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#include "m_pd.h"
#include "math.h"
#include "sharemem.h"
#include "vframe.h"
/* -------------------------- vsig~ ------------------------------ */
static t_class *vsig_class;
typedef struct _vsig
{
t_object x_obj;
float x_f;
t_outlet *x_bang;
int id;
HANDLE hvf, hbits;
LPVOID memvf, membits;
unsigned long pos, size;
} t_vsig;
static t_int *vsig_perform(t_int *w)
{
t_vsig *x = (t_vsig *)(w[1]);
t_float *out = (t_float *)(w[2]);
t_float *sync = (t_float *)(w[3]);
int n = (int)(w[4]);
short *p16;
long *p32;
struct vframeimage *vfp=x->memvf;
int bitspp;
if(!vfp || !x->membits) return(w+5);
bitspp = vfp->f.pixelformat / 8;
switch(vfp->f.pixelformat)
{
case 16:
p16 = (short *)x->membits;
while (n--)
{
*out++ = colortosample16(p16[x->pos++]);
if(x->pos*bitspp >= x->size)
{
x->pos=0;
*sync = 1; // moveto topleft
outlet_bang(x->x_bang);
} else *sync = -1; // continue from whereever you are
sync++;
}
break;
case 32:
p32 = (long *)x->membits;
while (n--)
{
*out++ = colortosample32(p32[x->pos++]);
if(x->pos*bitspp >= x->size)
{
x->pos=0;
*sync = 1;
outlet_bang(x->x_bang);
} else *sync = -1;
sync++;
}
break;
}
return (w+5);
}
static void vsig_dsp(t_vsig *x, t_signal **sp)
{
dsp_add(vsig_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
static void vsig_float(t_vsig *x, t_float f)
{
struct vframeimage *vfp;
if(x->id==f && x->membits!=NULL) return;
x->id = x->x_f = f;
openframedatabyid(x->id,
&x->hvf, &x->hbits, &x->memvf, &x->membits, &vfp);
if(!x->membits)
{
post("vsig~: no memory at %d", x->id);
return;
} else
{
x->size = vfp->f.height*vfp->f.lpitch;
x->pos = 0;
}
}
static void *vsig_new(t_floatarg f)
{
t_vsig *x = (t_vsig *)pd_new(vsig_class);
x->id = -1;
x->x_f = f;
x->hvf=NULL;
x->memvf=NULL;
x->hbits=NULL;
x->membits=NULL;
outlet_new(&x->x_obj, gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
x->x_bang = outlet_new(&x->x_obj, gensym("bang"));
return (x);
}
static void vsig_destroy(t_vsig *x)
{
if(x->membits!=NULL) smfree(&x->hbits, x->membits);
if(x->memvf!=NULL) smfree(&x->hvf, x->memvf);
}
void vsig_tilde_setup(void)
{
vsig_class = class_new(gensym("vsig~"),
(t_newmethod)vsig_new, (t_method)vsig_destroy,
sizeof(t_vsig), 0, A_DEFFLOAT, 0);
class_addfloat(vsig_class, (t_method)vsig_float);
class_addmethod(vsig_class, (t_method)vsig_dsp, gensym("dsp"), 0);
}
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