lzx_compress.c: adjust parameters for slightly stronger compression

diff --git a/src/lzx_compress.c b/src/lzx_compress.c
index f0edddd33aab3d706826b8db4f85fa7d07918133..47d8bf0be9714e7fe1a9a1f846d6f1cf9f92cff7 100644 (file)
--- a/src/lzx_compress.c
+++ b/src/lzx_compress.c
@@ -2257,8 +2257,8 @@ lzx_create_compressor(size_t max_bufsize, unsigned compression_level,
                        c->impl = lzx_compress_lazy_16;
                else
                        c->impl = lzx_compress_lazy_32;
                        c->impl = lzx_compress_lazy_16;
                else
                        c->impl = lzx_compress_lazy_32;

-               c->max_search_depth = (36 * compression_level) / 20;
-               c->nice_match_length = (72 * compression_level) / 20;
+               c->max_search_depth = (60 * compression_level) / 20;
+               c->nice_match_length = (80 * compression_level) / 20;

 
                /* lzx_compress_lazy() needs max_search_depth >= 2 because it
                 * halves the max_search_depth when attempting a lazy match, and
 
                /* lzx_compress_lazy() needs max_search_depth >= 2 because it
                 * halves the max_search_depth when attempting a lazy match, and


@@ -2277,7 +2277,7 @@ lzx_create_compressor(size_t max_bufsize, unsigned compression_level,
                /* Scale nice_match_length and max_search_depth with the
                 * compression level.  */
                c->max_search_depth = (24 * compression_level) / 50;
                /* Scale nice_match_length and max_search_depth with the
                 * compression level.  */
                c->max_search_depth = (24 * compression_level) / 50;

-               c->nice_match_length = (32 * compression_level) / 50;
+               c->nice_match_length = (48 * compression_level) / 50;

 
                /* Set a number of optimization passes appropriate for the
                 * compression level.  */
 
                /* Set a number of optimization passes appropriate for the
                 * compression level.  */