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

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Revision 770 - (show annotations) (download)
Sun Sep 11 15:56:29 2005 UTC (18 years, 6 months ago) by schoenebeck
File size: 11348 byte(s)
* synthesis core optimizations

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

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