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#include "m_pd.h"
#include "math.h"
#include "sharemem.h"
#include "vframe.h"
/* -------------------------- vdrawarray ------------------------------ */
static t_class *vdrawarray_class;
typedef struct _vdrawarray
{
t_object x_obj;
t_symbol *array_name;
t_float startpos, endpos;
int id;
HANDLE hvf, hbits;
LPVOID memvf, membits;
struct vframeimage *vfp;
} t_vdrawarray;
void vdrawarray_set(t_vdrawarray *x, t_symbol *s)
{
x->array_name = s;
}
static void vdrawarray_bang(t_vdrawarray *x)
{
int i, o, h, y, bytesize, gsize, pos, len;
t_float *gdata, tmpf;
byte *p;
t_garray *g;
if(!x->id)
{
post("vdrawarray: connect vframe first");
return;
}
if(!(g = (t_garray *)pd_findbyclass(x->array_name, garray_class)))
{
pd_error(x, "vdrawarray: %s: no such table", x->array_name->s_name);
return;
}
garray_getfloatarray(g, &gsize, &gdata);
h = x->vfp->f.height;
p = (byte*)x->membits;
bytesize = x->vfp->f.pixelformat/8;
if(x->startpos==0 && x->endpos==0)
x->endpos=gsize;
if(x->startpos<0) x->startpos=0;
if(x->startpos>gsize) x->startpos=gsize;
if(x->endpos<0) x->endpos=0;
if(x->endpos>gsize) x->endpos=gsize;
if(x->endpos<x->startpos)
{
tmpf = x->endpos;
x->endpos = x->startpos;
x->startpos = tmpf;
}
for(i=0; i<x->vfp->f.width; i++)
{
pos = (int)((i / (float)x->vfp->f.width) * (x->endpos-x->startpos) + x->startpos );
len = (int)((fabs(gdata[pos]) * (float)x->vfp->f.height));
o = (x->vfp->f.height - len) / 2;
for(y=o; y<o+len && y<x->vfp->f.height; y++)
memset(&p[y*x->vfp->f.lpitch+i*bytesize], 253, bytesize);
}
}
static void vdrawarray_float(t_vdrawarray *x, t_float f)
{
if(x->id==f && x->membits!=NULL)
{
outlet_float(x->x_obj.ob_outlet, x->id);
vdrawarray_bang(x);
return;
}
x->id = f;
openframedatabyid(x->id,
&x->hvf, &x->hbits, &x->memvf, &x->membits, &x->vfp);
if(!x->membits)
{
post("vdrawarray: no memory at %d", x->id);
return;
} else
{
outlet_float(x->x_obj.ob_outlet, x->id);
vdrawarray_bang(x);
}
}
static void *vdrawarray_new(t_symbol *s)
{
t_vdrawarray *x = (t_vdrawarray *)pd_new(vdrawarray_class);
x->array_name = s;
x->id=0;
x->hvf=NULL;
x->memvf=NULL;
x->hbits=NULL;
x->membits=NULL;
x->startpos=x->endpos=0;
outlet_new(&x->x_obj, gensym("float"));
floatinlet_new(&x->x_obj, &x->startpos);
floatinlet_new(&x->x_obj, &x->endpos);
return (x);
}
static void vdrawarray_destroy(t_vdrawarray *x)
{
if(x->membits!=NULL) smfree(&x->hbits, x->membits);
if(x->memvf!=NULL) smfree(&x->hvf, x->memvf);
}
void vdrawarray_setup(void)
{
vdrawarray_class = class_new(gensym("vdrawarray"),
(t_newmethod)vdrawarray_new, (t_method)vdrawarray_destroy,
sizeof(t_vdrawarray), 0, A_DEFSYM, 0);
class_addfloat(vdrawarray_class, (t_method)vdrawarray_float);
class_addbang(vdrawarray_class, (t_method)vdrawarray_bang);
class_addmethod(vdrawarray_class, (t_method)vdrawarray_set, gensym("set"), A_DEFSYM, 0);
}
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