shithub: ifilter

Download patch

ref: d41ee93f06b95c540cb19388795766aded1482c0
parent: 19d022a35e52dcfcb999bf53db7e9e171d1f2176
author: phil9 <telephil9@gmail.com>
date: Fri Nov 26 16:19:39 EST 2021 

remove ifilter.c and update mkfile


--- a/ifilter.c
+++ /dev/null
@@ -1,131 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include <memdraw.h>
-
-#define MIN(x,y) ((x)<(y)?(x):(y))
-
-typedef struct Filter Filter;
-
-struct Filter
-{
-	const char *name;
-	void (*filter)(uchar[3], float);
-};
-
-void
-grayscale(uchar p[3], float)
-{
-	uchar v = 0.2126*p[2] + 0.7152*p[1] + 0.0722*p[0];
-	p[0] = p[1] = p[2] = v;
-}
-
-void
-sepia(uchar p[3], float)
-{
-	float r, g, b;
-
-	r = 0.393*p[2] + 0.769*p[1] + 0.189*p[0];
-	g = 0.349*p[2] + 0.686*p[1] + 0.168*p[0];
-	b = 0.272*p[2] + 0.534*p[1] + 0.131*p[0];
-	p[2] = MIN(r, 255);
-	p[1] = MIN(g, 255);
-	p[0] = MIN(b, 255);
-}
-
-void
-invert(uchar p[3], float)
-{
-	p[0] = 255 - p[0];
-	p[1] = 255 - p[1];
-	p[2] = 255 - p[2];
-}
-
-void
-shade(uchar p[3], float factor)
-{
-	p[0] = p[0] * (1 - factor);
-	p[1] = p[1] * (1 - factor);
-	p[2] = p[2] * (1 - factor);
-}
-
-void
-tint(uchar p[3], float factor)
-{
-	p[0] = p[0] + (255.0 - p[0]) * factor;
-	p[1] = p[1] + (255.0 - p[1]) * factor;
-	p[2] = p[2] + (255.0 - p[2]) * factor;
-}
-
-void
-usage(void)
-{
-	fprint(2, "usage: %s [-f factor] [grayscale|sepia|invert|shade|tint]\n", argv0);
-	exits("usage");
-}
-
-static Filter filters[] = {
-	{ "grayscale", grayscale },
-	{ "sepia", sepia },
-	{ "invert", invert },
-	{ "shade", shade },
-	{ "tint", tint },
-};
-
-void
-main(int argc, char *argv[])
-{
-	Memimage *o, *i;
-	int w, h, p, n;
-	uchar *buf;
-	Filter *f;
-	float factor;
-
-	f = nil;
-	factor = 0.0;
-	ARGBEGIN{
-	case 'f':
-		factor = (float)atof(EARGF(usage()));
-		break;
-	default:
-		usage();
-		break;
-	}ARGEND;
-	if(argc!=1)
-		usage();
-	for(n=0; n<nelem(filters); n++){
-		if(strcmp(*argv, filters[n].name)==0){
-			f = filters+n;
-			break;
-		}
-	}
-	if(f==nil)
-		usage();
-	if(factor<0.0 || factor>1.0){
-		fprint(2, "factor should be between 0.0 and 1.0\n");
-		exits("invalid factor");
-	}
-	if(memimageinit()<0)
-		sysfatal("memimageinit: %r");
-	o = readmemimage(0);
-	if(o==nil)
-		sysfatal("readmemimage: %r");
-	i = allocmemimage(o->r, XRGB32);
-	memimagedraw(i, i->r, o, o->r.min, nil, ZP, S);
-	freememimage(o);
-	w = Dx(i->r);
-	h = Dy(i->r);
-	n = 4*w*h*sizeof(uchar);
-	buf = malloc(n);
-	if(buf==nil)
-		sysfatal("malloc: %r");
-	if(unloadmemimage(i, i->r, buf, n)<0)
-		sysfatal("unloadmemimage: %r");
-	freememimage(i);
-	for(p = 0; p < n; p+=4)
-		f->filter(buf+p, factor);
-	print("   x8r8g8b8 %11d %11d %11d %11d ", 0, 0, w, h);
-	write(1, buf, n);
-	exits(nil);
-}
-
--- a/mkfile
+++ b/mkfile
@@ -2,7 +2,7 @@
 
 BIN=/$objtype/bin
 CFLAGS=-FTVw
-TARG=ifilter blur
+TARG=cfilter blur
 
 default:V: all