xz: Create command line options for filters[1-9].
The new command line options are meant to be combined with --block-list. They work as an optional extension to --block-list to specify a custom filter chain for each block listed. The new options allow the creation of up to 9 reusable filter chains. For instance: xz --block-list=1:10MiB,3:5MiB,,2:5MiB,1:0 --filters1=delta--lzma2 \ --filters2=x86--lzma2 --filters3=arm64--lzma2 Will create the following blocks: 1. A block of size 10 MiB with filter chain delta, lzma2. 2. A block of size 5 MiB with filter chain arm64, lzma2. 3. A block of size 5 MiB with filter chain arm64, lzma2. 4. A block of size 5 MiB with filter chain x86, lzma2. 5. A block containing the rest of the file contents with filter chain delta, lzma2.
This commit is contained in:
Jia Tan
parent
072d292501
commit
d6af7f3470
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@ -83,14 +83,14 @@ parse_block_list(const char *str_const)
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++count;
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// Prevent an unlikely integer overflow.
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if (count > SIZE_MAX / sizeof(uint64_t) - 1)
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if (count > SIZE_MAX / sizeof(block_list_entry) - 1)
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message_fatal(_("%s: Too many arguments to --block-list"),
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str);
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// Allocate memory to hold all the sizes specified.
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// If --block-list was specified already, its value is forgotten.
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free(opt_block_list);
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opt_block_list = xmalloc((count + 1) * sizeof(uint64_t));
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opt_block_list = xmalloc((count + 1) * sizeof(block_list_entry));
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for (size_t i = 0; i < count; ++i) {
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// Locate the next comma and replace it with \0.
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@ -98,6 +98,40 @@ parse_block_list(const char *str_const)
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if (p != NULL)
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*p = '\0';
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// Use the default filter chain unless overridden.
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opt_block_list[i].filters_index = 0;
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// To specify a filter chain, the block list entry may be
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// prepended with "[filter-chain-number]:". The size is
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// still required for every block.
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// For instance:
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// --block-list=2:10MiB,1:5MiB,,8MiB,0:0
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//
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// Translates to:
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// 1. Block of 10 MiB using filter chain 2
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// 2. Block of 5 MiB using filter chain 1
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// 3. Block of 5 MiB using filter chain 1
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// 4. Block of 8 MiB using the default filter chain
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// 5. The last block uses the default filter chain
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//
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// The block list:
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// --block-list=2:MiB,1:,0
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//
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// Is not allowed because the second block does not specify
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// the block size, only the filter chain.
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if (str[0] >= '0' && str[0] <= '9' && str[1] == ':') {
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if (str[2] == '\0')
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message_fatal(_("In --block-list, block "
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"size is missing after "
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"filter chain number `%c:'"),
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str[0]);
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int filter_num = str[0] - '0';
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opt_block_list[i].filters_index =
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(uint32_t)filter_num;
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str += 2;
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}
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if (str[0] == '\0') {
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// There is no string, that is, a comma follows
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// another comma. Use the previous value.
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@ -107,17 +141,17 @@ parse_block_list(const char *str_const)
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assert(i > 0);
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opt_block_list[i] = opt_block_list[i - 1];
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} else {
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opt_block_list[i] = str_to_uint64("block-list", str,
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0, UINT64_MAX);
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opt_block_list[i].size = str_to_uint64("block-list",
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str, 0, UINT64_MAX);
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// Zero indicates no more new Blocks.
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if (opt_block_list[i] == 0) {
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if (opt_block_list[i].size == 0) {
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if (i + 1 != count)
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message_fatal(_("0 can only be used "
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"as the last element "
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"in --block-list"));
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opt_block_list[i] = UINT64_MAX;
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opt_block_list[i].size = UINT64_MAX;
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}
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}
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@ -125,7 +159,7 @@ parse_block_list(const char *str_const)
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}
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// Terminate the array.
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opt_block_list[count] = 0;
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opt_block_list[count].size = 0;
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free(str_start);
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return;
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@ -137,6 +171,16 @@ parse_real(args_info *args, int argc, char **argv)
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{
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enum {
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OPT_FILTERS = INT_MIN,
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OPT_FILTERS1,
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OPT_FILTERS2,
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OPT_FILTERS3,
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OPT_FILTERS4,
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OPT_FILTERS5,
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OPT_FILTERS6,
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OPT_FILTERS7,
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OPT_FILTERS8,
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OPT_FILTERS9,
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OPT_X86,
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OPT_POWERPC,
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OPT_IA64,
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@ -208,6 +252,16 @@ parse_real(args_info *args, int argc, char **argv)
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// Filters
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{ "filters", optional_argument, NULL, OPT_FILTERS},
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{ "filters1", optional_argument, NULL, OPT_FILTERS1},
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{ "filters2", optional_argument, NULL, OPT_FILTERS2},
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{ "filters3", optional_argument, NULL, OPT_FILTERS3},
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{ "filters4", optional_argument, NULL, OPT_FILTERS4},
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{ "filters5", optional_argument, NULL, OPT_FILTERS5},
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{ "filters6", optional_argument, NULL, OPT_FILTERS6},
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{ "filters7", optional_argument, NULL, OPT_FILTERS7},
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{ "filters8", optional_argument, NULL, OPT_FILTERS8},
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{ "filters9", optional_argument, NULL, OPT_FILTERS9},
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{ "lzma1", optional_argument, NULL, OPT_LZMA1 },
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{ "lzma2", optional_argument, NULL, OPT_LZMA2 },
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{ "x86", optional_argument, NULL, OPT_X86 },
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@ -379,6 +433,20 @@ parse_real(args_info *args, int argc, char **argv)
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coder_add_filters_from_str(optarg);
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break;
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// --filters1...--filters9
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case OPT_FILTERS1:
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case OPT_FILTERS2:
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case OPT_FILTERS3:
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case OPT_FILTERS4:
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case OPT_FILTERS5:
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case OPT_FILTERS6:
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case OPT_FILTERS7:
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case OPT_FILTERS8:
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case OPT_FILTERS9:
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coder_add_block_filters(optarg,
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(size_t)(c - OPT_FILTERS));
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break;
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case OPT_X86:
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coder_add_filter(LZMA_FILTER_X86,
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options_bcj(optarg));
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188
src/xz/coder.c
188
src/xz/coder.c
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@ -26,28 +26,40 @@ enum format_type opt_format = FORMAT_AUTO;
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bool opt_auto_adjust = true;
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bool opt_single_stream = false;
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uint64_t opt_block_size = 0;
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uint64_t *opt_block_list = NULL;
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block_list_entry *opt_block_list = NULL;
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/// Stream used to communicate with liblzma
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static lzma_stream strm = LZMA_STREAM_INIT;
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/// Filters needed for all encoding all formats, and also decoding in raw data
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static lzma_filter filters[LZMA_FILTERS_MAX + 1];
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/// Maximum number of filter chains. The first filter chain is the default,
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/// and 9 other filter chains can be specified with --filtersX.
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#define NUM_FILTER_CHAIN_MAX 10
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/// The default filter chain is in filters[0]. It is used for encoding
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/// in all supported formats and also for decdoing raw streams. The other
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/// filter chains are set by --filtersX to support changing filters with
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/// the --block-list option.
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static lzma_filter filters[NUM_FILTER_CHAIN_MAX][LZMA_FILTERS_MAX + 1];
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/// Bit mask representing the filters specified through --filtersX. This
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/// is needed to verify that an entry in the --block-list option does not
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/// try to reference a filter chain that was not initialized.
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static uint32_t filters_init_mask = 1;
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/// Input and output buffers
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static io_buf in_buf;
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static io_buf out_buf;
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/// Number of filters. Zero indicates that we are using a preset.
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/// Number of filters in the default filter chain. Zero indicates that
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/// we are using a preset.
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static uint32_t filters_count = 0;
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/// Number of the preset (0-9)
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static uint32_t preset_number = LZMA_PRESET_DEFAULT;
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/// True if the current filter chain was set using the --filters option.
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/// The filter chain is reset if a preset option (like -9) or an old-style
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/// filter option (like --lzma2) is used after a --filters option.
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/// True if the current default filter chain was set using the --filters
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/// option. The filter chain is reset if a preset option (like -9) or an
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/// old-style filter option (like --lzma2) is used after a --filters option.
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static bool string_to_filter_used = false;
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/// Integrity check type
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@ -65,7 +77,6 @@ static bool allow_trailing_input;
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static lzma_mt mt_options = {
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.flags = 0,
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.timeout = 300,
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.filters = filters,
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};
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#endif
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@ -85,7 +96,7 @@ forget_filter_chain(void)
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// Setting a preset or using --filters makes us forget
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// the earlier custom filter chain (if any).
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if (filters_count > 0) {
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lzma_filters_free(filters, NULL);
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lzma_filters_free(filters[0], NULL);
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filters_count = 0;
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}
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@ -122,11 +133,11 @@ coder_add_filter(lzma_vli id, void *options)
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if (string_to_filter_used)
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forget_filter_chain();
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filters[filters_count].id = id;
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filters[filters_count].options = options;
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filters[0][filters_count].id = id;
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filters[0][filters_count].options = options;
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// Terminate the filter chain with LZMA_VLI_UNKNOWN to simplify
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// implementation of forget_filter_chain().
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filters[++filters_count].id = LZMA_VLI_UNKNOWN;
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filters[0][++filters_count].id = LZMA_VLI_UNKNOWN;
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// Setting a custom filter chain makes us forget the preset options.
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// This makes a difference if one specifies e.g. "xz -9 --lzma2 -e"
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@ -139,19 +150,24 @@ coder_add_filter(lzma_vli id, void *options)
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static void
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str_to_filter(const char *str, lzma_filter *filter, uint32_t flags)
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str_to_filters(const char *str, uint32_t index, uint32_t flags)
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{
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int error_pos;
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const char *err = lzma_str_to_filters(str, &error_pos, filter,
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flags, NULL);
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const char *err = lzma_str_to_filters(str, &error_pos,
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filters[index], flags, NULL);
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if (err != NULL) {
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char filter_num[2] = "";
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if (index > 0)
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filter_num[0] = '0' + index;
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// FIXME? The message in err isn't translated.
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// Including the translations in the xz translations is
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// slightly ugly but possible. Creating a new domain for
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// liblzma might not be worth it especially since on some
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// OSes it adds extra dependencies to translation libraries.
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message(V_ERROR, _("Error in --filters=FILTERS option:"));
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message(V_ERROR, _("Error in --filters%s=FILTERS option:"),
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filter_num);
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message(V_ERROR, "%s", str);
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message(V_ERROR, "%*s^", error_pos, "");
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message_fatal("%s", err);
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@ -170,11 +186,12 @@ coder_add_filters_from_str(const char *filter_str)
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string_to_filter_used = true;
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// Include LZMA_STR_ALL_FILTERS so this can be used with --format=raw.
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str_to_filter(filter_str, filters, LZMA_STR_ALL_FILTERS);
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str_to_filters(filter_str, 0, LZMA_STR_ALL_FILTERS);
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// Set the filters_count to be the number of filters converted from
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// the string.
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for (filters_count = 0; filters[filters_count].id != LZMA_VLI_UNKNOWN;
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for (filters_count = 0; filters[0][filters_count].id
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!= LZMA_VLI_UNKNOWN;
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++filters_count) ;
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assert(filters_count > 0);
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@ -182,6 +199,19 @@ coder_add_filters_from_str(const char *filter_str)
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}
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extern void
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coder_add_block_filters(const char *str, size_t slot)
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{
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// Free old filters first, if they were previously allocated.
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if (filters_init_mask & (1 << slot))
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lzma_filters_free(filters[slot], NULL);
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str_to_filters(str, slot, 0);
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filters_init_mask |= 1 << slot;
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}
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static void lzma_attribute((__noreturn__))
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memlimit_too_small(uint64_t memory_usage)
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{
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@ -192,6 +222,17 @@ memlimit_too_small(uint64_t memory_usage)
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}
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// For a given opt_block_list index, validate that the filter has been
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// set. If it has not been set, we must exit with error to avoid using
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// an uninitialized filter chain.
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static void
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validate_block_list_filter(const uint32_t filter_num)
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{
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if (!(filters_init_mask & (1 << filter_num)))
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message_fatal(_("filter chain %u used by --block-list, but "
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"not specified with --filters%u="),
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(unsigned)filter_num, (unsigned)filter_num);
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}
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extern void
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coder_set_compression_settings(void)
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{
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@ -200,6 +241,11 @@ coder_set_compression_settings(void)
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assert(opt_format != FORMAT_LZIP);
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#endif
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if (opt_block_list != NULL)
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for (uint32_t i = 0; opt_block_list[i].size != 0; i++)
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validate_block_list_filter(
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opt_block_list[i].filters_index);
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// The default check type is CRC64, but fallback to CRC32
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// if CRC64 isn't supported by the copy of liblzma we are
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// using. CRC32 is always supported.
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@ -212,6 +258,10 @@ coder_set_compression_settings(void)
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// Options for LZMA1 or LZMA2 in case we are using a preset.
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static lzma_options_lzma opt_lzma;
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// The first filter in the filters[] array is for the default
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// filter chain.
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lzma_filter *default_filters = filters[0];
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if (filters_count == 0) {
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// We are using a preset. This is not a good idea in raw mode
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// except when playing around with things. Different versions
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@ -232,20 +282,20 @@ coder_set_compression_settings(void)
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message_bug();
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// Use LZMA2 except with --format=lzma we use LZMA1.
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filters[0].id = opt_format == FORMAT_LZMA
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default_filters[0].id = opt_format == FORMAT_LZMA
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? LZMA_FILTER_LZMA1 : LZMA_FILTER_LZMA2;
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filters[0].options = &opt_lzma;
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default_filters[0].options = &opt_lzma;
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filters_count = 1;
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// Terminate the filter options array.
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filters[1].id = LZMA_VLI_UNKNOWN;
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default_filters[1].id = LZMA_VLI_UNKNOWN;
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}
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// If we are using the .lzma format, allow exactly one filter
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// which has to be LZMA1.
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if (opt_format == FORMAT_LZMA && (filters_count != 1
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|| filters[0].id != LZMA_FILTER_LZMA1))
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|| default_filters[0].id != LZMA_FILTER_LZMA1))
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message_fatal(_("The .lzma format supports only "
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"the LZMA1 filter"));
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@ -253,19 +303,19 @@ coder_set_compression_settings(void)
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// filter to prevent LZMA_PROG_ERROR.
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if (opt_format == FORMAT_XZ)
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for (size_t i = 0; i < filters_count; ++i)
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if (filters[i].id == LZMA_FILTER_LZMA1)
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if (default_filters[i].id == LZMA_FILTER_LZMA1)
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message_fatal(_("LZMA1 cannot be used "
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"with the .xz format"));
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// Print the selected filter chain.
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message_filters_show(V_DEBUG, filters);
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// Print the selected default filter chain.
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message_filters_show(V_DEBUG, default_filters);
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// The --flush-timeout option requires LZMA_SYNC_FLUSH support
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// from the filter chain. Currently threaded encoder doesn't support
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// LZMA_SYNC_FLUSH so single-threaded mode must be used.
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// from the filter chain. Currently the threaded encoder doesn't
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// support LZMA_SYNC_FLUSH so single-threaded mode must be used.
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if (opt_mode == MODE_COMPRESS && opt_flush_timeout != 0) {
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for (size_t i = 0; i < filters_count; ++i) {
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switch (filters[i].id) {
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switch (default_filters[i].id) {
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case LZMA_FILTER_LZMA2:
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case LZMA_FILTER_DELTA:
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break;
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@ -307,12 +357,12 @@ coder_set_compression_settings(void)
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} else
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# endif
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{
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memory_usage = lzma_raw_encoder_memusage(filters);
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memory_usage = lzma_raw_encoder_memusage(default_filters);
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}
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#endif
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} else {
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#ifdef HAVE_DECODERS
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memory_usage = lzma_raw_decoder_memusage(filters);
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memory_usage = lzma_raw_decoder_memusage(default_filters);
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#endif
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}
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@ -327,7 +377,7 @@ coder_set_compression_settings(void)
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message_mem_needed(V_DEBUG, memory_usage);
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#ifdef HAVE_DECODERS
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if (opt_mode == MODE_COMPRESS) {
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const uint64_t decmem = lzma_raw_decoder_memusage(filters);
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const uint64_t decmem = lzma_raw_decoder_memusage(default_filters);
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if (decmem != UINT64_MAX)
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message(V_DEBUG, _("Decompression will need "
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"%s MiB of memory."), uint64_to_str(
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|
@ -407,7 +457,7 @@ coder_set_compression_settings(void)
|
|||
// the multithreaded mode but the output
|
||||
// is also different.
|
||||
hardware_threads_set(1);
|
||||
memory_usage = lzma_raw_encoder_memusage(filters);
|
||||
memory_usage = lzma_raw_encoder_memusage(default_filters);
|
||||
message(V_WARNING, _("Switching to single-threaded mode "
|
||||
"to not exceed the memory usage limit of %s MiB"),
|
||||
uint64_to_str(round_up_to_mib(memory_limit), 0));
|
||||
|
|
@ -425,9 +475,9 @@ coder_set_compression_settings(void)
|
|||
// Look for the last filter if it is LZMA2 or LZMA1, so we can make
|
||||
// it use less RAM. With other filters we don't know what to do.
|
||||
size_t i = 0;
|
||||
while (filters[i].id != LZMA_FILTER_LZMA2
|
||||
&& filters[i].id != LZMA_FILTER_LZMA1) {
|
||||
if (filters[i].id == LZMA_VLI_UNKNOWN)
|
||||
while (default_filters[i].id != LZMA_FILTER_LZMA2
|
||||
&& default_filters[i].id != LZMA_FILTER_LZMA1) {
|
||||
if (default_filters[i].id == LZMA_VLI_UNKNOWN)
|
||||
memlimit_too_small(memory_usage);
|
||||
|
||||
++i;
|
||||
|
|
@ -435,7 +485,7 @@ coder_set_compression_settings(void)
|
|||
|
||||
// Decrease the dictionary size until we meet the memory
|
||||
// usage limit. First round down to full mebibytes.
|
||||
lzma_options_lzma *opt = filters[i].options;
|
||||
lzma_options_lzma *opt = default_filters[i].options;
|
||||
const uint32_t orig_dict_size = opt->dict_size;
|
||||
opt->dict_size &= ~((UINT32_C(1) << 20) - 1);
|
||||
while (true) {
|
||||
|
|
@ -448,7 +498,7 @@ coder_set_compression_settings(void)
|
|||
if (opt->dict_size < (UINT32_C(1) << 20))
|
||||
memlimit_too_small(memory_usage);
|
||||
|
||||
memory_usage = lzma_raw_encoder_memusage(filters);
|
||||
memory_usage = lzma_raw_encoder_memusage(default_filters);
|
||||
if (memory_usage == UINT64_MAX)
|
||||
message_bug();
|
||||
|
||||
|
|
@ -466,7 +516,7 @@ coder_set_compression_settings(void)
|
|||
message(V_WARNING, _("Adjusted LZMA%c dictionary size "
|
||||
"from %s MiB to %s MiB to not exceed "
|
||||
"the memory usage limit of %s MiB"),
|
||||
filters[i].id == LZMA_FILTER_LZMA2
|
||||
default_filters[i].id == LZMA_FILTER_LZMA2
|
||||
? '2' : '1',
|
||||
uint64_to_str(orig_dict_size >> 20, 0),
|
||||
uint64_to_str(opt->dict_size >> 20, 1),
|
||||
|
|
@ -566,6 +616,13 @@ coder_init(file_pair *pair)
|
|||
// These will be handled later in this function.
|
||||
allow_trailing_input = false;
|
||||
|
||||
// Set the first filter chain. If the --block-list option is not
|
||||
// used then use the default filter chain (filters[0]).
|
||||
// Otherwise, use first filter chain from the block list.
|
||||
lzma_filter *active_filters = opt_block_list == NULL
|
||||
? filters[0]
|
||||
: filters[opt_block_list[0].filters_index];
|
||||
|
||||
if (opt_mode == MODE_COMPRESS) {
|
||||
#ifdef HAVE_ENCODERS
|
||||
switch (opt_format) {
|
||||
|
|
@ -576,17 +633,19 @@ coder_init(file_pair *pair)
|
|||
|
||||
case FORMAT_XZ:
|
||||
# ifdef MYTHREAD_ENABLED
|
||||
mt_options.filters = active_filters;
|
||||
if (hardware_threads_is_mt())
|
||||
ret = lzma_stream_encoder_mt(
|
||||
&strm, &mt_options);
|
||||
else
|
||||
# endif
|
||||
ret = lzma_stream_encoder(
|
||||
&strm, filters, check);
|
||||
&strm, active_filters, check);
|
||||
break;
|
||||
|
||||
case FORMAT_LZMA:
|
||||
ret = lzma_alone_encoder(&strm, filters[0].options);
|
||||
ret = lzma_alone_encoder(&strm,
|
||||
active_filters[0].options);
|
||||
break;
|
||||
|
||||
# ifdef HAVE_LZIP_DECODER
|
||||
|
|
@ -598,7 +657,7 @@ coder_init(file_pair *pair)
|
|||
# endif
|
||||
|
||||
case FORMAT_RAW:
|
||||
ret = lzma_raw_encoder(&strm, filters);
|
||||
ret = lzma_raw_encoder(&strm, active_filters);
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -722,7 +781,7 @@ coder_init(file_pair *pair)
|
|||
case FORMAT_RAW:
|
||||
// Memory usage has already been checked in
|
||||
// coder_set_compression_settings().
|
||||
ret = lzma_raw_decoder(&strm, filters);
|
||||
ret = lzma_raw_decoder(&strm, active_filters);
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -800,12 +859,39 @@ split_block(uint64_t *block_remaining,
|
|||
|
||||
} else {
|
||||
// The Block at *list_pos has been finished. Go to the next
|
||||
// entry in the list. If the end of the list has been reached,
|
||||
// reuse the size of the last Block.
|
||||
if (opt_block_list[*list_pos + 1] != 0)
|
||||
// entry in the list. If the end of the list has been
|
||||
// reached, reuse the size and filters of the last Block.
|
||||
if (opt_block_list[*list_pos + 1].size != 0) {
|
||||
++*list_pos;
|
||||
|
||||
*block_remaining = opt_block_list[*list_pos];
|
||||
// Update the filters if needed.
|
||||
if (opt_block_list[*list_pos - 1].filters_index
|
||||
!= opt_block_list[*list_pos].filters_index) {
|
||||
const uint32_t filter_idx = opt_block_list
|
||||
[*list_pos].filters_index;
|
||||
const lzma_filter *next = filters[filter_idx];
|
||||
const lzma_ret ret = lzma_filters_update(
|
||||
&strm, next);
|
||||
|
||||
if (ret != LZMA_OK) {
|
||||
// This message is only possible if
|
||||
// the filter chain has unsupported
|
||||
// options since the filter chain is
|
||||
// validated using
|
||||
// lzma_raw_encoder_memusage() or
|
||||
// lzma_stream_encoder_mt_memusage().
|
||||
// Some options are not validated until
|
||||
// the encoders are initialized.
|
||||
message_fatal(
|
||||
_("Error changing to "
|
||||
"filter chain %u: %s"),
|
||||
(unsigned)filter_idx,
|
||||
message_strm(ret));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
*block_remaining = opt_block_list[*list_pos].size;
|
||||
|
||||
// If in single-threaded mode, split up the Block if needed.
|
||||
// This is not needed in multi-threaded mode because liblzma
|
||||
|
|
@ -883,12 +969,14 @@ coder_normal(file_pair *pair)
|
|||
// output is still not identical because in single-threaded
|
||||
// mode the size info isn't written into Block Headers.
|
||||
if (opt_block_list != NULL) {
|
||||
if (block_remaining < opt_block_list[list_pos]) {
|
||||
if (block_remaining < opt_block_list[list_pos].size) {
|
||||
assert(!hardware_threads_is_mt());
|
||||
next_block_remaining = opt_block_list[list_pos]
|
||||
next_block_remaining =
|
||||
opt_block_list[list_pos].size
|
||||
- block_remaining;
|
||||
} else {
|
||||
block_remaining = opt_block_list[list_pos];
|
||||
block_remaining =
|
||||
opt_block_list[list_pos].size;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -30,6 +30,18 @@ enum format_type {
|
|||
};
|
||||
|
||||
|
||||
/// Simple struct to track Block metadata specified through the
|
||||
/// --block-list option.
|
||||
typedef struct {
|
||||
/// Uncompressed size of the Block
|
||||
uint64_t size;
|
||||
|
||||
/// Index into the filters[] representing the filter chain to use
|
||||
/// for this Block.
|
||||
uint32_t filters_index;
|
||||
} block_list_entry;
|
||||
|
||||
|
||||
/// Operation mode of the command line tool. This is set in args.c and read
|
||||
/// in several files.
|
||||
extern enum operation_mode opt_mode;
|
||||
|
|
@ -50,9 +62,8 @@ extern bool opt_single_stream;
|
|||
/// of input. This has an effect only when compressing to the .xz format.
|
||||
extern uint64_t opt_block_size;
|
||||
|
||||
/// This is non-NULL if --block-list was used. This contains the Block sizes
|
||||
/// as an array that is terminated with 0.
|
||||
extern uint64_t *opt_block_list;
|
||||
/// List of block size and filter chain pointer pairs.
|
||||
extern block_list_entry *opt_block_list;
|
||||
|
||||
/// Set the integrity check type used when compressing
|
||||
extern void coder_set_check(lzma_check check);
|
||||
|
|
@ -80,3 +91,6 @@ extern void coder_free(void);
|
|||
|
||||
/// Create filter chain from string
|
||||
extern void coder_add_filters_from_str(const char *filter_str);
|
||||
|
||||
/// Add or overwrite a filter that can be used by the block-list.
|
||||
extern void coder_add_block_filters(const char *str, size_t slot);
|
||||
|
|
|
|||
Loading…
Reference in New Issue