/[svn]/linuxsampler/trunk/src/network/lscpserver.cpp
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Diff of /linuxsampler/trunk/src/network/lscpserver.cpp

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revision 1403 by iliev, Fri Oct 12 09:12:22 2007 UTC revision 1551 by schoenebeck, Wed Dec 5 22:05:28 2007 UTC
# Line 25  Line 25 
25  #include "lscpresultset.h"  #include "lscpresultset.h"
26  #include "lscpevent.h"  #include "lscpevent.h"
27    
28    #if defined(WIN32)
29    #include <windows.h>
30    #else
31  #include <fcntl.h>  #include <fcntl.h>
32    #endif
33    
34  #if ! HAVE_SQLITE3  #if ! HAVE_SQLITE3
35  #define DOESNT_HAVE_SQLITE3 "No database support. SQLITE3 was not installed when linuxsampler was built."  #define DOESNT_HAVE_SQLITE3 "No database support. SQLITE3 was not installed when linuxsampler was built."
# Line 123  LSCPServer::LSCPServer(Sampler* pSampler Line 127  LSCPServer::LSCPServer(Sampler* pSampler
127      LSCPEvent::RegisterEvent(LSCPEvent::event_db_instr_info, "DB_INSTRUMENT_INFO");      LSCPEvent::RegisterEvent(LSCPEvent::event_db_instr_info, "DB_INSTRUMENT_INFO");
128      LSCPEvent::RegisterEvent(LSCPEvent::event_db_instrs_job_info, "DB_INSTRUMENTS_JOB_INFO");      LSCPEvent::RegisterEvent(LSCPEvent::event_db_instrs_job_info, "DB_INSTRUMENTS_JOB_INFO");
129      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
130        LSCPEvent::RegisterEvent(LSCPEvent::event_total_stream_count, "TOTAL_STREAM_COUNT");
131      LSCPEvent::RegisterEvent(LSCPEvent::event_total_voice_count, "TOTAL_VOICE_COUNT");      LSCPEvent::RegisterEvent(LSCPEvent::event_total_voice_count, "TOTAL_VOICE_COUNT");
132      LSCPEvent::RegisterEvent(LSCPEvent::event_global_info, "GLOBAL_INFO");      LSCPEvent::RegisterEvent(LSCPEvent::event_global_info, "GLOBAL_INFO");
133      hSocket = -1;      hSocket = -1;
134  }  }
135    
136  LSCPServer::~LSCPServer() {  LSCPServer::~LSCPServer() {
137    #if defined(WIN32)
138        if (hSocket >= 0) closesocket(hSocket);
139    #else
140      if (hSocket >= 0) close(hSocket);      if (hSocket >= 0) close(hSocket);
141    #endif
142  }  }
143    
144  void LSCPServer::EventHandler::ChannelCountChanged(int NewCount) {  void LSCPServer::EventHandler::ChannelCountChanged(int NewCount) {
# Line 180  void LSCPServer::EventHandler::TotalVoic Line 189  void LSCPServer::EventHandler::TotalVoic
189      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_total_voice_count, NewCount));      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_total_voice_count, NewCount));
190  }  }
191    
192    void LSCPServer::EventHandler::TotalStreamCountChanged(int NewCount) {
193        LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_total_stream_count, NewCount));
194    }
195    
196  #if HAVE_SQLITE3  #if HAVE_SQLITE3
197  void LSCPServer::DbInstrumentsEventHandler::DirectoryCountChanged(String Dir) {  void LSCPServer::DbInstrumentsEventHandler::DirectoryCountChanged(String Dir) {
198      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_db_instr_dir_count, InstrumentsDb::toEscapedPath(Dir)));      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_db_instr_dir_count, InstrumentsDb::toEscapedPath(Dir)));
# Line 230  int LSCPServer::WaitUntilInitialized(lon Line 243  int LSCPServer::WaitUntilInitialized(lon
243  }  }
244    
245  int LSCPServer::Main() {  int LSCPServer::Main() {
246            #if defined(WIN32)
247            WSADATA wsaData;
248            int iResult;
249            iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
250            if (iResult != 0) {
251                    std::cerr << "LSCPServer: WSAStartup failed: " << iResult << "\n";
252                    exit(EXIT_FAILURE);
253            }
254            #endif
255      hSocket = socket(AF_INET, SOCK_STREAM, 0);      hSocket = socket(AF_INET, SOCK_STREAM, 0);
256      if (hSocket < 0) {      if (hSocket < 0) {
257          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
# Line 243  int LSCPServer::Main() { Line 265  int LSCPServer::Main() {
265              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
266                  if (trial > LSCP_SERVER_BIND_TIMEOUT) {                  if (trial > LSCP_SERVER_BIND_TIMEOUT) {
267                      std::cerr << "gave up!" << std::endl;                      std::cerr << "gave up!" << std::endl;
268                        #if defined(WIN32)
269                        closesocket(hSocket);
270                        #else
271                      close(hSocket);                      close(hSocket);
272                        #endif
273                      //return -1;                      //return -1;
274                      exit(EXIT_FAILURE);                      exit(EXIT_FAILURE);
275                  }                  }
# Line 263  int LSCPServer::Main() { Line 289  int LSCPServer::Main() {
289      pSampler->AddVoiceCountListener(&eventHandler);      pSampler->AddVoiceCountListener(&eventHandler);
290      pSampler->AddStreamCountListener(&eventHandler);      pSampler->AddStreamCountListener(&eventHandler);
291      pSampler->AddBufferFillListener(&eventHandler);      pSampler->AddBufferFillListener(&eventHandler);
292        pSampler->AddTotalStreamCountListener(&eventHandler);
293      pSampler->AddTotalVoiceCountListener(&eventHandler);      pSampler->AddTotalVoiceCountListener(&eventHandler);
294      pSampler->AddFxSendCountListener(&eventHandler);      pSampler->AddFxSendCountListener(&eventHandler);
295      MidiInstrumentMapper::AddMidiInstrumentCountListener(&eventHandler);      MidiInstrumentMapper::AddMidiInstrumentCountListener(&eventHandler);
# Line 325  int LSCPServer::Main() { Line 352  int LSCPServer::Main() {
352                  continue; //Nothing try again                  continue; //Nothing try again
353          if (retval == -1) {          if (retval == -1) {
354                  std::cerr << "LSCPServer: Socket select error." << std::endl;                  std::cerr << "LSCPServer: Socket select error." << std::endl;
355                    #if defined(WIN32)
356                    closesocket(hSocket);
357                    #else
358                  close(hSocket);                  close(hSocket);
359                    #endif
360                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
361          }          }
362    
# Line 337  int LSCPServer::Main() { Line 368  int LSCPServer::Main() {
368                          exit(EXIT_FAILURE);                          exit(EXIT_FAILURE);
369                  }                  }
370    
371                    #if defined(WIN32)
372                    u_long nonblock_io = 1;
373                    if( ioctlsocket(socket, FIONBIO, &nonblock_io) ) {
374                      std::cerr << "LSCPServer: ioctlsocket: set FIONBIO failed. Error " << WSAGetLastError() << std::endl;
375                      exit(EXIT_FAILURE);
376                    }
377            #else
378                  if (fcntl(socket, F_SETFL, O_NONBLOCK)) {                  if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
379                          std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;                          std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
380                          exit(EXIT_FAILURE);                          exit(EXIT_FAILURE);
381                  }                  }
382                    #endif
383    
384                  // Parser initialization                  // Parser initialization
385                  yyparse_param_t yyparse_param;                  yyparse_param_t yyparse_param;
# Line 399  void LSCPServer::CloseConnection( std::v Line 438  void LSCPServer::CloseConnection( std::v
438          NotifyMutex.Lock();          NotifyMutex.Lock();
439          bufferedCommands.erase(socket);          bufferedCommands.erase(socket);
440          bufferedNotifies.erase(socket);          bufferedNotifies.erase(socket);
441            #if defined(WIN32)
442            closesocket(socket);
443            #else
444          close(socket);          close(socket);
445            #endif
446          NotifyMutex.Unlock();          NotifyMutex.Unlock();
447  }  }
448    
449    void LSCPServer::LockRTNotify() {
450        RTNotifyMutex.Lock();
451    }
452    
453    void LSCPServer::UnlockRTNotify() {
454        RTNotifyMutex.Unlock();
455    }
456    
457  int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {  int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
458          int subs = 0;          int subs = 0;
459          SubscriptionMutex.Lock();          SubscriptionMutex.Lock();
# Line 478  bool LSCPServer::GetLSCPCommand( std::ve Line 529  bool LSCPServer::GetLSCPCommand( std::ve
529          char c;          char c;
530          int i = 0;          int i = 0;
531          while (true) {          while (true) {
532                    #if defined(WIN32)
533                    int result = recv(socket, (char *)&c, 1, 0); //Read one character at a time for now
534                    #else
535                  int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now                  int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
536                    #endif
537                  if (result == 0) { //socket was selected, so 0 here means client has closed the connection                  if (result == 0) { //socket was selected, so 0 here means client has closed the connection
538                          CloseConnection(iter);                          CloseConnection(iter);
539                          break;                          break;
# Line 493  bool LSCPServer::GetLSCPCommand( std::ve Line 548  bool LSCPServer::GetLSCPCommand( std::ve
548                          }                          }
549                          bufferedCommands[socket] += c;                          bufferedCommands[socket] += c;
550                  }                  }
551                    #if defined(WIN32)
552                    if (result == SOCKET_ERROR) {
553                        int wsa_lasterror = WSAGetLastError();
554                            if (wsa_lasterror == WSAEWOULDBLOCK) //Would block, try again later.
555                                    return false;
556                            dmsg(2,("LSCPScanner: Socket error after recv() Error %d.\n", wsa_lasterror));
557                            CloseConnection(iter);
558                            break;
559                    }
560                    #else
561                  if (result == -1) {                  if (result == -1) {
562                          if (errno == EAGAIN) //Would block, try again later.                          if (errno == EAGAIN) //Would block, try again later.
563                                  return false;                                  return false;
# Line 531  bool LSCPServer::GetLSCPCommand( std::ve Line 596  bool LSCPServer::GetLSCPCommand( std::ve
596                          CloseConnection(iter);                          CloseConnection(iter);
597                          break;                          break;
598                  }                  }
599                    #endif
600          }          }
601          return false;          return false;
602  }  }
# Line 877  String LSCPServer::GetChannelInfo(uint u Line 943  String LSCPServer::GetChannelInfo(uint u
943          if (pSamplerChannel->GetMidiInputChannel() == midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");          if (pSamplerChannel->GetMidiInputChannel() == midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
944          else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());          else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
945    
946          result.Add("INSTRUMENT_FILE",          // convert the filename into the correct encoding as defined for LSCP
947                     (InstrumentFileName != "NONE" && InstrumentFileName != "") ?          // (especially in terms of special characters -> escape sequences)
948                          Path::fromPosix(InstrumentFileName).toLscp() : // TODO: assuming POSIX          if (InstrumentFileName != "NONE" && InstrumentFileName != "") {
949                          InstrumentFileName  #if WIN32
950          );              InstrumentFileName = Path::fromWindows(InstrumentFileName).toLscp();
951    #else
952                // assuming POSIX
953                InstrumentFileName = Path::fromPosix(InstrumentFileName).toLscp();
954    #endif
955            }
956    
957            result.Add("INSTRUMENT_FILE", InstrumentFileName);
958          result.Add("INSTRUMENT_NR", InstrumentIndex);          result.Add("INSTRUMENT_NR", InstrumentIndex);
959          result.Add("INSTRUMENT_NAME", _escapeLscpResponse(InstrumentName));          result.Add("INSTRUMENT_NAME", _escapeLscpResponse(InstrumentName));
960          result.Add("INSTRUMENT_STATUS", InstrumentStatus);          result.Add("INSTRUMENT_STATUS", InstrumentStatus);
# Line 1825  String LSCPServer::GetMidiInstrumentMapp Line 1898  String LSCPServer::GetMidiInstrumentMapp
1898          std::map<midi_prog_index_t,MidiInstrumentMapper::entry_t>::iterator iter = mappings.find(idx);          std::map<midi_prog_index_t,MidiInstrumentMapper::entry_t>::iterator iter = mappings.find(idx);
1899          if (iter == mappings.end()) result.Error("there is no map entry with that index");          if (iter == mappings.end()) result.Error("there is no map entry with that index");
1900          else { // found          else { // found
1901    
1902                // convert the filename into the correct encoding as defined for LSCP
1903                // (especially in terms of special characters -> escape sequences)
1904    #if WIN32
1905                const String instrumentFileName = Path::fromWindows(iter->second.InstrumentFile).toLscp();
1906    #else
1907                // assuming POSIX
1908                const String instrumentFileName = Path::fromPosix(iter->second.InstrumentFile).toLscp();
1909    #endif
1910    
1911              result.Add("NAME", _escapeLscpResponse(iter->second.Name));              result.Add("NAME", _escapeLscpResponse(iter->second.Name));
1912              result.Add("ENGINE_NAME", iter->second.EngineName);              result.Add("ENGINE_NAME", iter->second.EngineName);
1913              result.Add("INSTRUMENT_FILE", Path::fromPosix(iter->second.InstrumentFile).toLscp()); //TODO: assuming POSIX              result.Add("INSTRUMENT_FILE", instrumentFileName);
1914              result.Add("INSTRUMENT_NR", (int) iter->second.InstrumentIndex);              result.Add("INSTRUMENT_NR", (int) iter->second.InstrumentIndex);
1915              String instrumentName;              String instrumentName;
1916              Engine* pEngine = EngineFactory::Create(iter->second.EngineName);              Engine* pEngine = EngineFactory::Create(iter->second.EngineName);
# Line 2278  String LSCPServer::GetServerInfo() { Line 2361  String LSCPServer::GetServerInfo() {
2361  }  }
2362    
2363  /**  /**
2364     * Will be called by the parser to return the current number of all active streams.
2365     */
2366    String LSCPServer::GetTotalStreamCount() {
2367        dmsg(2,("LSCPServer: GetTotalStreamCount()\n"));
2368        LSCPResultSet result;
2369        result.Add(pSampler->GetDiskStreamCount());
2370        return result.Produce();
2371    }
2372    
2373    /**
2374   * Will be called by the parser to return the current number of all active voices.   * Will be called by the parser to return the current number of all active voices.
2375   */   */
2376  String LSCPServer::GetTotalVoiceCount() {  String LSCPServer::GetTotalVoiceCount() {
# Line 2315  String LSCPServer::SetGlobalVolume(doubl Line 2408  String LSCPServer::SetGlobalVolume(doubl
2408      return result.Produce();      return result.Produce();
2409  }  }
2410    
2411    String LSCPServer::GetFileInstruments(String Filename) {
2412        dmsg(2,("LSCPServer: GetFileInstruments(String Filename=%s)\n",Filename.c_str()));
2413        LSCPResultSet result;
2414        try {
2415            VerifyFile(Filename);
2416        } catch (Exception e) {
2417            result.Error(e);
2418            return result.Produce();
2419        }
2420        // try to find a sampler engine that can handle the file
2421        bool bFound = false;
2422        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2423        for (int i = 0; !bFound && i < engineTypes.size(); i++) {
2424            Engine* pEngine = NULL;
2425            try {
2426                pEngine = EngineFactory::Create(engineTypes[i]);
2427                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2428                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2429                if (pManager) {
2430                    std::vector<InstrumentManager::instrument_id_t> IDs =
2431                        pManager->GetInstrumentFileContent(Filename);
2432                    // return the amount of instruments in the file
2433                    result.Add(IDs.size());
2434                    // no more need to ask other engine types
2435                    bFound = true;
2436                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2437            } catch (Exception e) {
2438                // NOOP, as exception is thrown if engine doesn't support file
2439            }
2440            if (pEngine) EngineFactory::Destroy(pEngine);
2441        }
2442    
2443        if (!bFound) result.Error("Unknown file format");
2444        return result.Produce();
2445    }
2446    
2447    String LSCPServer::ListFileInstruments(String Filename) {
2448        dmsg(2,("LSCPServer: ListFileInstruments(String Filename=%s)\n",Filename.c_str()));
2449        LSCPResultSet result;
2450        try {
2451            VerifyFile(Filename);
2452        } catch (Exception e) {
2453            result.Error(e);
2454            return result.Produce();
2455        }
2456        // try to find a sampler engine that can handle the file
2457        bool bFound = false;
2458        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2459        for (int i = 0; !bFound && i < engineTypes.size(); i++) {
2460            Engine* pEngine = NULL;
2461            try {
2462                pEngine = EngineFactory::Create(engineTypes[i]);
2463                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2464                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2465                if (pManager) {
2466                    std::vector<InstrumentManager::instrument_id_t> IDs =
2467                        pManager->GetInstrumentFileContent(Filename);
2468                    // return a list of IDs of the instruments in the file
2469                    String s;
2470                    for (int j = 0; j < IDs.size(); j++) {
2471                        if (s.size()) s += ",";
2472                        s += ToString(IDs[j].Index);
2473                    }
2474                    result.Add(s);
2475                    // no more need to ask other engine types
2476                    bFound = true;
2477                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2478            } catch (Exception e) {
2479                // NOOP, as exception is thrown if engine doesn't support file
2480            }
2481            if (pEngine) EngineFactory::Destroy(pEngine);
2482        }
2483    
2484        if (!bFound) result.Error("Unknown file format");
2485        return result.Produce();
2486    }
2487    
2488    String LSCPServer::GetFileInstrumentInfo(String Filename, uint InstrumentID) {
2489        dmsg(2,("LSCPServer: GetFileInstrumentInfo(String Filename=%s, InstrumentID=%d)\n",Filename.c_str(),InstrumentID));
2490        LSCPResultSet result;
2491        try {
2492            VerifyFile(Filename);
2493        } catch (Exception e) {
2494            result.Error(e);
2495            return result.Produce();
2496        }
2497        InstrumentManager::instrument_id_t id;
2498        id.FileName = Filename;
2499        id.Index    = InstrumentID;
2500        // try to find a sampler engine that can handle the file
2501        bool bFound = false;
2502        bool bFatalErr = false;
2503        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2504        for (int i = 0; !bFound && !bFatalErr && i < engineTypes.size(); i++) {
2505            Engine* pEngine = NULL;
2506            try {
2507                pEngine = EngineFactory::Create(engineTypes[i]);
2508                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2509                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2510                if (pManager) {
2511                    // check if the instrument index is valid
2512                    // FIXME: this won't work if an engine only supports parts of the instrument file
2513                    std::vector<InstrumentManager::instrument_id_t> IDs =
2514                        pManager->GetInstrumentFileContent(Filename);
2515                    if (std::find(IDs.begin(), IDs.end(), id) == IDs.end()) {
2516                        std::stringstream ss;
2517                        ss << "Invalid instrument index " << InstrumentID << " for instrument file '" << Filename << "'";
2518                        bFatalErr = true;
2519                        throw Exception(ss.str());
2520                    }
2521                    // get the info of the requested instrument
2522                    InstrumentManager::instrument_info_t info =
2523                        pManager->GetInstrumentInfo(id);
2524                    // return detailed informations about the file
2525                    result.Add("NAME", info.InstrumentName);
2526                    result.Add("FORMAT_FAMILY", engineTypes[i]);
2527                    result.Add("FORMAT_VERSION", info.FormatVersion);
2528                    result.Add("PRODUCT", info.Product);
2529                    result.Add("ARTISTS", info.Artists);
2530                    // no more need to ask other engine types
2531                    bFound = true;
2532                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2533            } catch (Exception e) {
2534                // usually NOOP, as exception is thrown if engine doesn't support file
2535                if (bFatalErr) result.Error(e);
2536            }
2537            if (pEngine) EngineFactory::Destroy(pEngine);
2538        }
2539    
2540        if (!bFound && !bFatalErr) result.Error("Unknown file format");
2541        return result.Produce();
2542    }
2543    
2544    void LSCPServer::VerifyFile(String Filename) {
2545        #if WIN32
2546        WIN32_FIND_DATA win32FileAttributeData;
2547        BOOL res = GetFileAttributesEx( Filename.c_str(), GetFileExInfoStandard, &win32FileAttributeData );
2548        if (!res) {
2549            std::stringstream ss;
2550            ss << "File does not exist, GetFileAttributesEx failed `" << Filename << "`: Error " << GetLastError();
2551            throw Exception(ss.str());
2552        }
2553        if ( win32FileAttributeData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) {
2554            throw Exception("Directory is specified");
2555        }
2556        #else
2557        struct stat statBuf;
2558        int res = stat(Filename.c_str(), &statBuf);
2559        if (res) {
2560            std::stringstream ss;
2561            ss << "Fail to stat `" << Filename << "`: " << strerror(errno);
2562            throw Exception(ss.str());
2563        }
2564    
2565        if (S_ISDIR(statBuf.st_mode)) {
2566            throw Exception("Directory is specified");
2567        }
2568        #endif
2569    }
2570    
2571  /**  /**
2572   * Will be called by the parser to subscribe a client (frontend) on the   * Will be called by the parser to subscribe a client (frontend) on the
2573   * server for receiving event messages.   * server for receiving event messages.
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