/[svn]/linuxsampler/trunk/src/linuxsampler.cpp
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Annotation of /linuxsampler/trunk/src/linuxsampler.cpp

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Revision 41 - (hide annotations) (download)
Wed Mar 31 10:28:42 2004 UTC (20 years ago) by schoenebeck
File size: 10973 byte(s)
removed unnecessary dependencies

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 <getopt.h>
24     #include <signal.h>
25    
26     #include "global.h"
27     #include "diskthread.h"
28     #include "audiothread.h"
29 schoenebeck 31 #include "alsaio.h"
30     #include "jackio.h"
31 schoenebeck 9 #include "midiin.h"
32     #include "stream.h"
33     #include "RIFF.h"
34     #include "gig.h"
35 schoenebeck 35 #include "network/lscpserver.h"
36 schoenebeck 9
37     #define AUDIO_CHANNELS 2 // stereo
38     #define AUDIO_FRAGMENTS 3 // 3 fragments, if it does not work set it to 2
39     #define AUDIO_FRAGMENTSIZE 512 // each fragment has 512 frames
40     #define AUDIO_SAMPLERATE 44100 // Hz
41    
42     enum patch_format_t {
43     patch_format_unknown,
44     patch_format_gig,
45     patch_format_dls
46 schoenebeck 35 } patch_format = patch_format_unknown;
47 schoenebeck 9
48 schoenebeck 35 AudioIO* pAudioIO = NULL;
49     MidiIn* pMidiInThread = NULL;
50     LSCPServer* pLSCPServer = NULL;
51     AudioThread* pEngine = NULL;
52     uint instrument_index = 0;
53     double volume = 0.25;
54     int num_fragments = AUDIO_FRAGMENTS;
55     int fragmentsize = AUDIO_FRAGMENTSIZE;
56     uint samplerate = AUDIO_SAMPLERATE;
57     String input_client;
58     String alsaout = "0,0"; // default card
59     String jack_playback[2] = { "", "" };
60     bool use_jack = true;
61     bool run_server = false;
62     pthread_t signalhandlerthread;
63 schoenebeck 9
64     void parse_options(int argc, char **argv);
65     void signal_handler(int signal);
66    
67     int main(int argc, char **argv) {
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     // parse and assign command line options
74     parse_options(argc, argv);
75    
76     if (patch_format != patch_format_gig) {
77 schoenebeck 12 printf("Sorry only Gigasampler loading migrated in LinuxSampler so far, use --gig to load a .gig file!\n");
78 schoenebeck 20 printf("Use 'linuxsampler --help' to see all available options.\n");
79 schoenebeck 9 return EXIT_FAILURE;
80     }
81    
82 schoenebeck 33 int error = 1;
83 schoenebeck 31 #if HAVE_JACK
84 schoenebeck 33 if (use_jack) {
85     dmsg(1,("Initializing audio output (Jack)..."));
86     pAudioIO = new JackIO();
87     error = ((JackIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, jack_playback);
88     if (error) dmsg(1,("Trying Alsa output instead.\n"));
89     }
90     #endif // HAVE_JACK
91 schoenebeck 31 if (error) {
92     dmsg(1,("Initializing audio output (Alsa)..."));
93     pAudioIO = new AlsaIO();
94 schoenebeck 33 int error = ((AlsaIO*)pAudioIO)->Initialize(AUDIO_CHANNELS, samplerate, num_fragments, fragmentsize, alsaout);
95 schoenebeck 31 if (error) return EXIT_FAILURE;
96     }
97     dmsg(1,("OK\n"));
98 schoenebeck 9
99 schoenebeck 35 AudioThread* pEngine = new AudioThread(pAudioIO);
100     MidiIn* pMidiInThread = new MidiIn(pEngine);
101    
102 schoenebeck 9 // Loading gig file
103 schoenebeck 35 result_t result = pEngine->LoadInstrument(argv[argc - 1], instrument_index);
104     if (result.type == result_type_error) return EXIT_FAILURE;
105     pEngine->Volume = volume;
106 schoenebeck 9
107 schoenebeck 12 dmsg(1,("Starting MIDI in thread..."));
108 schoenebeck 20 if (input_client.size() > 0) pMidiInThread->SubscribeToClient(input_client.c_str());
109 schoenebeck 9 pMidiInThread->StartThread();
110 schoenebeck 12 dmsg(1,("OK\n"));
111 schoenebeck 9
112     sleep(1);
113 schoenebeck 35
114 schoenebeck 12 dmsg(1,("Starting audio thread..."));
115 schoenebeck 35 pAudioIO->AssignEngine(pEngine);
116 schoenebeck 31 pAudioIO->Activate();
117 schoenebeck 12 dmsg(1,("OK\n"));
118 schoenebeck 9
119 schoenebeck 35 if (run_server) {
120     dmsg(1,("Starting network server..."));
121     pLSCPServer = new LSCPServer(pEngine);
122     pLSCPServer->StartThread();
123     dmsg(1,("OK\n"));
124     }
125    
126 schoenebeck 9 printf("LinuxSampler initialization completed.\n");
127    
128 senoner 10 while(true) {
129 schoenebeck 13 printf("Voices: %3.3d (Max: %3.3d) Streams: %3.3d (Max: %3.3d, Unused: %3.3d)\r",
130 schoenebeck 35 pEngine->ActiveVoiceCount, pEngine->ActiveVoiceCountMax,
131     pEngine->pDiskThread->ActiveStreamCount, pEngine->pDiskThread->ActiveStreamCountMax, Stream::GetUnusedStreams());
132 schoenebeck 13 fflush(stdout);
133 senoner 10 usleep(500000);
134     }
135    
136 schoenebeck 9 return EXIT_SUCCESS;
137     }
138    
139     void signal_handler(int signal) {
140 schoenebeck 20 if (pthread_equal(pthread_self(), signalhandlerthread) && signal == SIGINT) {
141 schoenebeck 9 // stop all threads
142 schoenebeck 31 if (pAudioIO) pAudioIO->Close();
143 schoenebeck 9 if (pMidiInThread) pMidiInThread->StopThread();
144    
145     // free all resources
146     if (pMidiInThread) delete pMidiInThread;
147 schoenebeck 35 if (pEngine) delete pEngine;
148 schoenebeck 9 if (pAudioIO) delete pAudioIO;
149    
150     printf("LinuxSampler stopped due to SIGINT\n");
151     exit(EXIT_SUCCESS);
152     }
153     }
154    
155     void parse_options(int argc, char **argv) {
156     int res;
157     int option_index = 0;
158     static struct option long_options[] =
159     {
160     {"numfragments",1,0,0},
161     {"fragmentsize",1,0,0},
162 schoenebeck 20 {"volume",1,0,0},
163 schoenebeck 9 {"dls",0,0,0},
164     {"gig",0,0,0},
165 schoenebeck 20 {"instrument",1,0,0},
166     {"inputclient",1,0,0},
167 schoenebeck 33 {"alsaout",1,0,0},
168     {"jackout",1,0,0},
169     {"samplerate",1,0,0},
170 schoenebeck 35 {"server",0,0,0},
171 schoenebeck 9 {"help",0,0,0},
172     {0,0,0,0}
173     };
174    
175     while (true) {
176     res = getopt_long_only(argc, argv, "", long_options, &option_index);
177     if(res == -1) break;
178     if (res == 0) {
179     switch(option_index) {
180 schoenebeck 33 case 0: // --numfragments
181 schoenebeck 9 num_fragments = atoi(optarg);
182     break;
183 schoenebeck 33 case 1: // --fragmentsize
184 schoenebeck 9 fragmentsize = atoi(optarg);
185     break;
186 schoenebeck 33 case 2: // --volume
187 schoenebeck 20 volume = atof(optarg);
188     break;
189 schoenebeck 33 case 3: // --dls
190 schoenebeck 9 patch_format = patch_format_dls;
191     break;
192 schoenebeck 33 case 4: // --gig
193 schoenebeck 9 patch_format = patch_format_gig;
194     break;
195 schoenebeck 33 case 5: // --instrument
196 schoenebeck 20 instrument_index = atoi(optarg);
197     break;
198 schoenebeck 33 case 6: // --inputclient
199 schoenebeck 20 input_client = optarg;
200     break;
201 schoenebeck 33 case 7: // --alsaout
202     alsaout = optarg;
203     use_jack = false; // If this option is specified do not connect to jack
204     break;
205     case 8: { // --jackout
206     try {
207     String arg(optarg);
208     // remove outer apostrophes
209     arg = arg.substr(arg.find('\'') + 1, arg.rfind('\'') - (arg.find('\'') + 1));
210     // split in two arguments
211     jack_playback[0] = arg.substr(0, arg.find("\' "));
212     jack_playback[1] = arg.substr(arg.find("\' ") + 2, arg.size() - (arg.find("\' ") + 2));
213     // remove inner apostrophes
214     jack_playback[0] = jack_playback[0].substr(0, jack_playback[0].find('\''));
215     jack_playback[1] = jack_playback[1].substr(jack_playback[1].find('\'') + 1, jack_playback[1].size() - jack_playback[1].find('\''));
216     // this is the default but set it up anyway in case alsa_card was also used.
217     use_jack = true;
218     }
219     catch (...) {
220     fprintf(stderr, "Invalid argument '%s' for parameter --jackout\n", optarg);
221     exit(EXIT_FAILURE);
222     }
223     break;
224     }
225     case 9: // --samplerate
226     samplerate = atoi(optarg);
227     break;
228 schoenebeck 35 case 10: // --server
229     run_server = true;
230     break;
231     case 11: // --help
232 schoenebeck 9 printf("usage: linuxsampler [OPTIONS] <INSTRUMENTFILE>\n\n");
233 schoenebeck 20 printf("--gig loads a Gigasampler instrument\n");
234     printf("--dls loads a DLS instrument\n");
235     printf("--instrument index of the instrument in the instrument file if it\n");
236     printf(" contains more than one (default: 0)\n");
237 schoenebeck 9 printf("--numfragments sets the number of audio fragments\n");
238     printf("--fragmentsize sets the fragment size\n");
239 schoenebeck 20 printf("--volume sets global volume gain factor (a value > 1.0 means\n");
240     printf(" amplification, a value < 1.0 means attenuation,\n");
241     printf(" default: 0.25)\n");
242     printf("--inputclient connects to an Alsa sequencer input client on startup\n");
243     printf(" (e.g. 64:0 to connect to a client with ID 64 and port 0)\n");
244 schoenebeck 33 printf("--alsaout connects to the given Alsa sound device on startup\n");
245     printf(" (e.g. 0,0 to connect to hw:0,0 or plughw:0,0)\n");
246     printf("--jackout connects to the given Jack playback ports on startup\n");
247     printf(" (e.g. \"\'alsa_pcm:playback_1\' \'alsa_pcm:playback_2\'\"\n");
248     printf(" in case of stereo output)\n");
249     printf("--samplerate sets sample rate if supported by audio output system\n");
250     printf(" (e.g. 44100)\n");
251 schoenebeck 35 printf("--server launch network server for remote control\n");
252 schoenebeck 33 exit(EXIT_SUCCESS);
253 schoenebeck 9 break;
254     }
255     }
256     }
257     }

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