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

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Revision 1187 - (show annotations) (download)
Wed May 16 14:22:26 2007 UTC (12 years, 4 months ago) by iliev
File size: 12980 byte(s)
* updated instruments db support
* added transactions for improving the db performance
* added commands for copying and finding instruments and directories

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003-2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005-2007 Christian Schoenebeck *
7 * *
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 #include "Sampler.h"
28 #include "engines/EngineFactory.h"
29 #include "drivers/midi/MidiInputDeviceFactory.h"
30 #include "drivers/audio/AudioOutputDeviceFactory.h"
31 #include "engines/gig/Profiler.h"
32 #include "network/lscpserver.h"
33 #include "common/stacktrace.h"
34 #include "common/Features.h"
35
36 using namespace LinuxSampler;
37
38 Sampler* pSampler = NULL;
39 LSCPServer* pLSCPServer = NULL;
40 pthread_t main_thread;
41 pid_t main_pid;
42 bool bPrintStatistics = false;
43 bool profile = false;
44 bool tune = true;
45 unsigned long int lscp_addr;
46 unsigned short int lscp_port;
47
48 void parse_options(int argc, char **argv);
49 void signal_handler(int signal);
50 void kill_app();
51
52 int main(int argc, char **argv) {
53
54 // initialize the stack trace mechanism with our binary file
55 StackTraceInit(argv[0], -1);
56
57 main_pid = getpid();
58 main_thread = pthread_self();
59
60 // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
61 signal(SIGINT, signal_handler);
62
63 // register signal handler for all unusual signals
64 // (we will print the stack trace and exit)
65 struct sigaction sact;
66 sigemptyset(&sact.sa_mask);
67 sact.sa_flags = 0;
68 sact.sa_handler = signal_handler;
69 sigaction(SIGSEGV, &sact, NULL);
70 sigaction(SIGBUS, &sact, NULL);
71 sigaction(SIGILL, &sact, NULL);
72 sigaction(SIGFPE, &sact, NULL);
73 sigaction(SIGUSR1, &sact, NULL);
74 sigaction(SIGUSR2, &sact, NULL);
75
76 lscp_addr = htonl(LSCP_ADDR);
77 lscp_port = htons(LSCP_PORT);
78
79 // parse and assign command line options
80 parse_options(argc, argv);
81
82 dmsg(1,("LinuxSampler %s\n", VERSION));
83 dmsg(1,("Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck\n"));
84 dmsg(1,("Copyright (C) 2005-2007 Christian Schoenebeck\n"));
85
86 if (tune) {
87 // detect and print system / CPU specific features
88 Features::detect();
89 dmsg(1,("Detected features: %s\n", Features::featuresAsString().c_str()));
90 // prevent slow denormal FPU modes
91 Features::enableDenormalsAreZeroMode();
92 }
93
94 // create LinuxSampler instance
95 dmsg(1,("Creating Sampler..."));
96 pSampler = new Sampler;
97 dmsg(1,("OK\n"));
98
99 dmsg(1,("Registered sampler engines: %s\n", EngineFactory::AvailableEngineTypesAsString().c_str()));
100 dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
101 dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
102
103 // start LSCP network server
104 struct in_addr addr;
105 addr.s_addr = lscp_addr;
106 dmsg(1,("Starting LSCP network server (%s:%d)...", inet_ntoa(addr), ntohs(lscp_port)));
107 pLSCPServer = new LSCPServer(pSampler, lscp_addr, lscp_port);
108 pLSCPServer->StartThread();
109 pLSCPServer->WaitUntilInitialized();
110 dmsg(1,("OK\n"));
111
112 if (profile)
113 {
114 dmsg(1,("Calibrating profiler..."));
115 LinuxSampler::gig::Profiler::Calibrate();
116 LinuxSampler::gig::Profiler::Reset();
117 LinuxSampler::gig::Profiler::enable();
118 dmsg(1,("OK\n"));
119 }
120
121 printf("LinuxSampler initialization completed. :-)\n\n");
122
123 std::list<LSCPEvent::event_t> rtEvents;
124 rtEvents.push_back(LSCPEvent::event_voice_count);
125 rtEvents.push_back(LSCPEvent::event_stream_count);
126 rtEvents.push_back(LSCPEvent::event_buffer_fill);
127 rtEvents.push_back(LSCPEvent::event_total_voice_count);
128
129 while (true) {
130 if (bPrintStatistics) {
131 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
132 std::set<Engine*>::iterator itEngine = engines.begin();
133 for (int i = 0; itEngine != engines.end(); itEngine++, i++) {
134 Engine* pEngine = *itEngine;
135 printf("Engine %d) Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d)\n", i,
136 pEngine->VoiceCount(), pEngine->VoiceCountMax(),
137 pEngine->DiskStreamCount(), pEngine->DiskStreamCountMax()
138 );
139 fflush(stdout);
140 }
141 }
142
143 sleep(1);
144 if (profile)
145 {
146 unsigned int samplingFreq = 48000; //FIXME: hardcoded for now
147 unsigned int bv = LinuxSampler::gig::Profiler::GetBogoVoices(samplingFreq);
148 if (bv != 0)
149 {
150 printf(" BogoVoices: %i \r", bv);
151 fflush(stdout);
152 }
153 }
154
155 if (LSCPServer::EventSubscribers(rtEvents))
156 {
157 LSCPServer::LockRTNotify();
158 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
159 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
160 for (; iter != channels.end(); iter++) {
161 SamplerChannel* pSamplerChannel = iter->second;
162 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
163 if (!pEngineChannel) continue;
164 Engine* pEngine = pEngineChannel->GetEngine();
165 if (!pEngine) continue;
166 pSampler->fireVoiceCountChanged(iter->first, pEngine->VoiceCount());
167 pSampler->fireStreamCountChanged(iter->first, pEngine->DiskStreamCount());
168 pSampler->fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
169 pSampler->fireTotalVoiceCountChanged(pSampler->GetVoiceCount());
170 }
171 LSCPServer::UnlockRTNotify();
172 }
173
174 }
175
176 return EXIT_SUCCESS;
177 }
178
179 void signal_handler(int iSignal) {
180 switch (iSignal) {
181 case SIGINT: {
182 if (pthread_equal(pthread_self(), main_thread)) {
183 if (pLSCPServer) {
184 pLSCPServer->StopThread();
185 delete pLSCPServer;
186 }
187 if (pSampler) delete pSampler;
188 #if HAVE_SQLITE3
189 InstrumentsDb::Destroy();
190 #endif
191 printf("LinuxSampler stopped due to SIGINT.\n");
192 exit(EXIT_SUCCESS);
193 }
194 return;
195 }
196 case SIGSEGV:
197 std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
198 break;
199 case SIGBUS:
200 std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
201 break;
202 case SIGILL:
203 std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
204 break;
205 case SIGFPE:
206 std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
207 break;
208 case SIGUSR1:
209 std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
210 break;
211 case SIGUSR2:
212 std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
213 break;
214 default: { // this should never happen, as we register for the signals we want
215 std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
216 break;
217 }
218 }
219 signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
220 std::cerr << "Showing stack trace...\n" << std::flush;
221 StackTrace();
222 sleep(2);
223 std::cerr << "Killing LinuxSampler...\n" << std::flush;
224 kill_app(); // Use abort() if we want to generate a core dump.
225 }
226
227 void kill_app() {
228 kill(main_pid, SIGKILL);
229 }
230
231 void parse_options(int argc, char **argv) {
232 int res;
233 int option_index = 0;
234 static struct option long_options[] =
235 {
236 {"help",0,0,0},
237 {"version",0,0,0},
238 {"profile",0,0,0},
239 {"no-tune",0,0,0},
240 {"statistics",0,0,0},
241 {"create-instruments-db",1,0,0},
242 {"lscp-addr",1,0,0},
243 {"lscp-port",1,0,0},
244 {0,0,0,0}
245 };
246
247 while (true) {
248 /*
249 Stephane Letz : letz@grame.fr
250 getopt_long_only does not exist on OSX : replaced by getopt_long for now.
251 */
252 res = getopt_long(argc, argv, "", long_options, &option_index);
253 if(res == -1) break;
254 if (res == 0) {
255 switch(option_index) {
256 case 0: // --help
257 printf("usage: linuxsampler [OPTIONS]\n\n");
258 printf("--help prints this message\n");
259 printf("--version prints version information\n");
260 printf("--profile profile synthesis algorithms\n");
261 printf("--no-tune disable assembly optimization\n");
262 printf("--statistics periodically prints statistics\n");
263 printf("--lscp-addr set LSCP address (default: any)\n");
264 printf("--lscp-port set LSCP port (default: 8888)\n");
265 printf("--create-instruments-db creates an instruments DB\n");
266 exit(EXIT_SUCCESS);
267 break;
268 case 1: // --version
269 printf("LinuxSampler %s\n", VERSION);
270 exit(EXIT_SUCCESS);
271 break;
272 case 2: // --profile
273 profile = true;
274 break;
275 case 3: // --no-tune
276 tune = false;
277 break;
278 case 4: // --statistics
279 bPrintStatistics = true;
280 break;
281 case 5: // --create-instruments-db
282 #if HAVE_SQLITE3
283 try {
284 if (optarg) {
285 std::cout << "Creating instruments database..." << std::endl;
286 InstrumentsDb::CreateInstrumentsDb(String(optarg));
287 InstrumentsDb::Destroy();
288 std::cout << "Done" << std::endl;
289 }
290 } catch(Exception e) {
291 std::cerr << e.Message() << std::endl;
292 exit(EXIT_FAILURE);
293 return;
294 }
295
296 exit(EXIT_SUCCESS);
297 return;
298 #else
299 std::cerr << "Failed to create the database. LinuxSampler was ";
300 std::cerr << "not build with instruments database support." <<std::endl;
301 exit(EXIT_FAILURE);
302 return;
303 #endif
304 case 6: // --lscp-addr
305 struct in_addr addr;
306 if (inet_aton(optarg, &addr) == 0)
307 printf("WARNING: Failed to parse lscp-addr argument, ignoring!\n");
308 else
309 lscp_addr = addr.s_addr;
310 break;
311 case 7: // --lscp-port
312 long unsigned int port = 0;
313 if ((sscanf(optarg, "%u", &port) != 1) || (port == 0) || (port > 65535))
314 printf("WARNING: Failed to parse lscp-port argument, ignoring!\n");
315 else
316 lscp_port = htons(port);
317 break;
318 }
319 }
320 }
321 }

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