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Allow negative zstd compression level #726

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Allow negative zstd compression level #726

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63d0843
Allow negative zstd compression level
ahupna Aug 21, 2023
a2983e2
Assign default compression level from zstd.h when creating the stream
ahupna Aug 23, 2023
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8 changes: 3 additions & 5 deletions mz_strm_zstd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ typedef struct mz_stream_zstd_s {
int64_t max_total_in;
int64_t max_total_out;
int8_t initialized;
uint32_t preset;
int32_t preset;
} mz_stream_zstd;

/***************************************************************************/
Expand Down Expand Up @@ -312,10 +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)
zstd->preset = 6;
else
zstd->preset = (int16_t)value;
zstd->preset = (int32_t)value;
return MZ_OK;
case MZ_STREAM_PROP_TOTAL_IN_MAX:
zstd->max_total_in = value;
Expand All @@ -329,6 +326,7 @@ void *mz_stream_zstd_create(void) {
if (zstd) {
zstd->stream.vtbl = &mz_stream_zstd_vtbl;
zstd->max_total_out = -1;
zstd->preset = ZSTD_CLEVEL_DEFAULT;
}
return zstd;
}
Expand Down