ref: 0ce5868c8a91cacf824cd4ed5393678e0bc394a5
parent: 3caa4956a884576789997ebdd1cd47c70f0cbfcb
author: Yaroslav Kolomiiets <yarikos@gmail.com>
date: Tue Aug 9 10:47:08 EDT 2016
egdi.c: split parsing, complete
--- a/egdi.c
+++ b/egdi.c
@@ -91,6 +91,9 @@
int (*get)(Imgupd*,uchar*,uint,int,int);
};
+static void drawupd(Rdp*,Imgupd*);
+
+
static void scrblt(Rdp*,Imgupd*);
static void memblt(Rdp*,Imgupd*);
static void cacheimage2(Rdp*,Imgupd*);
@@ -97,14 +100,14 @@
static void cachecmap(Rdp*,Imgupd*);
Order ordtab[NumOrders] = {- [ScrBlt]= { 1, scrblt, getscrblt },- [MemBlt]= { 2, memblt, getmemblt },+ [ScrBlt]= { 1, drawupd, getscrblt },+ [MemBlt]= { 2, drawupd, getmemblt },};
Order auxtab[8] = {- [CacheImage2]= { 0, cacheimage2, getimgcache2 },- [CacheCompressed2]= { 0, cacheimage2, getimgcache2 },- [CacheCmap]= { 0, cachecmap, getcmapcache },+ [CacheImage2]= { 0, drawupd, getimgcache2 },+ [CacheCompressed2]= { 0, drawupd, getimgcache2 },+ [CacheCmap]= { 0, drawupd, getcmapcache },};
uchar
@@ -123,14 +126,86 @@
static int cfclipr(Rectangle*,uchar*,int);
static int cfpt(Point*,uchar*,int,int,int);
+int getfupd(Imgupd*, uchar*, uint);
+int getfupd(Imgupd* up, uchar* a, uint nb)
+{+ uchar *p, *ep;
+ int ctl, fset, fsize;
+ int n, size, opt, xorder;
+
+ p = a;
+ ep = a+nb;
+
+ fset = 0;
+ ctl = *p;
+ if(!(ctl&Standard))
+ goto ErrNstd;
+ if(ctl&Secondary){+ if(p+6>ep)
+ sysfatal("scanorders: %s", Eshort);+ size = ((short)GSHORT(p+1))+13;
+ if(size < 0 || p+size > ep)
+ sysfatal("scanorders: size: %s", Eshort);+ opt = GSHORT(p+3);
+ xorder = p[5];
+ if(xorder >= nelem(auxtab) || auxtab[xorder].get == nil){+ fprint(2, "egdi: unsupported secondary order %d\n", xorder);
+ p += size;
+ return p-a;
+ }
+
+ auxtab[xorder].get(up, p, size, xorder, opt);
+ p += size;
+ return p-a;
+ }
+ p++;
+ if(ctl&NewOrder){+ gc.order = *p++;
+ if(gc.order >= NumOrders) // paranoia
+ gc.order = PatBlt;
+ }
+ fsize = ordtab[gc.order].fsize - ((ctl>>6)&Bits2);
+ switch(fsize){+ default:
+ goto ErrFsize;
+ case 3:
+ fset = p[0]|(p[1]<<8)|(p[2]<<16);
+ break;
+ case 2:
+ fset = GSHORT(p);
+ break;
+ case 1:
+ fset = p[0];
+ case 0:
+ break;
+ }
+ p += fsize;
+
+ if(ctl&Clipped && !(ctl&SameClipping))
+ p += cfclipr(&gc.clipr, p, ep-p);
+
+ if(ordtab[gc.order].get == nil)
+ goto ErrNotsup;
+ n = ordtab[gc.order].get(up, p, ep-p, ctl, fset);
+ p += n;
+ return p-a;
+ErrNstd:
+ fprint(2, "egdi: non-standard order (GDI+ or out of sync)\n");
+ return p-a;
+ErrFsize:
+ fprint(2, "egdi: bad field encoding bytes count for order %d\n", gc.order);
+ return p-a;
+ErrNotsup:
+ fprint(2, "egdi: unsupported order %d\n", gc.order);
+ return p-a;
+}
+
/* 2.2.2.2 Fast-Path Orders Update (TS_FP_UPDATE_ORDERS) */
void
scanorders(Rdp* c, Share* as)
{- int count;
+ int n, count;
uchar *p, *ep;
- int ctl, fset, fsize;
- int n, size, opt, xorder;
Imgupd u;
count = as->nord;
@@ -138,59 +213,8 @@
ep = as->data + as->ndata;
while(count-- > 0 && p<ep){- fset = 0;
- ctl = *p;
- if(!(ctl&Standard))
- goto ErrNstd;
- if(ctl&Secondary){- if(p+6>ep)
- sysfatal("scanorders: %s", Eshort);- size = ((short)GSHORT(p+1))+13;
- if(size < 0 || p+size > ep)
- sysfatal("scanorders: size: %s", Eshort);- opt = GSHORT(p+3);
- xorder = p[5];
- if(xorder >= nelem(auxtab) || auxtab[xorder].get == nil){- fprint(2, "egdi: unsupported secondary order %d\n", xorder);
- p += size;
- continue;
- }
-
- auxtab[xorder].get(&u, p, size, xorder, opt);
- auxtab[xorder].fn(c, &u);
- p += size;
- continue;
- }
- p++;
- if(ctl&NewOrder){- gc.order = *p++;
- if(gc.order >= NumOrders) // paranoia
- gc.order = PatBlt;
- }
- fsize = ordtab[gc.order].fsize - ((ctl>>6)&Bits2);
- switch(fsize){- default:
- goto ErrFsize;
- case 3:
- fset = p[0]|(p[1]<<8)|(p[2]<<16);
- break;
- case 2:
- fset = GSHORT(p);
- break;
- case 1:
- fset = p[0];
- case 0:
- break;
- }
- p += fsize;
-
- if(ctl&Clipped && !(ctl&SameClipping))
- p += cfclipr(&gc.clipr, p, ep-p);
-
- if(ordtab[gc.order].get == nil)
- goto ErrNotsup;
- n = ordtab[gc.order].get(&u, p, ep-p, ctl, fset);
- ordtab[gc.order].fn(c, &u);
+ n = getfupd(&u, p, ep-p);
+ drawupd(c, &u);
p += n;
}
if(display->locking)
@@ -198,17 +222,6 @@
flushimage(display, 1);
if(display->locking)
unlockdisplay(display);
- return;
-
-ErrNstd:
- fprint(2, "egdi: non-standard order (GDI+ or out of sync)\n");
- return;
-ErrFsize:
- fprint(2, "egdi: bad field encoding bytes count for order %d\n", gc.order);
- return;
-ErrNotsup:
- fprint(2, "egdi: unsupported order %d\n", gc.order);
- return;
}
static int
@@ -483,6 +496,16 @@
return 9+4*256;
}
+static void
+drawupd(Rdp* c,Imgupd* up)
+{+ switch(up->type){+ case Uscrblt: scrblt(c, up); break;
+ case Umemblt: memblt(c, up); break;
+ case Uicache: cacheimage2(c, up); break;
+ case Umcache: cachecmap(c, up); break;
+ }
+}
static void