summaryrefslogtreecommitdiff
path: root/drumgizmo/drumgizmoc.cc
blob: cec96f7495aafcfb40938923a6e6d25985b8ad81 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            drumgizmoc.cc
 *
 *  Thu Sep 16 10:23:22 CEST 2010
 *  Copyright 2010 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  DrumGizmo 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include <iostream>

#include <config.h>
#include <getoptpp.hpp>

#include <string.h>
#include <fstream>
#include <sstream>
#include <chrono>
#include <thread>
#ifdef HAVE_WORDEXP
#include <wordexp.h>
#else
#include <glob.h>
#endif

#include <hugin.hpp>

#include "drumgizmo.h"
#include "enginefactory.h"
#include "bytesizeparser.h"

#include "event.h"

#include "nolocale.h"

struct ParmToken
{
	std::string key;
	std::string value;
};

static std::string version()
{
	std::ostringstream output;
	output << "DrumGizmo v" << VERSION << std::endl;
	return output.str();
}

static std::string copyright()
{
	std::ostringstream output;
	output << "Copyright (C) 2008-2020 DrumGizmo team - DrumGizmo.org.\n";
	output << "This is free software.  You may redistribute copies of it under the terms ";
	output << "of\n";
	output << "the GNU Lesser General Public License <http://www.gnu.org/licenses/gpl.html>.\n";
	output << "There is NO WARRANTY, to the extent permitted by law.\n";
	output << "\n";
	return output.str();
}

static std::string usage(const std::string& name)
{
	std::ostringstream output;
	output <<
		"==============================================================================\n"
		"This is the command line version of DrumGizmo. The graphical user interface is\n"
		"only available in the plugins.\n"
		"==============================================================================\n"
		"\n"
		"Usage: " << name << " [options] drumkitfile\n";
	return output.str();
}

static std::string arguments()
{
	std::ostringstream output;
	output <<
		"Input engine parameters:\n"
		"  jackmidi:  midimap=<midimapfile>\n"
		"  alsamidi:  midimap=<midimapfile>\n"
		"  midifile:  file=<midifile>, speed=<tempo> (default 1.0),\n"
		"             track=<miditrack> (default -1, all tracks)\n"
		"             midimap=<midimapfile>, loop=<true|false>\n"
		"  ossmidi:   midimap=<midimapfile>, dev=<device> (default '/dev/midi')\n"
		"  test:      p=<hit_propability> (default 0.1)\n"
		"             instr=<instrument> (default -1, random instrument)\n"
		"             len=<seconds> (default -1, forever)\n"
		"  dummy:\n"
		"\n"
		"Output engine parameters:\n"
		"  alsa:      dev=<device> (default 'default'), frames=<frames> (default "
		"32),\n"
		"             periods=<periods> (default 3)\n"
		"             srate=<samplerate> (default 441000)\n"
		"  oss:       dev=<device> (default '/dev/dsp'), srate=<samplerate>,\n"
		"             max_fragments=<number> (default 4, see man page for more info),\n"
		"             fragment_size=<selector> (default 8, see man page for more info)\n"
		"  wavfile:   file=<filename> (default 'output'), srate=<samplerate> "
		"(default 44100)\n"
		"  jackaudio:\n"
		"  dummy:\n"
		"\n"
		"Streaming parameters:\n"
		"  limit:         Limit the amount of preloaded drumkit data to the size\n"
		//"  chunk_size:    chunk size in k,M,G\n"
		"\n"
		"Timing humanizer parameters:\n"
		"  laidback:      Move notes ahead or behind in time in ms [+/-100].\n"
		"  tightness:     Control the tightness of the drummer. [0,1]\n"
		"  regain:        Control how fast the drummer catches up the timing. [0,1]\n"
		"\n"
		"Velocity humanizer parameters:\n"
		"  attack:        How quickly the velocity gets reduced when playing fast notes.\n"
		"                 Lower values result in faster velocity reduction.\n"
		"  release:       How quickly the drummer regains the velocity\n"
		"                 when there are spaces between the notes.\n"
		"                 Lower values result in faster regain. [0,1]\n"
		"  stddev:        The standard-deviation of the velocity humanization.\n"
		"                 Higher value makes it more likely that a sample further\n"
		"                 away from the input velocity will be played. [0,4.5]\n"
		"\n"
		"Sample selection parameters:\n"
		"  close:         The importance given to choosing a sample close to\n"
		"                 the actual velocity value (after humanization). [0,1]\n"
		"  diverse:       The importance given to choosing samples\n"
		"                 which haven't been played recently. [0,1]\n"
		"  random:        The amount of randomness added. [0,1]\n"
		"\n";
	return output.str();
}

std::vector<ParmToken> parseParameters(std::string &parms)
{
	std::vector<ParmToken> result;
	std::string parm;
	std::string val;
	bool inval = false;
#ifdef HAVE_WORDEXP
	wordexp_t exp_result;
#else
	glob_t g;
#endif
	for(size_t i = 0; i < parms.size(); ++i)
	{
		if(parms[i] == ',')
		{
		#ifdef HAVE_WORDEXP
			int error = wordexp(val.data(), &exp_result, 0);
		#else
			int error = glob(val.data(), 0, NULL, &g);
		#endif
			if(error)
			{
				std::cerr << "Wrong argument: ";
				std::cerr << parm << " = " << val << std::endl;
				exit(1);
			}
		#ifdef HAVE_WORDEXP
			result.push_back({parm, exp_result.we_wordv[0]});
		#else
			result.push_back({parm, g.gl_pathv[0]});
		#endif
			parm = "";
			val = "";
			inval = false;
			continue;
		}

		if(parms[i] == '=')
		{
			inval = true;
			continue;
		}

		if(inval)
		{
			val += parms[i];
		}
		else
		{
			parm += parms[i];
		}
	}
	if(parm != "")
	{
	#ifdef HAVE_WORDEXP
		int error = wordexp(val.data(), &exp_result, 0);
	#else
		int error = glob(val.data(), 0, NULL, &g);
	#endif
		if(error)
		{
			std::cerr << "Wrong argument: ";
			std::cerr << parm << " = " << val << std::endl;
			exit(1);
		}
	#ifdef HAVE_WORDEXP
		result.push_back({parm, exp_result.we_wordv[0]});
	#else
		result.push_back({parm, g.gl_pathv[0]});
	#endif
	}
	return result;
}

int main(int argc, char* argv[])
{
	EngineFactory factory;
	Settings settings;
	bool async = false;
	dg::Options opt;
	int endpos = -1;
	std::string kitfile;
	std::unique_ptr<AudioInputEngine> ie;
	std::unique_ptr<AudioOutputEngine> oe;
	std::string hugin_filter;
	unsigned int hugin_flags = 0;
#ifndef DISABLE_HUGIN
	hugin_flags = HUG_FLAG_DEFAULT;
#endif /*DISABLE_HUGIN*/

	// if no arguments are passed, just print usage and exit
	if (argc == 1)
	{
		std::cout << version();
		std::cout << usage(argv[0]);
		return 0;
	}

	opt.add("async-load", no_argument, 'a',
	        "Load drumkit in the background and start the engine immediately.",
	        [&]()
	        {
		        async = true;
		        return 0;
	        });

	opt.add("bleed", required_argument, 'b',
	        "Set and enable master bleed.",
	        [&]()
	        {
		        float bleed = atof_nol(optarg);
		        settings.enable_bleed_control = true;
		        settings.master_bleed = bleed;
		        return 0;
	        });

	opt.add("inputengine", required_argument, 'i',
	        "dummy|test|jackmidi|alsamidi|midifile  Use said event input engine.",
	        [&]()
	        {
		        std::string engine = optarg;
		        if(engine == "help")
		        {
			        std::cout << "Available Input Engines = { ";
			        for(auto const& name : factory.getInputEngines())
			        {
				        std::cout << name << " ";
			        }
			        std::cout << "}\n";
			        exit(0);
		        }
		        if(engine == "")
		        {
			        std::cerr << "Missing input engine" << std::endl;
			        return 1;
		        }
		        ie = factory.createInput(engine);
		        if(ie == NULL)
		        {
			        std::cerr << "Invalid input engine: " << engine << std::endl;
			        return 1;
		        }
		        return 0;
	        });

	opt.add("inputparms", required_argument, 'I',
	        "Set input engine parameters.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        ie->setParm(token.key, token.value);
		        }
		        return 0;
	        });

	opt.add("outputengine", required_argument, 'o',
	        "dummy|alsa|jackaudio|wavfile  Use said audio output engine.",
	        [&]()
	        {
		        std::string engine = optarg;
		        if(engine == "help")
		        {
			        std::cout << "Available Output Engines = { ";
			        for(auto const& name : factory.getOutputEngines())
			        {
				        std::cout << name << " ";
			        }
			        std::cout << " }\n";
			        exit(0);
		        }
		        if(engine == "")
		        {
			        std::cerr << "Missing output engine" << std::endl;
			        return 1;
		        }
		        oe = factory.createOutput(engine);
		        if(ie == NULL)
		        if(oe == NULL)
		        {
			        std::cerr << "Invalid output engine: " << engine << std::endl;
			        return 1;
		        }
		        return 0;
	        });

	opt.add("outputparms", required_argument, 'O',
	        "Set output engine parameters.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        oe->setParm(token.key, token.value);
		        }
		        return 0;
	        });

	opt.add("endpos", required_argument, 'e',
	        "Number of samples to process, -1: infinite.",
	        [&]()
	        {
		        try
		        {
			        endpos = std::stoi(optarg);
		        }
		        catch(...)
		        {
			        std::cerr << "Invalid endpos size " << optarg << std::endl;
		        }
		        return 0;
	        });

#ifndef DISABLE_HUGIN
	opt.add("debug", required_argument, 'D',
	        "Enable debug messages on 'ddd' see hugin documentation for details.",
	        [&]()
	        {
		        hugin_flags |= HUG_FLAG_USE_FILTER;
		        hugin_filter = optarg;
		        return 0;
	        });
#endif /*DISABLE_HUGIN*/

	opt.add("no-resampling", no_argument, 'r',
	        "Disable resampling.",
	        [&]()
	        {
		        settings.enable_resampling = false;
		        return 0;
	        });

	opt.add("streaming", no_argument, 's',
	        "Enable streaming.",
	        [&]()
	        {
		        settings.disk_cache_enable = true;
		        return 0;
	        });

	opt.add("streamingparms", required_argument, 'S',
	        "Streaming options.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        if(token.key == "limit")
			        {
				        settings.disk_cache_upper_limit = byteSizeParser(token.value);
				        if(settings.disk_cache_upper_limit == 0)
				        {
					        std::cerr << "Invalid argument for streamparms limit: " <<
						        token.value << std::endl;
					        return 1;
				        }
			        }
			        //else if(token.key == "chunk_size")
			        //{
			        //	settings.disk_cache_chunk_size = byteSizeParser(token.value);
			        //	if(settings.disk_cache_chunk_size == 0)
			        //	{
			        //		std::cerr << "Invalid argument for streamparms chunk_size: " <<
			        //			token.value << std::endl;
			        //		return 1;
			        //	}
			        // }
			        else
			        {
				        std::cerr << "Unknown streamingparms argument " << token.key <<
					        std::endl;
				        return 1;
			        }
		        }
		        return 0;
	        });

	// Default is to disable timing humanizer
	settings.enable_latency_modifier.store(false);

	opt.add("timing-humanizer", no_argument, 't',
	        "Enable moving of notes in time.\nNOTE: Adds latency to the output so do not use this with a real-time drumkit.",
	        [&]()
	        {
		        settings.enable_latency_modifier.store(true);
		        return 0;
	        });

	opt.add("timing-humanizerparms", required_argument, 'T',
	        "Timing humanizer options.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        if(token.key == "laidback")
			        {
				        // Input range [+/- 100] ms
				        auto val = atof_nol(token.value.data());
				        if(val < -100.0 || val > 100.0)
				        {
					        std::cerr << "laidback range is +/- 100 and is in ms.\n";
					        return 1;
				        }
				        settings.latency_laid_back_ms.store(val);
			        }
			        else if(token.key == "tightness")
			        {
				        // Input range [0, 1]
				        auto val = atof_nol(token.value.data());
				        if(val < 0.0 || val > 1.0)
				        {
					        std::cerr << "tightness range is [0, 1].\n";
					        return 1;
				        }
				        settings.latency_stddev.store((-1.0 * val + 1.0) * 20.0);
			        }
			        else if(token.key == "regain")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0.0 || val > 1.0)
				        {
					        std::cerr << "regain range is [0, 1].\n";
					        return 1;
				        }
				        settings.latency_regain.store(val);
			        }
			        else
			        {
				        std::cerr << "Unknown timing-humanizerparms argument " << token.key << std::endl;
				        return 1;
			        }
		        }
		        return 0;
	        });

	// Default is to disable the velocity humanizer
	settings.enable_velocity_modifier.store(false);

	opt.add("velocity-humanizer", no_argument, 'x',
	        "Enables adapting input velocities to make it sound more realistic.",
	        [&]()
	        {
		        settings.enable_velocity_modifier.store(true);
		        return 0;
	        });

	opt.add("velocity-humanizerparms", required_argument, 'X',
	        "Velocity humanizer options.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        if (token.key == "attack")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 1.0)
				        {
					        std::cerr << "attack range is [0, 1].\n";
					        return 1;
				        }
				        settings.velocity_modifier_weight.store(val);
			        }
			        else if (token.key == "release")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 1.0)
				        {
					        std::cerr << "release range is [0, 1].\n";
					        return 1;
				        }
				        settings.velocity_modifier_falloff.store(val);
			        }
			        else if(token.key == "stddev")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 4.5)
				        {
					        std::cerr << "stddev range is [0, 4.5].\n";
					        return 1;
				        }
				        settings.velocity_stddev.store(val);
			        }
			        else
			        {
				        std::cerr << "Unknown velocity-humanizerparms argument " << token.key << std::endl;
				        return 1;
			        }
		        }
		        return 0;
	        });

	opt.add("parameters", required_argument, 'p',
	        "Parameters for sample selection algorithm.",
	        [&]()
	        {
		        std::string parms = optarg;
		        auto tokens = parseParameters(parms);
		        for(auto& token : tokens)
		        {
			        if(token.key == "close")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 1)
				        {
					        std::cerr << "close range is [0, 1].\n";
					        return 1;
				        }
				        settings.sample_selection_f_close.store(val);
			        }
			        else if(token.key == "diverse")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 1)
				        {
					        std::cerr << "diverse range is [0, 1].\n";
					        return 1;
				        }
				        settings.sample_selection_f_diverse.store(val);
			        }
			        else if(token.key == "random")
			        {
				        auto val = atof_nol(token.value.data());
				        if(val < 0 || val > 1)
				        {
					        std::cerr << "random range is [0, 1].\n";
					        return 1;
				        }
				        settings.sample_selection_f_random.store(val);
			        }
			        else
			        {
				        std::cerr << "Unknown parameters argument " << token.key << std::endl;
				        return 1;
			        }
		        }
		        return 0;
	        });

	opt.add("version", no_argument, 'v',
	        "Print version information and exit.",
	        [&]()
	        {
		        std::cout << version();
		        std::cout << copyright();
		        exit(0);
		        return 0;
	        });

	opt.add("help", no_argument, 'h',
	        "Print this message and exit.",
	        [&]()
	        {
		        std::cout << version();
		        std::cout << usage(argv[0]);
		        std::cout << "Options:\n";
		        opt.help();
		        std::cout << "\nParameters:\n";
		        std::cout << arguments();
		        exit(0);
		        return 0;
	        });

	if(opt.process(argc, argv) != 0)
	{
		return 1;
	}
	hug_status_t status = hug_init(hugin_flags, HUG_OPTION_FILTER,
	                               hugin_filter.data(), HUG_OPTION_END);
	if(status != HUG_STATUS_OK)
	{
		std::cerr << "Error: " << status << std::endl;
		return 1;
	}
	DEBUG(drumgizmo, "Debug enabled.");

	if(opt.arguments().empty())
	{
		std::cerr << "Missing kitfile." << std::endl;
		std::cerr << usage(argv[0]) << std::endl;
		return 1;
	}
	else if(opt.arguments().size() > 1)
	{
		std::cerr << "Can only handle a single kitfile." << std::endl;
		std::cerr << usage(argv[0]) << std::endl;
		return 1;
	}
	else
	{
		kitfile = opt.arguments()[0];
		std::ifstream tmp_kit(kitfile);
		if(!tmp_kit.good())
		{
			std::cerr << "Can not open " << kitfile << std::endl;
			return 1;
		}
	}

	if(ie == nullptr)
	{
		std::cerr << "No input engine selected.\n";
		std::cout << usage(argv[0]);
		return 1;
	}

	if(oe == nullptr)
	{
		std::cerr << "No output engine selected.\n";
		std::cout << usage(argv[0]);
		return 1;
	}

	std::cout << "Using kitfile: " << kitfile << std::endl;

	DrumGizmo gizmo(settings, *oe.get(), *ie.get());

	gizmo.setFrameSize(oe->getBufferSize());

	settings.drumkit_file.store(kitfile);
	settings.reload_counter++;

	std::cout << "Loading drumkit, this may take a while:" << std::endl;

	if(!async)
	{
		while(settings.drumkit_load_status.load() != LoadStatus::Done)
		{
			std::this_thread::sleep_for(std::chrono::milliseconds(10));

			int total = settings.number_of_files.load();
			int loaded =  settings.number_of_files_loaded.load();

			std::cout << "\r" << loaded << " of " << total << std::flush;

			if(settings.drumkit_load_status.load() == LoadStatus::Error)
			{
				std::cout << "\nFailed to load " << kitfile << std::endl;
				return 1;
			}

			if(loaded == total)
			{
				//break;
			}
		}
		std::cout << "\ndone" << std::endl;
	}
	else
	{
		// Async loading in progress

		// Wait until the loader has passed the kit parsing step before proceeding.
		bool parsing_done{false};
		while(!parsing_done)
		{
			std::this_thread::sleep_for(std::chrono::milliseconds(10));

			switch(settings.drumkit_load_status.load())
			{
			case LoadStatus::Idle:
			case LoadStatus::Parsing:
				// Not yet past the parsing step
				break;
			case LoadStatus::Loading:
			case LoadStatus::Done:
				// Past parsing step
				parsing_done = true;
				break;
			case LoadStatus::Error:
				// Kit parser error?
				std::cout << "\nFailed to load " << kitfile << std::endl;
				return 1;
			}
		}
	}

	gizmo.setSamplerate(oe->getSamplerate());
	oe->onLatencyChange(gizmo.getLatency());

	if(!gizmo.init())
	{
		std::cout << "Failed init engine." << std::endl;
		return 1;
	}

	size_t pos = 0;
	size_t nsamples = oe->getBufferSize();
	sample_t *samples = (sample_t *)malloc(nsamples * sizeof(sample_t));

	gizmo.setFrameSize(oe->getBufferSize());

	ie->start();
	oe->start();

	while(gizmo.run(pos, samples, nsamples) == true)
	{
		pos += nsamples;
		if((endpos != -1) && (pos >= (size_t)endpos))
		{
			break;
		}
	}

	ie->stop();
	oe->stop();
	free(samples);
	std::cout << "Quit." << std::endl;
	hug_close();

	return 0;
}