trunk/src/linuxsampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and 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 "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 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"));

    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)
    {
      /*printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
            pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
            pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
      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;
                      Engine* pEngine = pSamplerChannel->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},
            {0,0,0,0}
        };

    while (true) {
        res = getopt_long_only(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");
                    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;
            }
        }
    }
}
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	9	* *
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	schoenebeck	53	#include "Sampler.h"
27	schoenebeck	207	#include "drivers/midi/MidiInputDeviceFactory.h"
28	schoenebeck	203	#include "drivers/audio/AudioOutputDeviceFactory.h"
29	senkov	325	#include "engines/gig/Profiler.h"
30	schoenebeck	35	#include "network/lscpserver.h"
31	schoenebeck	271	#include "common/stacktrace.h"
32	schoenebeck	319	#include "common/Features.h"
33	schoenebeck	9
34	schoenebeck	53	using namespace LinuxSampler;
35
36	schoenebeck	211	Sampler* pSampler = NULL;
37			LSCPServer* pLSCPServer = NULL;
38	schoenebeck	271	pthread_t main_thread;
39	senkov	325	bool profile = false;
40			bool tune = true;
41	schoenebeck	9
42			void parse_options(int argc, char **argv);
43			void signal_handler(int signal);
44	schoenebeck	271	void kill_app();
45	schoenebeck	9
46			int main(int argc, char **argv) {
47
48	schoenebeck	271	// initialize the stack trace mechanism with our binary file
49			StackTraceInit(argv[0], -1);
50
51			main_thread = pthread_self();
52
53	schoenebeck	9	// setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
54			signal(SIGINT, signal_handler);
55
56	schoenebeck	271	// register signal handler for all unusual signals
57			// (we will print the stack trace and exit)
58			struct sigaction sact;
59			sigemptyset(&sact.sa_mask);
60			sact.sa_flags = 0;
61			sact.sa_handler = signal_handler;
62			sigaction(SIGSEGV, &sact, NULL);
63			sigaction(SIGBUS, &sact, NULL);
64			sigaction(SIGILL, &sact, NULL);
65			sigaction(SIGFPE, &sact, NULL);
66			sigaction(SIGUSR1, &sact, NULL);
67			sigaction(SIGUSR2, &sact, NULL);
68
69	schoenebeck	9	// parse and assign command line options
70	senkov	325	parse_options(argc, argv);
71	schoenebeck	9
72	schoenebeck	207	dmsg(1,("LinuxSampler %s\n", VERSION));
73			dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
74	schoenebeck	123
75	senkov	325	if (tune)
76			{
77			// detect and print system / CPU specific features
78			String sFeatures;
79			Features::detect();
80			#if ARCH_X86
81			if (Features::supportsMMX()) sFeatures += " MMX";
82			if (Features::supportsSSE()) sFeatures += " SSE";
83			#endif // ARCH_X86
84			if (!sFeatures.size()) sFeatures = " None";
85			dmsg(1,("Detected features:%s\n",sFeatures.c_str()));
86			}
87	schoenebeck	319
88	schoenebeck	53	// create LinuxSampler instance
89	schoenebeck	123	dmsg(1,("Creating Sampler..."));
90	schoenebeck	53	pSampler = new Sampler;
91	schoenebeck	123	dmsg(1,("OK\n"));
92	schoenebeck	53
93	schoenebeck	207	dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
94	schoenebeck	123	dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
95
96	schoenebeck	53	// start LSCP network server
97	schoenebeck	214	dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
98	schoenebeck	53	pLSCPServer = new LSCPServer(pSampler);
99			pLSCPServer->StartThread();
100	schoenebeck	211	pLSCPServer->WaitUntilInitialized();
101	schoenebeck	12	dmsg(1,("OK\n"));
102	schoenebeck	9
103	senkov	325	if (profile)
104			{
105			dmsg(1,("Calibrating profiler..."));
106			gig::Profiler::Calibrate();
107			gig::Profiler::Reset();
108			dmsg(1,("OK\n"));
109			}
110
111	schoenebeck	9	printf("LinuxSampler initialization completed.\n");
112
113	senkov	360	std::list<LSCPEvent::event_t> rtEvents;
114			rtEvents.push_back(LSCPEvent::event_voice_count);
115			rtEvents.push_back(LSCPEvent::event_stream_count);
116			rtEvents.push_back(LSCPEvent::event_buffer_fill);
117
118			while(true)
119			{
120	schoenebeck	53	/*printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
121	schoenebeck	35	pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
122			pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
123	schoenebeck	53	fflush(stdout);*/
124	senkov	325	sleep(1);
125			if (profile)
126			{
127			unsigned int samplingFreq = 48000; //FIXME: hardcoded for now
128			unsigned int bv = gig::Profiler::GetBogoVoices(samplingFreq);
129			if (bv != 0)
130			{
131			printf(" BogoVoices: %i \r", bv);
132			fflush(stdout);
133			}
134			}
135	senkov	360
136			if (LSCPServer::EventSubscribers(rtEvents))
137			{
138			LSCPServer::LockRTNotify();
139			std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
140			std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
141			for (; iter != channels.end(); iter++) {
142			SamplerChannel* pSamplerChannel = iter->second;
143			Engine* pEngine = pSamplerChannel->GetEngine();
144			if (!pEngine) continue;
145			LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_voice_count, iter->first, pEngine->VoiceCount()));
146			LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_stream_count, iter->first, pEngine->DiskStreamCount()));
147			LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_buffer_fill, iter->first, pEngine->DiskStreamBufferFillPercentage()));
148			}
149			LSCPServer::UnlockRTNotify();
150			}
151
152	senoner	10	}
153
154	schoenebeck	9	return EXIT_SUCCESS;
155			}
156
157	schoenebeck	271	void signal_handler(int iSignal) {
158			switch (iSignal) {
159			case SIGINT: {
160			if (pthread_equal(pthread_self(), main_thread)) {
161			if (pLSCPServer) {
162			pLSCPServer->StopThread();
163			delete pLSCPServer;
164			}
165			if (pSampler) delete pSampler;
166			printf("LinuxSampler stopped due to SIGINT.\n");
167			exit(EXIT_SUCCESS);
168			}
169			return;
170	schoenebeck	53	}
171	schoenebeck	271	case SIGSEGV:
172			std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
173			break;
174			case SIGBUS:
175			std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
176			break;
177			case SIGILL:
178			std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
179			break;
180			case SIGFPE:
181			std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
182			break;
183			case SIGUSR1:
184			std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
185			break;
186			case SIGUSR2:
187			std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
188			break;
189			default: { // this should never happen, as we register for the signals we want
190			std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
191			break;
192			}
193	schoenebeck	9	}
194	schoenebeck	271	signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
195			std::cerr << "Showing stack trace...\n" << std::flush;
196			StackTrace();
197			sleep(2);
198			std::cerr << "Killing LinuxSampler...\n" << std::flush;
199			kill_app(); // Use abort() if we want to generate a core dump.
200	schoenebeck	9	}
201
202	schoenebeck	271	void kill_app() {
203			kill(main_thread, SIGKILL);
204			}
205
206	senkov	325	void parse_options(int argc, char **argv) {
207	schoenebeck	9	int res;
208			int option_index = 0;
209			static struct option long_options[] =
210			{
211			{"help",0,0,0},
212	senkov	325	{"version",0,0,0},
213			{"profile",0,0,0},
214			{"no-tune",0,0,0},
215	schoenebeck	9	{0,0,0,0}
216			};
217
218			while (true) {
219			res = getopt_long_only(argc, argv, "", long_options, &option_index);
220			if(res == -1) break;
221			if (res == 0) {
222			switch(option_index) {
223	senkov	325	case 0: // --help
224			printf("usage: linuxsampler [OPTIONS]\n\n");
225			printf("--help prints this message\n");
226			printf("--version prints version information\n");
227			printf("--profile profile synthesis algorithms\n");
228			printf("--no-tune disable assembly optimization\n");
229			exit(EXIT_SUCCESS);
230	schoenebeck	9	break;
231	senkov	325	case 1: // --version
232	schoenebeck	328	printf("LinuxSampler %s\n", VERSION);
233			exit(EXIT_SUCCESS);
234	schoenebeck	9	break;
235	senkov	325	case 2: // --profile
236			profile = true;
237	schoenebeck	20	break;
238	senkov	325	case 3: // --no-tune
239			tune = false;
240	schoenebeck	9	break;
241			}
242			}
243			}
244	senkov	325	}