEvent::event_t, std::list<int> > eventSubscriptions;
271                  case result_type_error: {          static fd_set fdSet;
272                      std::stringstream ss;  
273                      ss << "ERR:" << result.code << ":" << result.message << "\r\n";          //Protect main thread that generates real time notify messages
274                      return ss.str();          //like voice count, stream count and buffer fill
275                  }          //from LSCP server removing engines and channels from underneath
276              }          static Mutex RTNotifyMutex;
277          }  
278            class EventHandler : public ChannelCountListener, public AudioDeviceCountListener,
279          template<class T> inline String ToString(T o) {              public MidiDeviceCountListener, public MidiInstrumentCountListener,
280              std::stringstream ss;              public MidiInstrumentInfoListener, public MidiInstrumentMapCountListener,
281              ss << o;              public MidiInstrumentMapInfoListener, public FxSendCountListener,
282              return ss.str();              public VoiceCountListener, public StreamCountListener, public BufferFillListener,
283          }              public TotalStreamCountListener, public TotalVoiceCountListener,
284                public EngineChangeListener, public MidiPortCountListener {
285    
286                public:
287                    EventHandler(LSCPServer* pParent);
288    
289                    /**
290                     * Invoked when the number of sampler channels has changed.
291                     * @param NewCount The new number of sampler channels.
292                     */
293                    virtual void ChannelCountChanged(int NewCount);
294                    virtual void ChannelAdded(SamplerChannel* pChannel);
295                    virtual void ChannelToBeRemoved(SamplerChannel* pChannel);
296    
297                    /**
298                     * Invoked when the number of audio output devices has changed.
299                     * @param NewCount The new number of audio output devices.
300                     */
301                    virtual void AudioDeviceCountChanged(int NewCount);
302    
303                    /**
304                     * Invoked when the number of MIDI input devices has changed.
305                     * @param NewCount The new number of MIDI input devices.
306                     */
307                    virtual void MidiDeviceCountChanged(int NewCount);
308    
309                    /**
310                     * Invoked right before the supplied MIDI input device is going
311                     * to be destroyed.
312                     * @param pDevice MidiInputDevice to be deleted
313                     */
314                    virtual void MidiDeviceToBeDestroyed(MidiInputDevice* pDevice);
315    
316                    /**
317                     * Invoked to inform that a new MidiInputDevice has just been
318                     * created.
319                     * @param pDevice newly created MidiInputDevice
320                     */
321                    virtual void MidiDeviceCreated(MidiInputDevice* pDevice);
322    
323                    /**
324                     * Invoked when the number of MIDI input ports has changed.
325                     * @param NewCount The new number of MIDI input ports.
326                     */
327                    virtual void MidiPortCountChanged(int NewCount);
328    
329                    /**
330                     * Invoked right before the supplied MIDI input port is going
331                     * to be destroyed.
332                     * @param pPort MidiInputPort to be deleted
333                     */
334                    virtual void MidiPortToBeRemoved(MidiInputPort* pPort);
335    
336                    /**
337                     * Invoked to inform that a new MidiInputPort has just been
338                     * added.
339                     * @param pPort newly created MidiInputPort
340                     */
341                    virtual void MidiPortAdded(MidiInputPort* pPort);
342    
343                    /**
344                     * Invoked when the number of MIDI instruments has changed.
345                     * @param MapId The numerical ID of the MIDI instrument map.
346                     * @param NewCount The new number of MIDI instruments.
347                     */
348                    virtual void MidiInstrumentCountChanged(int MapId, int NewCount);
349    
350                    /**
351                     * Invoked when a MIDI instrument in a MIDI instrument map is changed.
352                     * @param MapId The numerical ID of the MIDI instrument map.
353                     * @param Bank The index of the MIDI bank, containing the instrument.
354                     * @param Program The MIDI program number of the instrument.
355                     */
356                    virtual void MidiInstrumentInfoChanged(int MapId, int Bank, int Program);
357    
358                    /**
359                     * Invoked when the number of MIDI instrument maps has changed.
360                     * @param NewCount The new number of MIDI instruments.
361                     */
362                    virtual void MidiInstrumentMapCountChanged(int NewCount);
363    
364                    /**
365                     * Invoked when the settings of a MIDI instrument map are changed.
366                     * @param MapId The numerical ID of the MIDI instrument map.
367                     */
368                    virtual void MidiInstrumentMapInfoChanged(int MapId);
369    
370                    /**
371                     * Invoked when the number of effect sends
372                     * on the specified sampler channel has changed.
373                     * @param ChannelId The numerical ID of the sampler channel.
374                     * @param NewCount The new number of effect sends.
375                     */
376                    virtual void FxSendCountChanged(int ChannelId, int NewCount);
377    
378                    /**
379                     * Invoked when the number of active voices
380                     * on the specified sampler channel has changed.
381                     * @param ChannelId The numerical ID of the sampler channel.
382                     * @param NewCount The new number of active voices.
383                     */
384                    virtual void VoiceCountChanged(int ChannelId, int NewCount);
385    
386                    /**
387                     * Invoked when the number of active disk streams
388                     * on the specified sampler channel has changed.
389                     * @param ChannelId The numerical ID of the sampler channel.
390                     * @param NewCount The new number of active disk streams.
391                     */
392                    virtual void StreamCountChanged(int ChannelId, int NewCount);
393    
394                    /**
395                     * Invoked when the fill state of the disk stream
396                     * buffers on the specified sampler channel is changed.
397                     * @param ChannelId The numerical ID of the sampler channel.
398                     * @param FillData The buffer fill data for the specified sampler channel.
399                     */
400                    virtual void BufferFillChanged(int ChannelId, String FillData);
401    
402                    /**
403                     * Invoked when the total number of active voices is changed.
404                     * @param NewCount The new number of active voices.
405                     */
406                    virtual void TotalVoiceCountChanged(int NewCount);
407                    virtual void TotalStreamCountChanged(int NewCount);
408    
409                    virtual void EngineToBeChanged(int ChannelId);
410                    virtual void EngineChanged(int ChannelId);
411    
412                    virtual ~EventHandler();
413    
414                    struct midi_listener_entry {
415                        SamplerChannel* pSamplerChannel;
416                        EngineChannel* pEngineChannel;
417                        VirtualMidiDevice* pMidiListener;
418                    };
419    
420                    std::vector<midi_listener_entry> channelMidiListeners;
421    
422                    struct device_midi_listener_entry {
423                        MidiInputPort* pPort;
424                        VirtualMidiDevice* pMidiListener;
425                        uint uiDeviceID;
426                    };
427    
428                    std::vector<device_midi_listener_entry> deviceMidiListeners;
429    
430                private:
431                    LSCPServer* pParent;
432            } eventHandler;
433    
434    #if HAVE_SQLITE3
435            class DbInstrumentsEventHandler : public InstrumentsDb::Listener {
436                public:
437                    virtual void DirectoryCountChanged(String Dir);
438                    virtual void DirectoryInfoChanged(String Dir);
439                    virtual void DirectoryNameChanged(String Dir, String NewName);
440                    virtual void InstrumentCountChanged(String Dir);
441                    virtual void InstrumentInfoChanged(String Instr);
442                    virtual void InstrumentNameChanged(String Instr, String NewName);
443                    virtual void JobStatusChanged(int JobId);
444            } dbInstrumentsEventHandler;
445    #endif // HAVE_SQLITE3
446  };  };
447    
448    }
449    
450  #endif // __LSCPSERVER_H_  #endif // __LSCPSERVER_H_
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