Class: MultiCompress::Deflater
- Inherits:
-
Object
- Object
- MultiCompress::Deflater
- Defined in:
- ext/multi_compress/multi_compress.c
Instance Method Summary collapse
- #close ⇒ Object
- #closed? ⇒ Boolean
- #finish ⇒ Object
- #flush ⇒ Object
- #initialize(*args) ⇒ Object constructor
- #reset ⇒ Object
- #write(chunk) ⇒ Object
Constructor Details
#initialize(*args) ⇒ Object
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 |
# File 'ext/multi_compress/multi_compress.c', line 2088
static VALUE deflater_initialize(int argc, VALUE *argv, VALUE self) {
VALUE opts;
scan_zero_required_keywords(argc, argv, &opts);
mc_opts_t parsed_opts;
mc_parse_opts(opts, &parsed_opts);
reject_algorithm_keyword(&parsed_opts);
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
VALUE algo_sym = parsed_opts.algo;
VALUE level_val = parsed_opts.level;
VALUE dict_val = parsed_opts.dictionary;
d->algo = NIL_P(algo_sym) ? ALGO_ZSTD : sym_to_algo(algo_sym);
d->level = resolve_level(d->algo, level_val);
d->closed = 0;
d->finished = 0;
dictionary_t *dict = NULL;
if (!NIL_P(dict_val)) {
if (d->algo == ALGO_LZ4) {
rb_raise(eUnsupportedError, "LZ4 does not support dictionaries");
}
dict = opt_dictionary(dict_val);
dictionary_ivar_set(self, dict_val);
}
switch (d->algo) {
case ALGO_ZSTD: {
d->ctx.zstd = ZSTD_createCStream();
if (!d->ctx.zstd)
rb_raise(eMemError, "zstd: failed to create stream");
if (dict) {
ZSTD_CCtx_reset(d->ctx.zstd, ZSTD_reset_session_only);
ZSTD_CCtx_setParameter(d->ctx.zstd, ZSTD_c_compressionLevel, d->level);
size_t r = ZSTD_CCtx_loadDictionary(d->ctx.zstd, dict->data, dict->size);
if (ZSTD_isError(r))
rb_raise(eError, "zstd dict load: %s", ZSTD_getErrorName(r));
} else {
size_t r = ZSTD_initCStream(d->ctx.zstd, d->level);
if (ZSTD_isError(r))
rb_raise(eError, "zstd init: %s", ZSTD_getErrorName(r));
}
break;
}
case ALGO_BROTLI: {
d->ctx.brotli = BrotliEncoderCreateInstance(NULL, NULL, NULL);
if (!d->ctx.brotli)
rb_raise(eMemError, "brotli: failed to create encoder");
if (!BrotliEncoderSetParameter(d->ctx.brotli, BROTLI_PARAM_QUALITY, d->level)) {
BrotliEncoderDestroyInstance(d->ctx.brotli);
d->ctx.brotli = NULL;
rb_raise(eError, "brotli: failed to set quality parameter");
}
if (dict) {
BrotliEncoderPreparedDictionary *pd =
BrotliEncoderPrepareDictionary(BROTLI_SHARED_DICTIONARY_RAW, dict->size, dict->data,
BROTLI_MAX_QUALITY, NULL, NULL, NULL);
if (!pd) {
BrotliEncoderDestroyInstance(d->ctx.brotli);
d->ctx.brotli = NULL;
rb_raise(eMemError, "brotli: failed to prepare dictionary");
}
if (!BrotliEncoderAttachPreparedDictionary(d->ctx.brotli, pd)) {
BrotliEncoderDestroyPreparedDictionary(pd);
BrotliEncoderDestroyInstance(d->ctx.brotli);
d->ctx.brotli = NULL;
rb_raise(eError, "brotli: failed to attach dictionary");
}
BrotliEncoderDestroyPreparedDictionary(pd);
}
break;
}
case ALGO_LZ4: {
d->ctx.lz4 = LZ4_createStream();
if (!d->ctx.lz4)
rb_raise(eMemError, "lz4: failed to create stream");
LZ4_resetStream(d->ctx.lz4);
d->lz4_ring.buf = ALLOC_N(char, LZ4_RING_BUFFER_TOTAL);
d->lz4_ring.ring_offset = 0;
d->lz4_ring.pending = 0;
break;
}
}
return self;
}
|
Instance Method Details
#close ⇒ Object
2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 |
# File 'ext/multi_compress/multi_compress.c', line 2630
static VALUE deflater_close(VALUE self) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
if (d->closed)
return Qnil;
switch (d->algo) {
case ALGO_ZSTD:
if (d->ctx.zstd) {
ZSTD_freeCStream(d->ctx.zstd);
d->ctx.zstd = NULL;
}
break;
case ALGO_BROTLI:
if (d->ctx.brotli) {
BrotliEncoderDestroyInstance(d->ctx.brotli);
d->ctx.brotli = NULL;
}
break;
case ALGO_LZ4:
if (d->ctx.lz4) {
LZ4_freeStream(d->ctx.lz4);
d->ctx.lz4 = NULL;
}
break;
}
d->closed = 1;
return Qnil;
}
|
#closed? ⇒ Boolean
2660 2661 2662 2663 2664 |
# File 'ext/multi_compress/multi_compress.c', line 2660
static VALUE deflater_closed_p(VALUE self) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
return d->closed ? Qtrue : Qfalse;
}
|
#finish ⇒ Object
2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 |
# File 'ext/multi_compress/multi_compress.c', line 2473
static VALUE deflater_finish(VALUE self) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
if (d->closed)
rb_raise(eStreamError, "stream is closed");
if (d->finished)
return rb_binary_str_new("", 0);
d->finished = 1;
switch (d->algo) {
case ALGO_ZSTD: {
size_t out_cap = ZSTD_CStreamOutSize();
size_t result_cap = out_cap;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
size_t ret;
do {
if (result_len + out_cap > result_cap) {
result_cap *= 2;
grow_binary_str(result, result_len, result_cap);
}
ZSTD_outBuffer output = {RSTRING_PTR(result) + result_len, out_cap, 0};
ret = ZSTD_endStream(d->ctx.zstd, &output);
if (ZSTD_isError(ret))
rb_raise(eError, "zstd end stream: %s", ZSTD_getErrorName(ret));
result_len += output.pos;
} while (ret > 0);
rb_str_set_len(result, result_len);
return result;
}
case ALGO_BROTLI: {
size_t available_in = 0;
const uint8_t *next_in = NULL;
size_t result_cap = 1024;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
do {
size_t available_out = 0;
uint8_t *next_out = NULL;
BROTLI_BOOL ok =
BrotliEncoderCompressStream(d->ctx.brotli, BROTLI_OPERATION_FINISH, &available_in,
&next_in, &available_out, &next_out, NULL);
if (!ok)
rb_raise(eError, "brotli finish failed");
const uint8_t *out_data;
size_t out_size = 0;
out_data = BrotliEncoderTakeOutput(d->ctx.brotli, &out_size);
if (out_size > 0) {
if (result_len + out_size > result_cap) {
result_cap = (result_len + out_size) * 2;
grow_binary_str(result, result_len, result_cap);
}
memcpy(RSTRING_PTR(result) + result_len, out_data, out_size);
result_len += out_size;
}
} while (BrotliEncoderHasMoreOutput(d->ctx.brotli) ||
!BrotliEncoderIsFinished(d->ctx.brotli));
rb_str_set_len(result, result_len);
return result;
}
case ALGO_LZ4: {
size_t result_cap = 256;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
if (d->lz4_ring.pending > 0) {
VALUE block = lz4_compress_ring_block(d);
size_t blen = RSTRING_LEN(block);
if (blen > 0) {
if (blen + 4 > result_cap) {
result_cap = blen + 4;
grow_binary_str(result, result_len, result_cap);
}
memcpy(RSTRING_PTR(result), RSTRING_PTR(block), blen);
result_len = blen;
}
}
if (result_len + 4 > result_cap) {
result_cap = result_len + 4;
grow_binary_str(result, result_len, result_cap);
}
char *out = RSTRING_PTR(result) + result_len;
write_le_u32((uint8_t *)out, 0);
result_len += 4;
rb_str_set_len(result, result_len);
return result;
}
}
return rb_binary_str_new("", 0);
}
|
#flush ⇒ Object
2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 |
# File 'ext/multi_compress/multi_compress.c', line 2403
static VALUE deflater_flush(VALUE self) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
if (d->closed)
rb_raise(eStreamError, "stream is closed");
if (d->finished)
rb_raise(eStreamError, "stream is already finished");
switch (d->algo) {
case ALGO_ZSTD: {
size_t out_cap = ZSTD_CStreamOutSize();
size_t result_cap = out_cap;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
size_t ret;
do {
if (result_len + out_cap > result_cap) {
result_cap *= 2;
grow_binary_str(result, result_len, result_cap);
}
ZSTD_outBuffer output = {RSTRING_PTR(result) + result_len, out_cap, 0};
ret = ZSTD_flushStream(d->ctx.zstd, &output);
if (ZSTD_isError(ret))
rb_raise(eError, "zstd flush: %s", ZSTD_getErrorName(ret));
result_len += output.pos;
} while (ret > 0);
rb_str_set_len(result, result_len);
return result;
}
case ALGO_BROTLI: {
size_t available_in = 0;
const uint8_t *next_in = NULL;
size_t result_cap = 1024;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
do {
size_t available_out = 0;
uint8_t *next_out = NULL;
BROTLI_BOOL ok =
BrotliEncoderCompressStream(d->ctx.brotli, BROTLI_OPERATION_FLUSH, &available_in,
&next_in, &available_out, &next_out, NULL);
if (!ok)
rb_raise(eError, "brotli flush failed");
const uint8_t *out_data;
size_t out_size = 0;
out_data = BrotliEncoderTakeOutput(d->ctx.brotli, &out_size);
if (out_size > 0) {
if (result_len + out_size > result_cap) {
result_cap = (result_len + out_size) * 2;
grow_binary_str(result, result_len, result_cap);
}
memcpy(RSTRING_PTR(result) + result_len, out_data, out_size);
result_len += out_size;
}
} while (BrotliEncoderHasMoreOutput(d->ctx.brotli));
rb_str_set_len(result, result_len);
return result;
}
case ALGO_LZ4:
return lz4_compress_ring_block(d);
}
return rb_binary_str_new("", 0);
}
|
#reset ⇒ Object
2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 |
# File 'ext/multi_compress/multi_compress.c', line 2574
static VALUE deflater_reset(VALUE self) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
VALUE dict_val = dictionary_ivar_get(self);
dictionary_t *dict = NULL;
if (!NIL_P(dict_val)) {
TypedData_Get_Struct(dict_val, dictionary_t, &dictionary_type, dict);
}
switch (d->algo) {
case ALGO_ZSTD:
if (d->ctx.zstd) {
ZSTD_CCtx_reset(d->ctx.zstd, ZSTD_reset_session_only);
ZSTD_CCtx_setParameter(d->ctx.zstd, ZSTD_c_compressionLevel, d->level);
if (dict) {
size_t r = ZSTD_CCtx_loadDictionary(d->ctx.zstd, dict->data, dict->size);
if (ZSTD_isError(r))
rb_raise(eError, "zstd dict reload on reset: %s", ZSTD_getErrorName(r));
}
}
break;
case ALGO_BROTLI:
if (d->ctx.brotli) {
BrotliEncoderDestroyInstance(d->ctx.brotli);
d->ctx.brotli = BrotliEncoderCreateInstance(NULL, NULL, NULL);
if (!d->ctx.brotli)
rb_raise(eMemError, "brotli: failed to recreate encoder");
if (!BrotliEncoderSetParameter(d->ctx.brotli, BROTLI_PARAM_QUALITY, d->level))
rb_raise(eError, "brotli: failed to set quality on reset");
if (dict) {
BrotliEncoderPreparedDictionary *pd = BrotliEncoderPrepareDictionary(
BROTLI_SHARED_DICTIONARY_RAW, dict->size, dict->data, BROTLI_MAX_QUALITY, NULL,
NULL, NULL);
if (!pd)
rb_raise(eMemError, "brotli: failed to prepare dictionary on reset");
if (!BrotliEncoderAttachPreparedDictionary(d->ctx.brotli, pd)) {
BrotliEncoderDestroyPreparedDictionary(pd);
rb_raise(eError, "brotli: failed to reattach dictionary on reset");
}
BrotliEncoderDestroyPreparedDictionary(pd);
}
}
break;
case ALGO_LZ4:
if (d->ctx.lz4)
LZ4_resetStream(d->ctx.lz4);
d->lz4_ring.ring_offset = 0;
d->lz4_ring.pending = 0;
break;
}
d->closed = 0;
d->finished = 0;
return self;
}
|
#write(chunk) ⇒ Object
2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 |
# File 'ext/multi_compress/multi_compress.c', line 2213
static VALUE deflater_write(VALUE self, VALUE chunk) {
deflater_t *d;
TypedData_Get_Struct(self, deflater_t, &deflater_type, d);
if (d->closed)
rb_raise(eStreamError, "stream is closed");
if (d->finished)
rb_raise(eStreamError, "stream is already finished");
StringValue(chunk);
const char *src = RSTRING_PTR(chunk);
size_t slen = RSTRING_LEN(chunk);
const algo_policy_t *policy = algo_policy(d->algo);
if (slen == 0)
return rb_binary_str_new("", 0);
switch (d->algo) {
case ALGO_ZSTD: {
ZSTD_inBuffer input = {src, slen, 0};
size_t out_cap = ZSTD_CStreamOutSize();
size_t result_cap = out_cap > slen ? out_cap : slen;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
VALUE scheduler = current_fiber_scheduler();
while (input.pos < input.size) {
if (result_len + out_cap > result_cap) {
result_cap = result_cap * 2;
grow_binary_str(result, result_len, result_cap);
}
ZSTD_outBuffer output = {RSTRING_PTR(result) + result_len, out_cap, 0};
{
work_exec_mode_t mode = select_fiber_nogvl_or_direct_mode(
scheduler, input.size - input.pos, policy->fiber_stream_threshold,
policy->gvl_unlock_threshold);
if (mode == WORK_EXEC_FIBER) {
zstd_stream_chunk_fiber_t fargs = {
.cstream = d->ctx.zstd,
.input = input,
.output = output,
.result = 0,
};
RUN_WITH_EXEC_MODE(mode, zstd_stream_chunk_fiber_nogvl, fargs);
input.pos = fargs.input.pos;
output.pos = fargs.output.pos;
if (ZSTD_isError(fargs.result))
rb_raise(eError, "zstd compress stream: %s",
ZSTD_getErrorName(fargs.result));
} else if (mode == WORK_EXEC_NOGVL) {
zstd_stream_chunk_args_t args = {
.cstream = d->ctx.zstd,
.output = &output,
.input = &input,
.result = 0,
};
RUN_WITH_EXEC_MODE(mode, zstd_compress_stream_chunk_nogvl, args);
if (ZSTD_isError(args.result))
rb_raise(eError, "zstd compress stream: %s",
ZSTD_getErrorName(args.result));
} else {
size_t ret = ZSTD_compressStream(d->ctx.zstd, &output, &input);
if (ZSTD_isError(ret))
rb_raise(eError, "zstd compress stream: %s", ZSTD_getErrorName(ret));
}
}
result_len += output.pos;
}
rb_str_set_len(result, result_len);
RB_GC_GUARD(chunk);
return result;
}
case ALGO_BROTLI: {
size_t available_in = slen;
const uint8_t *next_in = (const uint8_t *)src;
size_t result_cap = slen;
if (result_cap < 1024)
result_cap = 1024;
VALUE result = rb_binary_str_buf_reserve(result_cap);
size_t result_len = 0;
VALUE scheduler = current_fiber_scheduler();
int use_fiber = (scheduler != Qnil);
size_t fiber_counter = 0;
while (available_in > 0 || BrotliEncoderHasMoreOutput(d->ctx.brotli)) {
size_t available_out = 0;
uint8_t *next_out = NULL;
BROTLI_BOOL ok;
if (use_fiber &&
select_fiber_or_direct_mode(scheduler, available_in,
policy->fiber_stream_threshold) == WORK_EXEC_FIBER) {
brotli_stream_chunk_fiber_t fargs = {
.enc = d->ctx.brotli,
.op = BROTLI_OPERATION_PROCESS,
.available_in = available_in,
.next_in = next_in,
.available_out = available_out,
.next_out = next_out,
.result = BROTLI_FALSE,
};
RUN_VIA_FIBER_WORKER(brotli_stream_chunk_fiber_nogvl, fargs);
available_in = fargs.available_in;
next_in = fargs.next_in;
available_out = fargs.available_out;
next_out = fargs.next_out;
ok = fargs.result;
} else {
ok = BrotliEncoderCompressStream(d->ctx.brotli, BROTLI_OPERATION_PROCESS,
&available_in, &next_in, &available_out, &next_out,
NULL);
}
if (!ok)
rb_raise(eError, "brotli compress stream failed");
const uint8_t *out_data;
size_t out_size = 0;
out_data = BrotliEncoderTakeOutput(d->ctx.brotli, &out_size);
if (out_size > 0) {
if (result_len + out_size > result_cap) {
result_cap = (result_len + out_size) * 2;
grow_binary_str(result, result_len, result_cap);
}
memcpy(RSTRING_PTR(result) + result_len, out_data, out_size);
result_len += out_size;
if (use_fiber) {
int did_yield = 0;
fiber_counter = fiber_maybe_yield(fiber_counter, out_size,
policy->fiber_yield_chunk, &did_yield);
(void)did_yield;
}
}
}
rb_str_set_len(result, result_len);
RB_GC_GUARD(chunk);
return result;
}
case ALGO_LZ4: {
VALUE result = rb_binary_str_buf_reserve(0);
size_t result_len = 0;
size_t result_cap = 0;
int use_fiber = has_fiber_scheduler();
size_t fiber_counter = 0;
while (slen > 0) {
size_t space = LZ4_RING_BUFFER_SIZE - d->lz4_ring.pending;
size_t copy = slen < space ? slen : space;
if (d->lz4_ring.ring_offset + copy > LZ4_RING_BUFFER_TOTAL) {
rb_raise(eError, "lz4: ring buffer overflow");
}
memcpy(d->lz4_ring.buf + d->lz4_ring.ring_offset, src, copy);
d->lz4_ring.ring_offset += copy;
d->lz4_ring.pending += copy;
src += copy;
slen -= copy;
if (d->lz4_ring.pending >= (size_t)LZ4_RING_BUFFER_SIZE) {
VALUE block = lz4_compress_ring_block(d);
size_t blen = RSTRING_LEN(block);
if (blen > 0) {
if (result_len + blen > result_cap) {
result_cap = (result_len + blen) * 2;
if (result_cap < 256)
result_cap = 256;
grow_binary_str(result, result_len, result_cap);
}
memcpy(RSTRING_PTR(result) + result_len, RSTRING_PTR(block), blen);
result_len += blen;
}
if (use_fiber) {
int did_yield = 0;
fiber_counter = fiber_maybe_yield(fiber_counter, LZ4_RING_BUFFER_SIZE,
policy->fiber_yield_chunk, &did_yield);
(void)did_yield;
}
}
}
rb_str_set_len(result, result_len);
RB_GC_GUARD(chunk);
return result;
}
}
return rb_binary_str_new("", 0);
}
|