aboutsummaryrefslogtreecommitdiff
path: root/modules/image_io/pdp_glx.c
blob: 81ec2d9bd791124c8b03963fc7d5b1030bc77b1d (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
/*
 *   Pure Data Packet module.
 *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
 *
 *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

// gl stuff
#include <GL/gl.h>
#include <GL/glx.h>
#include <GL/glu.h>
//#include <GL/glut.h>

// pdp stuff
#include "pdp.h"
#include "pdp_base.h"

// some x window glue code
#include "pdp_xwindow.h"

// pdp stuff
#include "pdp.h"
#include "pdp_llconv.h"
//#include "pdp_opengl.h"


/* initial image dimensions */
#define PDP_OGL_W 320
#define PDP_OGL_H 240

#define PDP_OGL_AUTOCREATE_RETRY 10


typedef struct pdp_glx_struct
{
    t_object x_obj;

    t_pdp_xwindow *x_xwin;

    t_outlet *x_outlet;

    int x_packet0;
    int x_queue_id;
    t_symbol *x_display;

    t_pdp_xdisplay *x_xdpy;

    XVisualInfo *x_vis_info;
    GLXContext x_glx_context;

    GLuint x_texture;
    u32 x_tex_width;
    u32 x_tex_height;

    unsigned char *x_data;
    unsigned int x_width;
    unsigned int x_height;
    int x_last_encoding;

    int  x_initialized;
    int  x_autocreate;
    int  x_interpol;

} t_pdp_glx;



static void pdp_glx_cursor(t_pdp_glx *x, t_floatarg f)
{
    if (x->x_initialized)
	pdp_xwindow_cursor(x->x_xwin, f);
}

static void pdp_glx_destroy(t_pdp_glx* x)
{
    t_pdp_procqueue *q = pdp_queue_get_queue();
    XEvent e;

    if (x->x_initialized){
	pdp_procqueue_finish(q, x->x_queue_id);
	x->x_queue_id = -1;
	glXDestroyContext(x->x_xdpy->dpy, x->x_glx_context);
	pdp_xwindow_free(x->x_xwin);
	pdp_xdisplay_free(x->x_xdpy);
	x->x_xwin = 0;
	x->x_xdpy = 0;
	x->x_initialized = false;
    }

}


static void pdp_glx_fullscreen(t_pdp_glx *x)
{
    if (x->x_initialized)
	pdp_xwindow_fullscreen(x->x_xwin);
}

static void pdp_glx_resize(t_pdp_glx* x, t_floatarg width, t_floatarg height)
{
    if (x->x_initialized)
	pdp_xwindow_resize(x->x_xwin, width, height);
}

static void pdp_glx_move(t_pdp_glx* x, t_floatarg width, t_floatarg height)
{
    if (x->x_initialized)
	pdp_xwindow_move(x->x_xwin, width, height);
}

static void pdp_glx_moveresize(t_pdp_glx* x, t_floatarg xoff, t_floatarg yoff, t_floatarg width, t_floatarg height)
{
    if (x->x_initialized)
	pdp_xwindow_moveresize(x->x_xwin, xoff, yoff, width, height);
}

static void pdp_glx_tile(t_pdp_glx* x, t_floatarg xtiles, t_floatarg ytiles, t_floatarg i, t_floatarg j)
{
    if (x->x_initialized)
	pdp_xwindow_tile(x->x_xwin, xtiles, ytiles, i, j);
}




void pdp_glx_generate_texture(t_pdp_glx *x)
{
    u32 width = x->x_tex_width;
    u32 height = x->x_tex_height;
    u32 depth = 4;
    u32 i;

    u8 *dummydata = 0;

    while (x->x_width > width) width <<= 1;
    while (x->x_height > height) height <<= 1;

    dummydata = (u8 *)pdp_alloc(width*height*depth);

    for (i=0; i<width*height*depth; i++){dummydata[i] = random(); }

    /* set window context current */
    glXMakeCurrent(x->x_xdpy->dpy, x->x_xwin->win, x->x_glx_context);

    /* generate texture if necessary */
    if (!glIsTexture(x->x_texture)) glGenTextures(1, &(x->x_texture));

    glBindTexture(GL_TEXTURE_2D, x->x_texture);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, dummydata);

    pdp_dealloc(dummydata);

    x->x_tex_width = width;
    x->x_tex_height = height;
}

void pdp_glx_regenerate_texture(t_pdp_glx *x)
{
    if ((x->x_width > x->x_tex_width) || (x->x_height > x->x_tex_height)) pdp_glx_generate_texture(x);

}


static void pdp_glx_create(t_pdp_glx* x)
{
    unsigned int *uintdata = (unsigned int *)(x->x_data);
    XEvent e;
    unsigned int i;
    static int vis_attr[] = {GLX_RGBA, GLX_RED_SIZE, 4, GLX_GREEN_SIZE, 4, GLX_BLUE_SIZE, 4, 
			     GLX_DEPTH_SIZE, 16, GLX_DOUBLEBUFFER, None};


    if (x->x_initialized) return;

    /* manually open a display */
    if (NULL == (x->x_xdpy = pdp_xdisplay_new(x->x_display->s_name))){
	post("pdp_glx: cant open display %s\n",x->x_display->s_name);
	x->x_initialized = false;
	return;
    }

    /* create a window on the display */
    x->x_xwin = pdp_xwindow_new();
    if (!(x->x_initialized = pdp_xwindow_create_on_display(x->x_xwin, x->x_xdpy))) 
	goto exit_error;


    /* create a glx visual */
    if (!(x->x_vis_info = glXChooseVisual(x->x_xdpy->dpy, x->x_xdpy->screen, vis_attr))){
	post("pdp_glx: can't create visual");
	goto exit_error;
    }
    //post("visual: %x", x->x_vis_info);

    /* create the rendering context */
    if (!(x->x_glx_context = glXCreateContext(x->x_xdpy->dpy, x->x_vis_info,  0 /*share list*/, GL_TRUE))){
	post("pdp_glx: can't create render context");
	goto exit_error;
    }
    //post("context: %x", x->x_glx_context);


    /* create texture */
    pdp_glx_generate_texture(x);


    /* we're done initializing */
    x->x_initialized = true;

    /* disable/enable cursor */
    //pdp_glx_cursor(x, x->x_cursor);
    return;


 exit_error:
    if (x->x_xwin){
	pdp_xwindow_free(x->x_xwin);
	x->x_xwin = 0;
    }
    
    if (x->x_xdpy){
	pdp_xdisplay_free(x->x_xdpy);
	x->x_xdpy = 0;
    }
    
    x->x_initialized = false;
    return;
}

static int pdp_glx_try_autocreate(t_pdp_glx *x)
{

    if (x->x_autocreate){
	post("pdp_glx: autocreate window");
	pdp_glx_create(x);
	if (!(x->x_initialized)){
#ifdef __APPLE__
	    system("/usr/bin/open /Applications/Utilities/X11.app &");
#endif
	    x->x_autocreate--;
	    if (!x->x_autocreate){
		post ("pdp_glx: autocreate failed %d times: disabled", PDP_OGL_AUTOCREATE_RETRY);
		post ("pdp_glx: send [autocreate 1] message to re-enable");
		return 0;
	    }
	}
	else return 1;

    }
    return 0;
}

static void pdp_glx_bang(t_pdp_glx *x);

static void pdp_glx_fill_texture(t_pdp_glx *x)
{
    t_pdp *header = pdp_packet_header(x->x_packet0);
    void  *data   = pdp_packet_data  (x->x_packet0);

    int i = header->info.image.width;


    /* ensure image buffer is correct dim */
    if ((header->info.image.width != x->x_width) 
	|| (header->info.image.height != x->x_height)) {
	if (x->x_data) pdp_dealloc (x->x_data);
	x->x_width = header->info.image.width;
	x->x_height = header->info.image.height;
	x->x_data = pdp_alloc(4*x->x_width*x->x_height);
    }

    /* ensure texture is correct dim */
    pdp_glx_regenerate_texture(x);
    

    /* set window context current */
    glXMakeCurrent(x->x_xdpy->dpy, x->x_xwin->win, x->x_glx_context);
    glBindTexture(GL_TEXTURE_2D, x->x_texture);

    switch (header->info.image.encoding){
    case PDP_IMAGE_GREY:
	/* convert image to greyscale 8 bit */
	pdp_llconv(data,RIF_GREY______S16, x->x_data, RIF_GREY______U8, x->x_width, x->x_height);

	/* upload grey subtexture */
	glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, x->x_width, x->x_height, GL_LUMINANCE, GL_UNSIGNED_BYTE, x->x_data);
	    
	break;
    case PDP_IMAGE_YV12:

	/* convert image to rgb 8 bit */
	pdp_llconv(data,RIF_YVU__P411_S16, x->x_data,  RIF_RGB__P____U8, x->x_width, x->x_height);

	/* upload subtexture */
	glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, x->x_width, x->x_height, GL_RGB, GL_UNSIGNED_BYTE, x->x_data);
	
	break;
    default:
	break;
    }

    
}

static void pdp_glx_process(t_pdp_glx *x)
{
    t_pdp *header = pdp_packet_header(x->x_packet0);
    void  *data   = pdp_packet_data  (x->x_packet0);


    if (-1 != x->x_queue_id) return;

    /* check if window is initialized */
    if (!(x->x_initialized)){
        if (!pdp_glx_try_autocreate(x)) return;
    }

    /* check data packet */
    if (!(header)) {
	post("pdp_glx: invalid packet header");
	return;
    }
    if (PDP_IMAGE != header->type) {
	post("pdp_glx: packet is not a PDP_IMAGE");
	return;
    }
    if ((PDP_IMAGE_YV12 != header->info.image.encoding)
	&& (PDP_IMAGE_GREY != header->info.image.encoding)) {
	post("pdp_glx: packet is not a PDP_IMAGE_YV12/GREY");
	return;
    }

    
    /* fill the texture with the data in the packet */
    pdp_glx_fill_texture(x);

    /* display the new image */
    pdp_glx_bang(x);


}



static void pdp_glx_display_texture(t_pdp_glx *x)
{
    float fx = (float)x->x_width / x->x_tex_width;
    float fy = (float)x->x_height / x->x_tex_height;

    if (!x->x_initialized) return;

    /* set window context current */
    glXMakeCurrent(x->x_xdpy->dpy, x->x_xwin->win, x->x_glx_context);

    /* setup viewport, projection and modelview */
    glViewport(0, 0, x->x_xwin->winwidth, x->x_xwin->winheight);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0.0, x->x_xwin->winwidth, 0.0, x->x_xwin->winheight);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();


    /* enable default texture */
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, x->x_texture);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    if (x->x_interpol){
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
    }
    else {
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
    }


    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

    /* display texture */  
    glBegin(GL_QUADS);
        glTexCoord2f(fx, fy);
        glVertex2i(x->x_xwin->winwidth,0);
        glTexCoord2f(fx, 0);
	glVertex2i(x->x_xwin->winwidth, x->x_xwin->winheight);
        glTexCoord2f(0.0, 0.0);
	glVertex2i(0, x->x_xwin->winheight);
        glTexCoord2f(0, fy);
	glVertex2i(0,0);
    glEnd();


    glFlush();
    glXSwapBuffers(x->x_xdpy->dpy,x->x_xwin->win);

}



/* redisplays image */
static void pdp_glx_bang_thread(t_pdp_glx *x)
{


    pdp_glx_display_texture(x);
    XFlush(x->x_xdpy->dpy);

}

static void pdp_glx_bang_callback(t_pdp_glx *x)
{
    /* receive events + send to outputs */
    t_pdp_list *eventlist = pdp_xwindow_get_eventlist(x->x_xwin);
    t_pdp_atom *a;

    for (a=eventlist->first; a; a=a->next){
	//pdp_list_print(a->w.w_list);
	outlet_pdp_list(x->x_outlet, a->w.w_list);
    }

    /* free list */
    pdp_tree_free(eventlist);

    /* release the packet if there is one */
    pdp_packet_mark_unused(x->x_packet0);
    x->x_packet0 = -1;

}
static void pdp_glx_bang(t_pdp_glx *x)
{

    /* check if window is initialized */
    if (!(x->x_initialized)){
        if (!pdp_glx_try_autocreate(x)) return;
    }


    /* if previous queued method returned
       schedule a new one, else ignore */

/*
    if (-1 == x->x_queue_id) {
	pdp_queue_add(x, pdp_glx_bang_thread, pdp_glx_bang_callback, &x->x_queue_id);
    }
*/
    /* don't process in thread */
    pdp_glx_bang_thread(x);
    pdp_glx_bang_callback(x);
    
}



static void pdp_glx_input_0(t_pdp_glx *x, t_symbol *s, t_floatarg f)
{

    if (s == gensym("register_ro")) pdp_packet_copy_ro_or_drop(&x->x_packet0, (int)f);
    if (s == gensym("process")) pdp_glx_process(x);
}



static void pdp_glx_vga(t_pdp_glx *x)
{
    pdp_glx_resize(x, 640, 480);
}

static void pdp_glx_autocreate(t_pdp_glx *x, t_floatarg f)
{
  if (f != 0.0f) x->x_autocreate = PDP_OGL_AUTOCREATE_RETRY;
  else x->x_autocreate = 0;
}

static void pdp_glx_display(t_pdp_glx *x, t_symbol *s)
{
    t_pdp_procqueue *q = pdp_queue_get_queue();
    pdp_procqueue_finish(q, x->x_queue_id);
    x->x_queue_id = -1;
    x->x_display = s;
    if (x->x_initialized){
	pdp_glx_destroy(x);
	pdp_glx_create(x);
    }
}

static void pdp_glx_interpol(t_pdp_glx *x, t_float finterpol){
    x->x_interpol = (int)finterpol;
}


static void pdp_glx_free(t_pdp_glx *x)
{
    t_pdp_procqueue *q = pdp_queue_get_queue();
    pdp_procqueue_finish(q, x->x_queue_id);
    pdp_glx_destroy(x);
    if (x->x_data) pdp_dealloc (x->x_data);
    pdp_packet_mark_unused(x->x_packet0);
}

t_class *pdp_glx_class;



void *pdp_glx_new(void)
{
    t_pdp_glx *x = (t_pdp_glx *)pd_new(pdp_glx_class);

    x->x_xwin = 0;
    x->x_xdpy = 0;

    x->x_outlet = outlet_new(&x->x_obj, &s_anything);

    x->x_packet0 = -1;
    x->x_queue_id = -1;
    x->x_display = gensym(":0");

    x->x_width = PDP_OGL_W;
    x->x_height = PDP_OGL_H;

    x->x_data = pdp_alloc(4*PDP_OGL_W*PDP_OGL_H);

    x->x_initialized = 0;
    pdp_glx_autocreate(x,1);
    x->x_last_encoding = -1;

    x->x_tex_width = 64;
    x->x_tex_height = 64;

    x->x_interpol = 1;

    //pdp_glx_create(x);

    return (void *)x;
}





#ifdef __cplusplus
extern "C"
{
#endif


void pdp_glx_setup(void)
{


    pdp_glx_class = class_new(gensym("pdp_glx"), (t_newmethod)pdp_glx_new,
    	(t_method)pdp_glx_free, sizeof(t_pdp_glx), 0, A_NULL);

    /* add creator for pdp_tex_win */

    class_addmethod(pdp_glx_class, (t_method)pdp_glx_bang, gensym("bang"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_create, gensym("open"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_create, gensym("create"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_autocreate, gensym("autocreate"), A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_destroy, gensym("destroy"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_destroy, gensym("close"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_move, gensym("move"), A_FLOAT, A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_move, gensym("pos"), A_FLOAT, A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_resize, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_resize, gensym("size"), A_FLOAT, A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_display, gensym("display"), A_SYMBOL, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_cursor, gensym("cursor"), A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_fullscreen, gensym("fullscreen"), A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_moveresize, gensym("posdim"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_interpol, gensym("interpol"), A_FLOAT, A_NULL);
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_tile, gensym("tile"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, A_NULL);


    /* accept both pdp and pdp_tex packets */
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);


    /* some shortcuts for the lazy */
    class_addmethod(pdp_glx_class, (t_method)pdp_glx_vga, gensym("vga"), A_NULL);

}

#ifdef __cplusplus
}
#endif