/[svn]/linuxsampler/trunk/src/network/lscpserver.h
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revision 133 by capela, Fri Jun 18 14:29:02 2004 UTC revision 778 by iliev, Fri Sep 23 06:58:26 2005 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 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"  #include "lscp.h"
40  #include "lscpparser.h"  #include "lscpparser.h"
41    #include "lscp.h"
42    #include "lscpevent.h"
43    #include "lscpinstrumentloader.h"
44  #include "../Sampler.h"  #include "../Sampler.h"
45  #include "../common/Thread.h"  #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_ADDR INADDR_ANY
51  #define LSCP_PORT 8888  #define LSCP_PORT 8888
52    
53  using namespace LinuxSampler;  /// try up to 3 minutes to bind server socket
54    #define LSCP_SERVER_BIND_TIMEOUT 180
55    
56  /// 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).  using namespace LinuxSampler;
 extern int hSession;  
57    
58  // External references to the main scanner and parser functions  // External references to the main scanner and parser functions
59  extern int yyparse(void* YYPARSE_PARAM);  extern int yyparse(void* YYPARSE_PARAM);
60  extern int yylex_init(yyscan_t* scanner);  extern void restart(yyparse_param_t* pparam, int& yychar);
 extern int yylex_destroy(yyscan_t yyscanner);  
61    
62  /**  /**
63   * Network server for the LinuxSampler Control Protocol (LSCP).   * Network server for the LinuxSampler Control Protocol (LSCP).
64   */   */
65  class LSCPServer : public Thread {  class LSCPServer : public Thread {
66      public:      public:
67          LSCPServer(Sampler* pSampler);          LSCPServer(Sampler* pSampler, long int addr, short int port);
68            virtual ~LSCPServer();
69            int WaitUntilInitialized(long TimeoutSeconds = 0L, long TimeoutNanoSeconds = 0L);
70    
71          // Methods called by the parser          // Methods called by the parser
         String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters);  
72          String DestroyAudioOutputDevice(uint DeviceIndex);          String DestroyAudioOutputDevice(uint DeviceIndex);
73          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel);          String DestroyMidiInputDevice(uint DeviceIndex);
74          String LoadEngine(String EngineName, uint uiSamplerChannel);          String LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground = false);
75            String SetEngineType(String EngineName, uint uiSamplerChannel);
76          String GetChannels();          String GetChannels();
77            String ListChannels();
78          String AddChannel();          String AddChannel();
79          String RemoveChannel(uint uiSamplerChannel);          String RemoveChannel(uint uiSamplerChannel);
80          String GetAvailableEngines();          String GetAvailableEngines();
81            String ListAvailableEngines();
82          String GetEngineInfo(String EngineName);          String GetEngineInfo(String EngineName);
83          String GetChannelInfo(uint uiSamplerChannel);          String GetChannelInfo(uint uiSamplerChannel);
84          String GetVoiceCount(uint uiSamplerChannel);          String GetVoiceCount(uint uiSamplerChannel);
85          String GetStreamCount(uint uiSamplerChannel);          String GetStreamCount(uint uiSamplerChannel);
86          String GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel);          String GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel);
87          String GetAvailableAudioOutputDrivers();          String GetAvailableAudioOutputDrivers();
88            String ListAvailableAudioOutputDrivers();
89            String GetAvailableMidiInputDrivers();
90            String ListAvailableMidiInputDrivers();
91          String GetAudioOutputDriverInfo(String Driver);          String GetAudioOutputDriverInfo(String Driver);
92            String GetMidiInputDriverInfo(String Driver);
93  #ifdef __GNUC__  #ifdef __GNUC__
94          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)
95          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());          String GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
96            String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = StringMap());
97            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = StringMap());
98            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = StringMap());
99  #else  #else
100          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>());
101            String GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList = std::map<String,String>());
102            String CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
103            String CreateMidiInputDevice(String Driver, std::map<String,String> Parameters = std::map<String,String>());
104  #endif // __GNUC__  #endif // __GNUC__
105          String GetAudioOutputDeviceCount();          String GetAudioOutputDeviceCount();
106            String GetMidiInputDeviceCount();
107          String GetAudioOutputDevices();          String GetAudioOutputDevices();
108            String GetMidiInputDevices();
109          String GetAudioOutputDeviceInfo(uint DeviceIndex);          String GetAudioOutputDeviceInfo(uint DeviceIndex);
110            String GetMidiInputDeviceInfo(uint DeviceIndex);
111            String GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex);
112            String GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName);
113          String GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId);          String GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId);
114          String GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName);          String GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName);
115          String SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal);          String SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal);
116          String SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);          String SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
117            String SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal);
118            String SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal);
119          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);  
120          String SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel);          String SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel);
121          String SetVolume(double Volume, uint uiSamplerChannel);          String SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel);
122            String SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel);
123            String SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel);
124            String SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel);
125            String SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel);
126            String SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel);
127            String SetVolume(double dVolume, uint uiSamplerChannel);
128            String SetChannelMute(bool bMute, uint uiSamplerChannel);
129            String SetChannelSolo(bool bSolo, uint uiSamplerChannel);
130          String ResetChannel(uint uiSamplerChannel);          String ResetChannel(uint uiSamplerChannel);
131          String SubscribeNotification(uint UDPPort);          String ResetSampler();
132          String UnsubscribeNotification(String SessionID);          String GetServerInfo();
133            String GetTotalVoiceCount();
134            String GetTotalVoiceCountMax();
135            String SubscribeNotification(LSCPEvent::event_t);
136            String UnsubscribeNotification(LSCPEvent::event_t);
137            String QueryDatabase(String query);
138            String SetEcho(yyparse_param_t* pSession, double boolean_value);
139          void   AnswerClient(String ReturnMessage);          void   AnswerClient(String ReturnMessage);
140    
141            static int currentSocket;
142            static std::map<int,String> bufferedCommands;
143    
144            static void SendLSCPNotify( LSCPEvent Event );
145            static int EventSubscribers( std::list<LSCPEvent::event_t> events );
146            static void LockRTNotify( void ) { RTNotifyMutex.Lock(); }
147            static void UnlockRTNotify( void ) { RTNotifyMutex.Unlock(); }
148    
149      protected:      protected:
150          int            hSocket;          int            hSocket;
151          sockaddr_in    SocketAddress;          sockaddr_in    SocketAddress;
152          Sampler*       pSampler;          Sampler*       pSampler;
153            Condition      Initialized;
154            LSCPInstrumentLoader InstrumentLoader; ///< thread responsible for loading instruments in the background
155    
156          int Main(); ///< Implementation of virtual method from class Thread          int Main(); ///< Implementation of virtual method from class Thread
157    
158      private:      private:
159    
160          /**          /**
161           * Converts a result_t structure into a valid LSCP answer message.           * Find a created audio output device index.
162           */           */
163          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();  
         }  
 };  
   
   
 /**  
  * Instrument loader thread for the LinuxSampler Control Protocol (LSCP).  
  */  
 class LSCPLoadInstrument : public Thread {  
164    
165      public:          /**
166          LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument);           * Find a created midi input device index.
167             */
168      protected:          int GetMidiInputDeviceIndex (MidiInputDevice *pDevice);
         // Instance variables.  
         Engine* pEngine;  
         String  Filename;  
         uint    uiInstrument;  
169    
170          // Implementation of virtual method from class Thread.          bool HasSoloChannel();
171          int Main();          void MuteNonSoloChannels();
172            void UnmuteChannels();
173    
174            static std::map<int,String> bufferedNotifies;
175            static Mutex NotifyMutex;
176            static Mutex NotifyBufferMutex;
177            static bool GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter );
178            static void CloseConnection( std::vector<yyparse_param_t>::iterator iter );
179            static std::vector<yyparse_param_t> Sessions;
180            static Mutex SubscriptionMutex;
181            static std::map< LSCPEvent::event_t, std::list<int> > eventSubscriptions;
182            static fd_set fdSet;
183    
184            //Protect main thread that generates real time notify messages
185            //like voice count, stream count and buffer fill
186            //from LSCP server removing engines and channels from underneath
187            static Mutex RTNotifyMutex;
188  };  };
189    
190  #endif // __LSCPSERVER_H_  #endif // __LSCPSERVER_H_
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