aboutsummaryrefslogtreecommitdiff
path: root/modules/pdp_lens.c
blob: 072d8d07875c3921a4846f263f54b0914b1a265d (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
/*
 *   PiDiP module.
 *   Copyright (c) by Yves Degoyon (ydegoyon@free.fr)
 *
 *   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.
 *
 */

/*  This object is an adaptation of lens effect from effectv
 *  Originally written by Fukuchi Kentaro & others
 *  Pd-fication by Yves Degoyon                                 
 */



#include "pdp.h"
#include <math.h>

static char   *pdp_lens_version = "pdp_lens: version 0.1, port of lens from effectv( Fukuchi Kentaro ) adapted by Yves Degoyon (ydegoyon@free.fr)";

typedef struct pdp_lens_struct
{
    t_object x_obj;
    t_float x_f;

    t_outlet *x_outlet0;
    t_int x_packet0;
    t_int x_packet1;
    t_int x_dropped;
    t_int x_queue_id;

    t_int x_vwidth;
    t_int x_vheight;
    t_int x_vsize;
    t_float   x_zoom;     // zoom factor
    t_int     x_cx;       // coordinates of lens center
    t_int     x_cy;       // coordinates of lens center
    t_int     x_csize;    // width of the lens
    t_int     x_xd;
    t_int     x_yd;
    t_int     x_mode;
    t_int     *x_lens;
    t_int     x_init;

} t_pdp_lens;

static void pdp_lens_preset(t_pdp_lens *x, t_int oldsize, t_int newsize)
{
 int px, py, r;

  if ( x->x_lens ) freebytes(x->x_lens, oldsize * oldsize * sizeof( t_int) ); 
  x->x_lens = (t_int *) getbytes( newsize * newsize * sizeof( t_int ) );
  r = x->x_csize / 2;

  /* it is sufficient to generate 1/4 of the lens and reflect this
   * around; a sphere is mirrored on both the x and y axes */
  for (py = 0; py < r; py++) {
        for (px = 0; px < r; px++) {
            int ix, iy, offset, dist;
               dist = px*px + py*py - r*r;
               if(dist < 0) {
                 double shift = x->x_zoom/sqrt(x->x_zoom*x->x_zoom - dist);
                 ix = px * shift - px;
                 iy = py * shift - py;
               } else {
                ix = 0;
                iy = 0;
               }
               offset = (iy * x->x_vwidth + ix);
                        x->x_lens[(r - py)*x->x_csize + r - px] = -offset;
                        x->x_lens[(r + py)*x->x_csize + r + px] = offset;
               offset = (-iy * x->x_vwidth + ix);
                        x->x_lens[(r + py)*x->x_csize + r - px] = -offset;
                        x->x_lens[(r - py)*x->x_csize + r + px] = offset;
        }
  }
}

static void pdp_lens_cliplens(t_pdp_lens *x)
{
    if (x->x_cy<0-(x->x_csize/2)+1)x->x_cy=0-(x->x_csize/2)+1;
    if (x->x_cy>=x->x_vheight-x->x_csize/2-1)x->x_cy=x->x_vheight-x->x_csize/2-1;

    if (x->x_cx<0-(x->x_csize/2)+1) x->x_cx=0-x->x_csize/2+1;
    if(x->x_cx>=x->x_vwidth-x->x_csize/2-1) x->x_cx=x->x_vwidth-x->x_csize/2-1;
}

static void pdp_lens_zoom(t_pdp_lens *x, t_floatarg fzoom )
{
    if ( fzoom>0 )
    {
       x->x_zoom = fzoom;
       if (x->x_zoom<5) x->x_zoom=5;
       if (x->x_zoom>200) x->x_zoom=200;
       pdp_lens_preset(x, x->x_csize, x->x_csize);
    }
}

static void pdp_lens_csize(t_pdp_lens *x, t_floatarg fcsize )
{
    if ( fcsize>0 )
    {
       x->x_csize = (int)fcsize;
       if (x->x_csize>x->x_vheight) x->x_csize = x->x_vheight;
       if (x->x_csize<3) x->x_csize = 3;
       pdp_lens_preset(x, x->x_csize, x->x_csize);
       pdp_lens_cliplens(x);
    }
}

static void pdp_lens_cy(t_pdp_lens *x, t_floatarg fcy )
{
    if ( fcy>0 )
    {
       x->x_cy = (int)fcy;
       pdp_lens_cliplens(x);
    }
}

static void pdp_lens_cx(t_pdp_lens *x, t_floatarg fcx )
{
    if ( fcx>0 )
    {
       x->x_cx = (int)fcx;
       pdp_lens_cliplens(x);
    }
}

static void pdp_lens_mode(t_pdp_lens *x, t_floatarg fmode )
{
    if ( ( fmode == 0 ) || ( fmode == 1 ) )
    {
       x->x_mode = (int)fmode;
    }
}

static void pdp_lens_process_yv12(t_pdp_lens *x)
{
    t_pdp     *header = pdp_packet_header(x->x_packet0);
    short int *data   = (short int *)pdp_packet_data(x->x_packet0);
    t_pdp     *newheader = pdp_packet_header(x->x_packet1);
    short int *newdata = (short int *)pdp_packet_data(x->x_packet1);
    int       i;

    unsigned int totalnbpixels;
    unsigned int u_offset;
    unsigned int v_offset;
    unsigned int totnbpixels;
    short int *poy, *pou, *pov, *pny, *pnu, *pnv;
    int px, py;
    int noy, pos, posu, nox;
    int *p;

    x->x_vwidth = header->info.image.width;
    x->x_vheight = header->info.image.height;
    x->x_vsize = x->x_vwidth*x->x_vheight;

    if ( x->x_init == -1 )
    {
         pdp_lens_preset( x, x->x_csize, x->x_csize );
         x->x_init = 1;
    }

    totalnbpixels = x->x_vsize;
    u_offset = x->x_vsize;
    v_offset = x->x_vsize + (x->x_vsize>>2);
    totnbpixels = x->x_vsize + (x->x_vsize>>1);

    newheader->info.image.encoding = header->info.image.encoding;
    newheader->info.image.width = x->x_vwidth;
    newheader->info.image.height = x->x_vheight;

    memcpy(newdata, data, (x->x_vsize + (x->x_vsize>>1))<<1);

    p = x->x_lens;
    poy = data;
    pou = data + x->x_vsize;
    pov = data + x->x_vsize + (x->x_vsize>>2);
    pny = newdata;
    pnu = newdata + x->x_vsize;
    pnv = newdata + x->x_vsize + (x->x_vsize>>2);
    for (py = 0; py < x->x_csize; py++) 
    {
      for (px = 0; px < x->x_csize; px++) 
      {
        noy=(py+x->x_cy);  
        nox=(px+x->x_cx);
        if ((nox>=0)&&(noy>=0)&&(nox<x->x_vwidth)&&(noy<x->x_vheight)){
            pos = (noy * x->x_vwidth) + nox;
            posu = ((noy>>1) * (x->x_vwidth>>1)) + (nox>>1);
            if ( ( ( pos + *p )< x->x_vsize ) && ( pos < x->x_vsize ) ) 
            {
               *(pny+pos) = *(poy + pos + *p);
               *(pnu+posu) = *(pou + posu + *p );
               *(pnv+posu) = *(pov + posu + *p );
            }
        }
        p++;
      }
    }

    if (x->x_mode==1)
    {
       x->x_cx+= x->x_xd; x->x_cy+=x->x_yd;
       if (x->x_cx > (x->x_vwidth - x->x_csize - 5) || x->x_cx < 5) x->x_xd = -x->x_xd;
       if (x->x_cy > (x->x_vwidth - x->x_csize - 5) || x->x_cy < 5) x->x_yd = -x->x_yd;
    }

    return;
}

static void pdp_lens_sendpacket(t_pdp_lens *x)
{
    /* release the packet */
    pdp_packet_mark_unused(x->x_packet0);
    x->x_packet0 = -1;

    /* unregister and propagate if valid dest packet */
    pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet1);
}

static void pdp_lens_process(t_pdp_lens *x)
{
   int encoding;
   t_pdp *header = 0;

   /* check if image data packets are compatible */
   if ( (header = pdp_packet_header(x->x_packet0))
	&& (PDP_IMAGE == header->type)){
    
	/* pdp_lens_process inputs and write into active inlet */
	switch(pdp_packet_header(x->x_packet0)->info.image.encoding){

	case PDP_IMAGE_YV12:
            x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
            pdp_queue_add(x, pdp_lens_process_yv12, pdp_lens_sendpacket, &x->x_queue_id);
	    break;

	case PDP_IMAGE_GREY:
	    // pdp_lens_process_packet(x);
	    break;

	default:
	    /* don't know the type, so dont pdp_lens_process */
	    break;
	    
	}
    }
}

static void pdp_lens_input_0(t_pdp_lens *x, t_symbol *s, t_floatarg f)
{
    /* if this is a register_ro message or register_rw message, register with packet factory */

    if (s== gensym("register_rw"))
       x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packet0, (int)f, pdp_gensym("image/YCrCb/*") );

    if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){

        /* add the process method and callback to the process queue */
        pdp_lens_process(x);

    }
}

static void pdp_lens_free(t_pdp_lens *x)
{
  int i;

    pdp_queue_finish(x->x_queue_id);
    pdp_packet_mark_unused(x->x_packet0);
}

t_class *pdp_lens_class;

void *pdp_lens_new(void)
{
    int i;

    t_pdp_lens *x = (t_pdp_lens *)pd_new(pdp_lens_class);
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("cx"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("cy"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("csize"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("zoom"));
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("mode"));

    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 

    x->x_packet0 = -1;
    x->x_packet1 = -1;
    x->x_queue_id = -1;

    x->x_cx = x->x_cy = 16;
    x->x_xd = x->x_yd = 5;
    x->x_csize = 150;
    x->x_zoom = 30;
    x->x_init = -1;
    x->x_mode = 0;

    return (void *)x;
}


#ifdef __cplusplus
extern "C"
{
#endif


void pdp_lens_setup(void)
{
//    post( pdp_lens_version );
    pdp_lens_class = class_new(gensym("pdp_lens"), (t_newmethod)pdp_lens_new,
    	(t_method)pdp_lens_free, sizeof(t_pdp_lens), 0, A_NULL);

    class_addmethod(pdp_lens_class, (t_method)pdp_lens_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
    class_addmethod(pdp_lens_class, (t_method)pdp_lens_cx, gensym("cx"),  A_FLOAT, A_NULL);
    class_addmethod(pdp_lens_class, (t_method)pdp_lens_cy, gensym("cy"),  A_FLOAT, A_NULL);
    class_addmethod(pdp_lens_class, (t_method)pdp_lens_csize, gensym("csize"),  A_FLOAT, A_NULL);
    class_addmethod(pdp_lens_class, (t_method)pdp_lens_zoom, gensym("zoom"),  A_FLOAT, A_NULL);
    class_addmethod(pdp_lens_class, (t_method)pdp_lens_mode, gensym("mode"),  A_FLOAT, A_NULL);
    class_sethelpsymbol( pdp_lens_class, gensym("pdp_lens.pd") );

}

#ifdef __cplusplus
}
#endif