From 4d64e4cd434426234a5c313c151cd79b6afc299e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juha=20Vehvil=C3=A4inen?= <jusu@users.sourceforge.net>
Date: Sat, 6 Jul 2002 17:50:18 +0000
Subject: *** empty log message ***

svn path=/trunk/Framestein/; revision=27
---
 Patches/vframeread~.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 Patches/vframeread~.c

(limited to 'Patches/vframeread~.c')

diff --git a/Patches/vframeread~.c b/Patches/vframeread~.c
new file mode 100644
index 0000000..fe61836
--- /dev/null
+++ b/Patches/vframeread~.c
@@ -0,0 +1,123 @@
+#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);
+}
-- 
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