#include <u.h>#include <libc.h>#include <libg.h>#define CHUNK 6000voidwrbitmap(Bitmap *b, int miny, int maxy, uchar *data){ long dy, px; ulong l, t, n; uchar *buf; px = 1<<(3-b->ldepth); /* pixels per byte */ /* set l to number of bytes of data per scan line */ if(b->r.min.x >= 0) l = (b->r.max.x+px-1)/px - b->r.min.x/px; else{ /* make positive before divide */ t = (-b->r.min.x)+px-1; t = (t/px)*px; l = (t+b->r.max.x+px-1)/px; } while(maxy > miny){ dy = maxy - miny; if(dy*l > CHUNK) dy = CHUNK/l; n = dy*l; buf = bneed(11+n); buf[0] = 'w'; BPSHORT(buf+1, b->id); BPLONG(buf+3, miny); BPLONG(buf+7, miny+dy); memmove(buf+11, data, n); data += n; miny += dy; }}
#include <u.h>
#include <libc.h>
#include <libg.h>
#define CHUNK 6000
void
wrbitmap(Bitmap *b, int miny, int maxy, uchar *data)
{
long dy, px;
ulong l, t, n;
uchar *buf;
px = 1<<(3-b->ldepth); /* pixels per byte */
/* set l to number of bytes of data per scan line */
if(b->r.min.x >= 0)
l = (b->r.max.x+px-1)/px - b->r.min.x/px;
else{ /* make positive before divide */
t = (-b->r.min.x)+px-1;
t = (t/px)*px;
l = (t+b->r.max.x+px-1)/px;
}
while(maxy > miny){
dy = maxy - miny;
if(dy*l > CHUNK)
dy = CHUNK/l;
n = dy*l;
buf = bneed(11+n);
buf[0] = 'w';
BPSHORT(buf+1, b->id);
BPLONG(buf+3, miny);
BPLONG(buf+7, miny+dy);
memmove(buf+11, data, n);
data += n;
miny += dy;
}
}