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

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Revision 420 - (show annotations) (download)
Thu Mar 3 03:25:17 2005 UTC (14 years, 7 months ago) by schoenebeck
File size: 10315 byte(s)
* fixed some segfaults (which occured on EngineChannel destruction)
* InstrumentResourceManager: recache small samples if their current
  number of silence sample points are not sufficient enough for the used
  audio output device
* src/linuxsampler.cpp: voice / streams statistics on the console is back
  again (can be turned on with command line switch --statistics)

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 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 bool bPrintStatistics = false;
42 bool profile = false;
43 bool tune = true;
44
45 void parse_options(int argc, char **argv);
46 void signal_handler(int signal);
47 void kill_app();
48
49 int main(int argc, char **argv) {
50
51 // initialize the stack trace mechanism with our binary file
52 StackTraceInit(argv[0], -1);
53
54 main_thread = pthread_self();
55
56 // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
57 signal(SIGINT, signal_handler);
58
59 // register signal handler for all unusual signals
60 // (we will print the stack trace and exit)
61 struct sigaction sact;
62 sigemptyset(&sact.sa_mask);
63 sact.sa_flags = 0;
64 sact.sa_handler = signal_handler;
65 sigaction(SIGSEGV, &sact, NULL);
66 sigaction(SIGBUS, &sact, NULL);
67 sigaction(SIGILL, &sact, NULL);
68 sigaction(SIGFPE, &sact, NULL);
69 sigaction(SIGUSR1, &sact, NULL);
70 sigaction(SIGUSR2, &sact, NULL);
71
72 // parse and assign command line options
73 parse_options(argc, argv);
74
75 dmsg(1,("LinuxSampler %s\n", VERSION));
76 dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
77 dmsg(1,("Copyright (C) 2005 Christian Schoenebeck\n"));
78
79 if (tune)
80 {
81 // detect and print system / CPU specific features
82 String sFeatures;
83 Features::detect();
84 #if ARCH_X86
85 if (Features::supportsMMX()) sFeatures += " MMX";
86 if (Features::supportsSSE()) sFeatures += " SSE";
87 #endif // ARCH_X86
88 if (!sFeatures.size()) sFeatures = " None";
89 dmsg(1,("Detected features:%s\n",sFeatures.c_str()));
90 }
91
92 // create LinuxSampler instance
93 dmsg(1,("Creating Sampler..."));
94 pSampler = new Sampler;
95 dmsg(1,("OK\n"));
96
97 dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
98 dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
99
100 // start LSCP network server
101 dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
102 pLSCPServer = new LSCPServer(pSampler);
103 pLSCPServer->StartThread();
104 pLSCPServer->WaitUntilInitialized();
105 dmsg(1,("OK\n"));
106
107 if (profile)
108 {
109 dmsg(1,("Calibrating profiler..."));
110 gig::Profiler::Calibrate();
111 gig::Profiler::Reset();
112 dmsg(1,("OK\n"));
113 }
114
115 printf("LinuxSampler initialization completed.\n");
116
117 std::list<LSCPEvent::event_t> rtEvents;
118 rtEvents.push_back(LSCPEvent::event_voice_count);
119 rtEvents.push_back(LSCPEvent::event_stream_count);
120 rtEvents.push_back(LSCPEvent::event_buffer_fill);
121
122 while (true) {
123 if (bPrintStatistics) {
124 std::set<Engine*> engines = EngineFactory::EngineInstances();
125 std::set<Engine*>::iterator itEngine = engines.begin();
126 for (int i = 0; itEngine != engines.end(); itEngine++, i++) {
127 Engine* pEngine = *itEngine;
128 printf("Engine %d) Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d)\n", i,
129 pEngine->VoiceCount(), pEngine->VoiceCountMax(),
130 pEngine->DiskStreamCount(), pEngine->DiskStreamCountMax()
131 );
132 fflush(stdout);
133 }
134 }
135
136 sleep(1);
137 if (profile)
138 {
139 unsigned int samplingFreq = 48000; //FIXME: hardcoded for now
140 unsigned int bv = gig::Profiler::GetBogoVoices(samplingFreq);
141 if (bv != 0)
142 {
143 printf(" BogoVoices: %i \r", bv);
144 fflush(stdout);
145 }
146 }
147
148 if (LSCPServer::EventSubscribers(rtEvents))
149 {
150 LSCPServer::LockRTNotify();
151 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
152 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
153 for (; iter != channels.end(); iter++) {
154 SamplerChannel* pSamplerChannel = iter->second;
155 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
156 if (!pEngineChannel) continue;
157 Engine* pEngine = pEngineChannel->GetEngine();
158 if (!pEngine) continue;
159 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_voice_count, iter->first, pEngine->VoiceCount()));
160 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_stream_count, iter->first, pEngine->DiskStreamCount()));
161 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_buffer_fill, iter->first, pEngine->DiskStreamBufferFillPercentage()));
162 }
163 LSCPServer::UnlockRTNotify();
164 }
165
166 }
167
168 return EXIT_SUCCESS;
169 }
170
171 void signal_handler(int iSignal) {
172 switch (iSignal) {
173 case SIGINT: {
174 if (pthread_equal(pthread_self(), main_thread)) {
175 if (pLSCPServer) {
176 pLSCPServer->StopThread();
177 delete pLSCPServer;
178 }
179 if (pSampler) delete pSampler;
180 printf("LinuxSampler stopped due to SIGINT.\n");
181 exit(EXIT_SUCCESS);
182 }
183 return;
184 }
185 case SIGSEGV:
186 std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
187 break;
188 case SIGBUS:
189 std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
190 break;
191 case SIGILL:
192 std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
193 break;
194 case SIGFPE:
195 std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
196 break;
197 case SIGUSR1:
198 std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
199 break;
200 case SIGUSR2:
201 std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
202 break;
203 default: { // this should never happen, as we register for the signals we want
204 std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
205 break;
206 }
207 }
208 signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
209 std::cerr << "Showing stack trace...\n" << std::flush;
210 StackTrace();
211 sleep(2);
212 std::cerr << "Killing LinuxSampler...\n" << std::flush;
213 kill_app(); // Use abort() if we want to generate a core dump.
214 }
215
216 void kill_app() {
217 kill(main_thread, SIGKILL);
218 }
219
220 void parse_options(int argc, char **argv) {
221 int res;
222 int option_index = 0;
223 static struct option long_options[] =
224 {
225 {"help",0,0,0},
226 {"version",0,0,0},
227 {"profile",0,0,0},
228 {"no-tune",0,0,0},
229 {"statistics",0,0,0},
230 {0,0,0,0}
231 };
232
233 while (true) {
234 /*
235 Stephane Letz : letz@grame.fr
236 getopt_long_only does not exist on OSX : replaced by getopt_long for now.
237 */
238 res = getopt_long(argc, argv, "", long_options, &option_index);
239 if(res == -1) break;
240 if (res == 0) {
241 switch(option_index) {
242 case 0: // --help
243 printf("usage: linuxsampler [OPTIONS]\n\n");
244 printf("--help prints this message\n");
245 printf("--version prints version information\n");
246 printf("--profile profile synthesis algorithms\n");
247 printf("--no-tune disable assembly optimization\n");
248 printf("--statistics prints periodically statistics\n");
249 exit(EXIT_SUCCESS);
250 break;
251 case 1: // --version
252 printf("LinuxSampler %s\n", VERSION);
253 exit(EXIT_SUCCESS);
254 break;
255 case 2: // --profile
256 profile = true;
257 break;
258 case 3: // --no-tune
259 tune = false;
260 break;
261 case 4: // --statistics
262 bPrintStatistics = true;
263 break;
264 }
265 }
266 }
267 }

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