--- /dev/null
+/*
+ * 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;
notaz.gp2x.de / pcsx_rearmed.git / blobdiff