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 "global.h"
#include "audioio.h"
#include "diskthread.h"
#include "audiothread.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;
int              num_fragments;
int              fragmentsize;
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;
    num_fragments     = AUDIO_FRAGMENTS;
    fragmentsize      = AUDIO_FRAGMENTSIZE;

    // 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");
        return EXIT_FAILURE;
    }

    dmsg(1,("Initializing audio output..."));
    pAudioIO = new AudioIO();
    int error = pAudioIO->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
    if (error) return EXIT_FAILURE;
    dmsg(1,("OK\n"));

    // Loading gig file
    try {
        printf("Loading gig file...");
        fflush(stdout);
        pRIFF       = new RIFF::File(argv[argc - 1]);
        pGig        = new gig::File(pRIFF);
        pInstrument = pGig->GetFirstInstrument();
        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->FragmentSize << MAX_PITCH) << 1) + 3); //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..."));
    pMidiInThread->StartThread();
    dmsg(1,("OK\n"));

    sleep(1);
    dmsg(1,("Starting audio thread..."));
    pAudioThread->StartThread();
    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 (pMidiInThread) pMidiInThread->StopThread();
        if (pAudioThread)  pAudioThread->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},
            {"dls",0,0,0},
            {"gig",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:
                    num_fragments = atoi(optarg);
                    break;
                case 1:
                    fragmentsize = atoi(optarg);
                    break;
                case 2:
                    patch_format = patch_format_dls;
                    break;
                case 3:
                    patch_format = patch_format_gig;
                    break;
                case 4:
                    printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
                    printf("--numfragments     sets the number of audio fragments\n");
                    printf("--fragmentsize     sets the fragment size\n");
                    printf("--dls              loads a DLS instrument\n");
                    printf("--gig              loads a Gigasampler instrument\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			#include "global.h"
31			#include "audioio.h"
32			#include "diskthread.h"
33			#include "audiothread.h"
34			#include "midiin.h"
35			#include "stream.h"
36			#include "RIFF.h"
37			#include "gig.h"
38
39			#define AUDIO_CHANNELS 2 // stereo
40			#define AUDIO_FRAGMENTS 3 // 3 fragments, if it does not work set it to 2
41			#define AUDIO_FRAGMENTSIZE 512 // each fragment has 512 frames
42			#define AUDIO_SAMPLERATE 44100 // Hz
43
44			enum patch_format_t {
45			patch_format_unknown,
46			patch_format_gig,
47			patch_format_dls
48			} patch_format;
49
50			AudioIO* pAudioIO;
51			DiskThread* pDiskThread;
52			AudioThread* pAudioThread;
53			MidiIn* pMidiInThread;
54			RIFF::File* pRIFF;
55			gig::File* pGig;
56			gig::Instrument* pInstrument;
57	schoenebeck	12	int num_fragments;
58			int fragmentsize;
59	schoenebeck	13	pthread_t signalhandlerthread;
60	schoenebeck	9
61			void parse_options(int argc, char **argv);
62			void signal_handler(int signal);
63
64			int main(int argc, char **argv) {
65			pAudioIO = NULL;
66			pRIFF = NULL;
67			pGig = NULL;
68
69			// setting signal handler for catching SIGINT (thus e.g. <CTRL><C>)
70	schoenebeck	13	signalhandlerthread = pthread_self();
71	schoenebeck	9	signal(SIGINT, signal_handler);
72
73			patch_format = patch_format_unknown;
74			num_fragments = AUDIO_FRAGMENTS;
75			fragmentsize = AUDIO_FRAGMENTSIZE;
76
77			// parse and assign command line options
78			parse_options(argc, argv);
79
80			if (patch_format != patch_format_gig) {
81	schoenebeck	12	printf("Sorry only Gigasampler loading migrated in LinuxSampler so far, use --gig to load a .gig file!\n");
82	schoenebeck	9	return EXIT_FAILURE;
83			}
84
85	schoenebeck	12	dmsg(1,("Initializing audio output..."));
86	schoenebeck	9	pAudioIO = new AudioIO();
87			int error = pAudioIO->Initialize(AUDIO_CHANNELS, AUDIO_SAMPLERATE, num_fragments, fragmentsize);
88			if (error) return EXIT_FAILURE;
89	schoenebeck	12	dmsg(1,("OK\n"));
90	schoenebeck	9
91			// Loading gig file
92			try {
93			printf("Loading gig file...");
94			fflush(stdout);
95			pRIFF = new RIFF::File(argv[argc - 1]);
96			pGig = new gig::File(pRIFF);
97			pInstrument = pGig->GetFirstInstrument();
98			pGig->GetFirstSample(); // just to complete instrument loading before we enter the realtime part
99			printf("OK\n");
100			fflush(stdout);
101			}
102			catch (RIFF::Exception e) {
103			e.PrintMessage();
104			return EXIT_FAILURE;
105			}
106			catch (...) {
107			printf("Unknown exception while trying to parse gig file.\n");
108			return EXIT_FAILURE;
109			}
110
111			DiskThread* pDiskThread = new DiskThread(((pAudioIO->FragmentSize << MAX_PITCH) << 1) + 3); //FIXME: assuming stereo
112			AudioThread* pAudioThread = new AudioThread(pAudioIO, pDiskThread, pInstrument);
113			MidiIn* pMidiInThread = new MidiIn(pAudioThread);
114
115	schoenebeck	12	dmsg(1,("Starting disk thread..."));
116	schoenebeck	9	pDiskThread->StartThread();
117	schoenebeck	12	dmsg(1,("OK\n"));
118			dmsg(1,("Starting MIDI in thread..."));
119	schoenebeck	9	pMidiInThread->StartThread();
120	schoenebeck	12	dmsg(1,("OK\n"));
121	schoenebeck	9
122			sleep(1);
123	schoenebeck	12	dmsg(1,("Starting audio thread..."));
124	schoenebeck	9	pAudioThread->StartThread();
125	schoenebeck	12	dmsg(1,("OK\n"));
126	schoenebeck	9
127			printf("LinuxSampler initialization completed.\n");
128
129	senoner	10	while(true) {
130	schoenebeck	13	printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
131			pAudioThread->ActiveVoiceCount, pAudioThread->ActiveVoiceCountMax,
132			pDiskThread->ActiveStreamCount, pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
133			fflush(stdout);
134	senoner	10	usleep(500000);
135			}
136
137	schoenebeck	9	return EXIT_SUCCESS;
138			}
139
140			void signal_handler(int signal) {
141	schoenebeck	13	if (pthread_equal(pthread_self(), signalhandlerthread) && signal == SIGINT) {
142	schoenebeck	9	// stop all threads
143			if (pMidiInThread) pMidiInThread->StopThread();
144			if (pAudioThread) pAudioThread->StopThread();
145			if (pDiskThread) pDiskThread->StopThread();
146
147			// free all resources
148			if (pMidiInThread) delete pMidiInThread;
149			if (pAudioThread) delete pAudioThread;
150			if (pDiskThread) delete pDiskThread;
151			if (pGig) delete pGig;
152			if (pRIFF) delete pRIFF;
153			if (pAudioIO) delete pAudioIO;
154
155			printf("LinuxSampler stopped due to SIGINT\n");
156			exit(EXIT_SUCCESS);
157			}
158			}
159
160			void parse_options(int argc, char **argv) {
161			int res;
162			int option_index = 0;
163			static struct option long_options[] =
164			{
165			{"numfragments",1,0,0},
166			{"fragmentsize",1,0,0},
167			{"dls",0,0,0},
168			{"gig",0,0,0},
169			{"help",0,0,0},
170			{0,0,0,0}
171			};
172
173			while (true) {
174			res = getopt_long_only(argc, argv, "", long_options, &option_index);
175			if(res == -1) break;
176			if (res == 0) {
177			switch(option_index) {
178			case 0:
179			num_fragments = atoi(optarg);
180			break;
181			case 1:
182			fragmentsize = atoi(optarg);
183			break;
184			case 2:
185			patch_format = patch_format_dls;
186			break;
187			case 3:
188			patch_format = patch_format_gig;
189			break;
190			case 4:
191			printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
192			printf("--numfragments sets the number of audio fragments\n");
193			printf("--fragmentsize sets the fragment size\n");
194			printf("--dls loads a DLS instrument\n");
195			printf("--gig loads a Gigasampler instrument\n");
196			exit(0);
197			break;
198			}
199			}
200			}
201			}