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UPDATED: sdefl and sinfl DEFLATE compression libraries

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This commit is contained in:
Ray
2023-05-30 21:12:03 +02:00
parent 15cbf313bb
commit 924bb7226b
2 changed files with 144 additions and 108 deletions
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65
src/external/sdefl.h vendored
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@ -38,10 +38,10 @@ this file implementation in *one* C or C++ file to prevent collisions.
| zlib 1.2.11 -1 | 72 MB/s | 307 MB/s | 42298774 | 42.30 |
| zlib 1.2.11 -6 | 24 MB/s | 313 MB/s | 36548921 | 36.55 |
| zlib 1.2.11 -9 | 20 MB/s | 314 MB/s | 36475792 | 36.48 |
| sdefl 1.0 -0 | 127 MB/s | 371 MB/s | 40004116 | 39.88 |
| sdefl 1.0 -1 | 111 MB/s | 398 MB/s | 38940674 | 38.82 |
| sdefl 1.0 -5 | 45 MB/s | 420 MB/s | 36577183 | 36.46 |
| sdefl 1.0 -7 | 38 MB/s | 423 MB/s | 36523781 | 36.41 |
| sdefl 1.0 -0 | 127 MB/s | 355 MB/s | 40004116 | 39.88 |
| sdefl 1.0 -1 | 111 MB/s | 413 MB/s | 38940674 | 38.82 |
| sdefl 1.0 -5 | 45 MB/s | 436 MB/s | 36577183 | 36.46 |
| sdefl 1.0 -7 | 38 MB/s | 432 MB/s | 36523781 | 36.41 |
| libdeflate 1.3 -1 | 147 MB/s | 667 MB/s | 39597378 | 39.60 |
| libdeflate 1.3 -6 | 69 MB/s | 689 MB/s | 36648318 | 36.65 |
| libdeflate 1.3 -9 | 13 MB/s | 672 MB/s | 35197141 | 35.20 |
@ -50,20 +50,20 @@ this file implementation in *one* C or C++ file to prevent collisions.
### Compression
Results on the [Silesia compression corpus](http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia):
| File | Original | `sdefl 0` | `sdefl 5` | `sdefl 7` |
| :------ | ---------: | -----------------: | ---------: | ----------: |
| dickens | 10.192.446 | 4,260,187| 3,845,261| 3,833,657 |
| mozilla | 51.220.480 | 20,774,706 | 19,607,009 | 19,565,867 |
| mr | 9.970.564 | 3,860,531 | 3,673,460 | 3,665,627 |
| nci | 33.553.445 | 4,030,283 | 3,094,526 | 3,006,075 |
| ooffice | 6.152.192 | 3,320,063 | 3,186,373 | 3,183,815 |
| osdb | 10.085.684 | 3,919,646 | 3,649,510 | 3,649,477 |
| reymont | 6.627.202 | 2,263,378 | 1,857,588 | 1,827,237 |
| samba | 21.606.400 | 6,121,797 | 5,462,670 | 5,450,762 |
| sao | 7.251.944 | 5,612,421 | 5,485,380 | 5,481,765 |
| webster | 41.458.703 | 13,972,648 | 12,059,432 | 11,991,421 |
| xml | 5.345.280 | 886,620| 674,009 | 662,141 |
| x-ray | 8.474.240 | 6,304,655 | 6,244,779 | 6,244,779 |
| File | Original | `sdefl 0` | `sdefl 5` | `sdefl 7` |
| --------| -----------| -------------| ---------- | ------------|
| dickens | 10.192.446 | 4,260,187 | 3,845,261 | 3,833,657 |
| mozilla | 51.220.480 | 20,774,706 | 19,607,009 | 19,565,867 |
| mr | 9.970.564 | 3,860,531 | 3,673,460 | 3,665,627 |
| nci | 33.553.445 | 4,030,283 | 3,094,526 | 3,006,075 |
| ooffice | 6.152.192 | 3,320,063 | 3,186,373 | 3,183,815 |
| osdb | 10.085.684 | 3,919,646 | 3,649,510 | 3,649,477 |
| reymont | 6.627.202 | 2,263,378 | 1,857,588 | 1,827,237 |
| samba | 21.606.400 | 6,121,797 | 5,462,670 | 5,450,762 |
| sao | 7.251.944 | 5,612,421 | 5,485,380 | 5,481,765 |
| webster | 41.458.703 | 13,972,648 | 12,059,432 | 11,991,421 |
| xml | 5.345.280 | 886,620 | 674,009 | 662,141 |
| x-ray | 8.474.240 | 6,304,655 | 6,244,779 | 6,244,779 |
## License
```
@ -462,8 +462,12 @@ sdefl_match_codes(struct sdefl_match_codes *cod, int dist, int len) {
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 28
};
assert(len <= 258);
assert(dist <= 32768);
cod->ls = lslot[len];
cod->lc = 257 + cod->ls;
assert(cod->lc <= 285);
cod->dx = sdefl_ilog2(sdefl_npow2(dist) >> 2);
cod->dc = cod->dx ? ((cod->dx + 1) << 1) + (dist > dxmax[cod->dx]) : dist-1;
}
@ -501,7 +505,9 @@ sdefl_flush(unsigned char **dst, struct sdefl *s, int is_last,
sdefl_precode(&symcnt, freqs, items, s->cod.len.lit, s->cod.len.off);
sdefl_huff(lens, codes, freqs, SDEFL_PRE_MAX, SDEFL_PRE_CODES);
for (item_cnt = SDEFL_PRE_MAX; item_cnt > 4; item_cnt--) {
if (lens[perm[item_cnt - 1]]) break;
if (lens[perm[item_cnt - 1]]){
break;
}
}
/* block header */
sdefl_put(dst, s, is_last ? 0x01 : 0x00, 1); /* block */
@ -509,8 +515,9 @@ sdefl_flush(unsigned char **dst, struct sdefl *s, int is_last,
sdefl_put(dst, s, symcnt.lit - 257, 5);
sdefl_put(dst, s, symcnt.off - 1, 5);
sdefl_put(dst, s, item_cnt - 4, 4);
for (i = 0; i < item_cnt; ++i)
for (i = 0; i < item_cnt; ++i) {
sdefl_put(dst, s, lens[perm[i]], 3);
}
for (i = 0; i < symcnt.items; ++i) {
unsigned sym = items[i] & 0x1F;
sdefl_put(dst, s, (int)codes[sym], lens[sym]);
@ -521,12 +528,14 @@ sdefl_flush(unsigned char **dst, struct sdefl *s, int is_last,
}
/* block sequences */
for (i = 0; i < s->seq_cnt; ++i) {
if (s->seq[i].off >= 0)
if (s->seq[i].off >= 0) {
for (j = 0; j < s->seq[i].len; ++j) {
int c = in[s->seq[i].off + j];
sdefl_put(dst, s, (int)s->cod.word.lit[c], s->cod.len.lit[c]);
}
else sdefl_match(dst, s, -s->seq[i].off, s->seq[i].len);
} else {
sdefl_match(dst, s, -s->seq[i].off, s->seq[i].len);
}
}
sdefl_put(dst, s, (int)(s)->cod.word.lit[SDEFL_EOB], (s)->cod.len.lit[SDEFL_EOB]);
memset(&s->freq, 0, sizeof(s->freq));
@ -579,12 +588,13 @@ sdefl_compr(struct sdefl *s, unsigned char *out, const unsigned char *in,
for (n = 0; n < SDEFL_HASH_SIZ; ++n) {
s->tbl[n] = SDEFL_NIL;
}
do {int blk_end = i + SDEFL_BLK_MAX < in_len ? i + SDEFL_BLK_MAX : in_len;
do {int blk_end = ((i + SDEFL_BLK_MAX) < in_len) ? (i + SDEFL_BLK_MAX) : in_len;
while (i < blk_end) {
struct sdefl_match m = {0};
int max_match = ((in_len-i)>SDEFL_MAX_MATCH) ? SDEFL_MAX_MATCH:(in_len-i);
int left = blk_end - i;
int max_match = (left >= SDEFL_MAX_MATCH) ? SDEFL_MAX_MATCH : left;
int nice_match = pref[lvl] < max_match ? pref[lvl] : max_match;
int run = 1, inc = 1, run_inc;
int run = 1, inc = 1, run_inc = 0;
if (max_match > SDEFL_MIN_MATCH) {
sdefl_fnd(&m, s, max_chain, max_match, in, i);
}
@ -615,9 +625,11 @@ sdefl_compr(struct sdefl *s, unsigned char *out, const unsigned char *in,
unsigned h = sdefl_hash32(&in[i]);
s->prv[i&SDEFL_WIN_MSK] = s->tbl[h];
s->tbl[h] = i, i += inc;
assert(i <= blk_end);
}
} else {
i += run_inc;
assert(i <= blk_end);
}
}
if (litlen) {
@ -627,8 +639,9 @@ sdefl_compr(struct sdefl *s, unsigned char *out, const unsigned char *in,
sdefl_flush(&q, s, blk_end == in_len, in);
} while (i < in_len);
if (s->bitcnt)
if (s->bitcnt > 0)
sdefl_put(&q, s, 0x00, 8 - s->bitcnt);
return (int)(q - out);
}
extern int