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zstreamtest.c
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zstreamtest.c
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/*-************************************
* Compiler specific
**************************************/
#ifdef _MSC_VER /* Visual Studio */
# define _CRT_SECURE_NO_WARNINGS /* fgets */
# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
# pragma warning(disable : 4146) /* disable: C4146: minus unsigned expression */
#endif
/*-************************************
* Includes
**************************************/
#include <stdlib.h> /* free */
#include <stdio.h> /* fgets, sscanf */
#include <string.h> /* strcmp */
#include <time.h> /* time_t, time(), to randomize seed */
#include <assert.h> /* assert */
#include "timefn.h" /* UTIL_time_t, UTIL_getTime */
#include "mem.h"
#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still test some deprecated functions */
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem, ZSTD_getDictID_fromFrame */
#include "zstd.h" /* ZSTD_compressBound */
#include "zstd_errors.h" /* ZSTD_error_srcSize_wrong */
#include "zdict.h" /* ZDICT_trainFromBuffer */
#include "datagen.h" /* RDG_genBuffer */
#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
#include "xxhash.h" /* XXH64_* */
#include "seqgen.h"
#include "util.h"
#include "timefn.h" /* UTIL_time_t, UTIL_clockSpanMicro, UTIL_getTime */
#include "external_matchfinder.h" /* zstreamSequenceProducer, EMF_testCase */
/*-************************************
* Constants
**************************************/
#define KB *(1U<<10)
#define MB *(1U<<20)
#define GB *(1U<<30)
static const int nbTestsDefault = 10000;
static const U32 g_cLevelMax_smallTests = 10;
#define COMPRESSIBLE_NOISE_LENGTH (10 MB)
#define FUZ_COMPRESSIBILITY_DEFAULT 50
static const U32 prime32 = 2654435761U;
/*-************************************
* Display Macros
**************************************/
#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { \
DISPLAY(__VA_ARGS__); \
if (g_displayLevel>=4) fflush(stderr); }
static U32 g_displayLevel = 2;
static const U64 g_refreshRate = SEC_TO_MICRO / 6;
static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
if ((UTIL_clockSpanMicro(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
{ g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \
if (g_displayLevel>=4) fflush(stderr); } }
static U64 g_clockTime = 0;
/*-*******************************************************
* Check macros
*********************************************************/
#undef MIN
#undef MAX
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
/*! FUZ_rand() :
@return : a 27 bits random value, from a 32-bits `seed`.
`seed` is also modified */
#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
static U32 FUZ_rand(U32* seedPtr)
{
static const U32 prime2 = 2246822519U;
U32 rand32 = *seedPtr;
rand32 *= prime32;
rand32 += prime2;
rand32 = FUZ_rotl32(rand32, 13);
*seedPtr = rand32;
return rand32 >> 5;
}
#define CHECK(cond, ...) { \
if (cond) { \
DISPLAY("Error => "); \
DISPLAY(__VA_ARGS__); \
DISPLAY(" (seed %u, test nb %u, line %u) \n", \
(unsigned)seed, testNb, __LINE__); \
goto _output_error; \
} }
#define CHECK_Z(f) { \
size_t const err = f; \
CHECK(ZSTD_isError(err), "%s : %s ", \
#f, ZSTD_getErrorName(err)); \
}
#define CHECK_RET(ret, cond, ...) { \
if (cond) { \
DISPLAY("Error %llu => ", (unsigned long long)ret); \
DISPLAY(__VA_ARGS__); \
DISPLAY(" (line %u)\n", __LINE__); \
return ret; \
} }
#define CHECK_RET_Z(f) { \
size_t const err = f; \
CHECK_RET(err, ZSTD_isError(err), "%s : %s ", \
#f, ZSTD_getErrorName(err)); \
}
/*======================================================
* Basic Unit tests
*======================================================*/
typedef struct {
void* start;
size_t size;
size_t filled;
} buffer_t;
static const buffer_t kBuffNull = { NULL, 0 , 0 };
static void FUZ_freeDictionary(buffer_t dict)
{
free(dict.start);
}
static buffer_t FUZ_createDictionary(const void* src, size_t srcSize, size_t blockSize, size_t requestedDictSize)
{
buffer_t dict = kBuffNull;
size_t const nbBlocks = (srcSize + (blockSize-1)) / blockSize;
size_t* const blockSizes = (size_t*)malloc(nbBlocks * sizeof(size_t));
if (!blockSizes) return kBuffNull;
dict.start = malloc(requestedDictSize);
if (!dict.start) { free(blockSizes); return kBuffNull; }
{ size_t nb;
for (nb=0; nb<nbBlocks-1; nb++) blockSizes[nb] = blockSize;
blockSizes[nbBlocks-1] = srcSize - (blockSize * (nbBlocks-1));
}
{ size_t const dictSize = ZDICT_trainFromBuffer(dict.start, requestedDictSize, src, blockSizes, (unsigned)nbBlocks);
free(blockSizes);
if (ZDICT_isError(dictSize)) { FUZ_freeDictionary(dict); return kBuffNull; }
dict.size = requestedDictSize;
dict.filled = dictSize;
return dict;
}
}
/* Round trips data and updates xxh with the decompressed data produced */
static size_t SEQ_roundTrip(ZSTD_CCtx* cctx, ZSTD_DCtx* dctx,
XXH64_state_t* xxh, void* data, size_t size,
ZSTD_EndDirective endOp)
{
static BYTE compressed[1024];
static BYTE uncompressed[1024];
ZSTD_inBuffer cin = {data, size, 0};
size_t cret;
do {
ZSTD_outBuffer cout = { compressed, sizeof(compressed), 0 };
ZSTD_inBuffer din = { compressed, 0, 0 };
ZSTD_outBuffer dout = { uncompressed, 0, 0 };
cret = ZSTD_compressStream2(cctx, &cout, &cin, endOp);
if (ZSTD_isError(cret))
return cret;
din.size = cout.pos;
while (din.pos < din.size || (endOp == ZSTD_e_end && cret == 0)) {
size_t dret;
dout.pos = 0;
dout.size = sizeof(uncompressed);
dret = ZSTD_decompressStream(dctx, &dout, &din);
if (ZSTD_isError(dret))
return dret;
XXH64_update(xxh, dout.dst, dout.pos);
if (dret == 0)
break;
}
} while (cin.pos < cin.size || (endOp != ZSTD_e_continue && cret != 0));
return 0;
}
/* Generates some data and round trips it */
static size_t SEQ_generateRoundTrip(ZSTD_CCtx* cctx, ZSTD_DCtx* dctx,
XXH64_state_t* xxh, SEQ_stream* seq,
SEQ_gen_type type, unsigned value)
{
static BYTE data[1024];
size_t gen;
do {
SEQ_outBuffer sout = {data, sizeof(data), 0};
size_t ret;
gen = SEQ_gen(seq, type, value, &sout);
ret = SEQ_roundTrip(cctx, dctx, xxh, sout.dst, sout.pos, ZSTD_e_continue);
if (ZSTD_isError(ret))
return ret;
} while (gen != 0);
return 0;
}
static size_t getCCtxParams(ZSTD_CCtx* zc, ZSTD_parameters* savedParams)
{
int value;
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_windowLog, (int*)&savedParams->cParams.windowLog));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_hashLog, (int*)&savedParams->cParams.hashLog));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_chainLog, (int*)&savedParams->cParams.chainLog));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_searchLog, (int*)&savedParams->cParams.searchLog));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_minMatch, (int*)&savedParams->cParams.minMatch));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_targetLength, (int*)&savedParams->cParams.targetLength));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_strategy, &value));
savedParams->cParams.strategy = value;
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_checksumFlag, &savedParams->fParams.checksumFlag));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_contentSizeFlag, &savedParams->fParams.contentSizeFlag));
CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_dictIDFlag, &value));
savedParams->fParams.noDictIDFlag = !value;
return 0;
}
static U32 badParameters(ZSTD_CCtx* zc, ZSTD_parameters const savedParams)
{
ZSTD_parameters params;
if (ZSTD_isError(getCCtxParams(zc, ¶ms))) return 10;
CHECK_RET(1, params.cParams.windowLog != savedParams.cParams.windowLog, "windowLog");
CHECK_RET(2, params.cParams.hashLog != savedParams.cParams.hashLog, "hashLog");
CHECK_RET(3, params.cParams.chainLog != savedParams.cParams.chainLog, "chainLog");
CHECK_RET(4, params.cParams.searchLog != savedParams.cParams.searchLog, "searchLog");
CHECK_RET(5, params.cParams.minMatch != savedParams.cParams.minMatch, "minMatch");
CHECK_RET(6, params.cParams.targetLength != savedParams.cParams.targetLength, "targetLength");
CHECK_RET(7, params.fParams.checksumFlag != savedParams.fParams.checksumFlag, "checksumFlag");
CHECK_RET(8, params.fParams.contentSizeFlag != savedParams.fParams.contentSizeFlag, "contentSizeFlag");
CHECK_RET(9, params.fParams.noDictIDFlag != savedParams.fParams.noDictIDFlag, "noDictIDFlag");
return 0;
}
static int basicUnitTests(U32 seed, double compressibility, int bigTests)
{
size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH;
void* CNBuffer = malloc(CNBufferSize);
size_t const skippableFrameSize = 200 KB;
size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH);
void* compressedBuffer = malloc(compressedBufferSize);
size_t const decodedBufferSize = CNBufferSize;
void* decodedBuffer = malloc(decodedBufferSize);
size_t cSize;
int testResult = 0;
int testNb = 1;
U32 coreSeed = 0; /* this name to conform with CHECK_Z macro display */
ZSTD_CStream* zc = ZSTD_createCStream();
ZSTD_DStream* zd = ZSTD_createDStream();
ZSTD_CCtx* mtctx = ZSTD_createCCtx();
ZSTD_inBuffer inBuff, inBuff2;
ZSTD_outBuffer outBuff;
buffer_t dictionary = kBuffNull;
size_t const dictSize = 128 KB;
unsigned dictID = 0;
/* Create compressible test buffer */
if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd || !mtctx) {
DISPLAY("Not enough memory, aborting \n");
goto _output_error;
}
RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed);
CHECK_Z(ZSTD_CCtx_setParameter(mtctx, ZSTD_c_nbWorkers, 2));
/* Create dictionary */
DISPLAYLEVEL(3, "creating dictionary for unit tests \n");
dictionary = FUZ_createDictionary(CNBuffer, CNBufferSize / 3, 16 KB, 48 KB);
if (!dictionary.start) {
DISPLAY("Error creating dictionary, aborting \n");
goto _output_error;
}
dictID = ZDICT_getDictID(dictionary.start, dictionary.filled);
/* Basic compression test */
DISPLAYLEVEL(3, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
CHECK_Z( ZSTD_initCStream(zc, 1 /* cLevel */) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
{ size_t const r = ZSTD_endStream(zc, &outBuff);
if (r != 0) goto _output_error; } /* error, or some data not flushed */
DISPLAYLEVEL(3, "OK (%u bytes)\n", (unsigned)outBuff.pos);
/* generate skippable frame */
MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START);
MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize);
cSize = skippableFrameSize + 8;
/* Basic compression test using dict */
DISPLAYLEVEL(3, "test%3i : skipframe + compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
CHECK_Z( ZSTD_CCtx_loadDictionary(zc, CNBuffer, dictSize) );
outBuff.dst = (char*)(compressedBuffer)+cSize;
assert(compressedBufferSize > cSize);
outBuff.size = compressedBufferSize - cSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
{ size_t const r = ZSTD_endStream(zc, &outBuff);
if (r != 0) goto _output_error; } /* error, or some data not flushed */
cSize += outBuff.pos;
DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n",
(unsigned)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
/* context size functions */
DISPLAYLEVEL(3, "test%3i : estimate CStream size : ", testNb++);
{ ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictSize);
size_t const cstreamSize = ZSTD_estimateCStreamSize_usingCParams(cParams);
size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy); /* uses ZSTD_initCStream_usingDict() */
if (ZSTD_isError(cstreamSize)) goto _output_error;
if (ZSTD_isError(cdictSize)) goto _output_error;
DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)(cstreamSize + cdictSize));
}
/* context size functions */
DISPLAYLEVEL(3, "test%3i : estimate CStream size using CCtxParams : ", testNb++);
{ ZSTD_CCtx_params* const params = ZSTD_createCCtxParams();
size_t cstreamSize, cctxSize;
CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_compressionLevel, 19) );
cstreamSize = ZSTD_estimateCStreamSize_usingCCtxParams(params);
CHECK_Z(cstreamSize);
cctxSize = ZSTD_estimateCCtxSize_usingCCtxParams(params);
CHECK_Z(cctxSize);
if (cstreamSize <= cctxSize + 2 * ZSTD_BLOCKSIZE_MAX) goto _output_error;
ZSTD_freeCCtxParams(params);
DISPLAYLEVEL(3, "OK \n");
}
DISPLAYLEVEL(3, "test%3i : check actual CStream size : ", testNb++);
{ size_t const s = ZSTD_sizeof_CStream(zc);
if (ZSTD_isError(s)) goto _output_error;
DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s);
}
/* Attempt bad compression parameters */
DISPLAYLEVEL(3, "test%3i : use bad compression parameters with ZSTD_initCStream_advanced : ", testNb++);
{ size_t r;
ZSTD_parameters params = ZSTD_getParams(1, 0, 0);
params.cParams.minMatch = 2;
r = ZSTD_initCStream_advanced(zc, NULL, 0, params, 0);
if (!ZSTD_isError(r)) goto _output_error;
DISPLAYLEVEL(3, "init error : %s \n", ZSTD_getErrorName(r));
}
/* skippable frame test */
DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++);
CHECK_Z( ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize) );
inBuff.src = compressedBuffer;
inBuff.size = cSize;
inBuff.pos = 0;
outBuff.dst = decodedBuffer;
outBuff.size = CNBufferSize;
outBuff.pos = 0;
{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
DISPLAYLEVEL(5, " ( ZSTD_decompressStream => %u ) ", (unsigned)r);
if (r != 0) goto _output_error;
}
if (outBuff.pos != 0) goto _output_error; /* skippable frame output len is 0 */
DISPLAYLEVEL(3, "OK \n");
/* Basic decompression test */
inBuff2 = inBuff;
DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
CHECK_Z( ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, ZSTD_WINDOWLOG_LIMIT_DEFAULT+1) ); /* large limit */
{ size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff);
if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
DISPLAYLEVEL(3, "OK \n");
/* Reuse without init */
DISPLAYLEVEL(3, "test%3i : decompress again without init (reuse previous settings): ", testNb++);
outBuff.pos = 0;
{ size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff2);
if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
DISPLAYLEVEL(3, "OK \n");
/* check regenerated data is byte exact */
DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
{ size_t i;
for (i=0; i<CNBufferSize; i++) {
if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;
} }
DISPLAYLEVEL(3, "OK \n");
/* check decompression fails early if first bytes are wrong */
DISPLAYLEVEL(3, "test%3i : early decompression error if first bytes are incorrect : ", testNb++);
{ const char buf[3] = { 0 }; /* too short, not enough to start decoding header */
ZSTD_inBuffer inb = { buf, sizeof(buf), 0 };
size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inb);
if (!ZSTD_isError(remaining)) goto _output_error; /* should have errored out immediately (note: this does not test the exact error code) */
}
DISPLAYLEVEL(3, "OK \n");
/* context size functions */
DISPLAYLEVEL(3, "test%3i : estimate DStream size : ", testNb++);
{ ZSTD_frameHeader fhi;
const void* cStart = (char*)compressedBuffer + (skippableFrameSize + 8);
size_t const gfhError = ZSTD_getFrameHeader(&fhi, cStart, cSize);
if (gfhError!=0) goto _output_error;
DISPLAYLEVEL(5, " (windowSize : %u) ", (unsigned)fhi.windowSize);
{ size_t const s = ZSTD_estimateDStreamSize(fhi.windowSize)
/* uses ZSTD_initDStream_usingDict() */
+ ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy);
if (ZSTD_isError(s)) goto _output_error;
DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s);
} }
DISPLAYLEVEL(3, "test%3i : check actual DStream size : ", testNb++);
{ size_t const s = ZSTD_sizeof_DStream(zd);
if (ZSTD_isError(s)) goto _output_error;
DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s);
}
/* Decompression by small increment */
DISPLAYLEVEL(3, "test%3i : decompress byte-by-byte : ", testNb++);
{ /* skippable frame */
size_t r = 1;
ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
inBuff.src = compressedBuffer;
outBuff.dst = decodedBuffer;
inBuff.pos = 0;
outBuff.pos = 0;
while (r) { /* skippable frame */
size_t const inSize = (FUZ_rand(&coreSeed) & 15) + 1;
size_t const outSize = (FUZ_rand(&coreSeed) & 15) + 1;
inBuff.size = inBuff.pos + inSize;
outBuff.size = outBuff.pos + outSize;
r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
if (ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream on skippable frame error : %s \n", ZSTD_getErrorName(r));
if (ZSTD_isError(r)) goto _output_error;
}
/* normal frame */
ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
r=1;
while (r) {
size_t const inSize = FUZ_rand(&coreSeed) & 15;
size_t const outSize = (FUZ_rand(&coreSeed) & 15) + (!inSize); /* avoid having both sizes at 0 => would trigger a no_forward_progress error */
inBuff.size = inBuff.pos + inSize;
outBuff.size = outBuff.pos + outSize;
r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
if (ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(r));
if (ZSTD_isError(r)) goto _output_error;
}
}
if (outBuff.pos != CNBufferSize) DISPLAYLEVEL(4, "outBuff.pos != CNBufferSize : should have regenerated same amount ! \n");
if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
if (inBuff.pos != cSize) DISPLAYLEVEL(4, "inBuff.pos != cSize : should have real all input ! \n");
if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */
DISPLAYLEVEL(3, "OK \n");
/* check regenerated data is byte exact */
DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
{ size_t i;
for (i=0; i<CNBufferSize; i++) {
if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;
} }
DISPLAYLEVEL(3, "OK \n");
/* Decompression forward progress */
DISPLAYLEVEL(3, "test%3i : generate error when ZSTD_decompressStream() doesn't progress : ", testNb++);
{ /* skippable frame */
size_t r = 0;
int decNb = 0;
int const maxDec = 100;
inBuff.src = compressedBuffer;
inBuff.size = cSize;
inBuff.pos = 0;
outBuff.dst = decodedBuffer;
outBuff.pos = 0;
outBuff.size = CNBufferSize-1; /* 1 byte missing */
for (decNb=0; decNb<maxDec; decNb++) {
if (r==0) ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
if (ZSTD_isError(r)) break;
}
if (!ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream should have triggered a no_forward_progress error \n");
if (!ZSTD_isError(r)) goto _output_error; /* should have triggered no_forward_progress error */
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : NULL output and NULL input : ", testNb++);
inBuff.src = NULL;
inBuff.size = 0;
inBuff.pos = 0;
outBuff.dst = NULL;
outBuff.size = 0;
outBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
CHECK(inBuff.pos != inBuff.size, "Entire input should be consumed");
CHECK_Z( ZSTD_endStream(zc, &outBuff) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
{ size_t const r = ZSTD_endStream(zc, &outBuff);
CHECK(r != 0, "Error or some data not flushed (ret=%zu)", r);
}
inBuff.src = outBuff.dst;
inBuff.size = outBuff.pos;
inBuff.pos = 0;
outBuff.dst = NULL;
outBuff.size = 0;
outBuff.pos = 0;
CHECK_Z( ZSTD_initDStream(zd) );
{ size_t const ret = ZSTD_decompressStream(zd, &outBuff, &inBuff);
if (ret != 0) goto _output_error;
}
DISPLAYLEVEL(3, "OK\n");
DISPLAYLEVEL(3, "test%3i : NULL output buffer with non-NULL input : ", testNb++);
{
const char* test = "aa";
inBuff.src = test;
inBuff.size = 2;
inBuff.pos = 0;
outBuff.dst = NULL;
outBuff.size = 0;
outBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
CHECK(inBuff.pos != inBuff.size, "Entire input should be consumed");
CHECK_Z( ZSTD_endStream(zc, &outBuff) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
{ size_t const r = ZSTD_endStream(zc, &outBuff);
CHECK(r != 0, "Error or some data not flushed (ret=%zu)", r);
}
inBuff.src = outBuff.dst;
inBuff.size = outBuff.pos;
inBuff.pos = 0;
outBuff.dst = NULL;
outBuff.size = 0;
outBuff.pos = 0;
CHECK_Z( ZSTD_initDStream(zd) );
CHECK_Z(ZSTD_decompressStream(zd, &outBuff, &inBuff));
}
DISPLAYLEVEL(3, "OK\n");
/* _srcSize compression test */
DISPLAYLEVEL(3, "test%3i : compress_srcSize %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, CNBufferSize) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
CHECK(inBuff.pos != inBuff.size, "Entire input should be consumed");
{ size_t const r = ZSTD_endStream(zc, &outBuff);
CHECK(r != 0, "Error or some data not flushed (ret=%zu)", r);
}
{ unsigned long long origSize = ZSTD_findDecompressedSize(outBuff.dst, outBuff.pos);
CHECK(origSize == ZSTD_CONTENTSIZE_UNKNOWN, "Unknown!");
CHECK((size_t)origSize != CNBufferSize, "Exact original size must be present (got %llu)", origSize);
}
DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
/* wrong _srcSize compression test */
DISPLAYLEVEL(3, "test%3i : too large srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1);
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, CNBufferSize+1) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
{ size_t const r = ZSTD_endStream(zc, &outBuff);
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */
DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); }
/* wrong _srcSize compression test */
DISPLAYLEVEL(3, "test%3i : too small srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1);
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, CNBufferSize-1) );
outBuff.dst = (char*)(compressedBuffer);
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */
DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r));
}
DISPLAYLEVEL(3, "test%3i : wrong srcSize !contentSizeFlag : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1);
{ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_contentSizeFlag, 0) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, CNBufferSize - MIN(CNBufferSize, 200 KB)) );
outBuff.dst = (char*)compressedBuffer;
outBuff.size = compressedBufferSize;
outBuff.pos = 0;
inBuff.src = CNBuffer;
inBuff.size = CNBufferSize;
inBuff.pos = 0;
{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */
DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r));
} }
/* Compression state reuse scenario */
DISPLAYLEVEL(3, "test%3i : context reuse : ", testNb++);
ZSTD_freeCStream(zc);
zc = ZSTD_createCStream();
if (zc==NULL) goto _output_error; /* memory allocation issue */
/* use 1 */
{ size_t const inSize = 513;
DISPLAYLEVEL(5, "use1 ");
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 19) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, inSize) );
inBuff.src = CNBuffer;
inBuff.size = inSize;
inBuff.pos = 0;
outBuff.dst = (char*)(compressedBuffer)+cSize;
outBuff.size = ZSTD_compressBound(inSize);
outBuff.pos = 0;
DISPLAYLEVEL(5, "compress1 ");
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
DISPLAYLEVEL(5, "end1 ");
if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; /* error, or some data not flushed */
}
/* use 2 */
{ size_t const inSize = 1025; /* will not continue, because tables auto-adjust and are therefore different size */
DISPLAYLEVEL(5, "use2 ");
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 19) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, inSize) );
inBuff.src = CNBuffer;
inBuff.size = inSize;
inBuff.pos = 0;
outBuff.dst = (char*)(compressedBuffer)+cSize;
outBuff.size = ZSTD_compressBound(inSize);
outBuff.pos = 0;
DISPLAYLEVEL(5, "compress2 ");
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
DISPLAYLEVEL(5, "end2 ");
if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; /* error, or some data not flushed */
}
DISPLAYLEVEL(3, "OK \n");
/* Decompression single pass with empty frame */
cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, NULL, 0, 1);
CHECK_Z(cSize);
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() single pass on empty frame : ", testNb++);
{ ZSTD_DCtx* dctx = ZSTD_createDCtx();
size_t const dctxSize = ZSTD_sizeof_DCtx(dctx);
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1));
outBuff.dst = decodedBuffer;
outBuff.pos = 0;
outBuff.size = CNBufferSize;
inBuff.src = compressedBuffer;
inBuff.size = cSize;
inBuff.pos = 0;
{ size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK_Z(r);
CHECK(r != 0, "Entire frame must be decompressed");
CHECK(outBuff.pos != 0, "Wrong size!");
CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!");
}
CHECK(dctxSize != ZSTD_sizeof_DCtx(dctx), "No buffers allocated");
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : maxBlockSize = 2KB : ", testNb++);
{
ZSTD_DCtx* dctx = ZSTD_createDCtx();
size_t singlePassSize, streamingSize, streaming2KSize;
{
ZSTD_CCtx* cctx = ZSTD_createCCtx();
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 2048));
cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize);
CHECK_Z(cSize);
ZSTD_freeCCtx(cctx);
}
CHECK_Z(ZSTD_decompressDCtx(dctx, decodedBuffer, CNBufferSize, compressedBuffer, cSize));
singlePassSize = ZSTD_sizeof_DCtx(dctx);
CHECK_Z(singlePassSize);
inBuff.src = compressedBuffer;
inBuff.size = cSize;
outBuff.dst = decodedBuffer;
outBuff.size = decodedBufferSize;
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_maxBlockSize, 2048));
inBuff.pos = 0;
outBuff.pos = 0;
{
size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK_Z(r);
CHECK(r != 0, "Entire frame must be decompressed");
}
streaming2KSize = ZSTD_sizeof_DCtx(dctx);
CHECK_Z(streaming2KSize);
CHECK_Z(ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters));
inBuff.pos = 0;
outBuff.pos = 0;
{
size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK_Z(r);
CHECK(r != 0, "Entire frame must be decompressed");
}
streamingSize = ZSTD_sizeof_DCtx(dctx);
CHECK_Z(streamingSize);
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_maxBlockSize, 1024));
inBuff.pos = 0;
outBuff.pos = 0;
CHECK(!ZSTD_isError(ZSTD_decompressStream(dctx, &outBuff, &inBuff)), "decompression must fail");
CHECK(streamingSize < singlePassSize + (1 << 18) + 3 * ZSTD_BLOCKSIZE_MAX, "Streaming doesn't use the right amount of memory");
CHECK(streamingSize != streaming2KSize + 3 * (ZSTD_BLOCKSIZE_MAX - 2048), "ZSTD_d_blockSizeMax didn't save the right amount of memory");
DISPLAYLEVEL(3, "| %zu | %zu | %zu | ", singlePassSize, streaming2KSize, streamingSize);
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
/* Decompression with ZSTD_d_stableOutBuffer */
cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize, 1);
CHECK_Z(cSize);
{ ZSTD_DCtx* dctx = ZSTD_createDCtx();
size_t const dctxSize0 = ZSTD_sizeof_DCtx(dctx);
size_t dctxSize1;
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1));
outBuff.dst = decodedBuffer;
outBuff.pos = 0;
outBuff.size = CNBufferSize;
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() single pass : ", testNb++);
inBuff.src = compressedBuffer;
inBuff.size = cSize;
inBuff.pos = 0;
{ size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK_Z(r);
CHECK(r != 0, "Entire frame must be decompressed");
CHECK(outBuff.pos != CNBufferSize, "Wrong size!");
CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!");
}
CHECK(dctxSize0 != ZSTD_sizeof_DCtx(dctx), "No buffers allocated");
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer : ", testNb++);
outBuff.pos = 0;
inBuff.pos = 0;
inBuff.size = 0;
while (inBuff.pos < cSize) {
inBuff.size += MIN(cSize - inBuff.pos, 1 + (FUZ_rand(&coreSeed) & 15));
CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff));
}
CHECK(outBuff.pos != CNBufferSize, "Wrong size!");
CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!");
dctxSize1 = ZSTD_sizeof_DCtx(dctx);
CHECK(!(dctxSize0 < dctxSize1), "Input buffer allocated");
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer too small : ", testNb++);
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only);
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1));
inBuff.src = compressedBuffer;
inBuff.size = cSize;
inBuff.pos = 0;
outBuff.pos = 0;
outBuff.size = CNBufferSize - 1;
{ size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK(ZSTD_getErrorCode(r) != ZSTD_error_dstSize_tooSmall, "Must error but got %s", ZSTD_getErrorName(r));
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer modified : ", testNb++);
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only);
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1));
inBuff.src = compressedBuffer;
inBuff.size = cSize - 1;
inBuff.pos = 0;
outBuff.pos = 0;
outBuff.size = CNBufferSize;
CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff));
++inBuff.size;
outBuff.pos = 0;
{ size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff);
CHECK(ZSTD_getErrorCode(r) != ZSTD_error_dstBuffer_wrong, "Must error but got %s", ZSTD_getErrorName(r));
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() buffered output : ", testNb++);
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only);
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 0));
outBuff.pos = 0;
inBuff.pos = 0;
inBuff.size = 0;
while (inBuff.pos < cSize) {
inBuff.size += MIN(cSize - inBuff.pos, 1 + (FUZ_rand(&coreSeed) & 15));
CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff));
}
CHECK(outBuff.pos != CNBufferSize, "Wrong size!");
CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!");
CHECK(!(dctxSize1 < ZSTD_sizeof_DCtx(dctx)), "Output buffer allocated");
DISPLAYLEVEL(3, "OK \n");
ZSTD_freeDCtx(dctx);
}
/* Compression with ZSTD_c_stable{In,Out}Buffer */
{ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
ZSTD_inBuffer in;
ZSTD_outBuffer out;
size_t cctxSize1;
size_t cctxSize2;
assert(cctx != NULL);
in.src = CNBuffer;
in.size = CNBufferSize;
out.dst = compressedBuffer;
out.size = compressedBufferSize;
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
DISPLAYLEVEL(3, "test%3i : ZSTD_compress2() uses stable input and output : ", testNb++);
CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize));
CHECK(!(cSize < ZSTD_compressBound(CNBufferSize)), "cSize too large for test");
CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, cSize + 4, CNBuffer, CNBufferSize));
CHECK_Z(cctxSize1 = ZSTD_sizeof_CCtx(cctx));
/* @cctxSize2 : sizeof_CCtx when doing full streaming (no stable in/out) */
{ ZSTD_CCtx* const cctx2 = ZSTD_createCCtx();
assert(cctx2 != NULL);
in.pos = out.pos = 0;
CHECK_Z(ZSTD_compressStream2(cctx2, &out, &in, ZSTD_e_continue));
CHECK(!(ZSTD_compressStream2(cctx2, &out, &in, ZSTD_e_end) == 0), "Not finished");
CHECK_Z(cctxSize2 = ZSTD_sizeof_CCtx(cctx2));
ZSTD_freeCCtx(cctx2);
}
/* @cctxSize1 : sizeof_CCtx when doing single-shot compression (no streaming) */
{ ZSTD_CCtx* const cctx1 = ZSTD_createCCtx();
ZSTD_parameters params = ZSTD_getParams(0, CNBufferSize, 0);
size_t cSize3;
assert(cctx1 != NULL);
params.fParams.checksumFlag = 1;
cSize3 = ZSTD_compress_advanced(cctx1, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize, NULL, 0, params);
CHECK_Z(cSize3);
CHECK(!(cSize == cSize3), "Must be same compressed size");
CHECK(!(cctxSize1 == ZSTD_sizeof_CCtx(cctx1)), "Must be same CCtx size");
ZSTD_freeCCtx(cctx1);
}
CHECK(!(cctxSize1 < cctxSize2), "Stable buffers means less allocated size");
CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compress2() doesn't modify user parameters : ", testNb++);
{ int stableInBuffer;
int stableOutBuffer;
CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableInBuffer, &stableInBuffer));
CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableOutBuffer, &stableOutBuffer));
CHECK(!(stableInBuffer == 0), "Modified");
CHECK(!(stableOutBuffer == 0), "Modified");
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableOutBuffer, 1));
CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize));
CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableInBuffer, &stableInBuffer));
CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableOutBuffer, &stableOutBuffer));
CHECK(!(stableInBuffer == 1), "Modified");
CHECK(!(stableOutBuffer == 1), "Modified");
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableInBuffer and ZSTD_c_stableOutBuffer : ", testNb++);
CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableOutBuffer, 1));
in.pos = out.pos = 0;
CHECK(!(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) == 0), "Not finished");
CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableInBuffer and ZSTD_c_stableOutBuffer allocated size : ", testNb++);
{ size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
CHECK(!(cctxSize1 == cctxSize), "Must be the same size as single pass");
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableInBuffer only : ", testNb++);
CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
in.pos = out.pos = 0;
out.size = cSize / 4;
for (;;) {
size_t const ret = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
CHECK_Z(ret);
if (ret == 0)
break;
out.size = MIN(out.size + cSize / 4, compressedBufferSize);
}
CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableInBuffer modify buffer : ", testNb++);
in.pos = out.pos = 0;
out.size = cSize / 4;
CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
in.src = (char const*)in.src + in.pos;
in.size -= in.pos;
in.pos = 0;
{ size_t const ret = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
CHECK(!ZSTD_isError(ret), "Must error");
CHECK(!(ZSTD_getErrorCode(ret) == ZSTD_error_stabilityCondition_notRespected), "Must be this error");
}
DISPLAYLEVEL(3, "OK \n");
/* stableSrc + streaming */
DISPLAYLEVEL(3, "test%3i : ZSTD_c_stableInBuffer compatibility with compressStream, flushStream and endStream : ", testNb++);
CHECK_Z( ZSTD_initCStream(cctx, 1) );
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1) );
{ ZSTD_inBuffer inBuf;
ZSTD_outBuffer outBuf;
const size_t nonZeroStartPos = 18;
const size_t inputSize = 500;
inBuf.src = CNBuffer;
inBuf.size = 100;
inBuf.pos = nonZeroStartPos;
outBuf.dst = (char*)(compressedBuffer)+cSize;
outBuf.size = ZSTD_compressBound(inputSize);
outBuf.pos = 0;
CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
inBuf.size = 200;
CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
CHECK_Z( ZSTD_flushStream(cctx, &outBuf) );
inBuf.size = nonZeroStartPos + inputSize;
CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
CHECK(ZSTD_endStream(cctx, &outBuf) != 0, "compression should be successful and fully flushed");
{ const void* const realSrcStart = (const char*)inBuf.src + nonZeroStartPos;
void* const verifBuf = (char*)outBuf.dst + outBuf.pos;
const size_t decSize = ZSTD_decompress(verifBuf, inputSize, outBuf.dst, outBuf.pos);
CHECK_Z(decSize);