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
|
#include "m_pd.h"
#include "math.h"
#include "sharemem.h"
#include "vframe.h"
/* -------------------------- vframeread~ ------------------------------ */
static t_class *vframeread_class;
typedef struct _vframeread
{
t_object x_obj;
float x_f;
float x_sigf;
int id;
HANDLE hvf, hbits;
LPVOID memvf, membits;
unsigned long pos, size;
} t_vframeread;
static t_int *vframeread_perform(t_int *w)
{
t_vframeread *x = (t_vframeread *)(w[1]);
t_float *in_sync = (t_float *)(w[2]);
t_float *out = (t_float *)(w[3]);
int n = (int)(w[4]);
short *p16;
long *p32;
struct vframeimage *vfp=x->memvf;
unsigned long bytespp;
if(!vfp || !x->membits) return(w+5);
bytespp = vfp->f.pixelformat / 8;
switch(vfp->f.pixelformat)
{
case 16:
p16 = (short *)x->membits;
while (n--)
{
if(*in_sync>=0 && *in_sync<=1)
x->pos = *in_sync * (float)(x->size / bytespp);
in_sync++;
*out++ = colortosample16(p16[x->pos++]);
if(x->pos*bytespp >= x->size)
x->pos=0;
}
break;
case 32:
p32 = (long *)x->membits;
while (n--)
{
if(*in_sync>=0 && *in_sync<1)
x->pos = *in_sync * (float)(x->size / bytespp);
in_sync++;
*out++ = colortosample32(p32[x->pos++]);
if(x->pos*bytespp >= x->size)
x->pos=0;
}
break;
}
return (w+5);
}
static void vframeread_dsp(t_vframeread *x, t_signal **sp)
{
dsp_add(vframeread_perform, 4,
x,
sp[0]->s_vec,
sp[1]->s_vec,
sp[0]->s_n);
}
static void vframeread_float(t_vframeread *x, t_float f)
{
struct vframeimage *vfp;
if(x->id==f && x->membits) return;
x->id = x->x_f = f;
openframedatabyid(x->id,
&x->hvf, &x->hbits, &x->memvf, &x->membits, &vfp);
if(!x->membits)
{
post("vframeread~: no memory at %d", x->id);
return;
} else
{
x->size = vfp->f.height*vfp->f.lpitch;
x->pos = 0;
}
}
static void *vframeread_new(t_floatarg f)
{
t_vframeread *x = (t_vframeread *)pd_new(vframeread_class);
x->id = -1;
x->x_f = f;
x->x_sigf = 0;
x->hvf=NULL;
x->memvf=NULL;
x->hbits=NULL;
x->membits=NULL;
outlet_new(&x->x_obj, gensym("signal"));
return (x);
}
static void vframeread_destroy(t_vframeread *x)
{
if(x->membits!=NULL) smfree(&x->hbits, x->membits);
if(x->memvf!=NULL) smfree(&x->hvf, x->memvf);
}
void vframeread_tilde_setup(void)
{
vframeread_class = class_new(gensym("vframeread~"),
(t_newmethod)vframeread_new, (t_method)vframeread_destroy,
sizeof(t_vframeread), 0, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(vframeread_class, t_vframeread, x_sigf);
class_addfloat(vframeread_class, (t_method)vframeread_float);
class_addmethod(vframeread_class, (t_method)vframeread_dsp, gensym("dsp"), 0);
}
|
