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
|
/*
* 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.
*
*/
#include "pdp.h"
typedef struct pdp_grey_struct
{
t_object x_obj;
t_float x_f;
t_outlet *x_outlet0;
int x_packet0;
} t_pdp_grey;
static void pdp_grey_process(t_pdp_grey *x)
{
t_pdp *header0 = pdp_packet_header(x->x_packet0);
t_pdp *headernew;
int newpacket;
int w;
int h;
/* check data packets */
if ((header0) && (PDP_IMAGE == header0->type)){
/* pdp_grey_process inputs and write into active inlet */
switch(header0->info.image.encoding){
case PDP_IMAGE_YV12:
w = header0->info.image.width;
h = header0->info.image.height;
newpacket = pdp_packet_new(PDP_IMAGE, w*h*2);
headernew = pdp_packet_header(newpacket);
headernew->info.image.encoding = PDP_IMAGE_GREY;
headernew->info.image.width = w;
headernew->info.image.height = h;
memcpy(pdp_packet_data(newpacket), pdp_packet_data(x->x_packet0), 2*w*h);
pdp_packet_mark_unused(x->x_packet0);
x->x_packet0 = newpacket;
break;
case PDP_IMAGE_GREY:
/* just pass along */
break;
default:
break;
/* don't know the type, so dont process */
}
}
}
static void pdp_grey_sendpacket(t_pdp_grey *x)
{
/* unregister and propagate if valid packet */
pdp_pass_if_valid(x->x_outlet0, &x->x_packet0);
}
static void pdp_grey_input_0(t_pdp_grey *x, t_symbol *s, t_floatarg f)
{
int p = (int)f;
int passes, i;
if (s== gensym("register_rw")) pdp_packet_copy_rw_or_drop(&x->x_packet0, p);
if ((s == gensym("process")) && (-1 != x->x_packet0)){
pdp_grey_process(x);
pdp_grey_sendpacket(x);
}
}
short int pdp_grey_fixedpoint(float f)
{
float min = (float)-0x7fff;
float max = (float)0x7fff;
f *= (float)0x100;
if (f>max) f = max;
if (f<min) f = min;
return (short int)f;
}
t_class *pdp_grey_class;
void pdp_grey_free(t_pdp_grey *x)
{
}
void *pdp_grey_new(t_floatarg f)
{
t_pdp_grey *x = (t_pdp_grey *)pd_new(pdp_grey_class);
/* no arg, or zero -> gain = 1 */
if (f==0.0f) f = 1.0f;
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("gain"));
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
x->x_packet0 = -1;
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_grey_setup(void)
{
pdp_grey_class = class_new(gensym("pdp_grey"), (t_newmethod)pdp_grey_new,
(t_method)pdp_grey_free, sizeof(t_pdp_grey), 0, A_DEFFLOAT, A_NULL);
class_addmethod(pdp_grey_class, (t_method)pdp_grey_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
}
#ifdef __cplusplus
}
#endif
|
