trunk/src/linuxsampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *   Copyright (C) 2005 Christian Schoenebeck                              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include <getopt.h>
#include <signal.h>

#include "Sampler.h"
#include "engines/EngineFactory.h"
#include "drivers/midi/MidiInputDeviceFactory.h"
#include "drivers/audio/AudioOutputDeviceFactory.h"
#include "engines/gig/Profiler.h"
#include "network/lscpserver.h"
#include "common/stacktrace.h"
#include "common/Features.h"

using namespace LinuxSampler;

Sampler*    pSampler    = NULL;
LSCPServer* pLSCPServer = NULL;
pthread_t   main_thread;
bool bPrintStatistics = false;
bool profile = false;
bool tune = true;

void parse_options(int argc, char **argv);
void signal_handler(int signal);
void kill_app();

int main(int argc, char **argv) {

    // initialize the stack trace mechanism with our binary file
    StackTraceInit(argv[0], -1);

    main_thread = pthread_self();

    // setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
    signal(SIGINT, signal_handler);

    // register signal handler for all unusual signals
    // (we will print the stack trace and exit)
    struct sigaction sact;
    sigemptyset(&sact.sa_mask);
    sact.sa_flags   = 0;
    sact.sa_handler = signal_handler;
    sigaction(SIGSEGV, &sact, NULL);
    sigaction(SIGBUS,  &sact, NULL);
    sigaction(SIGILL,  &sact, NULL);
    sigaction(SIGFPE,  &sact, NULL);
    sigaction(SIGUSR1, &sact, NULL);
    sigaction(SIGUSR2, &sact, NULL);

    // parse and assign command line options
    parse_options(argc, argv);

    dmsg(1,("LinuxSampler %s\n", VERSION));
    dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
    dmsg(1,("Copyright (C) 2005 Christian Schoenebeck\n"));

    if (tune)
    {
            // detect and print system / CPU specific features
            String sFeatures;
            Features::detect();
#if ARCH_X86
            if (Features::supportsMMX()) sFeatures += " MMX";
            if (Features::supportsSSE()) sFeatures += " SSE";
#endif // ARCH_X86
            if (!sFeatures.size()) sFeatures = " None";
            dmsg(1,("Detected features:%s\n",sFeatures.c_str()));
    }

    // create LinuxSampler instance
    dmsg(1,("Creating Sampler..."));
    pSampler = new Sampler;
    dmsg(1,("OK\n"));

    dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
    dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));

    // start LSCP network server
    dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
    pLSCPServer = new LSCPServer(pSampler);
    pLSCPServer->StartThread();
    pLSCPServer->WaitUntilInitialized();
    dmsg(1,("OK\n"));

    if (profile)
    {
            dmsg(1,("Calibrating profiler..."));
            gig::Profiler::Calibrate();
            gig::Profiler::Reset();
            dmsg(1,("OK\n"));
    }

    printf("LinuxSampler initialization completed.\n");

    std::list<LSCPEvent::event_t> rtEvents;
    rtEvents.push_back(LSCPEvent::event_voice_count);
    rtEvents.push_back(LSCPEvent::event_stream_count);
    rtEvents.push_back(LSCPEvent::event_buffer_fill);

    while (true) {
        if (bPrintStatistics) {
            std::set<Engine*> engines = EngineFactory::EngineInstances();
            std::set<Engine*>::iterator itEngine = engines.begin();
            for (int i = 0; itEngine != engines.end(); itEngine++, i++) {
                Engine* pEngine = *itEngine;
                printf("Engine %d) Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d)\n", i,
                    pEngine->VoiceCount(), pEngine->VoiceCountMax(),
                    pEngine->DiskStreamCount(), pEngine->DiskStreamCountMax()
                );
                fflush(stdout);
            }
        }
        
      sleep(1);
      if (profile)
      {
              unsigned int samplingFreq = 48000; //FIXME: hardcoded for now
              unsigned int bv = gig::Profiler::GetBogoVoices(samplingFreq);
              if (bv != 0)
              {
                      printf("       BogoVoices: %i         \r", bv);
                      fflush(stdout);
              }
      }
      
      if (LSCPServer::EventSubscribers(rtEvents))
      {
              LSCPServer::LockRTNotify();
              std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
              std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
              for (; iter != channels.end(); iter++) {
                      SamplerChannel* pSamplerChannel = iter->second;
                      EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
                      if (!pEngineChannel) continue;
                      Engine* pEngine = pEngineChannel->GetEngine();
                      if (!pEngine) continue;
                      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_voice_count, iter->first, pEngine->VoiceCount()));
                      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_stream_count, iter->first, pEngine->DiskStreamCount()));
                      LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_buffer_fill, iter->first, pEngine->DiskStreamBufferFillPercentage()));
              }
              LSCPServer::UnlockRTNotify();
      }

    }

    return EXIT_SUCCESS;
}

void signal_handler(int iSignal) {
    switch (iSignal) {
        case SIGINT: {
            if (pthread_equal(pthread_self(), main_thread)) {
                if (pLSCPServer) {
                    pLSCPServer->StopThread();
                    delete pLSCPServer;
                }
                if (pSampler) delete pSampler;
                printf("LinuxSampler stopped due to SIGINT.\n");
                exit(EXIT_SUCCESS);
            }
            return;
        }
        case SIGSEGV:
            std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
            break;
        case SIGBUS:
            std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
            break;
        case SIGILL:
            std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
            break;
        case SIGFPE:
            std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
            break;
        case SIGUSR1:
            std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
            break;
        case SIGUSR2:
            std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
            break;
        default: { // this should never happen, as we register for the signals we want
            std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
            break;
        }
    }
    signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
    std::cerr << "Showing stack trace...\n" << std::flush;
    StackTrace();
    sleep(2);
    std::cerr << "Killing LinuxSampler...\n" << std::flush;
    kill_app(); // Use abort() if we want to generate a core dump.
}

void kill_app() {
    kill(main_thread, SIGKILL);
}

void parse_options(int argc, char **argv) {
    int res;
    int option_index = 0;
    static struct option long_options[] =
        {
            {"help",0,0,0},
            {"version",0,0,0},
            {"profile",0,0,0},
            {"no-tune",0,0,0},
            {"statistics",0,0,0},
            {0,0,0,0}
        };

    while (true) {
        /*
          Stephane Letz : letz@grame.fr
          getopt_long_only does not exist on OSX : replaced by getopt_long for now.
        */
        res = getopt_long(argc, argv, "", long_options, &option_index);
        if(res == -1) break;
        if (res == 0) {
            switch(option_index) {
                case 0: // --help
                    printf("usage: linuxsampler [OPTIONS]\n\n");
                    printf("--help             prints this message\n");
                    printf("--version          prints version information\n");
                    printf("--profile          profile synthesis algorithms\n");
                    printf("--no-tune          disable assembly optimization\n");
                    printf("--statistics       prints periodically statistics\n");
                    exit(EXIT_SUCCESS);
                    break;
                case 1: // --version
                    printf("LinuxSampler %s\n", VERSION);
                    exit(EXIT_SUCCESS);
                    break;
                case 2: // --profile
                    profile = true;
                    break;
                case 3: // --no-tune
                    tune = false;
                    break;
                case 4: // --statistics
                    bPrintStatistics = true;
                    break;
            }
        }
    }
}
1	schoenebeck	9	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5	schoenebeck	61	* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6	schoenebeck	411	* Copyright (C) 2005 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	207	#include "drivers/midi/MidiInputDeviceFactory.h"
30	schoenebeck	203	#include "drivers/audio/AudioOutputDeviceFactory.h"
31	senkov	325	#include "engines/gig/Profiler.h"
32	schoenebeck	35	#include "network/lscpserver.h"
33	schoenebeck	271	#include "common/stacktrace.h"
34	schoenebeck	319	#include "common/Features.h"
35	schoenebeck	9
36	schoenebeck	53	using namespace LinuxSampler;
37
38	schoenebeck	211	Sampler* pSampler = NULL;
39			LSCPServer* pLSCPServer = NULL;
40	schoenebeck	271	pthread_t main_thread;
41	schoenebeck	420	bool bPrintStatistics = false;
42	senkov	325	bool profile = false;
43			bool tune = true;
44	schoenebeck	9
45			void parse_options(int argc, char **argv);
46			void signal_handler(int signal);
47	schoenebeck	271	void kill_app();
48	schoenebeck	9
49			int main(int argc, char **argv) {
50
51	schoenebeck	271	// initialize the stack trace mechanism with our binary file
52			StackTraceInit(argv[0], -1);
53
54			main_thread = pthread_self();
55
56	schoenebeck	9	// setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
57			signal(SIGINT, signal_handler);
58
59	schoenebeck	271	// 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	schoenebeck	9	// parse and assign command line options
73	senkov	325	parse_options(argc, argv);
74	schoenebeck	9
75	schoenebeck	207	dmsg(1,("LinuxSampler %s\n", VERSION));
76			dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
77	schoenebeck	411	dmsg(1,("Copyright (C) 2005 Christian Schoenebeck\n"));
78	schoenebeck	123
79	senkov	325	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	schoenebeck	319
92	schoenebeck	53	// create LinuxSampler instance
93	schoenebeck	123	dmsg(1,("Creating Sampler..."));
94	schoenebeck	53	pSampler = new Sampler;
95	schoenebeck	123	dmsg(1,("OK\n"));
96	schoenebeck	53
97	schoenebeck	207	dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
98	schoenebeck	123	dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
99
100	schoenebeck	53	// start LSCP network server
101	schoenebeck	214	dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
102	schoenebeck	53	pLSCPServer = new LSCPServer(pSampler);
103			pLSCPServer->StartThread();
104	schoenebeck	211	pLSCPServer->WaitUntilInitialized();
105	schoenebeck	12	dmsg(1,("OK\n"));
106	schoenebeck	9
107	senkov	325	if (profile)
108			{
109			dmsg(1,("Calibrating profiler..."));
110			gig::Profiler::Calibrate();
111			gig::Profiler::Reset();
112			dmsg(1,("OK\n"));
113			}
114
115	schoenebeck	9	printf("LinuxSampler initialization completed.\n");
116
117	senkov	360	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	schoenebeck	420	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	senkov	325	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	senkov	360
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	schoenebeck	411	EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
156			if (!pEngineChannel) continue;
157			Engine* pEngine = pEngineChannel->GetEngine();
158	senkov	360	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	senoner	10	}
167
168	schoenebeck	9	return EXIT_SUCCESS;
169			}
170
171	schoenebeck	271	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	schoenebeck	53	}
185	schoenebeck	271	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	schoenebeck	9	}
208	schoenebeck	271	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	schoenebeck	9	}
215
216	schoenebeck	271	void kill_app() {
217			kill(main_thread, SIGKILL);
218			}
219
220	senkov	325	void parse_options(int argc, char **argv) {
221	schoenebeck	9	int res;
222			int option_index = 0;
223			static struct option long_options[] =
224			{
225			{"help",0,0,0},
226	senkov	325	{"version",0,0,0},
227			{"profile",0,0,0},
228			{"no-tune",0,0,0},
229	schoenebeck	420	{"statistics",0,0,0},
230	schoenebeck	9	{0,0,0,0}
231			};
232
233			while (true) {
234	schoenebeck	361	/*
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	schoenebeck	9	if(res == -1) break;
240			if (res == 0) {
241			switch(option_index) {
242	senkov	325	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	schoenebeck	420	printf("--statistics prints periodically statistics\n");
249	senkov	325	exit(EXIT_SUCCESS);
250	schoenebeck	9	break;
251	senkov	325	case 1: // --version
252	schoenebeck	328	printf("LinuxSampler %s\n", VERSION);
253			exit(EXIT_SUCCESS);
254	schoenebeck	9	break;
255	senkov	325	case 2: // --profile
256			profile = true;
257	schoenebeck	20	break;
258	senkov	325	case 3: // --no-tune
259			tune = false;
260	schoenebeck	9	break;
261	schoenebeck	420	case 4: // --statistics
262			bPrintStatistics = true;
263			break;
264	schoenebeck	9	}
265			}
266			}
267	senkov	325	}