702 lines
21 KiB
C
702 lines
21 KiB
C
/*
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
* You may select, at your option, one of the above-listed licenses.
|
|
*/
|
|
|
|
#include "method.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define ZSTD_STATIC_LINKING_ONLY
|
|
#include <zstd.h>
|
|
|
|
#define MIN(x, y) ((x) < (y) ? (x) : (y))
|
|
|
|
static char const* g_zstdcli = NULL;
|
|
|
|
void method_set_zstdcli(char const* zstdcli) {
|
|
g_zstdcli = zstdcli;
|
|
}
|
|
|
|
/**
|
|
* Macro to get a pointer of type, given ptr, which is a member variable with
|
|
* the given name, member.
|
|
*
|
|
* method_state_t* base = ...;
|
|
* buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
*/
|
|
#define container_of(ptr, type, member) \
|
|
((type*)(ptr == NULL ? NULL : (char*)(ptr)-offsetof(type, member)))
|
|
|
|
/** State to reuse the same buffers between compression calls. */
|
|
typedef struct {
|
|
method_state_t base;
|
|
data_buffers_t inputs; /**< The input buffer for each file. */
|
|
data_buffer_t dictionary; /**< The dictionary. */
|
|
data_buffer_t compressed; /**< The compressed data buffer. */
|
|
data_buffer_t decompressed; /**< The decompressed data buffer. */
|
|
} buffer_state_t;
|
|
|
|
static size_t buffers_max_size(data_buffers_t buffers) {
|
|
size_t max = 0;
|
|
for (size_t i = 0; i < buffers.size; ++i) {
|
|
if (buffers.buffers[i].size > max)
|
|
max = buffers.buffers[i].size;
|
|
}
|
|
return max;
|
|
}
|
|
|
|
static method_state_t* buffer_state_create(data_t const* data) {
|
|
buffer_state_t* state = (buffer_state_t*)calloc(1, sizeof(buffer_state_t));
|
|
if (state == NULL)
|
|
return NULL;
|
|
state->base.data = data;
|
|
state->inputs = data_buffers_get(data);
|
|
state->dictionary = data_buffer_get_dict(data);
|
|
size_t const max_size = buffers_max_size(state->inputs);
|
|
state->compressed = data_buffer_create(ZSTD_compressBound(max_size));
|
|
state->decompressed = data_buffer_create(max_size);
|
|
return &state->base;
|
|
}
|
|
|
|
static void buffer_state_destroy(method_state_t* base) {
|
|
if (base == NULL)
|
|
return;
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
free(state);
|
|
}
|
|
|
|
static int buffer_state_bad(
|
|
buffer_state_t const* state,
|
|
config_t const* config) {
|
|
if (state == NULL) {
|
|
fprintf(stderr, "buffer_state_t is NULL\n");
|
|
return 1;
|
|
}
|
|
if (state->inputs.size == 0 || state->compressed.data == NULL ||
|
|
state->decompressed.data == NULL) {
|
|
fprintf(stderr, "buffer state allocation failure\n");
|
|
return 1;
|
|
}
|
|
if (config->use_dictionary && state->dictionary.data == NULL) {
|
|
fprintf(stderr, "dictionary loading failed\n");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static result_t simple_compress(method_state_t* base, config_t const* config) {
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
|
|
if (buffer_state_bad(state, config))
|
|
return result_error(result_error_system_error);
|
|
|
|
/* Keep the tests short by skipping directories, since behavior shouldn't
|
|
* change.
|
|
*/
|
|
if (base->data->type != data_type_file)
|
|
return result_error(result_error_skip);
|
|
|
|
if (config->advanced_api_only)
|
|
return result_error(result_error_skip);
|
|
|
|
if (config->use_dictionary || config->no_pledged_src_size)
|
|
return result_error(result_error_skip);
|
|
|
|
/* If the config doesn't specify a level, skip. */
|
|
int const level = config_get_level(config);
|
|
if (level == CONFIG_NO_LEVEL)
|
|
return result_error(result_error_skip);
|
|
|
|
data_buffer_t const input = state->inputs.buffers[0];
|
|
|
|
/* Compress, decompress, and check the result. */
|
|
state->compressed.size = ZSTD_compress(
|
|
state->compressed.data,
|
|
state->compressed.capacity,
|
|
input.data,
|
|
input.size,
|
|
level);
|
|
if (ZSTD_isError(state->compressed.size))
|
|
return result_error(result_error_compression_error);
|
|
|
|
state->decompressed.size = ZSTD_decompress(
|
|
state->decompressed.data,
|
|
state->decompressed.capacity,
|
|
state->compressed.data,
|
|
state->compressed.size);
|
|
if (ZSTD_isError(state->decompressed.size))
|
|
return result_error(result_error_decompression_error);
|
|
if (data_buffer_compare(input, state->decompressed))
|
|
return result_error(result_error_round_trip_error);
|
|
|
|
result_data_t data;
|
|
data.total_size = state->compressed.size;
|
|
return result_data(data);
|
|
}
|
|
|
|
static result_t compress_cctx_compress(
|
|
method_state_t* base,
|
|
config_t const* config) {
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
|
|
if (buffer_state_bad(state, config))
|
|
return result_error(result_error_system_error);
|
|
|
|
if (config->no_pledged_src_size)
|
|
return result_error(result_error_skip);
|
|
|
|
if (base->data->type != data_type_dir)
|
|
return result_error(result_error_skip);
|
|
|
|
if (config->advanced_api_only)
|
|
return result_error(result_error_skip);
|
|
|
|
int const level = config_get_level(config);
|
|
|
|
ZSTD_CCtx* cctx = ZSTD_createCCtx();
|
|
ZSTD_DCtx* dctx = ZSTD_createDCtx();
|
|
if (cctx == NULL || dctx == NULL) {
|
|
fprintf(stderr, "context creation failed\n");
|
|
return result_error(result_error_system_error);
|
|
}
|
|
|
|
result_t result;
|
|
result_data_t data = {.total_size = 0};
|
|
for (size_t i = 0; i < state->inputs.size; ++i) {
|
|
data_buffer_t const input = state->inputs.buffers[i];
|
|
ZSTD_parameters const params =
|
|
config_get_zstd_params(config, input.size, state->dictionary.size);
|
|
|
|
if (level == CONFIG_NO_LEVEL)
|
|
state->compressed.size = ZSTD_compress_advanced(
|
|
cctx,
|
|
state->compressed.data,
|
|
state->compressed.capacity,
|
|
input.data,
|
|
input.size,
|
|
config->use_dictionary ? state->dictionary.data : NULL,
|
|
config->use_dictionary ? state->dictionary.size : 0,
|
|
params);
|
|
else if (config->use_dictionary)
|
|
state->compressed.size = ZSTD_compress_usingDict(
|
|
cctx,
|
|
state->compressed.data,
|
|
state->compressed.capacity,
|
|
input.data,
|
|
input.size,
|
|
state->dictionary.data,
|
|
state->dictionary.size,
|
|
level);
|
|
else
|
|
state->compressed.size = ZSTD_compressCCtx(
|
|
cctx,
|
|
state->compressed.data,
|
|
state->compressed.capacity,
|
|
input.data,
|
|
input.size,
|
|
level);
|
|
|
|
if (ZSTD_isError(state->compressed.size)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
|
|
if (config->use_dictionary)
|
|
state->decompressed.size = ZSTD_decompress_usingDict(
|
|
dctx,
|
|
state->decompressed.data,
|
|
state->decompressed.capacity,
|
|
state->compressed.data,
|
|
state->compressed.size,
|
|
state->dictionary.data,
|
|
state->dictionary.size);
|
|
else
|
|
state->decompressed.size = ZSTD_decompressDCtx(
|
|
dctx,
|
|
state->decompressed.data,
|
|
state->decompressed.capacity,
|
|
state->compressed.data,
|
|
state->compressed.size);
|
|
if (ZSTD_isError(state->decompressed.size)) {
|
|
result = result_error(result_error_decompression_error);
|
|
goto out;
|
|
}
|
|
if (data_buffer_compare(input, state->decompressed)) {
|
|
result = result_error(result_error_round_trip_error);
|
|
goto out;
|
|
}
|
|
|
|
data.total_size += state->compressed.size;
|
|
}
|
|
|
|
result = result_data(data);
|
|
out:
|
|
ZSTD_freeCCtx(cctx);
|
|
ZSTD_freeDCtx(dctx);
|
|
return result;
|
|
}
|
|
|
|
/** Generic state creation function. */
|
|
static method_state_t* method_state_create(data_t const* data) {
|
|
method_state_t* state = (method_state_t*)malloc(sizeof(method_state_t));
|
|
if (state == NULL)
|
|
return NULL;
|
|
state->data = data;
|
|
return state;
|
|
}
|
|
|
|
static void method_state_destroy(method_state_t* state) {
|
|
free(state);
|
|
}
|
|
|
|
static result_t cli_compress(method_state_t* state, config_t const* config) {
|
|
if (config->cli_args == NULL)
|
|
return result_error(result_error_skip);
|
|
|
|
if (config->advanced_api_only)
|
|
return result_error(result_error_skip);
|
|
|
|
/* We don't support no pledged source size with directories. Too slow. */
|
|
if (state->data->type == data_type_dir && config->no_pledged_src_size)
|
|
return result_error(result_error_skip);
|
|
|
|
if (g_zstdcli == NULL)
|
|
return result_error(result_error_system_error);
|
|
|
|
/* '<zstd>' -cqr <args> [-D '<dict>'] '<file/dir>' */
|
|
char cmd[1024];
|
|
size_t const cmd_size = snprintf(
|
|
cmd,
|
|
sizeof(cmd),
|
|
"'%s' -cqr %s %s%s%s %s '%s'",
|
|
g_zstdcli,
|
|
config->cli_args,
|
|
config->use_dictionary ? "-D '" : "",
|
|
config->use_dictionary ? state->data->dict.path : "",
|
|
config->use_dictionary ? "'" : "",
|
|
config->no_pledged_src_size ? "<" : "",
|
|
state->data->data.path);
|
|
if (cmd_size >= sizeof(cmd)) {
|
|
fprintf(stderr, "command too large: %s\n", cmd);
|
|
return result_error(result_error_system_error);
|
|
}
|
|
FILE* zstd = popen(cmd, "r");
|
|
if (zstd == NULL) {
|
|
fprintf(stderr, "failed to popen command: %s\n", cmd);
|
|
return result_error(result_error_system_error);
|
|
}
|
|
|
|
char out[4096];
|
|
size_t total_size = 0;
|
|
while (1) {
|
|
size_t const size = fread(out, 1, sizeof(out), zstd);
|
|
total_size += size;
|
|
if (size != sizeof(out))
|
|
break;
|
|
}
|
|
if (ferror(zstd) || pclose(zstd) != 0) {
|
|
fprintf(stderr, "zstd failed with command: %s\n", cmd);
|
|
return result_error(result_error_compression_error);
|
|
}
|
|
|
|
result_data_t const data = {.total_size = total_size};
|
|
return result_data(data);
|
|
}
|
|
|
|
static int advanced_config(
|
|
ZSTD_CCtx* cctx,
|
|
buffer_state_t* state,
|
|
config_t const* config) {
|
|
ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
|
|
for (size_t p = 0; p < config->param_values.size; ++p) {
|
|
param_value_t const pv = config->param_values.data[p];
|
|
if (ZSTD_isError(ZSTD_CCtx_setParameter(cctx, pv.param, pv.value))) {
|
|
return 1;
|
|
}
|
|
}
|
|
if (config->use_dictionary) {
|
|
if (ZSTD_isError(ZSTD_CCtx_loadDictionary(
|
|
cctx, state->dictionary.data, state->dictionary.size))) {
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static result_t advanced_one_pass_compress_output_adjustment(
|
|
method_state_t* base,
|
|
config_t const* config,
|
|
size_t const subtract) {
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
|
|
if (buffer_state_bad(state, config))
|
|
return result_error(result_error_system_error);
|
|
|
|
ZSTD_CCtx* cctx = ZSTD_createCCtx();
|
|
result_t result;
|
|
|
|
if (!cctx || advanced_config(cctx, state, config)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
|
|
result_data_t data = {.total_size = 0};
|
|
for (size_t i = 0; i < state->inputs.size; ++i) {
|
|
data_buffer_t const input = state->inputs.buffers[i];
|
|
|
|
if (!config->no_pledged_src_size) {
|
|
if (ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(cctx, input.size))) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
}
|
|
size_t const size = ZSTD_compress2(
|
|
cctx,
|
|
state->compressed.data,
|
|
ZSTD_compressBound(input.size) - subtract,
|
|
input.data,
|
|
input.size);
|
|
if (ZSTD_isError(size)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
data.total_size += size;
|
|
}
|
|
|
|
result = result_data(data);
|
|
out:
|
|
ZSTD_freeCCtx(cctx);
|
|
return result;
|
|
}
|
|
|
|
static result_t advanced_one_pass_compress(
|
|
method_state_t* base,
|
|
config_t const* config) {
|
|
return advanced_one_pass_compress_output_adjustment(base, config, 0);
|
|
}
|
|
|
|
static result_t advanced_one_pass_compress_small_output(
|
|
method_state_t* base,
|
|
config_t const* config) {
|
|
return advanced_one_pass_compress_output_adjustment(base, config, 1);
|
|
}
|
|
|
|
static result_t advanced_streaming_compress(
|
|
method_state_t* base,
|
|
config_t const* config) {
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
|
|
if (buffer_state_bad(state, config))
|
|
return result_error(result_error_system_error);
|
|
|
|
ZSTD_CCtx* cctx = ZSTD_createCCtx();
|
|
result_t result;
|
|
|
|
if (!cctx || advanced_config(cctx, state, config)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
|
|
result_data_t data = {.total_size = 0};
|
|
for (size_t i = 0; i < state->inputs.size; ++i) {
|
|
data_buffer_t input = state->inputs.buffers[i];
|
|
|
|
if (!config->no_pledged_src_size) {
|
|
if (ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(cctx, input.size))) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
while (input.size > 0) {
|
|
ZSTD_inBuffer in = {input.data, MIN(input.size, 4096)};
|
|
input.data += in.size;
|
|
input.size -= in.size;
|
|
ZSTD_EndDirective const op =
|
|
input.size > 0 ? ZSTD_e_continue : ZSTD_e_end;
|
|
size_t ret = 0;
|
|
while (in.pos < in.size || (op == ZSTD_e_end && ret != 0)) {
|
|
ZSTD_outBuffer out = {state->compressed.data,
|
|
MIN(state->compressed.capacity, 1024)};
|
|
ret = ZSTD_compressStream2(cctx, &out, &in, op);
|
|
if (ZSTD_isError(ret)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
data.total_size += out.pos;
|
|
}
|
|
}
|
|
}
|
|
|
|
result = result_data(data);
|
|
out:
|
|
ZSTD_freeCCtx(cctx);
|
|
return result;
|
|
}
|
|
|
|
static int init_cstream(
|
|
buffer_state_t* state,
|
|
ZSTD_CStream* zcs,
|
|
config_t const* config,
|
|
int const advanced,
|
|
ZSTD_CDict** cdict)
|
|
{
|
|
size_t zret;
|
|
if (advanced) {
|
|
ZSTD_parameters const params = config_get_zstd_params(config, 0, 0);
|
|
ZSTD_CDict* dict = NULL;
|
|
if (cdict) {
|
|
if (!config->use_dictionary)
|
|
return 1;
|
|
*cdict = ZSTD_createCDict_advanced(
|
|
state->dictionary.data,
|
|
state->dictionary.size,
|
|
ZSTD_dlm_byRef,
|
|
ZSTD_dct_auto,
|
|
params.cParams,
|
|
ZSTD_defaultCMem);
|
|
if (!*cdict) {
|
|
return 1;
|
|
}
|
|
zret = ZSTD_initCStream_usingCDict_advanced(
|
|
zcs, *cdict, params.fParams, ZSTD_CONTENTSIZE_UNKNOWN);
|
|
} else {
|
|
zret = ZSTD_initCStream_advanced(
|
|
zcs,
|
|
config->use_dictionary ? state->dictionary.data : NULL,
|
|
config->use_dictionary ? state->dictionary.size : 0,
|
|
params,
|
|
ZSTD_CONTENTSIZE_UNKNOWN);
|
|
}
|
|
} else {
|
|
int const level = config_get_level(config);
|
|
if (level == CONFIG_NO_LEVEL)
|
|
return 1;
|
|
if (cdict) {
|
|
if (!config->use_dictionary)
|
|
return 1;
|
|
*cdict = ZSTD_createCDict(
|
|
state->dictionary.data,
|
|
state->dictionary.size,
|
|
level);
|
|
if (!*cdict) {
|
|
return 1;
|
|
}
|
|
zret = ZSTD_initCStream_usingCDict(zcs, *cdict);
|
|
} else if (config->use_dictionary) {
|
|
zret = ZSTD_initCStream_usingDict(
|
|
zcs,
|
|
state->dictionary.data,
|
|
state->dictionary.size,
|
|
level);
|
|
} else {
|
|
zret = ZSTD_initCStream(zcs, level);
|
|
}
|
|
}
|
|
if (ZSTD_isError(zret)) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static result_t old_streaming_compress_internal(
|
|
method_state_t* base,
|
|
config_t const* config,
|
|
int const advanced,
|
|
int const cdict) {
|
|
buffer_state_t* state = container_of(base, buffer_state_t, base);
|
|
|
|
if (buffer_state_bad(state, config))
|
|
return result_error(result_error_system_error);
|
|
|
|
|
|
ZSTD_CStream* zcs = ZSTD_createCStream();
|
|
ZSTD_CDict* cd = NULL;
|
|
result_t result;
|
|
if (zcs == NULL) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
if (!advanced && config_get_level(config) == CONFIG_NO_LEVEL) {
|
|
result = result_error(result_error_skip);
|
|
goto out;
|
|
}
|
|
if (cdict && !config->use_dictionary) {
|
|
result = result_error(result_error_skip);
|
|
goto out;
|
|
}
|
|
if (config->advanced_api_only) {
|
|
result = result_error(result_error_skip);
|
|
goto out;
|
|
}
|
|
if (init_cstream(state, zcs, config, advanced, cdict ? &cd : NULL)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
|
|
result_data_t data = {.total_size = 0};
|
|
for (size_t i = 0; i < state->inputs.size; ++i) {
|
|
data_buffer_t input = state->inputs.buffers[i];
|
|
size_t zret = ZSTD_resetCStream(
|
|
zcs,
|
|
config->no_pledged_src_size ? ZSTD_CONTENTSIZE_UNKNOWN : input.size);
|
|
if (ZSTD_isError(zret)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
|
|
while (input.size > 0) {
|
|
ZSTD_inBuffer in = {input.data, MIN(input.size, 4096)};
|
|
input.data += in.size;
|
|
input.size -= in.size;
|
|
ZSTD_EndDirective const op =
|
|
input.size > 0 ? ZSTD_e_continue : ZSTD_e_end;
|
|
zret = 0;
|
|
while (in.pos < in.size || (op == ZSTD_e_end && zret != 0)) {
|
|
ZSTD_outBuffer out = {state->compressed.data,
|
|
MIN(state->compressed.capacity, 1024)};
|
|
if (op == ZSTD_e_continue || in.pos < in.size)
|
|
zret = ZSTD_compressStream(zcs, &out, &in);
|
|
else
|
|
zret = ZSTD_endStream(zcs, &out);
|
|
if (ZSTD_isError(zret)) {
|
|
result = result_error(result_error_compression_error);
|
|
goto out;
|
|
}
|
|
data.total_size += out.pos;
|
|
}
|
|
}
|
|
}
|
|
|
|
result = result_data(data);
|
|
out:
|
|
ZSTD_freeCStream(zcs);
|
|
ZSTD_freeCDict(cd);
|
|
return result;
|
|
}
|
|
|
|
static result_t old_streaming_compress(
|
|
method_state_t* base,
|
|
config_t const* config)
|
|
{
|
|
return old_streaming_compress_internal(
|
|
base, config, /* advanced */ 0, /* cdict */ 0);
|
|
}
|
|
|
|
static result_t old_streaming_compress_advanced(
|
|
method_state_t* base,
|
|
config_t const* config)
|
|
{
|
|
return old_streaming_compress_internal(
|
|
base, config, /* advanced */ 1, /* cdict */ 0);
|
|
}
|
|
|
|
static result_t old_streaming_compress_cdict(
|
|
method_state_t* base,
|
|
config_t const* config)
|
|
{
|
|
return old_streaming_compress_internal(
|
|
base, config, /* advanced */ 0, /* cdict */ 1);
|
|
}
|
|
|
|
static result_t old_streaming_compress_cdict_advanced(
|
|
method_state_t* base,
|
|
config_t const* config)
|
|
{
|
|
return old_streaming_compress_internal(
|
|
base, config, /* advanced */ 1, /* cdict */ 1);
|
|
}
|
|
|
|
method_t const simple = {
|
|
.name = "compress simple",
|
|
.create = buffer_state_create,
|
|
.compress = simple_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const compress_cctx = {
|
|
.name = "compress cctx",
|
|
.create = buffer_state_create,
|
|
.compress = compress_cctx_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const advanced_one_pass = {
|
|
.name = "advanced one pass",
|
|
.create = buffer_state_create,
|
|
.compress = advanced_one_pass_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const advanced_one_pass_small_out = {
|
|
.name = "advanced one pass small out",
|
|
.create = buffer_state_create,
|
|
.compress = advanced_one_pass_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const advanced_streaming = {
|
|
.name = "advanced streaming",
|
|
.create = buffer_state_create,
|
|
.compress = advanced_streaming_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const old_streaming = {
|
|
.name = "old streaming",
|
|
.create = buffer_state_create,
|
|
.compress = old_streaming_compress,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const old_streaming_advanced = {
|
|
.name = "old streaming advanced",
|
|
.create = buffer_state_create,
|
|
.compress = old_streaming_compress_advanced,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const old_streaming_cdict = {
|
|
.name = "old streaming cdict",
|
|
.create = buffer_state_create,
|
|
.compress = old_streaming_compress_cdict,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const old_streaming_advanced_cdict = {
|
|
.name = "old streaming advanced cdict",
|
|
.create = buffer_state_create,
|
|
.compress = old_streaming_compress_cdict_advanced,
|
|
.destroy = buffer_state_destroy,
|
|
};
|
|
|
|
method_t const cli = {
|
|
.name = "zstdcli",
|
|
.create = method_state_create,
|
|
.compress = cli_compress,
|
|
.destroy = method_state_destroy,
|
|
};
|
|
|
|
static method_t const* g_methods[] = {
|
|
&simple,
|
|
&compress_cctx,
|
|
&cli,
|
|
&advanced_one_pass,
|
|
&advanced_one_pass_small_out,
|
|
&advanced_streaming,
|
|
&old_streaming,
|
|
&old_streaming_advanced,
|
|
&old_streaming_cdict,
|
|
&old_streaming_advanced_cdict,
|
|
NULL,
|
|
};
|
|
|
|
method_t const* const* methods = g_methods;
|