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 "network/lscpserver.h"
#include "common/stacktrace.h"

using namespace LinuxSampler;

Sampler*    pSampler    = NULL;
LSCPServer* pLSCPServer = NULL;
pthread_t   main_thread;

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"));

    // 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"));

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

    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);*/
      usleep(500000);
    }

    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[] =
        {
            {"numfragments",1,0,0},
            {"fragmentsize",1,0,0},
            {"volume",1,0,0},
            {"dls",0,0,0},
            {"gig",0,0,0},
            {"instrument",1,0,0},
            {"inputclient",1,0,0},
            {"alsaout",1,0,0},
            {"jackout",1,0,0},
            {"samplerate",1,0,0},
            {"server",0,0,0},
            {"help",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: // --numfragments
                    num_fragments = atoi(optarg);
                    break;
                case 1: // --fragmentsize
                    fragmentsize = atoi(optarg);
                    break;
                case 2: // --volume
                    volume = atof(optarg);
                    break;
                case 3: // --dls
                    patch_format = patch_format_dls;
                    break;
                case 4: // --gig
                    patch_format = patch_format_gig;
                    break;
                case 5: // --instrument
                    instrument_index = atoi(optarg);
                    break;
                case 6: // --inputclient
                    input_client = optarg;
                    break;
                case 7: // --alsaout
                    alsaout = optarg;
                    use_jack = false; // If this option is specified do not connect to jack
                    break;
                case 8: { // --jackout
                    try {
                        String arg(optarg);
                        // remove outer apostrophes
                        arg = arg.substr(arg.find('\'') + 1, arg.rfind('\'') - (arg.find('\'') + 1));
                        // split in two arguments
                        jack_playback[0] = arg.substr(0, arg.find("\' "));
                        jack_playback[1] = arg.substr(arg.find("\' ") + 2, arg.size() - (arg.find("\' ") + 2));
                        // remove inner apostrophes
                        jack_playback[0] = jack_playback[0].substr(0, jack_playback[0].find('\''));
                        jack_playback[1] = jack_playback[1].substr(jack_playback[1].find('\'') + 1, jack_playback[1].size() - jack_playback[1].find('\''));
                        // this is the default but set it up anyway in case alsa_card was also used.
                        use_jack = true;
                    }
                    catch (...) {
                        fprintf(stderr, "Invalid argument '%s' for parameter --jackout\n", optarg);
                        exit(EXIT_FAILURE);
                    }
                    break;
                }
                case 9: // --samplerate
                    samplerate = atoi(optarg);
                    break;
                case 10: // --server
                    run_server = true;
                    break;
                case 11: // --help
                    printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
                    printf("--gig              loads a Gigasampler instrument\n");
                    printf("--dls              loads a DLS instrument\n");
                    printf("--instrument       index of the instrument in the instrument file if it\n");
                    printf("                   contains more than one (default: 0)\n");
                    printf("--numfragments     sets the number of audio fragments\n");
                    printf("--fragmentsize     sets the fragment size\n");
                    printf("--volume           sets global volume gain factor (a value > 1.0 means\n");
                    printf("                   amplification, a value < 1.0 means attenuation,\n");
                    printf("                   default: 0.25)\n");
                    printf("--inputclient      connects to an Alsa sequencer input client on startup\n");
                    printf("                   (e.g. 64:0 to connect to a client with ID 64 and port 0)\n");
                    printf("--alsaout          connects to the given Alsa sound device on startup\n");
                    printf("                   (e.g. 0,0 to connect to hw:0,0 or plughw:0,0)\n");
                    printf("--jackout          connects to the given Jack playback ports on startup\n");
                    printf("                   (e.g. \"\'alsa_pcm:playback_1\' \'alsa_pcm:playback_2\'\"\n");
                    printf("                   in case of stereo output)\n");
                    printf("--samplerate       sets sample rate if supported by audio output system\n");
                    printf("                   (e.g. 44100)\n");
                    printf("--server           launch network server for remote control\n");
                    exit(EXIT_SUCCESS);
                    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	schoenebeck	35	#include "network/lscpserver.h"
30	schoenebeck	271	#include "common/stacktrace.h"
31	schoenebeck	9
32	schoenebeck	53	using namespace LinuxSampler;
33
34	schoenebeck	211	Sampler* pSampler = NULL;
35			LSCPServer* pLSCPServer = NULL;
36	schoenebeck	271	pthread_t main_thread;
37	schoenebeck	9
38			void parse_options(int argc, char **argv);
39			void signal_handler(int signal);
40	schoenebeck	271	void kill_app();
41	schoenebeck	9
42			int main(int argc, char **argv) {
43
44	schoenebeck	271	// initialize the stack trace mechanism with our binary file
45			StackTraceInit(argv[0], -1);
46
47			main_thread = pthread_self();
48
49	schoenebeck	9	// setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
50			signal(SIGINT, signal_handler);
51
52	schoenebeck	271	// register signal handler for all unusual signals
53			// (we will print the stack trace and exit)
54			struct sigaction sact;
55			sigemptyset(&sact.sa_mask);
56			sact.sa_flags = 0;
57			sact.sa_handler = signal_handler;
58			sigaction(SIGSEGV, &sact, NULL);
59			sigaction(SIGBUS, &sact, NULL);
60			sigaction(SIGILL, &sact, NULL);
61			sigaction(SIGFPE, &sact, NULL);
62			sigaction(SIGUSR1, &sact, NULL);
63			sigaction(SIGUSR2, &sact, NULL);
64
65	schoenebeck	9	// parse and assign command line options
66	schoenebeck	53	//parse_options(argc, argv);
67	schoenebeck	9
68	schoenebeck	207	dmsg(1,("LinuxSampler %s\n", VERSION));
69			dmsg(1,("Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck\n"));
70	schoenebeck	123
71	schoenebeck	53	// create LinuxSampler instance
72	schoenebeck	123	dmsg(1,("Creating Sampler..."));
73	schoenebeck	53	pSampler = new Sampler;
74	schoenebeck	123	dmsg(1,("OK\n"));
75	schoenebeck	53
76	schoenebeck	207	dmsg(1,("Registered MIDI input drivers: %s\n", MidiInputDeviceFactory::AvailableDriversAsString().c_str()));
77	schoenebeck	123	dmsg(1,("Registered audio output drivers: %s\n", AudioOutputDeviceFactory::AvailableDriversAsString().c_str()));
78
79	schoenebeck	53	// start LSCP network server
80	schoenebeck	214	dmsg(1,("Starting LSCP network server (on TCP port %d)...", LSCP_PORT));
81	schoenebeck	53	pLSCPServer = new LSCPServer(pSampler);
82			pLSCPServer->StartThread();
83	schoenebeck	211	pLSCPServer->WaitUntilInitialized();
84	schoenebeck	12	dmsg(1,("OK\n"));
85	schoenebeck	9
86			printf("LinuxSampler initialization completed.\n");
87
88	senoner	10	while(true) {
89	schoenebeck	53	/*printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
90	schoenebeck	35	pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
91			pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
92	schoenebeck	53	fflush(stdout);*/
93	senoner	10	usleep(500000);
94			}
95
96	schoenebeck	9	return EXIT_SUCCESS;
97			}
98
99	schoenebeck	271	void signal_handler(int iSignal) {
100			switch (iSignal) {
101			case SIGINT: {
102			if (pthread_equal(pthread_self(), main_thread)) {
103			if (pLSCPServer) {
104			pLSCPServer->StopThread();
105			delete pLSCPServer;
106			}
107			if (pSampler) delete pSampler;
108			printf("LinuxSampler stopped due to SIGINT.\n");
109			exit(EXIT_SUCCESS);
110			}
111			return;
112	schoenebeck	53	}
113	schoenebeck	271	case SIGSEGV:
114			std::cerr << ">>> FATAL ERROR: Segmentation fault (SIGSEGV) occured! <<<\n" << std::flush;
115			break;
116			case SIGBUS:
117			std::cerr << ">>> FATAL ERROR: Access to undefined portion of a memory object (SIGBUS) occured! <<<\n" << std::flush;
118			break;
119			case SIGILL:
120			std::cerr << ">>> FATAL ERROR: Illegal instruction (SIGILL) occured! <<<\n" << std::flush;
121			break;
122			case SIGFPE:
123			std::cerr << ">>> FATAL ERROR: Erroneous arithmetic operation (SIGFPE) occured! <<<\n" << std::flush;
124			break;
125			case SIGUSR1:
126			std::cerr << ">>> User defined signal 1 (SIGUSR1) received <<<\n" << std::flush;
127			break;
128			case SIGUSR2:
129			std::cerr << ">>> User defined signal 2 (SIGUSR2) received <<<\n" << std::flush;
130			break;
131			default: { // this should never happen, as we register for the signals we want
132			std::cerr << ">>> FATAL ERROR: Unknown signal received! <<<\n" << std::flush;
133			break;
134			}
135	schoenebeck	9	}
136	schoenebeck	271	signal(iSignal, SIG_DFL); // Reinstall default handler to prevent race conditions
137			std::cerr << "Showing stack trace...\n" << std::flush;
138			StackTrace();
139			sleep(2);
140			std::cerr << "Killing LinuxSampler...\n" << std::flush;
141			kill_app(); // Use abort() if we want to generate a core dump.
142	schoenebeck	9	}
143
144	schoenebeck	271	void kill_app() {
145			kill(main_thread, SIGKILL);
146			}
147
148	schoenebeck	53	/void parse_options(int argc, char *argv) {
149	schoenebeck	9	int res;
150			int option_index = 0;
151			static struct option long_options[] =
152			{
153			{"numfragments",1,0,0},
154			{"fragmentsize",1,0,0},
155	schoenebeck	20	{"volume",1,0,0},
156	schoenebeck	9	{"dls",0,0,0},
157			{"gig",0,0,0},
158	schoenebeck	20	{"instrument",1,0,0},
159			{"inputclient",1,0,0},
160	schoenebeck	33	{"alsaout",1,0,0},
161			{"jackout",1,0,0},
162			{"samplerate",1,0,0},
163	schoenebeck	35	{"server",0,0,0},
164	schoenebeck	9	{"help",0,0,0},
165			{0,0,0,0}
166			};
167
168			while (true) {
169			res = getopt_long_only(argc, argv, "", long_options, &option_index);
170			if(res == -1) break;
171			if (res == 0) {
172			switch(option_index) {
173	schoenebeck	33	case 0: // --numfragments
174	schoenebeck	9	num_fragments = atoi(optarg);
175			break;
176	schoenebeck	33	case 1: // --fragmentsize
177	schoenebeck	9	fragmentsize = atoi(optarg);
178			break;
179	schoenebeck	33	case 2: // --volume
180	schoenebeck	20	volume = atof(optarg);
181			break;
182	schoenebeck	33	case 3: // --dls
183	schoenebeck	9	patch_format = patch_format_dls;
184			break;
185	schoenebeck	33	case 4: // --gig
186	schoenebeck	9	patch_format = patch_format_gig;
187			break;
188	schoenebeck	33	case 5: // --instrument
189	schoenebeck	20	instrument_index = atoi(optarg);
190			break;
191	schoenebeck	33	case 6: // --inputclient
192	schoenebeck	20	input_client = optarg;
193			break;
194	schoenebeck	33	case 7: // --alsaout
195			alsaout = optarg;
196			use_jack = false; // If this option is specified do not connect to jack
197			break;
198			case 8: { // --jackout
199			try {
200			String arg(optarg);
201			// remove outer apostrophes
202			arg = arg.substr(arg.find('\'') + 1, arg.rfind('\'') - (arg.find('\'') + 1));
203			// split in two arguments
204			jack_playback[0] = arg.substr(0, arg.find("\' "));
205			jack_playback[1] = arg.substr(arg.find("\' ") + 2, arg.size() - (arg.find("\' ") + 2));
206			// remove inner apostrophes
207			jack_playback[0] = jack_playback[0].substr(0, jack_playback[0].find('\''));
208			jack_playback[1] = jack_playback[1].substr(jack_playback[1].find('\'') + 1, jack_playback[1].size() - jack_playback[1].find('\''));
209			// this is the default but set it up anyway in case alsa_card was also used.
210			use_jack = true;
211			}
212			catch (...) {
213			fprintf(stderr, "Invalid argument '%s' for parameter --jackout\n", optarg);
214			exit(EXIT_FAILURE);
215			}
216			break;
217			}
218			case 9: // --samplerate
219			samplerate = atoi(optarg);
220			break;
221	schoenebeck	35	case 10: // --server
222			run_server = true;
223			break;
224			case 11: // --help
225	schoenebeck	9	printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
226	schoenebeck	20	printf("--gig loads a Gigasampler instrument\n");
227			printf("--dls loads a DLS instrument\n");
228			printf("--instrument index of the instrument in the instrument file if it\n");
229			printf(" contains more than one (default: 0)\n");
230	schoenebeck	9	printf("--numfragments sets the number of audio fragments\n");
231			printf("--fragmentsize sets the fragment size\n");
232	schoenebeck	20	printf("--volume sets global volume gain factor (a value > 1.0 means\n");
233			printf(" amplification, a value < 1.0 means attenuation,\n");
234			printf(" default: 0.25)\n");
235			printf("--inputclient connects to an Alsa sequencer input client on startup\n");
236			printf(" (e.g. 64:0 to connect to a client with ID 64 and port 0)\n");
237	schoenebeck	33	printf("--alsaout connects to the given Alsa sound device on startup\n");
238			printf(" (e.g. 0,0 to connect to hw:0,0 or plughw:0,0)\n");
239			printf("--jackout connects to the given Jack playback ports on startup\n");
240			printf(" (e.g. \"\'alsa_pcm:playback_1\' \'alsa_pcm:playback_2\'\"\n");
241			printf(" in case of stereo output)\n");
242			printf("--samplerate sets sample rate if supported by audio output system\n");
243			printf(" (e.g. 44100)\n");
244	schoenebeck	35	printf("--server launch network server for remote control\n");
245	schoenebeck	33	exit(EXIT_SUCCESS);
246	schoenebeck	9	break;
247			}
248			}
249			}
250	schoenebeck	53	}*/