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JPLOGO/READP.C

@@ -0,0 +1,64 @@
+struct st_readp
+{
+	int	magic;
+	int	wid;
+	int	hig;
+	int	cols;
+	int	add;
+};
+
+void	readp(char *dest,int row,char *src)
+{
+	int	bytes,a,b;
+	struct st_readp *hdr;
+	hdr=(struct st_readp *)src;
+	if(row==-1)
+	{
+		memcpy(dest,src+16,hdr->cols*3);
+		return;
+	}
+	if(row>=hdr->hig) return;
+	src+=hdr->add*16;
+	while(row)
+	{
+		src+=*(int *)src;
+		src+=2;
+		row--;
+	}
+	bytes=*(int *)src;
+	src+=2;
+	_asm
+	{
+		push	si
+		push	ds
+		push	di
+		push	es
+		mov	cx,bytes
+		lds	si,src
+		add	cx,si
+		les	di,dest
+	l1:	mov	al,ds:[si]
+		inc	si
+		or	al,al
+		jns	l2
+		mov	ah,al
+		and	ah,7fh	
+		mov	al,ds:[si]
+		inc	si
+	l4:	mov	es:[di],al
+		inc	di
+		dec	ah
+		jnz	l4
+		cmp	si,cx
+		jb	l1
+		jmp	l3
+	l2:	mov	es:[di],al
+		inc	di
+		cmp	si,cx
+		jb	l1
+	l3:	pop	es
+		pop	di
+		pop	ds
+		pop	si
+	}
+}