1 files changed, 123 insertions, 0 deletions
diff --git a/Patches/vsig~.c b/Patches/vsig~.c
new file mode 100644
index 0000000..f177723
--- /dev/null
+++ b/Patches/vsig~.c
@@ -0,0 +1,123 @@
+#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);
+}