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

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Revision 319 - (show annotations) (download)
Mon Dec 13 00:46:42 2004 UTC (15 years, 1 month ago) by schoenebeck
File size: 11492 byte(s)
* introduced 'synthesis mode' to reduce the amount of code and conditionals
  for the current synthesis case in the main synthesis loop
* support for MMX and SSE(1) in the core synthesis algorithms (CPU feature
  detection at runtime, only x86 so far)

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * *
7 * 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 *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
11 * *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
16 * *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the Free Software *
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20 * MA 02111-1307 USA *
21 ***************************************************************************/
22
23 #include <getopt.h>
24 #include <signal.h>
25
26 #include "Sampler.h"
27 #include "drivers/midi/MidiInputDeviceFactory.h"
28 #include "drivers/audio/AudioOutputDeviceFactory.h"
29 #include "network/lscpserver.h"
30 #include "common/stacktrace.h"
31 #include "common/Features.h"
32
33 using namespace LinuxSampler;
34
35 Sampler* pSampler = NULL;
36 LSCPServer* pLSCPServer = NULL;
37 pthread_t main_thread;
38
39 void parse_options(int argc, char **argv);
40 void signal_handler(int signal);
41 void kill_app();
42
43 int main(int argc, char **argv) {
44
45 // initialize the stack trace mechanism with our binary file
46 StackTraceInit(argv[0], -1);
47
48 main_thread = pthread_self();
49
50 // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
51 signal(SIGINT, signal_handler);
52
53 // register signal handler for all unusual signals
54 // (we will print the stack trace and exit)
55 struct sigaction sact;
56 sigemptyset(&sact.sa_mask);
57 sact.sa_flags = 0;
58 sact.sa_handler = signal_handler;
59 sigaction(SIGSEGV, &sact, NULL);
60 sigaction(SIGBUS, &sact, NULL);
61 sigaction(SIGILL, &sact, NULL);
62 sigaction(SIGFPE, &sact, NULL);
63 sigaction(SIGUSR1, &sact, NULL);
64 sigaction(SIGUSR2, &sact, NULL);
65
66 // parse and assign command line options
67 //parse_options(argc, argv);
68
69 dmsg(1,("LinuxSampler %s\n", VERSION));
70 dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
71
72 // detect and print system / CPU specific features
73 String sFeatures;
74 Features::detect();
75 #if ARCH_X86
76 if (Features::supportsMMX()) sFeatures += " MMX";
77 if (Features::supportsSSE()) sFeatures += " SSE";
78 #endif // ARCH_X86
79 if (!sFeatures.size()) sFeatures = " None";
80 dmsg(1,("Detected features:%s\n",sFeatures.c_str()));
81
82 // create LinuxSampler instance
83 dmsg(1,("Creating Sampler..."));
84 pSampler = new Sampler;
85 dmsg(1,("OK\n"));
86
87 dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
88 dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
89
90 // start LSCP network server
91 dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
92 pLSCPServer = new LSCPServer(pSampler);
93 pLSCPServer->StartThread();
94 pLSCPServer->WaitUntilInitialized();
95 dmsg(1,("OK\n"));
96
97 printf("LinuxSampler initialization completed.\n");
98
99 while(true) {
100 /*printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
101 pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
102 pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
103 fflush(stdout);*/
104 usleep(500000);
105 }
106
107 return EXIT_SUCCESS;
108 }
109
110 void signal_handler(int iSignal) {
111 switch (iSignal) {
112 case SIGINT: {
113 if (pthread_equal(pthread_self(), main_thread)) {
114 if (pLSCPServer) {
115 pLSCPServer->StopThread();
116 delete pLSCPServer;
117 }
118 if (pSampler) delete pSampler;
119 printf("LinuxSampler stopped due to SIGINT.\n");
120 exit(EXIT_SUCCESS);
121 }
122 return;
123 }
124 case SIGSEGV:
125 std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
126 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) {
160 int res;
161 int option_index = 0;
162 static struct option long_options[] =
163 {
164 {"numfragments",1,0,0},
165 {"fragmentsize",1,0,0},
166 {"volume",1,0,0},
167 {"dls",0,0,0},
168 {"gig",0,0,0},
169 {"instrument",1,0,0},
170 {"inputclient",1,0,0},
171 {"alsaout",1,0,0},
172 {"jackout",1,0,0},
173 {"samplerate",1,0,0},
174 {"server",0,0,0},
175 {"help",0,0,0},
176 {0,0,0,0}
177 };
178
179 while (true) {
180 res = getopt_long_only(argc, argv, "", long_options, &option_index);
181 if(res == -1) break;
182 if (res == 0) {
183 switch(option_index) {
184 case 0: // --numfragments
185 num_fragments = atoi(optarg);
186 break;
187 case 1: // --fragmentsize
188 fragmentsize = atoi(optarg);
189 break;
190 case 2: // --volume
191 volume = atof(optarg);
192 break;
193 case 3: // --dls
194 patch_format = patch_format_dls;
195 break;
196 case 4: // --gig
197 patch_format = patch_format_gig;
198 break;
199 case 5: // --instrument
200 instrument_index = atoi(optarg);
201 break;
202 case 6: // --inputclient
203 input_client = optarg;
204 break;
205 case 7: // --alsaout
206 alsaout = optarg;
207 use_jack = false; // If this option is specified do not connect to jack
208 break;
209 case 8: { // --jackout
210 try {
211 String arg(optarg);
212 // remove outer apostrophes
213 arg = arg.substr(arg.find('\'') + 1, arg.rfind('\'') - (arg.find('\'') + 1));
214 // split in two arguments
215 jack_playback[0] = arg.substr(0, arg.find("\' "));
216 jack_playback[1] = arg.substr(arg.find("\' ") + 2, arg.size() - (arg.find("\' ") + 2));
217 // remove inner apostrophes
218 jack_playback[0] = jack_playback[0].substr(0, jack_playback[0].find('\''));
219 jack_playback[1] = jack_playback[1].substr(jack_playback[1].find('\'') + 1, jack_playback[1].size() - jack_playback[1].find('\''));
220 // this is the default but set it up anyway in case alsa_card was also used.
221 use_jack = true;
222 }
223 catch (...) {
224 fprintf(stderr, "Invalid argument '%s' for parameter --jackout\n", optarg);
225 exit(EXIT_FAILURE);
226 }
227 break;
228 }
229 case 9: // --samplerate
230 samplerate = atoi(optarg);
231 break;
232 case 10: // --server
233 run_server = true;
234 break;
235 case 11: // --help
236 printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
237 printf("--gig loads a Gigasampler instrument\n");
238 printf("--dls loads a DLS instrument\n");
239 printf("--instrument index of the instrument in the instrument file if it\n");
240 printf(" contains more than one (default: 0)\n");
241 printf("--numfragments sets the number of audio fragments\n");
242 printf("--fragmentsize sets the fragment size\n");
243 printf("--volume sets global volume gain factor (a value > 1.0 means\n");
244 printf(" amplification, a value < 1.0 means attenuation,\n");
245 printf(" default: 0.25)\n");
246 printf("--inputclient connects to an Alsa sequencer input client on startup\n");
247 printf(" (e.g. 64:0 to connect to a client with ID 64 and port 0)\n");
248 printf("--alsaout connects to the given Alsa sound device on startup\n");
249 printf(" (e.g. 0,0 to connect to hw:0,0 or plughw:0,0)\n");
250 printf("--jackout connects to the given Jack playback ports on startup\n");
251 printf(" (e.g. \"\'alsa_pcm:playback_1\' \'alsa_pcm:playback_2\'\"\n");
252 printf(" in case of stereo output)\n");
253 printf("--samplerate sets sample rate if supported by audio output system\n");
254 printf(" (e.g. 44100)\n");
255 printf("--server launch network server for remote control\n");
256 exit(EXIT_SUCCESS);
257 break;
258 }
259 }
260 }
261 }*/

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