1992/0621/port/devbit.c (diff list | history)

1992/0605/sys/src/9/port/devbit.c:37,59 – 1992/0621/sys/src/9/port/devbit.c:37,62 (short | long | prev | next)
1990/0329		*/ /*
1990/0902		* Some fields in GBitmaps are overloaded:
1990/0327		* ldepth = -1 means free. * base is next pointer when free. * Arena is a word containing N, followed by a pointer to its bitmap, * followed by N blocks. The bitmap pointer is zero if block is free.
1992/0621		* followed by N blocks. The bitmap pointer is zero if block is free. * bit.map is an array of pointers to GBitmaps. The GBitmaps are * freed individually and their corresponding entries in bit.map are zeroed. * The index into bit.map is the Bitmap id as seen in libg. Subfonts and * fonts are handled similarly.
1990/0327		*/
1990/0324
1990/05313		struct {
1990/0324		Ref;
1990/0902		GBitmap *map; /* arena */ GBitmap *free; /* free list */
1992/0621		GBitmap **map; /* indexed array */ int nmap; /* number allocated */
1990/0327		ulong *words; /* storage */ ulong nwords; /* total in arena */ ulong *wfree; /* pointer to next free word */
1992/0209		GFont *font; /* arena; looked up linearly BUG */ GSubfont *subfont; /* arena; looked up linearly BUG */
1992/0621		GFont **font; /* indexed array */ int nfont; /* number allocated */ GSubfont**subfont; /* indexed array */ int nsubfont; /* number allocated */
1990/0327		int lastid; /* last allocated bitmap id */
1992/0209		int lastsubfid; /* last allocated subfont id */
1990/0623		int lastfid; /* last allocated font id */
1992/0605/sys/src/9/port/devbit.c:64,73 – 1992/0621/sys/src/9/port/devbit.c:67,79
1991/0706		int mid; /* colormap read bitmap id */
1990/0324		}bit;
1992/0621		#define DMAP 32 /* delta increase in size of arrays */
1990/0327		#define FREE 0x80000000 void bitcompact(void);
1992/0209		GBitmap*bitalloc(Rectangle, int);
1992/0621		int bitalloc(Rectangle, int);
1990/0902		void bitfree(GBitmap*);
1992/0621		void fontfree(GFont*); void subfontfree(GSubfont*);
1992/0209		void bitstring(GBitmap*, Point, GFont*, uchar*, long, Fcode); void bitloadchar(GFont*, int, GSubfont*, int);
1990/0912		extern GBitmap gscreen;
1992/0605/sys/src/9/port/devbit.c:142,148 – 1992/0621/sys/src/9/port/devbit.c:148,154
1990/0324		}; #define NBIT (sizeof bitdir/sizeof(Dirtab))
1990/0629		#define NINFO 257
1992/0621		#define NINFO 8192
1990/0324		void bitreset(void)
1992/0605/sys/src/9/port/devbit.c:151,181 – 1992/0621/sys/src/9/port/devbit.c:157,178
1990/0902		GBitmap *bp;
1991/0706		ulong r;
1990/0327
1990/0902		bit.map = ialloc(conf.nbitmap * sizeof(GBitmap), 0);
1990/0327		for(i=0,bp=bit.map; i<conf.nbitmap; i++,bp++){ bp->ldepth = -1; bp->base = (ulong*)(bp+1); } bp--; bp->base = 0;
1990/0912		bit.map[0] = gscreen; /* bitmap 0 is screen */
1992/0621		bit.map = smalloc(DMAP*sizeof(GBitmap*)); bit.nmap = DMAP;
1991/0706		getcolor(0, &r, &r, &r); if(r == 0) flipping = 1;
1990/0327		bit.free = bit.map+1; bit.lastid = -1;
1992/0209		bit.lastsubfid = -1;
1990/0623		bit.lastfid = -1;
1990/0327		bit.words = ialloc(conf.nbitbyte, 0);
1992/0621		print("bitreset %lux\n", bit.words);
1990/0327		bit.nwords = conf.nbitbyte/sizeof(ulong); bit.wfree = bit.words;
1992/0209		bit.subfont = ialloc(conf.nsubfont * sizeof(GSubfont), 0); bit.subfont[0] = *defont; bit.font = ialloc(conf.nfont * sizeof(GFont), 0);
1992/0208		for(i=1; i<conf.nsubfont; i++)
1992/0209		bit.subfont[i].info = ialloc((NINFO+1)*sizeof(Fontchar), 0); for(i=0; i<conf.nfont; i++) bit.font[i].ldepth = -1;
1992/0621		bit.font = smalloc(DMAP*sizeof(GFont*)); bit.nfont = DMAP; bit.subfont = smalloc(DMAP*sizeof(GSubfont*)); bit.nsubfont = DMAP;
1990/05313		Cursortocursor(&arrow);
1990/0324		}
1992/0605/sys/src/9/port/devbit.c:186,192 – 1992/0621/sys/src/9/port/devbit.c:183,189
1990/0324		unlock(&bit);
1991/0706		if(gscreen.ldepth > 3) cursorback.ldepth = 0; else {
1992/0621		else{
1991/0706		cursorback.ldepth = gscreen.ldepth; cursorback.width = ((16 << gscreen.ldepth) + 31) >> 5; }
1992/0605/sys/src/9/port/devbit.c:196,202 – 1992/0621/sys/src/9/port/devbit.c:193,198
1990/0324		Chan* bitattach(char *spec) {
1992/0604		bit.map[0] = gscreen; /* bitmap 0 is screen */
1990/0324		return devattach('b', spec); }
1992/0605/sys/src/9/port/devbit.c:221,229 – 1992/0621/sys/src/9/port/devbit.c:217,227
1990/0324		devstat(c, db, bitdir, NBIT, devgen); } Chan *
1992/0621		Chan*
1990/0324		bitopen(Chan *c, int omode) {
1992/0621		GBitmap *b;
1990/11211		if(c->qid.path == CHDIR){
1990/0324		if(omode != OREAD)
1990/11211		error(Eperm);
1992/0605/sys/src/9/port/devbit.c:233,239 – 1992/0621/sys/src/9/port/devbit.c:231,240
1990/0324		unlock(&bit);
1990/11211		error(Einuse);
1990/0324		}
1992/0604		bit.map[0].clipr = gscreen.clipr;
1992/0621		b = smalloc(sizeof(GBitmap)); *b = gscreen; bit.map[0] = b; /* bitmap 0 is screen */ bit.subfont[0] = defont; /* subfont 0 is default */
1990/0327		bit.lastid = -1;
1990/0623		bit.lastfid = -1;
1992/0209		bit.lastsubfid = -1;
1992/0605/sys/src/9/port/devbit.c:275,298 – 1992/0621/sys/src/9/port/devbit.c:276,318
1990/0324		void bitclose(Chan *c) {
1990/0327		int i;
1990/0902		GBitmap *bp;
1992/0208		GSubfont *fp;
1992/0209		GFont *ffp;
1992/0621		GBitmap *b, **bp, **ebp; GSubfont *s, **sp, **esp; GFont *f, **fp, **efp;
1990/0327
1990/11211		if(c->qid.path!=CHDIR && (c->flag&COPEN)){
1990/0329		lock(&bit);
1990/0327		if(--bit.ref == 0){ for(i=1,bp=&bit.map[1]; i<conf.nbitmap; i++,bp++) if(bp->ldepth >= 0) bitfree(bp);
1992/0209		for(i=1,fp=&bit.subfont[1]; i<conf.nsubfont; i++,fp++)
1990/0623		fp->bits = 0;
1992/0209		for(i=0,ffp=&bit.font[0]; i<conf.nfont; i++,ffp++){ ffp->b = 0; ffp->ldepth = -1;
1992/0621		/* 0th bitmap, screen, has no special storage */ bp = bit.map; free(*bp); *bp = 0; ebp = &bit.map[bit.nmap]; bp++; for(; bp<ebp; bp++){ b = *bp; if(b){ bitfree(b); *bp = 0; }
1992/0209		} bit.font[0].ldepth=0;/*BUG */
1992/0621		/* 0th subfont, defont, points to real storage */ esp = &bit.subfont[bit.nsubfont]; for(sp=&bit.subfont[1]; sp<esp; sp++){ s = *sp; if(s){ subfontfree(s); *sp = 0; } } efp = &bit.font[bit.nfont]; for(fp=bit.font; fp<efp; fp++){ f = *fp; if(f){ fontfree(f); *fp = 0; } }
1990/0327		}
1990/0324		unlock(&bit); }
1992/0605/sys/src/9/port/devbit.c:440,446 – 1992/0621/sys/src/9/port/devbit.c:460,469
1991/0706		* read colormap: * data 12*(2**bitmapdepth) */ l = (1<<bit.map[bit.mid].ldepth);
1992/0621		src = bit.map[bit.mid]; if(src == 0) error(Ebadbitmap); l = (1<<src->ldepth);
1991/0706		nw = 1 << l; if(n < 12*nw) error(Ebadblt);
1992/0605/sys/src/9/port/devbit.c:467,474 – 1992/0621/sys/src/9/port/devbit.c:490,497
1991/0706		* read bitmap:
1990/0613		* data bytewidth*(maxy-miny) */ src = &bit.map[bit.rid]; if(src->ldepth<0)
1992/0621		src = bit.map[bit.rid]; if(src == 0)
1990/11211		error(Ebadbitmap);
1990/0613		off = 0; if(bit.rid == 0)
1992/0605/sys/src/9/port/devbit.c:558,572 – 1992/0621/sys/src/9/port/devbit.c:581,595
1990/0329		uchar *p, *q;
1991/0706		long m, v, miny, maxy, minx, maxx, t, x, y; ulong l, nw, ws, rv; int off, isoff, i, ok;
1992/0621		int off, isoff, i, j, ok;
1990/06111		Point pt, pt1, pt2;
1990/0324		Rectangle rect;
1990/05313		Cursor curs;
1991/0706		Fcode fc;
1990/0623		Fontchar *fcp;
1990/0902		GBitmap *bp, *src, *dst;
1992/0208		GSubfont *f;
1992/0209		GFont *ff;
1992/0621		GBitmap *b, *src, *dst, *bp; GSubfont *f, **fp; GFont *ff, **ffp;
1990/0324
1990/11211		if(c->qid.path == CHDIR) error(Eisdir);
1992/0605/sys/src/9/port/devbit.c:582,587 – 1992/0621/sys/src/9/port/devbit.c:605,611
1990/0721		}
1990/0324		p = va; m = n;
1992/0621		SET(src, dst, f, ff);
1990/0327		while(m > 0) switch(*p){
1990/0329		default:
1992/0605/sys/src/9/port/devbit.c:607,614 – 1992/0621/sys/src/9/port/devbit.c:631,637
1990/0327		rect.max.y = GLONG(p+14);
1991/0423		if(Dx(rect) < 0 || Dy(rect) < 0) error(Ebadblt);
1992/0209		bp = bitalloc(rect, v);
1990/0327		bit.lastid = bp-bit.map;
1992/0621		bit.lastid = bitalloc(rect, v);
1990/0327		m -= 18; p += 18; break;
1992/0605/sys/src/9/port/devbit.c:627,634 – 1992/0621/sys/src/9/port/devbit.c:650,656
1990/11211		error(Ebadblt);
1991/0706		fc = GSHORT(p+29) & 0xF; v = GSHORT(p+11); src = &bit.map[v]; if(v<0 || v>=conf.nbitmap || src->ldepth < 0)
1992/0621		if(v<0 || v>=bit.nmap || (src=bit.map[v])==0)
1991/0706		error(Ebadbitmap); off = 0; if(v == 0){
1992/0605/sys/src/9/port/devbit.c:637,644 – 1992/0621/sys/src/9/port/devbit.c:659,665
1991/0706		off = 1; }
1990/0327		v = GSHORT(p+1); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth < 0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1991/0706		if(v == 0){ if(flipping)
1992/0605/sys/src/9/port/devbit.c:703,712 – 1992/0621/sys/src/9/port/devbit.c:724,733
1990/0327		if(m < 3)
1990/11211		error(Ebadblt);
1990/0327		v = GSHORT(p+1); dst = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0327		bitfree(dst);
1992/0621		bit.map[v] = 0;
1990/0327		m -= 3; p += 3;
1990/0604		break;
1992/0605/sys/src/9/port/devbit.c:720,729 – 1992/0621/sys/src/9/port/devbit.c:741,750
1990/0623		if(m < 3)
1990/11211		error(Ebadblt);
1990/0623		v = GSHORT(p+1);
1992/0209		f = &bit.subfont[v];
1992/0208		if(v<0 || v>=conf.nsubfont || f->bits==0)
1992/0621		if(v<0 || v>=bit.nsubfont || (f=bit.subfont[v])==0)
1990/11211		error(Ebadfont);
1990/0623		f->bits = 0;
1992/0621		subfontfree(f); bit.subfont[v] = 0;
1990/0623		m -= 3; p += 3; break;
1992/0605/sys/src/9/port/devbit.c:737,749 – 1992/0621/sys/src/9/port/devbit.c:758,767
1992/0209		if(m < 3) error(Ebadblt); v = GSHORT(p+1); ff = &bit.font[v]; if(v<0 || v>=conf.nfont || ff->ldepth<0)
1992/0621		if(v<0 || v>=bit.nfont || (ff=bit.font[v])==0)
1992/0209		error(Ebadfont); if(ff->b) bitfree(ff->b); ff->b = 0; ff->ldepth = -1;
1992/0621		fontfree(ff); bit.font[v] = 0;
1992/0209		m -= 3; p += 3; break;
1992/0605/sys/src/9/port/devbit.c:776,798 – 1992/0621/sys/src/9/port/devbit.c:794,821
1990/0623		v = GSHORT(p+1); if(v<0 || v>NINFO || m<7+6*(v+1)) /* BUG */
1990/11211		error(Ebadblt);
1992/0208		for(i=1; i<conf.nsubfont; i++)
1992/0209		if(bit.subfont[i].bits == 0)
1992/0621		for(i=1; i<bit.nsubfont; i++) if(bit.subfont[i] == 0)
1992/0209		goto subfontfound;
1990/11211		error(Enofont);
1992/0621		fp = bit.subfont; bit.subfont = smalloc((bit.nsubfont+DMAP)*sizeof(GSubfont*)); memmove(bit.subfont, fp, bit.nsubfont*sizeof(GSubfont*)); free(fp); bit.nsubfont += DMAP;
1992/0209		subfontfound: f = &bit.subfont[i];
1992/0621		f = smalloc(sizeof(GSubfont)); bit.subfont[i] = f; f->info = smalloc((v+1)*sizeof(Fontchar));
1990/0623		f->n = v; f->height = p[3]; f->ascent = p[4]; v = GSHORT(p+5); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0623		m -= 7; p += 7; fcp = f->info; for(i=0; i<=f->n; i++,fcp++){
1992/0621		for(j=0; j<=f->n; j++,fcp++){
1990/0623		fcp->x = GSHORT(p); fcp->top = p[2]; fcp->bottom = p[3];
1992/0605/sys/src/9/port/devbit.c:802,808 – 1992/0621/sys/src/9/port/devbit.c:825,831
1990/0623		p += 6; m -= 6; }
1992/0209		bit.lastsubfid = f - bit.subfont;
1992/0621		bit.lastsubfid = i;
1990/0623		f->bits = dst; break;
1992/0605/sys/src/9/port/devbit.c:820,827 – 1992/0621/sys/src/9/port/devbit.c:843,849
1990/06111		if(m < 22)
1990/11211		error(Ebadblt);
1990/06111		v = GSHORT(p+1); dst = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/06111		off = 0;
1991/0706		fc = GSHORT(p+20) & 0xF;
1992/0605/sys/src/9/port/devbit.c:854,861 – 1992/0621/sys/src/9/port/devbit.c:876,882
1991/0706		if(m < 3) error(Ebadblt); v = GSHORT(p+1); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1991/0706		error(Ebadbitmap); bit.mid = v; m -= 3;
1992/0605/sys/src/9/port/devbit.c:876,887 – 1992/0621/sys/src/9/port/devbit.c:897,914
1992/0209		v = GSHORT(p+3); if(v < 0) error(Ebadblt); for(i=0; i<conf.nfont; i++) if(bit.font[i].ldepth < 0)
1992/0621		for(i=0; i<bit.nfont; i++) if(bit.font[i] == 0)
1992/0209		goto fontfound; error(Enofont);
1992/0621		ffp = bit.font; bit.font = smalloc((bit.nfont+DMAP)*sizeof(GFont*)); memmove(bit.font, ffp, bit.nfont*sizeof(GFont*)); free(ffp); bit.nfont += DMAP;
1992/0209		fontfound: ff = &bit.font[i];
1992/0621		ff = smalloc(sizeof(GFont)); bit.font[i] = ff; ff = bit.font[i];
1992/0209		ff->height = p[1]; ff->ascent = p[2]; ff->ldepth = v;
1992/0605/sys/src/9/port/devbit.c:889,895 – 1992/0621/sys/src/9/port/devbit.c:916,922
1992/0209		ff->b = 0; m -= 5; p += 5; bit.lastfid = ff - bit.font;
1992/0621		bit.lastfid = i;
1992/0209		break;
1990/0722		case 'p':
1992/0605/sys/src/9/port/devbit.c:905,912 – 1992/0621/sys/src/9/port/devbit.c:932,938
1990/0722		if(m < 14)
1990/11211		error(Ebadblt);
1990/0722		v = GSHORT(p+1); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0722		off = 0;
1991/0706		fc = GSHORT(p+12) & 0xF;
1992/0605/sys/src/9/port/devbit.c:937,944 – 1992/0621/sys/src/9/port/devbit.c:963,969
1992/0604		if(m < 19) error(Ebadblt); v = GSHORT(p+1); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1992/0604		error(Ebadbitmap); rect.min.x = GLONG(p+3); rect.min.y = GLONG(p+7);
1992/0605/sys/src/9/port/devbit.c:963,970 – 1992/0621/sys/src/9/port/devbit.c:988,994
1990/0613		if(m < 11)
1990/11211		error(Ebadblt);
1990/0613		v = GSHORT(p+1); src = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || src->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (src=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0613		miny = GLONG(p+3); maxy = GLONG(p+7);
1992/0605/sys/src/9/port/devbit.c:990,997 – 1992/0621/sys/src/9/port/devbit.c:1014,1020
1990/0329		if(m < 16)
1990/11211		error(Ebadblt);
1990/0329		v = GSHORT(p+1); dst = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0504		off = 0;
1991/0706		fc = GSHORT(p+13) & 0xF;
1992/0605/sys/src/9/port/devbit.c:1003,1010 – 1992/0621/sys/src/9/port/devbit.c:1026,1032
1990/0329		pt.x = GLONG(p+3); pt.y = GLONG(p+7); v = GSHORT(p+11);
1992/0209		f = &bit.subfont[v];
1992/0208		if(v<0 || v>=conf.nsubfont || f->bits==0 || f->bits->ldepth<0)
1992/0621		if(v<0 || v>=bit.nsubfont || (f=bit.subfont[v])==0)
1990/11211		error(Ebadblt);
1990/0329		p += 15; m -= 15;
1992/0605/sys/src/9/port/devbit.c:1033,1040 – 1992/0621/sys/src/9/port/devbit.c:1055,1061
1990/0329		if(m < 23)
1990/11211		error(Ebadblt);
1990/0329		v = GSHORT(p+1); dst = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0504		off = 0;
1991/0706		fc = GSHORT(p+21) & 0xF;
1992/0605/sys/src/9/port/devbit.c:1048,1055 – 1992/0621/sys/src/9/port/devbit.c:1069,1075
1990/0329		rect.max.x = GLONG(p+11); rect.max.y = GLONG(p+15); v = GSHORT(p+19); src = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || src->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (src=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1991/0701		if(off && !isoff){ cursoroff(1);
1992/0605/sys/src/9/port/devbit.c:1074,1081 – 1992/0621/sys/src/9/port/devbit.c:1094,1100
1992/0209		if(m < 17) error(Ebadblt); v = GSHORT(p+1); dst = &bit.map[v]; if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1992/0209		error(Ebadbitmap); off = 0; fc = GSHORT(p+13) & 0xF;
1992/0605/sys/src/9/port/devbit.c:1087,1094 – 1992/0621/sys/src/9/port/devbit.c:1106,1112
1992/0209		pt.x = GLONG(p+3); pt.y = GLONG(p+7); v = GSHORT(p+11); ff = &bit.font[v]; if(v<0 || v>=conf.nfont || ff->ldepth<0)
1992/0621		if(v<0 || v>=bit.nfont || (ff=bit.font[v])==0)
1992/0209		error(Ebadblt); l = GSHORT(p+15)*2; p += 17;
1992/0605/sys/src/9/port/devbit.c:1114,1121 – 1992/0621/sys/src/9/port/devbit.c:1132,1138
1992/0209		if(m < 5) error(Ebadblt); v = GSHORT(p+1); ff = &bit.font[v]; if(v<0 || v>=conf.nfont || ff->ldepth<0)
1992/0621		if(v<0 || v>=bit.nfont || (ff=bit.font[v])==0)
1992/0209		error(Ebadblt); /* * memset not necessary but helps avoid
1992/0605/sys/src/9/port/devbit.c:1127,1133 – 1992/0621/sys/src/9/port/devbit.c:1144,1152
1992/0209		bitfree(ff->b); ff->width = GSHORT(p+3); ff->b = 0; ff->b = bitalloc(Rect(0, 0, (NFCACHE+NFLOOK)*ff->width, ff->height), ff->ldepth);
1992/0621		i = bitalloc(Rect(0, 0, (NFCACHE+NFLOOK)*ff->width, ff->height), ff->ldepth); ff->b = bit.map[i]; bit.map[i] = 0; /* disconnect it from GBitmap space */
1992/0209		p += 5; m -= 5; break;
1992/0605/sys/src/9/port/devbit.c:1144,1151 – 1992/0621/sys/src/9/port/devbit.c:1163,1169
1990/0329		if(m < 11)
1990/11211		error(Ebadblt);
1990/0329		v = GSHORT(p+1); dst = &bit.map[v];
1990/0623		if(v<0 || v>=conf.nbitmap || dst->ldepth<0)
1992/0621		if(v<0 || v>=bit.nmap || (dst=bit.map[v])==0)
1990/11211		error(Ebadbitmap);
1990/0504		off = 0; if(v == 0)
1992/0605/sys/src/9/port/devbit.c:1216,1230 – 1992/0621/sys/src/9/port/devbit.c:1234,1246
1992/0209		if(m < 9) error(Ebadblt); v = GSHORT(p+1); ff = &bit.font[v]; if(v<0 || v>=conf.nfont || ff->ldepth<0 || ff->b==0)
1992/0621		if(v<0 || v>=conf.nfont || (ff=bit.font[v])==0)
1992/0209		error(Ebadblt); l = GSHORT(p+3); if(l >= NFCACHE+NFLOOK) error(Ebadblt); v = GSHORT(p+5); f = &bit.subfont[v]; if(v<0 || v>=conf.nsubfont || f->bits->ldepth<0)
1992/0621		if(v<0 || v>=conf.nsubfont || (f=bit.subfont[v])==0)
1992/0209		error(Ebadblt); nw = GSHORT(p+7); if(nw >= f->n)
1992/0605/sys/src/9/port/devbit.c:1249,1255 – 1992/0621/sys/src/9/port/devbit.c:1265,1271
1991/0706		error(Ebadbitmap); m -= 3; p += 3; nw = 1 << (1 << bit.map[v].ldepth);
1992/0621		nw = 1 << (1 << gscreen.ldepth);
1991/0706		if(m < 12*nw) error(Ebadblt); ok = 1;
1992/0605/sys/src/9/port/devbit.c:1273,1293 – 1992/0621/sys/src/9/port/devbit.c:1289,1308
1990/0324		return n; }
1992/0209		GBitmap*
1992/0621		int
1992/0209		bitalloc(Rectangle rect, int ld) { GBitmap *bp;
1992/0621		GBitmap *b, **bp, **ep;
1992/0209		ulong l, ws, nw; long t;
1992/0621		int i;
1992/0209		if(bit.free == 0) error(Enobitmap);
1992/0621		print("bitalloc %lux\n", bit.wfree);
1992/0209		ws = 1<<(5-ld); /* pixels per word */
1992/0519		if(rect.min.x >= 0) {
1992/0621		if(rect.min.x >= 0){
1992/0519		l = (rect.max.x+ws-1)/ws; l -= rect.min.x/ws; }
1992/0209		else{ /* make positive before divide */
1992/0621		}else{ /* make positive before divide */
1992/0209		t = (-rect.min.x)+ws-1; t = (t/ws)*ws; l = (t+rect.max.x+ws-1)/ws;
1992/0605/sys/src/9/port/devbit.c:1298,1334 – 1992/0621/sys/src/9/port/devbit.c:1313,1375
1992/0209		if(bit.wfree+2+nw > bit.words+bit.nwords) error(Enobitstore); } bp = bit.free; bit.free = (GBitmap*)(bp->base);
1992/0621		b = smalloc(sizeof(GBitmap));
1992/0209		*bit.wfree++ = nw; *bit.wfree++ = (ulong)bp; bp->base = bit.wfree; memset(bp->base, 0, nw*sizeof(ulong));
1992/0621		*bit.wfree++ = (ulong)b; b->base = bit.wfree; memset(b->base, 0, nw*sizeof(ulong));
1992/0209		bit.wfree += nw; bp->zero = l*rect.min.y;
1992/0621		b->zero = l*rect.min.y;
1992/0209		if(rect.min.x >= 0) bp->zero += rect.min.x/ws;
1992/0621		b->zero += rect.min.x/ws;
1992/0209		else bp->zero -= (-rect.min.x+ws-1)/ws; bp->zero = -bp->zero; bp->width = l; bp->ldepth = ld; bp->r = rect;
1992/0604		bp->clipr = rect;
1992/0209		bp->cache = 0; return bp;
1992/0621		b->zero -= (-rect.min.x+ws-1)/ws; b->zero = -b->zero; b->width = l; b->ldepth = ld; b->r = rect; b->clipr = rect; b->cache = 0; /* worth doing better than linear lookup? */ ep = bit.map+bit.nmap; for(bp=bit.map; bp<ep; bp++) if(*bp == 0) break; if(bp == ep){ bp = bit.map; bit.map = smalloc((bit.nmap+DMAP)*sizeof(GBitmap*)); memmove(bit.map, bp, bit.nmap*sizeof(GBitmap*)); free(bp); bp = bit.map+bit.nmap; bit.nmap += DMAP; } *bp = b; return bp-bit.map;
1992/0209		}
1990/0324		void
1990/0902		bitfree(GBitmap *bp)
1992/0621		bitfree(GBitmap *b)
1990/0327		{
1990/05313		bp->base[-1] = 0;
1990/0327		bp->ldepth = -1; bp->base = (ulong*)bit.free; bit.free = bp;
1992/0621		b->base[-1] = 0; free(b);
1990/0327		}
1992/0209		void
1992/0621		fontfree(GFont *f) { if(f->b) bitfree(f->b); free(f); } void subfontfree(GSubfont *s) { free(s->info); free(s); } void
1992/0209		bitstring(GBitmap *bp, Point pt, GFont *f, uchar *p, long l, Fcode fc) { int full;
1992/0605/sys/src/9/port/devbit.c:1395,1410 – 1992/0621/sys/src/9/port/devbit.c:1436,1441
1992/0209		}
1990/08101		QLock bitlock;
1992/0209		GBitmap*
1990/08101		id2bit(int k) {
1990/0902		GBitmap *bp;
1990/08101		bp = &bit.map[k]; if(k<0 || k>=conf.nbitmap || bp->ldepth < 0)
1990/11211		error(Ebadbitmap);
1990/08101		return bp; }
1990/0327		void bitcompact(void)