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
|
/*
* 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 ASCII art object replacing blocks with ASCII characters
* Written by Yves Degoyon ( ydegoyon@free.fr )
*/
#include "pdp.h"
#include "yuv.h"
#include "charmaps.h"
#include <math.h>
static char *pdp_ascii_version = "pdp_ascii: version 0.1, ASCII art output written by ydegoyon@free.fr";
typedef struct pdp_ascii_struct
{
t_object x_obj;
t_float x_f;
t_int x_packet0;
t_int x_packet1;
t_int x_dropped;
t_int x_queue_id;
t_outlet *x_outlet0;
t_int x_vwidth;
t_int x_vheight;
t_int x_vsize;
t_int x_color; // rendering color option
t_int x_brightness; // added value for brightness
t_float x_ratio; // character to pixel ratio
} t_pdp_ascii;
static void pdp_ascii_color(t_pdp_ascii *x, t_floatarg fcolor)
{
if ( ((int)fcolor == 0) || ((int)fcolor == 1) )
{
x->x_color = (int)fcolor;
}
}
static void pdp_ascii_ratio(t_pdp_ascii *x, t_floatarg fratio)
{
if ( ( fratio > 0) && ( x->x_ratio < x->x_vwidth/2 ) )
{
x->x_ratio = fratio;
}
}
static void pdp_ascii_brightness(t_pdp_ascii *x, t_floatarg fbrightness)
{
if ( ((int)fbrightness > 0) && ((int)fbrightness < 255) )
{
x->x_brightness = (int)fbrightness;
}
}
static void pdp_ascii_process_yv12(t_pdp_ascii *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);
t_int i, pixsum;
t_int px, py, ppx, ppy;
t_int rank, value;
t_int pwidth, pheight;
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
x->x_vsize = x->x_vwidth*x->x_vheight;
newheader->info.image.encoding = header->info.image.encoding;
newheader->info.image.width = x->x_vwidth;
newheader->info.image.height = x->x_vheight;
memset( newdata, 0x00, (x->x_vsize+(x->x_vsize>>1))<<1 );
pwidth = (int) CHARWIDTH*x->x_ratio;
if (pwidth==0) pwidth=1;
if (pwidth>x->x_vwidth) return;
pheight = (int) CHARHEIGHT*x->x_ratio;
if (pheight==0) pheight=1;
if (pheight>x->x_vheight) return;
for(py=1; py<x->x_vheight; py+=pheight)
{
for(px=0; px<x->x_vwidth; px+=pwidth)
{
pixsum = 0;
for ( ppy=0; ppy<pheight; ppy++ )
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
pixsum += (data[(py+ppy)*x->x_vwidth + (px+ppx)]>>7);
}
}
rank = (pixsum/(pheight*pwidth))/2; // set the chosen character
for ( ppy=0; ppy<pheight; ppy++ )
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
if ( ( px+ppx > x->x_vwidth ) ||
( py+ppy > x->x_vheight ) )
{
break;
}
if ( charmaps[rank][((int)(ppy/x->x_ratio))*CHARWIDTH+((int)(ppx/x->x_ratio))] )
{
value = ( (2*rank+x->x_brightness) > 255 ) ? 255 : (2*rank+x->x_brightness);
newdata[(py+ppy)*x->x_vwidth+(px+ppx)] = (value)<<7;
if ( x->x_color )
{
newdata[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] =
data[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)];
newdata[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] =
data[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)];
}
}
}
}
}
}
return;
}
static void pdp_ascii_sendpacket(t_pdp_ascii *x)
{
/* delete source 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_ascii_process(t_pdp_ascii *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_ascii_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_ascii_process_yv12, pdp_ascii_sendpacket, &x->x_queue_id);
break;
case PDP_IMAGE_GREY:
// should write something to handle these one day
// but i don't use this mode
break;
default:
/* don't know the type, so dont pdp_ascii_process */
break;
}
}
}
static void pdp_ascii_input_0(t_pdp_ascii *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_ascii_process(x);
}
}
static void pdp_ascii_free(t_pdp_ascii *x)
{
int i;
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
}
t_class *pdp_ascii_class;
void *pdp_ascii_new(void)
{
int i;
t_pdp_ascii *x = (t_pdp_ascii *)pd_new(pdp_ascii_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ratio"));
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_color = 1;
x->x_ratio = 1.;
x->x_brightness = 25;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_ascii_setup(void)
{
post( pdp_ascii_version );
pdp_ascii_class = class_new(gensym("pdp_ascii"), (t_newmethod)pdp_ascii_new,
(t_method)pdp_ascii_free, sizeof(t_pdp_ascii), 0, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_color, gensym("color"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_brightness, gensym("brightness"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_ratio, gensym("ratio"), A_DEFFLOAT, A_NULL);
}
#ifdef __cplusplus
}
#endif
|
