diff options
Diffstat (limited to 'lib/common/comp_opt.c')
| -rw-r--r-- | lib/common/comp_opt.c | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/lib/common/comp_opt.c b/lib/common/comp_opt.c index c279f1e..8864a0e 100644 --- a/lib/common/comp_opt.c +++ b/lib/common/comp_opt.c @@ -136,6 +136,8 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, num_flags = sizeof(xz_flags) / sizeof(xz_flags[0]); break; case SQFS_COMP_LZMA: + min_level = SQFS_LZMA_MIN_LEVEL; + max_level = SQFS_LZMA_MAX_LEVEL; flags = lzma_flags; num_flags = sizeof(lzma_flags) / sizeof(lzma_flags[0]); break; @@ -200,6 +202,9 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, case SQFS_COMP_XZ: cfg->opt.xz.level = level; break; + case SQFS_COMP_LZMA: + cfg->opt.lzma.level = level; + break; default: goto fail_opt; } @@ -215,13 +220,15 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, goto fail_lzo_alg; break; case OPT_DICT: - if (cfg->id != SQFS_COMP_XZ) + if (cfg->id != SQFS_COMP_XZ && + cfg->id != SQFS_COMP_LZMA) { goto fail_opt; + } if (value == NULL) goto fail_value; - if (parse_size("Parsing XZ dictionary size", + if (parse_size("Parsing LZMA dictionary size", &dict_size, value, cfg->block_size)) { return -1; } @@ -229,8 +236,10 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, cfg->opt.xz.dict_size = dict_size; break; case OPT_LC: - if (cfg->id != SQFS_COMP_XZ) + if (cfg->id != SQFS_COMP_XZ && + cfg->id != SQFS_COMP_LZMA) { goto fail_opt; + } if (value == NULL) goto fail_value; @@ -240,8 +249,10 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, goto fail_lc; break; case OPT_LP: - if (cfg->id != SQFS_COMP_XZ) + if (cfg->id != SQFS_COMP_XZ && + cfg->id != SQFS_COMP_LZMA) { goto fail_opt; + } if (value == NULL) goto fail_value; @@ -251,8 +262,10 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, goto fail_lp; break; case OPT_PB: - if (cfg->id != SQFS_COMP_XZ) + if (cfg->id != SQFS_COMP_XZ && + cfg->id != SQFS_COMP_LZMA) { goto fail_opt; + } if (value == NULL) goto fail_value; @@ -268,8 +281,10 @@ int compressor_cfg_init_options(sqfs_compressor_config_t *cfg, } } - if (cfg->id == SQFS_COMP_XZ && (cfg->opt.xz.lp + cfg->opt.xz.lc) > 4) - goto fail_sum_lp_lc; + if (cfg->id == SQFS_COMP_XZ || cfg->id == SQFS_COMP_LZMA) { + if ((cfg->opt.xz.lp + cfg->opt.xz.lc) > 4) + goto fail_sum_lp_lc; + } return 0; fail_sum_lp_lc: @@ -362,12 +377,12 @@ static void lzo_print_help(void) printf("\t%s\n", lzo_algs[i]); } -static void xz_print_help(void) +static void xz_lzma_print_help(void) { size_t i; printf( -"Available options for xz compressor:\n" +"Available options for LZMA and XZ (LZMA v2) compressors:\n" "\n" " dictsize=<value> Dictionary size. Either a value in bytes or a\n" " percentage of the block size. Defaults to 100%%.\n" @@ -375,7 +390,7 @@ static void xz_print_help(void) " can also be used for kibi and mebi bytes\n" " respecitively.\n" " level=<value> Compression level. Value from %d to %d.\n" -" Defaults to %d.\n" +" For XZ, defaults to %d, for LZMA defaults to %d.\n" " lc=<value> Number of literal context bits.\n" " How many of the highest bits of the previous\n" " uncompressed byte to take into account when\n" @@ -390,16 +405,21 @@ static void xz_print_help(void) " of the input data, i.e. pb=0 means single byte\n" " allignment, pb=1 means 16 bit, 2 means 32 bit.\n" " Default is %d.\n" +" extreme If this flag is set, try to crunch the data extra hard\n" +" without increasing the decompressors memory\n" +" requirements." "\n" "If values are set, the sum of lc + lp must not exceed 4.\n" "The maximum for pb is %d.\n" "\n" -"In additon to the options, one or more bcj filters can be specified.\n" +"In additon to the options, for the XZ compressor, one or more bcj filters\n" +"can be specified.\n" "If multiple filters are provided, the one yielding the best compression\n" "ratio will be used.\n" "\n" "The following filters are available:\n", - SQFS_XZ_MIN_LEVEL, SQFS_XZ_MAX_LEVEL, SQFS_XZ_DEFAULT_LEVEL, + SQFS_XZ_MIN_LEVEL, SQFS_XZ_MAX_LEVEL, + SQFS_XZ_DEFAULT_LEVEL, SQFS_LZMA_DEFAULT_LEVEL, SQFS_XZ_DEFAULT_LC, SQFS_XZ_DEFAULT_LP, SQFS_XZ_DEFAULT_PB, SQFS_XZ_MAX_PB); @@ -419,7 +439,8 @@ static void zstd_print_help(void) static const compressor_help_fun_t helpfuns[SQFS_COMP_MAX + 1] = { [SQFS_COMP_GZIP] = gzip_print_help, - [SQFS_COMP_XZ] = xz_print_help, + [SQFS_COMP_XZ] = xz_lzma_print_help, + [SQFS_COMP_LZMA] = xz_lzma_print_help, [SQFS_COMP_LZO] = lzo_print_help, [SQFS_COMP_LZ4] = lz4_print_help, [SQFS_COMP_ZSTD] = zstd_print_help, |