diff options
Diffstat (limited to 'lib/sqfs/comp/lz4.c')
| -rw-r--r-- | lib/sqfs/comp/lz4.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/sqfs/comp/lz4.c b/lib/sqfs/comp/lz4.c index 7656d67..f298c67 100644 --- a/lib/sqfs/comp/lz4.c +++ b/lib/sqfs/comp/lz4.c @@ -18,6 +18,7 @@ typedef struct { sqfs_compressor_t base; + size_t block_size; bool high_compression; } lz4_compressor_t; @@ -99,6 +100,22 @@ static sqfs_s32 lz4_uncomp_block(sqfs_compressor_t *base, const sqfs_u8 *in, return ret; } +static void lz4_get_configuration(const sqfs_compressor_t *base, + sqfs_compressor_config_t *cfg) +{ + const lz4_compressor_t *lz4 = (const lz4_compressor_t *)base; + + memset(cfg, 0, sizeof(*cfg)); + cfg->id = SQFS_COMP_LZ4; + cfg->block_size = lz4->block_size; + + if (lz4->high_compression) + cfg->flags |= SQFS_COMP_FLAG_LZ4_HC; + + if (base->do_block == lz4_uncomp_block) + cfg->flags |= SQFS_COMP_FLAG_UNCOMPRESS; +} + static sqfs_compressor_t *lz4_create_copy(sqfs_compressor_t *cmp) { lz4_compressor_t *lz4 = malloc(sizeof(*lz4)); @@ -131,7 +148,9 @@ sqfs_compressor_t *lz4_compressor_create(const sqfs_compressor_config_t *cfg) return NULL; lz4->high_compression = (cfg->flags & SQFS_COMP_FLAG_LZ4_HC) != 0; + lz4->block_size = cfg->block_size; + base->get_configuration = lz4_get_configuration; base->do_block = (cfg->flags & SQFS_COMP_FLAG_UNCOMPRESS) ? lz4_uncomp_block : lz4_comp_block; base->write_options = lz4_write_options; |