aboutsummaryrefslogtreecommitdiff
path: root/externals/grill/dyn/src/main.cpp
blob: 79af2089d422fae73b01fc0218c493b104e94e94 (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
/* 

dyn~ - dynamical object management for PD

Copyright (c) 2003 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.  


-- this is all a bit hacky, but hey, it's PD! --

*/

#include <flext.h>

#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 402)
#error You need at least flext version 0.4.2
#endif

#define DYN_VERSION "0.0.3"


#if FLEXT_SYS != FLEXT_SYS_PD
#error Sorry, dyn~ works for PD only!
#endif


#include "flinternal.h"
#include <stdlib.h>

#ifdef _MSC_VER
#pragma warning(disable: 4091 4244)
#endif
#include "g_canvas.h"


class dyn:
	public flext_dsp
{
	FLEXT_HEADER_S(dyn,flext_dsp,setup)
public:
	dyn(int argc,const t_atom *argv);
	virtual ~dyn();

	void m_reset();
	void m_reload(); // refresh objects/abstractions
	void m_newobj(int argc,const t_atom *argv);
	void m_del(const t_symbol *n);
	void m_connect(int argc,const t_atom *argv) { conndis(true,argc,argv); }
	void m_disconnect(int argc,const t_atom *argv) { conndis(false,argc,argv); }
	void m_send(int argc,const t_atom *argv);
	void m_vis(bool vis);

protected:

	class obj {
	public:
		obj(const t_symbol *n,t_object *o): name(n),object(o),nxt(NULL) {}

		void Add(obj *o);

		const t_symbol *name;
		t_object *object;
		obj *nxt;
	} *root;

	obj *Find(const t_symbol *n);
	void Add(const t_symbol *n,t_object *o);

	void ToCanvas(t_object *o,t_binbuf *b,int x,int y);
	void FromCanvas(t_object *o);

	virtual bool m_method_(int n,const t_symbol *s,int argc,const t_atom *argv);
	virtual void m_dsp(int n,t_signalvec const *insigs,t_signalvec const *outsigs);
	virtual void m_signal(int n,t_sample *const *insigs,t_sample *const *outsigs);

	// proxy object
	class proxy
	{ 
	public:
		t_object obj;
		dyn *th;
		int n;
		t_sample *buf;
		t_sample defsig;

		void init(dyn *t);
		void exit();
	};

	// proxy for inbound messages
	class proxyin:
		public proxy
	{ 
	public:
		t_outlet *outlet;

		void Message(const t_symbol *s,int argc,const t_atom *argv) 
		{
			typedmess((t_pd *)&obj,(t_symbol *)s,argc,(t_atom *)argv);
		}

		void init(dyn *t,bool s);

		static void px_method(proxyin *obj,const t_symbol *s,int argc,const t_atom *argv)
		{
			outlet_anything(obj->outlet,(t_symbol *)s,argc,(t_atom *)argv);
		}

		static void dsp(proxyin *x, t_signal **sp);
	};


	// proxy for outbound messages
	class proxyout:
		public proxy
	{ 
	public:
		int outlet;

		void init(dyn *t,int o,bool s);

		static void px_method(proxyout *obj,const t_symbol *s,int argc,const t_atom *argv)
		{
			obj->th->ToOutAnything(obj->outlet,s,argc,argv);
		}

		static void dsp(proxyout *x, t_signal **sp);
	};

	static t_class *pxin_class,*pxout_class;
	static t_class *pxins_class,*pxouts_class;

	proxyin **pxin;
	proxyout **pxout;
	int m_inlets,s_inlets,m_outlets,s_outlets;
	t_canvas *canvas;

	void conndis(bool conn,int argc,const t_atom *argv);

private:
	static void setup(t_classid c);

	FLEXT_CALLBACK(m_reset)
	FLEXT_CALLBACK(m_reload)
	FLEXT_CALLBACK_V(m_newobj)
	FLEXT_CALLBACK_S(m_del)
	FLEXT_CALLBACK_V(m_connect)
	FLEXT_CALLBACK_V(m_disconnect)
	FLEXT_CALLBACK_V(m_send)
	FLEXT_CALLBACK_B(m_vis)
};

FLEXT_NEW_DSP_V("dyn~",dyn)


t_class *dyn::pxin_class = NULL,*dyn::pxout_class = NULL;
t_class *dyn::pxins_class = NULL,*dyn::pxouts_class = NULL;

void dyn::setup(t_classid c)
{
	post("");
	post("dyn~ %s - dynamic object management, (C)2003 Thomas Grill",DYN_VERSION);
	post("");

	// set up proxy class for inbound messages
	pxin_class = class_new(gensym("dyn proxy in"),NULL,NULL,sizeof(proxyin),0, A_NULL);
	add_anything(pxin_class,proxyin::px_method); 

	// set up proxy class for inbound signals
	pxins_class = class_new(gensym("dyn proxy in~"),NULL,NULL,sizeof(proxyin),0, A_NULL);
    add_dsp(pxins_class,proxyin::dsp);
    CLASS_MAINSIGNALIN(pxins_class, proxyin, defsig);

	// set up proxy class for outbound messages
	pxout_class = class_new(gensym("dyn proxy out"),NULL,NULL,sizeof(proxyout),0, A_NULL);
	add_anything(pxout_class,proxyout::px_method); 

	// set up proxy class for outbound signals
	pxouts_class = class_new(gensym("dyn proxy out~"),NULL,NULL,sizeof(proxyout),0, A_NULL);
	add_dsp(pxouts_class,proxyout::dsp);
    CLASS_MAINSIGNALIN(pxouts_class, proxyout, defsig);

	// set up dyn~
	FLEXT_CADDMETHOD_(c,0,"reset",m_reset);
	FLEXT_CADDMETHOD_(c,0,"reload",m_reload);
	FLEXT_CADDMETHOD_(c,0,"new",m_newobj);
	FLEXT_CADDMETHOD_(c,0,"del",m_del);
	FLEXT_CADDMETHOD_(c,0,"conn",m_connect);
	FLEXT_CADDMETHOD_(c,0,"dis",m_disconnect);
	FLEXT_CADDMETHOD_(c,0,"send",m_send);
	FLEXT_CADDMETHOD_(c,0,"vis",m_vis);
}


/*
There must be a separate canvas for the dynamically created objects as some mechanisms in PD
(like copy/cut/paste) get confused otherwise.
On the other hand it seems to be possible to create objects without a canvas. 
They won't receive DSP processing, though, hence it's only possible for message objects.
Problems arise when an object is not yet loaded... the canvas environment is then needed to
load it.. if there is no canvas, PD currently crashes.


How to create the canvas:
1) via direct call to canvas_new()
2) a message to pd_canvasmaker
	con: does not return a pointer for the created canvas

There are two possibilities for the canvas
1) make a sub canvas to the one where dyn~ resides:
	pro: no problems with environment (abstractions are found and loaded correctly)
2) make a root canvas:
	pro: it will be in the canvas list per default, hence DSP is processed
	con: canvas environment must be created manually 
			(is normally done by pd_canvasmaker if there is a directory set, which is again done somewhere else)

Enabling DSP on the subcanvas
1) send it a "dsp" message (see rabin~ by K.Czaja)... but, which signal vector should be taken?
	-> answer: NONE!  (just send NULL)
2) add it to the list of _root_ canvases (these will be DSP-processed per default)
	(for this the canvas_addtolist and canvas_takefromlist functions are used)
	however, it's not clear if this can lead to problems since it is no root-canvas!

In all cases the 1)s have been chosen as the cleaner solution
*/

dyn::dyn(int argc,const t_atom *argv):
	root(NULL),
	canvas(NULL),
	pxin(NULL),pxout(NULL)
{
	if(argc < 4) { 
		post("%s - Syntax: dyn~ sig-ins msg-ins sig-outs msg-outs",thisName());
		InitProblem(); 
		return; 
	}

	s_inlets = GetAInt(argv[0]);
	m_inlets = GetAInt(argv[1]);
	s_outlets = GetAInt(argv[2]);
	m_outlets = GetAInt(argv[3]);

	int i;

	// make a sub-canvas for dyn~
	t_atom arg[6];
	SetInt(arg[0],0);	// xpos
	SetInt(arg[1],0);	// ypos
	SetInt(arg[2],700);	// xwidth 
	SetInt(arg[3],520);	// xwidth 
	SetString(arg[4]," dyn~-canvas ");	// canvas name
	SetInt(arg[5],0);	// visible

	canvas = canvas_new(NULL, NULL, 6, arg);
	// must do that....
	canvas_unsetcurrent(canvas);

	pxin = new proxyin *[s_inlets+m_inlets];
	for(i = 0; i < s_inlets+m_inlets; ++i) {
		bool sig = i < s_inlets;
		pxin[i] = (proxyin *)object_new(sig?pxins_class:pxin_class);
		pxin[i]->init(this,sig);
		t_binbuf *b = binbuf_new();
		binbuf_text(b,(char *)(sig?"dyn-in~":"dyn-in"),7);
		ToCanvas(&pxin[i]->obj,b,i*100,10); // place them left-to-right 
	}

	pxout = new proxyout *[s_outlets+m_outlets];
	for(i = 0; i < s_outlets+m_outlets; ++i) {
		bool sig = i < s_outlets;
		pxout[i] = (proxyout *)object_new(sig?pxouts_class:pxout_class);
		pxout[i]->init(this,i,sig);
		t_binbuf *b = binbuf_new();
		binbuf_text(b,(char *)(sig?"dyn-out~":"dyn-out"),8);
		ToCanvas(&pxout[i]->obj,b,i*100,500); // place them left-to-right 
	}

	AddInSignal("Messages (new,del,conn,dis)");
	AddInSignal(s_inlets);
	AddInAnything(m_inlets);
	AddOutSignal(s_outlets);
	AddOutAnything(m_outlets);
}

dyn::~dyn()
{
	m_reset();

	if(pxin) {
		for(int i = 0; i < s_inlets+m_inlets; ++i)
			if(pxin[i])	{ pxin[i]->exit(); FromCanvas(&pxin[i]->obj); }
		delete[] pxin;
	}
	if(pxout) {
		for(int i = 0; i < s_outlets+m_outlets; ++i)
			if(pxout[i]) { pxout[i]->exit(); FromCanvas(&pxout[i]->obj); }
		delete[] pxout;
	}

	if(canvas) {
		pd_free((t_pd *)canvas);
	}
}


void dyn::obj::Add(obj *o) {	if(nxt) nxt->Add(o); else nxt = o; }

dyn::obj *dyn::Find(const t_symbol *n)
{
	obj *o;
	for(o = root; o && o->name != n; o = o->nxt) {}
	return o;
}

void dyn::Add(const t_symbol *n,t_object *ob)
{
	obj *o = new obj(n,ob);
	if(root) root->Add(o); else root = o;
}

void dyn::ToCanvas(t_object *o,t_binbuf *b,int x,int y)
{
	// add object to the glist.... this is needed for graphical representation
	// which is needed to have all connections be properly deleted
	
	o->te_binbuf = b; 
	o->te_xpix = x,o->te_ypix = y;
	o->te_width = 0;
	o->te_type = T_OBJECT;

	glist_add(canvas, &o->te_g);
}

void dyn::FromCanvas(t_object *o)
{
	glist_delete(canvas,&o->te_g);
}

void dyn::m_reset()
{
	obj *o = root;
	while(o) {
		FromCanvas(o->object);
		obj *n = o->nxt;
		delete o; 
		o = n;
	}
	root = NULL; 
}

void dyn::m_vis(bool vis)
{
	canvas_vis(canvas,vis?1:0);
}

void dyn::m_reload()
{
	post("%s - reload: not implemented yet",thisName());
}


void dyn::m_newobj(int _argc_,const t_atom *_argv_)
{
	int argc = 0;
	const t_atom *argv = NULL;
	int posx,posy;

	if(_argc_ >= 4 && CanbeInt(_argv_[0]) && CanbeInt(_argv_[1]) && IsSymbol(_argv_[2]) && IsSymbol(_argv_[3])) {
		posx = GetAInt(_argv_[0]);
		posy = GetAInt(_argv_[1]);
		argc = _argc_-2;
		argv = _argv_+2;
	}
	else if(_argc_ >= 2 && IsSymbol(_argv_[0]) && IsSymbol(_argv_[1])) {
		// random position if not given
		posx = rand()%600;
		posy = 50+rand()%400;
		argc = _argc_;
		argv = _argv_;
	}

	if(argv) {
		const t_symbol *name = GetSymbol(argv[0]);

		if(Find(name)) 
			post("%s - new: object \"%s\" is already present",thisName(),GetString(name));
		else {
			// now set canvas 
			canvas_setcurrent(canvas); 

			t_binbuf *b = binbuf_new();
			// make arg list
			binbuf_add(b,argc-1,(t_atom *)argv+1);
			// send message to object maker
			binbuf_eval(b,&pd_objectmaker,0,NULL);

			// look for latest created object
			t_object *x = (t_object *)pd_newest();
			if(x) {
				// place it
				ToCanvas(x,b,posx,posy);
				// add to database
				Add(name,x);

				// send loadbang (if it is an abstraction)
				if(pd_class(&x->te_g.g_pd) == canvas_class) {
					// loadbang the abstraction
					pd_vmess((t_pd *)x,gensym("loadbang"),"");			
				}

				// restart dsp - that's necessary because ToCanvas is called manually
				canvas_update_dsp();
			}
			else {
				post("%s - new: Could not create object",thisName());
				binbuf_free(b);
			}

			// pop the dyn~ canvas 
			canvas_unsetcurrent(canvas); 
		}
	}
	else
		post("%s - new name object [args]",thisName());
}

void dyn::m_del(const t_symbol *n)
{
	obj *p = NULL,*o = root;
	for(; o && o->name != n; p = o,o = o->nxt) {}

	if(o) {
		if(p) p->nxt = o->nxt; else root = o->nxt;

		FromCanvas(o->object);
		delete o;
	}
	else
		post("%s - del: object not found",thisName());
}

void dyn::conndis(bool conn,int argc,const t_atom *argv)
{
	const t_symbol *s_n = NULL,*d_n = NULL;
	int s_x,d_x;

	if(argc == 4 && IsSymbol(argv[0]) && CanbeInt(argv[1]) && IsSymbol(argv[2]) && CanbeInt(argv[3])) {
		s_n = GetSymbol(argv[0]);
		s_x = GetAInt(argv[1]);
		d_n = GetSymbol(argv[2]);
		d_x = GetAInt(argv[3]);
	}
	else if(argc == 3 && CanbeInt(argv[0]) && IsSymbol(argv[1]) && CanbeInt(argv[2])) {
		s_n = NULL;
		s_x = GetAInt(argv[0]);
		d_n = GetSymbol(argv[1]);
		d_x = GetAInt(argv[2]);
	}
	else if(argc == 3 && IsSymbol(argv[0]) && CanbeInt(argv[1]) && CanbeInt(argv[2])) {
		s_n = GetSymbol(argv[0]);
		s_x = GetAInt(argv[1]);
		d_n = NULL;
		d_x = GetAInt(argv[2]);
	}
	else if(argc == 2 && CanbeInt(argv[0]) && CanbeInt(argv[1])) {
		// direct connection from proxy-in to proxy-out (for testing above all....)
		s_n = NULL;
		s_x = GetAInt(argv[0]);
		d_n = NULL;
		d_x = GetAInt(argv[1]);
	}
	else {
		post("%s - connect: [src] srcslot [dst] dstslot",thisName());
		return;
	}

	t_object *s_obj,*d_obj;
	if(s_n) {
		obj *s_o = Find(s_n);
		if(!s_o) { 
			post("%s - connect: source \"%s\" not found",thisName(),GetString(s_n));
			return;
		}
		s_obj = s_o->object;
	}
	else if(s_x < 0 && s_x >= s_inlets+m_inlets) {
		post("%s - connect: inlet %i out of range (0..%i)",thisName(),s_x,s_inlets+m_inlets-1);
		return;
	}
	else {
		s_obj = &pxin[s_x]->obj;
		s_x = 0; // always 0 for proxy
	}

	if(d_n) {
		obj *d_o = Find(d_n);
		if(!d_o) { 
			post("%s - connect: destination \"%s\" not found",thisName(),GetString(d_n));
			return;
		}
		d_obj = d_o->object;
	}
	else if(d_x < 0 && d_x >= s_outlets+m_outlets) {
		post("%s - connect: outlet %i out of range (0..%i)",thisName(),d_x,s_outlets+m_outlets-1);
		return;
	}
	else  {
		d_obj = &pxout[d_x]->obj;
		d_x = 0; // always 0 for proxy
	}

#ifndef NO_VIS
	int s_oix = canvas_getindex(canvas,&s_obj->ob_g);
	int d_oix = canvas_getindex(canvas,&d_obj->ob_g);
#endif

    if(conn) {
		if(!canvas_isconnected(canvas,s_obj,s_x,d_obj,d_x)) {
#ifdef NO_VIS
			if(!obj_connect(s_obj, s_x, d_obj, d_x))
				post("%s - connect: connection could not be made",thisName());
#else
			canvas_connect(canvas,s_oix,s_x,d_oix,d_x);
#endif
		}
	}
	else {
#ifdef NO_VIS
		obj_disconnect(s_obj, s_x, d_obj, d_x);
#else
		canvas_disconnect(canvas,s_oix,s_x,d_oix,d_x);
#endif
	}
}


bool dyn::m_method_(int n,const t_symbol *s,int argc,const t_atom *argv)
{
	if(n == 0) 
		// messages into inlet 0 are for dyn~
		return flext_base::m_method_(n,s,argc,argv);
	else {
		// all other messages are forwarded to proxies (and connected objects)
		pxin[n-1]->Message(s,argc,argv);
		return true;
	}
}


void dyn::m_send(int argc,const t_atom *argv)
{
	if(argc < 2 || !IsSymbol(argv[0])) 
		post("%s - Syntax: send name message [args]",thisName());
	else {
		obj *o = Find(GetSymbol(argv[0]));
		if(!o)
			post("%s - send: object \"%s\" not found",thisName(),GetString(argv[0]));
		else
			pd_forwardmess((t_pd *)o->object,argc-1,(t_atom *)argv+1);
	}
}


void dyn::proxy::init(dyn *t) 
{ 
	th = t; 
	n = 0,buf = NULL;
	defsig = 0;
}

void dyn::proxy::exit() { if(buf) delete[] buf; }

	
void dyn::proxyin::dsp(proxyin *x,t_signal **sp)
{
	int n = sp[0]->s_n;
	if(n != x->n) {
		// if vector size has changed make new buffer
		if(x->buf) delete[] x->buf;
		x->buf = new t_sample[x->n = n];
	}
	dsp_add_copy(x->buf,sp[0]->s_vec,n);
}

void dyn::proxyin::init(dyn *t,bool s) 
{ 
	proxy::init(t);
	outlet = outlet_new(&obj,s?&s_signal:&s_anything); 
}



	
void dyn::proxyout::dsp(proxyout *x,t_signal **sp)
{
	int n = sp[0]->s_n;
	if(n != x->n) {
		// if vector size has changed make new buffer
		if(x->buf) delete[] x->buf;
		x->buf = new t_sample[x->n = n];
	}
	dsp_add_copy(sp[0]->s_vec,x->buf,n);
}

void dyn::proxyout::init(dyn *t,int o,bool s) 
{ 
	proxy::init(t);
	outlet = o;
	if(s) outlet_new(&obj,&s_signal); 
}


void dyn::m_dsp(int n,t_signalvec const *insigs,t_signalvec const *outsigs)
{
	// add sub canvas to dsp list (no signal vector to borrow from .. set it to NULL)
//    mess1((t_pd *)canvas, gensym("dsp"),NULL);

	flext_dsp::m_dsp(n,insigs,outsigs);
}
    
void dyn::m_signal(int n,t_sample *const *insigs,t_sample *const *outsigs)
{
	int i;
	for(i = 0; i < s_inlets; ++i)
		if(pxin[i]->buf)
		CopySamples(pxin[i]->buf,insigs[i+1],n);
	for(i = 0; i < s_outlets; ++i)
		if(pxout[i]->buf)
		CopySamples(outsigs[i],pxout[i]->buf,n);
}