1 #include <u.h>
2 #include <libc.h>
3 #include <bio.h>
4 #include <draw.h>
5 #include "sky.h"
6 
7 void
8 displaypic(Picture *pic)
9 {
10 	int p[2];
11 	int i, n;
12 	uchar *a;
13 
14 
15 	if(pipe(p) < 0){
16 		fprint(2, "pipe failed: %r\n");
17 		return;
18 	}
19 	switch(rfork(RFPROC|RFFDG)){
20 	case -1:
21 		fprint(2, "fork failed: %r\n");
22 		return;
23 
24 	case 0:
25 		close(p[1]);
26 		dup(p[0], 0);
27 		close(p[0]);
28 	/*	execl("/bin/page", "page", "-w", 0); */
29 		execlp("img", "img", nil);
30 		fprint(2, "exec failed: %r\n");
31 		exits("exec");
32 
33 	default:
34 		close(p[0]);
35 		fprint(p[1], "%11s %11d %11d %11d %11d ",
36 			"k8", pic->minx, pic->miny, pic->maxx, pic->maxy);
37 		n = (pic->maxx-pic->minx)*(pic->maxy-pic->miny);
38 		/* release the memory as we hand it off; this could be a big piece of data */
39 		a = pic->data;
40 		while(n > 0){
41 			i = 8192 - (((uintptr)a)&8191);
42 			if(i > n)
43 				i = n;
44 			if(write(p[1], a, i)!=i)
45 				fprint(2, "write error: %r\n");
46 		/*	if(i == 8192)	/* page aligned */
47 		/*		segfree(a, i); */
48 			n -= i;
49 			a += i;
50 		}
51 		free(pic->data);
52 		free(pic);
53 		close(p[1]);
54 		break;
55 	}
56 }
57 
58 void
59 displayimage(Image *im)
60 {
61 	int p[2];
62 
63 	if(pipe(p) < 0){
64 		fprint(2, "pipe failed: %r\n");
65 		return;
66 	}
67 	switch(rfork(RFPROC|RFFDG)){
68 	case -1:
69 		fprint(2, "fork failed: %r\n");
70 		return;
71 
72 	case 0:
73 		close(p[1]);
74 		dup(p[0], 0);
75 		close(p[0]);
76 		execlp("img", "img", nil);
77 	/*	execl("/bin/page", "page", "-w", 0); */
78 		fprint(2, "exec failed: %r\n");
79 		exits("exec");
80 
81 	default:
82 		close(p[0]);
83 		writeimage(p[1], im, 0);
84 		freeimage(im);
85 		close(p[1]);
86 		break;
87 	}
88 }