public static int PDJPG_EscapeEncodeBuffer(BytePtr ibuf, int isz,
BytePtr obuf, int osz)
{
BytePtr cs, ct, cse, cte;
cs = ibuf; cse = ibuf + isz;
ct = obuf; cte = obuf + osz;
while ((cs < cse) && (ct < cte))
{
if (cs[0] == 0xFF)
{
cs++;
ct.emit(0xFF);
ct.emit(0x00);
continue;
}
ct.emit(cs.next());
}
if (ct >= cte) return (-1);
return (ct - obuf);
}
public static int PDJPG_EscapeDecodeSingleBuffer(BytePtr buf, int sz)
{
BytePtr cs, ct, cse, cte;
cs = buf; cse = buf + sz;
ct = buf; cte = buf + sz;
while ((cs < cse) && (ct < cte))
{
if ((cs[0] == 0xFF) && (cs[1] == 0x00))
{ cs += 2; ct.emit(0xFF); continue; }
if ((cs[0] == 0xFF) && (cs[1] <= 0x0F))
{ ct.emit(0xFF); ct.emit(cs[1] - 1); cs += 2; continue; }
ct.emit(cs.next());
}
if (ct >= cte) return (-1);
return (ct - buf);
}