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

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revision 1481 by senoner, Wed Nov 14 23:42:15 2007 UTC revision 1536 by schoenebeck, Mon Dec 3 16:41:17 2007 UTC
# Line 367  int LSCPServer::Main() { Line 367  int LSCPServer::Main() {
367                    std::cerr << "LSCPServer: ioctlsocket: set FIONBIO failed. Error " << WSAGetLastError() << std::endl;                    std::cerr << "LSCPServer: ioctlsocket: set FIONBIO failed. Error " << WSAGetLastError() << std::endl;
368                    exit(EXIT_FAILURE);                    exit(EXIT_FAILURE);
369                  }                  }
370          #else                    #else
371                  if (fcntl(socket, F_SETFL, O_NONBLOCK)) {                  if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
372                          std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;                          std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
373                          exit(EXIT_FAILURE);                          exit(EXIT_FAILURE);
# Line 538  bool LSCPServer::GetLSCPCommand( std::ve Line 538  bool LSCPServer::GetLSCPCommand( std::ve
538                      int wsa_lasterror = WSAGetLastError();                      int wsa_lasterror = WSAGetLastError();
539                          if (wsa_lasterror == WSAEWOULDBLOCK) //Would block, try again later.                          if (wsa_lasterror == WSAEWOULDBLOCK) //Would block, try again later.
540                                  return false;                                  return false;
541                          dmsg(2,("LSCPScanner: Socket error after recv() Error %d.\n", wsa_lasterror));                            dmsg(2,("LSCPScanner: Socket error after recv() Error %d.\n", wsa_lasterror));
542                          CloseConnection(iter);                          CloseConnection(iter);
543                          break;                          break;
544                  }                  }
# Line 2383  String LSCPServer::SetGlobalVolume(doubl Line 2383  String LSCPServer::SetGlobalVolume(doubl
2383      return result.Produce();      return result.Produce();
2384  }  }
2385    
2386    String LSCPServer::GetFileInstruments(String Filename) {
2387        dmsg(2,("LSCPServer: GetFileInstruments(String Filename=%s)\n",Filename.c_str()));
2388        LSCPResultSet result;
2389        try {
2390            VerifyFile(Filename);
2391        } catch (Exception e) {
2392            result.Error(e);
2393            return result.Produce();
2394        }
2395        // try to find a sampler engine that can handle the file
2396        bool bFound = false;
2397        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2398        for (int i = 0; !bFound && i < engineTypes.size(); i++) {
2399            Engine* pEngine = NULL;
2400            try {
2401                pEngine = EngineFactory::Create(engineTypes[i]);
2402                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2403                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2404                if (pManager) {
2405                    std::vector<InstrumentManager::instrument_id_t> IDs =
2406                        pManager->GetInstrumentFileContent(Filename);
2407                    // return the amount of instruments in the file
2408                    result.Add(IDs.size());
2409                    // no more need to ask other engine types
2410                    bFound = true;
2411                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2412            } catch (Exception e) {
2413                // NOOP, as exception is thrown if engine doesn't support file
2414            }
2415            if (pEngine) EngineFactory::Destroy(pEngine);
2416        }
2417    
2418        if (!bFound) result.Error("Unknown file format");
2419        return result.Produce();
2420    }
2421    
2422    String LSCPServer::ListFileInstruments(String Filename) {
2423        dmsg(2,("LSCPServer: ListFileInstruments(String Filename=%s)\n",Filename.c_str()));
2424        LSCPResultSet result;
2425        try {
2426            VerifyFile(Filename);
2427        } catch (Exception e) {
2428            result.Error(e);
2429            return result.Produce();
2430        }
2431        // try to find a sampler engine that can handle the file
2432        bool bFound = false;
2433        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2434        for (int i = 0; !bFound && i < engineTypes.size(); i++) {
2435            Engine* pEngine = NULL;
2436            try {
2437                pEngine = EngineFactory::Create(engineTypes[i]);
2438                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2439                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2440                if (pManager) {
2441                    std::vector<InstrumentManager::instrument_id_t> IDs =
2442                        pManager->GetInstrumentFileContent(Filename);
2443                    // return a list of IDs of the instruments in the file
2444                    String s;
2445                    for (int j = 0; j < IDs.size(); j++) {
2446                        if (s.size()) s += ",";
2447                        s += ToString(IDs[j].Index);
2448                    }
2449                    result.Add(s);
2450                    // no more need to ask other engine types
2451                    bFound = true;
2452                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2453            } catch (Exception e) {
2454                // NOOP, as exception is thrown if engine doesn't support file
2455            }
2456            if (pEngine) EngineFactory::Destroy(pEngine);
2457        }
2458    
2459        if (!bFound) result.Error("Unknown file format");
2460        return result.Produce();
2461    }
2462    
2463    String LSCPServer::GetFileInstrumentInfo(String Filename, uint InstrumentID) {
2464        dmsg(2,("LSCPServer: GetFileInstrumentInfo(String Filename=%s, InstrumentID=%d)\n",Filename.c_str(),InstrumentID));
2465        LSCPResultSet result;
2466        try {
2467            VerifyFile(Filename);
2468        } catch (Exception e) {
2469            result.Error(e);
2470            return result.Produce();
2471        }
2472        InstrumentManager::instrument_id_t id;
2473        id.FileName = Filename;
2474        id.Index    = InstrumentID;
2475        // try to find a sampler engine that can handle the file
2476        bool bFound = false;
2477        bool bFatalErr = false;
2478        std::vector<String> engineTypes = EngineFactory::AvailableEngineTypes();
2479        for (int i = 0; !bFound && !bFatalErr && i < engineTypes.size(); i++) {
2480            Engine* pEngine = NULL;
2481            try {
2482                pEngine = EngineFactory::Create(engineTypes[i]);
2483                if (!pEngine) throw Exception("Internal error: could not create '" + engineTypes[i] + "' engine");
2484                InstrumentManager* pManager = pEngine->GetInstrumentManager();
2485                if (pManager) {
2486                    // check if the instrument index is valid
2487                    // FIXME: this won't work if an engine only supports parts of the instrument file
2488                    std::vector<InstrumentManager::instrument_id_t> IDs =
2489                        pManager->GetInstrumentFileContent(Filename);
2490                    if (std::find(IDs.begin(), IDs.end(), id) == IDs.end()) {
2491                        std::stringstream ss;
2492                        ss << "Invalid instrument index " << InstrumentID << " for instrument file '" << Filename << "'";
2493                        bFatalErr = true;
2494                        throw Exception(ss.str());
2495                    }
2496                    // get the info of the requested instrument
2497                    InstrumentManager::instrument_info_t info =
2498                        pManager->GetInstrumentInfo(id);
2499                    // return detailed informations about the file
2500                    result.Add("NAME", info.InstrumentName);
2501                    result.Add("FORMAT_FAMILY", engineTypes[i]);
2502                    result.Add("FORMAT_VERSION", info.FormatVersion);
2503                    result.Add("PRODUCT", info.Product);
2504                    result.Add("ARTISTS", info.Artists);
2505                    // no more need to ask other engine types
2506                    bFound = true;
2507                } else dmsg(1,("Warning: engine '%s' does not provide an instrument manager\n", engineTypes[i].c_str()));
2508            } catch (Exception e) {
2509                // usually NOOP, as exception is thrown if engine doesn't support file
2510                if (bFatalErr) result.Error(e);
2511            }
2512            if (pEngine) EngineFactory::Destroy(pEngine);
2513        }
2514    
2515        if (!bFound && !bFatalErr) result.Error("Unknown file format");
2516        return result.Produce();
2517    }
2518    
2519    void LSCPServer::VerifyFile(String Filename) {
2520        struct stat statBuf;
2521        int res = stat(Filename.c_str(), &statBuf);
2522        if (res) {
2523            std::stringstream ss;
2524            ss << "Fail to stat `" << Filename << "`: " << strerror(errno);
2525            throw Exception(ss.str());
2526        }
2527    
2528        if (S_ISDIR(statBuf.st_mode)) {
2529            throw Exception("Directory is specified");
2530        }
2531    }
2532    
2533  /**  /**
2534   * 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
2535   * server for receiving event messages.   * server for receiving event messages.
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