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zlibWrapper\README.md: Reusing contexts

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inikep
2016-09-23 18:59:53 +02:00
parent e82c811946
commit 2bb83e8271
3 changed files with 43 additions and 13 deletions
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8
zlibWrapper/zstd_zlibwrapper.c
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@ -127,6 +127,7 @@ ZWRAP_CCtx* ZWRAP_createCCtx(z_streamp strm)
int ZWRAP_initializeCStream(ZWRAP_CCtx* zwc, unsigned long long pledgedSrcSize)
{
LOG_WRAPPERC("- ZWRAP_initializeCStream=%p\n", zwc);
if (zwc == NULL) return Z_STREAM_ERROR;
if (zwc->zbc == NULL) {
@ -136,7 +137,7 @@ int ZWRAP_initializeCStream(ZWRAP_CCtx* zwc, unsigned long long pledgedSrcSize)
if (!pledgedSrcSize) pledgedSrcSize = zwc->pledgedSrcSize;
{ ZSTD_parameters const params = ZSTD_getParams(zwc->compressionLevel, pledgedSrcSize, 0);
size_t errorCode;
LOG_WRAPPERC("windowLog=%d chainLog=%d hashLog=%d searchLog=%d searchLength=%d strategy=%d\n", params.cParams.windowLog, params.cParams.chainLog, params.cParams.hashLog, params.cParams.searchLog, params.cParams.searchLength, params.cParams.strategy);
LOG_WRAPPERC("pledgedSrcSize=%d windowLog=%d chainLog=%d hashLog=%d searchLog=%d searchLength=%d strategy=%d\n", (int)pledgedSrcSize, params.cParams.windowLog, params.cParams.chainLog, params.cParams.hashLog, params.cParams.searchLog, params.cParams.searchLength, params.cParams.strategy);
errorCode = ZSTD_initCStream_advanced(zwc->zbc, NULL, 0, params, pledgedSrcSize);
if (ZSTD_isError(errorCode)) return Z_STREAM_ERROR; }
}
@ -219,6 +220,7 @@ ZEXTERN int ZEXPORT z_deflateReset OF((z_streamp strm))
strm->total_in = 0;
strm->total_out = 0;
strm->adler = 0;
return Z_OK;
}
@ -260,7 +262,7 @@ ZEXTERN int ZEXPORT z_deflate OF((z_streamp strm, int flush))
}
zwc = (ZWRAP_CCtx*) strm->state;
if (zwc == NULL) return Z_STREAM_ERROR;
if (zwc == NULL) { LOG_WRAPPERC("zwc == NULL\n"); return Z_STREAM_ERROR; }
if (zwc->zbc == NULL) {
int res = ZWRAP_initializeCStream(zwc, (flush == Z_FINISH) ? strm->avail_in : 0);
@ -268,7 +270,7 @@ ZEXTERN int ZEXPORT z_deflate OF((z_streamp strm, int flush))
} else {
if (strm->total_in == 0) {
size_t const errorCode = ZSTD_resetCStream(zwc->zbc, (flush == Z_FINISH) ? strm->avail_in : zwc->pledgedSrcSize);
if (ZSTD_isError(errorCode)) return ZWRAPC_finishWithError(zwc, strm, 0);
if (ZSTD_isError(errorCode)) { LOG_WRAPPERC("ERROR: ZSTD_resetCStream errorCode=%s\n", ZSTD_getErrorName(errorCode)); return ZWRAPC_finishWithError(zwc, strm, 0); }
}
}