/[svn]/linuxsampler/trunk/src/linuxsampler.cpp
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revision 33 by schoenebeck, Mon Feb 16 19:30:42 2004 UTC revision 319 by schoenebeck, Mon Dec 13 00:46:42 2004 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   *                                                                         *   *                                                                         *
7   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
8   *   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  *
# Line 20  Line 20 
20   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
21   ***************************************************************************/   ***************************************************************************/
22    
 #include <stdio.h>  
 #include <stdlib.h>  
 #include <unistd.h>  
23  #include <getopt.h>  #include <getopt.h>
24  #include <signal.h>  #include <signal.h>
 #include <pthread.h>  
25    
26  #include "global.h"  #include "Sampler.h"
27  #include "diskthread.h"  #include "drivers/midi/MidiInputDeviceFactory.h"
28  #include "audiothread.h"  #include "drivers/audio/AudioOutputDeviceFactory.h"
29  #include "alsaio.h"  #include "network/lscpserver.h"
30  #include "jackio.h"  #include "common/stacktrace.h"
31  #include "midiin.h"  #include "common/Features.h"
32  #include "stream.h"  
33  #include "RIFF.h"  using namespace LinuxSampler;
34  #include "gig.h"  
35    Sampler*    pSampler    = NULL;
36  #define AUDIO_CHANNELS          2     // stereo  LSCPServer* pLSCPServer = NULL;
37  #define AUDIO_FRAGMENTS         3     // 3 fragments, if it does not work set it to 2  pthread_t   main_thread;
 #define AUDIO_FRAGMENTSIZE      512   // each fragment has 512 frames  
 #define AUDIO_SAMPLERATE        44100 // Hz  
   
 enum patch_format_t {  
     patch_format_unknown,  
     patch_format_gig,  
     patch_format_dls  
 } patch_format;  
   
 AudioIO*         pAudioIO;  
 DiskThread*      pDiskThread;  
 AudioThread*     pAudioThread;  
 MidiIn*          pMidiInThread;  
 RIFF::File*      pRIFF;  
 gig::File*       pGig;  
 gig::Instrument* pInstrument;  
 uint             instrument_index;  
 double           volume;  
 int              num_fragments;  
 int              fragmentsize;  
 String           input_client;  
 String           alsaout;  
 String           jack_playback[2];  
 bool             use_jack;  
 pthread_t        signalhandlerthread;  
 uint             samplerate;  
38    
39  void parse_options(int argc, char **argv);  void parse_options(int argc, char **argv);
40  void signal_handler(int signal);  void signal_handler(int signal);
41    void kill_app();
42    
43  int main(int argc, char **argv) {  int main(int argc, char **argv) {
44      pAudioIO = NULL;  
45      pRIFF    = NULL;      // initialize the stack trace mechanism with our binary file
46      pGig     = NULL;      StackTraceInit(argv[0], -1);
47    
48        main_thread = pthread_self();
49    
50      // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)      // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
     signalhandlerthread = pthread_self();  
51      signal(SIGINT, signal_handler);      signal(SIGINT, signal_handler);
52    
53      patch_format      = patch_format_unknown;      // register signal handler for all unusual signals
54      instrument_index  = 0;      // (we will print the stack trace and exit)
55      num_fragments     = AUDIO_FRAGMENTS;      struct sigaction sact;
56      fragmentsize      = AUDIO_FRAGMENTSIZE;      sigemptyset(&sact.sa_mask);
57      volume            = 0.25; // default volume      sact.sa_flags   = 0;
58      alsaout           = "0,0"; // default card      sact.sa_handler = signal_handler;
59      jack_playback[0]  = "";      sigaction(SIGSEGV, &sact, NULL);
60      jack_playback[1]  = "";      sigaction(SIGBUS,  &sact, NULL);
61      samplerate        = AUDIO_SAMPLERATE;      sigaction(SIGILL,  &sact, NULL);
62      use_jack          = true;      sigaction(SIGFPE,  &sact, NULL);
63        sigaction(SIGUSR1, &sact, NULL);
64        sigaction(SIGUSR2, &sact, NULL);
65    
66      // parse and assign command line options      // parse and assign command line options
67      parse_options(argc, argv);      //parse_options(argc, argv);
68    
69      if (patch_format != patch_format_gig) {      dmsg(1,("LinuxSampler %s\n", VERSION));
70          printf("Sorry only Gigasampler loading migrated in LinuxSampler so far, use --gig to load a .gig file!\n");      dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
         printf("Use 'linuxsampler --help' to see all available options.\n");  
         return EXIT_FAILURE;  
     }  
71    
72      int error = 1;      // detect and print system / CPU specific features
73  #if HAVE_JACK      String sFeatures;
74      if (use_jack) {      Features::detect();
75          dmsg(1,("Initializing audio output (Jack)..."));      #if ARCH_X86
76          pAudioIO = new JackIO();      if (Features::supportsMMX()) sFeatures += " MMX";
77          error = ((JackIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, jack_playback);      if (Features::supportsSSE()) sFeatures += " SSE";
78          if (error) dmsg(1,("Trying Alsa output instead.\n"));      #endif // ARCH_X86
79      }      if (!sFeatures.size()) sFeatures = " None";
80  #endif // HAVE_JACK      dmsg(1,("Detected features:%s\n",sFeatures.c_str()));
81      if (error) {  
82          dmsg(1,("Initializing audio output (Alsa)..."));      // create LinuxSampler instance
83          pAudioIO = new AlsaIO();      dmsg(1,("Creating Sampler..."));
84          int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, samplerate, num_fragments, fragmentsize, alsaout);      pSampler = new Sampler;
         if (error) return EXIT_FAILURE;  
     }  
85      dmsg(1,("OK\n"));      dmsg(1,("OK\n"));
86    
87      // Loading gig file      dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
88      try {      dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
         printf("Loading gig file...");  
         fflush(stdout);  
         pRIFF       = new RIFF::File(argv[argc - 1]);  
         pGig        = new gig::File(pRIFF);  
         pInstrument = pGig->GetInstrument(instrument_index);  
         if (!pInstrument) {  
             printf("there's no instrument with index %d.\n", instrument_index);  
             exit(EXIT_FAILURE);  
         }  
         pGig->GetFirstSample(); // just to complete instrument loading before we enter the realtime part  
         printf("OK\n");  
         fflush(stdout);  
     }  
     catch (RIFF::Exception e) {  
         e.PrintMessage();  
         return EXIT_FAILURE;  
     }  
     catch (...) {  
         printf("Unknown exception while trying to parse gig file.\n");  
         return EXIT_FAILURE;  
     }  
   
     DiskThread*  pDiskThread   = new DiskThread(((pAudioIO->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo  
     AudioThread* pAudioThread  = new AudioThread(pAudioIO, pDiskThread, pInstrument);  
     MidiIn*      pMidiInThread = new MidiIn(pAudioThread);  
   
     dmsg(1,("Starting disk thread..."));  
     pDiskThread->StartThread();  
     dmsg(1,("OK\n"));  
     dmsg(1,("Starting MIDI in thread..."));  
     if (input_client.size() > 0) pMidiInThread->SubscribeToClient(input_client.c_str());  
     pMidiInThread->StartThread();  
     dmsg(1,("OK\n"));  
89    
90      sleep(1);      // start LSCP network server
91      dmsg(1,("Starting audio thread..."));      dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
92      pAudioThread->Volume = volume;      pLSCPServer = new LSCPServer(pSampler);
93      pAudioIO->AssignEngine(pAudioThread);      pLSCPServer->StartThread();
94      pAudioIO->Activate();      pLSCPServer->WaitUntilInitialized();
95      dmsg(1,("OK\n"));      dmsg(1,("OK\n"));
96    
97      printf("LinuxSampler initialization completed.\n");      printf("LinuxSampler initialization completed.\n");
98    
99      while(true)  {      while(true)  {
100        printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",        /*printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
101              pAudioThread->ActiveVoiceCount, pAudioThread->ActiveVoiceCountMax,              pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
102              pDiskThread->ActiveStreamCount, pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());              pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
103        fflush(stdout);        fflush(stdout);*/
104        usleep(500000);        usleep(500000);
105      }      }
106    
107      return EXIT_SUCCESS;      return EXIT_SUCCESS;
108  }  }
109    
110  void signal_handler(int signal) {  void signal_handler(int iSignal) {
111      if (pthread_equal(pthread_self(), signalhandlerthread) && signal == SIGINT) {      switch (iSignal) {
112          // stop all threads          case SIGINT: {
113          if (pAudioIO)      pAudioIO->Close();              if (pthread_equal(pthread_self(), main_thread)) {
114          if (pMidiInThread) pMidiInThread->StopThread();                  if (pLSCPServer) {
115          if (pDiskThread)   pDiskThread->StopThread();                      pLSCPServer->StopThread();
116                        delete pLSCPServer;
117          // free all resources                  }
118          if (pMidiInThread) delete pMidiInThread;                  if (pSampler) delete pSampler;
119          if (pAudioThread)  delete pAudioThread;                  printf("LinuxSampler stopped due to SIGINT.\n");
120          if (pDiskThread)   delete pDiskThread;                  exit(EXIT_SUCCESS);
121          if (pGig)          delete pGig;              }
122          if (pRIFF)         delete pRIFF;              return;
123          if (pAudioIO)      delete pAudioIO;          }
124            case SIGSEGV:
125          printf("LinuxSampler stopped due to SIGINT\n");              std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
126          exit(EXIT_SUCCESS);              break;
127            case SIGBUS:
128                std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
129                break;
130            case SIGILL:
131                std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
132                break;
133            case SIGFPE:
134                std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
135                break;
136            case SIGUSR1:
137                std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
138                break;
139            case SIGUSR2:
140                std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
141                break;
142            default: { // this should never happen, as we register for the signals we want
143                std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
144                break;
145            }
146      }      }
147        signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
148        std::cerr << "Showing stack trace...\n" << std::flush;
149        StackTrace();
150        sleep(2);
151        std::cerr << "Killing LinuxSampler...\n" << std::flush;
152        kill_app(); // Use abort() if we want to generate a core dump.
153    }
154    
155    void kill_app() {
156        kill(main_thread, SIGKILL);
157  }  }
158    
159  void parse_options(int argc, char **argv) {  /*void parse_options(int argc, char **argv) {
160      int res;      int res;
161      int option_index = 0;      int option_index = 0;
162      static struct option long_options[] =      static struct option long_options[] =
# Line 206  void parse_options(int argc, char **argv Line 171  void parse_options(int argc, char **argv
171              {"alsaout",1,0,0},              {"alsaout",1,0,0},
172              {"jackout",1,0,0},              {"jackout",1,0,0},
173              {"samplerate",1,0,0},              {"samplerate",1,0,0},
174                {"server",0,0,0},
175              {"help",0,0,0},              {"help",0,0,0},
176              {0,0,0,0}              {0,0,0,0}
177          };          };
# Line 263  void parse_options(int argc, char **argv Line 229  void parse_options(int argc, char **argv
229                  case 9: // --samplerate                  case 9: // --samplerate
230                      samplerate = atoi(optarg);                      samplerate = atoi(optarg);
231                      break;                      break;
232                  case 10: // --help                  case 10: // --server
233                        run_server = true;
234                        break;
235                    case 11: // --help
236                      printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");                      printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
237                      printf("--gig              loads a Gigasampler instrument\n");                      printf("--gig              loads a Gigasampler instrument\n");
238                      printf("--dls              loads a DLS instrument\n");                      printf("--dls              loads a DLS instrument\n");
# Line 283  void parse_options(int argc, char **argv Line 252  void parse_options(int argc, char **argv
252                      printf("                   in case of stereo output)\n");                      printf("                   in case of stereo output)\n");
253                      printf("--samplerate       sets sample rate if supported by audio output system\n");                      printf("--samplerate       sets sample rate if supported by audio output system\n");
254                      printf("                   (e.g. 44100)\n");                      printf("                   (e.g. 44100)\n");
255                        printf("--server           launch network server for remote control\n");
256                      exit(EXIT_SUCCESS);                      exit(EXIT_SUCCESS);
257                      break;                      break;
258              }              }
259          }          }
260      }      }
261  }  }*/
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