Subversion Repositories planix.SVN

Rev

Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 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|RFNOTEG|RFNOWAIT)){
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", nil);
29 
		fprint(2, "exec failed: %r\n");
30 
		exits("exec");
31 
 
32 
	default:
33 
		close(p[0]);
34 
		fprint(p[1], "%11s %11d %11d %11d %11d ",
35 
			"k8", pic->minx, pic->miny, pic->maxx, pic->maxy);
36 
		n = (pic->maxx-pic->minx)*(pic->maxy-pic->miny);
37 
		/* release the memory as we hand it off; this could be a big piece of data */
38 
		a = pic->data;
39 
		while(n > 0){
40 
			i = 8192 - (((uintptr)a)&8191);
41 
			if(i > n)
42 
				i = n;
43 
			if(write(p[1], a, i)!=i)
44 
				fprint(2, "write error: %r\n");
45 
			if(i == 8192)	/* page aligned */
46 
				segfree(a, i);
47 
			n -= i;
48 
			a += i;
49 
		}
50 
		free(pic->data);
51 
		free(pic);
52 
		close(p[1]);
53 
		break;
54 
	}
55 
}
56 
 
57 
void
58 
displayimage(Image *im)
59 
{
60 
	int p[2];
61 
 
62 
	if(pipe(p) < 0){
63 
		fprint(2, "pipe failed: %r\n");
64 
		return;
65 
	}
66 
	switch(rfork(RFPROC|RFFDG|RFNOTEG|RFNOWAIT)){
67 
	case -1:
68 
		fprint(2, "fork failed: %r\n");
69 
		return;
70 
 
71 
	case 0:
72 
		close(p[1]);
73 
		dup(p[0], 0);
74 
		close(p[0]);
75 
		execl("/bin/page", "page", "-w", nil);
76 
		fprint(2, "exec failed: %r\n");
77 
		exits("exec");
78 
 
79 
	default:
80 
		close(p[0]);
81 
		writeimage(p[1], im, 0);
82 
		freeimage(im);
83 
		close(p[1]);
84 
		break;
85 
	}
86 
}