Cross Reference: /src/sys/net/zlib.c

Lines Matching defs:lookahead
431     uInt lookahead;              /* number of valid bytes ahead in window */
545 /* Minimum amount of lookahead, except at the end of the input file.
718 /* Minimum amount of lookahead, except at the end of the input file.
927      * s->lookahead stays null, so s->ins_h will be recomputed at the next
1119     if (strm->avail_in != 0 || s->lookahead != 0 ||
1327     s->lookahead = 0;
1343  * OUT assertion: the match length is not greater than s->lookahead.
1392     if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
1394     Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
1414          * lookahead only every 4th comparison; the 128th check will be made
1417          * to check more often for insufficient lookahead.
1452         /* We check for insufficient lookahead only every 8th comparison;
1483     if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
1484     return s->lookahead;
1505     Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
1524     /* We check for insufficient lookahead only every 8th comparison;
1541     return len <= s->lookahead ? len : s->lookahead;
1575  * Fill the window when the lookahead becomes insufficient.
1576  * Updates strstart and lookahead.
1578  * IN assertion: lookahead < MIN_LOOKAHEAD
1592         more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
1595         if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
1600              * and lookahead == 1 (input done one byte at time)
1604         /* If the window is almost full and there is insufficient lookahead,
1643          *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
1644          *    more == window_size - lookahead - strstart
1649          *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
1655         n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
1656         s->lookahead += n;
1659         if (s->lookahead >= MIN_MATCH) {
1670     } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
1718         if (s->lookahead <= 1) {
1724             if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;
1726             if (s->lookahead == 0) break; /* flush the current block */
1730 	s->strstart += s->lookahead;
1731 	s->lookahead = 0;
1737 	    s->lookahead = (uInt)(s->strstart - max_start);
1765         /* Make sure that we always have enough lookahead, except
1770         if (s->lookahead < MIN_LOOKAHEAD) {
1772             if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
1775             if (s->lookahead == 0) break; /* flush the current block */
1781         if (s->lookahead >= MIN_MATCH) {
1804             s->lookahead -= s->match_length;
1811                 s->lookahead >= MIN_MATCH) {
1831                 /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
1839             s->lookahead--;
1860         /* Make sure that we always have enough lookahead, except
1865         if (s->lookahead < MIN_LOOKAHEAD) {
1867             if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
1870             if (s->lookahead == 0) break; /* flush the current block */
1876         if (s->lookahead >= MIN_MATCH) {
1910             uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
1920              * enough lookahead, the last two strings are not inserted in
1923             s->lookahead -= s->prev_length-1;
1947             s->lookahead--;
1955             s->lookahead--;
2495     s->last_eob_len = 8; /* enough lookahead for inflate */
2979  * Send one empty static block to give enough lookahead for inflate.
2981  * The current inflate code requires 9 bits of lookahead. If the
2983  * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
2998      * (10 - bi_valid) bits. The lookahead for the last real code (before
3289     s->last_eob_len = 8; /* enough lookahead for inflate */
4259         bl = 9;         /* must be <= 9 for lookahead assumptions */
4260         bd = 6;         /* must be <= 9 for lookahead assumptions */
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