/[svn]/linuxsampler/trunk/src/network/lscpserver.h
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revision 137 by capela, Sun Jun 20 16:49:47 2004 UTC revision 1835 by iliev, Mon Feb 16 17:56:50 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 DestroyMidiInputDevice(uint DeviceIndex);
87          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground = false);          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground = false);
88          String LoadEngine(String EngineName, uint uiSamplerChannel);          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(event_t Event);          String ResetSampler();
197          String UnsubscribeNotification(event_t Event);          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    
216            static int currentSocket;
217            static std::map<int,String> bufferedCommands;
218    
219            static void SendLSCPNotify( LSCPEvent Event );
220            static int EventSubscribers( std::list<LSCPEvent::event_t> events );
221        static void LockRTNotify();
222        static void UnlockRTNotify();
223        static String FilterEndlines(String s);
224    
225      protected:      protected:
226          int            hSocket;          int            hSocket;
227          sockaddr_in    SocketAddress;          sockaddr_in    SocketAddress;
228          Sampler*       pSampler;          Sampler*       pSampler;
229            Condition      Initialized;
230    
231          int Main(); ///< Implementation of virtual method from class Thread          int Main(); ///< Implementation of virtual method from class Thread
232    
233      private:      private:
234    
235          /**          /**
236           * Converts a result_t structure into a valid LSCP answer message.           * Find a created audio output device index.
237           */           */
238          inline String ConvertResult(result_t result) {          int GetAudioOutputDeviceIndex (AudioOutputDevice *pDevice);
             switch (result.type) {  
                 case result_type_success: {  
                     return "OK\r\n";  
                 }  
                 case result_type_warning: {  
                     std::stringstream ss;  
                     ss << "WRN:" << result.code << ":" << result.message << "\r\n";  
                     return ss.str();  
                 }  
                 case result_type_error: {  
                     std::stringstream ss;  
                     ss << "ERR:" << result.code << ":" << result.message << "\r\n";  
                     return ss.str();  
                 }  
             }  
         }  
   
         template<class T> inline String ToString(T o) {  
             std::stringstream ss;  
             ss << o;  
             return ss.str();  
         }  
 };  
239    
240            /**
241             * Find a created midi input device index.
242             */
243            int GetMidiInputDeviceIndex (MidiInputDevice *pDevice);
244    
245  /**          EngineChannel* GetEngineChannel(uint uiSamplerChannel);
  * Instrument loader thread for the LinuxSampler Control Protocol (LSCP).  
  */  
 class LSCPLoadInstrument : public Thread {  
246    
247      public:                  /**
248          LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument);                   * Gets the specified effect send on the specified sampler channel.
249                     */
250                    FxSend* GetFxSend(uint uiSamplerChannel, uint FxSendID);
251    
252            bool HasSoloChannel();
253            void MuteNonSoloChannels();
254            void UnmuteChannels();
255    
256      protected:          /**
257          // Instance variables.           * Throws an exception if the specified file is not found or
258          Engine* pEngine;           * if directory is specified.
259          String  Filename;           */
260          uint    uiInstrument;          static void VerifyFile(String Filename);
261    
262          // Implementation of virtual method from class Thread.          static std::map<int,String> bufferedNotifies;
263          int Main();          static Mutex NotifyMutex;
264            static Mutex NotifyBufferMutex;
265            static bool GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter );
266            static void CloseConnection( std::vector<yyparse_param_t>::iterator iter );
267            static std::vector<yyparse_param_t> Sessions;
268            static Mutex SubscriptionMutex;
269            static std::map< LSCPEvent::event_t, std::list<int> > eventSubscriptions;
270            static fd_set fdSet;
271    
272            //Protect main thread that generates real time notify messages
273            //like voice count, stream count and buffer fill
274            //from LSCP server removing engines and channels from underneath
275            static Mutex RTNotifyMutex;
276    
277            class EventHandler : public ChannelCountListener, public AudioDeviceCountListener,
278                public MidiDeviceCountListener, public MidiInstrumentCountListener,
279                public MidiInstrumentInfoListener, public MidiInstrumentMapCountListener,
280                public MidiInstrumentMapInfoListener, public FxSendCountListener,
281                public VoiceCountListener, public StreamCountListener, public BufferFillListener,
282                public TotalStreamCountListener, public TotalVoiceCountListener,
283                public EngineChangeListener, public MidiPortCountListener {
284    
285                public:
286                    EventHandler(LSCPServer* pParent);
287    
288                    /**
289                     * Invoked when the number of sampler channels has changed.
290                     * @param NewCount The new number of sampler channels.
291                     */
292                    virtual void ChannelCountChanged(int NewCount);
293                    virtual void ChannelAdded(SamplerChannel* pChannel);
294                    virtual void ChannelToBeRemoved(SamplerChannel* pChannel);
295    
296                    /**
297                     * Invoked when the number of audio output devices has changed.
298                     * @param NewCount The new number of audio output devices.
299                     */
300                    virtual void AudioDeviceCountChanged(int NewCount);
301    
302                    /**
303                     * Invoked when the number of MIDI input devices has changed.
304                     * @param NewCount The new number of MIDI input devices.
305                     */
306                    virtual void MidiDeviceCountChanged(int NewCount);
307    
308                    /**
309                     * Invoked right before the supplied MIDI input device is going
310                     * to be destroyed.
311                     * @param pDevice MidiInputDevice to be deleted
312                     */
313                    virtual void MidiDeviceToBeDestroyed(MidiInputDevice* pDevice);
314    
315                    /**
316                     * Invoked to inform that a new MidiInputDevice has just been
317                     * created.
318                     * @param pDevice newly created MidiInputDevice
319                     */
320                    virtual void MidiDeviceCreated(MidiInputDevice* pDevice);
321    
322                    /**
323                     * Invoked when the number of MIDI input ports has changed.
324                     * @param NewCount The new number of MIDI input ports.
325                     */
326                    virtual void MidiPortCountChanged(int NewCount);
327    
328                    /**
329                     * Invoked right before the supplied MIDI input port is going
330                     * to be destroyed.
331                     * @param pPort MidiInputPort to be deleted
332                     */
333                    virtual void MidiPortToBeRemoved(MidiInputPort* pPort);
334    
335                    /**
336                     * Invoked to inform that a new MidiInputPort has just been
337                     * added.
338                     * @param pPort newly created MidiInputPort
339                     */
340                    virtual void MidiPortAdded(MidiInputPort* pPort);
341    
342                    /**
343                     * Invoked when the number of MIDI instruments has changed.
344                     * @param MapId The numerical ID of the MIDI instrument map.
345                     * @param NewCount The new number of MIDI instruments.
346                     */
347                    virtual void MidiInstrumentCountChanged(int MapId, int NewCount);
348    
349                    /**
350                     * Invoked when a MIDI instrument in a MIDI instrument map is changed.
351                     * @param MapId The numerical ID of the MIDI instrument map.
352                     * @param Bank The index of the MIDI bank, containing the instrument.
353                     * @param Program The MIDI program number of the instrument.
354                     */
355                    virtual void MidiInstrumentInfoChanged(int MapId, int Bank, int Program);
356    
357                    /**
358                     * Invoked when the number of MIDI instrument maps has changed.
359                     * @param NewCount The new number of MIDI instruments.
360                     */
361                    virtual void MidiInstrumentMapCountChanged(int NewCount);
362    
363                    /**
364                     * Invoked when the settings of a MIDI instrument map are changed.
365                     * @param MapId The numerical ID of the MIDI instrument map.
366                     */
367                    virtual void MidiInstrumentMapInfoChanged(int MapId);
368    
369                    /**
370                     * Invoked when the number of effect sends
371                     * on the specified sampler channel has changed.
372                     * @param ChannelId The numerical ID of the sampler channel.
373                     * @param NewCount The new number of effect sends.
374                     */
375                    virtual void FxSendCountChanged(int ChannelId, int NewCount);
376    
377                    /**
378                     * Invoked when the number of active voices
379                     * on the specified sampler channel has changed.
380                     * @param ChannelId The numerical ID of the sampler channel.
381                     * @param NewCount The new number of active voices.
382                     */
383                    virtual void VoiceCountChanged(int ChannelId, int NewCount);
384    
385                    /**
386                     * Invoked when the number of active disk streams
387                     * on the specified sampler channel has changed.
388                     * @param ChannelId The numerical ID of the sampler channel.
389                     * @param NewCount The new number of active disk streams.
390                     */
391                    virtual void StreamCountChanged(int ChannelId, int NewCount);
392    
393                    /**
394                     * Invoked when the fill state of the disk stream
395                     * buffers on the specified sampler channel is changed.
396                     * @param ChannelId The numerical ID of the sampler channel.
397                     * @param FillData The buffer fill data for the specified sampler channel.
398                     */
399                    virtual void BufferFillChanged(int ChannelId, String FillData);
400    
401                    /**
402                     * Invoked when the total number of active voices is changed.
403                     * @param NewCount The new number of active voices.
404                     */
405                    virtual void TotalVoiceCountChanged(int NewCount);
406                    virtual void TotalStreamCountChanged(int NewCount);
407    
408                    virtual void EngineToBeChanged(int ChannelId);
409                    virtual void EngineChanged(int ChannelId);
410    
411                    virtual ~EventHandler();
412    
413                    struct midi_listener_entry {
414                        SamplerChannel* pSamplerChannel;
415                        EngineChannel* pEngineChannel;
416                        VirtualMidiDevice* pMidiListener;
417                    };
418    
419                    std::vector<midi_listener_entry> channelMidiListeners;
420    
421                    struct device_midi_listener_entry {
422                        MidiInputPort* pPort;
423                        VirtualMidiDevice* pMidiListener;
424                        uint uiDeviceID;
425                    };
426    
427                    std::vector<device_midi_listener_entry> deviceMidiListeners;
428    
429                private:
430                    LSCPServer* pParent;
431            } eventHandler;
432    
433    #if HAVE_SQLITE3
434            class DbInstrumentsEventHandler : public InstrumentsDb::Listener {
435                public:
436                    virtual void DirectoryCountChanged(String Dir);
437                    virtual void DirectoryInfoChanged(String Dir);
438                    virtual void DirectoryNameChanged(String Dir, String NewName);
439                    virtual void InstrumentCountChanged(String Dir);
440                    virtual void InstrumentInfoChanged(String Instr);
441                    virtual void InstrumentNameChanged(String Instr, String NewName);
442                    virtual void JobStatusChanged(int JobId);
443            } dbInstrumentsEventHandler;
444    #endif // HAVE_SQLITE3
445  };  };
446    
447    }
448    
449  #endif // __LSCPSERVER_H_  #endif // __LSCPSERVER_H_
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