trunk/src/linuxsampler.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <signal.h>
#include <pthread.h>

#include <string>

#include "global.h"
#include "diskthread.h"
#include "audiothread.h"
#include "alsaio.h"
#include "jackio.h"
#include "midiin.h"
#include "stream.h"
#include "RIFF.h"
#include "gig.h"

#define AUDIO_CHANNELS          2     // stereo
#define AUDIO_FRAGMENTS         3     // 3 fragments, if it does not work set it to 2
#define AUDIO_FRAGMENTSIZE      512   // each fragment has 512 frames
#define AUDIO_SAMPLERATE        44100 // Hz

enum patch_format_t {
    patch_format_unknown,
    patch_format_gig,
    patch_format_dls
} patch_format;

AudioIO*         pAudioIO;
DiskThread*      pDiskThread;
AudioThread*     pAudioThread;
MidiIn*          pMidiInThread;
RIFF::File*      pRIFF;
gig::File*       pGig;
gig::Instrument* pInstrument;
uint             instrument_index;
double           volume;
int              num_fragments;
int              fragmentsize;
std::string      input_client;
pthread_t        signalhandlerthread;

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

int main(int argc, char **argv) {
    pAudioIO = NULL;
    pRIFF    = NULL;
    pGig     = NULL;

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

    patch_format      = patch_format_unknown;
    instrument_index  = 0;
    num_fragments     = AUDIO_FRAGMENTS;
    fragmentsize      = AUDIO_FRAGMENTSIZE;
    volume            = 0.25; // default volume

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

    if (patch_format != patch_format_gig) {
        printf("Sorry only Gigasampler loading migrated in LinuxSampler so far, use --gig to load a .gig file!\n");
        printf("Use 'linuxsampler --help' to see all available options.\n");
        return EXIT_FAILURE;
    }

#if HAVE_JACK
    dmsg(1,("Initializing audio output (Jack)..."));
    pAudioIO = new JackIO();
    int error = ((JackIO*)pAudioIO)->Initialize(AUDIO_CHANNELS);
    if (error) {
        dmsg(1,("Trying Alsa output instead.\n"));
        dmsg(1,("Initializing audio output (Alsa)..."));
        pAudioIO = new AlsaIO();
        int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
        if (error) return EXIT_FAILURE;
    }
    dmsg(1,("OK\n"));
#else // Alsa only
    dmsg(1,("Initializing audio output (Alsa)..."));
    pAudioIO = new AlsaIO();
    int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
    if (error) return EXIT_FAILURE;
    dmsg(1,("OK\n"));
#endif // HAVE_JACK

    // Loading gig file
    try {
        printf("Loading gig file...");
        fflush(stdout);
        pRIFF       = new RIFF::File(argv[argc - 1]);
        pGig        = new gig::File(pRIFF);
        pInstrument = pGig->GetInstrument(instrument_index);
        if (!pInstrument) {
            printf("there's no instrument with index %d.\n", instrument_index);
            exit(EXIT_FAILURE);
        }
        pGig->GetFirstSample(); // just to complete instrument loading before we enter the realtime part
        printf("OK\n");
        fflush(stdout);
    }
    catch (RIFF::Exception e) {
        e.PrintMessage();
        return EXIT_FAILURE;
    }
    catch (...) {
        printf("Unknown exception while trying to parse gig file.\n");
        return EXIT_FAILURE;
    }

    DiskThread*  pDiskThread   = new DiskThread(((pAudioIO->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo
    AudioThread* pAudioThread  = new AudioThread(pAudioIO, pDiskThread, pInstrument);
    MidiIn*      pMidiInThread = new MidiIn(pAudioThread);

    dmsg(1,("Starting disk thread..."));
    pDiskThread->StartThread();
    dmsg(1,("OK\n"));
    dmsg(1,("Starting MIDI in thread..."));
    if (input_client.size() > 0) pMidiInThread->SubscribeToClient(input_client.c_str());
    pMidiInThread->StartThread();
    dmsg(1,("OK\n"));

    sleep(1);
    dmsg(1,("Starting audio thread..."));
    pAudioThread->Volume = volume;
    pAudioIO->AssignEngine(pAudioThread);
    pAudioIO->Activate();
    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",
            pAudioThread->ActiveVoiceCount, pAudioThread->ActiveVoiceCountMax,
            pDiskThread->ActiveStreamCount, pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
      fflush(stdout);
      usleep(500000);
    }

    return EXIT_SUCCESS;
}

void signal_handler(int signal) {
    if (pthread_equal(pthread_self(), signalhandlerthread) && signal == SIGINT) {
        // stop all threads
        if (pAudioIO)      pAudioIO->Close();
        if (pMidiInThread) pMidiInThread->StopThread();
        if (pDiskThread)   pDiskThread->StopThread();

        // free all resources
        if (pMidiInThread) delete pMidiInThread;
        if (pAudioThread)  delete pAudioThread;
        if (pDiskThread)   delete pDiskThread;
        if (pGig)          delete pGig;
        if (pRIFF)         delete pRIFF;
        if (pAudioIO)      delete pAudioIO;

        printf("LinuxSampler stopped due to SIGINT\n");
        exit(EXIT_SUCCESS);
    }
}

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},
            {"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:
                    num_fragments = atoi(optarg);
                    break;
                case 1:
                    fragmentsize = atoi(optarg);
                    break;
                case 2:
                    volume = atof(optarg);
                    break;
                case 3:
                    patch_format = patch_format_dls;
                    break;
                case 4:
                    patch_format = patch_format_gig;
                    break;
                case 5:
                    instrument_index = atoi(optarg);
                    break;
                case 6:
                    input_client = optarg;
                    break;
                case 7:
                    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");
                    exit(0);
                    break;
            }
        }
    }
}
1	schoenebeck	9	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003 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 <stdio.h>
24			#include <stdlib.h>
25			#include <unistd.h>
26			#include <getopt.h>
27			#include <signal.h>
28	schoenebeck	13	#include <pthread.h>
29	schoenebeck	9
30	schoenebeck	20	#include <string>
31
32	schoenebeck	9	#include "global.h"
33			#include "diskthread.h"
34			#include "audiothread.h"
35	schoenebeck	31	#include "alsaio.h"
36			#include "jackio.h"
37	schoenebeck	9	#include "midiin.h"
38			#include "stream.h"
39			#include "RIFF.h"
40			#include "gig.h"
41
42			#define AUDIO_CHANNELS 2 // stereo
43			#define AUDIO_FRAGMENTS 3 // 3 fragments, if it does not work set it to 2
44			#define AUDIO_FRAGMENTSIZE 512 // each fragment has 512 frames
45			#define AUDIO_SAMPLERATE 44100 // Hz
46
47			enum patch_format_t {
48			patch_format_unknown,
49			patch_format_gig,
50			patch_format_dls
51			} patch_format;
52
53			AudioIO* pAudioIO;
54			DiskThread* pDiskThread;
55			AudioThread* pAudioThread;
56			MidiIn* pMidiInThread;
57			RIFF::File* pRIFF;
58			gig::File* pGig;
59			gig::Instrument* pInstrument;
60	schoenebeck	20	uint instrument_index;
61			double volume;
62	schoenebeck	12	int num_fragments;
63			int fragmentsize;
64	schoenebeck	20	std::string input_client;
65	schoenebeck	13	pthread_t signalhandlerthread;
66	schoenebeck	9
67			void parse_options(int argc, char **argv);
68			void signal_handler(int signal);
69
70			int main(int argc, char **argv) {
71			pAudioIO = NULL;
72			pRIFF = NULL;
73			pGig = NULL;
74
75			// setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
76	schoenebeck	13	signalhandlerthread = pthread_self();
77	schoenebeck	9	signal(SIGINT, signal_handler);
78
79			patch_format = patch_format_unknown;
80	schoenebeck	20	instrument_index = 0;
81	schoenebeck	9	num_fragments = AUDIO_FRAGMENTS;
82			fragmentsize = AUDIO_FRAGMENTSIZE;
83	schoenebeck	20	volume = 0.25; // default volume
84	schoenebeck	9
85			// parse and assign command line options
86			parse_options(argc, argv);
87
88			if (patch_format != patch_format_gig) {
89	schoenebeck	12	printf("Sorry only Gigasampler loading migrated in LinuxSampler so far, use --gig to load a .gig file!\n");
90	schoenebeck	20	printf("Use 'linuxsampler --help' to see all available options.\n");
91	schoenebeck	9	return EXIT_FAILURE;
92			}
93
94	schoenebeck	31	#if HAVE_JACK
95			dmsg(1,("Initializing audio output (Jack)..."));
96			pAudioIO = new JackIO();
97			int error = ((JackIO*)pAudioIO)->Initialize(AUDIO_CHANNELS);
98			if (error) {
99			dmsg(1,("Trying Alsa output instead.\n"));
100			dmsg(1,("Initializing audio output (Alsa)..."));
101			pAudioIO = new AlsaIO();
102			int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
103			if (error) return EXIT_FAILURE;
104			}
105			dmsg(1,("OK\n"));
106			#else // Alsa only
107			dmsg(1,("Initializing audio output (Alsa)..."));
108			pAudioIO = new AlsaIO();
109			int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
110	schoenebeck	9	if (error) return EXIT_FAILURE;
111	schoenebeck	12	dmsg(1,("OK\n"));
112	schoenebeck	31	#endif // HAVE_JACK
113	schoenebeck	9
114			// Loading gig file
115			try {
116			printf("Loading gig file...");
117			fflush(stdout);
118			pRIFF = new RIFF::File(argv[argc - 1]);
119			pGig = new gig::File(pRIFF);
120	schoenebeck	20	pInstrument = pGig->GetInstrument(instrument_index);
121			if (!pInstrument) {
122			printf("there's no instrument with index %d.\n", instrument_index);
123			exit(EXIT_FAILURE);
124			}
125	schoenebeck	9	pGig->GetFirstSample(); // just to complete instrument loading before we enter the realtime part
126			printf("OK\n");
127			fflush(stdout);
128			}
129			catch (RIFF::Exception e) {
130			e.PrintMessage();
131			return EXIT_FAILURE;
132			}
133			catch (...) {
134			printf("Unknown exception while trying to parse gig file.\n");
135			return EXIT_FAILURE;
136			}
137
138	schoenebeck	31	DiskThread* pDiskThread = new DiskThread(((pAudioIO->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo
139	schoenebeck	9	AudioThread* pAudioThread = new AudioThread(pAudioIO, pDiskThread, pInstrument);
140			MidiIn* pMidiInThread = new MidiIn(pAudioThread);
141
142	schoenebeck	12	dmsg(1,("Starting disk thread..."));
143	schoenebeck	9	pDiskThread->StartThread();
144	schoenebeck	12	dmsg(1,("OK\n"));
145			dmsg(1,("Starting MIDI in thread..."));
146	schoenebeck	20	if (input_client.size() > 0) pMidiInThread->SubscribeToClient(input_client.c_str());
147	schoenebeck	9	pMidiInThread->StartThread();
148	schoenebeck	12	dmsg(1,("OK\n"));
149	schoenebeck	9
150			sleep(1);
151	schoenebeck	12	dmsg(1,("Starting audio thread..."));
152	schoenebeck	20	pAudioThread->Volume = volume;
153	schoenebeck	31	pAudioIO->AssignEngine(pAudioThread);
154			pAudioIO->Activate();
155	schoenebeck	12	dmsg(1,("OK\n"));
156	schoenebeck	9
157			printf("LinuxSampler initialization completed.\n");
158
159	senoner	10	while(true) {
160	schoenebeck	13	printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
161			pAudioThread->ActiveVoiceCount, pAudioThread->ActiveVoiceCountMax,
162			pDiskThread->ActiveStreamCount, pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
163			fflush(stdout);
164	senoner	10	usleep(500000);
165			}
166
167	schoenebeck	9	return EXIT_SUCCESS;
168			}
169
170			void signal_handler(int signal) {
171	schoenebeck	20	if (pthread_equal(pthread_self(), signalhandlerthread) && signal == SIGINT) {
172	schoenebeck	9	// stop all threads
173	schoenebeck	31	if (pAudioIO) pAudioIO->Close();
174	schoenebeck	9	if (pMidiInThread) pMidiInThread->StopThread();
175			if (pDiskThread) pDiskThread->StopThread();
176
177			// free all resources
178			if (pMidiInThread) delete pMidiInThread;
179			if (pAudioThread) delete pAudioThread;
180			if (pDiskThread) delete pDiskThread;
181			if (pGig) delete pGig;
182			if (pRIFF) delete pRIFF;
183			if (pAudioIO) delete pAudioIO;
184
185			printf("LinuxSampler stopped due to SIGINT\n");
186			exit(EXIT_SUCCESS);
187			}
188			}
189
190			void parse_options(int argc, char **argv) {
191			int res;
192			int option_index = 0;
193			static struct option long_options[] =
194			{
195			{"numfragments",1,0,0},
196			{"fragmentsize",1,0,0},
197	schoenebeck	20	{"volume",1,0,0},
198	schoenebeck	9	{"dls",0,0,0},
199			{"gig",0,0,0},
200	schoenebeck	20	{"instrument",1,0,0},
201			{"inputclient",1,0,0},
202	schoenebeck	9	{"help",0,0,0},
203			{0,0,0,0}
204			};
205
206			while (true) {
207			res = getopt_long_only(argc, argv, "", long_options, &option_index);
208			if(res == -1) break;
209			if (res == 0) {
210			switch(option_index) {
211			case 0:
212			num_fragments = atoi(optarg);
213			break;
214			case 1:
215			fragmentsize = atoi(optarg);
216			break;
217			case 2:
218	schoenebeck	20	volume = atof(optarg);
219			break;
220			case 3:
221	schoenebeck	9	patch_format = patch_format_dls;
222			break;
223	schoenebeck	20	case 4:
224	schoenebeck	9	patch_format = patch_format_gig;
225			break;
226	schoenebeck	20	case 5:
227			instrument_index = atoi(optarg);
228			break;
229			case 6:
230			input_client = optarg;
231			break;
232			case 7:
233	schoenebeck	9	printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
234	schoenebeck	20	printf("--gig loads a Gigasampler instrument\n");
235			printf("--dls loads a DLS instrument\n");
236			printf("--instrument index of the instrument in the instrument file if it\n");
237			printf(" contains more than one (default: 0)\n");
238	schoenebeck	9	printf("--numfragments sets the number of audio fragments\n");
239			printf("--fragmentsize sets the fragment size\n");
240	schoenebeck	20	printf("--volume sets global volume gain factor (a value > 1.0 means\n");
241			printf(" amplification, a value < 1.0 means attenuation,\n");
242			printf(" default: 0.25)\n");
243			printf("--inputclient connects to an Alsa sequencer input client on startup\n");
244			printf(" (e.g. 64:0 to connect to a client with ID 64 and port 0)\n");
245	schoenebeck	9	exit(0);
246			break;
247			}
248			}
249			}
250			}