/[svn]/linuxsampler/trunk/src/network/lscpserver.h
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revision 35 by schoenebeck, Fri Mar 5 13:46:15 2004 UTC revision 475 by schoenebeck, Thu Mar 17 23:56:56 2005 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck         *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 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 26  Line 27 
27  #include <unistd.h>  #include <unistd.h>
28  #include <sys/types.h>  #include <sys/types.h>
29  #include <sys/socket.h>  #include <sys/socket.h>
30    #include <sys/select.h>
31    #include <sys/time.h>
32  #include <netinet/in.h>  #include <netinet/in.h>
33  #include <netinet/tcp.h>  #include <netinet/tcp.h>
34  #include <arpa/inet.h>  #include <arpa/inet.h>
35  #include <netdb.h>  #include <netdb.h>
36    
37    #include <list>
38    
39    #include "lscp.h"
40  #include "lscpparser.h"  #include "lscpparser.h"
41  #include "../thread.h"  #include "lscp.h"
42  #include "../audiothread.h"  #include "lscpevent.h"
43    #include "lscpinstrumentloader.h"
44    #include "../Sampler.h"
45    #include "../common/Thread.h"
46    #include "../common/Mutex.h"
47    #include "../common/Condition.h"
48    
49  /// TCP Port on which the server should listen for connection requests.  /// TCP Port on which the server should listen for connection requests.
50  #define LSCP_PORT 8888  #define LSCP_PORT 8888
51    
52  /// 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).  /// try up to 3 minutes to bind server socket
53  extern int hSession;  #define LSCP_SERVER_BIND_TIMEOUT 180
54    
55    using namespace LinuxSampler;
56    
57  // External references to the main scanner and parser functions  // External references to the main scanner and parser functions
58  extern int yyparse(void* YYPARSE_PARAM);  extern int yyparse(void* YYPARSE_PARAM);
59  extern int yylex_init(yyscan_t* scanner);  extern void restart(yyparse_param_t* pparam, int& yychar);
 extern int yylex_destroy(yyscan_t yyscanner);  
60    
61  /**  /**
62   * Network server for the LinuxSampler Control Protocol (LSCP).   * Network server for the LinuxSampler Control Protocol (LSCP).
63   */   */
64  class LSCPServer : public Thread {  class LSCPServer : public Thread {
65      public:      public:
66          LSCPServer(AudioThread* pEngine);          LSCPServer(Sampler* pSampler);
67            virtual ~LSCPServer();
68            int WaitUntilInitialized(long TimeoutSeconds = 0L, long TimeoutNanoSeconds = 0L);
69    
70          // Methods called by the parser          // Methods called by the parser
71          String LoadInstrument(String Filename, uint Instrument, uint SamplerChannel);          String DestroyAudioOutputDevice(uint DeviceIndex);
72          String LoadEngine(String EngineName, uint SamplerChannel);          String DestroyMidiInputDevice(uint DeviceIndex);
73            String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground = false);
74            String SetEngineType(String EngineName, uint uiSamplerChannel);
75          String GetChannels();          String GetChannels();
76            String ListChannels();
77          String AddChannel();          String AddChannel();
78          String RemoveChannel(uint SamplerChannel);          String RemoveChannel(uint uiSamplerChannel);
79          String GetAvailableEngines();          String GetAvailableEngines();
80          String GetEngineInfo(String EngineName);          String GetEngineInfo(String EngineName);
81          String GetChannelInfo(uint SamplerChannel);          String GetChannelInfo(uint uiSamplerChannel);
82          String GetVoiceCount(uint SamplerChannel);          String GetVoiceCount(uint uiSamplerChannel);
83          String GetStreamCount(uint SamplerChannel);          String GetStreamCount(uint uiSamplerChannel);
84          String GetBufferFill(fill_response_t ResponseType, uint SamplerChannel);          String GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel);
85          String SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel);          String GetAvailableAudioOutputDrivers();
86          String SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel);          String GetAvailableMidiInputDrivers();
87          String SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel);          String GetAudioOutputDriverInfo(String Driver);
88          String SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel);          String GetMidiInputDriverInfo(String Driver);
89          String SetVolume(double Volume, uint SamplerChannel);  #ifdef __GNUC__
90          String ResetChannel(uint SamplerChannel);          typedef std::map<String,String> StringMap; // nasty workaround for a GCC bug (see GCC bug #15980, #57)
91          String SubscribeNotification(uint UDPPort);          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
92          String UnsubscribeNotification(String SessionID);          String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
93            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = StringMap());
94            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = StringMap());
95    #else
96            String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());
97            String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());
98            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
99            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
100    #endif // __GNUC__
101            String GetAudioOutputDeviceCount();
102            String GetMidiInputDeviceCount();
103            String GetAudioOutputDevices();
104            String GetMidiInputDevices();
105            String GetAudioOutputDeviceInfo(uint DeviceIndex);
106            String GetMidiInputDeviceInfo(uint DeviceIndex);
107            String GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex);
108            String GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName);
109            String GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId);
110            String GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName);
111            String SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal);
112            String SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
113            String SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
114            String SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal);
115            String SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel);
116            String SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel);
117            String SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel);
118            String SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel);
119            String SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel);
120            String SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel);
121            String SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel);
122            String SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel);
123            String SetVolume(double dVolume, uint uiSamplerChannel);
124            String ResetChannel(uint uiSamplerChannel);
125            String ResetSampler();
126            String SubscribeNotification(LSCPEvent::event_t);
127            String UnsubscribeNotification(LSCPEvent::event_t);
128            String QueryDatabase(String query);
129            String SetEcho(yyparse_param_t* pSession, double boolean_value);
130          void   AnswerClient(String ReturnMessage);          void   AnswerClient(String ReturnMessage);
131    
132            static int currentSocket;
133            static std::map<int,String> bufferedCommands;
134    
135            static void SendLSCPNotify( LSCPEvent Event );
136            static int EventSubscribers( std::list<LSCPEvent::event_t> events );
137            static void LockRTNotify( void ) { RTNotifyMutex.Lock(); }
138            static void UnlockRTNotify( void ) { RTNotifyMutex.Unlock(); }
139    
140      protected:      protected:
141          int          hSocket;          int            hSocket;
142          sockaddr_in  SocketAddress;          sockaddr_in    SocketAddress;
143          AudioThread* pEngine; // FIXME: as long as we only have one engine...          Sampler*       pSampler;
144            Condition      Initialized;
145            LSCPInstrumentLoader InstrumentLoader; ///< thread responsible for loading instruments in the background
146    
147          int Main(); ///< Implementation of virtual method from class Thread          int Main(); ///< Implementation of virtual method from class Thread
148    
149      private:      private:
150    
151          /**          /**
152           * Converts a result_t structure into a valid LSCP answer message.           * Find a created audio output device index.
153           */           */
154          inline String ConvertResult(result_t result) {          int GetAudioOutputDeviceIndex (AudioOutputDevice *pDevice);
155              switch (result.type) {  
156                  case result_type_success: {          /**
157                      return "OK\r\n";           * Find a created midi input device index.
158                  }           */
159                  case result_type_warning: {          int GetMidiInputDeviceIndex (MidiInputDevice *pDevice);
160                      std::stringstream ss;  
161                      ss << "WRN:" << result.code << ":" << result.message << "\r\n";          static std::map<int,String> bufferedNotifies;
162                      return ss.str();          static Mutex NotifyMutex;
163                  }          static Mutex NotifyBufferMutex;
164                  case result_type_error: {          static bool GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter );
165                      std::stringstream ss;          static void CloseConnection( std::vector<yyparse_param_t>::iterator iter );
166                      ss << "ERR:" << result.code << ":" << result.message << "\r\n";          static std::vector<yyparse_param_t> Sessions;
167                      return ss.str();          static Mutex SubscriptionMutex;
168                  }          static std::map< LSCPEvent::event_t, std::list<int> > eventSubscriptions;
169              }          static fd_set fdSet;
170          }  
171            //Protect main thread that generates real time notify messages
172          inline String ToString(int i) {          //like voice count, stream count and buffer fill
173              std::stringstream ss;          //from LSCP server removing engines and channels from underneath
174              ss << i;          static Mutex RTNotifyMutex;
             return ss.str();  
         }  
   
         inline String ToString(double d) {  
             std::stringstream ss;  
             ss << d;  
             return ss.str();  
         }  
175  };  };
176    
177  #endif // __LSCPSERVER_H_  #endif // __LSCPSERVER_H_
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