#include <u.h>#include <libc.h>#include <draw.h>#include "dat.h"#include "fns.h" /* like loadimage(2) but reverses scanline order and translates per cmap */intloadbmp(Image *i, Rectangle r, uchar *data, int ndata, uchar *cmap){	int n, bpl;	uchar *a; 	bpl = bytesperline(r, i->depth);	n = bpl*Dy(r);	if(n > ndata){		werrstr("loadbmp: insufficient data");		return -1;	} 	if(i->depth == 8)		for(a = data; a <data+ndata; a++)			*a = cmap[*a]; 	/* BUG: padding ignored 	2.2.9.1.1.3.1.2.2 Bitmap Data (TS_BITMAP_DATA): 		❝Uncompressed bitmap data is formatted as a bottom-up,		left-to-right series of pixels.  Each pixel is a whole		number of bytes.  Each row contains a multiple of four		bytes (including up to three bytes of padding, as		necessary).❞ 	*/ 	n = bpl;	while(r.max.y > r.min.y){		a = bufimage(i->display, 21+n);		if(a == nil){			werrstr("bufimage failed");			return -1;		}		a[0] = 'y';		iputl(a+1, i->id);		iputl(a+5, r.min.x);		iputl(a+9, r.max.y-1);		iputl(a+13, r.max.x);		iputl(a+17, r.max.y);		memmove(a+21, data, n);		ndata += n;		data += n;		r.max.y--;	}	if(flushimage(i->display, 0) < 0)		return -1;	return ndata;} intloadrle(Image *i, Rectangle r, uchar *data, int ndata, uchar *cmap){	int nb, bpl;	uchar *buf; 	bpl = bytesperline(r, i->depth);	nb = bpl*Dy(r);	buf = emalloc(nb); 	if(unrle(buf, nb, data, ndata, bpl, bpl/Dx(r)) == nil){		werrstr("loadrle: decompression failed");		free(buf);		return -1;	}	if(loadbmp(i, r, buf, nb, cmap) < 0){		werrstr("loadrle: r=%R i->r=%R: %r", r, i->r);		free(buf);		return -1;	}	free(buf);	return nb;} voidloadcmap(Rdp* c, Share* as){	int i, n;	uchar *p,  *ep, *cmap; 	if(as->type != ShUcmap){		fprint(2, "loadcmap: bad share type");		return;	}	p = as->data;	ep = as->data + as->ndata;	cmap = c->cmap; 	n = igets(p+4);	p += 8;	if(n > sizeof(c->cmap)){		fprint(2, "loadcmap: data too big");		return;	}	if(p+3*n > ep)		sysfatal(Eshort);	for(i = 0; i<n; p+=3)		cmap[i++] = rgb2cmap(p[0], p[1], p[2]);}