Match default compression level value in compress streams #726

zlib-ng · Oct 26, 2023 · 97d8e65 · 97d8e65
1 parent 1e9c6d8
commit 97d8e65
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Showing 4 changed files with 7 additions and 4 deletions.
diff --git a/mz_strm_bzip.c b/mz_strm_bzip.c
@@ -326,7 +326,7 @@ int32_t mz_stream_bzip_set_prop_int64(void *stream, int32_t prop, int64_t value)
     mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
     switch (prop) {
     case MZ_STREAM_PROP_COMPRESS_LEVEL:
-        if (value < 0)
+        if (value == MZ_COMPRESS_LEVEL_DEFAULT)
             bzip->level = 6;
         else
             bzip->level = (int16_t)value;

diff --git a/mz_strm_lzma.c b/mz_strm_lzma.c
@@ -415,7 +415,7 @@ int32_t mz_stream_lzma_set_prop_int64(void *stream, int32_t prop, int64_t value)
     mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
     switch (prop) {
     case MZ_STREAM_PROP_COMPRESS_LEVEL:
-        if (value < 0 || value > 9)
+        if (value == MZ_COMPRESS_LEVEL_DEFAULT)
             lzma->preset = LZMA_PRESET_DEFAULT;
         else
             lzma->preset = (uint32_t)value;

diff --git a/mz_strm_zlib.c b/mz_strm_zlib.c
@@ -347,7 +347,10 @@ int32_t mz_stream_zlib_set_prop_int64(void *stream, int32_t prop, int64_t value)
     mz_stream_zlib *zlib = (mz_stream_zlib *)stream;
     switch (prop) {
     case MZ_STREAM_PROP_COMPRESS_LEVEL:
-        zlib->level = (int16_t)value;
+        if (value == MZ_COMPRESS_LEVEL_DEFAULT)
+            zlib->level = Z_DEFAULT_COMPRESSION;
+        else
+            zlib->level = (int16_t)value;
         break;
     case MZ_STREAM_PROP_TOTAL_IN_MAX:
         zlib->max_total_in = value;

diff --git a/mz_strm_zstd.c b/mz_strm_zstd.c
@@ -312,7 +312,7 @@ int32_t mz_stream_zstd_set_prop_int64(void *stream, int32_t prop, int64_t value)
     mz_stream_zstd *zstd = (mz_stream_zstd *)stream;
     switch (prop) {
     case MZ_STREAM_PROP_COMPRESS_LEVEL:
-        if (value < 0)
+        if (value == MZ_COMPRESS_LEVEL_DEFAULT)
             zstd->preset = ZSTD_CLEVEL_DEFAULT;
         else
             zstd->preset = (int16_t)value;