/[svn]/linuxsampler/trunk/src/linuxsampler.cpp
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Annotation of /linuxsampler/trunk/src/linuxsampler.cpp

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Revision 1212 - (hide annotations) (download)
Tue May 29 23:59:36 2007 UTC (16 years, 10 months ago) by schoenebeck
File size: 14627 byte(s)
* added highly experimental support for on-the-fly instrument editing
  within the sampler's process (by using instrument editor plugins),
  you'll notice the new "Registered instrument editors:" message on
  startup, the plugin path can be overridden at compile time with
  ./configure --enable-plugin-dir=/some/dir
* added a new LSCP command "EDIT INSTRUMENT <sampler-channel>" to spawn
  a matching instrument editor for the instrument on the given sampler
  channel (LSCP command syntax might be subject to change soon)
* config.h is not going to be installed along with liblinuxsampler's
  API header files anymore (not necessary anymore)
* take care of $(DESTDIR) when creating the instruments DB on 'make
  install' rule (needed for packaging and cross compilation)
* bumped version to 0.4.0.5cvs

1 schoenebeck 9 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5 capela 1012 * Copyright (C) 2003-2004 by Benno Senoner and Christian Schoenebeck *
6     * Copyright (C) 2005-2007 Christian Schoenebeck *
7 schoenebeck 9 * *
8     * This program is free software; you can redistribute it and/or modify *
9     * 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 *
11     * (at your option) any later version. *
12     * *
13     * This program is distributed in the hope that it will be useful, *
14     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16     * GNU General Public License for more details. *
17     * *
18     * You should have received a copy of the GNU General Public License *
19     * along with this program; if not, write to the Free Software *
20     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #include <getopt.h>
25     #include <signal.h>
26    
27 schoenebeck 53 #include "Sampler.h"
28 schoenebeck 420 #include "engines/EngineFactory.h"
29 schoenebeck 1212 #include "engines/InstrumentEditorFactory.h"
30 schoenebeck 207 #include "drivers/midi/MidiInputDeviceFactory.h"
31 schoenebeck 203 #include "drivers/audio/AudioOutputDeviceFactory.h"
32 senkov 325 #include "engines/gig/Profiler.h"
33 schoenebeck 35 #include "network/lscpserver.h"
34 schoenebeck 271 #include "common/stacktrace.h"
35 schoenebeck 319 #include "common/Features.h"
36 schoenebeck 9
37 schoenebeck 53 using namespace LinuxSampler;
38    
39 schoenebeck 211 Sampler* pSampler = NULL;
40     LSCPServer* pLSCPServer = NULL;
41 schoenebeck 271 pthread_t main_thread;
42 wylder 816 pid_t main_pid;
43 schoenebeck 420 bool bPrintStatistics = false;
44 senkov 325 bool profile = false;
45     bool tune = true;
46 senkov 667 unsigned long int lscp_addr;
47     unsigned short int lscp_port;
48 schoenebeck 9
49     void parse_options(int argc, char **argv);
50     void signal_handler(int signal);
51 schoenebeck 271 void kill_app();
52 schoenebeck 9
53     int main(int argc, char **argv) {
54    
55 schoenebeck 271 // initialize the stack trace mechanism with our binary file
56     StackTraceInit(argv[0], -1);
57    
58 wylder 816 main_pid = getpid();
59 schoenebeck 271 main_thread = pthread_self();
60    
61 schoenebeck 9 // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
62     signal(SIGINT, signal_handler);
63    
64 schoenebeck 271 // register signal handler for all unusual signals
65     // (we will print the stack trace and exit)
66     struct sigaction sact;
67     sigemptyset(&sact.sa_mask);
68     sact.sa_flags = 0;
69     sact.sa_handler = signal_handler;
70     sigaction(SIGSEGV, &sact, NULL);
71     sigaction(SIGBUS, &sact, NULL);
72     sigaction(SIGILL, &sact, NULL);
73     sigaction(SIGFPE, &sact, NULL);
74     sigaction(SIGUSR1, &sact, NULL);
75     sigaction(SIGUSR2, &sact, NULL);
76    
77 senkov 667 lscp_addr = htonl(LSCP_ADDR);
78     lscp_port = htons(LSCP_PORT);
79    
80 schoenebeck 9 // parse and assign command line options
81 senkov 325 parse_options(argc, argv);
82 schoenebeck 9
83 schoenebeck 207 dmsg(1,("LinuxSampler %s\n", VERSION));
84 capela 1012 dmsg(1,("Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck\n"));
85     dmsg(1,("Copyright (C) 2005-2007 Christian Schoenebeck\n"));
86 schoenebeck 123
87 schoenebeck 579 if (tune) {
88 persson 425 // detect and print system / CPU specific features
89     Features::detect();
90 schoenebeck 579 dmsg(1,("Detected features: %s\n", Features::featuresAsString().c_str()));
91     // prevent slow denormal FPU modes
92     Features::enableDenormalsAreZeroMode();
93 senkov 325 }
94 schoenebeck 319
95 schoenebeck 53 // create LinuxSampler instance
96 schoenebeck 123 dmsg(1,("Creating Sampler..."));
97 schoenebeck 53 pSampler = new Sampler;
98 schoenebeck 123 dmsg(1,("OK\n"));
99 schoenebeck 53
100 schoenebeck 900 dmsg(1,("Registered sampler engines: %s\n", EngineFactory::AvailableEngineTypesAsString().c_str()));
101 schoenebeck 207 dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
102 schoenebeck 123 dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
103 schoenebeck 1212 dmsg(1,("Registered instrument editors: %s\n", InstrumentEditorFactory::AvailableEditorsAsString().c_str()));
104 schoenebeck 123
105 schoenebeck 53 // start LSCP network server
106 senkov 667 struct in_addr addr;
107     addr.s_addr = lscp_addr;
108     dmsg(1,("Starting LSCP network server (%s:%d)...", inet_ntoa(addr), ntohs(lscp_port)));
109     pLSCPServer = new LSCPServer(pSampler, lscp_addr, lscp_port);
110 schoenebeck 53 pLSCPServer->StartThread();
111 schoenebeck 211 pLSCPServer->WaitUntilInitialized();
112 schoenebeck 12 dmsg(1,("OK\n"));
113 schoenebeck 9
114 senkov 325 if (profile)
115     {
116 persson 425 dmsg(1,("Calibrating profiler..."));
117 iliev 1161 LinuxSampler::gig::Profiler::Calibrate();
118     LinuxSampler::gig::Profiler::Reset();
119     LinuxSampler::gig::Profiler::enable();
120 persson 425 dmsg(1,("OK\n"));
121 senkov 325 }
122    
123 schoenebeck 563 printf("LinuxSampler initialization completed. :-)\n\n");
124 schoenebeck 9
125 senkov 360 std::list<LSCPEvent::event_t> rtEvents;
126     rtEvents.push_back(LSCPEvent::event_voice_count);
127     rtEvents.push_back(LSCPEvent::event_stream_count);
128     rtEvents.push_back(LSCPEvent::event_buffer_fill);
129 iliev 778 rtEvents.push_back(LSCPEvent::event_total_voice_count);
130 senkov 360
131 schoenebeck 420 while (true) {
132     if (bPrintStatistics) {
133 persson 840 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
134 schoenebeck 420 std::set<Engine*>::iterator itEngine = engines.begin();
135     for (int i = 0; itEngine != engines.end(); itEngine++, i++) {
136     Engine* pEngine = *itEngine;
137     printf("Engine %d) Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d)\n", i,
138     pEngine->VoiceCount(), pEngine->VoiceCountMax(),
139     pEngine->DiskStreamCount(), pEngine->DiskStreamCountMax()
140     );
141     fflush(stdout);
142     }
143     }
144 persson 425
145 senkov 325 sleep(1);
146     if (profile)
147     {
148 persson 425 unsigned int samplingFreq = 48000; //FIXME: hardcoded for now
149 iliev 1161 unsigned int bv = LinuxSampler::gig::Profiler::GetBogoVoices(samplingFreq);
150 persson 425 if (bv != 0)
151     {
152     printf(" BogoVoices: %i \r", bv);
153     fflush(stdout);
154     }
155 senkov 325 }
156 persson 425
157 senkov 360 if (LSCPServer::EventSubscribers(rtEvents))
158     {
159 persson 425 LSCPServer::LockRTNotify();
160     std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
161     std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
162     for (; iter != channels.end(); iter++) {
163     SamplerChannel* pSamplerChannel = iter->second;
164     EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
165     if (!pEngineChannel) continue;
166     Engine* pEngine = pEngineChannel->GetEngine();
167     if (!pEngine) continue;
168 iliev 1130 pSampler->fireVoiceCountChanged(iter->first, pEngine->VoiceCount());
169     pSampler->fireStreamCountChanged(iter->first, pEngine->DiskStreamCount());
170     pSampler->fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
171     pSampler->fireTotalVoiceCountChanged(pSampler->GetVoiceCount());
172 persson 425 }
173     LSCPServer::UnlockRTNotify();
174 senkov 360 }
175    
176 senoner 10 }
177    
178 schoenebeck 9 return EXIT_SUCCESS;
179     }
180    
181 schoenebeck 271 void signal_handler(int iSignal) {
182     switch (iSignal) {
183     case SIGINT: {
184     if (pthread_equal(pthread_self(), main_thread)) {
185     if (pLSCPServer) {
186     pLSCPServer->StopThread();
187     delete pLSCPServer;
188     }
189     if (pSampler) delete pSampler;
190 iliev 1161 #if HAVE_SQLITE3
191     InstrumentsDb::Destroy();
192     #endif
193 schoenebeck 271 printf("LinuxSampler stopped due to SIGINT.\n");
194     exit(EXIT_SUCCESS);
195     }
196     return;
197 schoenebeck 53 }
198 schoenebeck 271 case SIGSEGV:
199     std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
200     break;
201     case SIGBUS:
202     std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
203     break;
204     case SIGILL:
205     std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
206     break;
207     case SIGFPE:
208     std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
209     break;
210     case SIGUSR1:
211     std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
212     break;
213     case SIGUSR2:
214     std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
215     break;
216     default: { // this should never happen, as we register for the signals we want
217     std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
218     break;
219     }
220 schoenebeck 9 }
221 schoenebeck 271 signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
222     std::cerr << "Showing stack trace...\n" << std::flush;
223     StackTrace();
224     sleep(2);
225     std::cerr << "Killing LinuxSampler...\n" << std::flush;
226     kill_app(); // Use abort() if we want to generate a core dump.
227 schoenebeck 9 }
228    
229 schoenebeck 271 void kill_app() {
230 wylder 816 kill(main_pid, SIGKILL);
231 schoenebeck 271 }
232    
233 senkov 325 void parse_options(int argc, char **argv) {
234 schoenebeck 9 int res;
235     int option_index = 0;
236     static struct option long_options[] =
237     {
238     {"help",0,0,0},
239 senkov 325 {"version",0,0,0},
240     {"profile",0,0,0},
241     {"no-tune",0,0,0},
242 schoenebeck 420 {"statistics",0,0,0},
243 iliev 1208 {"instruments-db-location",1,0,0},
244 iliev 1187 {"create-instruments-db",1,0,0},
245 senkov 667 {"lscp-addr",1,0,0},
246     {"lscp-port",1,0,0},
247 schoenebeck 9 {0,0,0,0}
248     };
249    
250     while (true) {
251 schoenebeck 361 /*
252     Stephane Letz : letz@grame.fr
253     getopt_long_only does not exist on OSX : replaced by getopt_long for now.
254     */
255     res = getopt_long(argc, argv, "", long_options, &option_index);
256 schoenebeck 9 if(res == -1) break;
257     if (res == 0) {
258     switch(option_index) {
259 senkov 325 case 0: // --help
260     printf("usage: linuxsampler [OPTIONS]\n\n");
261 iliev 1208 printf("--help prints this message\n");
262     printf("--version prints version information\n");
263     printf("--profile profile synthesis algorithms\n");
264     printf("--no-tune disable assembly optimization\n");
265     printf("--statistics periodically prints statistics\n");
266     printf("--lscp-addr set LSCP address (default: any)\n");
267     printf("--lscp-port set LSCP port (default: 8888)\n");
268     printf("--create-instruments-db creates an instruments DB\n");
269     printf("--instruments-db-location specifies the instruments DB file\n");
270 senkov 325 exit(EXIT_SUCCESS);
271 schoenebeck 9 break;
272 senkov 325 case 1: // --version
273 schoenebeck 328 printf("LinuxSampler %s\n", VERSION);
274     exit(EXIT_SUCCESS);
275 schoenebeck 9 break;
276 senkov 325 case 2: // --profile
277 persson 425 profile = true;
278 schoenebeck 20 break;
279 senkov 325 case 3: // --no-tune
280 persson 425 tune = false;
281 schoenebeck 9 break;
282 schoenebeck 420 case 4: // --statistics
283     bPrintStatistics = true;
284     break;
285 iliev 1208 case 5: // --instruments-db-location
286 iliev 1187 #if HAVE_SQLITE3
287     try {
288     if (optarg) {
289 iliev 1208 struct stat statBuf;
290     int res = stat(optarg, &statBuf);
291    
292     if (res) {
293     std::stringstream ss;
294     ss << "Fail to stat `" << optarg << "`: " << strerror(errno);
295     throw Exception(ss.str());
296     }
297    
298     if (!S_ISREG(statBuf.st_mode)) {
299     std::stringstream ss;
300     ss << "`" << optarg << "` is not a regular file";
301     throw Exception(ss.str());
302     }
303    
304     InstrumentsDb::GetInstrumentsDb()->SetDbFile(String(optarg));
305     }
306     } catch(Exception e) {
307     std::cerr << e.Message() << std::endl << std::endl;
308     return;
309     }
310    
311     return;
312     #else
313     std::cerr << "LinuxSampler was not build with ";
314     std::cerr << "instruments database support." <<std::endl;
315     return;
316     #endif
317     case 6: // --create-instruments-db
318     #if HAVE_SQLITE3
319     try {
320     if (optarg) {
321 iliev 1187 std::cout << "Creating instruments database..." << std::endl;
322     InstrumentsDb::CreateInstrumentsDb(String(optarg));
323     InstrumentsDb::Destroy();
324     std::cout << "Done" << std::endl;
325     }
326     } catch(Exception e) {
327     std::cerr << e.Message() << std::endl;
328     exit(EXIT_FAILURE);
329     return;
330     }
331    
332     exit(EXIT_SUCCESS);
333     return;
334     #else
335     std::cerr << "Failed to create the database. LinuxSampler was ";
336     std::cerr << "not build with instruments database support." <<std::endl;
337     exit(EXIT_FAILURE);
338     return;
339     #endif
340 iliev 1208 case 7: // --lscp-addr
341 iliev 1187 struct in_addr addr;
342     if (inet_aton(optarg, &addr) == 0)
343     printf("WARNING: Failed to parse lscp-addr argument, ignoring!\n");
344     else
345     lscp_addr = addr.s_addr;
346 senkov 667 break;
347 iliev 1208 case 8: // --lscp-port
348 iliev 1187 long unsigned int port = 0;
349     if ((sscanf(optarg, "%u", &port) != 1) || (port == 0) || (port > 65535))
350     printf("WARNING: Failed to parse lscp-port argument, ignoring!\n");
351     else
352     lscp_port = htons(port);
353 senkov 667 break;
354 schoenebeck 9 }
355     }
356     }
357 senkov 325 }

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