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[libzstd] Setting ZSTD_d_maxWindowLog to 0 means default

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This commit is contained in:
Nick Terrell
2019-04-02 19:20:52 -07:00
parent 56682a7709
commit 00679da22b
2 changed files with 3 additions and 1 deletions
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lib/decompress/zstd_decompress.c
+1
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@@ -1372,6 +1372,7 @@ size_t ZSTD_DCtx_setParameter(ZSTD_DCtx* dctx, ZSTD_dParameter dParam, int value
RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong); RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong);
switch(dParam) { switch(dParam) {
case ZSTD_d_windowLogMax: case ZSTD_d_windowLogMax:
if (value == 0) value = ZSTD_WINDOWLOG_LIMIT_DEFAULT;
CHECK_DBOUNDS(ZSTD_d_windowLogMax, value); CHECK_DBOUNDS(ZSTD_d_windowLogMax, value);
dctx->maxWindowSize = ((size_t)1) << value; dctx->maxWindowSize = ((size_t)1) << value;
return 0; return 0;
lib/zstd.h
+2 -1
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@@ -852,7 +852,8 @@ typedef enum {
* the streaming API will refuse to allocate memory buffer * the streaming API will refuse to allocate memory buffer
* in order to protect the host from unreasonable memory requirements. * in order to protect the host from unreasonable memory requirements.
* This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode. * This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode.
* By default, a decompression context accepts window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT) */ * By default, a decompression context accepts window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT).
* Special: value 0 means "use default maximum windowLog". */
/* note : additional experimental parameters are also available /* note : additional experimental parameters are also available
* within the experimental section of the API. * within the experimental section of the API.